Method and system for implementing incoming relocation

Abstract

The invention provides a method and a system for implementing incoming relocation. The method comprises that: when a relocation incoming mobile switching center (MSC) waits for an interoffice connection state, the incoming MSC receives and caches relocation access message; and when a load is established successfully and the relocation incoming MSC waits for a mobile phone access state, the relocation incoming MSC completes interoffice relocation by using the cached relocation access message, enters a call steady state and continuously keeps conversation. The relocation access message is cached in the incoming relocation waiting interoffice connection state, and subsequent processing is performed in the waiting mobile phone access state, so the problem of overtime failure because the radio relocation access message reaches the 3G MSC-B earlier compared with the initial address message (IAM) is avoided, and successful completion of the incoming relocation flow is ensured.

Description

technical field [0001] The present invention relates to relocation technology, in particular to a method and system for realizing incoming relocation of mobile users across Mobile Switching Centers (MSC, Mobile Switching Center). Background technique [0002] In a WCDMA network, when a mobile user moves across location areas between MSCs during a call, due to changes in the quality of wireless network signals, the radio network system (RNS, Radio Network System) will trigger inter-office relocation to maintain the current user in good condition. conversation quality. [0003] According to the existing agreement, when the user initiates relocation, the MSC at the relocation outgoing side (referred to as 3G_MSC-A in this text) sends the mobile application part (MAP, Mobile Application Part) message to the MSC at the relocation incoming side (abbreviated as 3G_MSC-A in this text). 3G_MSC-B) sends a relocation request; after receiving the incoming relocation request, 3G_MSC-B w...

AI Technical Summary

Problems solved by technology

[0020] In the second case, due to the complexity of modern communication networks, there is usually a gateway mobile switching center (GMSC, Gateway Mobile Services Switching Center) between 3G_MSC-A and 3G_MSC-B. If the gateway device adopts early ACM mechanism (that is, after the GMSC receives the IAM message, it directly returns the ACM to the exchange office before forwarding it to the exchange office), then the IAM message will arrive at 3G_MSC-B later than the wireless relocation access message

When the network is complex, especially after the introduction of IP networking, the delay of messages between networks has increased compared with the early CS domain traditional network, and due to the existence of intermediate network elements such as GMSC, the inconsistency of the processing mechanism will cause To a certain extent, the wireless relocation access message is entered earlier than the inter-office IAM message, which leads to the failure of incoming relocation and affects the relocation index of network equipment.

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