Dynamic spatial backoff in fading environments

Zhongning Chen, Xue Yang, Nitin H Vaidya

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We present a dynamic spatial backoff method to resolve channel contention in wireless ad-hoc networks. We argue that each node should adjust its receiver sensitivity level according to the mean channel gain of its particular transmitter-receiver link, in order to see the full benefit of spatial backoff and improve the throughput. We designed a distributed algorithm that adjusts each transmitters carrier sense threshold and transmission rate dynamically based on local information and limited receiver feedback, for wireless channels that have small-scale multipath fading. We evaluated the algorithm using different topologies, under various fading conditions. Results show that our algorithm is able to achieve aggregate throughput near or better than the maximum achievable by the static scheme, without a priori knowledge of the network topology or fading condition.

Original languageEnglish (US)
Title of host publication2008 5th IEEE International Conference on Mobile Ad-Hoc and Sensor Systems, MASS 2008
Pages255-264
Number of pages10
DOIs
StatePublished - Dec 1 2008
Event2008 5th IEEE International Conference on Mobile Ad-Hoc and Sensor Systems, MASS 2008 - Atlanta, GA, United States
Duration: Sep 29 2008Oct 2 2008

Publication series

Name2008 5th IEEE International Conference on Mobile Ad-Hoc and Sensor Systems, MASS 2008

Other

Other2008 5th IEEE International Conference on Mobile Ad-Hoc and Sensor Systems, MASS 2008
Country/TerritoryUnited States
CityAtlanta, GA
Period9/29/0810/2/08

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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