国产欧美精品一区二区,中文字幕专区在线亚洲,国产精品美女网站在线观看,艾秋果冻传媒2021精品,在线免费一区二区,久久久久久青草大香综合精品,日韩美aaa特级毛片,欧美成人精品午夜免费影视

In order to solve the problem of Inter-cell interference coordination under the LTE-A system based on two-tier heterogeneous networks, an interference scheme of almost black subframes is scheduled in range expansion.To reduce interference and further improve the channel utilization,an algorithm of dynamic almost black subframes allocation is proposed.The algorithm is based on the cell enhancement technology, pointing out that expand users proportion of total subscribers to dynamically adjust the ratio of almost blank subframes.The simulation results show that the proposed algorithm achieves system capacity and the efficiency of channel improvements , comparing with a fixed proportion of the almost black subframes.