Collision-Free Operation in Wireless Ad-Hoc Networks
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- 作者：Jaume Barcelo (1) jbarcelo@it.uc3m.es
Boris Bellalta (2) boris.bellalta@upf.edu
Miquel Oliver (2) miquel.oliver@upf.edu
Albert Banchs (1) banchs@it.uc3m.es - 关键词：Medium access control – ; wireless ad ; hoc networks – ; collision ; free operation
- 刊名：Lecture Notes in Computer Science
- 出版时间：2011
- 出版年：2011
- 期刊代码：99_0302-9743
- 类别：cp
- 卷：6886
- 期：1
- 页码：51-62
- 数据来源：sp
摘要
In some wireless ad-hoc networks it is not possible to rely on carrier-sense mechanisms to prevent collisions. In this article we suggest a MAC protocol that reaches collision-free operation in sparse ad-hoc wireless networks when all the stations are saturated. The basic idea is to use a random backoff after failed transmissions and a deterministic backoff after successful transmissions. Each of the participating stations can configure its own backoff parameter after collecting information from its neighborhood. Then the system enters in a transient state until collision-free operation is reached. We assess the duration of the transient state and other performance metrics for an example scenario and finally we discuss two options to incorporate reception acknowledgements.