Method, device and system for fault treatment of access session control server

Abstract

The invention discloses a method for the fault treatment of an access session control server, which comprises the following steps that: a user data server performs fault detection of the access session controller server in a network; when the user data server detects that the access session control server goes wrong, the user data server selects at least one access session control server not goingwrong; and the selected access session control server performs access treatment of the original user bound to the access session control server going wrong. The invention also discloses the user dataserver, the access session control server and a network system. The method, the user data server, the access session control server and the network system can discover the faults of the access session control server in the network in time, and switch services to other access session control servers not going wrong in the network, reduce the service delay, improve the user experience, can fully utilize the access session control server in the network to perform the access treatment on the user, and have high utilization rate of network resources, flexible capacity configuration and good expandability.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a fault handling method, device and system for accessing a session control server. Background technique [0002] IMS (IP Multimedia Subsystem, IP Multimedia Subsystem) is a network architecture defined by 3GPP (Third Generation Partnership Project). UE (User equipment, user equipment) provides various services. [0003] NGIMS (Next Generation IP Multimedia Subsystem) is an IMS network integrated with P2P (Point To Point) technology, which simplifies the functional entities in the IMS network and makes the network structure simpler. NGIMS logical structure such as figure 1 shown, where: [0004] PSTN (Public Switched Telephone Network) communicates with IMS-MGW (IP Multimedia Subsystem-Media Gateway) and MGCF (Multimedia Gateway Control Function) through the PSTN interface. [0005] The IMS-MGW communicates with the MRFP (Multimedia Resource Function Processor, multimed...

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Problems solved by technology

[0039] However, the inventor has noticed that the above-mentioned disaster recovery method for re-registering the UE to a new session controller has the following disadvantages: the re-registration period of the UE is relatively long, about 7 days (the 3GPP 24.229 standard is 600,000 seconds), and, If the called UE does not actively initiate a call before re-registration, the core network cannot find that the IP signaling link with the called UE has been interrupted

Usually, it takes a long time for the user to perceive the failure of the network session controller, which makes the re-registration delay of the user too long, so that the called UE cannot be successfully called by other users for a long time, and the call cannot be connected for a long time. poor user experience

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