WO2008128405A1 - Système optimisé basé sur un protocole de transport de signalisation de réseau ip et son procédé d'obtention - Google Patents

Système optimisé basé sur un protocole de transport de signalisation de réseau ip et son procédé d'obtention Download PDF

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Publication number
WO2008128405A1
WO2008128405A1 PCT/CN2007/003732 CN2007003732W WO2008128405A1 WO 2008128405 A1 WO2008128405 A1 WO 2008128405A1 CN 2007003732 W CN2007003732 W CN 2007003732W WO 2008128405 A1 WO2008128405 A1 WO 2008128405A1
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WO
WIPO (PCT)
Prior art keywords
protocol entity
message
link
m2ua
entity
Prior art date
Application number
PCT/CN2007/003732
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English (en)
Chinese (zh)
Inventor
Qingyong Liang
Ningjun Chen
Puran Chen
Tianwei Zhang
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 WO2008128405A1 publication Critical patent/WO2008128405A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10—Architectures or entities
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M7/00—Arrangements for interconnection between switching centres
    • H04M7/12—Arrangements for interconnection between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal
    • H04M7/1205—Arrangements for interconnection between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal where the types of switching equipement comprises PSTN/ISDN equipment and switching equipment of networks other than PSTN/ISDN, e.g. Internet Protocol networks
    • H04M7/126—Interworking of session control protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges
    • H04Q3/0025—Provisions for signalling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges
    • H04Q3/0029—Provisions for intelligent networking
    • H04Q3/0045—Provisions for intelligent networking involving hybrid, i.e. a mixture of public and private, or multi-vendor systems

Definitions

  • the invention belongs to the field of softswitch communication, and in particular relates to an optimization system based on an IP network signaling transmission protocol and an implementation method thereof.
  • the IP network signaling transmission protocol (SIGTRAN protocol) is developed to support the transmission of traditional over IP networks using the Stream Control Transmission Protocol (SCTP). Circuit switched signaling.
  • SIGTRAN protocol The IP network signaling transmission protocol
  • SCTP Stream Control Transmission Protocol
  • M2UA MTP2 User Adaption Layer
  • M2UA MTP2 User Adaption Layer
  • MTC Media Gateway Controller
  • the basic application model of the protocol is shown in FIG. 1, and includes a signaling termination point/signaling transit point (SEP/STP) 101, an SG 105, and an MGC 111, where the SEP/STP 101 includes a ⁇ 3 protocol entity 102 and a ⁇ 2 protocol entity 103. And the MTP1 protocol entity 104, the SG 105 includes a ⁇ 2 protocol entity 106, an MTP1 protocol entity 107, an M2UA protocol entity 108, an SCTP protocol entity 109, and an IP protocol entity 110, and the MTP1 protocol entity 104 and the MTP1 protocol entity 107 use time division multiplexing (TDM).
  • TDM time division multiplexing
  • the MGC 111 includes an MTP3 protocol entity 112, an M2UA protocol entity 113, an SCTP protocol entity 114, and an IP protocol entity 115, wherein the IP protocol entity 110 and the IP protocol entity 115 communicate using an IP protocol.
  • the M2UA protocol entity provides an MTP3 interface, and converts the upper-layer user MTP3 data message into an M2UA message and sends it to the M2UA protocol entity on the SG side, and simultaneously converts the M2UA message from the SG side into a message delivery part (MTP) primitive.
  • MTP message delivery part
  • the M2UA protocol entity provides an MTP3 interface, and converts the M2UA message from the MGC into an MTP primitive, and sends the MTP2 message to the M2UA protocol entity.
  • MTP message delivery part
  • Step S201 The MTP3 protocol entity sends an user data message to the M2UA protocol entity.
  • Step S202 the MGC side M2UA protocol entity converts the user data message into a MAUP (DATA) message of the M2UA protocol entity, and sends the message to the M2UA protocol entity on the SG side.
  • the M2UA protocol entity on the SG side further MAUP (DATA) The message is converted into a user data message and sent to the MTP2 protocol entity on the SG side;
  • Step S204 the SG side MTP2 protocol entity sends a user data indication message to the M2UA protocol entity.
  • Step S205 the SG side M2UA protocol entity converts the user data indication message into a MAUP (DATA) message, and sends the message to the M2UA protocol entity on the MGC side;
  • MAUP MAUP
  • Step S206 the M2UA protocol entity on the MGC side converts the MAUP (DATA) message into a user data indication message, and sends the message to the MTP3 protocol entity on the MGC side;
  • the query process includes the following steps:
  • Step S207 the MGC side MTP3 protocol entity sends a status query cancellation step S208 to the M2UA protocol entity, between the SG side M2UA protocol entity and the MGC side M2UA protocol entity.
  • the IP link is interrupted; (interruption is only a hypothetical situation)
  • Step S209 the SG-side MTP2 protocol entity continuously sends a user data indication message to the M2UA protocol entity, and the message is discarded by the M2UA protocol entity.
  • Step S210 the SG-side MTP2 protocol entity continuously sends a user data indication message to the M2UA protocol entity, and the message is discarded by the M2UA protocol entity.
  • the message is discarded by the M2UA protocol entity
  • Step S211 The status query message sent by the MTP3 protocol entity on the MGC side responds with a timeout, and the MTP3 protocol entity on the MGC side sets the link state to be unavailable, and starts the retrieval process.
  • the retrieving process is a process in which the protocol module MTP3 retrieves the undelivered user data message on the link that has been interrupted, and selects another good link to send the message again.
  • the MTP3 protocol entity detects that the underlying IP link is interrupted only through a scheduled link state query. The interval of this query is usually in the second level. The messages in this time range will be discarded by the M2UA protocol entity. The MTP3 protocol entity will stop sending messages only after the timer expires. The message loss will be large, and also This has caused a waste of resources.
  • the M2UA protocol entity cannot notify the MTP2 protocol entity that the IP link is interrupted. Therefore, the MTP2 layer still sends the message to the M2UA protocol entity, causing packet loss and resource loss. waste. However, MTP2 will be notified of the link interruption only after MTP3 has passed the timed link state detection. Summary of the invention
  • the technical problem to be solved by the present invention is to provide an optimization system based on an IP network signaling transmission protocol and an implementation method thereof, which solves the problem that the IP link interruption in the prior art causes packet loss of the Layer 2 user adaptation layer of the transmission signaling. Maximum guarantee that no packet loss occurs when the IP link is interrupted.
  • the present invention provides an optimization system based on an IP network signaling transmission protocol, including an MTP2 protocol entity on the SG side of the signaling gateway, an M2UA protocol entity and an SCTP protocol entity, and an MTP3 protocol on the MGC side of the media gateway controller.
  • Entity, M2UA protocol entity and SCTP protocol entity characterized in that
  • a sending unit is configured in the SCTP protocol entity on the SG side, and is configured to send an IP chain to the M2UA protocol entity on the SG side when the IP link between the SG side and the MGC side is interrupted.
  • Road interruption message is configured in the SCTP protocol entity on the SG side, and is configured to send an IP chain to the M2UA protocol entity on the SG side when the IP link between the SG side and the MGC side is interrupted.
  • a receiving unit and a processing unit are disposed in the M2UA protocol entity on the SG side, where the receiving unit is configured to receive the IP link interruption message sent by the SG side SCTP protocol entity; the processing unit is configured to receive according to the receiving unit The IP link interruption message is sent to the MTP2 protocol entity on the SG side, and the quit link service request message is used to stop the SG side MTP2 protocol entity from sending the data message;
  • a sending unit is configured in the SCTP protocol entity on the MGC side, and is configured to send an IP link interruption message to the M2UA protocol entity on the MGC side when the IP link between the SG side and the MGC side is interrupted;
  • a receiving unit and a processing unit are disposed in the M2UA protocol entity on the MGC side, where the receiving unit is configured to receive the IP link interruption message sent by the MTC side SCTP protocol entity; the processing unit is configured to receive according to the receiving unit
  • the IP link break message is sent to the MTP3 protocol entity on the MGC side to send an exit link service indication message, where the exit link service indication message is used to stop the MGC3 protocol entity from transmitting the data message.
  • a stopping unit is further disposed in the SG side MTP2 protocol entity, and is configured to
  • the quit link service request message sent by the processing unit in the M2UA protocol entity of the SG side stops sending a data message to the M2UA protocol entity; and the stop unit is also set in the MTP3 protocol entity of the MGC side, according to the MGC side.
  • the exit link service indication message sent by the processing unit in the M2UA protocol entity stops sending a data message to the M2UA protocol entity.
  • a triggering unit is further configured in the MGC-side MTP3 protocol entity, and is configured to start a switching rewind data retrieval process according to the exit link service indication message sent by the processing unit.
  • exit link service request message and the exit link service indication message carry an exit service cause value, indicating that the exit service cause is an IP link break.
  • the present invention further provides an optimized implementation method based on an IP network signaling transmission protocol, which is used for an MTP2 protocol entity, an M2UA protocol entity, an SCTP protocol entity, and a media gateway of the signaling gateway SG side.
  • MTP3 protocol entity on the MGC side of the controller A system consisting of an M2UA protocol entity and an SCTP protocol entity, including:
  • the SCTP protocol entity on the SG side sends an IP link interruption message when the IP link between the SG side and the MGC side is interrupted, and the M2UA protocol entity on the SG side receives the IP link interruption message. And sending an exit link service request message to the MTP2 protocol entity on the SG side according to the IP link interruption message, where the exit link service request message is used to stop the SG side MTP2 protocol entity from sending a data message;
  • the SCTP protocol entity sends an IP link interruption message when the IP link between the SG side and the MGC side is interrupted, and the M2UA protocol entity on the MGC side receives the IP link interruption message according to the IP address.
  • the link interruption message sends an exit link service indication message to the MTP3 protocol entity on the MGC side, where the exit link service indication message is used to stop the MGC side protocol entity from transmitting the data message.
  • the SG-side MTP2 protocol entity stops transmitting the data message after receiving the exit link service request message; and the MGC-side MTP3 protocol entity stops transmitting the data message after receiving the exit link service indication message.
  • the MGC-side MTP3 protocol entity starts a switch-back data back-fetching process according to the exit link service indication message.
  • exit link service request message and the exit link service indication message carry an exit service cause value, indicating that the exit service cause is an IP link break.
  • the system and method provided by the present invention timely notifies the Layer 2 user adaptation layer of the transmission signaling when the IP link is interrupted, thereby stopping the transmission of the data message and starting the data retrieval process, thereby avoiding the occurrence of packet loss.
  • 1 is an application model for implementing transparent transmission of data messages between a second layer of a message passing part and a third layer of a message passing part in the prior art
  • 2 is a flow chart of a conventional circuit domain MTP signaling message and an IP domain MTP signaling message forwarding and IP link interruption processing in the prior art
  • 3 is an application model for implementing transparent transmission of data messages between the second layer of the message passing part and the third layer of the message passing part in the present invention
  • FIG. 4 is a flow chart of a conventional circuit domain MTP signaling message and an IP domain MTP signaling message forwarding and IP link interruption processing in the present invention.
  • Preferred embodiment of the invention
  • the invention modifies the exit link service message (including the exit link service request message and the exit link service indication message) in the traditional No. 7 signaling network, and the modified exit link service message and the IP network SIGTRAN (letter)
  • the IP link interrupt message in the signaling protocol is combined to implement a 4-link link state processing mechanism on the IP interrupt, which reduces packet loss and resource occupation caused by the interruption of the IP link, and quickly recovers the service.
  • FIG. 3 shows an application model for implementing transparent transmission of data messages between the second layer of the message passing part and the third layer of the message passing part, including SEP/STP 101, SG 301 and MGC 309, wherein SEP/STP 101 includes an MTP3 protocol entity 102, an MTP2 protocol entity 103, and an MTP1 protocol entity 104.
  • the SG 301 includes an MTP2 protocol entity 302, an MTP1 protocol entity 107, an M2UA protocol entity 304, an SCTP protocol entity 307, and an IP protocol entity 110.
  • the MTP2 protocol entity 302 includes a stop unit 303, and the M2UA protocol entity 304 includes a receiving unit 305 and a processing unit 306.
  • the SCTP protocol entity 307 includes a transmitting unit 308.
  • the MGC 309 includes an MTP3 protocol entity 310, an M2UA protocol entity 312, an SCTP protocol entity 315, and an IP protocol entity 115.
  • the MTP3 protocol entity 310 includes a trigger unit 311 and a stop unit 317.
  • the M2UA protocol entity 312 includes a receiving unit 313 and a processing unit 314, SCTP.
  • the protocol entity 315 includes a transmitting unit 316.
  • the sending unit in the SG side SCTP protocol entity is configured to send an IP link interruption message to the SG side M2UA protocol entity when the IP link is interrupted;
  • the receiving unit of the M2UA protocol entity on the SG side is configured to receive an IP link interruption message sent by the sending unit of the SCTP protocol entity, and send the message to the processing unit of the M2UA protocol entity for processing;
  • the processing unit of the M2UA protocol entity on the SG side is mainly responsible for message construction, forwarding, and basic link state maintenance, and the message is an outgoing link service request sent by the MTP2 protocol entity.
  • the message, the quit link service request message is used to notify the SG side MTP2 protocol entity to stop sending data, and the message carries the exit service cause value, indicating that the reason for exiting the service is the IP link is broken;
  • the stopping unit of the MTP2 protocol entity on the SG side is configured to stop sending data to the M2UA protocol entity after receiving the exit link service request message sent by the M2UA protocol entity;
  • the sending unit in the SCTP protocol entity of the MGC side is configured to send an IP link interruption message to the M2UA protocol entity on the MGC side when the IP link is interrupted;
  • the receiving unit of the M2UA protocol entity on the MGC side is configured to receive the IP link interruption message sent by the SCTP protocol entity and send it to the processing unit of the M2UA protocol entity for processing; the processing unit of the M2UA protocol entity on the MGC side is mainly responsible for the message. Constructing, forwarding, and basic link state maintenance, the message is directed to the MTP3 protocol entity sending an exit link service indication message, the exit link service request message is used to stop the MGC side MTP3 protocol entity from transmitting data and triggering it to The link state is set to be unavailable, and the exit link service request message carries an exit service cause value, indicating that the exit service cause is an IP link disconnection;
  • the stopping unit of the MTP3 protocol entity on the MGC side is configured to stop sending data to the M2UA protocol entity after receiving the exit link service indication message sent by the M2UA protocol entity;
  • the triggering unit of the MTP3 protocol entity on the MGC side is configured to: after receiving the exit link service indication message sent by the M2UA protocol entity, set the link state to unavailable, and start the switchover reversal and return process.
  • FIG. 4 is a flowchart of a conventional circuit domain MTP signaling message and an IP domain MTP signaling message forwarding and IP link interruption processing according to the present invention, as follows:
  • Step S401 the MTP side protocol entity sends an user data message to the M2UA protocol entity.
  • Step S402 the MGC side M2UA protocol entity converts the user data message into a MAUP (DATA) message of the M2UA protocol entity, and sends the message to the M2UA protocol entity on the SG side.
  • the M2UA protocol entity on the SG side further MAUP (DATA)
  • the message is converted into a user data message and sent to the MTP2 protocol entity on the SG side;
  • Step S404 the SG side MTP2 protocol entity sends a user data indication message to the M2UA protocol entity.
  • Step S405 the SG side M2UA protocol entity converts the user data indication message into a MAUP (DATA) message, and sends the message to the M2UA protocol entity on the MGC side;
  • MAUP MAUP
  • Step S406 the M2UA protocol entity on the MGC side converts the MAUP (DATA) message into a user data indication message, and sends the message to the MTP3 protocol entity on the MGC side;
  • the IP link is interrupted, and the query process includes the following steps:
  • Step S407 the MGC side MTP3 protocol entity sends a status query message to the M2UA protocol entity.
  • the IP link is interrupted.
  • Step S409 the receiving unit of the M2UA protocol entity of the SG side receives the IP link interruption message sent by the SCTP protocol entity sending unit, and the processing unit of the M2UA protocol entity sends an exit link service request message to the MTP2 protocol entity;
  • Step S410 the receiving unit of the M2UA protocol entity of the MGC side receives the IP link interruption message sent by the sending unit of the SCTP protocol entity, and the processing unit of the M2UA protocol entity sends an exit link service indication message to the MTP3 protocol entity.
  • Step S411 the stopping unit of the MTP2 protocol entity on the SG side stops sending data to the M2UA protocol entity.
  • Step S412 the stopping unit of the MTP3 protocol entity on the MGC side stops sending data to the M2UA protocol entity, and the triggering unit of the MTP3 protocol entity on the MGC side sets the link state to be unavailable, and starts the retrieval process.
  • the system and the method provided by the present invention can notify the MGC side 3 protocol entity and the SG side MTP2 protocol entity, that is, the transmission signaling layer 2 user adaptation layer link, to stop sending data messages when the IP link is interrupted. Start the data retrieval process to minimize the loss of information and ensure that system resources are not wasted.

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

Abstract

L'invention concerne un système optimisé basé sur un protocole de transport de signalisation de réseau IP et son procédé d'obtention. Ledit système comprend une entité MTP2 (302), une entité M2UA (304) et une entité SCTP (307) dans le côté passerelle de signalisation et une entité MTP3 (310), une entité M2UA (312) et une entité SCTP (315) dans le côté contrôleur de passerelle média. Selon l'invention, une unité d'émission (308, 316) est configurée respectivement dans l'entité SCTP (307, 315) des deux côtés pour envoyer le message de rupture de liaison IP à l'entité M2UA (340, 312) des deux côtés lors d'une rupture de liaison IP. Une unité de réception (305, 313) est configurée dans l'entité M2UA (340, 312) des deux côtés pour recevoir le message de rupture de liaison IP envoyé par l'unité d'émission respective (308, 316). Une unité de traitement (306, 314) est configurée dans l'entité M2UA (304, 312) des deux côtés pour émettre séparément le message de demande de service de liaison de sortie indicatif du fait que l'entité MTP2 (302) de côté passerelle de signalisation arrête le transport de messages et un message d'indication de service de liaison de sortie indicatif du fait que l'entité MTP3 (310) de côté contrôleur de passerelle média arrête le transport de messages, sur la base du message de rupture de liaison IP reçu.
PCT/CN2007/003732 2007-04-24 2007-12-21 Système optimisé basé sur un protocole de transport de signalisation de réseau ip et son procédé d'obtention WO2008128405A1 (fr)

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CN 200710098675 CN101296170B (zh) 2007-04-24 2007-04-24 基于ip网络信令传输协议的优化系统及其实现方法
CN200710098675.4 2007-04-24

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CN102724072A (zh) * 2012-06-20 2012-10-10 华为技术有限公司 容灾倒换的方法、装置和系统
CN109661854A (zh) * 2016-09-08 2019-04-19 华为技术有限公司 无线网络中传输信令的方法和装置

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