WO2008031290A1 - Procédé permettant e supprimer rapidement une liaison défaillante m2pa - Google Patents

Procédé permettant e supprimer rapidement une liaison défaillante m2pa Download PDF

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Publication number
WO2008031290A1
WO2008031290A1 PCT/CN2006/003229 CN2006003229W WO2008031290A1 WO 2008031290 A1 WO2008031290 A1 WO 2008031290A1 CN 2006003229 W CN2006003229 W CN 2006003229W WO 2008031290 A1 WO2008031290 A1 WO 2008031290A1
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WO
WIPO (PCT)
Prior art keywords
m2pa
signaling
link
protocol entity
peer
Prior art date
Application number
PCT/CN2006/003229
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English (en)
Chinese (zh)
Inventor
Qingyong Liang
Original Assignee
Zte Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zte Corporation filed Critical Zte Corporation
Publication of WO2008031290A1 publication Critical patent/WO2008031290A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges
    • H04Q3/0025—Provisions for signalling

Definitions

  • Transmission signaling layer 2 peer-to-peer adaptation layer
  • the present invention relates to an IP network signaling transmission protocol (SIGTRAN protocol), and particularly relates to a rapid demolition of an abnormal situation such as a packet loss misordering of an MTP2 peer-to-peer adaptation protocol (M2PA protocol).
  • MTP2 peer-to-peer adaptation protocol M2PA protocol
  • Method of fault signaling link BACKGROUND OF THE INVENTION
  • MTP2 Peer to Peer Adaption Layer MTP2 Peer to Peer Adaption Layer
  • MTP3 Message Transfer Part LeveB, information transmission part
  • Level 3 Reliable and orderly delivery of messages between peer-to-peer protocol entities.
  • China's Ministry of Information Industry also officially released the M2PA communication industry standard.
  • the specific protocol structure of M2PA is shown in Figure 1 and Figure 2.
  • M2PA As the transmission signaling layer 2 in the IP network, M2PA is directly carried on the SCTP (Stream Control Transmission Protocol) (RFC2960) entity, and the SCTP protocol entity has the characteristics of reliable and orderly transmission. Therefore, there is no further description of the reliable and orderly transmission mechanism of M2PA in the RFC protocol standard and China's communication industry standards.
  • M2PA as the transport signaling link layer under the MTP3 protocol entity, is used to complete the reliable and orderly transmission of messages between MTP3 protocol entities through the SCTP protocol entity and the M2PA protocol entity.
  • the SCTP protocol entity can ensure the synchronization of the sequence number recovery through retransmission and other mechanisms.
  • an abnormality such as a message loss occurs between the M2PA protocol entity and the SCTP protocol entity
  • the message receiver M2PA protocol entity will always discard the data of the discontinuous sequence number sent by the sender M2PA protocol entity, and the message sender M2PA The protocol entity is unclear because it happened before The message is lost, so the message is continuously sent to the M2PA receiver protocol entity.
  • an object of the present invention is to provide a method for rapidly dismantling a faulty link of a Layer 2 peer-to-peer adaptation layer of a signaling signaling, which solves the problem that it takes a long time to receive the out-of-order MSU in the M2PA protocol entity. Remove the faulty link problem.
  • the present invention provides a method for rapidly dismantling a faulty link of a transmission layering peer-to-peer adaptation layer, wherein the M2PA protocol entity that receives the out-of-order message signaling unit initiates a release signaling link operation. .
  • the method for actively releasing the signaling link operation by the M2PA protocol entity that receives the out-of-sequence message unit is specifically:
  • the M2PA protocol entity that has received the out-of-order message signaling unit sends a link state signaling unit with a value of "exit service" to the M2PA protocol entity that sends the out-of-order message signaling unit;
  • the M2PA protocol entity that receives the out-of-order message signaling unit reports the signaling link to the upper-layer user MTP3 to exit the service, and simultaneously sets the signaling link state to the exiting service state;
  • the M2PA protocol entity that sends the out-of-order message signaling unit receives the link state signaling unit with the value of "exit service" sent by the M2PA protocol entity that receives the out-of-order message signaling unit, and sends the M2PA of the out-of-order message signaling unit.
  • the protocol entity terminates the timer;
  • the M2PA protocol entity that sends the out-of-order message signaling unit reports the signaling link to the upper-layer user MTP3 to exit the monthly service, and sets the signaling link status to exit the monthly service.
  • the method for quickly dismantling the transmission signaling layer 2 peer-to-peer adaptation fault link provided by the present invention is
  • M2PA related to the improvement of the processing flow of the M2PA receiving the out-of-sequence MSU, which actively sends the LSSU (Link State Signal Unit): Out of Service by the M2PA protocol entity side that receives the out-of-order MSU. Release the signaling link. Therefore, the technical solution of the present invention avoids the loss of packet loss in the current protocol implementation, and requires packet loss and chain detachment in a time of two seconds. The M2PA signaling chain is inevitably caused by the M2PA protocol entity receiving the out-of-order message unit.
  • LSSU Link State Signal Unit
  • the road is interrupted and requires a long time interval to detect the interruption of the signaling link and remove the faulty link, thereby maximally preventing the loss of the upper layer user data of the M2PA protocol entity, and ensuring the fast fault signaling link from the process. tear down.
  • the method flow provided by the present invention shortens the time interval for removing the faulty link to the millisecond level. This time improvement is very necessary for communication equipment with very high real-time requirements.
  • FIG. 1 is a schematic diagram of a protocol stack applied in an IPSP according to the related art
  • FIG. 2 is a schematic diagram of a protocol stack applied in an SG according to the related art
  • FIG. 3 is an M2PA according to the related art. Signaling flowchart of the RFC protocol and the M2PA postal protocol standard for M2PA out-of-order error handling;
  • FIG. 1 is a schematic diagram of a protocol stack applied in an IPSP according to the related art
  • FIG. 2 is a schematic diagram of a protocol stack applied in an SG according to the related art
  • FIG. 3 is an M2PA according to the related art. Signaling flowchart of the RFC protocol and the M2PA postal protocol standard for M2PA out-of-order error handling;
  • FIG. 1 is a schematic diagram of a protocol stack applied in an IPSP according to the related art
  • FIG. 2 is a schematic diagram of a protocol stack applied in an SG according to the related art
  • FIG. 3 is an M2PA according to the related
  • the embodiment of the invention provides a method for quickly removing the fault link of the Layer 2 peer-to-peer adaptation layer of the transmission signaling.
  • the method is further described in detail below with reference to FIG. 3 and FIG. 4.
  • the number of the message signaling unit, BSN represents the number of the message signaling unit currently received from the peer M2PA protocol entity:), so the MSU sent by the subsequently received M2PA protocol entity_B will always be discarded.
  • the signaling link must be broken.
  • the method provided by the embodiment of the present invention quickly removes the faulty signaling link that has been out of order.
  • the existing protocol described in FIG. 3 is improved according to the method of the embodiment of the present invention.
  • the LSSU is actively sent when the receiving M2PA protocol entity detects that the message unit of the out-of-order FSN is received. Of Service to release the signaling link.
  • the specific operation is shown in Figure 5. As shown in FIG.
  • the method for quickly removing a faulty link of a Layer 2 peer-to-peer adaptation layer includes the following steps: Step S502: The M2PA protocol entity-A receives the out-of-order message unit MSU; Step S504: The M2PA protocol entity-A sends the LSSU: Out of Service to the M2PA protocol entity_B; Step S506: The M2PA protocol entity-A reports to the upper-layer user MTP3 The signaling link exits the service, and the signaling link status is Out of Service; Step S508: The M2PA protocol entity receives the LSSU sent by the M2PA protocol entity_A: Out of Service, and terminates the Timer T7; Step S510: ⁇ 2 ⁇ The protocol entity _ B reports to the upper layer user ⁇ 3 to exit the service, and sets the signaling link status to Out of Service.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

L'invention concerne un procédé permettant de supprimer rapidement une liaison défaillante M2PA qui comprend les étapes suivantes: l'entité de protocole M2PA ayant reçu l'unité de signal de message hors séquence lance activement le fonctionnement de la liaison de signal de libération. Ce plan technique de l'invention met en oeuvre l'effet d'instruction suivant: il établit que la réception de l'unité de signal de message hors séquence par l'entité de protocole M2Pa entraîne certainement un problème que la liaison de signal M2PA interrompt et il est nécessaire de disposer d'un intervalle de temps plus long pour détecter l'interruption de la liaison de signal et supprimer la liaison défaillante, afin de prévenir une perte plus importante de données d'utilisateur de couche supérieure de l'entité de protocole M2PA et faire en sorte que la liaison de signal défaillante soit supprimée rapidement dans le flux.
PCT/CN2006/003229 2006-09-08 2006-11-30 Procédé permettant e supprimer rapidement une liaison défaillante m2pa WO2008031290A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNA2006101271612A CN101146094A (zh) 2006-09-08 2006-09-08 一种传输信令二层对等适配层故障链路快速拆除的方法
CN200610127161.2 2006-09-08

Publications (1)

Publication Number Publication Date
WO2008031290A1 true WO2008031290A1 (fr) 2008-03-20

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CN (1) CN101146094A (fr)
WO (1) WO2008031290A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1633149A1 (fr) * 2004-09-06 2006-03-08 Siemens Aktiengesellschaft Méthode adaptative pour la mise en service de liaisons dans un réseau de communication, en particulier des liaisons M2AP
CN1798138A (zh) * 2004-12-20 2006-07-05 华为技术有限公司 提高m2pa协议可靠性的实现方法
CN1801801A (zh) * 2004-12-31 2006-07-12 华为技术有限公司 基于m2pa协议的额外链路消息的发送方法
CN1805432A (zh) * 2005-01-14 2006-07-19 华为技术有限公司 提高m2pa协议中业务处理性能的方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1633149A1 (fr) * 2004-09-06 2006-03-08 Siemens Aktiengesellschaft Méthode adaptative pour la mise en service de liaisons dans un réseau de communication, en particulier des liaisons M2AP
CN1798138A (zh) * 2004-12-20 2006-07-05 华为技术有限公司 提高m2pa协议可靠性的实现方法
CN1801801A (zh) * 2004-12-31 2006-07-12 华为技术有限公司 基于m2pa协议的额外链路消息的发送方法
CN1805432A (zh) * 2005-01-14 2006-07-19 华为技术有限公司 提高m2pa协议中业务处理性能的方法

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