LTE系统中上行协同技术及其实践

LTE系统中的上行协同主要基于软合并技术，且适用于具备理想传输条件的小区间，因而在实际网络中部署受限。根据TD-SCDMA系统中的多小区联合检测原理提出了基于干扰抑制合并的上行协同技术，并应用于不具备理想传输条件的小区间。试验表明，基于软合并的上行协同技术可以提升主测小区边缘用户的平均吞吐量达89.9%，而基于干扰抑制合并的上行协同技术则可提升29.3%，两者的有机结合可有效提升全网用户感知。

Technique and practice of uplink coordination in LTE system

The uplink coordination in LTE system is mainly based on soft combining,and is suitable for cells connected with ideal transport condition,but it is difficult to deploy.According to the principle of multi-cell joint detection in TD-SCDMA system,the technique of cloud interference rejection combining(Cloud IRC) is proposed,and it can be used between cells without ideal transport condition. According to test in commercial LTE network,the throughput of cell-edge users can be improved by 89.9% on average with the technique of soft combining,and 29.3% with the technique of Cloud IRC. With both of them,the quality of experience is improved in the whole network.