Joint scheduling and power control for inter-hop interference mitigation in wireless multihop networks

In wireless multihop network, the inter-hop interference (IHI) is a major factor to deteriorate the end-to-end performances of multihop link. In this paper, we proposed a joint radio resource management with respect to scheduling and power control in order to mitigate the IHI and maximize the resource utilization and the end-to-end rate in the wireless multihop networks. The scheduling algorithm decides the number of orthogonal resources and the transmission time period for simultaneously transmitting links considering the IHI. Moreover, the transmit power control (TPC) algorithm protects the quality of multihop transmission from the collision and severe IHI and optimizes the transmit power and the allocated transmission time jointly. Simulation results show that the proposed schemes using the scheduling and TPC increase the end-to-end rate of multihop link up to 3 times and significantly decrease the total energy consumption of participating nodes, compared to the conventional fixed resource allocation method without TPC.