For the problem that user experience is impacted because of parameter setting unreasonable in TD-SCDMA、 GSM converged network.In this paper

we proposed a series of 2G and 3G interoperable parameter optimization methods: inter-system handover waiting timer optimization method

maxinum number of handover failure punishment and handover failure punishment timer optimization method

handover threshold optimization method of PS traffic

joint optimization method between the handover/reselection parameters of 3G to 2G and reselection parameters of 2G to 3G.The application of these methods enhance the performance of 2G and 3G interoperability

achieved a rational use of network resources and improved user experience.