Cooperative multicast resource allocation strategy

In this paper we propose a new cooperative video multicast strategy, the so called Coordinated Multiple Relays (CoMR). The strategy is based on an efficient one-to-many resource sharing technique which exploits the space diversity of the two hop topology. The proposed scheme ensures a) significant gain in terms of coverage provided by relay deployment, b) boosted Signal to Interference and Noise Ratios (SINRs) at the second phase of the two hop transmission due to the positive superposition of synchronous transmissions, and c) the flexibility to switch to non-cooperative mode whenever cooperation is no longer beneficial. The new scheme showed considerable enhancement of both system throughput and user fairness and noticeable improvement in terms of energy efficiency compared to the non-cooperative multicast scheme.