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Communication Dans Un Congrès Année : 2010

Optimal Cooperative MAC Protocol with Efficient Selection of Relay Terminals

Résumé

A new cooperative protocol is proposed in the context of wireless mesh networks. The protocol implements ondemand cooperation, i.e. cooperation between a source terminal and a destination terminal is activated only when needed. In that case, only the best relay among a set of available terminals is re-transmitting the source message to the destination terminal. This typical approach is improved using three additional features. First, a splitting algorithm is implemented to select the best relay. This ensures a fast selection process. Moreover, the duration of the selection process is now completely characterized. Second, only terminals that improve the outage probability of the direct link are allowed to participate to the relay selection. By this means, inefficient cooperation is now avoided. Finally, the destination terminal discards the source message when it fails to decode it. This saves processing time since the destination terminal does not need to combine the replicas of the source message: the one from the source terminal and the one from the best relay. We prove that the proposed protocol achieves an optimal performance in terms of Diversity-Multiplexing Tradeoff (DMT).
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Dates et versions

hal-04026837 , version 1 (13-03-2023)

Identifiants

Citer

Benoît Escrig. Optimal Cooperative MAC Protocol with Efficient Selection of Relay Terminals. Mesh Tech 2010 @ 7th IEEE International Conference on Mobile Ad-hoc and Sensor Systems (IEEE MASS 2010), Nov 2010, San Francisco, United States. pp.576-581, ⟨10.1109/MASS.2010.5663888⟩. ⟨hal-04026837⟩
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