Control method and system of session route path

A path control and routing technology, applied in the field of network communication, can solve the problems of affecting the quality of voice service and reducing the quality of voice service, and achieve the effect of reducing DTM bearer path, reducing the number of voice codec conversions, and extending the IP bearer path

Active Publication Date: 2007-02-14
HUAWEI TECH CO LTD
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  • Claims
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AI Technical Summary

Problems solved by technology

When the DTM bearer is converted into an IP bearer, it is necessary to convert the voice codec. Since the conversion of the voice codec will reduce the quality

Method used

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  • Control method and system of session route path
  • Control method and system of session route path
  • Control method and system of session route path

Examples

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Embodiment Construction

[0122] When the session in the IMS domain needs to be routed to the circuit switching domain, if the application server can control the routing path of the session according to the predetermined routing policy, it can achieve different purposes of routing optimization or bearer optimization, such as in the call continuity issue In the static anchor scheme, if the MGCF in the IMS domain can route the session to the circuit switching domain nearby, the IP bearer path introduced by the static anchor scheme can be extended as much as possible, the DTM bearer path is reduced, and the DTM of the session is optimized. Bearer path; if the session can be routed back to the circuit-switched domain from the IMS network entity it has been routed through, the IP bearer path introduced under the static anchor solution can be eliminated, effectively reducing calls from the circuit-switched domain to the IMS domain and then to the circuit-switched domain. The number of codec conversions during...

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Abstract

This invention provides a method for controlling session route paths and a system, in which, an appied server determines a metwork entity in the IMS domain corresponding to the session and provides it to S-CSCF, which routes the session to the network entity in the IMS and the network entity in it routes it to the network entity in the circuit exchange domain. This invention does not make sound coding and decoding conversion between DTM and IP loads to two sections of entry and outlet calls of a same session so as to reduce the transmission times of the sound coding and decoding to avoid the reduction of phone service. This invention prolongs the IP load path in the IMS domain and reduces the DTM load path to increase the usability of IP load.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a session routing path control method and system. Background technique [0002] Starting from the 3GPP R5 (3rd Generation Partnership Project) stage, the UMTS (Universal Mobile Telecommunications System) core network is divided into CS (Circuit Switching), PS (Packet Switching) and IMS (IP Multimedia Subsystem) Three subsystems. [0003] The CS domain (Circuit Switched Domain) is used to provide users with circuit-type service connections. The CS domain mainly includes: MSC (MSC Server / CS-MGW, Mobile Switch CenterServer / CS-Media GateWay, mobile switching center server / circuit domain-media gateway), GMSC (Gateway MSC gateway mobile switching center) and IWF (InterWorking Function, interworking function). Among them, the MSC completes the switching and signaling control functions of circuit-switched services; the GMSC is an MSC that completes the routing and addres...

Claims

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Application Information

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IPC IPC(8): H04L12/64
Inventor 朱东铭段小琴张海
Owner HUAWEI TECH CO LTD
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