Chapter 6 Wireless and Mobile Networks - Network and Systems Lab

More documents

Recommendations

Info

802.11: advanced capabilities Rate Adaptation base station, mobile dynamically change transmission rate (physical layer modulation technique) as mobile moves, SNR varies QAM256 (8 Mbps) QAM16 (4 Mbps) BPSK (1 Mbps) operating point BER 10 -1 10 -2 10 -3 10 -4 10 -5 10 -6 10 -7 10 20 30 40 SNR(dB) 1. SNR decreases, BER increase as node moves away from base station 2. When BER becomes too high, switch to lower transmission rate but with lower BER 6: Wireless and Mobile Networks 6-30
802.11: advanced capabilities Power Management node-to-AP: “I am going to sleep until next beacon frame” AP knows not to transmit frames to this node node wakes up before next beacon frame beacon frame: contains list of mobiles with APto-mobile frames waiting to be sent node will stay awake if AP-to-mobile frames to be sent; otherwise sleep again until next beacon frame 6: Wireless and Mobile Networks 6-31
Page 1 and 2: Chapter 6 Wireless and Mobile Netwo
Page 3 and 4: Chapter 6 outline 6.1 Introduction
Page 5 and 6: Elements of a wireless network netw
Page 7 and 8: Characteristics of selected wireles
Page 9 and 10: Elements of a wireless network Ad h
Page 11 and 12: Wireless Link Characteristics Diffe
Page 13 and 14: Wireless network characteristics Mu
Page 15 and 16: CDMA Encode/Decode sender data bits
Page 19 and 20: 802.11 LAN architecture BSS 1 AP In
Page 21 and 22: 802.11: passive/active scanning BBS
Page 23 and 24: IEEE 802.11 MAC Protocol: CSMA/CA 8
Page 25 and 26: Collision Avoidance: RTS-CTS exchan
Page 27 and 28: 802.11 frame: addressing H1 R1 rout
Page 29: 802.11: mobility within same subnet
Page 33 and 34: 802.16: WiMAX like 802.11 & cellul
Page 37 and 38: Cellular networks: the first hop Tw
Page 39 and 40: Cellular standards: brief survey 2.
Page 43 and 44: Mobility: Vocabulary home network:
Page 45 and 46: How do you contact a mobile friend:
Page 47 and 48: Mobility: approaches Let routing h
Page 49 and 50: Mobility via Indirect Routing home
Page 51 and 52: Indirect Routing: moving between ne
Page 53 and 54: Mobility via Direct Routing: commen
Page 57 and 58: Mobile IP: indirect routing foreign
Page 59 and 60: Mobile IP: registration example hom
Page 61 and 62: Handling mobility in cellular netwo
Page 63 and 64: GSM: handoff with common MSC Hando
Page 65 and 66: GSM: handoff between MSCs home netw
Page 67 and 68: GSM: handoff between MSCs home netw
Page 69 and 70: Wireless, mobility: impact on highe

Chapter 6 Wireless and Mobile Networks - Network and Systems Lab

Create successful ePaper yourself

Delete template?

Save as template?