WO2016023363A1 - Procédé et appareil de traitement de chaîne de service, classificateur de service et pcrf - Google Patents

Procédé et appareil de traitement de chaîne de service, classificateur de service et pcrf Download PDF

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Publication number
WO2016023363A1
WO2016023363A1 PCT/CN2015/074633 CN2015074633W WO2016023363A1 WO 2016023363 A1 WO2016023363 A1 WO 2016023363A1 CN 2015074633 W CN2015074633 W CN 2015074633W WO 2016023363 A1 WO2016023363 A1 WO 2016023363A1
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user
service
service chain
policy
congestion
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PCT/CN2015/074633
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English (en)
Chinese (zh)
Inventor
周晓云
陶峑郡
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中兴通讯股份有限公司
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Publication of WO2016023363A1 publication Critical patent/WO2016023363A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control

Definitions

  • the present invention relates to the field of communications, and in particular, to a service chain processing method, apparatus, service classifier, and PCRF.
  • FIG. 1 is a schematic diagram of a Policy and Charging Control (PCC) defined by a 3rd Generation Partnership Project (3GPP) in the related art, as shown in FIG.
  • the Policy and Charging Rules Function (PCRF) is used to define the Quality of Service (QoS) and the charging policy for the service using network resources.
  • the PCRF needs to combine the service information received from the AF, the user subscription information received from the Subscription Profile Repository (SPR), the policy configured by the operator, and the like.
  • the PCRF sends the control policy for the service to the Policy and Charging Enforcement Function (PCEF) or the Bearer Binding and Event Report Function (BBERF).
  • PCEF Policy and Charging Enforcement Function
  • BBERF Bearer Binding and Event Report Function
  • the PCRF can subscribe to the bearer layer related events to the PCEF and/or the BBERF to sense in time when the bearer layer occurs, and change the control strategy.
  • the PCEF and the Traffic Detection Function can perform application detection according to the PCC rules (PCEF) or Application Detection and Control (ADC) rules (TDF) delivered by the PCRF. control function.
  • PCEF PCC rules
  • ADC Application Detection and Control
  • the RAN Congestion Awareness Function (RCAF) is used to collect the user plane congestion information of the RAN and report it to the PCRF to formulate a congestion mitigation policy.
  • FIG. 2 is a schematic diagram of a dynamic service chain according to the related art. , as shown in Figure 2, where
  • the PCRF As a service chain selection decision entity, the PCRF has the following two functions: receiving the logical service chain description delivered by the configuration management system (Orchestrator), and the user attributes/access types/service types/service chain weights corresponding to the logical service chain. Information, thereby obtaining a static policy corresponding to the service chain; obtaining the subscription information of the user from the SPR, obtaining the dynamic access information of the user from the GGSN/PGW, and combining the static policy corresponding to the service chain obtained above Slightly, the decision is for the user to select a logical service chain, and the logical service chain description is notified to the Traffic Classifier in the user's access process;
  • Traffic Classifier (which can be integrated on the gateway or integrated on the TDF): detects the service flow of the user according to the flow detection rule delivered by the PCRF, and determines the logical service chain corresponding to the service flow, and identifies the corresponding logical service chain.
  • the physical routing label is marked on the data packet of the service data stream after the physical routing label corresponding to the logical service chain is obtained by marking the data packet of the service data stream.
  • the data packets of this service data stream can be dynamically routed to the corresponding enabler (Enabler).
  • the service chain of the service data flow needs to be determined according to the state of the radio access network (such as congestion), that is, the service chain is different when the cell is congested and not congested or at different levels of congestion.
  • the state of the radio access network such as congestion
  • congestion an Enabler that needs to increase data compression.
  • the PCRF when congestion occurs in an area where the user is located, the PCRF separately adjusts the service chain separately for each user, causing a problem of large signaling load.
  • the present invention provides a service chain processing method, device, service classifier and PCRF, to at least solve the related art, when the user is in an area where congestion occurs, the PCRF separately adjusts the service chain separately for each user. This causes a problem of large signaling load.
  • a method for processing a service chain includes: receiving a dynamic service chain policy for a service accessed by a user delivered by a policy and a charging rule function PCRF, wherein the dynamic service chain policy includes Determining a congestion status of the area in which the user is located, and a service chain corresponding to the congestion status; acquiring user information of the user delivered by the PCRF and current congestion status of the area where the user is located; according to the user information and the user The current congestion status of the area in which the current service chain of the service accessed by the user is determined.
  • the dynamic service chain policy for the service accessed by the user that is sent by the PCRF is received by at least one of the following manner: receiving an IP-CAN session establishment of the PCRF in the user's IP connection access network Policy and accounting PCC rules containing the dynamic service chain policy delivered during or after the establishment; received
  • the PCRF sends and controls the ADC rules in the application that includes the dynamic service chain policy delivered during or after the establishment of the service detection function TDF session of the user.
  • the user information of one or more users and the current congestion status of the area in which the one or more users are located are simultaneously acquired from the PCRF in one message.
  • determining the current service chain of the service accessed by the user according to the user information and the current congestion status of the area where the user is located including: determining a dynamic service chain policy of the user according to the user information; The current congestion status of the area in which the user is located and the determined dynamic service chain policy of the user determine a current service chain of the service accessed by the user.
  • the service chain is represented by a logical service chain identifier.
  • the user information is a user identifier and/or an IP address.
  • a service chain processing method including: transmitting, to a service classifier, a dynamic service chain policy for a service accessed by a user, where the dynamic service chain policy includes an area where the user is located a congestion state and a service chain corresponding to the congestion state; and transmitting, to the service classifier, user information of the user and a current congestion state of the area where the user is located, where the user information and the user area
  • the current congestion status is used to determine the current service chain of the service accessed by the user.
  • the dynamic service chain policy for the service accessed by the user is sent to the service classifier by at least one of: including the dynamic service chain policy in the policy and charging PCC rule and in the IP of the user
  • the connection access network IP-CAN session establishment process or the post-establishment is sent to the service classifier; the dynamic service chain policy is included in the application detection and control ADC rule and the TDF session of the service detection function of the user
  • the service classifier is sent to the service class during or after the establishment.
  • the method further includes: receiving a notification message that the congestion status of the area where the user is located is changed, where The change in the congestion state includes at least one of: from congestion to non-congestion, from congestion to congestion, and a change in congestion level.
  • a service chain processing apparatus including: a first receiving module, configured to receive a dynamic service chain policy for a service accessed by a user delivered by a policy and a charging rule function PCRF, where The dynamic service chain policy includes a congestion status of the area where the user is located, and a service chain corresponding to the congestion status.
  • the first acquiring module is configured to acquire the user information and the user information delivered by the PCRF.
  • the first determining module is configured to determine a current service chain of the service accessed by the user according to the user information and the current congestion status of the area where the user is located.
  • the first receiving module is further configured to receive, by at least one of the following manners, the dynamic service chain policy delivered by the PCRF for a service accessed by a user: receiving the PCRF at the user
  • the policy and the charging PCC rule including the dynamic service chain policy delivered during or after the IP-CAN session establishment process, and the establishment of the TCF session establishment process of the service detection function of the PCRF in the user
  • the apparatus further includes: the first determining module, configured to determine, according to the user information, a dynamic service chain policy of the user, according to a current congestion state of the area where the user is located, and the determined dynamic A business chain policy that determines the current business chain of the business accessed by the user.
  • the first determining module configured to determine, according to the user information, a dynamic service chain policy of the user, according to a current congestion state of the area where the user is located, and the determined dynamic A business chain policy that determines the current business chain of the business accessed by the user.
  • a service classifier comprising the service chain processing device of any of the above.
  • a service detection function entity TDF including the service classifier described above.
  • a policy and charging execution function entity PCEF is provided, including the service classifier described above.
  • a service chain processing apparatus comprising: a first sending module, configured to deliver a dynamic service chain policy for a service accessed by a user to a service classifier, wherein the dynamic service
  • the chain policy includes a congestion status of the area where the user is located, and a service chain corresponding to the congestion status.
  • the second delivery module is configured to send the user information of the user and the current congestion status of the area where the user is located, where The user information and the current congestion status of the area in which the user is located are used to determine the current service chain of the service accessed by the user.
  • the first sending module is further configured to send a dynamic service chain policy for the service accessed by the user to the service classifier by at least one of: including the dynamic service chain policy in the policy and the meter
  • the fee-based PCC rule is sent to the service classifier during or after the IP-CAN session establishment process of the user's IP connection access network; and the dynamic service chain policy is included in the application detection and control ADC rule. And being sent to the service classifier during or after the establishment of the service detection function TDF session of the user.
  • the device further includes: a second receiving module, configured to receive a notification message that the congestion status of the area where the user is located changes, wherein the change of the congestion status includes at least one of: from congestion to non-congestion, From congestion to congestion, congestion levels change.
  • a second receiving module configured to receive a notification message that the congestion status of the area where the user is located changes, wherein the change of the congestion status includes at least one of: from congestion to non-congestion, From congestion to congestion, congestion levels change.
  • a policy and charging rule function entity PCRF comprising the service chain processing apparatus of any of the above.
  • the dynamic service chain policy for the service accessed by the user is delivered by the PCRF and the charging rule function, wherein the dynamic service chain policy includes the congestion state of the area where the user is located and corresponds to the congestion state.
  • the service chain of the user that is sent by the PCRF and the current congestion status of the area where the user is located; determining the access by the user according to the user information and the current congestion status of the area where the user is located.
  • the current service chain solves the related technology.
  • the PCRF adjusts the service chain separately for each user, causing a problem of large signaling load, thereby effectively reducing congestion.
  • the effect of a large amount of signaling that is triggered when the service chain is updated when the status changes.
  • FIG. 1 is a schematic diagram of a PCC of a policy and charging control architecture defined by the 3GPP Partnership Project 3GPP in the related art
  • FIG. 2 is a schematic diagram of a dynamic service chain according to the related art
  • FIG. 3 is a flowchart of a first method of processing a service chain according to an embodiment of the present invention
  • FIG. 4 is a flowchart of a second method of service chain processing according to an embodiment of the present invention.
  • FIG. 5 is a structural block diagram of a service chain processing apparatus 1 according to an embodiment of the present invention.
  • FIG. 6 is a structural block diagram of a traffic classifier according to an embodiment of the present invention.
  • FIG. 7 is a structural block diagram of a service detection function entity TDF according to an embodiment of the present invention.
  • FIG. 8 is a structural block diagram of a policy and charging execution function entity PCEF according to an embodiment of the present invention.
  • FIG. 9 is a structural block diagram of a service chain processing apparatus 2 according to an embodiment of the present invention.
  • FIG. 10 is a block diagram showing a preferred structure of a service chain processing apparatus 2 according to an embodiment of the present invention.
  • FIG. 11 is a structural block diagram of a policy and charging rule function entity PCRF according to an embodiment of the present invention.
  • FIG. 12 is a flowchart of a PCRF indicating a TDF update service chain when a Traffic Classifier is located on a TDF according to a preferred embodiment 1 of the present invention
  • FIG. 13 is a flow chart of the PCRF instructing the PCEF to update the service chain when the Traffic Classifier described in this embodiment of the preferred embodiment 2 is located on the PCEF.
  • FIG. 3 is a flowchart of a service chain processing method according to an embodiment of the present invention. As shown in FIG. 3, the process includes the following steps:
  • Step S302 Receive a dynamic service chain policy that is sent by the user and the policy that is sent by the PCRF, and the dynamic service chain policy includes a congestion state of the area where the user is located and a service chain corresponding to the congestion state, where The service chain can be represented by a logical service chain identifier;
  • Step S304 the user information of the user delivered by the PCRF and the current congestion status of the area where the user is located are obtained, where the user information may be a user identifier and/or an IP address;
  • Step S306 Determine the current service chain of the service accessed by the user according to the user information and the current congestion status of the area where the user is located.
  • the corresponding service chain is determined according to the changed congestion state, and when the congestion changes in the related art, a need is needed.
  • the update of the user's service chain in one place not only solves the problem in the related art, when the user is in the area where the congestion occurs, the PCRF adjusts the service chain separately for each user, causing a problem of large signaling load, and further The effect of effectively reducing a large amount of signaling caused when the service chain is updated when the congestion state changes is achieved.
  • the dynamic service chain policy for the user that is sent by the PCRF and the function of the charging policy can be used in multiple ways.
  • the dynamic service chain policy for the service accessed by the user sent by the PCRF can be received by at least one of the following methods. : For example, receiving a PCRF in the user's IP connection access network IP-CAN session establishment
  • the policy and the charging PCC rule that are sent in the process or after the establishment, and the dynamic service chain policy is included in the TDF session establishment process of the user's service detection function.
  • the application detects and controls the ADC rules.
  • the user information of the user delivered by the PCRF and the current congestion status of the user's area are obtained, multiple methods may also be used. For example, the user information of one or more users may be acquired from the PCRF in a message. And the current congestion status of the area in which one or more users are located.
  • the method may be adopted.
  • the user information may be determined first.
  • the dynamic service chain policy of the user the current service chain of the service accessed by the user is determined according to the current congestion state of the user area and the determined dynamic service chain policy of the user.
  • the congestion information of the congestion status of the area where the user is located may also be received, where the congestion status changes include at least one of the following : From congestion to non-congestion, from congestion to congestion, and congestion levels change.
  • FIG. 4 is a flowchart of a service chain processing method 2 according to an embodiment of the present invention. As shown in FIG. 4, the process includes the following steps:
  • Step S402 the dynamic service chain policy for the service accessed by the user is delivered to the service classifier, where the dynamic service chain policy includes a congestion state of the area where the user is located and a service chain corresponding to the congestion state;
  • Step S404 the user information of the user and the current congestion status of the area where the user is located are delivered to the service classifier, where the user information and the current congestion status of the area where the user is located are used to determine the current service chain of the service accessed by the user.
  • the dynamic service chain policy for the user is delivered to the service classifier, and the user information of the user and the current congestion state of the user's area are determined.
  • the congestion state of the user area changes, the congestion state is determined according to the changed congestion state.
  • the corresponding service chain needs to update the user's service chain one by one when the congestion changes in the related technology, which not only solves the related technology, but also causes the PCRF to collide each time when the user is in a region where congestion occurs.
  • the user separately adjusts the service chain, which causes a problem of large signaling load, and thus achieves an effect of effectively reducing a large amount of signaling caused when the service chain is updated when the congestion state changes.
  • the dynamic service policy when the dynamic service policy is delivered to the service classifier, a plurality of methods may be used.
  • the dynamic service chain policy for the service accessed by the user may be delivered to the service classifier in at least one of the following manners:
  • the chain policy is included in the policy and accounting PCC rules and is in the user's IP connection access network IP-CAN
  • the session is established or sent to the service classifier.
  • the dynamic service chain policy is included in the application detection and control ADC rule and is sent to the service classifier during or after the establishment of the service detection function TDF session.
  • the notification message that the congestion status of the user's area is changed is received, where the change of the congestion status includes at least one of the following: From congestion to non-congestion, from congestion to congestion, and congestion levels change.
  • a service chain processing device is also provided, which is used to implement the foregoing embodiments and preferred embodiments, and has not been described again.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • FIG. 5 is a structural block diagram of a service chain processing apparatus 1 according to an embodiment of the present invention. As shown in FIG. 5, the apparatus includes a first receiving module 52, a first obtaining module 54, and a first determining module 56. Be explained.
  • the first receiving module 52 is configured to receive a dynamic service chain policy for the service accessed by the user, which is sent by the policy and the charging rule function, and the dynamic service chain policy includes a congestion state of the area where the user is located and a corresponding state of the congestion state.
  • the first obtaining module 56 is configured to obtain the user information of the user delivered by the PCRF and the current congestion status of the area where the user is located.
  • the first determining module 56 is connected to the first receiving module 52 and the first acquiring module 54. The setting is to determine the current service chain of the service accessed by the user according to the user information and the current congestion status of the user area.
  • the first receiving module 52 is further configured to receive, by at least one of the following manners, a dynamic service chain policy for the user delivered by the PCRF: receiving the PCRF in the IP-CAN session establishment process of the user's IP connection access network Or the policy and charging PCC rules that are sent after the establishment of the dynamic service chain policy; and the application detection and control ADC that includes the dynamic service chain policy that is sent by the PCRF during the establishment or after the establishment of the TDF session of the user. rule.
  • a dynamic service chain policy for the user delivered by the PCRF : receiving the PCRF in the IP-CAN session establishment process of the user's IP connection access network Or the policy and charging PCC rules that are sent after the establishment of the dynamic service chain policy; and the application detection and control ADC that includes the dynamic service chain policy that is sent by the PCRF during the establishment or after the establishment of the TDF session of the user. rule.
  • the first determining module 56 is further configured to: after determining the dynamic service chain policy of the user according to the user information, determine the current state of the service accessed by the user according to the current congestion state of the user area and the determined dynamic service chain policy. Business chain.
  • FIG. 6 is a structural block diagram of a service classifier according to an embodiment of the present invention. As shown in FIG. 6, the service classifier 60 includes the service chain processing device 62 of any of the above.
  • FIG. 7 is a structural block diagram of a service detection function entity TDF according to an embodiment of the present invention. As shown in FIG. 7, the service detection function entity TDF 70 includes the service classifier 60 described above.
  • FIG. 8 is a structural block diagram of a policy and charging execution function entity PCEF according to an embodiment of the present invention. As shown in FIG. 8, the policy and charging execution function entity PCEF90 includes the service classifier 60 described above.
  • FIG. 9 is a structural block diagram of a service chain processing apparatus 2 according to an embodiment of the present invention. As shown in FIG. 9, the apparatus includes: a first sending module 92 and a second sending module 94, which are described below.
  • the first sending module 92 is configured to deliver a dynamic service chain policy for the service accessed by the user to the service classifier, where the dynamic service chain policy includes a congestion state of the area where the user is located and a service chain corresponding to the congestion state;
  • the second sending module 94 is configured to send the user information of the user and the current congestion status of the area where the user is located, where the user information and the current congestion status of the area where the user is located are used for the current service chain of the service accessed by the user determined by the service classifier. .
  • the first sending module 92 is further configured to deliver a dynamic service chain policy for the service accessed by the user to the service classifier by at least one of: including the dynamic service chain policy in the policy and charging PCC rules. It is sent to the service classifier during or after the establishment of the IP-CAN session of the user's IP connection access network; the dynamic service chain policy is included in the application detection and control ADC rules and the TDF session establishment process in the user's service detection function The medium or the establishment is sent to the service classifier.
  • FIG. 10 is a block diagram showing a preferred structure of a service chain processing apparatus 2 according to an embodiment of the present invention. As shown in FIG. 10, the apparatus includes a second receiving module 102 in addition to all the modules shown in FIG. The third receiving module 102 is described.
  • the second receiving module 102 is connected to the second sending module 94, and is configured to receive a notification message that the congestion status of the area where the user is located changes, wherein the change of the congestion status includes at least one of: from congestion to non-congestion, from There is no congestion, congestion, and congestion levels change.
  • FIG. 11 is a structural block diagram of a policy and charging rule function entity PCRF according to an embodiment of the present invention. As shown in FIG. 11, the PCRF 110 includes the service chain processing device 112 of any of the above.
  • the PCRF pre-delivers a dynamic service chain policy for each user to the service classifier, and reports the congestion condition and the corresponding service chain identifier in the policy;
  • the user list of the user and the new congestion status information are sent by the PCRF, and the specific new congestion status information of the service classifier determines the current service chain identifier.
  • the PCRF When the Traffic Classifier described in this embodiment is located on the TDF, the PCRF indicates that the TDF updates the scenario of the service chain.
  • 12 is a flowchart of a PCRF indicating a TDF update service chain when a Traffic Classifier is located on a TDF according to a preferred embodiment 1 of the present invention. As shown in FIG. 12, the process of performing policy control includes the following steps:
  • Step 1201 The user equipment UE1 is attached to the network, initiates an attach procedure, or the UE1 initiates an additional PDN connection establishment procedure.
  • the gateway where the PCEF is located receives the above request message;
  • Step 1202 After receiving the attach request or the PDN connection establishment request, the PCEF initiates an IP-CAN session establishment request to the PCRF, and provides the PCRF with information such as a user identifier, a PDN identifier, and an IP address.
  • Step 1203 If there is no defined user subscription information, the PCRF obtains user subscription information, such as user level, bandwidth allocated to the user, service allowed by the user, service chain, and the like, from the SPR (Subscription Profile Repository). ;
  • Step 1204 The PCRF performs a policy decision, and the PCRF sends a TDF session establishment request message to the TDF, where the message carries the ADC rule newly defined in the embodiment of the present invention, and the current congestion status, the user identifier, and the IP address of the UE.
  • Sources of information for PCRF policy decisions include, but are not limited to, user subscriptions from SPRs, information reported from PCEFs, and policies configured in PCRF. This strategy is dynamically determined.
  • Diameter AVP format corresponding to the ADC rule is as follows:
  • Alternative-Policy AVP is a Grouped AVP with the following format:
  • Congestion-Condition AVP is an enumerated (Enumerated) type of parameter. Values indicate different congestion conditions. There can be 2 values, NON-CONGESTED and CONGESTED. It can also be multiple values, such as NON-CONGESTED, LIGHT-CONGESTED, MIDDLE-CONGESTIED, HEAVY-CONGESTED.
  • the newly defined ADC-Rule-Definition can contain 0 or more optional Alternative-Policy instances, and each Alternative-Policy corresponds to a different value of Congestion-Condition.
  • the ADC-Rule-Definition carries the Alternative-Policy AVP, the Service-Chain-Identifier originally in the ADC-Rule-Definition may not be carried.
  • Step 1205 The ADC rules issued by the TDF installation
  • Step 1206 The TDF returns an acknowledgement message to the PCRF.
  • Step 1207 The PCRF returns a successful response to the IP-CAN session establishment to the PCEF, which carries the PCC rule.
  • Step 1208 The gateway where the PCEF is located returns an attach request or a response message for establishing a PDN connection request to the UE.
  • Step 1209 The TDF performs application detection according to the issued ADC rule, and determines the service chain identifier corresponding to the service data flow according to the congestion state information currently sent by the PCRF.
  • the PCRF can initiate an update of the ADC rules and update the optional parameter set at any time after the TDF session is established.
  • Step 1210 Another UE2 attaches to the network, initiates an attach procedure, or UE2 initiates an additional PDN connection setup procedure. Perform the same procedure from step 201 to step 208. That is, the process of step 201-step 208 is repeatedly performed for all requests for establishing a PDN connection to the same PDN.
  • the PCRF is directed to the ADC rules issued by the IP-CAN sessions of the multiple users, and the TDF determines the service chain identifiers of the service data flows of the IP-CAN sessions according to the congestion status delivered by the PCRF.
  • Step 1211 The PCRF acquires congestion information (RUCI) from the RCAF, and obtains an area where the congestion status changes and a list of users under the area. Congestion state changes range from congestion to non-congestion, from congestion to congestion, or changes in congestion levels.
  • RUCI congestion information
  • Step 1212 The PCRF sends a policy update request message to the TDF, where the message carries the current congestion status and the affected user list.
  • the user list is a list of user identities and/or a list of IP addresses of the UE.
  • Step 1213 The TDF returns a determination message to the PCRF.
  • Step 1214 The TDF determines the affected ADC rule according to the user list, and matches the current congestion state with the Congestion-Condition AVP in the ADC rule to determine the current service chain identifier of the corresponding service data.
  • the service data link identifier of the service data flow in the uplink direction or the downlink direction may be determined according to different deployment positions of the TDF. For example, if the service data stream passes through the gateway and arrives at the TDF and arrives at the service node, the TDF determines the service chain identifier in the uplink direction of the service data stream; or the service data arrives at the TDF from the external PDN network and then passes through the service node, then the TDF determines the service.
  • the service chain identifier of the downstream direction of the data stream may be determined according to different deployment positions of the TDF. For example, if the service data stream passes through the gateway and arrives at the TDF and arrives at the service node, the TDF determines the service chain identifier in the uplink direction of the service data stream; or the service data arrives at the TDF from the external PDN network and then passes through the service node, then the TDF determines the service.
  • the service chain identifier of the downstream direction of the data stream may be determined according to different deployment positions of the
  • FIG. 13 is a flowchart of a PCRF indicating a PCEF update service chain when the Traffic Classifier is located on the PCEF according to the embodiment of the present invention. As shown in FIG. 13, the process of performing policy control includes the following steps:
  • Step 1301 The user equipment UE1 is attached to the network, initiates an attach procedure, or the UE1 initiates another PDN connection establishment procedure.
  • the gateway where the PCEF is located receives the above request message;
  • Step 1302 After receiving the attach request or the PDN connection establishment request, the PCEF initiates an IP-CAN session establishment request to the PCRF, and provides the PCRF with information such as a user identifier, a PDN identifier, and an IP address.
  • Step 1303 If there is no defined user subscription information, the PCRF obtains user subscription information from the SPR (Subscription Profile Repository), such as user level, bandwidth allocated to the user, service allowed by the user, and service chain. ;
  • SPR Subscribescription Profile Repository
  • Step 1304 The PCRF makes policy decisions and formulates PCC rules.
  • the PCC rules formulated therein include the newly defined PCC rules and the current congestion status.
  • Sources of information for PCRF policy decisions include, but are not limited to, user subscriptions from SPRs, information reported from PCEFs, and policies configured in PCRF. This strategy is dynamically determined.
  • a PCC rule is usually a policy control and charging for a service data flow.
  • the corresponding Diameter AVP structure of the PCC rule in the related art is as follows:
  • the present invention will further extend the PCC rules as described below:
  • Alternative-Policy AVP is a Grouped AVP with the following format:
  • Congestion-Condition AVP is an enumerated (Enumerated) type of parameter. Values indicate different congestion conditions. There can be 2 values, NON-CONGESTED and CONGESTED. It can also be multiple values, such as NON-CONGESTED, LIGHT-CONGESTED, MIDDLE-CONGESTIED, HEAVY-CONGESTED.
  • the newly defined Charging-Rule-Definition can contain 0 or more optional Alternative-Policy instances, and each Alternative-Policy corresponds to a different value of Congestion-Condition.
  • the Charging-Rule-Definition carries the Alternative-Policy AVP, the Service-Chain-Identifier originally in the Charging-Rule-Definition cannot be carried.
  • Step 1305 PCC rules issued by the PCEF installation
  • Step 1306 The gateway where the PCEF is located returns an attach request or a response message for establishing a PDN connection request to the UE.
  • Step 1307 The PCEF performs application detection according to the issued PCC rule, and determines the service chain identifier corresponding to the detected service data flow according to the congestion state information currently sent by the PCRF.
  • the PCRF can initiate an update of the PCC rules and update the optional parameter set at any time after the IP-CAN session is established.
  • Step 1308 Another UE2 attaches to the network, initiates an attach procedure, or UE2 initiates an additional PDN connection setup procedure.
  • the same process is performed in step 1301 - step 1307. That is, the process of step 1301 - step 1308 is repeatedly performed for all requests to establish a PDN connection to the same PDN.
  • the PCRF sends a PCC rule to the IP-CAN session of multiple users, and the PCEF determines the service chain identifier of the service data flow of these IP-CAN sessions according to the congestion status delivered by the PCRF.
  • Step 1309 The PCRF acquires congestion information (RUCI) from the RCAF, and acquires an area where the congestion status changes and a list of users under the area. Congestion state changes range from congestion to non-congestion, from congestion to congestion, or changes in congestion levels.
  • RUCI congestion information
  • Step 1310 The PCRF sends a policy update request message to the PCEF, where the message carries the current congestion status and the affected user list.
  • the user list is a list of user identities and/or a list of IP addresses of the UE.
  • Step 1311 The PCEF returns a determination message to the PCRF.
  • Step 1312 The PCEF determines the affected PCC rule according to the user list, and matches the current congestion state with the Congestion-Condition AVP in the PCC rule to determine the current service chain identifier of the corresponding service data.
  • modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the PCRF when congestion occurs in an area where the user is located, the PCRF adjusts the service chain separately for each user, causing a large signaling load. In turn, the effect of effectively reducing a large amount of signaling caused when the service chain is updated when the congestion state changes is achieved.

Landscapes

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

Abstract

L'invention concerne un procédé et un appareil de traitement de chaîne de service, un classificateur de service et une PCRF. Le procédé consiste à : recevoir une politique de chaîne de service dynamique délivrée par une fonction de contrôle de politique et de tarification (PCRF) et concernant un service auquel accède un utilisateur, la politique de chaîne de service dynamique comprenant un état d'encombrement d'une région dans laquelle se trouve l'utilisateur et une chaîne de service correspondant à l'état d'encombrement ; acquérir des informations d'utilisateur concernant l'utilisateur et l'état d'encombrement courant de la région dans laquelle se trouve l'utilisateur qui sont émis par la PCRF ; et selon les informations d'utilisateur et l'état d'encombrement courant de la région dans laquelle se trouve l'utilisateur, déterminer une chaîne de service courante du service auquel accède l'utilisateur. Au moyen de la présente invention, le problème de fortes charges de signalisation dues au fait que la PCRF actualise respectivement et séparément la chaîne de service pour divers utilisateurs lorsqu'un encombrement survient dans la région dans laquelle se trouvent les utilisateurs dans l'état de la technique est résolu, ce qui permet d'obtenir l'effet de réduire efficacement une grande quantité de signalisation déclenchée lorsque la chaîne de service est mise à jour lorsque l'état d'encombrement change.
PCT/CN2015/074633 2014-08-14 2015-03-19 Procédé et appareil de traitement de chaîne de service, classificateur de service et pcrf WO2016023363A1 (fr)

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