A method for transmission signaling L2 peer adaptation layer SN recovery synchronization

Abstract

The utility model discloses a method for an M2PA serial number synchronization recovery of a signal transmission, relating to an MTP2 peer-to peer adaptation protocol, which aims at solving the problem of incapability of signal synchronization between a sender M2PA protocol entity and a receiver M2PA protocol entity when the M2PA protocol entity receiving an out-of-sequence MSU in an M2PA protocol. At least a new class of message unit, which carries serial number information of a discarded MSU, is created by the M2PA protocol entity receiving out-of-sequence MSU in the utility model. Then the M2PA protocol entity which receives the out-of-sequence MSU sends a message unit from the least new class of message unit to the M2PA protocol entity which transmits the out-of-sequence MSU. The utility model has the advantages of achieving a recovery of MSU serial number transmitted between the M2PA protocol entities, and avoiding the possibility of M2PA signaling link interruption resulting from a packet loss and an out-of-sequence phenomenon of a message unit.

Description

technical field [0001] The present invention relates to an IP network signaling transmission protocol (SIGTRAN protocol), and in particular to a solution for a corresponding sequence number recovery synchronization mechanism when abnormal situations such as packet loss and sequence error occur in the MTP2 peer-to-peer adaptation protocol (M2PA protocol). Background technique [0002] With the gradual maturity of IP network technology, IP network can be used to carry services such as voice, data, and multimedia. Traditional circuit-switched networks and IP networks are in the stage of integration. In order to realize the interconnection between traditional circuit-switched networks and IP networks, emerging The requirements for transmission of SS7 and other circuit-switching signaling protocols on IP networks. In order to meet the needs of transmitting signaling protocols on the IP network, the IETF network working group set up a special signaling transmission group. The IP n...

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Problems solved by technology

[0004] In order to overcome above-mentioned defect, the object of the present invention is to provide a kind of method that transmission signaling two-layer peer-to-peer adaptation layer serial number restores synchronously, and this method solves when M2PA protocol entity receives out-of-sequence message signaling unit (MSU), The problem that the sequence number of the sender M2PA protocol entity and the receiver M2PA protocol entity cannot be synchronized

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