WO2007076720A1 - Procédé et dispositif de régulation de ressources média - Google Patents

Procédé et dispositif de régulation de ressources média Download PDF

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Publication number
WO2007076720A1
WO2007076720A1 PCT/CN2006/003818 CN2006003818W WO2007076720A1 WO 2007076720 A1 WO2007076720 A1 WO 2007076720A1 CN 2006003818 W CN2006003818 W CN 2006003818W WO 2007076720 A1 WO2007076720 A1 WO 2007076720A1
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WIPO (PCT)
Prior art keywords
media
resource
information
module
called terminal
Prior art date
Application number
PCT/CN2006/003818
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English (en)
Chinese (zh)
Inventor
Qi Zeng
Original Assignee
Huawei Technologies Co., Ltd.
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 Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2007076720A1 publication Critical patent/WO2007076720A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/82—Miscellaneous aspects
    • H04L47/824—Applicable to portable or mobile terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/15—Flow control; Congestion control in relation to multipoint traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/72—Admission control; Resource allocation using reservation actions during connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/24—Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]
    • 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

Definitions

  • the present invention relates to an IP Multimedia Subsystem (IMS), and more particularly to a method and device for controlling media resources in an IMS.
  • IMS IP Multimedia Subsystem
  • IMS is a multimedia subsystem defined in the 3GPP R5 phase. It uses the packet domain (PS) as its bearer channel for upper layer control signaling and media transmission, and introduces Session Initiation Protocol (SIP) as a service control protocol. It is easy to expand and has convenient media combination. It separates service control from bearer control to provide rich multimedia services.
  • PS packet domain
  • SIP Session Initiation Protocol
  • the main functional entities in IMS include call session control entities CSCF that control functions such as user registration and session.
  • P/I/S-CSCF home subscriber server HSS that centrally manages subscriber subscription data
  • AS application server
  • AS Application server
  • BGCF Breakout Gateway Control Function
  • MGCF Media Gateway Control Function
  • the prior art defines a mechanism for performing QoS resource reservation in the SIP session establishment process.
  • the user equipment UE
  • requests corresponding media parameters coding scheme, media type, bandwidth, etc.
  • the IMS session control authorizes the corresponding media parameters based on the user's personal service/media information and the applied local policy control.
  • the authorized parameters are returned to the UE for resource reservation for establishing a transport bearer.
  • the two UEs agree on the media combination used in the session and which encoding method to use through media negotiation.
  • an SDP offer/answer mechanism is currently used, which allows the UE to postpone the completion of the SIP session establishment until both parties successfully complete the resource reservation.
  • P-CSCF Proxy CSCF
  • P-CSCF performs QoS resources according to the result of negotiation Reserved, this reservation process is done through PDF (Policy Decision Function).
  • PDF Policy Decision Function
  • FIG. 1 it is a schematic diagram of a reservation process of a QoS resource in the prior art.
  • the process of performing resource reservation is independent of each other. The specific steps include:
  • Step 101 The session establishment request (INVITE) message initiated by the UE#1 carries the SDP (Session Descriptor Protocol) information, and the SDP information is used for formal media negotiation (the offer process).
  • SDP Session Descriptor Protocol
  • Steps 102-104 after receiving the 183 returned by the called party (the session is in progress), the P-CSCF starts the authentication of the QoS resource, and initiates an authentication request (Auth Request) to the PDF. After the authentication is passed, the PDF replies the acknowledgement (ACK). The message sends the relevant authentication token (Auth Token) to the P-CSCF.
  • Auth Request an authentication request
  • ACK acknowledgement
  • the P-CSCF brings the relevant authentication token to UE#1 (answer process) in 183.
  • UE#1 initiates the resource reservation process after receiving 183.
  • the resource reservation process is to interact with the underlying entity of the IP bearer access network.
  • the underlying entities of the IP bearer access network such as the SGSN/GGSN accessed by the UMTS and the BRAS accessed by the xDSL, are not shown in FIG.
  • Steps 106-107 after the called party's final response (200) comes back, the P-CSCF sends an Open Gate message to the PDF to approve the Open Gate for the QoS committed authorization resource to start the session.
  • the P-CSCF sends a 'Release Release' message to the PDF to release the associated QoS resources.
  • the embodiments of the present invention provide two methods for controlling media resources, which are used to reserve and manage resources occupied by early media in the IMS, and provide QoS guarantee for early media services.
  • an embodiment of the present invention further provides a media resource control apparatus.
  • the method for controlling the first media resource includes the following steps: the calling terminal and the called terminal perform the negotiation of the first media, and initiate the resource reservation of the first media after the negotiation is completed;
  • the media resource gating is turned on.
  • the second method for controlling a media resource includes the following steps: the calling terminal and the called terminal perform the first media negotiation; and the first media of the calling terminal and the called terminal in the negotiation process
  • the resource information is authenticated, and the media resource gating is opened in the authentication process;
  • the calling terminal and the called terminal respectively initiate resource reservation of the first media.
  • the first media resource control apparatus includes: a detection module, a resource opening module, and a resource reservation initiating module, where
  • a detecting module configured to detect first media negotiation result information of the calling terminal and the called terminal, and send an instruction for resource reservation to the resource reservation initiating module when detecting the information; Sustaining successful information, and when detecting the information, sending an instruction to the resource opening module to open the media resource gating;
  • a resource reservation initiating module configured to initiate a resource reservation operation of the first media according to the resource reservation instruction
  • the resource opening module is configured to initiate an operation of opening the media resource gating according to the instruction that the media resource is gated.
  • the second media resource control device includes: a detection module, a resource opening module, and a resource reservation initiating module, where a detecting module, configured to detect an authentication request message, and send an instruction for opening the media resource gating to the resource opening module when detecting the authentication request message; and further detecting the first of the calling terminal and the called terminal
  • the media negotiates the result information, and when the information is detected, sends an instruction for resource reservation to the resource reservation initiating module;
  • a resource opening module configured to initiate an operation of opening a first media resource gating according to an instruction that the media resource gating is turned on;
  • a resource reservation initiation module configured to initiate a resource reservation operation of the first media according to the resource reservation instruction.
  • the embodiment of the present invention implements the early media resource reservation under the gateway model and the application server model, and can open the media call on the PDF before the main called session is successfully established, so that the official call can be made in the main call.
  • the use of reserved early media resources for early media sessions ensures that QoS guarantees for services using early media, such as ring tones and color images, can also significantly improve the quality of these early media services.
  • the modification of the media resource can meet the needs of the early media service, and further guarantees the QoS of the early media service.
  • FIG. 1 is a schematic diagram of a media resource control process in an existing IMS
  • FIG. 2a is a schematic diagram of an early media QoS resource control process of a calling UE in a gateway model according to an embodiment of the present invention
  • 2b is a schematic diagram of an early media QoS resource control process of a called UE in a gateway model according to an embodiment of the present invention
  • FIG. 3a is a schematic diagram of an early media QoS resource control process of a calling UE in an application server model according to an embodiment of the present invention
  • FIG. 3b is a schematic diagram of an early media QoS resource control process of a called UE in an application server model according to an embodiment of the present invention
  • FIG. 3a is a schematic diagram of an early media QoS resource control process of a calling UE in an application server model according to an embodiment of the present invention
  • FIG. 3b is a schematic diagram of an early media QoS resource control process of a called UE in an application server model according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of an early media resource control device according to an embodiment of the present invention. detailed description
  • the QoS resource control of the early media is mainly based on two models, one is a gateway model, and the other is a server model.
  • the gateway model does not need to modify the protocol, but only regulates the behavior of the terminal based on the existing SIP offer/answer mechanism.
  • the offer/answer interaction performed before the final response of the INVITE message can be used to establish an early media session, and the early media session is terminated when the final response of NVITE is sent. If the final response is 200, then the early media session will be converted to the final formal, session. If this final response is non-200 type, then the early media session will be simply disconnected.
  • the gateway model requires that terminals and gateways preferably support reliable temporary response, PRACK, and UPDATE messages in the Session Description Protocol (SDP). At the same time, the terminal can send and receive media streams after completing a round of SDP negotiation.
  • SDP Session Description Protocol
  • the application server model extends the SIP protocol.
  • the User Agent Client (UAC, User Agent Client) enhances the early-session option tag and indicates to the User Agent Server (UAS, User Agent Server) that it supports early session preference types.
  • UAC User Agent Client
  • UAS User Agent Server
  • This early conversational propensity type negotiation also uses the offer/answer mode, which is independent of the offer/answer process of the formal session type (session disposition type).
  • an Early-sessions Option tag has been added to Require and Supported to indicate that the User Agent (UA) understands the type of propensity defined in the early-session.
  • the gateway model is relatively simple and has no impact on existing networks. However, the gateway model has a processing defect of FORKING and a defect in the ringback tone.
  • the application server model addresses two serious problems in the gateway model.
  • the gateway model requires the client to receive the media stream after completing a complete media negotiation offer/answer process, and in some applications it can also send the media stream. Moreover, the gateway model requires the application server to send media streams when it completes a complete media negotiation offer/answer, and in some applications it can also receive media streams. This means that the P-CSCF needs to turn on the gating when the UE resource reservation is successful, rather than waiting for the INVITE's final response 200 to come back and then turn it back on.
  • This embodiment describes an early media QoS resource control procedure under the gateway model.
  • FIG. 2 is a schematic diagram of an early media QoS resource control process of a calling UE in a gateway model according to an embodiment of the present invention, where specific steps include:
  • Steps 201-203 the calling UE#1 initiates a session establishment request (INVITE), which carries SDP information for early media negotiation.
  • This step is an offer process for early media negotiation.
  • Steps 204-208 the called UE returns a temporary response (183) for the INVITE, which carries the negotiation result of the early media resources. This step is the answering process for early media negotiations.
  • step 206-207 the calling party P-CSCF starts to perform QoS resource authentication after receiving the 183 response.
  • the calling party P-CSCF initiates an authentication request (Auth Request) to the PDF.
  • Auth Request an authentication request
  • the PDF reply ACK message brings back the relevant authentication token (Auth Token).
  • the P-CSCF brings the relevant authentication token to UE#1 in 183.
  • Steps 209-214, UE#1 initiates a QoS resource reservation process after receiving 183.
  • This resource reservation process is completed by interacting with the underlying entity of the IP bearer access network.
  • the underlying entities of the IP bearer access network such as the SGSN/GGSN accessed by the UMTS, the BRAS accessed by the xDSL, etc., are not shown in FIG.
  • Steps 215-220 After the QoS resource reservation initiated by UE#1 is successfully successful, a resource reservation success (UPDATE) message is sent to notify the called UE; the called UE returns a response 200 (OK) for the UPDATE message.
  • UPDATE resource reservation success
  • Step 221-222 after the calling party P-CSCF receives the response of the called UE to the UPDATE message, it sends an Open Gate message to the PDF to open the gate to start the early media session.
  • FIG. 2b an early media QoS resource control of a called UE in a gateway model according to an embodiment of the present invention is shown. Schematic diagram of the process, the specific steps include:
  • Step 301-305 after the called party P-CSCF receives the INVITE sent by the calling UE (which carries the SDP information used for early media negotiation), it generates a media authentication token (Auth Request) to the PDF request. After the request is passed, the PDF reply ACK message brings back the relevant authentication token (Auth Token). The P-CSCF brings the relevant authentication token to UE#2 in the INVITE request.
  • Auth Request media authentication token
  • the P-CSCF brings the relevant authentication token to UE#2 in the INVITE request.
  • Steps 306-316 the called UE#2 issues a temporary response (183) to the INVITE request, which carries the negotiation result ( answer ) of the early media resource, and then UE#2 initiates the QoS resource reservation process.
  • This resource reservation process is completed by interacting with the underlying entity of the IP bearer access network.
  • the underlying entities of the IP bearer access network such as the SGSN/GGSN accessed by the UMTS, the BRAS accessed by the xDSL, etc., are not shown in FIG.
  • step 309-310 after receiving the 183 from UE#2, the called party P-CSCF initiates a Modify message to the PDF to modify the QoS resource according to the answer status of the called party.
  • Steps 317-324 after the QoS resource reservation initiated by the UE#2 is successfully sent, a 200 (OK) response for the UPDATE request of the calling UE is sent.
  • step 323-324 after the called party P-CSCF receives the 200 (OK) response, it sends an Open Gate message to the PDF to open the session to start the early media session.
  • This embodiment describes an early media QoS resource control procedure under the gateway model.
  • the early media QoS resource control process of the calling UE in this embodiment is similar to the process shown in FIG. 2a in Embodiment 1, except that the calling UE#1 directly sets the related media resource to open when applying for the token. (implemented by message 206), so there is no need to open the gating message (message 221) by command to command the PDF to open the gating.
  • the early media QoS resource control process of the called UE in this embodiment is similar to the process shown in FIG. 2b in Embodiment 1, except that the called UE#2 directly sets the related media resource to open when applying for the token. (implemented by message 303), so there is no need to open the gating message (message 323) by command to command the PDF to open the gating.
  • message 303 the called UE#2 directly sets the related media resource to open when applying for the token.
  • This embodiment describes an early media QoS resource control procedure under the application server model.
  • the application server model extends the SIP protocol and adds an SDP for early sessions to SIP session messages.
  • This SDP is used solely for early media negotiation and also uses the offer/answer mechanism for media negotiation. Therefore, for the application server model, there may be two SDP message bodies in the session message, one for the early media session and one for the formal session, and the two SDPs are negotiated separately by the offer/answer mechanism.
  • the P-CSCF needs to consider the information of the two SDPs simultaneously when performing QoS resource reservation. Specifically, the P-CSCF sends the collection of the early media SDP and the official media SDP to the PDF at the time of the token application; and the offer/answer of the early media is completed each time before the final response (200) of the INVITE request is returned.
  • a message for modifying the media QoS resource is sent to the PDF to modify the used media resource; when the final response (200) is received, the P-CSCF sends a message (Modify) to modify the media QoS resource to the PDF,
  • the notification PDF sets the early media properties to unavailable and sets the official media to a usable state.
  • the formal media may also negotiate before receiving the 200. At this time, the revision of the official media should be recorded.
  • the formal media session is established, that is, when the final response 200 (INVITE) is received, the stored official media information is updated with the Modify message.
  • FIG. 3 a is a schematic diagram of an early media QoS resource control process of a calling UE in an application server model according to an embodiment of the present invention, where specific steps include:
  • Steps 401-403 the calling UE#1 initiates an INVITE request, which carries SDP information for formal media resource negotiation.
  • This step is an offer process for formal media negotiation.
  • Steps 404-408 the called party replies with a temporary response to the INVITE request (183), which carries the official media response information and the SDP information for the early media negotiation (the formal media answer and the early media offer process).
  • the calling party P-CSCF After receiving the 183 response, the calling party P-CSCF sends a collection of official media information and early media information to the PDF for QoS token application.
  • Steps 409-416, UE#1 replies to the PRACK request to implement an acknowledgment of the response to 183, the request carrying the answer information of the early media, and initiating the QoS resource reservation according to the QoS token.
  • UE#1 initiated funding
  • the source reservation process is to interact with the underlying entity of the IP bearer access network.
  • the underlying entities of the IP bearer access network such as the SGSN/GGSN accessed by the UMTS, the BRAS accessed by the xDSL, etc., are not shown in FIG. 3a.
  • Step 412-413 After receiving the PRACK from UE#1, the calling party P-CSCF sends a Modify message according to the answer to modify the QoS resource.
  • Steps 417-422 after the resource reservation is completed, UE#1 sends an UPDATE message indicating that the resource reservation is successful, and the called UE returns a 200 response message for the UPDATE message.
  • Step 423-424 when the calling party P-CSCF receives the response (200) of the called party UE for the UPDATE, it sends a gating message to the PDF to open the gating and starts the early media session.
  • the QoS resource modification of the subsequent early media negotiation and formal media negotiation is the same as the process described above before the final response (200) of the INVITE comes back.
  • Steps 428-430 when the calling party P-CSCF receives the final response 200 of the INVITE, sends a message (Modify) to modify the media QoS resource to the PDF, sets the early media attribute to an unavailable state, and sets the official media to be available. status.
  • a message Modify
  • UE#1 may not send the collection of the early media and the official media when applying for the token, but only use the formal media or only the early media to apply for the QoS token, and then through the Modify message (message 412) Modify the relevant media QoS resources.
  • the QoS requirements of the media and the early media are higher.
  • the media information is included in the authentication request message and sent to the PDF.
  • FIG. 3b is a schematic diagram of an early media resource control process of a called UE in an application server model according to an embodiment of the present invention, where specific steps include:
  • Steps 501-505 after the called party P-CSCF receives the INVITE sent by the calling party (which carries the SDP information used for the formal media negotiation), generates a media authentication token (Auth Request) to the PDF request. After the request is passed, the PDF reply ACK message brings back the relevant authentication token (Auth Token).
  • Auth Request media authentication token
  • Steps 506-508, the called UE#2 replies with a temporary response (183) to the INVITE request, which carries the response information of the official media and the SDP information (the answer of the official media and the offer of the early media) for the early media negotiation.
  • Steps 509-516 the calling UE sends a PRACK message carrying the answer information of the early media.
  • the called party P-CSCF After receiving the PRACK request, the called party P-CSCF sends the early media information to the PDF in the Modify message to notify it to modify the QoS resources.
  • UE#2 receives: 200 (OK) response upon PRACK request, and initiates QoS resource reservation according to QoS token.
  • the resource reservation process initiated by UE#1 is to interact with the underlying entity of the IP bearer access network.
  • the underlying entity of the IP bearer access network may be the SGSN/GGSN of the UMTS access or the BRAS of the xDSL access, etc., which is not shown in FIG. 3b. .
  • Steps 517-522 After the QoS resource reservation initiated by UE#2 is completed, UE#2 sends a 200 (OK) response of the UPDATE request.
  • Steps 523-527 when the called party P-CSCF receives the response (200) of the UE#2 to the UPDATE, it sends an open gating message to the P-CSCF to open the gating and starts the early media session.
  • multiple offer/answer processes may occur in succession before the final response (200) of the INVITE returns.
  • the subsequent QoS resource modification of the early media negotiation and formal media negotiation is the same as described above.
  • Steps 528-532 when the called party P-CSCF receives the final response 200 of the UE#2 for the calling INVITE, it needs to send a message (Modify) to modify the media QoS resource to the PDF, and set the early media attribute to an unavailable state. And make the official media available.
  • a message Modify
  • This embodiment describes an early media QoS resource control procedure under the application server model.
  • the process of the early media QoS resource reservation process of the calling UE in this embodiment is similar to the process shown in FIG. 3a in Embodiment 3, except that the calling UE#1 directly sets the related media resource to the requesting token.
  • Open (implemented by message 506) so that there is no need to open the gating message (message 523) by command to command the PDF to open the gating.
  • the early media QoS resource control process of the called UE in this embodiment is similar to the process shown in FIG. 3b in Embodiment 3, except that the called UE#2 directly sets the related media resource to open when applying for the token. (implemented by message 506), so there is no need to open the gating message (message 523) by command to command the PDF to open the gating.
  • UE#1 may not send the collection of early media and official media when applying for a token.
  • only QoS token requests were made using official media or only early media, and then the relevant media QoS resources were modified by Modify messages (message 412).
  • the information of the media with higher QoS requirements among the official media and the early media is included in the authentication request message and sent to the PDF.
  • Embodiments 3 and 4 of the above application server model only provide a process of resource reservation in the case where the negotiated QoS resource is different from the QoS resource determined when the authentication request is sent.
  • the P-CSCF sends a modification message to inform the PDF to reserve according to the negotiated resources.
  • the P-CSCF does not need to send a modification message.
  • the embodiment of the present invention proposes two early media resource control devices.
  • an early media resource control device is provided, and the device is located on a proxy server, such as a P-CSCF.
  • the device includes: a detection module, a resource opening module, and a resource reservation initiating module, where:
  • the detecting module is configured to detect the early media negotiation result information of the calling terminal and the called terminal, and send the resource reservation instruction to the resource reservation initiating module when detecting the information; And detecting, when the information is detected, sending a media resource gating open command to the resource opening module; the resource reservation initiating module is configured to initiate an early media resource reservation operation according to the resource reserved instruction; the resource opening module is configured to use The instruction of the media resource gating is initiated to initiate the operation of opening the media resource.
  • the device can also include a resource modification initiation module.
  • the calling terminal and the called terminal may also initiate subsequent early media negotiation after the early media resource reservation is successful.
  • the detecting module detects the subsequent media resource negotiation result information of the subsequent calling terminal and the called terminal, the resource is modified.
  • the initiating module sends a resource modification instruction; the resource modification initiating module initiates a resource modification operation of the early media according to the resource modification instruction.
  • the device can also include an authentication initiation module.
  • the detecting module sends an authentication command to the authentication initiation module when detecting the SDP information of the early media and the authentication token request message of the SDP information of the official media; the authentication initiation module initiates the authentication according to the authentication instruction, and SDP information from early media or The SDP information of the official media, or a collection of both, is carried in the authentication request message.
  • another resource control device of an early media provided by the embodiment of the present invention includes: a detection module, a resource opening module, and a resource reservation initiating module, where:
  • the detecting module is configured to detect an authentication token request message sent by the user terminal, and send an instruction for opening the media resource gating to the resource opening module when detecting the authentication token request message; and is further configured to detect the calling terminal and the Calling the early media negotiation result information of the terminal, and sending the resource reservation instruction to the resource reservation initiating module when detecting the information;
  • the resource opening module is configured to initiate the opening of the early media resource door according to the instruction of the media resource gating opening The operation of the control;
  • the resource reservation initiation module is configured to initiate a resource reservation operation of the early media according to the instruction of the resource reservation.
  • the device can also include a resource modification initiation module.
  • the calling terminal and the called terminal may also initiate subsequent early media negotiation after the early media resource reservation is successful.
  • the detecting module detects the subsequent media resource negotiation result information of the subsequent calling terminal and the called terminal, the resource is modified.
  • the initiating module sends a modification instruction; the resource modification initiating module initiates a resource modification operation of the early media according to the modification instruction.
  • the device can also include an authentication initiation module.
  • the detecting module detects the SDP information of the early media and the authentication token request message of the SDP information of the official media, the detecting module sends an authentication command to the authentication initiating module; the authentication initiating module initiates according to the authentication command. Authentication, and the SDP information of the early media or the SDP information of the official media, or a collection of the two, is carried in the authentication request message.

Abstract

L'invention porte sur un procédé de régulation de ressources média qui fonctionne de la manière suivante: un terminal appelant et un terminal appelé négocient un premier flux média et, après achèvement de la négociation, entament chacun une réservation de ressource sur le premier flux média; l'accès à la ressource média est donné après que la réservation de ressource sur le premier flux média soit terminée. L'invention se rapporte à un autre procédé de régulation de ressources média qui fonctionne de la manière suivante: un terminal appelant et un terminal appelé négocient le premier flux média; on autorise les informations de ressource de premier flux média du terminal appelant et du terminal appelé en cours de négociation; et on donne accès aux ressources média en cours d'autorisation; après achèvement de la négociation sur la ressource du premier flux média, le terminal appelant et le terminal appelé entament chacun une réservation de ressource sur le premier flux média. Le premier flux média est un flux anticipé (ou 'early media'). Avant l'établissement de la session, une garantie de qualité de service (QoS) fiable est fournie eu égard au service de flux média anticipé, par le biais de la réservation de ressource de flux média anticipé.
PCT/CN2006/003818 2005-12-31 2006-12-31 Procédé et dispositif de régulation de ressources média WO2007076720A1 (fr)

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CN2005100482912A CN1996999B (zh) 2005-12-31 2005-12-31 一种媒体资源预留方法和设备
CN200510048291.2 2005-12-31

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Cited By (2)

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