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Method and system for call hold

A call hold and purpose technology, applied in the direction of electrical components, wireless communication, connection management, etc., can solve the problems of "failure to switch, unable to achieve call hold, unable to achieve call hold" without support, etc., to maintain continuity and improve service quality Effect

Inactive Publication Date: 2006-11-22
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Apparently there is no way to hold the call when the backward handover fails
[0042] To sum up, in the prior art, there is no system that supports messages such as "failed to switch, return to the original channel", and there is no method to support messages such as "failed to switch, return to the original channel". Call hold in case of handover failure

Method used

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  • Method and system for call hold
  • Method and system for call hold
  • Method and system for call hold

Examples

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Embodiment Construction

[0061] Embodiment 1 of the method for call hold in the case of backward switching failure of the present invention, see Figure 4 , the MS switches between the source BSC and the destination BSC, the source BSC and the destination BSC belong to the SMSC and the AMSC respectively, specifically including the following steps:

[0062] Step 101, SMSC receives handover failure (Handoff Failure) message, keeps original communication channel, namely the business channel that source BSC sets up;

[0063] Step 102, SMSC sends information indicating MS handover failure to AMSC, the information indicating MS handover failure is pre-defined in the E interface protocol of SMSC and AMSC, such as the handover cancellation message of HANDCANCEL, such as HANDCANCEL;

[0064] Step 103: After receiving the information indicating that the handover of the MS fails, the AMSC controls the target BSC to release the established traffic channel.

[0065] It can be seen that through the above steps, th...

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PUM

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Abstract

The invention relates to a method for keeping calling, which comprises following steps that: SMSC receives the switch failure information, to keep former communication channel; SMSC sends the message that informing about the MS switch failure to the AMSC; AMSC receives said message, to instruct the target BSC to release built service channel. The invention also provides a relative system, which comprises original BSC, SMSC, AMSC and target BSC, while the original BSC is used to receive the MS switch information and control MS to switch channel; the target BSC is used to build and release the communication channel according to the instruction of AMSC; SMSC is used to send the message that informing about MS switch failure to the AMSC; and the AMSC is used to receive said switch failure message and instruct target BSC to release built service channel. The invention can keep the call continuity when the backward switch is failing, to improve the application effect and the service quality.

Description

technical field [0001] The present invention relates to a method and system for call holding, in particular to a method for returning the call to the original channel and implementing call holding based on a predefined handover cancel message in the case of a backward handover failure, and a method supporting the method The system belongs to the technical field of mobile communication. Background technique [0002] At present, mobile communication services continue to develop and popularize, and the coverage area of ​​mobile communication signals is also expanding. Therefore, operators must ensure that users can communicate across Base Station Controllers (BSC) or even Mobile Switching Centers (Mobile Switching Centers) during calls. SwitchCenter (MSC for short) can maintain the continuity of the call and reduce the call drop rate when the location moves. [0003] In the prior art, when a user moves across a BSC or MSC during a call, a hard handover method is used for hando...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/10H04W36/18H04W76/06
Inventor 蒋砾
Owner HUAWEI TECH CO LTD