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Service implementation method and system of IP multimedia subsystem network

A multimedia subsystem and network technology, applied in the field of communication, can solve problems such as inability to route, route, IMS service failure, etc., and achieve the effect of reducing repeated investment of users

Inactive Publication Date: 2014-06-11
安彩红
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In the case of local deployment of the IMS network, if the user roams to the IMS network of the visited location, and the intermediate network between the IMS network of the home location and the IMS network of the visited location is not deployed with an IMS network, it may not be possible to send the message of the UE ( For example, registration messages, session invitation messages) are routed to the home network, resulting in failure of IMS services; similarly, messages sent by the home network to the UE (for example, session invitation messages) may not be routed to the visited IMS network

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  • Service implementation method and system of IP multimedia subsystem network
  • Service implementation method and system of IP multimedia subsystem network
  • Service implementation method and system of IP multimedia subsystem network

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Embodiment Construction

[0045] The core idea of ​​the present invention is that an enhanced mobile switching center (E-MSC) is set in the local IMS network. The IMS network performs call control, and exchange of signaling and media for calls with the visiting user as the called user.

[0046] The present invention will be described in detail below with reference to the drawings and embodiments.

[0047] figure 2 It is the architecture of the service implementation system of the IMS network in the embodiment of the present invention Figure 1 ,include:

[0048] 201: User Equipment (User Equipment, referred to as UE); has IMS capabilities, supports the SIP protocol, and is used to register with the P-CSCF in the IMS network through the access device, and establish a session connection with the remote end;

[0049] 202: Enhanced Mobile Switching Center (Enhanced Mobile Switch Center, referred to as E-MSC) server, which is a new network element of the present invention, E-MSC server (abbreviated as E...

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Abstract

A service realization method of IP Multimedia Sub-system (IMS) network is provided. The method includes: after receiving a request for providing a roaming number carrying a User Equipment (UE) number sent by a home network of the UE, an Enhanced Mobile Switching Center (E-MSC) returns the roaming number corresponding to the number of the UE and pointing to the E-MSC to the home network of the UE; after receiving an initial address message carrying the roaming number sent by the Public Switched Telephone Network (PSTN) on which a calling user locates, the E-MSC takes the number of the UE as a called number, and sends a session invitation message to the PSTN via the Serving Call Session Control Function (S-CSCF) entity and the Proxy Call Session Control Function (P-CSCF) entity; after receiving a ringing message of Session Initial Protocol (SIP) sent by the UE, the E-MSC sends an address finish message to the PSTN; and after receiving an answer message of SIP sent by the UE, the E-MSC connects the IP media bearing between the E-MSC and the UE with the CS media bearing between the E-MSC and the PSTN, and sends the answer message of circuit domain to the PSTN, consequently accomplishes the establishment of the IMS session service.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and system for realizing the service of an IP (Internet Protocol, Internet Protocol) multimedia subsystem network. Background technique [0002] In order to maintain the competitiveness of the 3rd Generation Partnership Project (abbreviated as 3GPP) in the field of mobile communications, 3GPP is currently working on the research on packet switched core network (Packet Switched Core, abbreviated as PS Core) and global mobile communications The evolution of the Universal Mobile Telecommunication System Radio Access Network (UTRAN) aims to enable the evolved PS Core (EPC) to provide higher transmission rates, shorter transmission delays, and support E -UTRAN (Evolved UTRAN, evolved UTRAN), GERAN (GSM EDGE radio access network, Global System for Mobile Communications Enhanced Data Rate Global System for Mobile Communications Evolution Technology Wireless Access Network), UTRAN, WLA...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/12H04W8/04H04W76/02H04W80/10
CPCH04W80/10H04W76/026H04W76/16
Inventor 陶全军谢振华郝振武
Owner 安彩红