Temporal Fairness Enhanced Scheduling for Cooperative Relaying Networks in Low Mobility Fading Environments


Ingmar Hammerström, Jian Zhao, and Armin Wittneben


6th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2005, New York, June 2005.

DOI: 10.1109/SPAWC.2005.1506080

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We consider a wireless network, which consists of several active source/destination pairs and a number of idle nodes. Multiple idle nodes volunteer as relays to facilitate the communication. All nodes have low mobility and the fading channel is essentially constant over the latency time scale of interest (block fading). Conventional adaptive scheduling techniques are either unfair or inefficient in this context. In a previous paper we proposed a scheduling scheme which does not compromise the quality of service of individual source/destination links (fairness) if the number of relay nodes is sufficiently high. In this paper we propose a simple extension to our scheduling scheme which guarantees short-term temporal fairness among the individual links in the network, while achieving considerable multi-user diversity gains.


relaying, cooperative diversity, opportunistic scheduling, fairness

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