Device and method for preventing service interrupt in signaling transfer protocol

Abstract

The invention discloses a device and method for preventing service interruption in a signaling transmission protocol. The device is located in the protocol entity at the MGC end, and includes a cache area and a protection timer; the method includes steps: when all ASPs in the AS When at least one of the processes is in the "activated" state and all the processes are migrated to the non-"active" state, start the protection timer; judge whether the protection timer expires, and if it expires, discard the messages in the buffer area, and AS according to its The state of the included ASP entity is transferred accordingly, otherwise, the message sent by the upper layer protocol is stored in the cache area, and when any one or more ASPs in the AS migrate to the "activated" state, stop the protection timer started , the AS migrates to the "active" state, and the messages stored in the cache are sent to the SG side by the ASP process in the "active" state, thus avoiding service interruption or messages caused by the inactive AS in a short period of time lost.

Description

technical field [0001] The invention relates to network communication technology, in particular to a device and method for preventing service interruption by using message buffer in signaling transmission (SIGTRAN) protocol. Background technique [0002] In network communication technology, the signaling transmission (SIGTRAN) protocol stack is composed of multiple adaptation layer protocols, mainly including the third-level user adaptation layer (M3UA) of the message transfer part, the second-level user adaptation layer (M3UA) of the message transfer part ( M2UA), V5 User Adaptation Layer (V5UA), ISDN User Adaptation Layer (IUA), Signaling Connection Control Part User Adaptation Layer (SUA) and Message Transfer Part Second Level Peer Adaptation Layer (M2PA), etc. protocol. They occupy similar positions in the next-generation network (NGN), and realize similar functions. They all realize the conversion task from a specific protocol on the original narrowband network to an I...

AI Technical Summary

Problems solved by technology

Therefore, during the ASP switching operation, there will be a short period of time that the AS does not contain any "activated" ASP entities, which will cause the AS state to temporarily migrate to a state other than the "activated" state. The protocol entity reports "unavailable"

However, in the protocols of existing network technologies, since the protocol entity on the MGC side has no mechanism to prevent service interruption and message loss, in the above cases, service interruption or message loss will occur

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