WO2007006231A1 - Procédé permettant à la strate de service de demander des ressources auprès de la strate de transmission dans ngn - Google Patents

Procédé permettant à la strate de service de demander des ressources auprès de la strate de transmission dans ngn Download PDF

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Publication number
WO2007006231A1
WO2007006231A1 PCT/CN2006/001651 CN2006001651W WO2007006231A1 WO 2007006231 A1 WO2007006231 A1 WO 2007006231A1 CN 2006001651 W CN2006001651 W CN 2006001651W WO 2007006231 A1 WO2007006231 A1 WO 2007006231A1
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WO
WIPO (PCT)
Prior art keywords
resource
session
layer device
service
service layer
Prior art date
Application number
PCT/CN2006/001651
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English (en)
Chinese (zh)
Inventor
Shufeng Shi
Ying Wang
Xuexia Yan
Zhong Luo
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
Priority claimed from CNB200510027692XA external-priority patent/CN100442759C/zh
Priority claimed from CN2006100053409A external-priority patent/CN1889566B/zh
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2007006231A1 publication Critical patent/WO2007006231A1/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
    • H04L47/10—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
    • H04L47/74—Admission control; Resource allocation measures in reaction to resource unavailability
    • H04L47/748—Negotiation of resources, e.g. modification of a request

Definitions

  • the present invention relates to network communication technologies, and more particularly to a method for a service layer to request resources from a transport layer in a next generation network.
  • NGN Next Generation Network
  • PSTN Public Switched Telephone Network
  • IP Internet Protocol
  • the network architecture of NGN can be divided into two levels: the service layer and the transport layer.
  • the business layer mainly completes various technologies such as the Internet Multimedia Subsystem (IMS), the Public Switched Telephone Network (PSTN), the Integrated Services Digital Network (ISDN), and the streaming media.
  • IMS Internet Multimedia Subsystem
  • PSTN Public Switched Telephone Network
  • ISDN Integrated Services Digital Network
  • streaming media Application business control functions, and provide a variety of services.
  • the transport layer mainly completes the user's network access and the transmission of various network messages.
  • the functions completed by the transport layer can be subdivided into three parts: the Resource Admission Control Functions (RACF), the Network Access Attachment Functions (NAAF), and the transfer function.
  • RAF Resource Admission Control Functions
  • NAAF Network Access Attachment Functions
  • the transfer function mainly completes the transmission of various information under the control of the above subsystems.
  • the RACF mainly completes the control, allocation, and management functions of the bearer network resources based on the service requirements, and ensures the service quality of the service.
  • the RACF is used to implement the arbitration function for resource negotiation and allocation between the service layer and the transport layer.
  • QoS control such as resource reservation, admission control and gating, where admission control refers to subscriber-based subscription data and operator-based policy rules and network resources.
  • admission control refers to subscriber-based subscription data and operator-based policy rules and network resources.
  • the availability status and the like determine whether or not the user is authorized to access.
  • NAPT/FW traversal control Another major function of RACF.
  • the service control function and the RACF interaction implement resource control of the user service at the transport layer, and the interaction is implemented through the Gq' interface, specifically, the session control proxy function in the service control function (Session Control Proxy Function, SCPF) and RACF are implemented on the interface between the policy decision function PDF.
  • Figure 2 shows the Gq' interface location. Referring to Figure 2, all interfaces between the business control function and the PDF are Gq' interfaces.
  • the following describes a method in which the service layer requests resources from the transport layer in the session establishment process in the prior art.
  • the business layer can determine the resources required for the session based on the user's business request.
  • the service layer may also acquire resources required for the session determined by the CPE according to the CPE through application layer signaling extension or special application layer resource signaling.
  • the service layer initiates a resource request for the resources required by the session to the PDF in the RACF through the SCPF.
  • the PDF in the ACF determines whether the session is authorized to use the resource based on the operator's policy rules and the existing resource status based on the user's subscription data in the NAAF.
  • the RACF sends commands such as gating, packet labeling, and media control to the transmitting function, and simultaneously sends a resource admission message to the service control function through the PDF. Such as If it is determined that the resources required for the session are not authorized, a rejection message is sent to the service control function.
  • the session resources requested by the service layer are based on the service request of the user or according to
  • the indication of the CPE is determined, and the transport layer determines whether the requested session resource is authorized, based on the user subscription information, the operator-based policy, and the existing resource status. It can be seen that, in the prior art, the service layer does not consider the requirements of the transport layer when requesting the session resource. Therefore, the transport layer is denied the resource request of the service layer to the session resource, thereby greatly reducing the success of the service layer requesting the resource from the transport layer. The rate, which in turn leads to a greatly reduced success rate of the session. Summary of the invention
  • the main object of the present invention is to provide a method for a service layer to request a resource from a transport layer in a next generation network, and to improve a success rate of a service layer requesting a resource from a transport layer.
  • a method for requesting a resource from a service layer to a transport layer in a next-generation network includes: acquiring, by a service layer device, resource authorization help information, and adjusting, according to the obtained resource authorization help information, a resource required for the session;
  • the service layer device sends a resource request to the transport layer device according to the resources required by the adjusted session.
  • the step of the service layer device acquiring the resource authorization help information includes: when the session is established, the service layer device sends the resource request carrying the resource information required by the session to the transport layer device; after the transport layer device determines to reject the authorized resource according to the decision policy, The response message carrying the resource authorization help information is sent to the service layer device; the service layer device obtains the resource authorization help information from the received response message.
  • the resource authorization help information includes current network resource status.
  • the resource authorization help information includes user access subscription information.
  • the method further includes: when the service layer device sends the resource request carrying the resource information required by the session to the transport layer device, the transport layer device sends the resource admission message to the service layer device after determining that the authorized resource is used according to the decision policy.
  • the decision policy includes: user access subscription information, operator-based policy rules, and existing resource status.
  • the step of the service layer device acquiring the resource authorization help information includes: after the session is established, the transport layer device sends the resource authorization help information to the service layer device; the service layer device receives and obtains the resource authorization help information.
  • the resource authorization help information is a current network resource status.
  • the transmitting layer device performs the step of transmitting the current network resource status to the service layer device when detecting that the current network resource status is insufficient to support the session.
  • the current network resource status is: bandwidth information that the current network can provide, and/or service level information that the current network can service.
  • the step of the service layer device acquiring the resource authorization help information includes: when the session is established, the service layer device obtains the resource authorization help information from the device that saves the resource authorization help information.
  • the resource authorization help information is a user's access subscription information.
  • the device that saves the resource authorization help information is: a network access attachment function entity, or an entity added in the network and storing user access subscription information.
  • the step of adjusting the resources required for the session according to the obtained resource authorization help information includes: the service layer device and the user premise device that initiates the session, according to the obtained resource authorization help information, required by the negotiation process for the session Resources are adjusted.
  • the service layer device is a service control function entity, or a service control and application subsystem.
  • the transport layer device is a resource admission control function entity or a resource admission control subsystem.
  • the service layer device may further query the user's access subscription information and adjust it before initiating the resource request, so the requested resource must be within the scope of the subscription, and the transport layer device does not reject the contracted resource. Request, and this is one of the most important reasons for the rejection of the resource request, which greatly increases the probability of successful resource request, and the efficiency of session establishment is also improved.
  • the data traffic of the interface between the transport layer device and the service layer device is also Can be reduced.
  • the transport layer device may add the reject reason and the information for the service layer device to adjust the resource request, such as the existing network resource status, and the user's subscription in the NAAF.
  • the service layer device can adjust the next resource request to a reasonable range according to the newly added information in the response message, so the probability of success in the next resource request is greatly improved.
  • the CPE requests resources from the RACF (Transport Layer Device) through the service control function (service development device) according to its own capabilities. However, after the RACF queries the user subscription information in the NAAF, it finds that the user does not have permission to use so many resources. , so refused.
  • the business control function will directly remove the call.
  • the RACF will bring the user's subscription resource information in the response message, so that the service control function can adjust the requested resource quantity to the user subscription resource information range, and can succeed once in the next request, thereby Conducive to improve the success rate of session establishment.
  • the transport layer device can report the network resource status to the service layer device in time, so that the service layer device knows the current resource status change in time.
  • the corresponding resources of the existing session can be adjusted accordingly, so as to ensure that the session will not be easily interrupted when the resources are unexpectedly tight, and the success rate of the session is guaranteed.
  • the service layer device does not blindly request the resources required for the session, but adjusts the resources required for the initially determined session according to the requirements of the transport layer device, and then adjusts the resources for the session.
  • Resource is required to initiate a resource request to the transport layer device, thereby greatly improving the success rate of the service layer requesting resources from the transport layer, thereby greatly improving the success rate of the session.
  • Figure 1 is a schematic diagram of an NGN network architecture.
  • Figure 2 is a schematic diagram of the Gq' interface in the NGN.
  • FIG. 3 is a flow chart of Embodiment 1 of the present invention.
  • Figure 4 is a flow chart of Embodiment 2 of the present invention.
  • FIG. 5 is a flow chart of Embodiment 3 of the present invention. Mode for carrying out the invention
  • the core idea of the present invention is: the service layer device obtains the resource authorization help information, and adjusts the resources required for the session according to the obtained resource authorization help information; the service layer device sends the resource required by the session to the transport layer device according to the adjusted resource required by the session. Resource request.
  • the service layer device obtains the resource authorization help information in three ways: Mode 1: When the session is initially established, the transport layer device carries the resource authorization help information in the response after rejecting the resource request of the service layer device for the session. The message is sent to the service layer device, and the service layer device obtains the resource authorization help information from the received response message.
  • Manner 2 Before the session is initially established, before the service layer device needs to initiate a resource request for the resource required by the session, the service layer device obtains the device that saves the resource authorization help information. Resource authorization help information.
  • the service layer device is a service control function entity
  • the transport layer device is an RACF entity as an example.
  • the resource layer authorization help information is obtained by using the service layer device as an example.
  • the principle of this embodiment is that, when the session layer is established, if the transport layer device rejects the resource request of the service layer device for the resource required by the session, the response of the information including the reason for rejecting and/or helping to adjust the resource request is fed back to the service layer device. Message.
  • the service layer device can authorize the help information according to the newly added resource in the response message, that is, the reason for the rejection and/or help adjust the resource request, the next resource request is adjusted to a reasonable range, thereby greatly improving The success rate of the next resource request.
  • FIG. 3 is a flow chart of Embodiment 1 of the present invention.
  • the process for the service control function entity to request the resource from the transport layer device RACF includes the following steps: Step 301: When the session is initially established, the CPE sends a service request or a resource request to the service control function entity.
  • the service control function entity determines the resources required for the session and sends a resource request for the resources required for the session to the RACF entity.
  • Step 303 The RACF entity decides whether to authorize resource usage according to the subscription data of the user in the network access attachment function, the operator-based policy rule, and the existing resource status, and after deciding to use the resource, to the service control function entity. Send a reject response message.
  • the process of sending a reject response message to the service control function entity includes: the RACF entity extends the Gq' interface, that is, sends a response message to the service control function entity, where the response message includes a reject cause value and/or a help service control function.
  • the information about the reason for the rejection and/or the information for helping to adjust the resource request may include one of the following information or any combination thereof: an existing network resource status, and a subscription information of the user in the network attachment function.
  • the existing network resource status may include: a bandwidth that is currently available by the network, service level information of the network service, and the like.
  • the RACF entity decides to use the authorized resource, the RACF entity finally sends a resource admission message to the service control function entity, and the service control function entity establishes a session connection by using the authorized resource.
  • Step 304 After receiving the reject response message of the RACF entity, the service control function entity directly adjusts the resources required for the initially determined session according to the information contained in the message, so that the resource is within the available resource range.
  • the service control function entity adjusts the resource required for the session according to the reject cause value and the help service control function. , to ensure that the adjustment accuracy is higher.
  • Step 305 The service control function entity resends the resource request to the RACF entity according to the resource required by the adjusted session.
  • Step 306 The RACF entity decides whether to authorize resource usage according to the subscription data of the user in the network access attachment function, the operator-based policy rule, and the existing resource status.
  • the service control function entity since in step 304, the service control function entity has adjusted the resources required by the session according to the information in the response message to make it within the available resource range, in this step, the RACF entity will decide Authorize resource usage and send resource admission messages to the service control function entity through the policy decision function.
  • the CPE entity may also determine the resources required for the session, and the CPE determines the required resources of the session through application layer signaling extension or special application layer resource signaling.
  • the service control function entity receives the resource required by the session determined by the CPE entity, and then performs the process of sending the resource request to the RACF entity.
  • the processing of the foregoing step 304 is modified as follows: the service control function entity interacts with the CPE entity, and determines to adjust the resource required for the session. After the adjustment is completed, the service control function entity re-initiates the resource request to the RACF entity. .
  • the service layer device obtains the resource authorization help information in the second manner as an example.
  • the principle of the embodiment is that the service layer device first queries the user's access subscription information, and determines whether the initially determined session required resource meets the requirements of the subscription information. If not, the resource required for the session is adjusted according to the subscription information, and then A resource request is initiated to the transport layer device for the resources required by the adjusted session.
  • the service layer device By adjusting the resources required by the session according to the user's access subscription information before starting the resource request, it is ensured that the requested resource is within the scope of the contract, and the transport layer device is prevented from rejecting the request by exceeding the contracted resource, thereby greatly increasing the request.
  • the probability of success increases the efficiency of session establishment and reduces the data traffic of the interface between the transport layer device and the service layer device.
  • FIG. 4 is a flow chart of Embodiment 2 of the present invention.
  • the business The process of the control function entity requesting the resource from the transport layer device RACF entity includes the following steps: Step 401: When the session is established, the CPE sends a service request or a resource request to the service control function entity.
  • Step 402 The service control function entity queries the NAAF entity for the access resource information of the user.
  • Step 403 The NAAF entity returns the user's access subscription information to the service control function entity.
  • the service control function may also query the user's access subscription information from an independent third-party device, for example, from the newly added device that stores the access subscription resource information.
  • Step 404 The service control function entity determines whether the resource required for the initially determined session meets the requirement of the user's access subscription information. If yes, step 405 is directly performed; otherwise, the resource required for the session is adjusted to the access signing range of the user. Then, step 405 is performed.
  • the service control function entity initiates a resource request to the RACF entity according to the resource required by the adjusted session.
  • Step 406 The RACF entity performs a process of deciding whether to authorize resource usage.
  • step 404 the service control function entity has adjusted the resources required for the session to the access subscription range of the user, in this step, the RACF entity finally sends a resource admission message to the service control function entity.
  • the initially determined session required resource may be directly determined by the service control function entity, or may be determined by the CPE. If the initially determined resource required by the session is determined by the CPE, the CPE may send the determined resource required by the session to the service control function through application layer signaling extension or special application layer resource signaling. In this case, in the above step 404, the resource required for the session is adjusted to the access token of the user.
  • the process in the W range includes: The service control function entity interacts with the CPE, and negotiates to determine the adjustment of the resources required for the initially determined session, so as to adjust the resources required by the session to the user's access subscription range through the negotiation process.
  • the service layer device obtains the resource authorization help information in the third manner as an example.
  • FIG. 5 is a flow chart of Embodiment 3 of the present invention.
  • the process for the service control function entity to request the resource from the transport layer device RACF entity includes the following steps: Step 501: After the session is established, the RACF entity monitors the resource status of the network.
  • Step 502 The RACF entity sends the current network resource status information to the service control function entity through the Gq' interface.
  • Step 503 The service control function entity determines whether the resource required for the session is adjusted according to the network resource status message reported by the RACF entity. If yes, step 504 is performed; otherwise, the session is continued, and the current process is ended.
  • Step 504 The service control function entity adjusts resources required for the session according to the current network resource status, and initiates a resource request to the RACF entity according to the adjusted resource required by the session.
  • Step 505 The RACF entity performs a process of deciding whether to authorize resource usage.
  • step 504 the service control function entity has adjusted the resources required for the session according to the current network resource status, in this step, the RACF entity finally sends a resource admission message to the service control function entity.
  • the RACF entity may perform the step 502 when it is detected that the current network resource condition is insufficient to support the session. For example, because the total bandwidth of the line used for the problem session on the line is reduced, or the line used by the session is severely blocked, the RACF reports the network resource status to the service control function, and the service control function entity can The session specifies another encoding with a higher compression ratio. In this embodiment, Since the service layer device can know the change of the current resource status in time, the resource requirements of the existing session can be adjusted accordingly, so that the session is not easily interrupted when the resource is unexpectedly tight.
  • the present invention provides a general solution for improving the service layer to the transport layer in the NGN network, which facilitates the specification of information exchange of related interfaces, which is beneficial to improving session establishment efficiency and improving network effective information.
  • the amount of delivery, and improved session continuation time delay is beneficial to improving session establishment efficiency and improving network effective information.
  • the RACF entity may also provide the adjustment result to the user, where the user Determining whether to accept the adjustment result, and at the same time, the RACF entity monitors whether the user-input acceptance adjustment result indication can be received, and if received, continues to perform the process of initiating a resource request according to the adjusted session resource to the RACF entity. And its follow-up process.
  • the RACF entity may be replaced with an entity of another name, and only needs to ensure that the function of the RACF entity can be completed, for example, the RACF entity may be replaced by a RACS entity; It can be replaced with an entity of another name, just by ensuring that the functions of the above NAAF entity can be completed, for example, the NAAF entity can be replaced with the NASS entity.
  • the above three embodiments may be applied separately, that is, any one of the first embodiment, the second embodiment, and the third embodiment may constitute the technical solution for implementing the present invention;
  • the three embodiments may also be used in combination.
  • Embodiment 1 and Embodiment 3 may be used to implement the technical solution of the present invention, or Embodiment 2 and Embodiment 3 may constitute a technical solution for implementing the present invention.
  • the service layer device is a service control function entity
  • the transport layer device is a RACF entity.
  • the service layer is set
  • the backup device may also be a service control and application subsystem
  • the transport layer device may also be a resource admission control subsystem.
  • the NGN complies with the standards of the International Telecommunication Union-Telecom Standards Department, or conforms to the Telecommunications and Internet Convergence Service and Protocol (TISPA) standard for advanced networks.
  • TISPA Internet Convergence Service and Protocol

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

Abstract

L’invention concerne un procédé permettant à la strate de service de demander des ressources auprès de la strate de transmission dans NGN, comprenant les étapes suivantes : la strate de service obtient les informations d’aide relatives à l’accord des ressources, et ajuste les ressources demandées pour la session en fonction des informations d’aide reçues relatives à l’accord des ressources, la strate de service envoie la demande de ressources à la strate de transmission en fonction de certaines ressources demandées pour la session. Dans la présente invention, la strate de service ne demande pas aveuglément les ressources requises pour la session, et après avoir ajusté les ressources initialement décidées requises pour la session en fonction des informations d’aide relatives à l’accord des ressources, elle envoie à nouveau la demande de ressources à la strate de transmission conformément aux ressources ajustées requises pour la session, améliorant ainsi grandement le taux de réussite de la demande de ressources par la strate de service à la strate de transmission, améliorant ainsi grandement le taux de réussite de la session.
PCT/CN2006/001651 2005-07-12 2006-07-12 Procédé permettant à la strate de service de demander des ressources auprès de la strate de transmission dans ngn WO2007006231A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
CN200510027691.5 2005-07-12
CN200510027692.X 2005-07-12
CNB200510027692XA CN100442759C (zh) 2005-07-12 2005-07-12 下一代网络中业务层向传送层请求资源的方法
CN200510027691 2005-07-12
CN2006100053409A CN1889566B (zh) 2005-07-12 2006-01-13 下一代网络中业务层向传送层请求资源的方法
CN200610005340.9 2006-01-13

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WO2007006231A1 true WO2007006231A1 (fr) 2007-01-18

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US20100287602A1 (en) * 2008-01-11 2010-11-11 Zte Corporation Content delivery device and system, content-on-demand method and network architecture
US9009333B2 (en) 2007-11-20 2015-04-14 Zte Corporation Method and device for transmitting network resource information data

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Publication number Priority date Publication date Assignee Title
US9009333B2 (en) 2007-11-20 2015-04-14 Zte Corporation Method and device for transmitting network resource information data
US20100287602A1 (en) * 2008-01-11 2010-11-11 Zte Corporation Content delivery device and system, content-on-demand method and network architecture

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