Method and system for realizing bidirectional alternative operation of circuit field and group field

Abstract

Adding a mobile exchange functional entity to connect circuit domain and network in packet domain respectively, the method realizes forwarding control signaling and data between circuit domain and packet domain further. In circuit domain, function of mobile exchange functional entity is same as function of MSC, and in packet domain, function of mobile exchange functional entity is same as function of AS and BCCF / MGW capable of ending a call. The invention also discloses bidirectional interoperability system between circuit domain and packet domain. The invention can realize interoperability function of two networks completely without need of modifying current circuit domain and access network i.e. packet network can receive call from circuit domain, and circuit domain can receive call from packet domain.

Description

technical field [0001] The present invention relates to the technical field of cdma2000 system, in particular to a method and system for realizing two-way interoperability between circuit domain and packet domain in cdma2000 system. Realizing two-way interoperability between circuit domain and packet domain refers to the realization of terminal services in circuit domain A method for packet domain services, and a method for realizing circuit domain services by terminals performing services in the packet domain. Background technique [0002] see figure 2 As shown, the cdma2000 1x network provides two services of the circuit domain 111 and the packet domain 112. Among them, circuit domain 111 includes SMC 104 , HLR 103 , MSC / VLR 102 , and BSS 101 , and packet domain 112 includes IMS SMC 109 , HSS 108 , and S-CSCF 107 . [0003] If a mobile terminal (MS) performs services in the PS domain, there may be system messages or paging messages for the MS in the CS domain network. Co...

AI Technical Summary

Problems solved by technology

However, in the above network framework, when the mobile terminal performs services in the packet domain, that is, when it is in the PDP active state, and the MS itself has sufficient resources, the MS can listen to the system messages or paging messages of the CS domain network. Moreover, if the MS itself has insufficient resources, that is, because it can perform video (VT) services, it may occur that due to its own insufficient resources, it cannot monitor system messages and paging messages in the CS domain.

However, when the user is conducting business in the circuit domain, he cannot monitor the packet domain network

Therefore, packet domain traffic may be missed due to the inability to listen

[0004] Of course, in order to achieve interoperability, the cross-paging model and the improved cross-paging model have been proposed successively. For example, in the improved cross-paging model, the IWSFunctin is further added to the MSC, and this function can make the packet Active mobile terminals in the domain can receive system messages and paging messages in the CS domain, but they cannot enable terminals in the CS domain to perform packet domain services, and this method also requires the existing access network and CS domain The network is improved, and it is more complicated to implement

Images