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Method of switching-over between systems

A mobile switching center and 3G network technology, applied in the field of wireless communication, can solve the problems of limited capabilities of the mobile switching center and the base station controller protocol version, handover failure, etc., to improve competitiveness, improve satisfaction, and achieve low cost. Effect

Inactive Publication Date: 2009-02-11
HUAWEI TECH CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

[0021] The present invention provides a method for switching between systems, which is used to solve the problem in the prior art that the switching from the 3G network system to the 2G network system is caused by the limitation of the protocol version supported by the mobile switching center and the base station controller in the 2G network system. failure problem

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  • Method of switching-over between systems
  • Method of switching-over between systems
  • Method of switching-over between systems

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Embodiment Construction

[0048] The present invention is applied to switching from a 3G network system to a 2G network system. In the switching process, the mobile switching center (MSC / MSC Server) or radio network controller (RNC) in the 3G network system, according to the 2G network system to be switched to The protocol version supported by the target mobile switching center and the base station controller converts the cell identifier discriminator included in the cell identifier of the handover source cell into a cell identifier discriminator that can be recognized by the 2G target mobile switching center and the base station controller.

[0049] If the mobile network number (MNC) in the 3G network system is different from the MNC in the 2G network system, then the MSC / MSC Server or RNC of the 3G network will convert the MNC contained in the cell identity of the handover source cell into The 2G target mobile switching center and the MNC of the mobile network to which the base station controller belong...

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Abstract

The method includes procedures: in switching flow, based on version of protocol supported by 2G destination mobile switching center (MSC) and base station controller, MSC in 3G network system / mobile switching server or radio network controller (RNC) converts cell ID discriminator and network number of mobile network included in cell ID of source cell to be switched to cell ID discriminator, 2G destination MSC and network number of mobile network of base station controller recognized by 2G destination MSC and base station controller respectively. The method realizes switching user terminal from 3G network system to 2G network system.

Description

technical field [0001] The invention relates to call switching in the wireless communication field, in particular to a call switching method from a 3G network system to a 2G network system. Background technique [0002] In the current communication network system, 2G network system and 3G network system coexist. The user who initiated the call may cross two network systems during a call. In order to ensure that the user's call is not interrupted, it is necessary to switch between the 2G and 3G network systems. [0003] Especially in the initial stage of 3G network system construction, its coverage is not wide enough, and the existing excellent resources of 2G network should be fully utilized to provide users with business services. [0004] However, when switching from a 3G network system to a 2G network system, if the mobile switching center (MSC) or base station controller (BSC) of the 2G system does not upgrade, the protocol version supported by the 2G MSC or BSC cannot ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q7/38H04W36/14
Inventor 李世军贾永利濮立俊
Owner HUAWEI TECH CO LTD