Method and device for processing SCTP (stream control transmission protocol) link failure of an S1 interface

Abstract

The invention provides a method for processing SCTP (stream control transmission protocol) link failure of an S1 interface. The method includes the steps: searching UE (user equipment) in a connection state on an SCTP link when an MME (mobility management entity) detects that the SCTP link is disconnected; adding the identity of the UE into a release access bearing request message; transmitting the release access bearing request message to an S-GW (service-gateway); returning a release access bearing reply message to the MME. The S-GW is used for releasing bearing resources of S1-U interfaces of the UE. The bearing resources of a plurality of S1-U interfaces of the UE can be released once, equipment modification is less, modification cost is low, the frequency of message transmission is decreased, and requirements for performances of a network, home terminal equipment and opposite terminal equipment are lowered.

Description

technical field [0001] The present application relates to the technical field of LTE, and in particular to a method for processing an SCTP link failure of an S1 interface, and a device for processing an SCTP link failure of an S1 interface. Background technique [0002] Long Term Evolution (LTE) network is the next generation mobile wireless access system of 3GPP, including core network equipment and evolved base station (eNode B, eNB). The core network equipment includes a mobility management entity (Mobility Management Entity, MME) and a serving network management (Serving Gateway, S-GW). MME belongs to the control plane and is responsible for the mobility management of the control plane, including user context and mobility state management, assigning temporary user IDs, etc.; S-GW belongs to the user plane and is responsible for initiating paging for downlink data in idle state and managing storage IP bearer parameters and routing information in the network, etc.; the MM...

AI Technical Summary

Problems solved by technology

[0007] When the SCTP link between the MME and the eNodeB is disconnected, for users in the connected state on the MME, it is necessary to notify the S-GW to release the S1-U bearer resources of all users in the ECM-CONNECTED state on the SCTP link to avoid UE The link status of the user on the MME and S-GW is inconsistent with the link status of the user on the MME and S-GW, resulting in user service access timeout or failure, and at the same time avoiding the hanging of resources on the S-GW device. According to the description of the agreement (29274-910), S1-U In the bearer release process, a GTPv2-C Release Accesss Bearers Request message needs to be sent to each user to release the S1-U bearer resources of the user. However, if one or a group of SCTP links is disconnected, the There will be hundreds or even tens of thousands of users on the network, and the release process initiated will cause S11 network congestion and affect the performance processing of the local MME device and the peer S-GW device, which may easily cause the local MME device or the peer S-GW device to Performance degradation, more serious may cause equipment downtime

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