Performance evaluations for hybrid IEEE 802.11b and 802.11g wireless networks

Shao Cheng Wang*, Yi Ming Chen, Tsern-Huei Lee, Ahmed Helmy

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review

17 Scopus citations

Abstract

The IEEE 802.11g standard has been proposed to enhance the data rate of wireless LAN connections up to 54Mbps, while ensuring backward compatibility with legacy 802.11b devices at the same time. However, in a hybrid 802.11b/g network, the throughput of 802.11g devices is compromised because of not only the overhead to interoperate with 802.11b devices, but also the unbalanced medium contentions between devices with different versions of the standard. We propose a hybrid Markov-chain based model to quantify this throughput reduction effect in 802.11b/g mixed scenarios. The analytical model is further verified with simulations and field measurements under different station numbers, data rates, and data packet sizes. In addition, a simple frame-bursting technique is shown to balance the throughput between 802.11b and 802.11g stations.

Original languageEnglish
Pages111-118
Number of pages8
DOIs
StatePublished - 12 Dec 2005
Event24th IEEE International Performance, Computing, and Communications Conference, IPCCC 2005 - Phoenix, AZ, United States
Duration: 7 Apr 20059 Apr 2005

Conference

Conference24th IEEE International Performance, Computing, and Communications Conference, IPCCC 2005
CountryUnited States
CityPhoenix, AZ
Period7/04/059/04/05

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