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提出了一种蜂窝网络中关于移动中继的选择方案,将小区内的用户按照下行路径损耗分为一跳用户和两跳用户.一跳用户由基站直接对其分配资源,两跳用户采用整体优化的吞吐量预测中继选择算法选择空闲用户作为中继节点.该算法全面考虑了带宽与信道质量对通信速率的影响,以两跳用户所在接入链路与回程链路吞吐量相等为原则主动调节两跳用户带宽分配比例,并且通过匈牙利算法计算出系统吞吐量最大时的最佳匹配矩阵.仿真结果表明,该算法能够有效提升边缘用户吞吐量和频谱利用率.
A scheme of mobile relay in cellular network is proposed, which divides the users in the cell into one-hop users and two-hop users according to the downlink path loss.The one-hop users allocate resources directly to the base stations and the two-hop users adopt the whole The optimized throughput prediction relay selection algorithm chooses idle users as relay nodes.The algorithm fully considers the impact of bandwidth and channel quality on the communication rate and takes the principle that the throughput of access links and backhaul links where two hops users are equal The proportion of two-hop users’ bandwidth allocation was proactively adjusted, and the best match matrix was calculated by the Hungarian algorithm when the throughput of the system was maximized.The simulation results show that the algorithm can effectively improve the throughput and spectral efficiency of the edge users.