WO2008000183A1 - Procédé, appareil et système de surveillance de la qualité de service de réseaux à commutateur logiciel - Google Patents

Procédé, appareil et système de surveillance de la qualité de service de réseaux à commutateur logiciel Download PDF

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Publication number
WO2008000183A1
WO2008000183A1 PCT/CN2007/070144 CN2007070144W WO2008000183A1 WO 2008000183 A1 WO2008000183 A1 WO 2008000183A1 CN 2007070144 W CN2007070144 W CN 2007070144W WO 2008000183 A1 WO2008000183 A1 WO 2008000183A1
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WIPO (PCT)
Prior art keywords
mgw
call
mgc
qost
test information
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PCT/CN2007/070144
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English (en)
Chinese (zh)
Inventor
Yigang Jia
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Huawei Technologies Co., Ltd.
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Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2008000183A1 publication Critical patent/WO2008000183A1/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
    • H04L65/80—Responding to QoS
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks

Definitions

  • the present invention relates to the field of packet switching network technology and the next generation network (NGN) technology, and specifically relates to a method, device and system for monitoring QoS (Quality of Service) of a softswitch bearer network.
  • NTN next generation network
  • SIP Session Initiation Protocol
  • IETF Internet
  • each tongue can be a variety of different types of content, which can be ordinary text data, digitally processed audio, video data, or data such as games. Great flexibility.
  • the SIP request message contains three elements: request line, header field, message body; SIP response message (Response) contains three elements: status line, header field, message body.
  • the request line and header field define the nature of the call based on the service, address, and protocol characteristics.
  • the message body is independent of the SIP protocol and can contain any content.
  • SIP defines the following signaling messages:
  • INVITE Invite Signaling Message: Used to invite users to join the call;
  • BYE Termination Signaling Message: Used to terminate the call progress between two users in a call;
  • OPTIONS Used to request information about server capabilities;
  • CANCEL Chip Signaling Message: Used to cancel a request that has been sent but has not ended in the end;
  • ACK Acknowledgement Signaling Message: Used to confirm that the client has received the final response to the INVITE;
  • REGISTER Used to provide a map for address resolution, let the server know The location of other users;
  • INFO Session Information Signaling Message: Used to pass various information between session participants in a session.
  • SIP signaling messages The following are examples of several specific SIP signaling messages:
  • the SIP signaling message must contain the following six header fields: Via: Describes the path through which the request message passes.
  • Max-Forwards Used to limit the number of points or maximum number of forwards a request is transmitted to its destination.
  • Call-ID A unique identifier used to distinguish between different tongues.
  • the H.248 protocol is a media gateway control protocol proposed by ITU-T (International Telecommunication Union) in 2000, also known as MeGaCo, which is based on the earlier MGCP (Media Gateway Control Protocol) protocol.
  • the H.248/MeGaCo protocol is used to connect the MGC (Media Gateway Controller) and the MGW (Media Gateway) to the media gateway and the media gateway controller and the media gateway control. Between the H.248/MeGaCo terminal and the important protocol that the media gateway controller should support.
  • the connection model defined by the H.248 protocol includes two main concepts of termination and context.
  • a terminal is a logical entity in an MGW that can send and receive one or more media.
  • a terminal belongs to and can only belong to one association, and can represent a time slot, an analog line, and an RTP (real time protocol) stream.
  • Terminal types mainly include semi-permanent terminals (TDM channels or analog lines, etc.) and temporary terminals (such as RTP streams for carrying voice, data and video signals or various mixed signals).
  • Terminal characteristics are represented by attributes, events, signals, statistics, etc.
  • a package concept is introduced in the protocol, and various characteristic parameters of the terminal are combined into packets.
  • An association is a connection between terminals that describes the topology relationship between terminals and the parameters of media mixing/exchange.
  • a message is a unit of information sent by a protocol.
  • a message contains a message header and a version number, and the message header contains the sender's ID.
  • the transactions in the message are independent of each other and can be handled independently.
  • the encoding format of the message is text format and binary format.
  • the MGC must support both formats, and the MGW can support either format.
  • H.248 completes the operation between the terminal and the association through eight commands: Add, Modify, Subtact, Move, AuditValue, AuditCapability, Notify and ServiceChange. To complete the establishment and release of the call.
  • the MGW initiates a call, the MGC establishes a new association, and uses the Add command to add the two terminals RTP stream and analog line respectively to the association.
  • the MGC uses the Subtract command to delete the terminal from the association. Release resources. Use the Modify command to modify the properties and signal parameters of the terminal.
  • the Move command is used to move a terminal from one association to another; the AuditValue command returns the current state of the terminal feature; the AuditCapabilities command returns the capability set of the terminal feature; and the Notify command allows the MGW to notify the MGC of the detected event.
  • Softswitch Network architecture is a well-respected whole-generation multimedia service solution for network convergence. It has the characteristics of layering, call control and bearer separation, rapid development of services, and centralized deployment of services. It includes various services such as PSTN (Public Switched Telephone Network) voice, wireless voice, basic data, and multimedia data.
  • PSTN Public Switched Telephone Network
  • the core layer in the softswitch network that is, the bearer network part is the packet switching network, which mainly adopts the IP bearer mode.
  • QoS of IP bearer mode is one of the hot and difficult issues in the telecom industry. SIP is the most promising protocol system. Although it defines a series of specifications for guaranteeing QoS in IP bearer mode, it can only guarantee the progress of a single call process. It cannot be used to test and monitor the QoS of the softswitch bearer network. The QoS of the softswitch bearer network makes real-time service adjustments.
  • the embodiments of the present invention provide a method and a device for monitoring QoS of a softswitch bearer network, which can know the QoS of the softswitch network and provide a basis for real-time adjustment of services according to QoS conditions.
  • the embodiment of the invention provides a method for monitoring the quality of service of a softswitch bearer network, including the following steps:
  • the first MGC collects service quality test information, including querying the first MGW for the QOST call. Called test information.
  • the embodiment of the invention further provides an apparatus for monitoring the quality of service of the softswitch bearer network, comprising: a call indication unit, configured to instruct the MGW to establish a QOST call, the indication comprising indicating that the first MGW establishes a QOST call with the second MGW;
  • test information unit configured to collect service quality test information, where the test information includes
  • ⁇ MGW queries the obtained test information of the QOST call.
  • the device for monitoring the quality of service of the softswitch bearer network includes: a call setup unit, configured to establish a QOST call with the second MGW according to the indication of the MGC; and a test unit, configured to be used on the QOST call Performing packet interaction with the second MGW; the query response unit is configured to feed back test information of the QOST call according to the query instruction of the MGC.
  • the embodiment of the present invention provides a system for monitoring the quality of service of a softswitch bearer network, including: a first MGC, configured to send, to a second MGC, a call setup request for establishing a QOST call with a second MGW, according to a response indication of the second MGC
  • the first MGW establishes a QOST call with the second MGW; collects the quality of service test test information of the QOST call to the first MGW and to the second MGW through the second MGC;
  • a second MGC configured to, according to the QOST call setup request of the first MGC, instruct the second MGW to establish a QOST call with the first MGW; and query the second MGW for the test information of the QOST call and send the test information to the first MGC;
  • a first MGW configured to establish a QOST call with the second MGW according to the indication of the first MGC, perform packet interaction on the QOST call, and report test information of the QOST call to the first MGC;
  • the second MGW is configured to establish a QOST call with the first MGW according to the indication of the second MGC, perform packet interaction on the QOST call, and report test information of the QOST call to the second MGC.
  • the technical solution of the embodiment of the present invention can perform QoS test between two gateways in the softswitch bearer network, so as to timely grasp the QoS fluctuation of the softswitch bearer network; and provide real-time service adjustment according to the QoS condition.
  • QoS test between two gateways in the softswitch bearer network, so as to timely grasp the QoS fluctuation of the softswitch bearer network; and provide real-time service adjustment according to the QoS condition.
  • FIG. 1 is a flowchart of performing QoS testing between two media gateways in a softswitch bearer network according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a specific signaling message when performing QoS testing between two media gateways in a softswitch bearer network according to an embodiment of the present invention
  • FIG. 3 is a flowchart of using the INVITE and the 18X for offer/answer negotiation in the process of performing QoS testing between two media gateways in a softswitch bearer network according to an embodiment of the present invention
  • FIG. 4 is a flow chart of routing transit through a media gateway controller during a QoS test between two media gateways in a softswitch bearer network according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of Embodiment 1 of a system for monitoring quality of service of a softswitch bearer network according to the present invention
  • FIG. 6 is a schematic structural diagram of Embodiment 1 of a system for monitoring quality of service of a softswitch bearer network according to the present invention.
  • the media gateway controller may use the session initial protocol signaling message to perform information interaction, and the media gateway controller and the media gateway
  • the media gateway control protocol (which may be the H.248 protocol or the MGCP protocol) may be used for information interaction.
  • the method includes the steps of: the first media gateway controller to the first media The gateway sends a bearer request message for performing the quality of service test, and sends a call for quality of service testing to the second media gateway controller by using the initial protocol signaling message; the second media gateway controller sends the quality of service to the second media gateway. Testing the bearer request message; the first media gateway interacts with the second media gateway to perform the media data packet; the first media gateway controller or the second media gateway controller collects and reports the service quality of the first media gateway and the second media gateway Test information.
  • FIG. 1 and 2 are flowcharts of performing QoS testing between two media gateways of the softswitch bearer network of the present invention. A complete embodiment of the present invention will be described in detail below with reference to FIG. 1 and FIG.
  • Step 1 MGC A (first media gateway controller) receives the QoS test indication of the network management device.
  • a (first media gateway) establishes an IP bearer for QoS testing, and MGWA returns an ADD REPLY response.
  • Step 3 MGC A sends a SIP protocol INVITE signaling message (invitation signaling message) to MGC B (second media gateway controller) to establish a call, where INVITE carries SDP (Session Description Protocol) packet and QOST extension package, QOST extension package Used to indicate that this call is a QoS test call.
  • INVITE carries SDP (Session Description Protocol) packet and QOST extension package, QOST extension package Used to indicate that this call is a QoS test call.
  • Step 4 MGC B returns a SIP protocol 100 signaling message (temporary response signaling message), confirming receipt of the INVITE signaling message.
  • Step 5 The MGC B parses the SDP packet and the QOST extension packet carried by the received INVITE signaling message, where the QOST extension packet indicates to establish a call for performing QoS test; if the MGC B does not support the QOST extension packet, sends the SIP to the MGC A.
  • the protocol 415 signaling message is rejected; if the MGC B supports the QOST extension packet, the ADD message is used to request the MGW B (second media gateway) to establish an IP bearer for QoS testing, and the MGW B returns an ADD REPLY response.
  • Step 6 MGC B returns a 200 OK message (response signaling message) to MGC A.
  • Step 7 MGC A sends the remote MGW B address information to MGW A by using the MOD message (modified message) in the H.248 protocol, requests MGW A to establish the bearer, and MGW A returns MOD REPLY (modification response message).
  • Step 8 MGC A returns an ACK (Acknowledgement Response Signaling Message) to MGC B, and confirms the received 200 OK.
  • ACK Acknowledgement Response Signaling Message
  • Step 9 MGC A receives the QoS test information indication from the network management device.
  • Step 10 The MGC A sends a request to the MGC B, where the sending request may be a SIP protocol OPTION signaling message (query signaling message), or may be a SIP protocol INFO signaling message (session information signaling message), carrying the QOST extended packet. , request MGC B to return QoS test information.
  • SIP protocol OPTION signaling message query signaling message
  • SIP protocol INFO signaling message session information signaling message
  • Step 11 MGC A and MGC B query MGW A and MGW B for QoS test information using AUDIT VALUE (audit message) in H.248 protocol, respectively.
  • MGW A and MGW B return QoS test using AUDIT VALUE ACK (audit response message). information.
  • Step 12 The MGC B returns a 200 OK signaling message to the MGC A, which carries the QOST extension packet, and the content is the QoS test information of the MGW B.
  • the MGC A reports the QoS test signal to the network management device.
  • Step 13 The network management device instructs the MGC to release the call from MGW A to MGW B.
  • Step 14 MGC A sends a SIP protocol BYE signaling message (terminating signaling message) to MGC B, carries the QOST extension packet, and requests MGC B to return QoS test information.
  • SIP protocol BYE signaling message terminatating signaling message
  • Step 15 MGC A sends the SUB message in the H.248 protocol to the MGWA (remove the message).
  • MGC B sends a SUB message to MGW B, requests MGW A and MGW B to release the bearer respectively, and returns QoS test information; MGW A and MGW B respectively use SUB REPLY message (removal response message) in H.248 protocol to MGC A And MGC B returns QoS test information.
  • Step 16 MGC B returns 200 OK, which carries the QOST extension package, and the content is the QoS test information of MGW B.
  • Step 17 MGC A uploads QoS test information to the network management device.
  • the ADD message uses the SIGNAL descriptor, and a QOST extension is added to deliver the event (QOST event) indicating that the QoS test was performed.
  • QOST event the event
  • other packages can also be extended to deliver QOST events.
  • Packet ID bqt [temporarily defined as 0X00A1. Note: needs to be registered with IANA]
  • MGC A and MGC B can carry the AUDIT VALUE request with the statistics.
  • MGW A and MGW B use Statistics to carry QoS test information in AUDIT VALUE ACK, for example:
  • Nt/dur 40000 ; milisecond, call current duration
  • step 15 MGC A and MGC B carry Statistics in the SUB message, and MGWA and MGW B use Statistics to carry QoS test information in SUB REPLY.
  • the SIP protocol INVITE signaling message carries an SDP (Febrication Description Protocol) packet and a QOST (Quality of Service Test) extension packet for transmitting information between MGC A and MGC B.
  • SDP Fracation Description Protocol
  • QOST Quality of Service Test
  • the QOST extension package can have the following format:
  • Unsigned int Duration milisecond the current duration of the call where unsigned char Spare[3] is the reserved field.
  • the MGC that initiates the QoS test information call can be packaged according to the QOST extended packet format using the MIME method. Later, when querying the QoS test information, the QoS test information can also be packaged according to the format using the MIME method.
  • the SDP negotiation between the two MGCs can be completed by using the INVITE signaling message and the 200 signaling message, but also the SDP negotiation can be performed according to various modes defined in RFC3261, and FIG. 3 shows the use of the INVITE signaling message.
  • the route relay of the SIP protocol INVITE signaling message can be implemented by reconfiguring and transmitting the INVITE signaling message by the MGC implementing the routing function.
  • FIG. 4 is a flow chart of the situation.
  • MGWA and MGW B can be controlled by the same MGC.
  • the message interaction process between MGC A and MGC B in the above process can be omitted.
  • the ordinary call with the MGW B can be established by the MGW A, that is, for the MGC B and the MGW B, the call is not an unknown QOST call but a known call.
  • the MGC A can query the MGWA for the statistical information of the interactive data packet on the call, and obtain the QOST test information.
  • the storage medium may be a read only memory, a random access memory, a magnetic disk, an optical disk, or the like.
  • the structure of the first embodiment of the softswitch bearer network monitoring system of the present invention is as shown in FIG. 5.
  • the first MGW 300 and the second MGW 400 have the same MGC, that is, the first MGC 100.
  • the first MGC 100 includes a call indication unit 110 and a test information unit 120, and may further include a release indication unit 130.
  • the first MGW 300 includes a call setup unit 310, a query response unit 320, and a test unit 340, and may further include a call release unit 330.
  • the second MGW 400 includes a call setup unit 410, a query response unit 420, and a test unit 440, and may further include a call release unit 430.
  • the call indication unit 110 of the first MGC 100 is configured to instruct the MGW to establish a QOST call
  • the test information unit 120 is configured to collect the quality of service test information
  • the release indication unit 130 is configured to instruct the MGW to release the QOST call, and query the MGW for the released QOST. Test information for the call.
  • the call establishing unit 310 of the first MGW 300 is configured to establish a QOST call with other MGWs according to the indication of the MGC, and the testing unit 340 is configured to perform data packet interaction with the opposite MGW on the QOST call, and the query response unit 320 is configured to perform the query according to the MGC.
  • the functions of the units in the second MGW 400 are the same as those in the first MGW 300 and are not repeated.
  • a QOST test is performed between the first MGW 300 and the second MGW 400 whose first MGC 100 indicates its control.
  • the call indication unit 110 of the first MGC 100 may include a first MGW indication module, an address information module, and a second MGW indication module, which is instructed by the first MGW indication module to establish the call setup unit 310 of the first MGW 300.
  • the QOST call bearer, the second MGW indication module instructs the call setup unit 410 of the second MGW 400 to establish a QOST bearer; after receiving the return information of the second MGW 400, the address information module of the call indication unit 110 will be the second MGW 400.
  • the address information is output to the call setup unit 310 of the first MGW 300, and the establishment of the QOST call is completed by the call setup units of the two MGWs.
  • the test unit 340 of the first MGW 300 interacts with the test unit 440 of the second MGW 400 on the established QOST call.
  • the test information unit 120 of the first MGC 100 includes a first MGW query module and a second MGW query module.
  • the two query modules respectively send the query response unit 320 to the first MGW 300.
  • the query response unit 420 of the second MGW 400 sends Querying the command, the two query response units respectively return the test information of the QOST call on the MGW to the test information unit 120 of the first MGC 100.
  • the release instructing unit 130 of the first MGC 100 transmits an instruction to release the call to the call release unit 330 of the first MGW 300 and the call release unit 430 of the second MGW 400, respectively, and the two call release units respectively release the MGW.
  • the QOST call returns the test information of the QOST call on the MGW to the release indication unit 130 of the first MGC 100.
  • the structure of the second embodiment of the softswitch bearer network monitoring system of the present invention is as shown in FIG. 6.
  • the first MGW 300 and the second MGW 400 have respective MGCs, which are a first MGC 100 and a second MGC 200, respectively.
  • the structure of the first MGW 300 and the second MGW 400 is the same as that in the first embodiment, and the description is not repeated in this embodiment.
  • the first MGC 100 includes a call indication unit 110, a test information unit 120, a call request unit 140, and a response receiving unit 150, and may further include a release instructing unit 130 and a release requesting unit 160.
  • the second MGC 200 includes a call instructing unit 210, a test information unit 220, and a call answering unit 250, and may further include a release instructing unit 230 and a release response unit 260.
  • a QOST test is performed between the first MGW 300 controlled by the first MGC 100 and the second MGW 400 controlled by the second MGC 200.
  • the call indication unit 110 of the first MGC 100 may include a first MGW indication module and an address information module, and the first MGW indication module instructs the call setup unit 310 of the first MGW 300 to establish a QOST call bearer;
  • a call request unit 140 of the MGC 100 transmits a QOST call setup request to the second MGC 200 to request a QOST call with the second MGW 400.
  • the call answering unit 240 receives the QOST call setup request of the first MGC 100, and the call indication unit 210 instructs the call setup unit 410 of the second MGW 400 to establish a QOST bearer and returns a call setup response to the first MGC 100.
  • the response receiving unit 150 of the first MGC 100 After receiving the QOST call setup response returned by the second MGC 200, the response receiving unit 150 of the first MGC 100 outputs the address information of the second MGW 200 to the address information module of the call indication unit 110; the address information module sets the second MGW 400
  • the address information is output to the call setup unit 310 of the first MGW 300, and the establishment of the QOST call is completed by the call setup units of the two MGWs.
  • the test unit 340 of the first MGW 300 interacts with the test unit 440 of the second MGW 400 on the established QOST call.
  • the test information unit 120 of the first MGC 100 in this embodiment includes an MGW query module and check The requesting module, the test information unit 220 of the second MGC 200 includes a query response module and an MGW query module.
  • the MGW query module of the test information unit 120 sends a query instruction to the query response unit 320 of the first MGW 300, and the query response unit 320 of the first MGW 300 returns the test information of the QOST call to the test information unit 120.
  • the MGW query module at the same time, the query request module of the test information unit 120 sends a query request to the second MGC 200.
  • the query response module of the test information unit 220 instructs the MGW query module to send a query instruction to the second MGW 400; the query response unit 420 of the second MGW 400 returns the test information of the QOST call to The MGW query module of the test information unit 220; the query response module of the test information unit 220 carries the test information output by the MGW query module in the query response, and sends the test information to the test information unit 120 of the first MGC 100.
  • the release instructing unit 130 of the first MGC 100 transmits a release call instruction to the call release unit 330 of the first MGW 300; meanwhile, the release request unit 160 of the first MGC 100 transmits a QOST call release request to the second MGC 200. .
  • the call release unit 330 of the first MGW 300 releases the QOST call and returns the test information of the QOST call to the release instructing unit 130 of the first MGC 100.
  • the activation release instructing unit 230 instructs the second MGW 400 to release the QOST call.
  • the call release unit 430 of the second MGW 400 releases the QOST call and returns the test information of the QOST call to the release instructing unit 230 of the second MGC 200.
  • the release indication unit 230 of the second MGC 200 outputs the test information returned by the second MGW 400 to the release response unit 260, and the release response unit 260 carries the test information in the release response and transmits it to the first MGC 100.
  • the MGC may include each unit in the first MGC 100 and the second MGC 200. Call response unit 240 and release response unit 260.
  • the MGW only the first MGW and its MGC have the structure in the first embodiment, and the MGC and the MGW on the other end adopt the structure in the prior art.
  • the MGC of the first MGW can obtain the QOST test information from the first MGW.
  • the QoS test between the two media gateways in the softswitch bearer network can be monitored, so that the QoS fluctuation of the softswitch bearer network can be grasped in time, and the service adjustment can be made in real time.

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

Abstract

La présente invention concerne un procédé de surveillance et de test de la QOS (Quality Of Service = qualité de service) d'un réseau à commutateur logiciel. À cet effet, on établit une communication QOST (QOS Testing = test de qualité de service) entre la première MGW (Media Gateway = passerelle multimédia) et la deuxième MGW sur la base de l'indication du premier MGC (Media Gateway Controller = contrôleur de passerelle multimédia).La communication QOST permet alors l'échange de paquets de données. Pour recueillir l'information de tests de QOS, le premier MGC demande cette information à la première MGW. La présente invention permet ainsi de réaliser des tests de QOS entre deux passerelle dans un réseau à commutateur logiciel, ce qui permet d'obtenir à temps la fluctuation de la QOS, et d'exécuter à temps les réglages des services.
PCT/CN2007/070144 2006-06-23 2007-06-20 Procédé, appareil et système de surveillance de la qualité de service de réseaux à commutateur logiciel WO2008000183A1 (fr)

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CN108770011B (zh) * 2018-05-07 2021-07-02 数据通信科学技术研究所 基于专用媒体网关控制协议的网关自动化测试系统及方法

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