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Method and apparatus for handling p-cscf failure and restoring connection

A P-CSCF, access network technology, applied in the fault field of proxy call session control function nodes, can solve problems such as battery exhaustion, and achieve the effect of improving service quality

Active Publication Date: 2018-05-15
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this solution drains the batteries of terminals implementing UEs quickly, since they typically use cellular network access

Method used

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  • Method and apparatus for handling p-cscf failure and restoring connection
  • Method and apparatus for handling p-cscf failure and restoring connection
  • Method and apparatus for handling p-cscf failure and restoring connection

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Embodiment Construction

[0063] According to the present invention, there is provided a method for restoring a connection between a node and a User Equipment (UE) in an IP Multimedia Subsystem (IMS) network. The UE is associated with a Proxy-Call Session Control Function (P-CSCF) of said IMS network. Furthermore, the UE is associated with a control node of a packet access network using which the UE connects to the IMS network. Furthermore, the IMS node is unable to establish communication with the UE via the P-CSCF node.

[0064] figure 2 The main steps according to the method are illustrated. Once the S-CSCF node or AS node expecting to reach the UE has detected a P-CSCF failure, it proceeds as follows. The S-CSCF node processing the corresponding SIP signaling sends a DIAMETER message to the HSS node. This corresponds to step 10. The DIAMETER message is preferably a DIAMETER User Authorization Request (UAR) indicating with a new value in the User Authorization Type Attribute Value Pair (AVP) t...

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Abstract

A method for restoring a connection between a node and a user equipment (UE) in an IP Multimedia Subsystem (IMS) network. The UE is associated with a Proxy Call Session Control Function node (P-CSCF) of said IMS network and is associated with at least one control node in a packet access network through which the UE is connected to the IMS network. The method allows restoring the connection of the UE to the IMS network node after the IMS node has been unable to establish communication with the UE via the P-CSCF node.

Description

technical field [0001] The present invention relates to handling the failure of a Proxy Call Session Control Function (P-CSCF) node in an IP Multimedia Subsystem (IMS) network. In particular, it relates to handling a P-CSCF node failure in the case when an Application Server (AS) of an IMS network attempts to connect to a User Equipment (UE) registered to the failed P-CSCF node. Background technique [0002] IP Multimedia (IPMM) services provide a dynamic combination of voice, video, messaging, data, etc. within the same session. By increasing the number of media and basic applications that can be combined, the number of services offered to end users will grow and the human-to-human communication experience will be richer. This will lead to a new generation of personalized, rich multimedia communication services, including so-called "combined IP multimedia" services. [0003] The IP Multimedia Subsystem (IMS) is a technology defined by the Third Generation Partnership Proj...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04W76/19
CPCH04W76/19H04L65/1016H04L65/1046H04L65/1073H04W76/18H04L61/4588H04L67/147H04W76/30H04W24/04
Inventor M·哈伦斯塔尔S·布劳
Owner TELEFON AB LM ERICSSON (PUBL)