关键词: 信道频谱分配, 链路调度, 可变频宽, 无线网络

Abstract:

Taking account of the impacts of channel-width on the transmission range and interinterference of links, the existing cumulative interference model is improved and the channel allocation and link scheduling problem in variable channel-width wireless networks is analyzed. A twolayer algorithm is proposed to decouple the channel allocation and link scheduling in the problem and a heuristic approach considering the links-traffic satisfactions is devised to obtain the links priorities and construct the channel allocation matrices for concurrent transmissions. Simulation results show that the proposed algorithm can get convergence in reasonable time and the heuristic approach can efficiently construct the channel allocation matrices.

Key words: channel allocation;link scheduling;variable channel-width;wireless networks