Radio Resource Allocation in Spatial TDMA Multihop Networks with Advanced Antennas
Marvin Sánchez Garache, Bo Hagerman, Jens Zander · 2007
Abstract—Advanced Antenna Systems (AAS) have the potential of significantly improving the performance in Wireless Multihop Networks. Critical for achieving performance gains is the proper design of radio resource management (RRM) schemes. In this paper RRM for networks utilizing Beam-Steering Circular Arrays in combination with Spatial Time Division Multiple Access is studied. A heuristic, low complexity, RRM scheme based on the algorithm in [1] is proposed. Its network throughput performance is compared to the (near) optimum performance of the convex optimization method proposed in [2] extended to be utilized with AAS. Both a constant transmission power scheme as well as SINR balancing power control are studied for various antenna beamwidths. The proposed AAS scheme is shown to improve the throughput performance significantly (up to 5 times in our experiments) compared to systems with omnidirectional antennas. Our heuristic scheme exhibits a throughput performance that in most cases lies within 10-15 % of the one obtained by the convex optimization method. I.