Method and apparatus for user device switching from packet domain to circuit domain

A user equipment, circuit domain technology, applied in the field of communication networks, can solve the problems of complex routing, high cost, waste of resources, etc., and achieve the effect of simplifying the routing process
CN1881958AActive Publication Date: 2006-12-20HUAWEI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN ¡ China
Patent Type
Applications(China)
Current Assignee / Owner
HUAWEI TECH CO LTD
Publication Date
2006-12-20

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Abstract

The invention relates to a method for switching the user device from group field to the circuit field, for solving the defects of present technique as complex route, waste resource, and high cost, wherein said method comprises: when the user device needs switch in the original conversation, the user device obtains the switch number; the user device uses said switch number as the called number, via simulated circuit field access network, to initialize circuit field conversation request to the circuit field core network; the circuit network conservation request is used to build the call branch from the circuit field to the group field; based on the information of said request, the conservation request is related to the original conservation of user device; at the same time, the switch from the group field to the circuit field air interface is initialized; when the user receives the switch command, the user device informs the network to complete the switch from the group field to the circuit field.
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Description

technical field

[0001] The present invention relates to a communication network, in particular to a method and device for switching user equipment from a packet domain to a circuit domain. Background technique

[0002] In the existing circuit domain network, if it is necessary to provide users with packet domain access services, in order to reduce construction costs, the method of providing services only in hotspot areas is usually adopted. In this case, when multi-mode terminals (packet and circuit When multi-mode) moves from the boundary of the PS domain network to the boundary of the CS domain network, in order to maintain the continuity of the service, it is necessary to switch from the PS domain to the CS domain.

[0003] see figure 1 As shown, method one includes the following steps:

[0004] 1. The DO RNC uses the CSNP protocol to send a 1X Service Redirection message to inform the multimode mobile phone that it is approaching the edge of DO network coverage. [00...

Claims

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