WO2012167546A1 - Procédé et dispositif de commande de fourniture de services - Google Patents

Procédé et dispositif de commande de fourniture de services Download PDF

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Publication number
WO2012167546A1
WO2012167546A1 PCT/CN2011/082102 CN2011082102W WO2012167546A1 WO 2012167546 A1 WO2012167546 A1 WO 2012167546A1 CN 2011082102 W CN2011082102 W CN 2011082102W WO 2012167546 A1 WO2012167546 A1 WO 2012167546A1
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WO
WIPO (PCT)
Prior art keywords
service
control policy
terminal
pcrf
cdf
Prior art date
Application number
PCT/CN2011/082102
Other languages
English (en)
Chinese (zh)
Inventor
王岩
袁立平
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201180002934.3A priority Critical patent/CN103503512B/zh
Priority to PCT/CN2011/082102 priority patent/WO2012167546A1/fr
Publication of WO2012167546A1 publication Critical patent/WO2012167546A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/50—Network service management, e.g. ensuring proper service fulfilment according to agreements
    • H04L41/5003—Managing SLA; Interaction between SLA and QoS
    • H04L41/5019—Ensuring fulfilment of SLA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/66—Policy and charging system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/24—Accounting or billing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/02—Capturing of monitoring data
    • H04L43/028—Capturing of monitoring data by filtering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a service distribution control method and device.
  • Background Art Currently, mobile data traffic of types such as video and pictures is rapidly increasing in mobile networks. The evolution of the mobile network still cannot avoid the limitations of wireless communication. The bandwidth stability of the wireless access network is poor. There are spectrum resource bottlenecks. A large number of users share limited resources. The traffic of various services of the mobile operator network faces user experience and network capacity. challenge.
  • a content delivery network can cache hot content service content or service content provided by a content provider with a cooperative relationship in a cache node that is closer to the user, thereby reducing service data transmission delay. Save internet settlement.
  • the cache node can also provide an adaptive transcoding service for the service through the service optimization technology, so that the service code rate adapts the network transmission bandwidth and the terminal service processing capability.
  • the embodiments of the present invention provide a service distribution control method, which enables different services of different users to occupy network resources reasonably, and implements optimization processing on service content to avoid network congestion and ensure normal service experience of users.
  • an embodiment of the present invention provides a service distribution control method, including:
  • Obtaining service flow information of the terminal where the service flow information includes at least the service identifier and service flow quintuple information requested by the terminal;
  • the embodiment of the invention further provides a service distribution control method, including:
  • the service flow information includes at least the service identifier and the service flow quintuple information requested by the terminal;
  • the service transmitted to the terminal is optimized according to the first service optimization control policy.
  • the embodiment of the invention further provides a service distribution control method, including:
  • an embodiment of the present invention further provides a policy and charging rule function entity PCRF, which includes:
  • a receiver configured to obtain service flow information of the terminal, where the service flow information includes at least a service identifier and service flow quintuple information requested by the terminal;
  • a processor configured to: according to the service flow information, and at least one of the user subscription information and the network status of the terminal, search for a preset service policy, and determine a first service transmission control policy and a first service optimization control policy;
  • a transmitter configured to send the first service transmission control policy to the policy and charging execution function entity PCEF, so that the PCEF performs resource allocation on the service requested by the terminal according to the first service transmission control policy. Transmitting the first service optimization control policy to the content distribution function entity CDF, so that the CDF transmits to the terminal according to the first service optimization control policy.
  • Business is optimized.
  • the embodiment of the invention further provides a traffic detection function entity TDF, including:
  • a receiver configured to acquire a first service request of the terminal, and configured to receive the first service optimization control policy delivered by the PCRF;
  • a processor configured to obtain service flow information of the terminal according to the first service request, where the service flow information includes at least a service identifier and service flow quintuple information requested by the terminal;
  • the service flow information is reported to the policy and charging rule function entity PCRF, so that the PCRF searches for a corresponding service policy according to the service flow information, and at least one of the user subscription information and the network status of the terminal. Determining a first service transmission control policy and a first service optimization control strategy.
  • the embodiment of the present invention further provides a content distribution function entity CDF, including:
  • a receiver configured to receive a first service optimization control policy, where the first service optimization control policy is searched by the policy and charging rule function entity PCRF according to service flow information, and at least one of user subscription information and network status of the terminal Business strategy
  • a controller configured to optimize, according to the first service optimization control policy, the service transmitted to the terminal, if the receiver receives the first service optimization control policy.
  • the embodiment of the present invention further provides a policy and charging execution function entity PCEF, including: a receiver, configured to receive a first service transmission control policy delivered by a policy and charging rule function entity PCRF, where the first service transmission control The policy is determined by the PCRF according to the service flow information of the service requested by the terminal, and at least one of the user subscription information and the network status of the terminal, and the corresponding service policy is determined;
  • a policy and charging execution function entity PCEF including: a receiver, configured to receive a first service transmission control policy delivered by a policy and charging rule function entity PCRF, where the first service transmission control The policy is determined by the PCRF according to the service flow information of the service requested by the terminal, and at least one of the user subscription information and the network status of the terminal, and the corresponding service policy is determined;
  • a processor configured to perform resource allocation on the service requested by the terminal according to the first transmission control policy.
  • the PCRF dynamically determines the service transmission control policy and the service optimization control policy according to the service information, the user subscription information and the network status of the service requested by the terminal, and the service transmission control policy is
  • the PCEF is sent to the PCEF to allocate resources to the terminal's services.
  • the service optimization control policy is sent to the CDF, so that the CDF optimizes the services transmitted to the terminal. Therefore, different services of different users can be used to occupy the network resources reasonably, and the service content is optimized to avoid network congestion and ensure the normal service experience of the user.
  • FIG. 1 is a schematic flowchart of a service distribution control method according to another embodiment of the present invention
  • FIG. 2 is a schematic flowchart of another embodiment of a service distribution control method according to the present invention
  • FIG. 4 is a schematic flowchart of still another embodiment of a service distribution control method according to the present invention
  • FIG. 4b is a schematic flowchart of still another embodiment of a service distribution control method according to the present invention
  • Figure 5b is a schematic flowchart of an embodiment of a service distribution control method according to an embodiment of the present invention
  • Figure 6b is a schematic flowchart of an embodiment of a service distribution control method provided by the present invention
  • FIG. 7 is a schematic structural diagram of a policy and charging rule function entity PCRF according to an embodiment of the present invention
  • FIG. 8 is a schematic structural diagram of a traffic detection function entity TDF according to an embodiment of the present invention
  • FIG. 9 is a schematic structural diagram of another embodiment of a traffic detection function entity TDF according to the present invention.
  • FIG. 10 is a schematic structural diagram of a content distribution function entity CDF according to an embodiment of the present invention
  • FIG. 11 is a schematic structural diagram of still another embodiment of a content distribution function entity CDF provided by the present invention.
  • FIG. 12 is a schematic structural diagram of a policy and charging execution function entity PCEF according to an embodiment of the present invention.
  • FIG. 13 is a schematic structural diagram of still another embodiment of a policy and charging execution function entity PCEF provided by the present invention.
  • the technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. example. Based on the embodiments of the present invention, those of ordinary skill in the art are not doing All other embodiments obtained under the premise of creative labor are within the scope of the invention.
  • FIG. 1 is a schematic flowchart of an embodiment of a service distribution control method according to the present invention. As shown in FIG. 1, the method includes:
  • the first service transmission control policy is sent to the policy and charging execution function entity PCEF, so that the PCEF allocates resources to the service requested by the terminal according to the first service transmission control policy, and sends the first service optimization control policy to the
  • the content distribution function entity CDF is such that the CDF optimizes the service transmitted to the terminal according to the first service optimization control policy.
  • the execution body of the above steps is the Policy and Charging Rule Function (PCRF).
  • PCF Policy and Charging Rule Function
  • the service flow information of the user equipment may be sent to the PCRF by a traffic detection function (TDF), or may be reported by a content delivery function (CDF).
  • TDF traffic detection function
  • CDF content delivery function
  • the TDF may intercept various service requests sent by the terminal to the service content source or the CDF, where the service request may be a Hyper Text Transfer Protocol (HTTP) Get request, and the requested service type may be a video play request, Web access requests and more.
  • the TDF may identify the category to which the service belongs according to the Uniform Resource Locator (URL) carried in the intercepted service request, and determine information such as the service identifier and the service flow quintuple information, where the service flow quintuple information includes : The source IP address and port number of the CDF, the destination IP address and port number of the terminal, and the Transmission Control Protocol (TCP) used by the service.
  • HTTP Hyper Text Transfer Protocol
  • TCP Transmission Control Protocol
  • the operation of intercepting the terminal service request performed by the TDF and further obtaining the service flow information of the terminal may also be performed by the improved CDF.
  • the improvement to the CDF may be, for example, adding a service flow detection function to the existing CDF. Unit, and add an interface to the CDF to interact with the PCRF.
  • the PCRF can search for the preset service policy according to the service flow information, and at least one of the terminal subscription information and the network status of the terminal. Slightly, the first service transmission control policy and the first service optimization control policy are determined.
  • the dynamic policy is a dynamic policy that is preset by the PCRF for performing differentiated control according to different terminals, different network environments, and different service categories that are requested.
  • the dynamic policy specifically includes: The service flow template, the charging method, the service quality of the service (QoS), the gating information, and the like, and the authorized maximum service bandwidth for determining the service optimization control policy, and whether the service optimization indication information is allowed.
  • the service flow template is used by the PCEF to identify the service data flow, thereby associating the service data flow with the corresponding transmission bearer; the charging method indicates whether the online charging or the offline charging is performed, and the charging is according to the traffic, the duration, or the event; Service transmission service quality includes QoS Class Identifier, Maximum Bit Rate (MBR), Guaranteed Bit Rate (GBR), Allocation and Retention Priority (ARP), etc.
  • MRR Maximum Bit Rate
  • GRR Guaranteed Bit Rate
  • ARP Allocation and Retention Priority
  • the parameter is used by the PCEF to establish a service transmission bearer;
  • the gating information includes a gating state, and the gating state is ON, indicating that the current video data stream is allowed to be transmitted, otherwise the transmission is prohibited;
  • the maximum authorized service bandwidth is the maximum transmission bandwidth of the transmission service,
  • the rate conversion of the service is defined by the CDF;
  • the service optimization indication is used to allow or prohibit the CDF to optimize the service.
  • the preset service policy on the PCRF can be implemented in the following aspects: Provide differentiated control according to the video source, for example: Carrier-controlled transmission on the carrier network from the Internet (Internet) Third-party content (Over The Top, OTT) video provides best-effort transmission QoS, does not optimize video processing; video or carrier from a third-party content provider (Business to Business, B2B) with partnership (Business to Client, B2C) video provides high priority transmission QoS, and implements video optimization processing to adapt terminal playback capability and transmission bandwidth;
  • OTT Third-party content provider
  • B2C Business to Client
  • Differentiated controls based on user video levels such as: Different user bandwidths and video optimization controls for different levels of users, Gold users can assign the highest video transmission bandwidth and provide video optimization services; Silver users can assign medium video transmissions Bandwidth, and provide video optimization services; Bronze users can allocate lower bandwidth and do not provide video optimization services;
  • Differentiated control is implemented according to the type of video that the user subscribes to. For example, only the video subscribed to the user is provided with bandwidth guarantee and video optimization processing, and only the best-effort service is provided for the non-signed video.
  • the formed service policy of the video service may include, for example: video policy 1, corresponding to a high priority video bearer, maximum 2M video bandwidth, allowing CDF Optimize the video; Video Policy 2, corresponding to high-priority video bearers, maximum 1M video bandwidth, allowing CDF to optimize video processing; Video Strategy 3, corresponding to low-priority (best effort) transmission bearer, maximum 500K video Bandwidth, allows CDF to optimize video processing; Video strategy 4, corresponding to low priority (best effort) transmission bearer, maximum 500K video bandwidth, does not allow CDF to optimize video processing.
  • the PCRF can set or modify the service policy according to actual needs or according to the actual adjustment effect of the service transmission control policy and the service optimization control policy. .
  • the PCRF may find the user subscription information of the terminal according to the service identifier and the service flow quintuple information carried by the terminal carried in the service flow information, where the user subscription information may be obtained from the home subscription server ( Home Subscriber Server, HSS) / Home Location Register (HLR) and other network elements.
  • the PCRF can further determine the first service transmission control policy and the first service optimization control policy according to the user's service flow information, user subscription information, and current network status.
  • the PCRF can send the first service transmission control policy to the PCEF, and the policy and charging execution entity.
  • PCEF Policy and Charging Enforcement, Function
  • the PCEF After performing the resource allocation operation, the PCEF returns a response message to the PCRF. If the response information indicates that the resource allocation operation is successful, the PCRF may send the first service optimization control policy to the CDF through the TDF, or may perform the first service optimization control.
  • the policy is directly sent to the interface CDF that interacts with the PCRF, and the CDF performs an operation for optimizing the service transmitted to the terminal.
  • the first service optimization control policy may indicate whether the CDF is allowed to optimize the service transmitted to the terminal and the type of operation that is allowed to be optimized. If allowed, the CDF may perform format conversion, rate conversion conversion, and the like on the service data sent to the terminal. In order to match the transmitted service data with the processing capability of the terminal or the maximum bandwidth of the authorization; if not allowed, the CDF may directly obtain the corresponding service from the local cache or from the content source of the service requested by the terminal to the terminal.
  • the PCRF may send an error indication to the CDF through the TDF, or may directly send the error indication to the CDF of the interface with the PCRF, so that the CDF stops transmitting the service to the terminal.
  • the PCRF can adjust the service transmission control policy sent to the PCEF according to the changed user subscription information and/or the network status, so that the PCEF requests the service from the terminal.
  • the resource allocation is compatible with the contract service of the terminal itself and the network status; the service optimization control policy delivered to the CDF is matched with the service processing capability and network status of the terminal itself.
  • the PCRF dynamically determines the service transmission control policy and the service optimization control policy according to the service information, the user subscription information, and the network status of the service requested by the terminal, and sends the service transmission control policy to the service delivery control policy.
  • the PCEF enables the PCEF to allocate resources to the services of the terminal; the service optimization control policy is sent to the CDF, so that the CDF optimizes the services transmitted to the terminal. Therefore, different services of different users are used to occupy network resources reasonably, and the service content is optimized to avoid network congestion and ensure normal user experience.
  • FIG. 2 is a schematic flowchart of still another embodiment of a service distribution control method according to the present invention. As shown in FIG. 2, the method includes:
  • the service flow information is reported to the policy and charging rule function entity PCRF, so that the PCRF searches for the corresponding service policy according to the service flow information, and at least one of the user subscription information and the network status of the terminal, to determine the first service transmission control.
  • the service transmitted to the terminal is optimized according to the first service optimization control policy.
  • the execution body of the above steps may be TDF, or may be added with a unit with traffic flow detection function, and the CDF of the interface interacting with the PCRF is added.
  • the TDF may intercept various service requests sent by the terminal to the service content source or the CDF, and may identify the service according to the Uniform Resource Locator (URL) carried in the intercepted service request.
  • the category, the service identifier and the service flow quintuple information including: a source IP address and a port number pointing to the CDF, a destination IP address and a port number of the terminal, and a TCP used by the service.
  • the TDF may report the service flow information carrying the service identifier and the service flow quintuple information to the PCRF.
  • the PCRF returns the first service transmission control policy or error information to the TDF
  • the TDF may directly send the first service transmission control policy to the CDF.
  • TDF can also use the first service
  • the transmission control policy is carried back to the CDF in the service request of the terminal.
  • the TDF can directly deliver the service optimization control policy re-delivered by the PCRF to the CDF.
  • the TDF may also carry the service transmission control policy re-delivered by the PCRF in the service request and return it to the CDF after intercepting another service request of the terminal for the same service.
  • the TDF may forward the optimized control policy corresponding to the service request that is allowed to be optimized to the CDF for optimization, but not for the optimization process.
  • the optimized control policy corresponding to the optimized service request may be forwarded to the service provider without being forwarded to the CDF.
  • the TDF may preset the domain name or the URL list. After the TDF intercepts the service request sent by the terminal, if the domain name or the URL included in the service request exists in the pre-configured list, the TDF may directly send the service request. The CDF is subsequently optimized. If the domain name or URL included in the service request does not exist in the pre-configured list, the TDF does not send the service request to the CDF for optimization processing and directly sends it to the service provider. There is no interaction between TDF and PCRF in this process.
  • the TDF can forward all service requests directed to one or more ports (for example, port 80) directly to the CDF for subsequent processing, and the CDF determines whether the current service is optimized. There is no interaction between TDF and PCRF in this process.
  • the service request sent by the terminal may be detected by the unit of the service flow detection function added in the CDF, thereby obtaining Service identification and business quintuple information, and by adding 4 to the interface interacting with PCRF? 0 ⁇ .
  • the interface interacting with the PCRF receives the first service transmission control policy delivered by the PCRF, if the first service transmission control policy CDF optimizes the service transmitted to the terminal, the CDF may format the service data sent to the terminal.
  • the transmitted service data matches the processing capability of the terminal or the maximum bandwidth of the authorization; if not allowed, the CDF can be directly from the local cache or from the content source of the service requested by the terminal.
  • the corresponding service is sent to the terminal; if the error message sent by the PCRF is received, the CDF stops transmitting the service to the terminal.
  • the CDF can optimize the service sent to the terminal according to the service optimization control policy re-delivered by the PCRF.
  • the TDF or the CDF may report the service flow information corresponding to the terminal service request to the PCRF, and the PCRF may dynamically determine the service according to the service information, the user subscription information, and the network status of the service requested by the terminal.
  • the control strategy is optimized and delivered directly to the CDF, or sent to the CDF through the TDF, so that the CDF optimizes the services transmitted to the terminal. Therefore, different services of different users are used to occupy network resources reasonably, and the service content is optimized to avoid network congestion and ensure normal service experience of users.
  • FIG. 3 is a schematic flowchart of another embodiment of a service distribution control method according to the present invention. As shown in FIG. 3, the method includes:
  • the first service transmission control policy is used by the PCRF according to the service flow information of the service requested by the terminal, and at least the user subscription information and the network status of the terminal. One, find the corresponding business strategy, determined;
  • the execution body of the above steps may be a PCEF, and the PCEF may be a separately set network element, or may be a network element integrated with the TDF and/or CDF.
  • the PCEF After receiving the first service transmission control policy sent by the PCRF, the PCEF can create a new bearer for the service requested by the terminal according to the first service transmission control policy. If there is no available bearer between the terminal and the PCEF, if the terminal and the PCEF are between the terminal and the PCEF, If a bearer is available, the PCEF can modify the current QoS and traffic flow template (TFT).
  • TFT current QoS and traffic flow template
  • the PCEF may indicate that the resource allocation operation is successful by using the response message returned to the PCRF, so that the PCRF sends a service optimization control policy to the CDF; if the resource allocation execution fails, the PCEF may indicate the resource allocation by using the response information. Failure, so that the PCRF sends an error message to the CDF, instructing the CDF to stop transmitting the corresponding service to the terminal.
  • the PCRF can dynamically adjust the service transmission control policy sent to the PCEF, and the PCEF can adjust the terminal request service according to the service transmission control policy determined by the PCRF.
  • the resource allocation is adapted to the contracting service of the terminal itself and the network conditions.
  • the PCRF can dynamically determine the service transmission control policy according to the service information, the user subscription information, and the network status of the service requested by the terminal, and send the service to the PCEF to enable the PCEF to transmit the service to the terminal. Make resource allocations. Therefore, different services of different users can be used to occupy the network resources reasonably, and the service content is optimized to avoid network congestion and ensure the normal service experience of the user.
  • FIG. 4a is a schematic flowchart of another embodiment of a service distribution control method according to the present invention.
  • PCEF, TDF, and CDF are independently set network elements, and the following independently set The process of the network element performing the service distribution control method is described in detail.
  • the method includes:
  • the UE attaches a network to establish a Packet Data Protocol (PDP) context or an Evolved Packet Core (EPC) default.
  • PDP Packet Data Protocol
  • EPC Evolved Packet Core
  • the UE initiates a first service request, where the first service request is redirected or terminated to a CDF network element.
  • the first service request is redirected to the CDF.
  • the service source receives the first service request sent by the UE, the service source or the domain name resolution system instructs the terminal to re-initiate the first service request directed to the CDF.
  • the CDF refers to: The first service request sent by the terminal to the service source, and finally the CDF responds to the service request.
  • the first service request is an HTTP Get request, and may request a video service, a picture service, a text service, or a web browsing service, and is not enumerated.
  • the UE Taking the first service request sent by the UE as a video request, if the video requested by the UE is in an adaptive download mode, the UE first requests a CDF network element to obtain a manifest file, and then according to the list file.
  • the video service request is sequentially sent for each video frequency band; if the video requested by the UE adopts a progressive download mode, the UE may request to acquire the entire video file through a video service request.
  • the first service request sent by the UE is intercepted by the TDF.
  • the S404a and the TDF identify the service category according to the URL in the first service request, and determine the video identifier and the service flow quintuple information corresponding to the service.
  • the TDF can obtain the video service flow quintuple information according to the service request: a source IP address and a port number pointing to the CDF, and a destination IP address and a port number pointing to the UE.
  • the S405a and the TDF report the service flow information to the PCRF, where the service flow information includes the service identifier and the service flow quintuple information requested by the UE.
  • the S406a and the PCRF search for a preset service policy according to the service flow information, and at least one of the user subscription information and the network status, and determine the first service transmission control policy and the first service optimization control policy.
  • the PCRF needs to implement a video session binding with a Packet Data Network (PDN) session according to the IP address of the UE.
  • PDN Packet Data Network
  • the first service transmission control policy may include: a service flow template, a charging method, a QoS, a gate, and the like, where the first service transmission control policy corresponds to an existing policy and charging control (PCC) rule.
  • PCC policy and charging control
  • the first service optimization control policy may include: authorizing maximum video bandwidth, gating information, and whether to allow video optimization indication, and the first service optimization control policy may be determined by the PCRF according to actual needs, or may be detected for an existing application.
  • the indicator cells of the Application Detection and Control (ADC) rule are extended.
  • S408a and the PCEF perform the first service optimization control policy. If the UE has no available bearer between the PCEFs, the new service bearer is created. If the bearer is available, the current bearer QoS and TFT information are modified.
  • PCEF returns a response message to the PCRF.
  • the response information may indicate that the PCEF performs a resource allocation operation of the UE requesting service successfully or fails.
  • the PCRF sends the first service optimization control policy to the TDF, otherwise the error message is sent to the TDF.
  • the error information may be a parameter such as a cause value.
  • S411a and TDF carry the first service optimization control policy or error information in the first service request and return it to the CDF.
  • the TDF adds the extended first service optimization control policy or error information in the User Agent header field in the HTTP Get request, and then forwards it to the CDF.
  • the TDF may directly send the first service optimization control policy or error information to the CDF.
  • the CDF After receiving the first service request forwarded by the TDF, if the first service request carries the error information, the CDF stops transmitting the video, and the CDF performs the service transmitted to the UE according to the first service optimization control policy.
  • the first service optimization control policy may indicate that the CDF allows optimal control of services transmitted to the UE, and may also prohibit the CDF from performing optimal control on services transmitted to the UE. For example, if the service requested by the UE is a video service, then for the Progressive Download video service request, if the first service optimization control policy allows the CDF to perform video optimization processing, the CDF can transcode the video to match the authorized maximum bandwidth and the UE. Video playback capability (eg: screen resolution, supported video codec and file format, etc.).
  • the CDF does not perform any video optimization processing, but directly the UE.
  • the requested video is transmitted to the UE.
  • the CDF can limit the requested video bit rate by the authorized maximum video bandwidth.
  • the information such as the UE video playback capability may be reported to the CDF through the User Agent field in the first service request sent by the UE, or the CDF may also query the local device according to the International Mobile Equipment Identity (IMEI).
  • IMEI International Mobile Equipment Identity
  • the UE information base is obtained.
  • the CDF returns the service data requested by the UE to the UE by using the first service request response (HTTP response).
  • HTTP response the first service request response
  • the UE may continue to issue other service requests according to the manifest file to obtain subsequent video segments.
  • FIG. 4b is a schematic flowchart of still another embodiment of a service distribution control method according to the present invention. As shown in FIG. 4b, on the basis of the embodiment shown in FIG. 4a, this embodiment provides user subscription information and/or network status. When changing, the independently set PCEF, TDF, and CDF perform a further process of the service distribution control method, the method including:
  • the PCRF re-determines the second service transmission control policy and the second service optimization control policy.
  • the change of the user subscription information may be, for example, the service level of the user subscription changes, and the network status change may be, for example, the network is busy, idle, or has cell congestion.
  • the PCRF can dynamically update the service transmission control policy sent to the PCEF and the service optimization control policy sent to the CDF when the user subscription information changes and/or the network status changes, so that the PCEF controls the service transmission, and the CDF. Optimized control of the business is compatible with the terminal and network conditions Should.
  • the updated service transmission control policy is the second service transmission control policy
  • the updated service optimization control policy is the second service optimization control strategy.
  • S403b and TDF store the second service optimization control policy into the local cache.
  • TDF returns a response message to the PCRF.
  • the PCEF adjusts resource allocation of the service requested by the terminal according to the second service transmission control policy.
  • the execution of S402b-S404b and the execution of S405b may determine the execution order according to a specific service policy. For example, if S402b-S404b only involves modifying the transcoding control of the terminal service, the step S405b may be omitted; if the service policy is to reduce the transmission bandwidth and code rate of the current terminal when the network is busy, S402b-S404b may be executed first, and then executed. S405b: If the service policy is to improve the transmission bandwidth and the code rate of the terminal, S405b may be performed first, and then S402b-S404b is performed.
  • the terminal sends a second service request, and the TDF intercepts the second service request.
  • the TDF carries the second service optimization control policy in the local cache in the second service request, where is added to the HTTP User Agent header field and returned to the CDF.
  • the TDF may directly send the second service optimization control policy or error information to the CDF.
  • the steps of S403b and S407b are omitted.
  • S409b and CDF adjust the optimization of the service transmitted to the terminal according to the second service optimization control policy in the second service request.
  • a PCEF is an independently set network element
  • a TDF and a CDF are integrally integrated network elements. Specifically, it may be a function of extending the integrated CDF on the TDF, or a function of expanding the integrated TDF on the CDF.
  • the following describes the process of performing the service distribution control method by the network element in detail. The method includes:
  • the UE attaches a network to establish a PDP context or an EPC default bearer.
  • the UE initiates a first service request, where the first service request is redirected or terminated to a CDF network element.
  • the first service request sent by the UE is intercepted by the TDF/CDF.
  • the S504a and the TDF/CDF identify the service category according to the URL in the first service request, and determine the video identifier and the service flow quintuple information corresponding to the service.
  • the S505a and the TDF/CDF report the service flow information to the PCRF, where the service flow information includes the service identifier and the service flow quintuple information requested by the UE.
  • the S507a and the PCRF deliver the first service optimization control policy to the PCEF.
  • S508a and the PCEF perform the first service optimization control policy. If the UE has no available bearer between the PCEFs, the new service bearer is created. If the bearer is available, the current bearer QoS and TFT information are modified.
  • the PCRF sends the first service optimization control policy to the TDF/CDF. Otherwise, the error message is sent to the TDF/CDF.
  • the TDF/CDF stops transmitting the video, otherwise the TDF/CDF optimizes the service transmitted to the UE according to the first service optimization control policy.
  • TDF/CDF return the service data requested by the UE to the UE through the first service request response (HTTP response).
  • the UE may continue to issue other service requests according to the manifest file to obtain subsequent video segments.
  • FIG. 5b is a schematic flowchart of an embodiment of a service distribution control method according to the present invention. As shown in FIG. 3, on the basis of the embodiment shown in FIG. 5a, this embodiment provides a change in user subscription information and/or network status.
  • the method includes:
  • the PCRF re-determines the second service transmission control policy and the second service optimization control policy.
  • S502b and PCRF send a second service optimization control policy to the TDF/CDF.
  • the S503b and the TDF/CDF adjust the optimization of the service transmitted by the terminal according to the second service optimization control policy in the second service request.
  • TDF/CDF returns a response message to the PCRF.
  • the PCEF adjusts resource allocation of the service requested by the terminal according to the second service transmission control policy.
  • TDF/CDF return the video segment adjusted according to the second service optimization control policy to the UE.
  • the difference between this embodiment and the embodiment shown in FIG. 4b is that the TDF and the CDF-body integrated arrangement form the TDF/CDF. Therefore, compared with the embodiment shown in FIG. 4b, the relationship between the TDF and the CDF is omitted.
  • other processes can be referred to the corresponding description in the embodiment shown in FIG. 4b.
  • FIG. 6 is a schematic flowchart of an embodiment of a service distribution control method according to the present invention.
  • a PC element, a TDF, and a CDF are integrally integrated, and the following is a PCEF/TDF/CDF.
  • the function of extending the integrated TDF and CDF on the PCEF may be extended, or the function of integrating the PCEF and the CDF may be extended on the TDF, or the function of integrating the PCEF and the TDF may be extended on the CDF, and the following functions are performed on the network element.
  • the process of the business distribution control method is described in detail.
  • the UE attaches a network to establish a PDP context or an EPC default bearer.
  • the UE initiates a first service request, and the first service request is redirected or terminated to a PCEF/TDF/CDF network element.
  • the first service request sent by the UE is intercepted by the PCEF/TDF/CDF.
  • the S604a and the PCEF/TDF/CDF identify the service category according to the URL in the first service request, and determine the video identifier and the service flow quintuple information corresponding to the service.
  • the S605a and the PCEF/TDF/CDF report the service flow information to the PCRF, where the service flow information includes the service identifier and the service flow quintuple information requested by the UE.
  • the S606a and the PCRF search for a preset service policy according to the service flow information, the user subscription information, and the network status, and determine the first service transmission control policy and the first service optimization control policy.
  • the S607a and the PCRF deliver the first service optimization control policy to the PCEF/TDF/CDF.
  • the S608a, the PCEF/TDF/CDF performs the first service optimization control policy, and if the UE has no available bearers between the PCEFs, the new service bearer is created; if the bearer is available, the current bearer QoS and TFT information are modified.
  • S609a, PCEF/TDF/CDF returns a response message to the PCRF.
  • the PCRF sends the first service optimization control policy to the PCEF/TDF/CDF. Otherwise, the error message is sent to the PCEF/TDF/CDF.
  • the PCEF/TDF/CDF stops transmitting the video, otherwise the PCEF/TDF/CDF optimizes the traffic transmitted to the UE according to the first service optimization control policy.
  • PCEF/TDF/CDF return the service data requested by the UE to the UE through the first service request response (HTTP response).
  • the Bay J UE If the UE requests the video service of the Adaptive streaming mode, the Bay J UE
  • PCEF/TDF/CDF After PCEF/TDF/CDF obtains a video clip, it can continue to issue other service requests according to the manifest file to obtain subsequent video clips.
  • FIG. 6b is a schematic flowchart of an embodiment of a service distribution control method according to the present invention. As shown in FIG. 3, on the basis of the embodiment shown in FIG. 6a, this embodiment provides a change in user subscription information and/or network status. At the same time, the integrated PCEF, TDF and CDF perform a further process of the service distribution control method, the method comprising:
  • the PCRF re-determines the second service transmission control policy and the second service optimization control policy.
  • S602b and PCRF send a second service optimization control policy to the PCEF/TDF/CDF.
  • the PCEF/TDF/CDF adjusts the optimization of the service transmitted by the terminal according to the second service optimization control policy in the second service request.
  • PCEF/TDF/CDF returns a response message to the PCRF.
  • S605b and PCRF send a second service transmission control policy to the PCEF/DF/CDF.
  • PCEF/DF/CDF adjust resource allocation for the service requested by the terminal according to the second service transmission control policy.
  • PCEF/TDF/CDF returns to the UE a video segment adjusted according to the second service optimization control policy.
  • the storage medium includes: a ROM, a RAM, a magnetic disk, or an optical disk, and the like, which can store program codes.
  • FIG. 7 is a schematic structural diagram of a policy and charging rule function entity PCRF according to an embodiment of the present invention.
  • the PCRF includes: a receiver 11, a processor 12, and a transmitter 13; and a receiver 11 Obtaining service flow information of the terminal, where the service flow information includes at least a service identifier and a service flow quintuple information requested by the terminal;
  • the processor 12 is configured to: according to the service flow information, and at least one of the user subscription information and the network status of the terminal, search for a preset service policy, and determine the first service transmission control policy and the first service optimization control policy;
  • the transmitter 13 is configured to send the first service transmission control policy to the policy and charging execution function entity PCEF, so that the PCEF allocates resources to the service requested by the terminal according to the first service transmission control policy, and optimizes the first service.
  • the policy is sent to the content distribution function entity CDF, so that the CDF optimizes the service transmitted to the terminal according to the first service optimization control policy.
  • the receiver 11 is further configured to: receive a response message returned by the PCEF, where the response message is used to indicate that the PCEF successfully allocates the service resource requested by the terminal, or the response message is used to indicate that the PCEF fails to allocate the service resource requested by the terminal;
  • the transmitter 13 may be configured to send the first optimized control policy to the CDF.
  • the sender 13 may be further configured to: send an error message to the CDF to instruct the CDF to stop transmitting the requested service to the terminal.
  • processor 12 is further configured to: determine, according to the changed user subscription information and/or the network status, the second service transmission control policy and the second service optimization control policy;
  • the transmitter 13 may be further configured to: send the second service transmission control policy to the policy and charging execution function entity PCEF, so that the PCEF adjusts the resource allocation of the service requested by the terminal according to the second service transmission control policy, and the second The service optimization control policy is sent to the content distribution function entity CDF, so that the CDF adjusts the optimization of the service transmitted to the terminal according to the second service optimization control policy.
  • the processor 12 may be further configured to: determine a service policy according to at least one of a different service category, a different third-party service provider, and different user subscription information, where the service policy includes: a service flow template, a charging method, Service transmission QoS, gating information, authorized maximum service band Width, whether to allow at least one of the service optimization indication information.
  • the PCRF provided by the embodiment of the present invention is the execution device of the service distribution control method provided by the present invention.
  • the PCRF provided by the embodiment of the present invention dynamically determines the service transmission control policy and the service optimization control policy according to the service information, the user subscription information, and the network status of the service requested by the terminal, and sends the service transmission control policy to the PCEF to enable the PCEF.
  • Resource allocation is performed on the service of the terminal; the service optimization control policy is sent to the CDF, so that the CDF optimizes the service transmitted to the terminal. Therefore, different services of different users can be used to occupy the network resources reasonably, and the service content is optimized to avoid network congestion and ensure the normal service experience of the user.
  • FIG. 8 is a schematic structural diagram of a flow detection function entity TDF according to an embodiment of the present invention. As shown in FIG. 8, the TDF includes: a receiver 21, a processor 22, and a transmitter 23;
  • the receiver 21 is configured to acquire a first service request of the terminal, and is further configured to receive a first service optimization control policy that is sent by the PCRF.
  • the processor 22 is configured to obtain service flow information of the terminal according to the first service request, where the service flow information includes at least a service identifier and a service flow quintuple information requested by the terminal;
  • the sender 23 is configured to report the service flow information to the policy and charging rule function entity PCRF, so that the PCRF searches for the corresponding service policy according to the service flow information, and at least one of the terminal subscription information and the network status of the terminal, and determines the first A service transmission control strategy and a first service optimization control strategy.
  • FIG 9 is a schematic structural diagram of another embodiment of the traffic detection function entity TDF provided by the present invention, as shown in Figure 9, on the basis of Figure 8, the TDF may further include a controller 24;
  • the existing functions and structures of the TDF can be extended to have the function of CDF. Specifically:
  • the controller 24 can be configured to: if the receiver receives the first service optimization control policy delivered by the PCRF, optimize the service transmitted to the terminal according to the first service optimization control policy.
  • the receiver 21 is further configured to: receive a second service optimization control policy that is sent by the PCRF;
  • the controller 24 is further configured to: if the receiver 21 receives the second optimized control policy, adjust the optimization of the service transmitted by the terminal according to the second service optimization control policy, where the second service optimization control policy is changed by the PCRF User subscription information and/or network status determination. Further, the receiver 21 is further configured to: receive the error information sent by the PCRF; the controller 24 may be further configured to: if the receiver receives the error information, stop transmitting the requested service to the terminal.
  • the processor 22 is further configured to: identify, according to the unified resource locator URL carried in the first service request, a service identifier corresponding to the service requested by the terminal, and obtain the service flow quintuple information according to the first service request.
  • the TDF can also be used only as an interface between the PCRF and the CDF, specifically:
  • the transmitter 23 is further configured to: if the receiver 21 receives the first optimized control policy, send the first control policy to the content distribution function entity CDF, or carry the first service optimization control policy in the first service request. Send to CDF.
  • the receiver 21 is further configured to: receive a second service optimization control policy that is sent by the PCRF, and is further configured to receive a second service request sent by the terminal, where the second service request and the first service request are sent by the terminal for the same service.
  • the processor 22 is further configured to: store the second service optimization control policy into the local cache; the sender 23 is further configured to: if the receiver 21 receives the second service request sent by the terminal, the local cache is stored The second service optimization control policy is sent to the CDF in the second service request; or is used to send the second service optimization control policy received by the receiver to the CDF.
  • the receiver 21 is further configured to: receive error information sent by the PCRF; the transmitter 23 may be further configured to: if the receiver receives the error information, send the error information to the CDF, or carry the error information. Sent to the CDF in the first service request.
  • the TDF provided by the embodiment of the present invention is an execution device of the service distribution control method provided by the present invention.
  • the device can be set independently or integrated with PCEF and/or CDF.
  • the TDF provided by the embodiment of the present invention may report the service flow information corresponding to the terminal service request to the PCRF, and the PCRF may dynamically determine the service optimization control policy according to the service information, the user subscription information, and the network status of the service requested by the terminal.
  • the CDF is sent to the CDF to optimize the traffic transmitted to the terminal. Therefore, different services of different users can be used to occupy the network resources reasonably, and the service content is optimized to avoid network congestion and ensure the normal service experience of the user.
  • FIG. 10 is a schematic structural diagram of a content distribution function entity CDF according to an embodiment of the present invention. As shown in FIG. 10, the CDF includes: a receiver 31 and a controller 32;
  • the receiver 31 is configured to receive a first service optimization control policy, where the first service optimization control policy is searched by the policy and charging rule function entity PCRF according to the service flow information, and at least one of the terminal subscription information and the network status of the terminal.
  • the controller 32 is configured to optimize, according to the first service optimization control policy, the service transmitted to the terminal, if the receiver receives the first service optimization control policy.
  • FIG 11 is a schematic structural diagram of another embodiment of the content distribution function entity CDF provided by the present invention.
  • the CDF may further include: a transmitter 33 and a processor 34;
  • the existing functions and structures of the CDF can be extended to have the function of TDF, specifically:
  • the receiver 31 is further configured to: obtain a first service request of the terminal;
  • the controller 32 is further configured to: obtain the service flow information of the terminal according to the first service request, where the service flow information includes at least the service identifier and the service flow quintuple information requested by the terminal;
  • the sender 33 is configured to report the service flow information to the policy and charging rule function entity PCRF, so that the PCRF searches for the corresponding service policy according to the service flow information, and at least one of the terminal subscription information and the network status of the terminal, and determines the first A service transmission control policy and a first service optimization control policy; the receiver 31 may be specifically configured to: receive the first service optimization control policy delivered by the PCRF. Further, the processor 34 may be specifically configured to: identify, according to the unified resource locator URL carried in the first service request, a service identifier corresponding to the service requested by the terminal, and obtain the service flow quintuple information according to the first service request.
  • the receiver 31 is further configured to: receive a second service optimization control policy that is sent by the PCRF, where the second service optimization control policy is determined by the PCRF according to the changed user subscription information and/or the network status;
  • the controller 32 is further configured to: if the receiver receives the second service optimization control policy, adjust the optimization of the service transmitted by the terminal according to the second service optimization control policy.
  • the receiver 31 is further configured to: receive error information sent by the PCRF; the controller 32 may be further configured to: if the receiver receives the error information, stop transmitting the requested service to the terminal.
  • the receiver 31 may be specifically configured to: receive a first service optimization control policy sent by the traffic detection function entity TDF, or receive a first service request sent by the TDF, where the first service request carries the first A business optimization control strategy.
  • the receiver 31 may be further configured to: receive a second service optimization control policy sent by the TDF, or receive a second service request sent by the TDF, where the second service request carries a second service optimization control policy, and the second service optimization
  • the control policy is determined by the PCRF according to the changed user subscription information and/or network status
  • the controller 32 is further configured to: if the receiver 31 receives the second service optimization control policy, adjust the optimization of the service transmitted to the terminal according to the second service optimization control policy.
  • the receiver 31 may be further configured to: receive the error information sent by the TDF, or receive the first service request sent by the TDF, where the first service request carries the error information;
  • the controller 32 is further configured to: if the receiver receives the error information, stop transmitting the requested service to the terminal.
  • the CDF provided by the embodiment of the present invention is an execution device of the service distribution control method provided by the present invention, and the device can be set independently or integrated with the PCEF and/or the TDF.
  • the specific process of the CDF to perform the service distribution control method refer to the method embodiment, and details are not described herein again.
  • the CDF may directly report the service flow information corresponding to the terminal service request to the PCRF or report it to the PCRF through the TDF.
  • the PCRF may be based on the service information, the user subscription information, and the network status of the service requested by the terminal. Dynamically determine the service optimization control strategy and directly deliver it to the CDF, or send it to the CDF through the TDF, so that the CDF optimizes the service transmitted to the terminal. Therefore, different services of different users can be used to occupy the network resources reasonably, and the service content is optimized to avoid network congestion and ensure the normal service experience of the users.
  • FIG. 12 is a schematic structural diagram of a policy and charging execution function entity PCEF according to an embodiment of the present invention. As shown in FIG. 12, the PCEF includes: a receiver 41 and a processor 42;
  • the receiver 41 is configured to receive a first service transmission control policy delivered by the policy and charging rule function entity PCRF, where the first service transmission control policy is used by the PCRF according to the service flow information of the service requested by the terminal, and at least the user subscription information of the terminal And one of the network states, find the corresponding business policy, and determine;
  • the processor 42 is configured to perform resource allocation on the service requested by the terminal according to the first transmission control policy. Match.
  • FIG. 13 is a schematic structural diagram of another embodiment of a policy and charging execution function entity PCEF according to the present invention. As shown in FIG. 13, on the basis of FIG. 12, the PCEF may further include: a transmitter 43;
  • the sender 43 may be configured to return a response message to the PCRF, where the response message is used to indicate that the service resource allocation requested by the terminal is successful, so that the PCRF sends the first service optimization control policy to the content distribution function entity CDF, or a response message. And indicating that the service resource allocation request to the terminal fails, so that the PCRF sends an error message to the CDF, where the first service optimization control policy is searched by the PCRF according to the service flow information, and at least one of the terminal subscription information and the network status of the terminal.
  • Business strategy ok.
  • the receiver 41 is further configured to: receive a second service transmission control policy that is sent by the PCRF, where the second service transmission control policy is determined by the PCRF according to the changed user subscription information and/or the network status;
  • the processor 42 is further configured to: adjust resource allocation of the service requested by the terminal according to the second service transmission control policy.
  • the PCEF provided by the embodiment of the present invention is an execution device of the service distribution control method provided by the present invention, and the device may be independently set, or may be integrated with the CDF and/or the TDF.
  • the specific process of the CDF to perform the service distribution control method refer to the method embodiment, and details are not described herein again.
  • the PCEF and the PCEF provided by the embodiment of the present invention can dynamically determine the service transmission control policy according to the service information, the user subscription information, and the network status of the service requested by the terminal, and send the policy to the PCEF, so that the PCEF allocates resources to the service transmitted by the terminal. . Therefore, different services of different users are used to properly occupy network resources, and the service content is optimized to avoid network congestion and ensure normal user experience.

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Abstract

Des modes de réalisation de la présente invention concernent un procédé et un dispositif de commande de fourniture de services. Le procédé consiste : à acquérir des informations de flux de services d'un terminal ; les informations de flux de services comprenant au moins un identifiant d'un service demandé par le terminal et des informations de quintuple de flux de services ; sur la base des informations de flux de services, et d'au moins l'un du terminal, d'une information d'abonnement de l'utilisateur et d'un état du réseau, à rechercher une règle de service prédéterminée et à déterminer une première règle de commande de transmission de services et une première règle de commande d'optimisation de service ; à envoyer la première règle de commande de transmission de services à une entité à fonction de mise en application des règles et des tarifs (PCEF, Policy and Charging Enforcement Function), à permettre à l'entité PCEF d'allouer au service demandé par le terminal, sur la base de la première règle de commande de transmission de services, une ressource, et à envoyer la première règle de commande d'optimisation de services à une entité à fonction de fourniture de contenu (CDF, Content Delivery Function), à permettre à l'entité CDF d'optimiser, sur la base de la première règle de commande d'optimisation de services, un service transmis au terminal.
PCT/CN2011/082102 2011-11-11 2011-11-11 Procédé et dispositif de commande de fourniture de services WO2012167546A1 (fr)

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