A new access algorithm for PCF modes in wireless LANs

Author

Liao, Shengbin ; Cheng, Wenqing

Author_Institution

Eng. & Res. Center for Inf. Technol., Huazhong Normal Univ., Wuhan, China

fYear

2009

fDate

13-15 Nov. 2009

Firstpage

1

Lastpage

4

Abstract

In this paper, a new point coordination function (PCF) scheme, NPCF is presented, which is based on CSMA/CA with equal backoff window in all stations rather than polling mechanism, it can decrease delay and improve throughput, and is also different with distributed coordination function (DCF). NPCF is motivated by the following ideas: in the access method of PCF, a point coordinator (PC) performing the role of the polling master knows some information of the network, such as the number of active stations, the performance of NPCF based on CSMA/CA is better than PCF based on polling by using these information. Analysis and simulation results validate our conclusion.

Keywords

carrier sense multiple access; wireless LAN; CSMA-CA; PCF modes; access algorithm; carrier sense multiple access; distributed coordination function; local area networks; new point coordination function scheme; polling master; polling mechanism; wireless LAN; Analytical models; Constraint optimization; Delay; Downlink; Information technology; Multiaccess communication; Performance analysis; Resource management; Throughput; Wireless LAN;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications & Signal Processing, 2009. WCSP 2009. International Conference on

Conference_Location

Nanjing

Print_ISBN

978-1-4244-4856-2

Electronic_ISBN

978-1-4244-5668-0

Type

conf

DOI

10.1109/WCSP.2009.5371620

Filename

5371620