Method and system for switching double-transmission mode in mobile telecommunication network

Abstract

The invention is used to reduce the influence to the service when making DTM switch. In the invention, when making DTM switch, source BSS submits request for simultaneously making switch at PS domain and CS domain only to CS domain or PS domain; using the negotiation between CS domain and PS domain to implement the joint switch of two domains. The source BBS sends DTM switch request only to one core network, and the destination BBS receives the DTM switch request only from one core network so as to greatly reduce the quantity of signaling interaction.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to handover technology. Background technique [0002] The Global System of Mobile communication (GSM for short) is currently the largest digital cellular communication system and belongs to the second-generation mobile communication system. [0003] The General Packet Radio Service ("GPRS") network is a new generation cellular mobile communication network based on the GSM network. In order to support the GPRS function, some nodes are added in the existing GSM network, such as Gateway GPRS Support Node (Gateway GPRSSupport Node, referred to as "GGSN"), Serving GPRS Support Node (Serving GPRS SupportNode, referred to as "SGSN"), they all belong to GPRS support node (GPRS Support Node, referred to as "GSN"). [0004] The connection between the main network entities in the GPRS network is shown in Figure 1. The SGSN is connected to the Mobile Switching Center / Visit Location Registe...

AI Technical Summary

Problems solved by technology

[0008] In practical applications, the above solution has the following problems: the terminal in DTM mode is prone to failure or service interruption during the switching process, which affects the service quality of the business

[0009] The main reason for this situation is that, in the prior art, when a terminal in DTM mode performs cell handover, it needs to perform handover requests for CS domain and PS domain services separately, since the two parties have no mutual communication during the request process Negotiation, which may result in the successful switching request of one switching domain in the CS domain and the PS domain and the failure of the switching domain switching request of the other switching domain, resulting in switching failure when the terminal performs switching, or switching domains that cause the switching request to fail Interruption of certain businesses in the business, thus affecting the quality of business services

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