Basic client relay model for wireless cellular networks

The paper considers cellular networks, where clients may cooperate to relay packets for each other. Client relay technology is a cross-layer channel-aware technique that may dramatically improve throughput, energy efficiency, and delay performance of modern and future wireless networks, such as IEEE 802.16m and LTE-Advanced. The proposed basic system model is the simplest client relay scenario under realistic assumptions. We obtain an accurate closed-form estimation on mean packet delay for all the source nodes within this model and verify the results by means of simulation.