Goodput optimization in CSMA/CA wireless networks

Author

Chang, Yusun ; Lee, Christopher P. ; Copeland, John A.

Author_Institution

Communications System Center, Georgia Institute of Technology, Atlanta, 30332, USA

fYear

2007

fDate

10-14 Sept. 2007

Firstpage

880

Lastpage

888

Abstract

Packet based wireless networks have provided high data rates, and the desire for ubiquitous wireless computing is growing rapidly. To accommodate these demands, wireless systems should work well in typical wireless environments. The most widely deployed WLAN technology, IEEE 802.11, uses the unlicensed ISM band, which is vulnerable to noise generated by electronic devices. This paper proposes a way to enhance system goodput in CSMA/CA MAC protocols using fragmentation. Our analytical model considers the number of contending stations, packet collisions, packet error probabilities, and fragmentation overheads. With extensive experiments in WLAN and ad hoc networks, we show the optimization improves the goodput approximately 18% in a typical WLAN and 48% in ad hoc networks. The proposed approach can be implemented to any CSMA/CA MAC protocol without modifying the standard.

Keywords

Ad hoc networks; Computer networks; Media Access Protocol; Multiaccess communication; Noise generators; Pervasive computing; Ubiquitous computing; Wireless LAN; Wireless networks; Working environment noise; Ad hoc; CSMA/CA; Fragmentation; Goodput; WLAN;

fLanguage

English

Publisher

ieee

Conference_Titel

Broadband Communications, Networks and Systems, 2007. BROADNETS 2007. Fourth International Conference on

Conference_Location

Raleigh, NC, USA

Print_ISBN

978-1-4244-1432-1

Electronic_ISBN

978-1-4244-1433-8

Type

conf

DOI

10.1109/BROADNETS.2007.4550527

Filename

4550527