Upstream/downstream unfairness issue of TCP over wireless LANs with per-flow queueing

Author

Wu, Yi ; Niu, Zhisheng ; Zhu, Janfeng

Author_Institution

Dept. of Electron. Eng., Tsinghua Univ., Beijing, China

Volume

5

fYear

2005

Firstpage

3543

Abstract

Fairness is an important issue in wireless LAN due to their shared media nature. Essentially, IEEE 802.11 MAC protocols have been designed to provide fair access for all the competing mobile hosts. However, the fairness at MAC layer can not be maintained at TCP layer in the presence of both mobile senders and receivers accessing to the wired networks. In this paper we investigate the TCP upstream/downstream unfairness issue over the 802.11 wireless LAN with per-flow queueing employed at the access point. The interactions between 802.11 MAC protocol and TCP are evaluated through analysis and simulation. Based on the derived analytical model, an efficient solution is proposed to be implemented at the access point for fairness achievement.

Keywords

IEEE standards; access protocols; bandwidth allocation; queueing theory; telecommunication traffic; transport protocols; wireless LAN; IEEE 802.11; MAC protocols; TCP; access point; fairness; mobile hosts; per-flow queueing; upstream/downstream unfairness; wireless LAN; Access protocols; Analytical models; Channel allocation; Digital communication; Downlink; Internet; Local area networks; Maintenance engineering; Media Access Protocol; Wireless LAN;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2005. ICC 2005. 2005 IEEE International Conference on

Print_ISBN

0-7803-8938-7

Type

conf

DOI

10.1109/ICC.2005.1495078

Filename

1495078