In this work, we study the benefit of partial relay cooperation. We considera two-node system consisting of one source and one relay node transmittinginformation to a common destination. The source and the relay have externaltraffic and in addition, the relay is equipped with a flow controller toregulate the incoming traffic from the source node. The cooperation isperformed at the network level. A collision channel with erasures isconsidered. We provide an exact characterization of the stability region of thesystem and we also prove that the system with partial cooperation is alwaysbetter or at least equal to the system without the flow controller.
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