WO2009082933A1 - Procédé et appareil destinés à traiter une rupture de plan utilisateur sur la base d'un commutateur logiciel - Google Patents

Procédé et appareil destinés à traiter une rupture de plan utilisateur sur la base d'un commutateur logiciel Download PDF

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Publication number
WO2009082933A1
WO2009082933A1 PCT/CN2008/073558 CN2008073558W WO2009082933A1 WO 2009082933 A1 WO2009082933 A1 WO 2009082933A1 CN 2008073558 W CN2008073558 W CN 2008073558W WO 2009082933 A1 WO2009082933 A1 WO 2009082933A1
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WO
WIPO (PCT)
Prior art keywords
sent
media gateway
user plane
initialization
message
Prior art date
Application number
PCT/CN2008/073558
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English (en)
Chinese (zh)
Inventor
Hao Zhang
Wei Yu
Original Assignee
China Mobile Communications 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 China Mobile Communications Corporation filed Critical China Mobile Communications Corporation
Publication of WO2009082933A1 publication Critical patent/WO2009082933A1/fr

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    • 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
    • H04L65/102—Gateways
    • H04L65/1043—Gateway controllers, e.g. media gateway control protocol [MGCP] controllers
    • 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
    • H04L65/80—Responding to QoS

Definitions

  • the present invention relates to the field of network technologies, and in particular, to a user plane disconnection processing method and apparatus based on softswitch. Background technique
  • the third generation of the 3rd Generation Partnership Project (3GPP, 3rd Generation Partnership Project) began to introduce softswitches in the fourth version (R4, Release4), proposed a circuit-switched core network independent of the bearer, and moved the mobile switching center in the original circuit domain ( MSC, Mobile Switching Center) is separated into a mobile switching center server (MSC server, Mobile Switching Center server) and a media gateway (MGW, Media Gateway) to achieve separation of bearer and control.
  • MSC Mobile Switching Center
  • MGW Mobile Switching Center server
  • MGW Media Gateway
  • FIG. 1 it is a 3G R4 mobile softswitch network structure.
  • different transport layers can be supported in a bearer independent manner, such as an Internet (Internet Protocol), Asynchronous Transfer Mode (AM), or a time division between networks.
  • Multiplexed and multiplexer TDM, Time Division Multiplex and Multiplexer
  • the circuit domain core network is mainly composed of MSC Server, Gateway Mobile Switching Center Server (GMSC Server) and MGW, among which MSC Server can be implemented.
  • GMSC Server Gateway Mobile Switching Center Server
  • MGW Gateway Mobile Switching Center Server
  • GMSC Server is responsible for external public exchange in the circuit-switched subsystem Telephone network ( PSTN , Public Switched Telephone Network) or the integrated services of the Integrated Services Digital Network (ISDN), which mainly includes the call control and mobility management functions of the traditional gateway mobile switching center GMSC; the media gateway MGW completes the conversion processing of the media stream. It is capable of converting between the bearer channel of the circuit switched network and the media stream of the packet network.
  • PSTN Public Switched Telephone Network
  • ISDN Integrated Services Digital Network
  • Mc is the interface between the (G) MSC Server and the MGW.
  • the main function is to perform media control to implement the interaction between the soft switch and the media gateway, and complete functions such as bearer control and media gateway management.
  • Nc is the interface between the MSC Server and the (G)MSC Server. It mainly solves the call control between the control and the bearer separated softswitch, and uses the call control protocol that separates the call control from the bearer, such as the bearer-independent call control protocol. (BICC, Bearer Independent Call Control), Session Initiation Protocol (SIP-I); Nb is the interface between MGWs.
  • the main function is to use ATM or IP to carry the services of circuit domain, including voice and circuit domain. Data bearer business.
  • 3GPP defines a user plane control method and protocol NbUP on the Nb interface.
  • the NbUP protocol is located between the core network layer and the transport network layer to provide data transmission services for the core network layer.
  • two media gateways can be proved only when one media gateway MGW1 sends an NbUP Initialization Initialization message to another media gateway MGW2 and receives a response Initialization ACK message from the peer.
  • the user's face office is opened to the path, and the call can be connected normally. If the MGW1 does not receive the response message sent by the MGW2, it indicates that the NbUP initialization message sent by the MGW1 to the MGW2 fails to be sent, and the user plane-to-path failure between the two media gateways is faulty.
  • the Nb interface of the IP bearer uses the RTP protocol (Real-time Transport Protocol), and the related protection mechanism is not defined.
  • the media gateway MGW only informs the MSC. The server releases the call; when the user is disconnected, that is, when the path from the local media gateway to all other media gateways is unreachable, there is currently no effective sensing mechanism and countermeasures.
  • the invention provides a soft-switch based user plane disconnection processing method and device thereof, so that the local media gateway MGW can effectively detect the user plane disconnection.
  • the embodiment of the present invention provides a soft-switch-based user plane disconnection detection method, including the following steps: When the local media gateway detects that the initialization message sent to a media gateway in the peer media gateway group fails to be sent, the detection is in advance. In the set timing time, whether each initialization message sent to the peer media gateway group fails to be sent; when it is detected that each of the initialization messages fails to be sent, it is determined that the user plane is disconnected.
  • the process of detecting whether the sent initialization message fails to be sent specifically includes: determining, according to a preset detection time, whether an acknowledgement message corresponding to the sent initialization message is received; and determining that the initialization message is not received When confirming the message, determine the initialization of the send The message failed to be sent.
  • the information of the user plane disconnection includes identification information for identifying a user plane disconnection.
  • the information of the user plane disconnection is sent to the mobile switching center server through the Notify command in the H.248 protocol.
  • the preset timing time is obtained from the mobile switching center server when the local media gateway registers with the mobile switching center server.
  • the embodiment of the present invention further provides a soft-switch-based user plane disconnection processing device, including: a detecting sub-device, configured to detect whether a user plane is open; the detecting sub-device includes: a first detecting unit, Detecting whether the initialization message sent by the local media gateway to a media gateway in the peer media gateway group fails to be sent; the second detecting unit is configured to: when the first detecting unit detects that the sending initialization message fails to be sent, detecting In the preset timing, whether each initialization message sent by the local media gateway to the peer media gateway group fails to be sent; the determining unit, configured to detect, in the second detecting unit, that each of the initialization messages fails to be sent When it is determined, the user is disconnected.
  • a detecting sub-device configured to detect whether a user plane is open
  • the detecting sub-device includes: a first detecting unit, Detecting whether the initialization message sent by the local media gateway to a media gateway in the peer media gateway group fails to be sent
  • the first detecting unit specifically includes: a determining subunit, configured to determine, according to a preset detection time, whether an acknowledgement message corresponding to the sent initialization message is received; determining a subunit, where the determining result is When receiving the acknowledgement message corresponding to the sent initialization message, it is determined that the sent initialization message fails to be sent.
  • the second detecting unit specifically includes: a detecting subunit, configured to detect, according to a preset timing, whether an acknowledgment message of each initialization message sent by the local media gateway to the peer media gateway group is received; And determining, when the detection result is that the acknowledgment message corresponding to each of the sending initial messages is not received, determining that each of the sent initialization messages fails to be sent.
  • the reporting sub-device is further configured to report the information of the user's surface disconnection to the mobile switching center server when the detection result is that the user plane is disconnected.
  • the information of the user plane disconnection includes identification information for identifying a user plane disconnection.
  • the user-side disconnected information is reported to the mobile switching center server through the Notify command in the H.248 protocol.
  • the user plane disconnection processing device is disposed in the media gateway.
  • the method and device for processing the user plane disconnection based on the softswitch according to the embodiment of the present invention, by detecting whether the initialization message sent by the local media gateway to the peer media gateway fails to be sent, and detecting that the sending initialization message fails to be sent In the preset timing, detecting whether all the initialization messages sent by the local media gateway to other media gateways are failed to be sent, and if yes, determining that the user is disconnected, so that the local media gateway can effectively detect the user plane disconnection, Subsequent extraction of effective response measures provides the basis.
  • Figure 1 is a schematic diagram showing the structure of a 3G R4 mobile softswitch network
  • Figure 2 is an illustration of the initialization process of NbUP
  • FIG. 3 is a flowchart of a softswitch user plane disconnection processing method according to an embodiment of the present invention
  • FIG. 4 is a flowchart of details of a softswitch user plane disconnection processing method according to an embodiment of the present invention
  • FIG. 6 is a structural block diagram of a first detecting unit in a softswitch user plane disconnection detecting apparatus according to an embodiment of the present invention
  • 6b is a structural block diagram of a second detecting unit in a softswitch user plane disconnection detecting apparatus according to an embodiment of the present invention
  • FIG. 7 is a schematic structural diagram of a network of a 3G R4 softswitch network according to Embodiment 1 of the present invention
  • FIG. 8 is a schematic diagram of a basic principle of a user-disrupted road report based on softswitch according to an embodiment of the present invention
  • FIG. 9 is a flowchart of a softswitch-based user plane disconnection processing method according to an embodiment of the present invention
  • FIG. 10 is a structural block diagram of a softswitch-based user plane disconnection processing apparatus according to an embodiment of the present invention. detailed description
  • the embodiment of the present invention provides a method for processing a user plane disconnection based on a softswitch.
  • the basic idea of the solution is to detect whether the NbUP initialization message sent by the local media gateway to the peer media gateway fails to be sent, and the NbUP initialization message fails to be sent. In the case of preset timing If all the NbUP initialization messages sent by the local media gateway to other media gateways are detected, the user is disconnected, and the information about the user's face disconnection is reported to the corresponding mobile switching center server.
  • a flowchart of a softswitch user plane disconnection processing method includes the following steps:
  • the specific process of detecting may be: after the media gateway sends the NbUP initialization message to the peer media gateway, it determines whether a corresponding NbUP acknowledgement message is received in the preset detection time TMT (3GPP TS29.414), if received, It indicates that the NbUP initialization message is sent successfully, otherwise it indicates that the transmission failed.
  • TMT preset detection time
  • the softswitch-based user plane disconnection processing method provided by the invention further comprises the steps of:
  • S140 Report the user plane disconnection information to the MSC server.
  • the event that the user is disconnected is reported to the MSC server through the communication interface between the media gateway and the MSC server.
  • the communication interface between the media gateway and the MSC server reports the information of the user's disconnection to the MSC server through the Notify command of the H.248 protocol.
  • step S120 As shown in FIG. 4, the specific steps of step S120 provided by the present invention include:
  • S1202 Detecting, in the preset time range of the disconnection detection timer, whether all NbUP initialization messages sent by the media gateway to other media gateways are failed to be sent.
  • the present invention provides a softswitch-based user plane disconnection processing device for implementing the technical solution.
  • the detection sub-device is included: a first detecting unit 110, configured to: Detecting the local media gateway to send to a media gateway in the peer media gateway group Whether the sent NbUP initialization message fails to be sent; the second detecting unit 120 is configured to detect, when the first detecting unit 110 fails to send the sent NbUP initialization message, that the local media gateway is opposite to the opposite end within a preset timing time. Whether the NbUP initialization message sent by the media gateway group fails to be sent; the determining unit 130 is configured to determine that the user plane is disconnected when the second detecting unit 120 detects that each NbUP initialization message fails to be sent.
  • the softswitch-based user plane disconnection processing device further includes: a reporting sub-device 140, configured to report the information of the user's surface disconnection to the mobile switching center service when the determining unit 130 determines that the user plane is disconnected
  • the first detecting unit 110 specifically includes (as shown in FIG. 6a): the determining subunit 1101, configured to determine, according to a preset detection time, whether a confirmation message corresponding to the sent NbUP initialization message is received; determining the subunit 1102, When it is determined that the judgment result of the subunit 1101 is that the acknowledgment message corresponding to the sent NbUP initialization message is not received, it is determined that the sent NbUP initialization message is failed to be sent;
  • the second detecting unit 120 specifically includes (shown in FIG. 6b): the detecting subunit 1201 is configured to detect whether each NbUP sent by the local media gateway to the peer media gateway group is received within a preset timing time.
  • the confirmation message of the message is determined by the determining sub-unit 1202, for determining that each NbUP initialization message sent by the detection sub-unit 1201 is not received when the acknowledgment message of each NbUP initialization message is not received.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the network structure of the 3G R4 softswitch network provided by the embodiment of the present invention is as shown in FIG. 7.
  • the multiple MSC servers included in the 3G R4 softswitch network are exchanged through the BICC protocol, and the MSC Server and the media gateway MGW are passed.
  • the H.248 protocol interacts.
  • the method for performing user plane disconnection detection processing by the media gateway MGW1 under the MSC Server 1 will be described in detail below.
  • S1100 Detect whether the NbUP initialization message sent by the media gateway MGW1 to the peer media gateway fails to be sent.
  • the media gateway MGW1 Before the media gateway MGW1 sends a message to other media gateways in the softswitch network, it first sends an NbUP Init message. Only after receiving the NbUP Init ACK message sent by the peer end can the user plane between the two media gateways be connected. The normal connection call, if the peer message is not received, that is, the NbUP initialization message sent by the media gateway MGW1 to the peer media gateway fails to be sent, the user plane between the two media gateways is not connected, and the call cannot be normally continued. Call.
  • the media gateway MGW1 detects whether the NbUP Init message sent by the other media gateway fails to be sent, that is, whether the NbUP Init ACK message sent by the peer end is received after the NbUP Init message is sent to the other media gateway. It is assumed that the media gateway MGW1 detects that the NbUP Init ACK message sent back by the media gateway MGW5 is not received after the NbUP Init message is sent to the media gateway MGW5, and the media gateway MGW1 determines the NbUP that it sends to the media gateway MGW5. The initialization message failed to be sent.
  • the media gateway MGW1 detects whether the NbUP initialization message sent by itself to another media gateway fails to be sent, the media gateway detects whether the NbUP initialization message sent by itself to other media gateways is at least 15 seconds or more at a preset timing time. If the transmission fails, if not, it is determined that the user plane is not open; for example, if the media gateway MGW1 detects that the NbUP initialization message sent by the media gateway MGW5 fails to be sent, the disconnection detection timer is started; wherein the disconnection detection timer is The set detection time has been notified to the media gateway MGW1 by the MSC Server1 when the media gateway MGW1 registers with the MSC Server1.
  • the MSC Server tells the media gateway that the user plane disconnection processing method needs to be supported, and informs the NbUP initialization message if the user plane disconnection processing method is triggered. If all transmission fails, the MGW can determine that the user plane is disconnected.
  • the media gateway MGW1 After the disconnection detection timer is started, the media gateway MGW1 sends an NbUP Init message to the media gateways MGW3, MGW4, and MGW6, and the media gateway MGW1 receives the MGW4 and MGW6 echoes within the detection time range preset by the disconnection detection timer.
  • the NbUP Init ACK message the media gateway MGW1 determines that the user plane is not open.
  • step S1300 If the media gateway MGW1 detects that the NbUP initialization message sent by itself to the other media gateway fails to be sent within a preset timing, the MGW1 determines that the user plane is disconnected. For example, in step S1200, the media gateway MGW1 sends an NbUP Init message to the media gateways MGW3, MGW4, and MGW6 after the disconnection detection timer is started. The media gateway MGW1 is confiscated at the detection time preset by the disconnection detection timer.
  • S1400 When the media gateway MGW1 determines that the user plane is disconnected, the information about the user plane disconnection is reported to the mobile switching center server MSC Server1 to which the media gateway MGW1 belongs.
  • the media gateway MGW1 can carry the Network Failure event through the Notify command in the H.248 protocol to user plane.
  • the information of the disconnection is reported to the MSC Server1.
  • FIG. 8 is a schematic diagram of a basic principle of a user-offset on-the-road report based on softswitch provided by the present invention.
  • the basic idea is that when the media gateway detects that the user plane is disconnected, the network failure event of the user plane is passed through H.248.
  • the Notify command in the protocol is reported to the mobile switching center.
  • the Network Failure event is specified in the newly defined message packet Network Failure Package of the H.248 protocol.
  • a flow chart of a softswitch-based user plane disconnection processing method includes the following steps:
  • S220 The network failure event carried by the Notify command in the H.248 protocol is used to report the information of the user's disconnection to the mobile switching center server.
  • the definition of the newly defined message package in the H.248 protocol Network Failure Package includes:
  • Event descriptor parameters :
  • Type integer ( in 10 millisecond steps )
  • the Media Gateway Controller (MGC) that supports this package can be audited to determine whether the media gateway supports the package.
  • the MGC may choose to set a wire break detection timer including the maximum open circuit detection time on the root end of the media gateway.
  • the media gateway supporting the packet can start the media surface disconnection processing method at the appropriate time after receiving the relevant event. Once the media gateway detects the media surface disconnection, it sends a Notify message with the detected "open circuit nf" event to the MGC.
  • the present invention provides a softswitch user plane disconnection processing device for implementing the technical solution.
  • the present invention includes: a detecting unit 210, configured to detect whether a user plane is open;
  • the reporting unit 220 is configured to report the information of the user plane disconnection to the mobile switching center server when the detection unit 210 detects that the user plane is disconnected.
  • S2200 The network failure packet carried by the Notify command in the H.248 protocol is used to report the information of the user's disconnection to the mobile switching center server MSC Server1.
  • the MSC Server1 After receiving the Network Failure Package, the MSC Server1 learns the information about the user's disconnection, and thus can take measures such as backup route switching and failed route reselection.
  • the softswitch user plane disconnection processing method proposed by the embodiment of the present invention is used in an IP backbone network
  • the local MGW can effectively detect the user plane disconnection and report it to the communication control module through the management control information interface, thereby providing a basis for extracting relevant countermeasures.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Cette invention se rapporte à un procédé destiné à traiter une rupture de plan utilisateur sur la base d'un commutateur logiciel. Selon ce procédé : lorsque la passerelle multimédia (MGW) de l'extrémité locale détecte que l'envoi d'un message d'initialisation à une passerelle multimédia du groupe de passerelles multimédia de l'extrémité opposée est un échec, la passerelle multimédia de l'extrémité locale détecte si l'envoi de chaque message d'initialisation envoyé au groupe de passerelles multimédia de l'extrémité opposée est un échec au cours d'une période préréglée; lorsque l'envoi de chaque message d'initialisation est détecté comme un échec, le plan utilisateur est jugé comme ayant été rompu. Un appareil destiné à traiter une rupture de plan utilisateur sur la base d'un commutateur logiciel est fourni en conséquence. Grâce à la solution de l'invention, la MGW peut détecter la rupture de plan utilisateur et signaler le message de rupture au serveur MSC à temps afin de prendre des mesures de réponse effectives.
PCT/CN2008/073558 2007-12-19 2008-12-17 Procédé et appareil destinés à traiter une rupture de plan utilisateur sur la base d'un commutateur logiciel WO2009082933A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN 200710179931 CN101466103A (zh) 2007-12-19 2007-12-19 基于软交换的用户面断路检测、上报方法及其装置
CN200710179931.2 2007-12-19

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WO2009082933A1 true WO2009082933A1 (fr) 2009-07-09

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102724692A (zh) * 2011-03-31 2012-10-10 华为技术有限公司 呼叫处理方法、系统和移动交换中心服务器

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CN1452347A (zh) * 2002-04-20 2003-10-29 深圳市中兴通讯股份有限公司 一种检测媒体网关控制器与媒体网关间链路状态的方法
CN1867088A (zh) * 2005-05-18 2006-11-22 华为技术有限公司 一种媒体网关接口用户面协议初始化方法
CN101060517A (zh) * 2006-06-14 2007-10-24 华为技术有限公司 Ngn架构下实现随路信令状态一致性的方法

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Publication number Priority date Publication date Assignee Title
CN1452347A (zh) * 2002-04-20 2003-10-29 深圳市中兴通讯股份有限公司 一种检测媒体网关控制器与媒体网关间链路状态的方法
CN1867088A (zh) * 2005-05-18 2006-11-22 华为技术有限公司 一种媒体网关接口用户面协议初始化方法
CN101060517A (zh) * 2006-06-14 2007-10-24 华为技术有限公司 Ngn架构下实现随路信令状态一致性的方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102724692A (zh) * 2011-03-31 2012-10-10 华为技术有限公司 呼叫处理方法、系统和移动交换中心服务器

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