A comparison of wi-fi and wimax with case studies - Florida State ...

More documents

Recommendations

Info

There aare varies of parameterrs. [50] The e SFID is isssued and mmapped to CCIDs by the e BS. Theree are fouur types of scheduling g services ffor providinng the best performannce of data transfer off various applicationns. [50] Tabble 4-4[50][ 108] – [1122] UGGS is designned to suppoort real-timee fixed-sizee packets peeriodic transsmission at constant bitt rate (CBBR), for exaample T1. Thi is scheme iss designed tto support rreal-time unnfixed-size ppackets perriodic transmmission. Ann example is MPEG video. Thiss service allows BS to provide unnicast pollinng opportun nities for thee MS to rrequest banddwidth. Unsolicitedd grant servi ices (UGS) Real-time ppolling services (rtPS) Non-real-timme polling service (nrttPS) Table 4-4 Service Floows in WiMMax Thi is one suppoorts delay-ttolerant dataa streams wwith unfixed-size packetts, like FTP P. The nrtPSS and rtPPs are similar. The diffference is tthat a MS can use coontention-baased polling g or unicastt polling opportunitiies in the upplink to requuest bandwiidth in nrtPSS service. 48
Best-effort service (BE) This scheme is used only for service that does not require strict QoS, such as web browsing. The MS uses merely contention-based polling opportunities to request bandwidth and sends data whenever channels are available. 4.3.1.2.4. Security 4.3.1.2.4.1. Overview The security of IEEE 802.16 is called the privacy sublayer at the bottom of the MAC layer. It is mainly used to provide access control and confidentiality of the data link. The configuration of the IEEE 802.16 security has five components and will be introduced in the following. [50][52][115] – [119] Security Associations (SA) This component is mainly concerned about connection. IEEE 802.16 has two types of SA; data SA and authorization SA. Only data SA has a clear definition. The data SA is used to protect transmit connections between SS (Subscriber Station) and BS (Base Station). The authorization SA is a state which is shared between two particular SS and BS. The BS uses authorization SAs to configure data SAs on the SS.[52] For securing a transmit connection, a SS first uses a “create-connection” request to initiate a data SA. The standard will let several connection IPs share a SA to support multicast. On network entry, the standard automatically establishes a SA for the secondary management channel. Thus, a SS may have two or three SAs, one for the secondary management channel, others for uplink and downlink connections. Each multicast group requires a SA to share with group members. X.509 certificate profile This is used to identify communication parities and 802.16 does not define its extensions. This standard defines two types: manufacturer certificates and SS certificates. There are no certificates of BS. A manufacturer certificate is used to identify the manufacturer of an IEEE 802.16 device. It can be self-signed or issued by a third party. An SS certificate can identify a particular SS and also its MAC address. The SS certificates are created and signed by manufacturers. The BS uses the manufacturer certificate’s public key to confirm the SS certificate and also verify the device. The SS must take care of the private key corresponding to its public key to prevent intrusion from attackers. 49
Page 1 and 2:
THE FLORIDA STATE UNIVERSITY COLLEG
Page 3 and 4:
TABLE OF CONTENTS List of Tables…
Page 5 and 6:
5. Case study…………………
Page 7 and 8:
LIST OF FIGURES Figure 2-1 The Evol
Page 9 and 10: LIST OF ABBREVIATIONS Abbreviation
Page 11 and 12: PSS Portable Subscriber Station 89
Page 13 and 14: CHAPTER ONE 1. Introduction The cel
Page 15 and 16: Table 1-1 Cont. 802.3an 2006 10GBAS
Page 17 and 18: 2.1. Introduction CHAPTER TWO 2. 3G
Page 19 and 20: 2.3. Development 3G has been in dev
Page 21 and 22: 2.5. Conclusion WAP (Wireless Appli
Page 23 and 24: IEEE 802.11n is the newest standard
Page 25 and 26: Table 3-3 Cont. 10 2.457 X Y Y Y Y
Page 27 and 28: 3.3.1.2. PLCP and PMD The physical
Page 29 and 30: Noise Codes). The most powerful con
Page 31 and 32: Figure 3-5 CCK Modulation HR-DSSS P
Page 33 and 34: other problem is inter-carrier inte
Page 35 and 36: Tab ble 3-5 OFDDM Modulaation and D
Page 37 and 38: and contains DSSS, CCK, PBCC (Packe
Page 39 and 40: 3.3.2. MAC Layer 3.3.2.1. Introduct
Page 41 and 42: Virtual channel sensing he other me
Page 43 and 44: SIFS (Short InterFrame Spacing) Fig
Page 45 and 46: Figure 3-20 WEP Frame and Operation
Page 47 and 48: 3.4.2. MIMO (Multiple-Input/Multipl
Page 49 and 50: 4.1. The background of IEEE 802.16
Page 51 and 52: The working groups of WiMax Forum a
Page 53 and 54: Table 4-1 Thee Basic Datta of IEEE
Page 55 and 56: Figure 4-1 The Layer Structure of I
Page 57 and 58: codes ( (CTC) and low densityy pari
Page 59: 4.3.1.2.2. AAS (Advanced Antenna Sy
Page 63 and 64: Encryption Figure 4-4 PKM Protocol
Page 65 and 66: 4.3.2. IEEE 802.16e-2005, the newes
Page 67 and 68: transmiission, the aadjacent cellls
Page 69 and 70: the uplink bandwidth periodically f
Page 71 and 72: Figure 4-7 Coverage and Capacity fo
Page 73 and 74: CHAPTER FIVE 5. Case study This cha
Page 75 and 76: increased bandwidth, fixed connecti
Page 77 and 78: Figure 5-3 Landis Green Figure 5-4
Page 79 and 80: Table 5-2 Xirrus XS-3700 AP Technol
Page 81 and 82: • Automatic Tx power selection
Page 83 and 84: Table 5-4 Cont. 71
Page 85 and 86: 5.1.3. Analysis The FSU wireless ne
Page 87 and 88: since the January 2006. The populat
Page 89 and 90: Table 5-5 Parameters of WLAN and Me
Page 91 and 92: Table 5-6 Features of Nortel Wirele
Page 93 and 94: • -101 dBm typical @ 1 Mbps Recei
Page 95 and 96: Operating environment specification
Page 97 and 98: uilding density, high population de
Page 99 and 100: epeater r is developping and it wil
Page 101 and 102: Figure 5-17 WiBro Features The data
Page 103 and 104: Figure 5-19 U-RAS Premium Figure 5-
Page 105 and 106: In KT’s recent report, 60% of sub
Page 107 and 108: Figure 5-21 An Example Application
Page 109 and 110: Name Parameters Standard Table 5-10
Page 111 and 112:
WiFly used Wi-Fi to cover 60% of th
Page 113 and 114:
BIBLIOGRAPHY [01]. IEEE 802.11 offi
Page 115 and 116:
[37]. Sun, Y.; "Bandwidth-efficient
Page 117 and 118:
[88]. Mineno T.; Babji T.,"Issues a
Page 119 and 120:
[117]. Yun Z.; Yuguang F., "Securit
Page 121 and 122:
Network Operations and Management S
show all

A comparison of wi-fi and wimax with case studies - Florida State ...

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?