Medium access cooperations for improving VoIP capacity over hybrid 802.16/802.11 cognitive radio networks

Deyun Gao, Jianfei Cai, Chuan Heng Foh

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Abstract

There are some existing works that study the coexistence of 802.16 and 802.11 networks. However, not many of them consider the resource allocation issues in the case of delivering traffic between mobile stations and Internet users through an access point (AP) and a base station (BS) which operate at the same frequency band. In this paper, we design a cooperation mechanism for 802.16 and 802.11 to share the same medium with adaptable resource allocation. The adaptiveness in resource allocation in our design eliminates the potential inefficiency from the cooperation due to bandwidth bottleneck. Targeting VoIP applications, we propose a simple approach for the adaptation that optimizes the resource allocation not only between the IEEE 802.11 AP and the stations but also between the IEEE 802.16 BS and the IEEE 802.11 AP. Numerical results show significant improvement in voice capacity.

Original languageEnglish
Title of host publicationNETWORKING 2008
Subtitle of host publicationAdHoc and Sensor Networks, Wireless Networks, Next Generation Internet - 7th International IFIP-TC6 Networking Conference, Proceedings
PublisherSpringer
Pages889-900
Number of pages12
ISBN (Print)3540795480, 9783540795483
DOIs
Publication statusPublished - 2008
Externally publishedYes
Event7th International IFIP-TC6 Networking Conference - NETWORKING 2008: AdHoc and Sensor Networks, Wireless Networks, Next Generation Internet - , Singapore
Duration: 5 May 20085 Sep 2008

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume4982 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Conference

Conference7th International IFIP-TC6 Networking Conference - NETWORKING 2008: AdHoc and Sensor Networks, Wireless Networks, Next Generation Internet
CountrySingapore
Period5/05/085/09/08

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