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<strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>成</strong> <strong>员</strong> <strong>研</strong> <strong>讨</strong> <strong>会</strong>2012 年 11 月- 中 国 广 州© <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>欢</strong> <strong>迎</strong> <strong>辞</strong> !• 感 谢 大 家 今 天 的 光 临 , 我 们 深 感 荣 幸 。• <strong>成</strong> <strong>员</strong> <strong>讨</strong> 论 <strong>会</strong> 是 一 个 很 好 的 契 机 , 让 大 家 可 以 了 解 有 关 我 们 组 织 的 最 新 情 况 ,并 了 解 各 自 可 采 用 的 参 与 方 式 。• 另 外 , 这 也 是 一 个 供 大 家 提 出 问 题 、 提 供 反 馈 的 好 机 <strong>会</strong> !• 今 天 的 材 料 可 在 以 下 网 址 获 得 : http://bit.ly/WBK5sR.• 感 谢 我 们 今 天 <strong>会</strong> 议 的 协 助 单 位 : 深 圳 电 信 <strong>研</strong> 究 院<strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> 保 密 资 料Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium2


今 日 议 程时 间主 题9:30 – 10:15 主 旨 演 讲 : <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> ® —— 无 缝 连 接10:15 – 10:30 协 助 单 位 – 深 圳 电 信 <strong>研</strong> 究 院 发 言10:30 – 11:00 <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> 计 划 路 线 图11:00 – 11:45 计 划 状 态 更 新11:45 – 12:45 午 餐12:45 – 13:30 计 划 聚 焦 :<strong>Wi</strong>-<strong>Fi</strong> CERTIFIED TDLS13:30 – 15:00 计 划 聚 焦 :<strong>Wi</strong>-<strong>Fi</strong> CERTIFIED Miracast15:00 – 15:15 茶 歇15:15 – 16:00 计 划 聚 焦 :VHT 5G16:00 – 17:00 问 答 与 结 语Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium3今 日 议 程时 间主 题9:30 – 10:15 主 旨 演 讲 : <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> ® —— 无 缝 连 接10:15 – 10:30 赞 助 实 验 室 发 言10:30 – 11:00 <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> 计 划 路 线 图11:00 – 11:45 计 划 状 态 更 新11:45 – 12:45 午 餐12:45 – 13:30 计 划 聚 焦 :<strong>Wi</strong>-<strong>Fi</strong> CERTIFIED TDLS13:30 – 15:00 计 划 聚 焦 :<strong>Wi</strong>-<strong>Fi</strong> CERTIFIED Miracast15:00 – 15:15 茶 歇15:15 – 16:00 计 划 聚 焦 :VHT 5G16:00 – 17:00 问 答 与 结 语Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium4


<strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong>®: 无 缝 连 接<strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> 保 密 资 料Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium5<strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> 的 愿 景无 缝 连 接<strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> 保 密 资 料Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium6


<strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> 简 介• 是 由 500 多 家 <strong>成</strong> <strong>员</strong> 组 <strong>成</strong> 的 模 范 合 作 论坛 , 旨 在 共 同 促 进 <strong>Wi</strong>-<strong>Fi</strong> ® 的 普 及 采 用 。• <strong>Wi</strong>-<strong>Fi</strong> CERTIFIED 是 世 界 级 的 可互 操 作 性 验 证 计 划 , 旨 在 促 进 新 技术 的 加 速 普 及 , 并 提 供 最 佳 用 户 体验 。• 迄 今 为 止 认 证 的 产 品 数 量 已 超 过15000 种 。• 今 年 将 推 出 超 过 15 项 独 特 倡 议 。查 看 <strong>会</strong> <strong>员</strong> 企 业 的 完 整 清 单 , 敬 请 登 录 www.wi-fi.orgConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium7<strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> 的 <strong>成</strong> <strong>员</strong> 结 构 涵 盖 多 种 行 业根 据 地 区 划 分 的 <strong>成</strong> <strong>员</strong> 结 构 图根 据 行 业 划 分 的 <strong>成</strong> <strong>员</strong> 结 构 图亚 太 欧 洲 、 中 东 与 非 洲 北 美 南 美消 费 端 产 品原 始 设 计 制 造 商服 务 提 供 商测 试 设 备 实 验 室网 络 端 产 品半 导 体软 件其 他Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium8


本 地 <strong>成</strong> <strong>员</strong> 企 业 继 续 致 力 于 推 广 <strong>Wi</strong>-<strong>Fi</strong>TCT Mobile LimitedConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium9<strong>Wi</strong>-<strong>Fi</strong> 的 发 展 势 头 强 劲 ;我 们 的 未 来 充 满 契 机• 如 今 世 界 上 有 17% 的 人 口 使 用 <strong>Wi</strong>-<strong>Fi</strong>*。• 2011 年 ,<strong>Wi</strong>-<strong>Fi</strong> 设 备 出 货 量 超 过 10 亿 *。• 自 2001 年 以 来 , 设 备 销 售 额 实 现 两位 数 的 同 比 增 长 率 。• 连 接 了 <strong>Wi</strong>-<strong>Fi</strong> 的 产 品 和 应 用 呈 爆 炸 式增 长 趋 势 。通 过 技 术 和 各 种 应 用 , 实 现 无 缝 连 接 的 未 来 。<strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> 保 密 资 料Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong>* 资 料 来 源 : 市 场 <strong>研</strong> 究 公 司ABI Research<strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium10


随 着 行 业 的 发 展 , 产 品 认 证 也 不 断 繁 荣 发 展<strong>Wi</strong>-<strong>Fi</strong> 芯 片 组 出 货 量 vs 产 品 认 证 数 量资 料 来 源 :ABI Research 公 司 ,<strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong>芯片组出货量(百万套)2010-2011 年期 间 , 48%的 增 长 率产品认证数量<strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> 保 密 资 料<strong>Wi</strong>-<strong>Fi</strong> IC 出 货 量<strong>Wi</strong>-<strong>Fi</strong> 认 证 数 量Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 11消 费 电 子 产 品 和 移 动 设 备 产 生 了 超 过 50% 的 认 证 活 动<strong>Wi</strong>-<strong>Fi</strong> 认 证 数 量 的 分 类资 料 来 源 :<strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong>个 人 电 脑 与 计 算 设 备电 话其 他网 络 设 备 ( 全 部 )消 费 电 子 产 品 ( 全 部 )<strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> 保 密 资 料Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium12


线 缆 为 <strong>Wi</strong>-<strong>Fi</strong> 让 路 : <strong>成</strong> 为 数 字 家 庭 的 默 认 连 接 选 项2011 年 CE 认 证 与 非 CE 认 证 的 对 比 情 况数 据 来 源 :<strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong>音 频 ,65电 视机 ,465机 顶 盒 ,139其 他 CE 认证• 2011 年 至 2016 年 期 间 , 联 网家 庭 类 别 的 <strong>Wi</strong>-<strong>Fi</strong> 销 售 额 预 计将 增 长 35%( 年 均 复 合 增 长 率 )*。– 电 视 、 媒 体 播 放 器 和 游 戏 机• <strong>Wi</strong>-<strong>Fi</strong> 认 证 数 量 反 映 了 数 字 家庭 的 发 展 趋 势 。• 即 将 出 现 的 技 术 将 加 速 向“ 全 <strong>Wi</strong>-<strong>Fi</strong> 式 ” 数 字 家 庭 的 过 渡 。非 CE 认 证<strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> 保 密 资 料* ABI Research 公 司Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 13<strong>Wi</strong>-<strong>Fi</strong> 改 变 了 人 们 对 网 络 连 接 的 预 期• <strong>Wi</strong>-<strong>Fi</strong> 是 多 种 设 备 类 型 的 默 认 连 接 模 式 。• 设 备 可 以 随 时 随 地 进 行 连 接 。– 设 备 之 间 互 连 , 进 行 共 享 、 同 步 、 打 印 、 以 及 娱 乐 。– 可 在 全 球 超 过 100 万 个 热 点 连 接 互 联 网 ( 这 一 数 字 还 在 增 长 )。• 互 连 体 验 比 以 往 任 何 时 候 都 更 丰 富 : 让 新 的 创 新 <strong>成</strong> 为 现 实 , 比 如 云 服 务 。– 目 前 云 应 用 在 移 动 数 据 流 量 中 占 45%( 到 2016 年 这 一 比 例 将 达 到 71%)*。– “[2012 年 ,] 80% 的 新 商 业 企 业 级 应 用 将 被 部 署 在 在 云 平 台 上 ” (IDC)。– 越 来 越 多 的 内 容 “ 在 设 备 外 ” 进 行 处 理 和 存 储 , 克 服 了 设 备 的 局 限 性 。• 转 变 了 用 户 期 望 , 这 进 一 步 刺 激 了 市 场 对 连 接 的 强 烈 需 求 。* 资 料 来 源 : 思 科 VNI Mobile,2012 年 http://www.cisco.com/en/US/solutions/collateral/ns341/ns525/ns537/ns705/ns827/white_paper_c11-520862.html<strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> 保 密 资 料Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium14


良 性 的 创 新 与 采 用 周 期 :<strong>Wi</strong>-<strong>Fi</strong> 推 动 了 市 场 进 步连 接 速 度 越 来越 快 , 越 来 越易 用大 众 市 场 需 求促 进 了 更 多 的创 新 。连 接 推 动 了 引 人 注目 的 新 应 用 的 发 展 。用 户 期 望 不 断发 展 。用 户 连 接 的 频 率越 来 越 高 , 消 费的 数 据 越 来 越 多 。<strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> 保 密 资 料Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 15云 视 频 服 务 将 产 生 超 过 70% 的 移 动 数 据 流 量艾字节/ 每月移 动 VoIP移 动 游 戏移 动 文 件 共 享移 动 M2M移 动 网 络 / 数 据移 动 视 频<strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> 保 密 资 料Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium16


<strong>Wi</strong>-<strong>Fi</strong> 的 下 一 次 浪 潮 即 将 到 来• 如 今 我 们 正 处 在 <strong>Wi</strong>-<strong>Fi</strong> 设 备 数 量 与 多 样 性 呈 爆 炸 式 增 长 的 风 口 浪 尖 上 。• 新 的 应 用 要 求 实 现 性 能 的 大 幅 提 高 。– 核 心 改 进 将 按 照 量 级 提 升 速 度 。– 电 源 管 理 将 进 一 步 提 高 电 池 供 电 设 备 的 耐 久 性 。• <strong>Wi</strong>-<strong>Fi</strong> 提 供 的 不 仅 仅 是 基 本 数 据 连 接 。– 服 务 的 可 互 操 作 性 将 使 <strong>Wi</strong>-<strong>Fi</strong> <strong>成</strong> 为 用 户 体 验 不 可 或 缺 的 一 部 分 。– 随 着 设 备 能 够 以 更 加 智 能 化 的 方 式 发 现 对 方 并 进 行 互 连 ,<strong>Wi</strong>-<strong>Fi</strong> 对 用 户 来 说 <strong>会</strong> 越 来 越 透 明 。<strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> 保 密 资 料Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 17<strong>Wi</strong>-<strong>Fi</strong> 认 证 产 品 组 合 不 断 扩 展 , 以 满 足 市 场 对 大 量 振 奋人 心 的 应 用 的 性 能 期 望3,000按 频 带 类 型 统 计 的 <strong>Wi</strong>-<strong>Fi</strong> 芯 片 组 出 货 量数 据 来 源 :ABI Research 公 司2,5002,000三 频60 GHz 11n, 11ac, 和11ad1,500双 频 11n + 11ac1,000双 频 11n500单 频 11n02010 2011 2012 2013 2014 2015 2016 2017Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium18


<strong>Wi</strong>-<strong>Fi</strong> 将 促 进 更 加 一 致 的 用 户 体 验• 显 示 设 备 无 需 电 缆 即 可 提 供 丰 富 的 音频 / 视 频 体 验 。• 移 动 设 备 将 无 缝 连 接 到 热 点 。• 外 围 设 备 , 比 如 显 示 器 和 键盘 , 可 直 接 与 笔 记 本 电 脑 对接 , 实 现 无 线 桌 面 。• 设 备 将 与 程 序 通 信 以 及 设 备之 间 相 互 通 信 , 以 应 对 不 断变 化 的 能 源 需 求 。Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 19对 <strong>Wi</strong>-<strong>Fi</strong> 的 期 望 非 常 高“…… 很 难 打 败 <strong>Wi</strong>-<strong>Fi</strong>。 得 益 于 预 期 将 要 更 新 的 标 准 ,每 当 涉 及 到 覆 盖 范 围 和 用 户 体 验 问 题 , 人 们 很 难 不选 择 <strong>Wi</strong>-<strong>Fi</strong>。”——Stacey Higginbotham,GigaOm( 科 技 博 客 网 站 )<strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> 保 密 资 料Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium20


齐 心 协 力 进 行 合 作 , 我 们 将 促 进 新 一 代 的互 连 设 备 、 应 用 与 用 户 的 出 现 。<strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> 保 密 资 料Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 21今 日 议 程时 间主 题9:30 – 10:15 主 旨 演 讲 : <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> ® —— 无 缝 连 接10:15 – 10:30 协 助 单 位 – 深 圳 电 信 <strong>研</strong> 究 院 发 言10:30 – 11:00 <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> 计 划 路 线 图11:00 – 11:45 计 划 状 态 更 新11:45 – 12:45 午 餐12:45 – 13:30 计 划 聚 焦 :<strong>Wi</strong>-<strong>Fi</strong> CERTIFIED TDLS13:30 – 15:00 计 划 聚 焦 :<strong>Wi</strong>-<strong>Fi</strong> CERTIFIED Miracast15:00 – 15:15 茶 歇15:15 – 16:00 计 划 聚 焦 :VHT 5G16:00 – 17:00 问 答 与 结 语Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium22


今 日 议 程时 间主 题9:30 – 10:15 主 旨 演 讲 : <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> ® —— 无 缝 连 接10:15 – 10:30 协 助 单 位 – 深 圳 电 信 <strong>研</strong> 究 院 发 言10:30 – 11:00 <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> 计 划 路 线 图11:00 – 11:45 计 划 状 态 更 新11:45 – 12:45 午 餐12:45 – 13:30 计 划 聚 焦 :<strong>Wi</strong>-<strong>Fi</strong> CERTIFIED TDLS13:30 – 15:00 计 划 聚 焦 :<strong>Wi</strong>-<strong>Fi</strong> CERTIFIED Miracast15:00 – 15:15 茶 歇15:15 – 16:00 计 划 聚 焦 :VHT 5G16:00 – 17:00 问 答 与 结 语Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 23<strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> 计 划 路 线 图Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium24


<strong>Wi</strong>-<strong>Fi</strong> CERTIFIED Passpoint 简 化 了 热 点 的 网 络 连 接• 热 点 的 使 用 率 继 续 呈 爆 炸 式 增 长 趋 势 :– 到 2015 年 , 公 共 热 点 数 量 将 达 到 近 60 亿 个 *。– 到 2015 年 , 热 点 的 使 用 将 达 到 1200 亿 次 连 接**。• 全 球 服 务 提 供 商 如 今 越 来 越 多 地 依 靠 <strong>Wi</strong>-<strong>Fi</strong>进 行 数 据 卸 载 。– 到 2014 年 , 全 球 每 年 的 移 动 数 据 流 量 预 计 将是 如 今 规 模 的 4 倍 , 达 到 16 太 字 节 以 上 *。• <strong>Wi</strong>-<strong>Fi</strong> CERTIFIED Passpoint 设 备 将 提 供连 贯 的 自 动 连 接 过 程 和 WPA2 安 全 性 , 并支 持 供 应 商 间 漫 游 协 议 。* 资 料 来 源 : 无 线 宽 带 联 盟 和 分 析 机 构 Informa,2011 年** 资 料 来 源 :In-Stat 公 司 , 2011 年<strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> 保 密 资 料Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong>新 计 划!<strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 30Protected Management Frames( 管 理 帧 保 护 )将 WPA2 强 大 的 安 全 保 护 扩 展 到 管 理 帧 , 这 将 确 保 <strong>Wi</strong>-<strong>Fi</strong> CERTIFIED 设 备 能 够 继 续 提供 最 高 级 别 的 保 护 与 可 用 性 。• 为 组 播 管 理 响 应 帧 提 供 WPA2 级 别 的 防 伪 造 保 护 , 为 单 播 管 理 响 应 帧 提 供 WPA2 级别 的 防 窃 听 与 伪 造 保 护 。• 新 的 WFA 认 证 计 划 , 比 如 Voice-Enterprise( 企 业 级 语 音 ) 和 <strong>Wi</strong>reless NetworkManagement( 无 线 网 络 管 理 ), 使 用 新 的 协 议 特 性 来 实 现 在 企 业 和 大 型 <strong>Wi</strong>-<strong>Fi</strong> 环 境以 及 潜 在 家 庭 环 境 中 的 更 佳 操 作 。• 新 的 协 议 特 性 使 用 Action( 响 应 ) 管 理 帧 来 传 输 敏 感 信 息 , 预 计 将 被 广 泛 部 署 在 企业 和 消 费 电 子 设 备 上 。• 在 不 具 备 安 全 保 护 的 情 况 下 传 输 这 些 响 应 帧 , <strong>会</strong> 导 致 <strong>Wi</strong>-<strong>Fi</strong> 网 络 容 易 受 到 攻 击 , 从 而可 能 <strong>会</strong> 限 制 网 络 可 用 性 。Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong>新 计 划!<strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium31


Voice-Enterprise( 企 业 级 语 音 ): 企 业 级 的 语 音 品 质 、流 动 性 、 节 能 性 与 安 全 性• 优 先 处 理 通 过 数 据 包 传 输 的 语 音 应 用 程 序 ,在 大 量 数 据 、 语 音 和 视 频 流 量 并 存 的 混 合流 量 环 境 中 优 化 性 能 。• 用 户 通 过 从 一 个 接 入 点 连 接 另 一 个 接 入 点进 入 企 业 网 络 时 , 可 以 体 验 到 顺 畅 无 缝 的语 音 连 接 。• 电 池 供 电 设 备 的 电 源 节 能 解 决 方 案 进 行 了优 化 , 在 整 个 系 统 上 执 行 能 够 最 大 限 度 提高 电 源 效 率 的 机 制 。• WPA2 高 级 安 全 保 护 有 助 于 确 保 通 信 完 整性 。新 计 划!Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 32WMM®-Admission Control( 准 入 控 制 ): 带 宽 管 理 控制 工 具• 该 计 划 是 QoS( 服 务 质 量 ) 解 决 方 案WMM® 套 件 的 一 个 组 <strong>成</strong> 部 分 : 支 持 <strong>Wi</strong>-<strong>Fi</strong> 网络 根 据 流 量 类 型 —— 语 音 、 数 据 、 最 大 努力 优 先 级 —— 来 管 理 流 量 。• 通 过 监 测 网 络 负 载 和 信 道 条 件 来 管 理 带 宽 。• 只 接 受 网 络 可 以 良 好 质 量 水 平 为 之 提 供 支持 的 数 据 流 。• 将 网 络 不 能 够 以 良 好 质 量 水 平 为 之 提 供 支持 的 数 据 流 引 导 至 备 用 接 入 点 或 信 道 。新 计 划!Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium33


节 电 技 术 将 进 一 步 提 高 电 池 供 电 设 备 的 耐 久 性• 通 过 增 加 新 的 基 于 IEEE 802.11v 标 准 的 节 电 功 能 , 扩 展 节 电 设 备 认 证 扩 大 了 <strong>Wi</strong>-<strong>Fi</strong><strong>Alliance</strong> 目 前 的 节 电 功 能 认 证 组 合 的 范 围 。• 新 市 场 和 现 有 市 场 将 有 益 于 :– 企 业 网 络 : 支 持 手 机 和 掌 上 平 板 设 备 的 爆 炸式 增 长 。– 消 费 区 和 住 宅 区 网 络 : 在 这 些 区 域 ,<strong>Wi</strong>-<strong>Fi</strong> 是人 们 进 行 消 费 电 子 产 品 连 接 和 宽 带 互 联 网 接 入的 无 可 争 议 的 首 选 技 术 。– 智 能 电 网 和 传 感 器 网 络 : 在 这 些 区 域 ,<strong>Wi</strong>-<strong>Fi</strong>可 支 持 新 的 应 用 , 同 时 重 新 使 用 现 有 的 基 础 设施 , 并 将 所 需 的 新 设 备 数 量 减 至 最 低 。• 计 划 于 2013 年 年 中 推 出 该 认 证 计 划 。<strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> 保 密 资 料Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 34<strong>Wi</strong>-<strong>Fi</strong>: 世 界 上 领 先 的 网 络 技 术 延 伸 到 智 能 能 源 领 域• SEP 2 互 操 作 性 认 证 联 盟 (Consortium for SEP 2 Interoperability) —— 预 计 在 2013 年 年 底 通 过 <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> 进 行 测 试 与 认 证 。• <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> 目 前 在 很 多 的 重 点 行 业 活 动 上 都 进 行 多 技 术 互 操 作 性 演 示 。• 覆 盖 整 个 家 庭 , 可 扩 展 至 户 外 。• “ 设 备 到 设 备 ” 以 及 传 统 的 网 络连 接 模 式 ; 均 可 进 行 交 互 操 作 。• 使 用 一 种 单 一 技 术 , 连 接 全 部家 用 电 器 、 消 费 电 子 产 品 、汽 车 、 以 及 智 能 能 源 设 备 。<strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> 保 密 资 料Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium35


VHT in 5 GHz (802.11ac) 是 新 一 代 <strong>Wi</strong>-<strong>Fi</strong> CERTIFIED技 术• 最 多 可 传 输 三 条 经 过 轻 微 压 缩 的 高 清 视 频 流 , 迅 速 同 步 大 型 文 件 , 并 以 千 兆 位 数据 速 率 连 接 所 需 要 的 应 用 程 序 。• 5 GHz 高 吞 吐 量 技 术 建 立 在 <strong>Wi</strong>-<strong>Fi</strong> CERTIFIED n 的 基 础 上 , 可 与 传 统 的 5 GHz 设 备进 行 互 操 作 。• 双 频 (2.4 和 5 GHz) 网 络 产 品 预 计 在 早 期 市 场 上 将 非 常 普 遍 。• 空 中 传 输 将 使 用 最 新 一 代安 全 技 术 WPA2 进 行 加 密 。• 计 划 将 于 2013 年 年 初 推 出 该 认 证 项 目 。<strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> 保 密 资 料Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 3660 GHz 技 术 是 一 个 振 奋 人 心 的 <strong>Wi</strong>-<strong>Fi</strong> 网 络 技 术 “ 同 伴 ”• 60 GHz 设 备 认 证 也 预 期 2014 年 推 出 — 技 术 将 提 供 多 千 兆 位 的 数 据 传 输 速 率 和 低 延迟 , 以 支 持 广 泛 的 应 用 范 围 。– 传 输 未 经 压 缩 的 高 清 视 频 。– 在 没 有 明 显 延 迟 的 条 件 下 享 受 视 频 游 戏 。– 无 需 电 缆 , 接 驳 各 种 设 备 。• 多 频 设 备 将 无 缝 地 从 60 GHz 向 <strong>Wi</strong>-<strong>Fi</strong> 转 移 数 据 流 ,提 供 遍 布 整 个 家 庭 的 高 性 能 网 络 连 接 , 受 到有 着 甚 至 更 高 数 据 传 输 速 率 的 60 GHz 连 接 的岛 的 推 动 。• 空 中 传 输 将 使 用 最 新 一 代 的 安 全 技 术 WPA2进 行 加 密 。<strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> 保 密 资 料Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium37


其 他 即 将 推 出 的 <strong>Wi</strong>-<strong>Fi</strong> CERTIFIED 即 将 推 出 的 项 目 计 划 及 更 新Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 38WFA 任 务 组 保 持 创 新 速 度市 场 营 销 任 务 组技 术 任 务 组IBSS with <strong>Wi</strong>-<strong>Fi</strong> Protected SetupIBSS with <strong>Wi</strong>-<strong>Fi</strong> Protected SetupSecurity( 安 全 性 ) Security( 安 全 性 )<strong>Wi</strong>reless Network Management (WNM, 无 线 网 络 管 理 )WNM Network Power SaveDisplay( 显 示 ) Display( 显 示 )Smart GridSmart GridHotspot 2.0 Hotspot 2.0VHT 5GHzVHT 5GHz60 GHz 60 GHz<strong>Wi</strong>-<strong>Fi</strong> Direct Services<strong>Wi</strong>-<strong>Fi</strong> Direct ServicesService Discovery( 服 务 发 现 ) <strong>Wi</strong>-<strong>Fi</strong> Protected Setup ( 近 场 通 信 )<strong>Wi</strong>-<strong>Fi</strong> DockingSerial BusNetwork Neighborhood Awareness( 网 络 邻 居 意 识 )特 殊 任 务 组Sensor Net Long Range Planning( 长 期 规 划 )TV White Spaces( 空 白 电 视 信 号 频 段 ) RF Health and Science(RF 健 康 与 科 学 )细 分 市 场 任 务 组 Spectrum and Regulatory( 频 谱 与 监 管 事 宜 )Enterprise( 企 业 ) Certification Oversight Group( 认 证 监 督 小 组 )Operator( 操 作 <strong>员</strong> ) Certification Maintenance Group( 认 证 维 护 小 组 )Healthcare( 医 疗 保 健 )Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium39


本 地 授 权 测 试 实 验 室Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 40行 业 联 络 为 合 作 提 供 专 门 化 解 决 方 案 提 供 了 支 持Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium41


目 前 形 势 进 展 良 好 , 但 我 们仍 任 重 而 道 远 !• 如 今 许 多 新 的 细 分 市 场 已 经 变 得 对 <strong>Wi</strong>-<strong>Fi</strong> 行 业 具 有 重 要 意 义 :– 智 能 能 源– 机 对 机 (IOT)– 个 人 保 健 和 体 质 监 测– 车 辆 的 <strong>Wi</strong>-<strong>Fi</strong> 无 线 网 络 连 接– 面 向 先 进 数 字 家 庭 的 甚 高 性 能 <strong>Wi</strong>-<strong>Fi</strong> 技 术• 这 些 市 场 是 <strong>Wi</strong>-<strong>Fi</strong> 技 术 的 理 想 市 场 , 但 <strong>会</strong> 要 求 我 们 合 力 进 行 创 新 。– 改 善 受 限 设 备 的 电 源 管 理 功 能 。– 维 护 失 效 安 全 保 障 。– 让 <strong>Wi</strong>-<strong>Fi</strong> 技 术 比 以 往 任 何 时 候 都 更 容 易 操 作 。<strong>成</strong> <strong>员</strong> 企 业 的 贡 献 与 知 识 将 在 创 建 <strong>Wi</strong>-<strong>Fi</strong> 未 来 的 进 程 中 发 挥 关 键 作 用 —— 请 您 积 极 参与 !Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 42即 将 举 办 的 <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> <strong>会</strong> 议 —— 敬 请 加 入 我 们 !• 2013 年 亚 洲 地 区 <strong>会</strong> 议中 国 上 海 ,2013 年 3 月 5 日 -7 日• 2013 年 北 美 地 区 <strong>会</strong> 议美 国 西 雅 图 ,2013 年 6 月 25 日 –27 日• 2013 年 欧 洲 地 区 <strong>会</strong> 议比 利 时 布 鲁 塞 尔 ,2013 年 10 月 22 日 –24 日<strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> <strong>成</strong> <strong>员</strong> <strong>会</strong> 议 仅 限 <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> <strong>成</strong> <strong>员</strong>和 受 邀 嘉 宾 参 加 。请 发 送 电 子 邮 件 至info@wi-fi.org 索 取 邀 请 表Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium43


今 日 议 程时 间主 题9:30 – 10:15 主 旨 演 讲 : <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> ® —— 无 缝 连 接10:15 – 10:30 协 助 单 位 – 深 圳 电 信 <strong>研</strong> 究 院 发 言10:30 – 11:00 <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> 计 划 路 线 图11:00 – 11:45 计 划 状 态 更 新11:45 – 12:45 午 餐12:45 – 13:30 计 划 聚 焦 :<strong>Wi</strong>-<strong>Fi</strong> CERTIFIED TDLS13:30 – 15:00 计 划 聚 焦 :<strong>Wi</strong>-<strong>Fi</strong> CERTIFIED Miracast15:00 – 15:15 茶 歇15:15 – 16:00 计 划 聚 焦 :VHT 5G16:00 – 17:00 问 答 与 结 语Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 44计 划 状 态 更 新新 应 用 程 序 的 性 能 与 可 用 性 得 以 增 强Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium45


如 今 <strong>Wi</strong>-<strong>Fi</strong> 采 用 率 的 普 及 已 经 覆 盖 许 多 设 备 类 别 ;2011 年 全 球 家 庭 网 络 数 量 超 过 4 亿 个CE 设 备 <strong>Wi</strong>-<strong>Fi</strong> 配 售 率( 市 场 <strong>研</strong> 究 公 司 Strategy Analytics,2012 年 )<strong>Wi</strong>-<strong>Fi</strong> 家 庭 网 络 渗 透 率( 市 场 <strong>研</strong> 究 公 司 Strategy Analytics,2012 年 4 月 )笔 记 本 + 上 网 本智 能 手 机 + 平 板 电 脑游 戏 机 + 便 携 式 游 戏 设 备数 字 媒 体 适 配 器电 子 书 阅 读 器蓝 光 机 顶 盒便 携 式 媒 体 播 放 器平 板 电 视 机Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong>到 2016 年 全 球 家 庭 网 络数 量 将 超 过 8 亿 个韩 国英 国德 国法 国日 本加 拿 大意 大 利美 国西 班 牙澳 大 利 亚<strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 46高 端 设 备 显 著 增 加 了 数 据 流 量智 能 手 机手 持 游 戏 设 备平 板 电 脑笔 记 本 电 脑* 每 月 的 基 本 手 机 数 据 流 量资 料 来 源 : 思 科 Cisco VNI Mobile,2012 年 http://www.cisco.com/en/US/solutions/collateral/ns341/ns525/ns537/ns705/ns827/white_paper_c11-520862.html<strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> 保 密 资 料Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium47


用 户 访 问 内 容 的 方 式 、 时 间 与 地 点 发 生 根 本 性 转 变• 如 今 设 备 更 易 于 携 带 , 并 采 用 屏 幕 区 域 最 大 化 的 外 观 设 计 。• 越 来 越 多 的 用 户 内 容 与 数 据 采 用 设 备 外 存 储 方 式 , 以 克 服 存 储 容 量 限 制 , 并 提 供访 问 便 利 。• 家 庭 网 络 , 具 体 而 言 即 <strong>Wi</strong>-<strong>Fi</strong>, 被 用 于 进 行 家 用 视 频 分 配 。• 基 于 互 联 网 电 视 (Over-the-top) 的 视 频 服 务 可 提 供 更 优 质 的 内 容 。• 新 的 外 观 设 计 需 要 实 现 以 更 少 端 口 提 供 更 多 功 能 。• “ 如 今 流 媒 体 的 保 真 度 不 断 攀 升 , 与 设 备 功 能 保 持 同 步 , 所 以 即 使 用 户 观 看 内 容 的总 时 长 保 持 不 变 ( 其 实 一 定 <strong>会</strong> 变 ), 字 节 消 费 量 也 将 <strong>会</strong> 显 著 增 加 。” ——Sandvine 公 司Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 48随 着 全 球 数 据 流 量 呈 爆 炸 式 增 长 ……每 月 艾 字 节 量IP 语 音 (VoIP)在 线 游 戏网 络 、 电 子 邮 件 和 数 据网 络 视 频文 件 共 享数 据 来 源 ::2012 年 思 科 VNIConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium49


……<strong>Wi</strong>- <strong>Fi</strong> 将 做 好 准 备 , 以 满 足 用 户 需 求• 易 于 使 用• 千 兆 位 性 能• 大 量 新 用 途• 容 量 显 著 增 大Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 50VHT 5G为 当 今 数 据 密 集 型 应 用 开 发 的 速 度 更 快 的 <strong>Wi</strong>-<strong>Fi</strong>Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium51


VHT 5GHz 提 高 了 数 据 密 集 型 应 用 的 <strong>Wi</strong>-<strong>Fi</strong> 性 能• 如 今 丰 富 的 数 字 媒 体 与 内 容 无 处 不 在 , 但 数 据 却 并 非 总 是 在 恰 当 的 时 间 被 存 储 在恰 当 的 设 备 上 。• 流 媒 体 播 放 与 数 据 共 享 应 用 对 于 从 其 他 设 备 进 行 内 容 访 问 越 来 越 重 要 。• VHT 5GHz 改 善 了 内 容 访 问 体 验 。– 以 千 兆 位 速 度 将 数 据 下 载 速 度 提 升 了 3 倍– 以 额 外 网 络 容 量 同 时 播 放 多 部 影 片– 视 频 游 戏 过 程 中 没 有 明 显 延 迟– 有 史 以 来 功 耗 最 低 的 <strong>Wi</strong>-<strong>Fi</strong>– 可 覆 盖 整 个 家 庭Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 52以 我 们 的 长 期 互 操 作 性 承 诺 为 基 础• VHT 5GHz 认 证 设 备 将 能 够 在 5GHz 频 段 上 与 传 统 的 <strong>Wi</strong>-<strong>Fi</strong> CERTIFIED n 设 备 互操 作 。• VHT 5GHz 设 备 预 计 将 采 用 双 频 段 , 在 2.4GHz 频 段 上 提 供 与 数 十 亿 部 <strong>Wi</strong>-<strong>Fi</strong>CERTIFIED 设 备 的 互 操 作 性 。• VHT 5GHz 网 络 可 处 理 混 合 设 备 , 同 时 性 能 不 <strong>会</strong> 出 现 显 著 下 降 。Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium53


VHT 5GHz 可 支 持 多 个 高 清 质 量 视 频 流• 将 多 个 高 清 质 量 视 频 可 靠 地 流 传 输 到 多 个 设备 。• 在 与 <strong>Wi</strong>-<strong>Fi</strong> CERTIFIED n 相 似 的 范 围 内 , 覆盖 整 个 家 庭 , 并 提 高 质 量 。• 源 自 DVR 或 PC 的 压 缩 视 频 ( 例 如 ,〜10Mbps) 可 被 传 输 到 3 台 电 视 中 的 任 意 一 台 。• 尽 管 存 在 其 他 网 络 活 动 和 邻 近 <strong>Wi</strong>-<strong>Fi</strong> 网 络 ,仍 能 够 可 靠 地 传 输 视 频 内 容 。Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 54VHT 5GHz 可 支 持 快 速 同 步 和 传 输• 抖 动 和 延 迟 并 不 是 关 键 问 题 ; 传 输 所 耗 费 的 时 间 才 是 重 要 问 题 。• 下 载 高 清 电 影 , 消 磨 旅 途 时 光 。– 5 分 钟 内 即 可 传 输 25GB 的 高 清 电 影 文 件 。• 与 朋 友 即 时 分 享 相 册 。– 150 个 1.25MB 的 JPEG 文 件 , 每 个 文 件 传 输 用 时 不 到 2 秒 。Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium55


VHT 5GHz 可 用 于 在 大 型 礼 堂 内 进 行 视 频 演 示• 使 用 VHT 5GHz 可 满 足 速 率 、 延 迟 时 间 和 范 围 方 面 的 各 项 要 求 。• 可 将 视 频 与 音 频 投 影 到 200 米 之 外 的 大 屏 幕 上 。• 可 在 没 有 明 显 延 迟 的 情 况 下 用 几 种 语 言 传 输 高 清 语 音 , 以 适 应 不 同 听 众 群 的 需 求 。Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 56MIIT has proposed opening more 5GHz spectrum5150MHz5250MHz5350MHz5470MHz5725MHzChinaEurope andJapanUnited StatesConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium57


60 GHzMulti-Gigabit ConnectivityConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 5860GHz 是 <strong>Wi</strong>-<strong>Fi</strong> 的 一 种 补 充 , 可 支 持 多 千 兆 位 数 据 速 率在 临 近 设 备 之 间 提 供 安 全 的 低 延 时 多 千 兆 位 网 络 连 接 , 以 支持 新 一 代 的 数 字 家 庭 —— 这 一 愿 望 将 <strong>成</strong> 为 现 实 。• <strong>Wi</strong>-<strong>Fi</strong> 和 60GHz 将 共 同 把 打 造 不 受 线 缆 限 制 的 高 保 真联 网 家 庭 这 一 愿 望 变 为 现 实 。• 该 新 计 划 将 <strong>会</strong> 认 证 的 设 备 类 型 包 括 电 视 机 、 机 顶 盒 、笔 记 本 电 脑 、 手 机 、 平 板 电 脑 等 , 此 外 还 <strong>会</strong> 认 证 接 入 点 。• 该 计 划 预 计 在 2014 年 推 出 。• <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> 对 60HGz 设 备 的 认 证 将 <strong>会</strong> 给 用 户 在 采 用新 技 术 时 带 来 信 心 。• 支 持 <strong>Wi</strong>-<strong>Fi</strong> 的 60 GHz 设 备 还 可 以 与 数 十 亿 部 现 有 的 <strong>Wi</strong>-<strong>Fi</strong>CERTIFIED 设 备 互 操 作 。Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium59


60GHz 认 证 计 划 将 <strong>会</strong> 提 供 符 合 人 们 预 期 的 出 色 <strong>Wi</strong>-<strong>Fi</strong> 用户 体 验• 多 千 兆 位 数 据 速 率 : 用 户 可 在 设 备 之 间 ( 比 如 从 机 顶 盒 或 笔 记 本 电 脑 到 电 视 ) 传输 低 延 时 的 未 经 压 缩 高 清 视 频 。• 快 速 <strong>会</strong> 话 转 移 : 多 频 设 备 可 支 持 数 据 流 从 60 GHz 到 5GHz 和 2.4GHz 的 无 缝 切换 , 从 而 提 供 覆 盖 整 个 家 庭 的 高 性 能 网 络 连 接 、 这 是 基 于 多 个 更 高 传 输 速 率 的 60GHz 连 接 。• IP 连 通 性 : 设 备 可 以 利 用 越 来 越 多 的 基 于 IP 的 技 术 , 包 括 <strong>Wi</strong>-<strong>Fi</strong> Direct 和 <strong>Wi</strong>-<strong>Fi</strong>Display。• 电 源 管 理 技 术 : 在 不 作 为 流 量 源 或 流 量 目 的 期 间 , 电 池 供 电 设 备 可 以 利 用 机 制 休眠 , 从 而 降 低 功 耗 。• 安 全 性 : 空 中 传 输 将 使 用 最 新 一 代 的 安 全 技 术 进 行 加 密 。Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 60使 用 60GHz 接 驳 不 带 线 缆 的 外 围 设 备• 计 算 设 备 —— 包 括 笔 记 本 电 脑 和 平 板 电 脑 的 外 形 设 计 越 来 越 紧 凑 纤 巧 , 减 少 了 通过 线 缆 连 接 的 外 围 设 备 所 占 的 空 间 。• 设 备 附 近 区 域 中 ( 小 于 10 米 范 围 ) <strong>会</strong> 使 用 许 多 类 型 的 外 围 设 备 , 诸 如 鼠 标 、 显 示器 或 键 盘 等 。• 使 用 <strong>Wi</strong>-<strong>Fi</strong> CERTIFIED 60GHz 产 品 , 设 备 可 以 安 全 地 处 理 多 个 外 设 , 即 使 每 件产 品 是 由 不 同 公 司 生 产 的 。Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium61


旅 途 中 在 设 备 之 间 传 输 未 经 压 缩 的 高 清 电 影• 提 供 可 下 载 影 片 的 公 共 信 息 亭 , 比 如 机 场 的 自 助 服 务 亭 , 是 向 携 带 手 持 式 设 备 的 用户 供 应 影 片 的 良 好 途 径 。• 高 达 多 千 兆 位 的 下 载 速 度 让 用 户 在 一 分 钟 之 内 或 登 机 前 在 通 往 机 场 登 机 门 的 途 中 就可 以 下 载 一 部 未 经 压 缩 的 高 清 电 影 。• 自 助 服 务 亭 可 同 时 支 持 多 个 传 输 , 这 意 味 着 用 户 排 队 等 候 的 时 间 将 <strong>会</strong> 更 短 。HD Movie #1HD Movie #2HD Movie #3Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 62使 用 60GHz 播 放 高 清 视 频 , 用 户 可 以 把 电 视 机 放 在 室内 的 任 何 位 置• Mary 的 机 顶 盒 (STB )HDMI 接 口 设 置 在 一 个 橱 柜 中 , 与 约 10 米 外 的 高 清 电 视(HDTV ) 相 对 。• 用 一 条 长 达 10 米 的 HDMI 电 缆 穿 过 房 间 ? 我 们 不 <strong>会</strong> 这 么 做 。• Mary 可 以 使 用 一 对 60GHz加 密 狗 将 HDMI 接 口 连 接 到每 个 设 备 。• 音 频 / 视 频 内 容 可 以 从 机 顶 盒(STB ) 无 线 流 传 输 到 高 清电 视 (HDTV )。Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium63


<strong>Wi</strong>-<strong>Fi</strong> CERTIFIED Miracast现 已 为 世 界 各 地 的 屏 幕 所 采 用Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 64联 网 环 境 日 益 受 到 消 费 者 <strong>欢</strong> <strong>迎</strong> ……• 移 动 用 户 平 均 拥 有 3 台 可 连 接 互 联 网 的 设 备 , 其 中18% 的 人 拥 有 5 台 甚 至 更 多 ( 瞻 博 网 络 公 司 )。• 娱 乐 服 务 内 容 范 围 呈 爆 炸 式 增 长 :– 世 界 各 地 的 用 户 每 月 在 YouTube 上 观 看 视 频 的 时 间 长达 40 亿 小 时 。– 迄 今 为 止 美 国 Netflix 用 户 已 经 使 用 该 服 务 播 放 视 频 内容 超 过 20 亿 小 时 。– 在 日 本 , 截 至 2012 年 3 月 ,Niconico 视 频 拥 有 2648 万用 户 。– 在 韩 国 ,2010 年 首 次 推 出 的 TVing 拥 有 超 过 350 万 用 户 ,是 该 国 最 大 的 针 对 智 能 手 机 、 平 板 电 脑 、 个 人 电 脑 和其 他 屏 幕 设 备 的 多 屏 服 务 。– 应 用 程 序 的 使 用 持 续 激 增 —— 从 智 能 手 机 扩 展 到 平 板电 脑 、 电 子 书 阅 读 器 和 电 视 等 设 备 。Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium65


…… 但 可 供 我 们 发 挥 的 空 间 还 有 很 多• 娱 乐 体 验 经 常 被 “ 困 ” 在 一 台 设 备上 。• 专 有 解 决 方 案 限 制 了 用 户 的 选 择 。• 现 有 解 决 方 案 的 设 置 与 使 用 需 要 具备 专 业 知 识 和 时 间 。• 并 非 所 有 解 决 方 案 都 支 持 高 级 内 容 。<strong>Wi</strong>-<strong>Fi</strong> CERTIFIED Miracast 是 在展 望 真 正 的 联 网 多 媒 体 的 基 础 上推 出 的 。Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 66Miracast <strong>成</strong> 功 地 将 您 的 应 用 程 序 从 小 屏 幕 带 到 大 屏 幕•CE 供 应 商 数 量 众 多• 广 泛 的 芯 片 支 持• <strong>成</strong> 熟 的 技 术任 意 设 备 ,任 意 内 容• 行 业 标 准 内 容 保 护•WPA2 TM 安 全 性• <strong>Wi</strong>-<strong>Fi</strong> Direct• <strong>Wi</strong>-<strong>Fi</strong> ProtectedSetup• 简 化 配 置全 行 业 解 决 方 案易 于 使 用Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium67


<strong>Wi</strong>-<strong>Fi</strong> CERTIFIED Miracast 允 许 用 户 在 任 意 品 牌 的认 证 设 备 之 间 显 示 内 容• <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> 如 今 已 经 开 始 在 世 界 各 地 的 实 验 室 测 试 并 认 证 Miracast 设 备 。• 现 在 , 诸 如 平 板 电 脑 、 手 机 、 电 视 和 笔 记 本 电 脑 等 显 示 设 备 可 以 寻 求 获 得 该 认证 。• 拥 有 芯 片 、 计 算 技 术 和 消 费 电 子 厂 商 的 广 泛 支 持 。• <strong>Wi</strong>-<strong>Fi</strong> CERTIFIED Miracast 设 备 :– 使 用 了 <strong>Wi</strong>-<strong>Fi</strong> Direct —— 不 需 要 访 问 <strong>Wi</strong>-<strong>Fi</strong> 网 络 。– 可 与 其 他 品 牌 进 行 互 操 作 。– 采 用 了 WPA2 安 全 保 护 。– 支 持 高 级 内 容 。– 提 供 简 化 的 发 现 与 设 置 操 作 。Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 68随 心 所 欲 观 看 内 容在 电 视 上 观 看 智 能 手 机 或 平 板 电 脑 上 的 视频 内 容在 任 意 平 板 电 脑 上 观 看 有 线 电 视 / 卫 星 电 视机 顶 盒 的 现 场 直 播 节 目Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium69


即 使 没 有 网 络 , 设 备 之 间 也 可 直 接 互 连与 <strong>会</strong> 议 室 投 影 仪 实 时 共 享 笔 记 本 电 脑 屏 幕Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 70今 日 议 程时 间主 题9:30 – 10:15 主 旨 演 讲 : <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> ® —— 无 缝 连 接10:15 – 10:30 协 助 单 位 – 深 圳 电 信 <strong>研</strong> 究 院 发 言10:30 – 11:00 <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> 计 划 路 线 图11:00 – 11:45 计 划 状 态 更 新11:45 – 12:45 午 餐12:45 – 13:30 计 划 聚 焦 :<strong>Wi</strong>-<strong>Fi</strong> CERTIFIED TDLS13:30 – 15:00 计 划 聚 焦 :<strong>Wi</strong>-<strong>Fi</strong> CERTIFIED Miracast15:00 – 15:15 茶 歇15:15 – 16:00 计 划 聚 焦 :VHT 5G16:00 – 17:00 问 答 与 结 语Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium71


今 日 议 程时 间主 题9:30 – 10:15 主 旨 演 讲 : <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> ® —— 无 缝 连 接10:15 – 10:30 协 助 单 位 – 深 圳 电 信 <strong>研</strong> 究 院 发 言10:30 – 11:00 <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> 计 划 路 线 图11:00 – 11:45 计 划 状 态 更 新11:45 – 12:45 午 餐12:45 – 13:30 计 划 聚 焦 :<strong>Wi</strong>-<strong>Fi</strong> CERTIFIED TDLS13:30 – 15:00 计 划 聚 焦 :<strong>Wi</strong>-<strong>Fi</strong> CERTIFIED Miracast15:00 – 15:15 茶 歇15:15 – 16:00 计 划 聚 焦 :VHT 5G16:00 – 17:00 问 答 与 结 语Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 72<strong>Wi</strong>-<strong>Fi</strong> CERTIFIED TDLS ( 通 道 直 接 链 路 建 立 ) 计 划 聚 焦Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium73


Tunneled Direct Link Setup - Overview• Tunneled Direct Link Setup (TDLS) enables devices in a network toautomatically set up a secure direct link, without user intervention, whilemaintaining the connection with the network– the network can be a BSS or a <strong>Wi</strong>-<strong>Fi</strong> Direct network– the TDLS direct link is secure if the network is secure– TDLS enables dynamic direct connections between devices in a network• Based upon IEEE 802.11z specification, TDLS is characterized by the use ofsignaling frames that are encapsulated in data frames that can be transmittedthrough the AP transparently. Hence two or more <strong>Wi</strong>-<strong>Fi</strong> TDLS stations can setup direct links providing, in many scenarios, an improved user experience withrespect to speed of connection and overall bandwidth efficiency– The processes used in TDLS are:• Discovery• Setup• Teardown• TDLS Peer U-APSD (Power Save)• Channel SwitchConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 74TDLS - Benefits• TDLS eliminates the hop through the AP or GO*• the resulting increase in throughput can be very large, especially when thedevices are close apart or when a wider channel can be used in an empty band– the latency reduction will also be significant, because the queuing delay at the AP iseliminated• TDLS link set up is automatic and without user intervention– the devices already have a secure connection with the AP/GO, which is used to set up asecure TDLS direct link– the user does not need to enter a separate passphrase for every direct link in thenetwork* Defined in P2PConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium75


TDLS - Benefits• Concurrent access between the AP/GO and the direct link is implicit with TDLS• TDLS supports dynamic channel switching– direct links can be dynamically switched from a congested channel in the 2.4 GHz bandto an empty wideband channel in the 5 GHz band– the throughput is increased even more, while traffic is offloaded from the base network• TDLS supports power save to reduce power consumption• TDLS is not limited by the capabilities of the base network– An 80 MHz 11ac direct link can be set up in an 11a BSSConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 76TDLS Use CasesRapid Synch betweenSmart Phone Device and Home PCNotes:1. Always WPA2/CCPMP security(unless AP is Open)2. Can negotiate better PHYand/or ChannelDirect Link Video Streaming<strong>Wi</strong>reless Printingin a Peer to Peer Network<strong>Wi</strong>reless Data Backup in<strong>Wi</strong>reless Conference Room Projector StreamingHome Infrastructure NetworkConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium77


Throughput Example 111g AP / 11n direct linkAP/GOThroughput via AP: 14 MbpsThroughput via TDLS direct link: 110 MbpsTDLS gain: 720%14 Mbps36 Mbps11g36 Mbps11g110 MbpsSTA1144 Mbps11nSTA2Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 78Throughput Example 211g AP / 11n direct link(Channel switching to 5GHz 40MHz)AP/GOThroughput via AP: 14 MbpsThroughput via TDLS direct link: 210 MbpsTDLS gain: 1,400%14 Mbps36 Mbps11g36 Mbps11g210 MbpsSTA1300 Mbps11nSTA2Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium79


Throughput Example 311g AP / 11n direct link(Channel switching from congested 2.4 to 5)AP/GOThroughput via AP: 1 MbpsThroughput via TDLS direct link: 210 MbpsTDLS gain: 21,000%1 Mbps36 Mbps11g, congested36 Mbps11g, congested210 MbpsSTA1300 Mbps11nSTA2Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 80Throughput Example 411n AP / 11ac direct link(AP in a corner of the house)AP/GOThroughput via AP: 3 MbpsThroughput via TDLS direct link: 1 GbpsTDLS gain: 36,000%3 Mbps7.2 Mbps11n7.2 Mbps11n1 GbpsSTA11.3 Gbps11acSTA2Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium81


Data Frame Format – addressing for TDLSACK PolicyEOSPMissing in“Null” Frame01 = Data0000 = Data0010 = Null1 = PSDirectFrom APTo AP Duration/ID <strong>Fi</strong>eld -BridgeRA = RX Address (wireless)TA = TX Address (wireless)DA = DestinationSA = SenderBSSID = AP MAC AddressConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 82IP Encapsulation in 802.11Ethertype examples:0x0800 IPv40x0806 ARP0x809b AppleTalk0x86dd IPv60x888e EAP over LAN (802.1X)0x890d Remote Req/Resp 11rTDLSUsed for AppleTalkUsed for all otherprotocolsConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong>IP Packet is replaced by the TDLS Action Frame<strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium83


Tunneled TDLS Action FramesTDLS Action Frames encapsulated in Data Frames• Transmitted through AP transparently• No requirement for AP to be TDLS awareNote: When Packets sent Direct• Address 1 = Peer TDLS STA MAC• Address 2 = Transmitting TDLS STA• Address 3 = BSSIDConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 84TDLS DiscoveryUnicast RequestBSSID must be correctIf not , do not respondLink IdentifierResponder informsall its capabilities - directlyThe TDLS Initiator STA sends a TDLS Discovery Request frame to aunicast DA via the AP and TDLS capable STA responds directly with aTDLS Discovery Response frame.Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium85


TDLS Setup• Setup– TDLS initiator STA sends a “TDLS Setup Request” frame to the intended TDLSresponder STA via the AP– TDLS responder STA replies with a “TDLS Setup Response frame”, via the AP– TDLS initiator STA sends a “TDLS Confirm” frame to the TDLS responder STA via the AP• Traffic now flows directlyConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 86TDLS SetupSent via APTDLS SupportPeer U-APSD Buffer STAChannel SwitchingTDLS Setup Response Frame is Identical except:• Action is 1 (response)• “Status Code” inserted after “Action”Sent via APReplaces QoS Capabilitieselement in 11zContains QoS Info <strong>Fi</strong>eldSent via APConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium87


TDLS SetupInitiatorAPRecipientTDLS Setup RequestTDLS ConfirmTDLS Setup ResponseStatus Code 0Extended Capabilities IE• TDLS• Peer U-APSD,• Channel SwitchingData• In Link Identifier, check BSSID• If TDLS Setup Request received after sending a TDLS Setup Request• TDLS STA has higher MAC Address, send Setup Request again• TDLS STA has lower MAC address, send TDLS Setup Response• AP can set “TDLS Prohibited bit” in BeaconConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 88TDLS TeardownReason Codes:25 TDLS direct link teardown due to TDLS peer STA unreachable via the TDLS direct link(Teardown frame sent via AP)26 TDLS direct link teardown for unspecified reason (over Direct Link)If other STA becomes unreachable, TDLS Teardown is not acknowledged soThen TDLS Teardown is sent through the AP (reason code 25).Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium89


Security• TDLS STA can set the direct link security to Open when the BSS AP security isset to Open• TDLS STA sets the direct link security to WPA2/CCMP when the BSS APsecurity is set to:• WEP (Note that WEP is not tested anymore in <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong>)• WPA/TKIP (Note that TKIP will soon not be tested in <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong>)• WPA2/CCMP• TPK Handshake messages are included in the TDLS Setup messages, asfollows:• TPK Handshake Message 1 in the TDLS Setup Request frame• TPK Handshake Message 2 in the TDLS Setup Response frame• TPK Handshake Message 3 in the TDLS Setup Confirm frameConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 90RSN IEProtect Unicast frames1 = 802.1X or PMKSA caching RSNA default2 = PSK3 = FT authentication over 802.1X4 = FT authentication using PSK1 = WEP-402 = TKIP4 = CCMP5 = WEP-104Faster handoffs when PMK is cached.STAs may provide list of master keys IDson assoc in attempt to bypass authentication.Used only in (Re)Association Request and FT authenticationConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium91


Fast BSS Transition IE - FTIE0 = No MICConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 92Power SaveTwo Basic Power Save schemes are described in 802.11z– TDLS Peer Power Save Mode (TDLS Peer PSM) is a power save mechanism that can be usedbetween TDLS peer STAs, and which is based on a periodic wakeup schedule– Peer U-APSD, similar to U-APSD (WMM PS)• Peer U-APSD Buffer STA (Mandatory in <strong>Wi</strong>-<strong>Fi</strong> Certification)• Peer U-APSD Sleep STA (Optional)• Peer U-APSD– Sleep STA sets one or more U-APSD Flags to 1 in QoS Info field– If one STA sets all U-APSD Flags to 0, it is the Buffer STA– If both STAs set one or more U-APSD Flags to 1, then both act as sleeping Buffer STAs• In the TDLS Setup Request and Response Frames, Extended Capabilities elementindicates support for Peer U-APSD Buffer STAConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium93


Peer U-APSD – Buffer STA is awake• Buffer STA has all 4 U-APSD flags set to 0 in the Request Frame QoS Info <strong>Fi</strong>eld.• Sleep STA has at least one U-APSD flags set to 1 in the Response Frame QoS Info <strong>Fi</strong>eld,or in Confirm frame(in practice set all four to 1)• Sleep STA– Sends data null to AP with Power Management field set to 1– Sends data null to Buffer STA with Power Management field set to 1– Then ‘Sleeps’• Buffer STA– When buffered packets are present, sends TDLS Peer Traffic Indication frame, via AP.<strong>Fi</strong>rst we will look at the frame and then at the full sequence.Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 94TDLS Peer Traffic Indication and Response framePTI is optional(NOT USED)Identifies lasttransmitted MPDUSet to 1 indicates packet(s) bufferedConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium95


Power Save Sequence – Buffer STA awake1. Buffer STA buffers packet(s) for Sleep STA2. Buffer STA sends TDLS Peer Traffic Indication frame, via AP3. AP sets TIM in Beacon for Sleep STA4. Sleep STA wakes for Beacon, notes TIM and triggers AP to send TDLS PeerTraffic Indication frame to Sleep STA5. Sleep STA• Sends at least TDLS Peer Traffic Response frame direct to Buffer STA and initiatesService Period• Response frame acts as a trigger frame• (PTI Control frame is Not Used in practice)6. Buffer STA sends packet with EOSP = 1,Sleep STA goes back to sleepConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 96Power Save Sequence – Buffer STA awakePS Action is same asWMM PSBi-Direction traffic will triggerConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium97


When both STAs Sleep (Optional)• Effectively both STAs act as Buffer STAs and buffer traffic for their Peer STA• “Acting” Buffer STA must stay awake after sending TDLS Peer Traffic IndicationFrame at least until:– TDLS Peer Traffic Indication frame response received– End of Service Period– (QoS Null sent with EOSP if no buffered traffic)• The “acting” Sleep STA is still a Buffer STA, so every received QoS packet is atrigger frame, hence the STA will try to send QoS Nulls (with EOSP=1) after eachreceived frame.• Both sleep when no Service Period existsConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 98Buffer STA Sleeps – Set UpConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium99


Both STAs Sleep and Buffer U-APSDAs STA 2 is a Buffer STA,each received packetStarts a new SPConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 100TDLS Channel Switching• TDLS STAs can negotiate to move to another ChannelFor example from a congested 2.4GHz channel to a 5GHz channelUsually• When moving to an off-channel, the STAs register as Sleeping with the AP sothat the AP will buffer traffic for them• When operating on the “Off Channel”, the STAs must return periodically to the“Base Channel” to– receive Beacons and TIMs (Listen Interval) and broadcast and multicast traffic (DTIMs)– Communicate with other BSS STAsConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 101


TDLS Channel Switch – Basic Procedure• STA 1 Originator– Enters Power Save with AP– Sends TDLS Channel Switch Request to STA 2• Target Channel• Link Identifier• Channel Switch Timing• STA 2– Enters Power Save with AP– Sends TDLS Channel Switch Response• Status Code 0 (Accepted)• Target Channel• Link Identifier• Channel Switch Timing• STA 1 and 2 switch to Off-Channel– Data must flow on channel before “Switch Timeout”, if not, return to Base Channel• STA 1 and 2 will switch back to Base Channel, periodically, to listen to AP Beacons and possiblycommunicate with BSS STAs– Based upon Listen Period and DTIM• Note: AP can advertise “TDLS Channel Switching Prohibited”Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 102TDLS Channel Switch– Behavior on Off Channel and Base Channel• Off Channel– Either STA may send a TDLS Channel Switch Request with the base channel as thetarget. The peer STA will then respond with a TDLS Response and the switch to basechannel is made.– Alternatively (expected behavior), either STA may send an unsolicited TDLS ChannelSwitch Response with the base channel as target. The peer STA will respond with anACK and the switch to base channel is made– Note that when on an Off Channel, the TDLS STAs are never in power save mode..• Base Channel– The originator STA sends a TDLS Channel Switch Request with the off channel as thetarget. The peer STA will then respond with a TDLS Response and the switch to OffChannel is made,Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 103


TDLS Channel Switch Request/ResponseConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 104Channel Switching operationConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 105


Questions ???Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 106今 日 议 程时 间主 题9:30 – 10:15 主 旨 演 讲 : <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> ® —— 无 缝 连 接10:15 – 10:30 协 助 单 位 – 深 圳 电 信 <strong>研</strong> 究 院 发 言10:30 – 11:00 <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> 计 划 路 线 图11:00 – 11:45 计 划 状 态 更 新11:45 – 12:45 午 餐12:45 – 13:30 计 划 聚 焦 :<strong>Wi</strong>-<strong>Fi</strong> CERTIFIED TDLS13:30 – 15:00 计 划 聚 焦 :<strong>Wi</strong>-<strong>Fi</strong> CERTIFIED Miracast15:00 – 15:15 茶 歇15:15 – 16:00 计 划 聚 焦 :VHT 5G16:00 – 17:00 问 答 与 结 语Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 107


<strong>Wi</strong>-<strong>Fi</strong> CERTIFIED Miracast 计 划 聚 焦Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 108Overview: Introduction• This presentation focuses on the specification and possible use cases for <strong>Wi</strong>-<strong>Fi</strong> Displaytechnology.– This training is based on a specification that is under IPR review.• W-<strong>Fi</strong> <strong>Alliance</strong> provides NO GUARANTEE of the degree to which this training material represents the final <strong>Wi</strong>-<strong>Fi</strong>Display specification– Functionality beyond the scope of the <strong>Wi</strong>-<strong>Fi</strong> Display specification will be identified but not discussed– Details of prerequisite certifications shall not be discussed in this moduleReference material :Specification<strong>Wi</strong>-<strong>Fi</strong> Display V1.47 draft<strong>Wi</strong>-<strong>Fi</strong> P2P V1.1<strong>Wi</strong>-<strong>Fi</strong> Protected Setup V2.0WMM V1.2IEEE 802.11-2007 (WPA2)IEEE 802.11n<strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member(Login required)Only available to <strong>Wi</strong>-<strong>Fi</strong> DisplayTechnical task-group membersDownload for free fromhttp://www.wi-fi.org/specifications.phpNon-member(Purchase required)Not yet availableAvailable for purchase athttps://www.wi-fi.org/knowledge_center_overview.php?type=4Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 109


Overview of <strong>Wi</strong>-<strong>Fi</strong> Display• The <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> is developing a “<strong>Wi</strong>-<strong>Fi</strong> Display Specification” to enable andsustain a secure connection between multimedia devices, based on <strong>Wi</strong>-<strong>Fi</strong>, tofacilitate audio/video rendering– The draft specification is currently available only to <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Display Task Groupmembers– The specification is planned for broad membership and public release at the time whencertification for <strong>Wi</strong>-<strong>Fi</strong> Display technology becomes available– Members will be able to certify their devices for the <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Miracast TM certificationprogram using a test plan written for this specification• The branded name for this technology is <strong>Wi</strong>-<strong>Fi</strong> Miracast– Only devices certified for <strong>Wi</strong>-<strong>Fi</strong> Display shall be able to use the brand and supportingmarketing material• This presentation shall use “WFD” as an abbreviation for the technology• Terminology– Source : A device that is capable of transmitting multimedia content– Sink : A device that is capable of receiving and rendering multimedia contentConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 110Basic <strong>Wi</strong>-<strong>Fi</strong> Display Definitions• Source: A <strong>Wi</strong>-<strong>Fi</strong> Display device that is capable of transmitting content• Sink: A <strong>Wi</strong>-<strong>Fi</strong> Display device that is capable of receiving and rendering contentVideo Payload<strong>Wi</strong>-<strong>Fi</strong> DisplaySourceAudio PayloadControl<strong>Wi</strong>-<strong>Fi</strong> DisplaySink• Session: A <strong>Wi</strong>-<strong>Fi</strong> Display connection between a Source and a Sink devicewhere content is sourced at the Source device and rendered at the Sink device.• Topology: The arrangement in which the nodes of a network are connected toeach other and (in some cases) to other networks• TDLS: Tunneled Direct Link Setup. An 802.11 protocol to setup a direct <strong>Wi</strong>-<strong>Fi</strong>link between two peer client devices (STAs) that are members of the same BSS.TDLS is another <strong>Wi</strong>-<strong>Fi</strong> Certification program.Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 111


<strong>Wi</strong>-<strong>Fi</strong> Display Certification Requirements• All WFD Source and Sink devices shall pass the following WFA certifications<strong>Wi</strong>-<strong>Fi</strong> DisplayTDLS (optional)Note : TDLS does not work for WFDuse cases where the Source, Sink, orboth do not have access to an AP<strong>Wi</strong>-<strong>Fi</strong> Direct(including L2 Service Discovery optional)<strong>Wi</strong>‐<strong>Fi</strong> Protected SetupApproved 11n• <strong>Wi</strong>-<strong>Fi</strong> Direct shall be enabled out-of-the-box• TDLS, if implemented, User shall able to enable.Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 112<strong>Wi</strong>-<strong>Fi</strong> Display : A Prime OpportunityIn-Stat <strong>Wi</strong>-<strong>Fi</strong> Entertainment Devices Shipments (in millions units)Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 113


<strong>Wi</strong>-<strong>Fi</strong> Display Program Objectives• Mirror a wired setup between a Source and Sink– Establish a point-to-point connection between Source and Sink.– Wherever possible, end-user <strong>Wi</strong>-<strong>Fi</strong> Display experience should mirror the wiredexperience in all ease of use, device discovery and quality of the rendered content• Key components of <strong>Wi</strong>-<strong>Fi</strong> Display– Enable and sustain connection – discover, pair, and sustain a <strong>Wi</strong>-<strong>Fi</strong> connection betweenthe source and sink to facilitate display of audio/video content on the sink– Easy to setup and configure, straight forward to discover and identify the appropriatedevice to securely connect to and simple to start/control/stop the display function– Provide at a minimum, the security of a typical <strong>Wi</strong>-<strong>Fi</strong> CERTIFIED link between theSource and Sink– Provide a mechanism so the Source and Sink can select the ‘best operating channel’ tomitigate potential RF interference from the environment: home, office, etc...Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 114<strong>Wi</strong>-<strong>Fi</strong> Display Market Target• WFD functionality targets both the entertainment and business markets– Enables easy sharing of content (both audio and video) and leverages the flexibility ofwireless• No need to find a cable with the correct type of connectors being readily available• No need to determine the appropriate port on the display device (usually in a hard to reach place)• No need to worry about passing cables around to switch from one source to another– <strong>Wi</strong>-<strong>Fi</strong> Display devices can be used in homes, home offices, small offices, public accessenvironments like hotspots, hotels, conventions centers, and large enterprises• <strong>Wi</strong>-<strong>Fi</strong> Display devices can be deployed and managed by consumers, serviceproviders, or enterprise IT departments.– A <strong>Wi</strong>-<strong>Fi</strong> Display device could be configured and managed by the end user for use in thehome environment– The same device, when placed in an enterprise environment, could be configured andmanaged by the enterprise IT department• <strong>Wi</strong>-<strong>Fi</strong> Display expected to be included into a wide range of target devices anddisplays– PCs, DTVs, STBs, entertainment/conference room projectors, handhelds, and other CEdevicesConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 115


<strong>Wi</strong>-<strong>Fi</strong> Display is Uniquely Positioned in the Market• Very cost effective, leverages the vast existing <strong>Wi</strong>-<strong>Fi</strong> infrastructure• Certified interoperability of Source and Sink devices• No restrictions on types of applications, files and/or DRM that can be streamed• Independent connectivity of devices– No need for an infrastructure network connection either to an access router and/or DMAlikedevice in order for <strong>Wi</strong>-<strong>Fi</strong> Display to work• Leverages existing <strong>Wi</strong>-<strong>Fi</strong> building blocks for a full-featured, easy-to-use offering– Ease of discovery and connection (<strong>Wi</strong>-<strong>Fi</strong> Direct® or TDLS [Tunneled Direct Link Setup])– Ease of setup (<strong>Wi</strong>-<strong>Fi</strong> Protected Setup)– Robust security (WPA2)• Supports several use cases that require a Source to both initiate networkconnection AND render content PRIOR to being actively connected– Other solutions require the Source and Sink to be connected to a network BEFORE theuse case startsConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 116<strong>Wi</strong>-<strong>Fi</strong> Display Future Compatibility• <strong>Wi</strong>-<strong>Fi</strong> Display is architected to address a set of current Use Cases that arecommon today with existing <strong>Wi</strong>-<strong>Fi</strong> CERTIFIED 11n technology, whileremaining scalable and extensible for future <strong>Wi</strong>-<strong>Fi</strong> technologies.– A <strong>Wi</strong>-<strong>Fi</strong> Display-certified Source device in purchased 2014 will be backwards compatibleto a <strong>Wi</strong>-<strong>Fi</strong> Display-certified Sink device purchased in 2012• Fundamental <strong>Wi</strong>-<strong>Fi</strong> Display Session creation/execution procedures will beextendable to <strong>Wi</strong>-<strong>Fi</strong> technology enhancements such as new PHYs,enhancements of 5GHz networking, updated codecs and new use cases– Discovery (i.e. capability advertisement and capability negotiation)– Pairing– Session establishment procedures defined in <strong>Wi</strong>-<strong>Fi</strong> Display will be extendable totechnology enhancements to <strong>Wi</strong>-<strong>Fi</strong>• New PHYs• Technology advancements at 5 GHz• Updated Codec technology• Newer Use Cases.Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 117


Overview of <strong>Wi</strong>-<strong>Fi</strong> Display Technology• Start with frames at the Source device that are ready for rendering– Frames could be composed from one or more streams– Content for some of these streams may be non-local and could be delivered to theSource device using a DLNA-type technology – the Source device is a DLNA sink• Once the audio/video frames are composed for rendering, the task of rendering the composedframes at a remote display (the WFD Sink) requires operations that are not in the scope of DLNA.Hence DLNA and <strong>Wi</strong>-<strong>Fi</strong> Display could be viewed as complementary.• WFD-specific functionality referred to above includes:– Encoding (and corresponding decoding) for audio and video, elementary streampacketization, transport stream, etc– Set of mechanisms to control the audio and video encoders in near real-time to cope with<strong>Wi</strong>-<strong>Fi</strong> channel conditions• Near real-time variable bit-rate audio and video frame encoding/decoding– <strong>Wi</strong>-<strong>Fi</strong> specific cross-layer optimizations• Feedback from Sink device and on locally sensed radio conditions to select and operate asefficiently as possible under the given conditions• WFD devices need to discover and know enough details about the capabilities ofthe discovered devices to enable the desired device to be selected at the firstattempt prior to establishing any connectionConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 118<strong>Wi</strong>-<strong>Fi</strong> Display Video Format Support• <strong>Wi</strong>-<strong>Fi</strong> Display supports the H.264 codec– Two H.264 Profiles supported, with level range of 3.1 - 4.2 for each• CBP (Constrained Base Profile)• CHP (Constrained High Profile)– Minimum / Mandatory required support is CBP at level 3.1• <strong>Wi</strong>-<strong>Fi</strong> Display is proposed to support 32 video resolutions and frame rates– 17 CEA (Consumer Electronic Association) formats• 640 x 480p up to 1920 x 1080p• Frame rates from 24 frames per second (fps) to 60 fps– 30 VESA formats• 800 x 600p up to 1920 x 1200p• Frame rates at 30 and 60 fps– 12 handheld formats• 640 x 360p up to 960 x 540p• Frame rates at 30 and 60 fps– Minimum / Mandatory required support is 640 x 480p at 60 fpsConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 119


<strong>Wi</strong>-<strong>Fi</strong> Display Audio Format Support• <strong>Wi</strong>-<strong>Fi</strong> Display is proposed to support 9 Audio Codecs– 2 LPCM modes• 44.1 k /48 k Hz, 16 bits, 2 channels– 4 AAC modes– 3 AC3 modes• The only mandatory codec is LPCM16-48-2• 48 kHZ sampling, 16 bits, 2 channelsConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 120<strong>Wi</strong>-<strong>Fi</strong> Display Source / Sink Topology• Source to Sink (#1)– A source device streams its local content to the sink device• Source (with access to AP) to Sink (#2)– A source device streams its local content to the sink, while connected to the WLAN– A source device streams internet content from a WLAN to the sink deviceConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 121


<strong>Wi</strong>-<strong>Fi</strong> Display Source/Sink Topology (continued)• Source (AP present, not accessed) to Sink (#3)– Source device streams its local content to the sink device while in the presence (but notconnected to) a WLAN. Note: In this context ‘presence’ means that WLAN senses someinterference from WFD.• Source to Sink: Both are connected via WLAN AP to the Internet (#4)– A source device streams its local content to the sink device. Both Source and Sink areconnected to the AP. The source may stream local content or content from WLAN.Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 122<strong>Wi</strong>-<strong>Fi</strong> Display Use Case SummaryUse Case Source SinkBlu-ray® to streams DTV (digital TV/media projector) Blu-ray DTVGame Console streams to DTV Game console DT VSet Top Box streams to DTV Set Top Box DTVCamera/Camcorder streams to DTVPC / Handheld streams to DTVPC / Handheld streams to a projectorCamera orCamcorderPC orHandheldPC orHandheldDTVDTVProjectorHandheld streams to PC Handheld PCPC streams to wireless monitor PC MonitorHandheld streams to touch screen Handheld TouchscreenConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 123


Common Requirements for WFD Use Cases• WFD Session Setup– Setup for a secure connection shall be intuitive and straight-forward– Setup shall be performed in the presence of an infrastructure WLAN but without requiring the sourceor sink to access it.– Setup shall be performed in absence of infrastructure WLAN• Source / Sink– If both the Source and the Sink have local screens, the Source OR the Sink shall have the ability toinitiate setup/pairing and WFD session start– If the Source has no local screen, the Sink shall initiate setup/pairing and WFD session start– A Sink shall only support one WFD session at a time• Devices shall negotiate to highest video format supported by Source and Sink• HDCP2.0 content protection shall be exercised for digital protected entertainment contents• WFD allows for a one-time pairing (pairing information is not stored anywhere) and for apersistent pairing (pairing information is saved for future use).Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 124Common Course of Events for all WFD Use Cases• <strong>Fi</strong>rst-time use (assumes Sink driving the User Interface)– Source and Sink devices are powered on– User interface is employed to• Discover all compatible WFD Source devices• List all discovered/paired Source devices• Select the Source of interest, authenticate, and securely pair it to the Sink of interest– Subsequent power-on’s do not require pairing of these two devices• Interact with Source to start the WFD session (e.g., stream content from Sourceto Sink)• WFD session can be disconnected from either device• Another WFD session can be automatically started as long as Source and/orSink are not in an active WFD sessionConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 125


<strong>Wi</strong>-<strong>Fi</strong> Display Use Cases: Base CaseBlu-ray® to DTV (Television/media projector)• User plays a Blu-Ray disk and views on a DTV in the room– Universal remote control used to access the BD player and the DTV control• Topology : 1 or 3– Source : Blu-Ray player– Sink : DTV• Unique Requirement– Since source has no local screen, the sink initiates setup/pairing and WFD session start• Course of Events– Initial pairing or auto pairing– Interact with BD to start the WFD session (e.g., select correct A/V input)– Interact with BD player (e.g., configure/control the playback of content from the source)Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 126<strong>Wi</strong>-<strong>Fi</strong> Display Use Cases: Base CaseBlu-ray® Streams BD-Live to DTV• User connects to BD-Live to access and stream internet content such asringtones, special features, wallpaper and more• Topology : 2 or 4– Source : Blu-Ray player– Sink : DTV– Source is connected to WLAN access point/router• Unique Requirements (in addition to Common Requirements)– WFD source-to-sink setup may be performed in presence of concurrent association– WFD session may minimally impact infrastructure WLAN’s and other devices’ wirelessperformance in the environment• Unique Course of Events (in addition to Common Course of Events)– Use of Blu-ray’s GUI on the DTV screen and Blu-ray WLAN connection to locate content– DTV displays (including Audio if present) all user interactions and content choices– Upon disconnection from BD-Live, DTV displays Blu-ray screen and user can startshowing locally stored contentConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 127


<strong>Wi</strong>-<strong>Fi</strong> Display Use Cases: Game Console to DTV• User displays game console content on DTV– Game controllers are connected to the console by <strong>Wi</strong>-<strong>Fi</strong> or other wireless technology– Game may be an online multiplayer game or device may be used for internet contentaccess• Topology : 1, 2, 3, or 4– Source : Games console– Sink : DTV• Unique Requirement– NONE• Unique Course of Events (in addition to Common Course of Events)– Local play on the game console is done with wireless controllers. The game behaves andreacts just like it does in a wired environmentConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 128<strong>Wi</strong>-<strong>Fi</strong> Display Use Cases: Set Top Box (STB) to DTV• User displays cable/satellite/IPTV programming on DTV– Supports picture-in-picture if the devices support it– Universal remote control used to control STB and DTV– STB may access and overlay internet content (i.e., Yahoo! <strong>Wi</strong>dgets, etc) on top of regularprogramming• Topology : 1, 2, 3, or 4– Source : STB– Sink : DTV• STB may be connected to network head-end directly or through intermediary residential gateway• STB and residential gateway may be connected via wired/WLAN networks• Content from network head-end may be delivered through cable/satellite or managed IP-networks• Unique Requirement– WFD may support overlap and any other internet content with cable/satelliteprogramming just like a wired environment does• Unique Course of Events (in addition to Common Course of Events)– NoneConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 129


<strong>Wi</strong>-<strong>Fi</strong> Display Use Cases: Camera/Camcorder to DTV• User displays pictures/video from <strong>Wi</strong>-<strong>Fi</strong> enabled camera/camcorder on DTV• Topology : 1, 3– Source : Camera/Camcorder– Sink : DTV• Unique Requirements– When running WFD in battery mode, power management features may be used to helpextend battery life as much as possible without compromising quality.– WFD allows for a one-time pairing (pairing information is not stored anywhere) and for apersistent pairing (pairing information is saved for future use).• Unique Course of Events (in addition to Common Course of Events)– NoneConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 130<strong>Wi</strong>-<strong>Fi</strong> Display Use Cases: Handheld to PC• User displays local or internet-accessed content from handheld on a PC• Topology : 1 or 3– Source : Handheld– Sink : PC• Unique Requirement– None– Note that this usage model is assumed to support the same management of WFDprofiles requirement as enterprise usage models• Unique Course of Events (in addition to Common Course of Events)– NoneConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 131


<strong>Wi</strong>-<strong>Fi</strong> Display Use Cases: PC to <strong>Wi</strong>reless Monitor• User displays content from desktop PC on wireless monitor with touch-screeninterface• Topology : 1 or 3– Source : PC– Sink : <strong>Wi</strong>reless Monitor• Additional Unique Requirements– None• Additional Unique Course of Events– NoneConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 132<strong>Wi</strong>-<strong>Fi</strong> Display Use Cases: Handheld to Touch Screen• User displays content from handheld/phone on a WFD-enabled touch screen ina car• Topology : 1 or 3– Source : Handheld– Sink : Touch screen• Additional Unique Requirements– None– Note that this usage model is assumed to support the same management of WFDprofiles requirement as enterprise usage models• Additional Unique Course of Events– NoneConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 133


Questions ???Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 134More About Sinks• Primary Sink– Primary Sink is an WFD Sink that is capable of rendering video content only or audio and videocontents.– If capable of rendering audio and video contents, it must also be capable of rendering video contentonly.• Secondary Sink– A Secondary Sink is a WFD sink that is capable of rendering audio content onlyConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 135


More About Sources and Sinks• A WFD Source shall support transmitting an MPEG2-TS that containsmultiplexed a single audio and a single video elementary streams.• A WFD Source may choose to transmit an MPEG2-TS that contains only a videoelementary stream.• A WFD Source may choose to transmit an MPEG2-TS that contains only anaudio elementary stream.• A Primary Sink shall support receiving an MPEG2-TS that contains only a videoelementary stream.• A Primary Sink may support receiving an MPEG2-TS that contains only an audioelementary stream.• A Secondary sink shall support receiving an MPEG2-TS that contains only anaudio elementary stream.Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 136WFD Specification Scope of WorkConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 137


WFD Source and Sink Functions and Services(Mandatory)Functions and Services Source PrimarySinkSecondarySink<strong>Wi</strong>‐<strong>Fi</strong> Display Device discovery M M M<strong>Wi</strong>‐<strong>Fi</strong> Display Capability negotiation M M MWFD connection setup, with one <strong>Wi</strong>‐<strong>Fi</strong> Display device M M M<strong>Wi</strong>‐<strong>Fi</strong> Display Session establishment, with one <strong>Wi</strong>‐<strong>Fi</strong> Display M M MdeviceSession termination M M MAV Stream Control using RTSP M M MM – Mandatory CapabilityO – Optional CapabilityConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 138WFD Source and Sink Functions and ServicesFunctions and Services Source Primary Sink Secondary SinkEncode and packetization of the captured DisplayMEncode and packetization of captured audioMMultiplex Display and audio payloadMTransport of video payload without audio O MTransport of audio payload without video O O MTransport multiplexed A/V payload M MDe‐multiplex Display and Audio payloadDe‐packetization and Decode of received Audio payload that is notmultiplexed with video payload.MOMRendering of decoded video on local display panel or a displayMpanel that is attached to a WFD sink (dongle)Rendering of decoded audio on local speakers or speakersMMattached to a WFD sink (dongle)AV Audio Stream Routing Control O O OConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 139


WFD Source and Sink Functions and ServicesFunctions and Services Source PrimarySinkSecondarySinkPersistent Display profiles O O OLink Content Protection (for protected content)O O ONote: If Link Content Protection is not supported either by thesource or the WFD sink, protected content shall not bestreamed.Power Save mechanisms M M MTime synchronization O O O<strong>Wi</strong>‐<strong>Fi</strong> Display Service discoveryO O O(prior to WFD connection establishment)Preferred Display mode O OUser Input Back Channel O OConcurrent WLAN operation O ORemote I2C O OCoupled sink operation O O OAV Audio steam Routing Control during coupled sink O O OoperationM – Mandatory CapabilityO – Optional CapabilityConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 140WFD Specification Reference ModelConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 141


WFD Audio / Video Payload ProcessingConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 142WFD Functional Blocks - Data and Control Planes• HDCP – High bandwidth Digital Content Protection• HIDC – Human Interface Device Constants• IP – Internet Protocol• MPEG2-TS – MPEG2 Transport Stream• PES – Packetized Elementary Stream• RTP – Real Time Protocol• RTSP – Real Time Streaming Protocol• TCP – Transport Control Protocol• UDP – User Datagram ProtocolConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 143


<strong>Wi</strong>-<strong>Fi</strong> Display Session EstablishmentSession Management StepDevice DiscoveryService Discovery [opt]Device SelectionDisplay Connection SetupCapability NegotiationSession EstablishmentTransport SetupUser Input Back Channel Setup [opt]Link Content Protection Setup [opt]Payload ControlDisplay Session TeardownAllows Source and Sink devices to discover each other, prior toConnection SetupAllows Source and Sink devices to discover each other’s servicecapabilities, prior to Connection SetupSelects remote device for Connection Setup.User input and local policies may be used in this step.Selects a method (<strong>Wi</strong>-<strong>Fi</strong> Direct or TDLS) for Connection Setup.Establishes WPA2 single-hop link with selected deviceRTSP message exchange sequence between Source and Sinkto determine the audio/video payloadEstablishes the Session over the layer-2 connectionEstablishes the transport connection over the Displayconnection for content streaming and content protection setupEstablishes a back channel for transmitting control and datainformation related to user interaction with User InterfaceDerives the session keys for Link Content ProtectionPayload transfer startedTermination of the Display sessionConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 144RTSP Based Control Plane• WFD Sink device shall establish a layer 3 connection with a WFD Source devicebefore beginning WFD Session Management• WFD Session Management shall use RTSP over TCP as the communicationprotocol– The use of RTSP to manage WFD sessions requires slightly unconventional approach– However, RTSP protocol permits either side to send SET_PARAMETER messages atany time– Strategy for <strong>Wi</strong>-<strong>Fi</strong> Display is to use SET_PARAMETER to request RTSP client on theWFD Sink to perform control operations requested by the WFD Source• The WFD Control Plane includes nineteen (19) RTSP data structures– All data structures use ABNF (Augmented Backus-Naur Form) syntaxConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 145


RTSP Methods• <strong>Wi</strong>-<strong>Fi</strong> Display devices shall support following RTSP methodsMethods marked “Not Allowed” are supported in WFD but may be supported in other applicationsConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 146WFD Required RTSP Message SequenceId Sender Description RTSP StateM1 WFD Source Query Sink options InitM2 WFD Sink Query Source options InitM3 WFD Source Query Sink capabilities InitM4 WFD Source Set Sink parameters InitM5 WFD Source Trigger WFD Sink to issue SETUP/PLAY/PAUSE/TEARDOWN request. InitM6 WFD Sink Send SETUP request to WFD Source. ReadyM7 WFD Sink Send PLAY request to WFD Source.WFD Source begins audio / video streaming .ReadyM8 WFD Sink Send TEARDOWN request to WFD Source PlayingM9 WFD Sink Send PAUSE request to WFD Source.PlayingWFD Source pauses the audio / video stream(s)M10 WFD Sink Send RTSP SET_PARAMETER with wfd_route to change the Sink atwhich audio is rendered.Applies only when both a primary and a secondary Sinks are in sessionwith a WFD Source.Playing (optional)Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 147


WFD Required RTSP Message SequenceId Sender Description RTSP StateM11 WFD sink Send RTSP SET_PARAMETER with wfd‐connector‐type to indicatechange of active connector type, when the WFD source and the WFDsink support content protection.M12 WFD sourceSend RTSP SET_PARAMETER with wfd‐standby to indicate that theWFD sinksender is entering ‘standby’ mode.M13 WFD sink Send RTSP SET_PARAMETER with wfd‐idr‐request to request IDRrefreshM14 WFD sourceWFD sinkSend RTSP SET_PARAMETER with wfd‐uibc‐capability to select UIBC tobe used.M15 WFD sourceSend RTSP SET_PARAMETER with wfd‐uibc‐setting to enable/disableWFD sinkUIBC.M16 WFD source Send GET_PARAMETER to confirm active RTSP session ReadyPlayingPlaying (optional)Playing (optional)Playing(optional at the Primarysink to send request, andmandatory at the WFDsource to respond)Playing(optional)Playing(optional)Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 148WFD Device Discovery• WFD Device Discovery builds upon the <strong>Wi</strong>-<strong>Fi</strong> P2P Device Discovery mechanism– Follows all procedures as specified for <strong>Wi</strong>-<strong>Fi</strong> P2P Device Discovery• Additional procedures for WFD– WFD Devices shall include an additional WFD information element (WFD IE) in allBeacon, Probe Request, and Probe Response frames– If a WFD Device is operating as a P2P Group Owner in a WFD session and receives aProbe Request frame containing a WFD IE, the WFD device shall respond with a ProbeResponse frame containing its client information– A WFD Device associated with an infrastructure AP and is operating as a <strong>Wi</strong>-<strong>Fi</strong> P2Pdevice should respond to Probe Requests containing a P2P IE, WFD IE and a P2PDirect wildcard SSID with a Probe Response frame that has P2P IE and WFD IEConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 149


WFD Service Discovery (Optional)• WFD Service Discovery builds upon the <strong>Wi</strong>-<strong>Fi</strong> P2P Service Discoverymechanism• Follows all procedures as specified for <strong>Wi</strong>-<strong>Fi</strong> P2P Service Discovery• In addition– Use of Service Discovery Request and Response frames is recommended– A WFD Device that supports Service Discovery must use the Information Subelement –WFD Service Discovery (WSD) capability bit– A WFD device may transmit a WFD Service Discovery frame to a discovered device onlyif the WSD bit is setConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 150WFD Device Selection• Decide on Sink and Source Device– Decide on Primary & Secondary Sinks• Decide on Topology– <strong>Wi</strong>-<strong>Fi</strong> Direct support is mandatory anddefault• P2P Group Owner or a P2P Client canbe a Sink or Source• If primary and secondary Sinks used,the P2P Group Owner shall be the WFDSource<strong>Wi</strong>-<strong>Fi</strong> DirectGroup OwnerWFD Source or Sink<strong>Wi</strong>-<strong>Fi</strong> DirectClientWFD Source or Sink– TDLS support is optionalAccess PointWFD SourceWFD SinkTDLS LinkConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 151


Display Connection Setup• Prior to selecting a network topology all devices are in an existing BSS and canexchange Device and Service discovery information• <strong>Wi</strong>-<strong>Fi</strong> Direct– Follow <strong>Wi</strong>-<strong>Fi</strong> Direct procedures to set up a Group Owner and Client• TDLS (Tunneled Data Link Service)– Follow TDLS procedures to set up a point to point network in an existing BSS – useTDLS Specification IEEE 802.11z• Upon successful establishment of connectivity between WFD devices attemptingto establish a <strong>Wi</strong>-<strong>Fi</strong> Display session, the connected devices establish a TCPconnection– A Control Port is used to establish and manage sessions between the Source and Sink– The protocol running on the Control Port is RTSPConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 152Display Capability Negotiation• Determination of parameters to used for subsequentDisplay session– Audio/video parameters– If using primary and secondary Sinks, the negotiation must beexecuted independently for each Sink• Procedure– M1 : Source sends RTSP Options Request• Determine set of RTSP methods supported by Sink– M2 : Sink responds with RTSP Options Response• Lists RTSP methods supported at the Sink• Includes RTSP OK status code– M3 : Source sends RTSP Get Parameter message• Describes the list of Display capabilities requested– M3 : Sink responds with RTSP Get Parameter response• Response parameter for each supported capability• Unsupported capabilities have no response parameters– M4 : Source determines optimal set of parameters to use forSession and sends RTSP Set Parameter message to initiate– M4 : Sink responds with RTSP status code indicating successConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 153


User Input Back Channel Setup (Optional)• WFD Display supports UIBC (User Interface Back Channel)• User inputs are packetized using a common packet header and transported overTCP/IP• Two categories– Generic• Device agnostic user inputs processed at application level– Mouse up/down, key up/down, touch up/down– Zoom, scroll, rotate– HIDC• Human interface device control– Infrared, USB, Bluetooth, Zigbee, <strong>Wi</strong>-<strong>Fi</strong> interfaces– Keyboard, mouse, single-touch, multi-touch, joystick, camera, gesture, remote controller methodsConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 154Link Content Protection Setup (Optional)• WFD Source shall use an HDCP2.0/2.1 session key with a WFD Sink if enablingContent Protection• The establishment of an HDCP2.0/2.1 session key shall be done prior to startingany RTP session for <strong>Wi</strong>-<strong>Fi</strong> Display streaming– If the HDCP2.0/2.1 session key establishment fails, the devices may still start an RTPsession and transmit unprotected content• AKE 1,2 Locality Check and SKE 1,2 messages shall be transported over adedicated TCP connection– The Sink device shall act as a TCP server for this connection• WFD Sources that transmit protected content to WFD Sink devices shall encryptthe PES 1,2 payload1. High Bandwidth Digital Content Protection System Interface IndependentAdaptation Revision 2.0 October, 2008 (http://www.digital-cp.com/hdcp_technologies)2. Errata – Summary of Errata and Clarifications to the HDCP Interface IndependentAdaptation Specification Rev 2.0 (http://www.digital-cp.com/hdcp_technologies)Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 155


Transport Setup and Establishment of a<strong>Wi</strong>-<strong>Fi</strong> Display Session• Upon successful completion of WFD capabilitynegotiation, a WFD session can be established• Procedure– M5 : Source sends RTSP Set Parameter request with“setup” trigger– M5 : Sink responds with RTSP Set Parameterresponse and result code– M6 : Sink sends RTSP Setup request to establish theport– M6 : Source responds with RTSP Setup response(port information) and result code– M7 : Sink sends RTSP Play request to the Source• Indicates the Sink is ready to receive RTP stream payload– M7 : Source responds with RTSP Play response andresult code• If result code is RTSP OK, the WFD sessionestablishment is successful and the Source beginstransmitting the stream to the appropriate portConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 156Audio/Video Streaming• A/V information generated by a WFD Source shall be packetized using aMPEG2-TS container format and encapsulated by RTP/UDP/IP headers prior to802.11 packetization and transmission to the WFD Sink device(s)– WFD Source shall multiplex the audio and/or video streams into a single MPEG2transport streamConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 157


Payload Control Capabilities• Encoding rate control– For adapting to channel conditions, power consumption optimization, etc.– Methods• Compression ratio change, macro-block skipping– Out of scope for <strong>Wi</strong>-<strong>Fi</strong> Display specification, handled within H.264 standard• Frame skipping– If Sink device supports frame skipping, the Source may encode display frames while skipping someframes from the Sink-advertised frame rate for the current active resolution• Explicit AV format change method– An M4 Request shall be sent from the Source device to the Sink […]– Key restrictions during streaming» Video codec profile and scan method in use shall not be changed» Video resolution and refresh rate shall not be changed simultaneously» Audio format (sampling rate and bit resolution , channels, audio codec) shall not be changedConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 158Display Session Teardown• <strong>Wi</strong>-<strong>Fi</strong> Display Teardown– A source may teardown the WFD session by sending the RTSP M5 TRIGGER-TEARDOWN message– A sink may teardown the WFD session by sending the RTSP M8 TEARDOWNmessage• Using <strong>Wi</strong>-<strong>Fi</strong> Direct transport– The Source or Sink device may perform an orderly termination of the connection usingthe connection tear-down procedure– See <strong>Wi</strong>-<strong>Fi</strong> P2P specification• Using TDLS transport– The Source or Sink device may perform an orderly termination of the connection usingthe connection tear-down procedure– See IEEE P802.11z specificationConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 159


Additional Features of <strong>Wi</strong>-<strong>Fi</strong> Display• Persistent <strong>Wi</strong>-<strong>Fi</strong> Display connections– Using <strong>Wi</strong>-<strong>Fi</strong> Direct transport• Unchanged from <strong>Wi</strong>-<strong>Fi</strong> Direct persistent groups• No additional <strong>Wi</strong>-<strong>Fi</strong> Display specific information is cached in the persistent store• Concurrent WLAN access– Using <strong>Wi</strong>-<strong>Fi</strong> Direct transport• Either the Source or Sink may have concurrent connection(s) with WLAN AP(s)• Such devices shall be certified for concurrent P2P operation– Using TDLS transport• Support for concurrent WLAN traffic is implicit (per 802.11z), because the Source and Sink areassociated with the same APConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 160Questions ???Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 161


今 日 议 程时 间主 题9:30 – 10:15 主 旨 演 讲 : <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> ® —— 无 缝 连 接10:15 – 10:30 协 助 单 位 – 深 圳 电 信 <strong>研</strong> 究 院 发 言10:30 – 11:00 <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> 计 划 路 线 图11:00 – 11:45 计 划 状 态 更 新11:45 – 12:45 午 餐12:45 – 13:30 计 划 聚 焦 :<strong>Wi</strong>-<strong>Fi</strong> CERTIFIED TDLS13:30 – 15:00 计 划 聚 焦 :<strong>Wi</strong>-<strong>Fi</strong> CERTIFIED Miracast15:00 – 15:15 茶 歇15:15 – 16:00 计 划 聚 焦 :VHT 5G16:00 – 17:00 问 答 与 结 语Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 162今 日 议 程时 间主 题9:30 – 10:15 主 旨 演 讲 : <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> ® —— 无 缝 连 接10:15 – 10:30 协 助 单 位 – 深 圳 电 信 <strong>研</strong> 究 院 发 言10:30 – 11:00 <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> 计 划 路 线 图11:00 – 11:45 计 划 状 态 更 新11:45 – 12:45 午 餐12:45 – 13:30 计 划 聚 焦 :<strong>Wi</strong>-<strong>Fi</strong> CERTIFIED TDLS13:30 – 15:00 计 划 聚 焦 :<strong>Wi</strong>-<strong>Fi</strong> CERTIFIED Miracast15:00 – 15:15 茶 歇15:15 – 16:00 计 划 聚 焦 :VHT 5G16:00 – 17:00 问 答 与 结 语Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 163


VHT 5G 计 划 聚 焦Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 164VHT5G Mandatory Certification Features• 5GHz Operation• 20, 40, and 80MHz channels• Spatial Streams supported– Non-Mobile AP (connected to AC power) supports two spatial streams (2 * SS)– Mobile AP (battery operated) supports one spatial stream (1 * SS)• MCS 0-7 (BPSK, r=1/2 through 64-QAM, r=5/6)• VHT A-MPDU delimiter for RX and TX for single MPDU• RX A-MPDU• TX- AMPDU• Clear Channel Assessment (CCA) on Secondary• CTS with BW signaling in response to RTS with BW signalingConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 165


VHT5G Optional But Tested Certification FeaturesIf these features are implement they will be tested during certification.• 2 SS (TX and RX) client• 3 SS (TX and RX) client• 2 SS (TX and RX) AP (for Mobile Access Point)• 3 SS (TX and RX) AP• MCS 8 (256-QAM, r=3/4)• MCS 8-9 (256-QAM, r=3/4 and r=5/6)Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 166VHT5G Optional But Tested Certification FeaturesIf these features are implement they will be tested during certification.• Short Guard Interval (GI)• AP STBC TX 2x1• STA STBC RX 2x1• RX A-MPDU of A-MSDU• RTS with BW signaling• Transmit beamforming (TxBF)• Low Density Parity Check (LDPC) codingConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 167


VHT5G changes to Direct (P2P)• Social Channel– In the P2P technical specification, “Channels 1, 6, and 11 in the 2.4 GHz band shall beused as the Social Channels.” However, VHT5G only provides connectivity in the 5 GHzband.– But VHT5G devices will need to support 2.4 GHz to connect to most existing hot spotsand most of the devices they already own.– Therefore, the proposal is to keep the WFD social channel at 2.4 GHz and VHT5Gproducts desiring WFD certification are required to be dual band.Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 168VHT5G changes to Direct (P2P)• Operating Channel attribute format• In 802.11REVmb the Operating Class, and Channel Number, provide all the informationnecessary to identify the frequency band, channel bandwidth, and the 20 MHz primarychannel. However in 802.11ac Draft 1.4 the Operating Class indicates frequency bandand channel bandwidth, and Channel Number indicates the channel center frequencyindex. The indication of the primary channel is no longer part of the Operating Class.• The P2P technical specification needs to be modified to provide primary channelinformation for VHT5G devices. One possible solution is to state that for VHT5G theChannel Number in the Operating Channel attribute indicates the primary 20 MHzchannel. Group formation would occur with this primary channel with a bandwidthindicated by the Operating class. All additional information would be conveyed in theinformation elements in the beacon in the primary channel.Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 169


VHT5G Changes and Enhancements to 11n• Changes• Add 11ac devices to existing 11n test bed configurations• Enhancements• Channel width requirements• Mandatory 80MHz for VHT5G• Backward compatible with 11n for 20/40MHz• 256QAM optional in VHT5G• Currently up to 3 spatial streams to be supported in VHT5GConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 170Technically - what is VHT5G• Very High Throughput in 5GHz (VHT5G) is the <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong>®certification program for enabling gigabit throughput in the 5GHz band.• The IEEE 802.11 standard has continued to evolve over the yearsbringing higher data rates and a myriad use cases• .11a/g introduced OFDM to achieve 54Mbps• .11n introduced the concept of MIMO which allows independent spatialstreams• This presentation starts by tracking the evolution and then concentrateson the details of 802.11ac (current version of IEEE draft is 3.0)Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 171


802.11 Evolution• The IEEE 802.11 standard has continued to evolve over the years bringing higherand higher data rates, multiple data streams, and a myriad use cases802.11 802.11b 802.11a 802.11g 802.11n 802.11ac VHT5G 802.11adModulationDSSSDSSS/CCKOFDM OFDM OFDM OFDM OFDMSingleCarrier/OFDMAccessTechnologySinglestreamSinglestreamSinglestreamSinglestreamMIMO,multiplestreamsDL MU-MIMO,multiplesimultaneousstreamsMIMO, multiplestreamsSingle stream,BeamformingData Rate(Mbps)1, 2 Up to 11Up to54Up to54Up to600Up to 16933Up to 11.3GbpsUp to 2 6756FrequencyBand (GHz)2.4 2.4 5 2.42.4 and55 5 60Channelb/w(MHz)22 22 20 2220 and4020, 40, 80, 160 20,40,80 2160• [1] Total aggregated data rate for multiple simultaneous STA’s• [2] Data rate to a single STAConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 172802.11n PHY Features - Mandatory vs. Optional<strong>Fi</strong>gure adapted from [3]Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 173


Evolution of 11n VHT5G• 5GHz operation only– Backward compatibility with legacy 802.11 in 5GHz• Increased aggregate size limits– MPDU size of (2^20)-1• Enhancement to coexistence mechanisms• <strong>Wi</strong>der channel bandwidth– +2x Greater throughput– 80 MHz channel widths (vs. 40 MHz max in 802.11n and 20MHz in 802.11a)Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 174Evolution of 11n VHT5G• Unified Beam forming– Greatly helping link reliability and smoothing out dead spots– <strong>Fi</strong>rst WFA program to test/certify this technique– Only Explicit feedback, no implicit feedback– Only Compressed-V feedback, no Uncompressed-V, no CSI– Only NDP sounding, no staggered sounding• No unequal modulation• Modulation– 33% data rate increase– 256-QAM, rate 3/4 and 5/6, added as optional modes (vs. 64-QAM, rate 5/6 maximumin 802.11n)Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 175


Evolution of 11n VHT5G• STBC– only for 2x1• LDPC– Added block-interleaving of constellation symbols per stream, per OFDM symbol• Other elements/features– MAC modifications (mostly to support above changes)– Coexistence mechanisms for 20/40/80/160 MHz channels, 11ac and 11a/n devices• 160 MHz channels are not part of VHT5G scopeConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 176802.11ac PHY Features – Stage 1 Mandatory vs. Optionalfeatures.<strong>Fi</strong>gure adapted from [3]Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 177


Subcarriers and Channel b/w• 20 MHz channel uses 64pt FFT as per 11a but adds 4 more carriers• Higher b/w channels use larger FFT’s– Subcarriers shown below• Certain groups of subcarriers are rotated to reduce PAPRBandwidth(MHz)FFT size Active subcarriers Comment20 64 -28 to -1, 1 to 28 Same as 11a & 11n40 128 -58 to -2, 2 to 58 Same as 11n80 256 -122 to -2, 2 to 122Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 178Channelization for 20/40/80 MHz• 40/80 MHz channelization– Consists of two adjacent IEEE 20/40 MHz channels– Non-overlapping channelizationConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 179


VHT5G Frame Format• L-STF: Short Training <strong>Fi</strong>eld used for initial sync• L-LTF: Long Training <strong>Fi</strong>eld used for channel estimation and fine sync• L-SIG: Signal used to indicate the length of the packet• VHT5G-SIG-A: Two symbols containing info, MCS, b/w, etc.• VHT5G-STF: used to improve AGC for MIMO• VHT5G-LTF: 1 or more in relation to the number of spatial streams• VHT5G-SIG-B: length of useful data and MCS for MU-MIMOConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 180Questions ???Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 181


今 日 议 程时 间主 题9:30 – 10:15 主 旨 演 讲 : <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> ® —— 无 缝 连 接10:15 – 10:30 协 助 单 位 – 深 圳 电 信 <strong>研</strong> 究 院 发 言10:30 – 11:00 <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> 计 划 路 线 图11:00 – 11:45 计 划 状 态 更 新11:45 – 12:45 午 餐12:45 – 13:30 计 划 聚 焦 :<strong>Wi</strong>-<strong>Fi</strong> CERTIFIED TDLS13:30 – 15:00 计 划 聚 焦 :<strong>Wi</strong>-<strong>Fi</strong> CERTIFIED Miracast15:00 – 15:15 茶 歇15:15 – 16:00 计 划 聚 焦 :VHT 5G16:00 – 17:00 问 答 与 结 语Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 182Join the <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong>: Membership ROI• Regular (& Affiliate) <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> membership brings…– Product certification (better products that users want)– Marketing resources, access to top brands– Regulatory influence– Opportunities to network... and has great Return on Investment at $15,000/year– Insights into the future of the <strong>Wi</strong>-<strong>Fi</strong> industry• Adopter membership– For companies that want the insight, networking and marketing opportunities, but don’thave a need to certify products or participate in industry-shaping task groups… only$5,000/year• See http://www.wi-fi.org/become_a_member_overview.phpConfidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 183


Members: Please get involved!• Marketing task groups: define & document market requirements• Technical task groups: develop test plans according to the marketrequirements documents• Regulatory task groups: work with regulatory and policy bodies toaddress needs• Please get involved and contribute your knowledge andexperience!Confidential | © <strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong><strong>Wi</strong>-<strong>Fi</strong> <strong>Alliance</strong> Member Symposium 184

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