随着现网用户数的不断提升和业务模型的极大丰富,网络流量呈现井喷式增长.为了满足日益增长的用户数据业务需求,对LTE网络资源进行深入研究,基于用户感知和大数据分析给出LTE网络扩容准则.结合网络现状,制定了LTE扩容优化方案.

针对目前现网O侧数据对无线规划支撑所采用的区域性和整体性指标,对实际情况反映不够精细,提供约束条件不够充分的问题,提出一种LTE无线规划O侧支撑方法,从小区级指标的粒度和多源O侧数据的维度反映现网情况.实际应用表明,该方法可有效提升网络现状把控的精细度,为无线规划关键环节提供切实有效的现网数据支持.

为解决电信运营商建维优支撑系统下VoLTE业务感知保障无线侧指标体系不完善的问题,通过结合理论分析与现网实测数据,并基于VoLTE技术特点,从信号水平、传输效能、资源效率三方面给出了在保障VoLTE业务感知优良前提下的指标需求,相关结果已成为VoLTE业务部署和运维的无线侧参考.

As 4G voice service solutions are more complicated than 3G/2G networks,there wil be many typical problems influencing 4G users’voice quality in LTE construction early stages. Thus,end-to-end CSFB performance evaluation method is proposed from three stages,including fal back to 3G,cal establishment in 3G,disconnecting and return to LTE. The key problems of large cal latency,low cal connection rate and concurrent service quality are analyzed. And then optimization methods and so-lutions are also proposed and applied in the network. Compared with the performance before optimization,the CSFB cal laten-cy and cal-connection rate are improved.

It discusses the key problems of inter-RAT operation for PS service between LTE systems and the existing 2G/3G networks. Considering the performance of different schemes and the complexity of network updating,the inter-RAT operation strategy and scheme for the initial LTE network construction is proposed. And the parameter configuration rules and advices are also given both in idle and RRC connected state. It gives great reference to the inter-operation of China Unicom networks.

In order to solve the phenomenon that network KPI cannot reflect users' real perception,a new method based on call detail record was discussed.On the basis of multiple data sources,the data analysis model based on users' behavior was built.The results show that the method can reflect users ' real perception,find many hidden problems and provide theoretical guidance for optimization.