基于最小信道能量的多点-多用户协作切换

Multi-point to Multi-user Cooperative Handoff Based on the Minimum Channel Energy

传统的协作切换方法针对单端协作情况。提出了一种支持多点-多用户协作切换方法。以用户的最低信噪比(SNR)需求作为QoS参数指标来计算最小信道能量值,以该值作为协作切换的门限值。通过对当前RRU/UE协作组合与RRU/UE协作组合空间备份内信道质量的动态监测,实现自适应的协作软、硬切换。仿真结果表明,提出的方法能有效地降低切换率,提高切换成功率。

Traditional cooperative handoff method based on single-ended collaboration, multi-point to multi-user cooperative handoff method is proposed. Minimum channel energy value by user＇s minimum requirements SNR is calculated, then used minimum channel energy value as the threshold value of cooperative handoff. Dynamic moni- toring channel quality of the being used RRU/UE and the alternate RRU/UE, self-adaptive cooperative soft handoff and cooperative hard handoff. The simulation results show that the proposed method reduce handoff times , and im- prove successful probability of handoff.