Multichannel Wormhole Switching vs. CSMA/CA for Wireless Mesh Networking

Author

McTasney, Robert ; Grunwald, Dirk ; Sicker, Douglas

Author_Institution

Univ. of Colorado at Boulder, Boulder

fYear

2008

fDate

March 31 2008-April 3 2008

Firstpage

2105

Lastpage

2110

Abstract

This paper presents a method for improving the performance of Wireless Mesh Networks (WMN) through the use of multichannel wormhole switching. Current WMNs based on contention-based medium access control (MAC) such as ";WiFi"; suffer from high latency and low resource utilization because of competition for the shared single-channel medium. Through simulation we compare WMNs using contention-based wireless nodes versus WMNs using contention-free ";flit-relay"; wireless nodes. We demonstrate our ";flit-relay"; design as a promising low latency alternative to CSMA/CA for providing WMNs. The approximate 800-fold improvement in latency over WMNs using wireless nodes with a contention-based MAC and competitive setup times for VoIP support the argument for more development on pursuing this technology.

Keywords

Internet telephony; access protocols; carrier sense multiple access; radio networks; telecommunication switching; CSMA; MAC; VoIP; WMN; carrier sense multiple access; medium access control; multichannel wormhole switching; wireless mesh networking; Bandwidth; Delay; Interference; Media Access Protocol; Multiaccess communication; Optical fiber networks; Peer to peer computing; Physical layer; Throughput; Wireless mesh networks;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Networking Conference, 2008. WCNC 2008. IEEE

Conference_Location

Las Vegas, NV

ISSN

1525-3511

Print_ISBN

978-1-4244-1997-5

Type

conf

DOI

10.1109/WCNC.2008.373

Filename

4489404