WO2014180410A1 - Procédé et appareil de mise en œuvre de contrôle de ressources de porteuse qos de session multimédia - Google Patents

Procédé et appareil de mise en œuvre de contrôle de ressources de porteuse qos de session multimédia Download PDF

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Publication number
WO2014180410A1
WO2014180410A1 PCT/CN2014/078695 CN2014078695W WO2014180410A1 WO 2014180410 A1 WO2014180410 A1 WO 2014180410A1 CN 2014078695 W CN2014078695 W CN 2014078695W WO 2014180410 A1 WO2014180410 A1 WO 2014180410A1
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WO
WIPO (PCT)
Prior art keywords
media
network element
function network
request message
authorization request
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PCT/CN2014/078695
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English (en)
Chinese (zh)
Inventor
朱欣欣
张丽
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中兴通讯股份有限公司
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Publication of WO2014180410A1 publication Critical patent/WO2014180410A1/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
    • H04L65/1016—IP multimedia subsystem [IMS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/24—Negotiation of communication capabilities
    • 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
    • H04L65/1066—Session management
    • H04L65/1069—Session establishment or de-establishment
    • 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
    • H04L65/1066—Session management
    • H04L65/1101—Session protocols
    • H04L65/1104—Session initiation protocol [SIP]

Definitions

  • the present invention relates to the field of IMS (IP Multimedia Core Network Subsystem), and particularly to implementing a QoS (Quality of Service) bearer resource. Control method and device.
  • IMS IP Multimedia Core Network Subsystem
  • QoS Quality of Service
  • Control method and device BACKGROUND
  • PSTN Public Switched Telephone Network
  • QoS has always been emphasized. Since the traditionally transmitted services are relatively simple and the network operating area is relatively simple, only a certain QoS is required for the transport layer. That's it.
  • the code stream transmitted in the Next Generation Network (NGN) can be low-speed, high-latency non-real-time data, which can be high-speed, low-latency multimedia streams, or real-time non-real-time data.
  • the coexistence of streams, the data streams of these different media require stricter requirements for end-to-end QoS in NGN.
  • the Rx reference point system reference framework for implementing QoS in IMS is shown in Figure 1.
  • the entire architecture includes UE (User Equipment), P-CSCF (Proxy Call Session Control Function) network element, and PCRF ( Policy and Charging Rule Function, Network Element, S-CSCF (Serving Call Session Control Function), and PCEF (Policy and Charging Enforcement Function)
  • UE User Equipment
  • P-CSCF Proxy Call Session Control Function
  • PCRF Policy and Charging Rule Function
  • Network Element Network Element
  • S-CSCF Serving Call Session Control Function
  • PCEF Policy and Charging Enforcement Function
  • IBCF Interconnection Border Control Function
  • I-CSCF Interrogating Call Session Control Function
  • MGCF Media Gateway Control Function
  • Functional entities such as network elements.
  • PCC Policy and Charging Control
  • the AF Application Function of the P-CSCF network element
  • SIP Session Initiation Protocol
  • SDP Session Initiation Protocol
  • the SDP information of the normal media session is mapped to the related stream information Service-Info-Status-AVP in the Diameter AAR request message, and the corresponding information is the media stream information controlled by the PCRF network element, and the PCRF network element binds the session according to the media stream information.
  • the generated PCC rules are sent to the PCEF network element through the Gx interface for resource reservation and authorization.
  • the former early media information that is, the SDP information carried by the SIP signaling, which is marked as "early session", also requires bearer resource control.
  • the P-CSCF network element when there is a session and an early session, the P-CSCF network element needs to perform two interactions with the PCRF network element to perform resource control on the media of the session and the early session respectively, and on the other hand, cause the message traffic in the network system. Additional overhead.
  • the IP-CAN network since the resource requirements for the session and the early session are respectively carried to the PCRF/PCEF network element by sending the Diameter AAR request message, the IP-CAN network (including the UE and the PCRF) also performs the resource application one by one, which means When the IP-CAN network reserves and allocates the resources for the first application, when the resources for subsequent re-application are insufficient, the previous resources need to be recovered.
  • the technical problem to be solved by embodiments of the present invention is to provide a method and system for implementing media QoS bearer resource control, which accurately identifies an SDP negotiation state of each media, and may have both an ordinary media session and an early media early session. Next, reduce the overhead of message traffic in the network system.
  • the technical solution adopted by the embodiment of the present invention is: the method for implementing media QoS bearer resource control, including: when a session is initiated, the proxy call session control function network element generates the authentication according to the session description protocol SDP negotiation state of the media required by the session.
  • the authorization request message is sent to the policy charging rule function network element.
  • the policy charging rule function network element determines whether to notify the policy charging execution function network element to reserve resources for the corresponding media according to the SDP negotiation status of the media in the authentication authorization request message.
  • Authorization Further, the proxy call session control function network element generates an authentication authorization request message according to the SDP negotiation status of the media, and specifically includes: the proxy call session control function network element adopts authentication and authorization after performing SDP negotiation on the calling side and the called side.
  • the parameters of the media component level of the request message respectively identify the negotiation status for each type of media, and then generate an authentication authorization request message including the SDP negotiation status of the media.
  • the policy charging rule function network element determines whether to notify the policy charging execution function network element to perform resource reservation and authorization on the corresponding media according to the SDP negotiation status of the media in the authentication authorization request message, which specifically includes: policy charging rule The function network element notifies the policy charging execution function network element to perform resource reservation and authorization on the negotiated media based on the SDP negotiation status of the media in the authentication authorization request message.
  • the method further includes: when the policy charging execution function network element performs resource reservation and authorization for the media, if the total resource requirement exceeds the capability of the system, the resource allocation and authorization fail.
  • the media includes: early media and/or common media; parameters of the media component level of the authentication authorization request message are: Modifying from a message level of the authentication authorization request message to a Service-Info-Status of the media component level. AVP parameter, or a parameter customized at the media component level of the authentication authorization request message.
  • the embodiment of the present invention further provides a system for implementing media QoS bearer resource control, including: a proxy call session control function network element, configured to generate an authentication authorization according to a session description protocol SDP negotiation state of a media required for the session when the session is initiated.
  • the request message is sent to the policy charging rule function network element.
  • the policy charging rule function network element is configured to determine whether to notify the policy charging execution function network element to perform resource pre-requiring on the corresponding media according to the SDP negotiation status of the media in the authentication authorization request message. Retention and authorization;
  • the policy charging execution function network element is set to accept the notification of the policy charging rule function network element, and perform resource reservation and authorization for the corresponding media.
  • the proxy call session control function network element is specifically configured to: after the SDP negotiation is performed on the calling side and the called side, the media component level parameter of the authentication authorization request message is used to identify the negotiation status for each type of media separately. And generating an authentication authorization request message including the SDP negotiation status of the media.
  • the policy charging rule function network element is specifically configured to: according to the SDP negotiation status of the media in the authentication authorization request message, notify the policy charging execution function network element to perform resource reservation and authorization on the negotiated media.
  • the policy charging execution function network element is specifically configured to: when resource reservation and authorization for the media, if the total resource requirement exceeds the capability of the system, the resource allocation and authorization fail.
  • the media includes: early media and/or common media; parameters of the media component level of the authentication authorization request message are: Modifying from a message level of the authentication authorization request message to a Service-Info-Status of the media component level. AVP parameter, or a parameter customized at the media component level of the authentication authorization request message.
  • the method and system for implementing media QoS bearer resource control according to the embodiment of the present invention can obtain common media at the same time by accurately identifying the negotiation state of the media in the authentication authorization request message.
  • the proxy call session control function network element can also implement media and early media QoS bearer resource reservation and authorization management through the same authentication and authorization request message, thereby reducing signaling between the network element and the network element, and as soon as possible Feedback on resource conditions optimizes the protocol process.
  • FIG. 1 is a schematic diagram of a reference frame of an Rx reference point system for implementing QoS in an IMS according to the prior art
  • FIG. 2 is a flowchart of a method for implementing media QoS bearer resource control according to a first embodiment of the present invention
  • FIG. 4 is a flowchart of control of bearer resources of the called side according to an application example of the present invention.
  • Step S101 When a session is initiated, the calling side and the called side perform SDP negotiation, The media QoS bearer resource control on one side may perform the following steps S102 to S103 respectively.
  • the media includes: Early media early session and/or normal media sessions.
  • the parameter of the media component level of the Diameter AAR message may be: from the message level of the Diameter AAR message to the Service-Info-Status-AVP parameter of the media component level, or in the Diameter
  • Step S103 The PCRF determines whether to notify according to the SDP negotiation status of the media in the Diameter AAR message.
  • the PCEF performs resource reservation and authorization for the corresponding media.
  • the PCRF according to the Diameter AAR message binding session, sends a corresponding PCC rule to the PCEF based on the SDP negotiation status of the media in the authentication authorization request message, and notifies the PCEF to perform resource reservation on the negotiated media. Retention and authorization. Since the generation of PCC rules is a well-known technique specified by the protocol in the process of media resource allocation and authorization, it will not be described in detail herein.
  • Step S104 The PCEF directly allocates and authorizes resources required by each media according to the PCC rules and the information described by the media component for the negotiated media. If the total resource requirement exceeds the capability of the system, the resource allocation and authorization fail.
  • Step S105 After the PCEF performs the resource allocation and the authorization operation on the negotiated media, the PCRF returns a bearer authentication response message, that is, a Diameter AAA message, to the P-CSCF, where the resource allocation and the authorization result are successful.
  • a bearer authentication response message that is, a Diameter AAA message
  • the second embodiment of the present invention corresponds to the method for implementing media QoS bearer resource control in the first embodiment.
  • the embodiment provides a system for implementing media QoS bearer resource control, which includes the following components: proxy call session control function.
  • the calling side and the called side perform SDP negotiation.
  • the components of the system perform the following functions:
  • the P-CSCF is configured to generate an authentication authorization request message, that is, a Diameter AAR message, according to the SDP negotiation status of the media required by the session, and send the signal to the PCRF; the media includes: early media early session and/or common Media session.
  • the P-CSCF identifies the negotiation status of each medium by using the parameters of the media component level of the Diameter AAR message, and then generates a Diameter AAR including the SDP negotiation status of the media.
  • the parameter of the media component level of the Diameter AAR message may be: from the message level of the Diameter AAR message to the Service-Info-Status-AVP parameter of the media component level, or in the Diameter
  • the PCRF is used to determine whether to notify the PCEF to perform resource reservation and authorization for the corresponding media according to the SDP negotiation status of the media in the Diameter AAR message. Specifically, the PCRF, according to the Diameter AAR message binding session, sends a corresponding PCC rule to the PCEF based on the SDP negotiation status of the media in the authentication authorization request message, and notifies the PCEF to perform resource reservation on the negotiated media. Retention and authorization. Since the generation of PCC rules is a well-known technique specified by the protocol in the process of media resource allocation and authorization, it will not be described in detail herein. Further, after the PCEF performs resource allocation and authorization operations on the negotiated media, the PCRF also returns a bearer authentication response message, that is, a Diameter AAA message, to the P-CSCF, where the resource allocation and authorization are successful.
  • a bearer authentication response message that is, a Diameter AAA message
  • PCEF used to accept the notification of the policy charging rule function network element, and perform resource reservation and authorization for the corresponding media. Specifically, the PCEF directly allocates and authorizes resources required by each media according to the PCC rules and the information described by the media components for the negotiated media. If the total resource requirements exceed the capabilities of the system, the resource allocation and authorization fail.
  • FIG. 3 is a bearer resource control process of the calling side user equipment, as follows: Step S301, the calling side UE initiates a call flow, and the SIP signaling includes SDP offer information. Step S302: When receiving the call, the P-CSCF maps the SDP offer information to the downlink information. Step S303, the P-CSCF forwards the call request message to the S-CSCF, and sends it to the called party by the S-CSCF. Step S304, the S-CSCF forwards the response message of the called side to the P-CSCF, and includes SDP answer information.
  • Step S305 When the P-CSCF receives the call, the SDP answer information is mapped to the uplink information.
  • the P-CSCF firstly sets the media component of the corresponding session in the Diameter AAR message generated according to the SDP information of the session, wherein the media component label starts from 1, and a parameter Service set according to the SDP negotiation state of the session is added to the media component.
  • Info-Status- AVP set to FINAL SERVICE INF0RMATI0N when the general SDP negotiation status is answer.
  • the media component of the corresponding early session is generated in the Diameter AAR request message, wherein the media component label starts from 1001, and a parameter Service-Info-Status is set in the media component according to the SDP negotiation state of the early session.
  • -AVP set to FINAL SERVICE INFORMATION when the general answer is sent to the PCRF network element to request resource authorization.
  • Step S307 The PCRF binds the session according to the information in the Diameter AAR message, generates a PCC rule, and notifies the PCEF to perform resource reservation and authorization only for the media in the media component that the Service-Info-Status-AVP is FINAL SERVICE INFORMATION.
  • Step S308 the PCRF pushes the PCC rule to the PCEF, and the PCEF no longer distinguishes the session and the early session from the applied resource according to the PCC rule, but directly allocates and authorizes the resources required by the media according to the information described by the media component.
  • Step S309 the result of the resource control performed by the PCRF according to the PCEF is sent to the P-CSCF through a Diameter AAA response message.
  • Step S310 the P-CSCF forwards the session response message to the calling side UE.
  • FIG. 4 is a bearer resource control procedure of the user equipment on the called side. Since the steps S401 to S410 are similar to the bearer resource control procedure on the calling side, they are not described in detail.
  • the service information of the session and the early session can be carried to the PCRF through a Diameter message interaction. But if you simply will session the business information of the P early session A Diameter AAR message is sent to the PCRF network element.
  • the SDP negotiation status of the session and the early session may be inconsistent. For example, the current session SDP status is answer and the early session status is offer.
  • the Diameter AAR request message level service. -Info-Status- AVP obviously cannot accurately identify the negotiation status.
  • the method and system for implementing media QoS bearer resource control in the embodiment of the present invention are applied to a call process in which bearer resources are controlled by an early media, and the P-CSCF of the user equipment visited the network passes the service information of the early media and the common media.
  • a Diameter AAR message is carried to the PCRF to uniformly generate PCC rules.
  • the PCEF only needs to reserve and authorize the required resources once, and achieve the purpose of controlling the QoS bearer resources of the IP multimedia subsystem, thereby reducing the number of network elements in the PCC structure.
  • the message interaction optimizes the protocol description process, so that the bearer resource control process performed in the early media has less impact on the performance of the system and increases the processing capability of the network.
  • the technical means and functions of the present invention for achieving the intended purpose can be more deeply and specifically understood by the description of the specific embodiments.
  • the accompanying drawings are only for the purpose of illustration and description, and are not intended to limit.
  • INDUSTRIAL APPLICABILITY The above technical solution provided by the present invention can be applied to a media service quality QoS bearer resource control process.
  • a proxy call By accurately identifying a media negotiation state in an authentication authorization request message, a proxy call can be performed when both normal media and early media exist simultaneously.
  • the session control function network element can also implement media and early media QoS bearer resource reservation and authorization management through the same authentication and authorization request message, reduce signaling between the network element and the network element, and provide feedback on the resource situation as soon as possible. Optimized protocol flow.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Business, Economics & Management (AREA)
  • General Business, Economics & Management (AREA)
  • Computer Security & Cryptography (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephonic Communication Services (AREA)

Abstract

La présente invention concerne un procédé et un appareil de mise en œuvre d'un contrôle de ressources de porteuse QoS de session multimédia. Le procédé comprend : lors de l'initiation d'une session, la génération, par un élément de réseau à fonction de contrôle de session d'appel de passerelle de procuration, d'un message de requête d'autorisation et d'authentification conformément à un état de négociation de protocole de description de session (SDP) de session multimédia requis par la session, et l'envoi du message de requête d'authentification et d'autorisation à un élément de réseau à fonction de règles de politique et de facturation ; et la détermination, par l'élément de réseau à fonction de règles de politique et de facturation et conformément à l'état de négociation de SDP de session multimédia, du fait qu'il faut ordonner, ou non, à un élément de réseau à fonction d'application de politique et de facturation d'exécuter une réservation et une autorisation de ressources associées à une session multimédia correspondante. Le système comprend : un élément de réseau à fonction de contrôle de session d'appel de passerelle de procuration, un élément de réseau à fonction de règles de politique et de facturation et un élément de réseau à fonction d'application de politique et de facturation. Selon la présente invention, en identifiant correctement un état de négociation de session multimédia dans un message de requête d'authentification et d'autorisation, des états de négociation de SDP de différentes sessions multimédias peuvent être identifiés correctement lorsque des informations de SDP de sessions multimédias communes et des informations de SDP de sessions multimédias préalables sont présentes en même temps, ce qui réduit un surdébit supplémentaire de trafic de messages dans un système de réseau.
PCT/CN2014/078695 2013-09-18 2014-05-28 Procédé et appareil de mise en œuvre de contrôle de ressources de porteuse qos de session multimédia WO2014180410A1 (fr)

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CN201310429148.2A CN104468481B (zh) 2013-09-18 2013-09-18 一种实现媒体QoS承载资源控制的方法及装置
CN201310429148.2 2013-09-18

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CN106921953B (zh) * 2015-12-24 2020-04-24 中国电信股份有限公司 一种差异化计费方法、lte网络系统及pcrf
CN107800543A (zh) * 2016-08-29 2018-03-13 中兴通讯股份有限公司 一种媒体协商状态设置、提取方法和装置
CN108259434B (zh) * 2016-12-29 2020-12-22 中国移动通信集团浙江有限公司 一种用户侧QoS保障能力的开放方法及服务器
CN110505653B (zh) * 2018-05-17 2021-01-22 电信科学技术研究院有限公司 一种服务质量控制的方法、设备及计算机存储介质
CN113286268B (zh) * 2021-05-28 2022-03-22 海能达通信股份有限公司 一种数据传输方法及系统

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