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Call-switching method, call-establishing method and call-processing method as well as device and system

A technology for call switching and call processing, applied in processing methods and corresponding devices and systems, call switching, and establishment fields, capable of solving problems such as call failure and TDM endpoint mismatch, and achieving the effect of avoiding call failure and improving call success rate

Active Publication Date: 2009-12-09
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] The embodiment of the present invention provides a call switching, establishment, processing method and corresponding device and system to solve the defect that the TDM endpoint of the target BSC may not match the TDM endpoint assigned by the MGW in the call switching process of the prior art, resulting in call failure

Method used

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  • Call-switching method, call-establishing method and call-processing method as well as device and system
  • Call-switching method, call-establishing method and call-processing method as well as device and system
  • Call-switching method, call-establishing method and call-processing method as well as device and system

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Embodiment 5

[0125] Such as Figure 7 As shown, it is a flow chart of Embodiment 5 of the call switching method provided by the embodiment of the present invention; this embodiment includes:

[0126] Step 711, BSC1 sends a handover application message to MSC Server, the message carries the voice code RanC1 currently used by BSC1;

[0127] Step 713: After receiving the handover application message, the MSC Server sends an add endpoint request message (ADD.Req) to the MGW, which carries a recommended voice code (preferred RanC, pRanC for short) and endpoint information, for example, endpoint The information may include the endpoint type that needs to be created by the MGW, that is, the IP endpoint;

[0128] Step 715, the MGW creates an IP endpoint paired with BSC2 according to the received Add Endpoint Request message, and returns an Add Endpoint Response message (ADD.Reply), which carries the created endpoint information, that is, the IP endpoint information;

[0129] Step 717, MSC Server...

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Abstract

The invention discloses a call-switching method, a call-establishing method and a call-processing method as well as a device and a system. The call-switching method comprises the following steps: sending a terminal-adding request message with TDM type terminal information, terminal information corresponding to TDM types, IP type terminal information and coded information corresponding to IP types to a media gateway; receiving a terminal-adding response message indicating that the media gateway successfully establishes TDM terminals and IP terminals; sending a switching request message with a circuit identifier cell and the IP type terminal information to a destination substation controller; and receiving a switching request acknowledgement message which is returned by the destination substation controller and carries the TDM type terminal information or the IP type terminal information. The embodiment of the invention can avoid the situations of call failures caused by the mismatched TDM terminals which are respectively distributed at the destination substation controller and a core network side and improve the call success ratio.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a method for switching, establishing and processing a call, and a corresponding device and system. Background technique [0002] The Global System for Mobile communication (GSM for short) initially transmits signals based on a time division multiplexing (Time Division Multiple, TDM for short) transmission mode. Later, with the continuous development and popularization of Internet Protocol (Internet Protocol, referred to as IP) technology, the core network (Core Network, referred to as CN) has fully realized IP, and introduced the A interface signaling plane IP between CN and access network. Transmission SIGTRAN, the architecture diagram of the GSM system is as follows figure 1 As shown, the dotted line represents the signaling plane (Signaling), and the solid line represents the user plane (User plane). In this architecture, only the user plane of the A interface still adopt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/16H04W8/08H04W76/02H04L1/16
CPCH04L65/103H04W36/10H04L29/06244H04L65/1053H04L65/1096H04W80/04H04W88/16H04W28/04H04L29/0638H04W36/0033H04L29/06292
Inventor 秦钧朱星王之曦
Owner HUAWEI TECH CO LTD
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