LTE现网中的参数配置均基于网络规划阶段的拓扑结构及仿真计算,导致部分参数的配置不适用于现网实际,进而影响网络服务质量。因此,结合实际工程项目,提出一种基于TA( Time Ad-vanced,时间提前量)的网络优化策略,即根据在网用户接入时的TA统计调整小区半径,进而调整小区的Ncs( Number of cyclic shift,循环移位序列)配置；工程实践表明,调整后网络的无线接通率、切换成功率、掉线率等指标均有明显改善,验证了该策略的有效性和可行性。%The parameter configuration in LTE network are all based on the topology and simulation calcula-tion of network planning stage,and this would usually result in that some parameters are not applicable to the real network and affects the network service quality. Therefore, in combination with the actual project, a network optimization strategy based on TA ( Time Advanced) is proposed, which according to TA of the user access, calculates the cell radius and adjusts the NCS ( Number of Cyclic Shift) of cell. Engineering practice indicates that with the application of optimization,network performances, including wireless call completing rate, handover success rate and radio drop rate could be markedly improved, and the effective-ness and feasibility of this strategy be incontrovertibly proved.
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