IEEE 802.11 is proposed to support delivery of radio data packets in WLA1V(Wireless LAN).The basis of 802.11 MAC(Medium Access Control) is DCF(Distributed Control Function).This paper proposes DCF+ to improve the perfonnarrce of TCP (Transport Control Protocol) over WLAN. To analyze the performance of DCF and DCF+,this paper also introduces au analytical model to compute the saturated throughput of WLAN.DCF+ is shown to be able to improve the performance of TCP over WLAN both by modeling and simulations.
Key words
TCP /
DCF /
performance analysis
{{custom_keyword}} /
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
References
[1] IEEE standard for Wireless LAN Medium Access Control and Physical Layer (PHY) specifications[S].ISO/IEC 8802-11:1999(E),1999.
[2] B P Crow,J G Kim.IEEE 802.11 wireless local area networks[J].IEEE Communications magazine,1997,35(9):116-126.
[3] H S Chhaya,S Gupta.Performance modeling of asynchronous data transfer methods of IEEE 802.11 MAC protocol[J].Wireless Networks,1997,5(3):217-234.
[4] F Cali,M Conti,E Gregori.Dynamic tuning of the IEEE 802.11 protocol to achieve a theoretical throughput limit[J].IEEE/ACM Trans.On Networking,2000,8(6):785-799.
[5] G Bianchi.IEEE 802.11 saturation throughput analysis[J].IEEE Comm.Letters,1998,2(12):318-320.
[6] G Bianchi.Performance analysis of the IEEE 802.11 distributed coordination function[J].IEEE Journal on Selected Area in Comm.2000,18(3):535-574.
[7] Haitao Wu,Yong Peng,Keping Long,Shiduan Cheng,Jian Ma.Performance of reliable transport protocol over IEEE 802.11 wireless LAN:Analysis and enhancement[A].Proc.IEEE INFOCOM'02[C].New York,2002.
[8] M Gerla,R Bagrodia,L Zhang,K Tan,L Wang.TCP over wireless multi-hop protocols:simulation and experiments[A].ICC'99[C].1999.1089-1094.
[9] G Xylomenos,G C Polyzos.Link layer support for quality of service on wireless internet links[J].IEEE Personal Communications,1999,6(5):52-60.
[10] R Jain.The Art of Computer Systems Performance Analysis[M].John Wiley and Sons,1991.
{{custom_fnGroup.title_en}}
Footnotes
{{custom_fn.content}}
PDF(701 KB)
