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Method, device and system for replacing service control signaling channel

一种信令信道、业务控制的技术，应用在通信领域，能够解决降低传输效率等问题

Active Publication Date: 2009-12-16
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In view of this, the embodiments of the present invention provide a method, device and system for replacing a service control signaling channel, so as to solve the problem of giving up using the GM interface in the prior art when the PS network where the currently used GM is located is interrupted. The problem of transmission efficiency

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  • Method, device and system for replacing service control signaling channel
  • Method, device and system for replacing service control signaling channel
  • Method, device and system for replacing service control signaling channel

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Embodiment Construction

[0035] When a user equipment ICS UE-A in the ICS system conducts a session with another user equipment UE-B, it first needs to initiate a session request process through the service control signaling channel (GM interface) of the first PS network. The process is as follows figure 2 Shown.

[0036] Specifically include the following steps:

[0037] Step S101, ICS UE-A initiates a service control signaling Invite message to UE-B through a GM interface.

[0038] ICS UE-A is an IMS terminal with ICS capability enhancement (including the interaction of service control signaling with the SCC AS, establishment of bearer control signaling and bearer, etc.), the Session Description Protocol (Session Description Protocol, SDP) of the Invite message Include the indication information of using the CS network as the bearer, and the Invite message first reaches the serving CSCF (Serving-CSCF, S-CSCF) of UE-A.

[0039] Step S102, the S-CSCF forwards the Invite message to the SCC AS.

[0...

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Abstract

The embodiment of the invention discloses a method for replacing a service control signaling channel. A circuit switching CS network is used as the carrier, and after the service control signaling channel establishes the connection with an opposite terminal at a piece of user equipment UE of a first packet switching PS network, the method comprises the following step: by transmitting a replacement request message in a second PS network, indicating a network side to replace the service control signaling channel according to the replacement request message. The invention also discloses a device and a system for implementing the method. In the embodiment of the invention, when the PS network in which a current GM interface exists is not available, the UE can utilize the GM interface of a new available PS network to replace the current GM interface, thereby ensuring the successful data transmission.

Description

technical field [0001] The present invention relates to the technical field of communications, and more specifically, to a method, device and system for replacing a service control signaling channel. Background technique [0002] Traditional mobile communication networks are mainly Circuit-Switched (CS), including GSM and CDMA. Each operator has established a relatively complete and rich service platform based on the CS network, and the mobile switching center (Mobile Switch Center, MSC) is responsible for call routing and service logic execution (such as forwarding service). [0003] With the continuous popularization and development of network IP technology, IP multimedia services have attracted more and more attention, and an IP Multimedia Sub-system (IP Multimedia Sub-system, IMS) that provides IP multimedia services has been promoted and developed accordingly. IMS supports user equipment (User Equipment, UE) to access IMS through various packet switching networks (Pack...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/16H04W76/02
CPCH04L29/06217H04L29/06265H04L65/1016H04L65/104H04L29/06326H04W36/0022H04L65/1069H04L61/106H04L65/1095H04W36/00224H04L65/1101
Inventor 金辉龙水平
Owner HUAWEI TECH CO LTD
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