4G/5G分组流描述管理及其优化方法

4G/5G Packet Flow Description Management and Optimization

PFD管理方法主要用于解决后向数据相关规则传输过多时出现的负载过大问题,可动态推送PFD和相应计费规则。首先介绍了3GPP pre-R16中4G/5G的PFD管理方法,包括pull mode和push mode两种方法,同时分析了现有方法的不足,并介绍了相应的优化方案。应用新的优化方法,可减少PFDF和PCEF/TDF/SMF间的信令负荷,同时使PFD管理流程更加完善。

The PFD management is mainly used to solve the problem of excessive load when the backward data related rules are transmitted too much,and the PFDs and corresponding charging rules are pushed dynamically.The paper first introduces the 4G/5G PFD management methods in 3GPP pre-R16 specifications,including pull mode and push mode.Meanwhile,the shortcomings of the existing methods are analyzed and the corresponding optimization schemes introduced.The application of the new optimization method can reduce the signaling load between PFDF and PCEF/TDF/SMF,and also improve of the PFD management process.