CN110048873A

CN110048873A - The method and communication device of the policy control of more anchor point protocol Data Unit sessions

Info

Publication number: CN110048873A
Application number: CN201810041748.4A
Authority: CN
Inventors: 丁辉
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-01-16
Filing date: 2018-01-16
Publication date: 2019-07-23
Also published as: WO2019141169A1

Abstract

The application provides the method and communication device of a kind of policy control of more anchor point protocol Data Unit sessions, this method comprises: conversation management functional SMF network element receives the first policy information that policy control functions PCF network element is sent and instruction information, which is used to indicate the anchor point PSA for executing the PDU session of the corresponding strategy of first policy information；SMF network element sends second policy information to the PSA, which is used to indicate the PSA implementation strategy.The method of the policy control of more anchor point protocol Data Unit sessions provided by the present application, when solving the PDU session of more PSA, SMF can not judge that the rule formulated needs the problem of which PSA is executed.It avoids and useless or wrong rule is installed on certain PSA.Improve the normal communication quality and user experience of user.Save the communication resource.

Description

The method and communication device of the policy control of more anchor point protocol Data Unit sessions

Technical field

This application involves the communications fields, more specifically, are related to a kind of strategy control of more anchor point protocol Data Unit sessions The method and communication device of system.

Background technique

In the 5th third-generation mobile communication technology (5-Generation, 5G) system, user equipment (user equipment, UE protocol Data Unit (Protocol Data Unit, PDU) session is established after) accessing network, and by outside PDU session access Portion's data network.PDU session for Internet protocol (internet protocol, IP) type, conversation management functional (Session Management Function, SMF) is that PDU session selects a user plane functions (User Plane Function, UPF) it is used as Internet protocol anchor point (IP Anchor), and distribute one for UE and belong to the mutual of the UPF address pool Networking protocol fourth edition (Internet Protocol Version4, IPv4) address (address) or Internet protocol the 6th Version (Internet Protocol Version4, Ipv6) prefix (Prefix).In order to access data network nearby, in UE Mobile process, IP Anchor need to carry out gravity treatment.5G system supports a PDU session, and there are multiple protocol Data Unit meetings Talk about the scene of anchor point (PDU Session Anchor, PSA).For example, UPF1 and UPF2 are two existing for a PDU session of UE A PSA.

After establishing the PDU session of more PSA, for example, UE can pass through UPF1 or UPF2 and execute corresponding strategy or rule Then carry out business access.Information of policy control functions (Policy Control function, the PCF) basis from application layer, For UE generate strategy charging control (Policy and Charging Control, PCC) rule, and by the PCC made rule It is sent to SMF, the corresponding PCC rule of different UPF may be different.In addition, operator configures the network strategy on PCF, May may require that network strategy when accessing data network by different UPF be it is different, therefore, for different UPF, The network strategy (strategy relevant to PDU session) that PCF is formulated may be also not identical.When SMF from PCF receive PCC rule and After strategy relevant to PDU session, SMF is needed according to PCC rule and/or the relevant rule of policy development relevant to PDU session Then.But SMF can not judge that these rule needs formulated execute on which UPF at present, can not naturally also know will formulate Rule which UPF be sent to.It causes communication to be likely to occur mistake, influences user communication quality and experience.

Summary of the invention

The application provides the method and communication device of a kind of policy control of more anchor point protocol Data Unit sessions, solves When the PDU session of more PSA, SMF can not judge that the rule formulated needs the problem of executing on which PSA.Avoid certain PSA The useless or wrong rule of upper installation.Improve the normal communication quality and user experience of user.Save the communication resource.

In a first aspect, providing a kind of method of the policy control of more anchor point protocol Data Unit sessions, comprising: session pipe It manages function SMF network element and receives the first policy information and indicate information that policy control functions PCF network element is sent, which uses The anchor point PSA of the PDU session of the corresponding strategy of first policy information is executed in instruction；Optionally, the SMF network element according to this One policy information determines the second policy information；The SMF network element sends second policy information to the PSA, second policy information It is used to indicate the PSA and executes the strategy.

The method of the policy control for more anchor point protocol Data Unit sessions that first aspect provides, in the PDU of terminal device Session when SMF reception PCF issues the first policy information, carries there are in the case where more anchor points and indicates the execution first strategy The instruction information of the PSA of information corresponding tactful (rule).SMF in this way can know according to first policy information formulation Rule needs to execute on which PSA.SMF formulates the second policy information according to first policy information.Second policy information Including tactful (rule) corresponding with first policy information.And the second policy information made is sent to corresponding PSA. PSA receives the second policy information, and it is corresponding tactful (rule) just to execute the second policy information.Solving SMF can not judge to make Fixed strategy (rule) needs the problem of executing on which PSA.It avoids and useless or wrong rule is installed on certain UPF Then.Ensure that user normally can correctly communicate, improves the communication quality and user experience of user.Save the communication resource.

In a kind of possible implementation of first aspect, first policy information of execution indicated by the instruction information The anchor point PSA of the PDU session of corresponding strategy, for all PSA or part PSA of the PDU session.In this implementation, The rule of formulation just according to the instruction information, is issued corresponding PSA and executed by SMF.In this way, SMF can be according to practical visit The different corresponding rules of PSA is sent to different PSA by the difference of the PSA of the business or process asked.It avoids certain The problem of communication mistake caused by useless or wrong rule is installed on UPF.Improve communication efficiency.

In a kind of possible implementation of first aspect, which includes at least one of following information: Second address letter of the first address information, the first address information of terminal installation of terminal installation after network address translation The identification information of breath, the PSA, wherein the first address information of the terminal installation is that the SMF network element is what the terminal installation distributed Address information corresponding with the PSA.In this implementation, SMF utilizes above-mentioned instruction information, and SFM can be made accurately fast Speed customizes the fixed corresponding PSA of rule really.The efficiency that SFM determines PSA is improved, the communication resource is saved, improves communication efficiency.

In a kind of possible implementation of first aspect, the identification information of the PSA includes: the corresponding data of the PSA At least one of the network function mark of network access Identifier DNAI, the PSA.In this implementation, using the DNAI of PSA Or network function mark can make SFM quickly and accurately determine the PSA of implementation strategy rule, improve SFM to determine PSA Determine the efficiency of PSA, it is easy to accomplish, save the communication resource.

In a kind of possible implementation of first aspect, which includes: strategy and charging control PCC Rule and/or strategy relevant to the PDU session.In this implementation, the first policy information includes strategy and charging control When PCC rule and/or strategy relevant to the PDU session, the second policy information that SMF can be made to formulate has better needle To property and protection, the PDU session carried out with user is adapted.Guarantee the plan executed when UE accesses business by different PSA It is slightly correct, it is ensured that user can correctly carry out the use of data or application using the strategy.Improve the accuracy of communication And user experience.

It, should be relevant to the PDU session tactful including following strategy in a kind of possible implementation of first aspect At least one of: charging policy, event trigger strategy, re-authorization time restriction strategy, is reported default charging policy Region PRA is identified and PRA element list strategy, Internet protocol IP index are tactful, authorization session polymerize maximum rate strategy, The default quality of service parameter strategy of authorization.In this implementation, SMF determines the second policy information according to these strategies.And The second policy information is issued to corresponding PSA, guarantees UE by there is not mistake when PSA access communication.Ensure that PSA is executed Strategy be accurate, it is ensured that UE can be communicated correctly by the PSA, and communication efficiency and communication quality are improved.

In a kind of possible implementation of first aspect, this method further include: the SMF network element is sent out to the PCF network element The second information is sent, which includes that the SMF is the address corresponding with the PSA that terminal installation distributes in the PDU session The identification information of information and/or the PSA.In this implementation, SMF is directed to different PSA, can determine different PCC rule Then and strategy relevant to the PDU session.Allow PSA correctly utilize corresponding strategies corresponding with itself or rule into Row communication, improves communication quality.

Second aspect provides a kind of method of the policy control of more anchor point protocol Data Unit PDU sessions, comprising: plan Slightly control function PCF network element generates the first policy information and instruction information, which is used to indicate execution first strategy The anchor point PSA of the PDU session of the corresponding strategy of information；The PCF network element sends first strategy to conversation management functional SMF network element Information and the instruction information.

The method of the policy control for more anchor point protocol Data Unit PDU sessions that second aspect provides, in terminal device PDU session when PCF issues the first policy information to SMF, carries there are in the case where more anchor points and indicates the execution first strategy The instruction information of the PSA of information corresponding tactful (rule).It is formulated in this way, SMF can know according to first policy information Rule need executed on which PSA.Solving SMF can not judge that the strategy (rule) formulated needs are held on which PSA Capable problem.It avoids and useless or wrong rule is installed on certain UPF.Ensure that user normally can correctly lead to Letter, improves the communication quality and user experience of user.Save the communication resource.

In a kind of possible implementation of second aspect, first policy information of execution indicated by the instruction information The anchor point PSA of the PDU session of corresponding strategy, for all PSA or part PSA of the PDU session.In this implementation, PCF carries the instruction information, and SMF can be made just according to the instruction information, the rule of formulation to be issued corresponding PSA and held Row.In this way, SMF can send out the different corresponding rules of PSA according to the difference of the PSA of the business or process of actual access Give different PSA.The problem of avoiding communication mistake caused by installing useless or wrong rule on certain UPF.It improves Communication efficiency.

In a kind of possible implementation of second aspect, which includes at least one of following information: Second address letter of the first address information, the first address information of terminal installation of terminal installation after network address translation The identification information of breath, the PSA, wherein the first address information of the terminal installation is that the SMF network element is what the terminal installation distributed Address information corresponding with the PSA.In this implementation, using above-mentioned instruction information, system can be quickly and accurately determined The fixed corresponding PSA of rule.The efficiency for determining PSA is improved, the communication resource is saved, improves communication efficiency.

In a kind of possible implementation of second aspect, which includes: strategy and charging control PCC Rule and/or strategy relevant to the PDU session.In this implementation, the first policy information includes strategy and charging control PCC rule and/or it is relevant to the PDU session strategy when, can make strategy have better specific aim and protection, with The PDU session that family carries out is adapted.Guarantee that the strategy executed when UE accesses business by different PSA is correct, it is ensured that use Family can correctly carry out the use of data or application using the strategy.Improve the accuracy and user experience of communication.

It, should be relevant to the PDU session tactful including following strategy in a kind of possible implementation of second aspect At least one of: charging policy, event trigger strategy, re-authorization time restriction strategy, is reported default charging policy Region PRA is identified and PRA element list strategy, Internet protocol IP index are tactful, authorization session polymerize maximum rate strategy, The default quality of service parameter strategy of authorization.In this implementation, the second policy information determined according to these strategies.Guarantee UE is not by there is mistake when PSA access communication.The strategy for ensuring that PSA is executed is accurate, it is ensured that UE can by the PSA Correctly to be communicated, communication efficiency and communication quality are improved.

In a kind of possible implementation of second aspect, this method further include: the PCF network element receives the SMF network element Send the second information, second information include the SMF be terminal installation distributed in the PDU session it is corresponding with the PSA The identification information of address information and/or the PSA, the PCF network element generate the first policy information and instruction information, comprising: the PCF net Member generates first policy information and the instruction information according to second information.Wherein, which is to be according to the SMF What the identification information for the address information corresponding with the PSA and/or the PSA that terminal installation distributes in the PDU session determined.? In the implementation, PCF is directed to different PSA, can determine different PCC rules and strategy relevant to the PDU session.Make Obtaining PSA can correctly be communicated using corresponding strategies corresponding with itself or rule, and communication quality is improved.

In a kind of possible implementation of second aspect, this method further include: the PCF network element receives application function AF The third information that network element is sent, the information and the industry of the PSA which is passed through when including terminal installation access business The information of business, wherein the PSA passed through when terminal installation access business is in the PSA that the SMF is PDU session distribution At least one, which generates the first policy information and instruction information, comprising: the PCF network element is raw according to the third information At first policy information and the instruction information.Wherein, which passed through when accessing business according to the terminal installation PSA information determine.In this implementation, different for the business of UE access, AF can notify PSA access to PCF The information of business and the information of PSA.So that PCF formulates PCC rule corresponding to the business and relevant strategy.So that UE accesses the strategy utilized when different business and is different, and mode is flexible, also, accesses PSA and execution that business is passed through PSA for the strategy of the business is identical.Improve the efficiency and accuracy when UE access different business.Improve communication efficiency And user experience, improve efficiency when UE access different business.Improve communication efficiency and user experience.

The third aspect provides a kind of communication device, including processor, memory and transceiver, for supporting the communication Device executes corresponding function in the above method.Processor, memory and transceiver are referred to by communication connection, memory storage It enables, transceiver under the driving of processor for executing specific signal transmitting and receiving, and the processor is for calling the instruction to realize The method for stating the policy control of more anchor point protocol Data Unit sessions in first aspect and its various implementations.

Fourth aspect provides a kind of communication device, including processing module, memory module and transceiver module, for supporting The communication device executes the conversation management functional network element in any possible implementation of above-mentioned first aspect or first aspect Function, function can also execute corresponding software realization by hardware realization by hardware, and hardware or software include one A or multiple modules corresponding with above-mentioned function.

5th aspect, provides a kind of communication device, including processor, memory and transceiver, for supporting the communication Device executes corresponding function in the above method.Processor, memory and transceiver are referred to by communication connection, memory storage It enables, transceiver under the driving of processor for executing specific signal transmitting and receiving, and the processor is for calling the instruction to realize The method for stating the policy control of more anchor point protocol Data Unit sessions in second aspect and its various implementations.

6th aspect, provides a kind of communication device, including processing module, memory module and transceiver module, for supporting Communication device executes the policy control functions network element in any possible implementation of above-mentioned second aspect or second aspect Function, function can also execute corresponding software realization by hardware realization by hardware, and hardware or software include one Or multiple modules corresponding with above-mentioned function.

7th aspect, provides a kind of device, which can execute institute in any one above-mentioned claim to a method The method of the policy control for the more anchor point protocol Data Unit sessions stated.Device provided by the embodiments of the present application solves more PSA PDU session when, SMF can not judge formulate rule need the problem of being executed on which PSA.It avoids and pacifies on certain PSA Fill useless or wrong rule.Improve the normal communication quality and user experience of user.Save the communication resource.

Eighth aspect, provides a kind of computer program product, and the computer program product includes: computer program generation Code, when the computer program code is run on computers, so that computer executes the method in above-mentioned various aspects.

9th aspect, provides a kind of computer-readable medium, and the computer-readable medium storage has program code, when When the computer program code is run on computers, so that computer executes the method in above-mentioned various aspects.

Tenth aspect, provides a kind of chip system, which includes processor, realizes for communication device above-mentioned Function involved in various aspects receives for example, generating, and sends, or data and/or letter involved in the processing above method Breath.In a kind of possible design, the chip system further includes memory, and the memory must for saving communication device The program instruction and data wanted.The chip system, can be made of chip, also may include chip and other discrete devices.

Detailed description of the invention

Fig. 1 is the communication system architecture of the method for the policy control suitable for more anchor point protocol Data Unit PDU sessions Schematic diagram.

Fig. 2 is the schematic flow chart for increasing a protocol Data Unit session anchor point newly by way of being inserted into bifurcation.

Fig. 3 is the schematic flow for increasing a protocol Data Unit session anchor point newly by way of being inserted into uplink classifier Figure.

Fig. 4 is the schematic of the method for the policy control of more anchor point protocol Data Unit sessions of the application one embodiment Flow chart.

Fig. 5 is the signal of the method for the policy control of more anchor point protocol Data Unit sessions of the application another embodiment Property flow chart.

Fig. 6 is the signal of the method for the policy control of more anchor point protocol Data Unit sessions of the application another embodiment Property flow chart.

Fig. 7 is the schematic of the method for the policy control of more anchor point protocol Data Unit sessions of the application one embodiment Flow chart.

Fig. 8 is the signal of the method for the policy control of more anchor point protocol Data Unit sessions of the application another embodiment Property flow chart.

Fig. 9 is the signal of the method for the policy control of more anchor point protocol Data Unit sessions of the application another embodiment Property flow chart.

Figure 10 is showing for the method for the policy control of more anchor point protocol Data Unit sessions of the application another embodiment Meaning property flow chart.

Figure 11 is the schematic block diagram of the communication device of the application one embodiment.

Figure 12 is the schematic block diagram of the communication device of the application another embodiment.

Figure 13 is the schematic block diagram of the communication device of the application one embodiment.

Figure 14 is the schematic block diagram of the communication device of the application another embodiment.

Specific embodiment

Below in conjunction with attached drawing, the technical solution in the application is described.

Fig. 1 is the wireless communication according to a kind of method of the policy control of more anchor point protocol Data Unit sessions of the application The schematic block diagram of system architecture.As shown in Figure 1, the system architecture includes terminal device, and access network equipment, management equipment, net Close equipment and data network (data network, DN).Wherein, the terminal device in Fig. 1 can be used for passing through radio open It is connected to the access network equipment of operator deployment, data network is then connected to by gateway；Access network equipment is mainly used In realizing the functions such as radio physical layer function, scheduling of resource and wireless resource management, wireless access control and mobile management； Management equipment is mainly used for facility registration, safety certification, mobile management and location management of terminal device etc., gateway master It is used to establish channel between terminal device, on that channel the data packet between forwarding terminal equipment and outer data network； Data network can correspond to a variety of different business domains, such as IP multimedia subsystem (IP multimedia subsystem, IMS), Internet, Internet protocol television (internet protocol television, IPTV), other fortune Quotient's business domains etc. are sought, are mainly used for providing a variety of data service services for terminal device, wherein may include such as server (packet Include and the server of multicast service be provided), router, the network equipments such as gateway.For wishing to receive IP multicast service data packet Terminal needs to request to be added/exit the corresponding multicast ip address of certain multicast service by igmpinternet, to start reception/knot Shu Suoshu multicast service, the igmpinternet of IP multicast have Group Management Protocol (internet group in IPv4 Management protocol, IGMP) agreement, it is corresponding to there is multicast listener to find agreement (multicast in ipv 6 Listener discovery protocol, MLD) agreement.It should be noted that Fig. 1 is merely illustrative architecture diagram, except in Fig. 1 Except shown functional unit, which can also include other function unit or functional network element, and the embodiment of the present application is to this Without limiting.

When the communication network shown in Fig. 1 is 5G network, above-mentioned terminal device (being referred to as terminal installation) can be to use Family equipment (user equipment, UE), such as: mobile phone, computer can also be cellular phone, wireless phone, Session initiation Protocol (session initiation protocol, SIP) phone, smart phone, wireless local loop (wireless local Loop, WLL) it stands, personal digital assistant (personal digital assistant, PDA), computer, laptop computer, hand Hold formula communication equipment, Handheld computing device, satellite radio, wireless modem card, TV set-top box (set top Box, STB), customer premises equipment, CPE (customer premise equipment, CPE) and/or in wireless system it is enterprising Other equipment of row communication.Above-mentioned access network equipment can be access net (access network, AN)/wireless access network (radio access network, RAN) equipment, the network being made of multiple 5G-AN/5G-RAN nodes, the 5G-AN/5G- RAN node can be with are as follows: access node (access point, AP), next-generation base station (NR nodeB, gNB), center cell The gNB of (central unit, CU) and distributed unit (distributed unit, DU) separation configuration, transmitting-receiving point (transmission receive point, TRP), transfer point (transmission point, TP) or some other access Node.Above-mentioned management equipment may include: access and mobile management function to ps domain (access&mobility function, AMF), Conversation management functional (session management function, SMF), policy control functions (policy control Function, PCF), application function (Application function, AF) etc..Gateway may include user plane functions (user plane funtion, UPF), bifurcation (Branching Point, BP), uplink classifier (Uplink Classifier, UL CL) etc. functional units, these functional units can work independently, can also combine realize it is certain Control function, such as: AMF, SMF and PCF can be combined together as management equipment, and the access for completing terminal device is reflected Foundation, the release of accesses control and the mobile management function to ps domain such as power, safety encryption, location registration and user face transmission path It is relevant with the conversation management functionals such as change, and the relevant data (such as congestion) of some slices (slice) of analysis, terminal device The function of data, UPF mainly complete the functions such as the routing forwarding of user face data as gateway, such as: being responsible for setting terminal Standby data message filtering, rate control, generates charge information etc. at data transmission/forwarding.

In the 5G network shown in Fig. 1, next generation network (next can be passed through between each functional unit Generation, NG) interface establishes connection and realizes communication, such as: terminal device by new wireless (new radio, NR) interface with The foundation of RAN equipment eats dishes without rice or wine to connect, and is used for transmission user face data and control plane signaling；Terminal device can pass through (the letter of NG interface 1 Claim N1) control plane signaling connection is established with AMF；AN/RAN equipment such as Next-Generation enters base station (NR NodeB, gNB), User face data can be established with UPF by NG interface 3 (abbreviation N3) to connect；AN/RAN equipment can be by NG interface 2 (referred to as N2) control plane signaling connection is established with AMF；UPF can establish control plane signaling connection by NG interface 4 (abbreviation N4) and SMF； UPF can pass through NG interface 6 (abbreviation N6) and data network interactive user face data；AMF can be by NG interface 11 (referred to as N11) control plane signaling connection is established with SMF；SMF can establish control plane signaling by NG interface 7 (abbreviation N7) and PCF and connect It connects.It should be noted that part shown in FIG. 1 is merely illustrative architecture diagram, except functional unit shown in part shown in FIG. 1 it Outside, which can also include other function unit or functional network element, and the embodiment of the present application is to this without limiting.

When the communication network shown in Fig. 1 is 4G network, terminal device can refer to the associated description of terminal device in Fig. 1, This is repeated no more；Access network equipment can for base station (nodeB, NB), evolved base station (evolution nodeB, eNB), TRP, TP, AP or some other access unit；Equipment of the core network may include: mobile management net element (mobility Management entity, MME), strategy with charging rule functions (policy and charging rules function, PCRF) management equipments and the gateway (serving gateway, SGW), grouped data network gateway (packet such as Data network gateway, PGW), the gateways such as local gateway (local gateway, LGW).

It should be understood that the interface name between network element in the application is merely exemplary, the interface between network element can be with It is other titles, the application not limits the title of interface.

The technical solution of the embodiment of the present application can be applied to various communication systems, such as: global system for mobile telecommunications (Global System of Mobile communication, GSM) system, CDMA (Code Division Multiple Access, CDMA) system, wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system System, General Packet Radio Service (General Packet Radio Service, GPRS), long term evolution (Long Term Evolution, LTE) system, LTE frequency division duplex (Frequency Division Duplex, FDD) system, LTE time division duplex (Time Division Duplex, TDD), Universal Mobile Communication System (Universal Mobile Telecommunication System, UMTS), global interconnection inserting of microwave (Worldwide Interoperability For Microwave Access, WiMAX) communication system, following the 5th generation (5th Generation, 5G) system or new nothing Line (New Radio, NR) etc..

The method of the policy control of more anchor point protocol Data Unit PDU sessions provided by the present application, can be applied to manage Equipment, gateway.The management equipment, gateway include hardware layer, operate in operating system layer on hardware layer, with And operate in application layer on operating system layer.The hardware layer includes central processing unit (central processing Unit, CPU), the hardware such as memory management unit (memory management unit, MMU) and memory (also referred to as main memory).Institute Stating operating system can be any one or more computer operating system that business processing is realized by process (Process), For example, (SuSE) Linux OS, Unix operating system, Android operation system, iOS operating system or windows operating system Deng.The application layer includes the application such as browser, address list, word processor, instant communication software.

In addition, the various aspects or feature of the application may be implemented into method, apparatus or use standard program and/or engineering The product of technology.Term " product " used herein is covered can be from any computer-readable device, carrier or medium access Computer program.For example, computer-readable medium may include, but be not limited to: magnetic memory device (for example, hard disk, floppy disk or Tape etc.), CD (for example, compact disk (compact disc, CD), digital versatile disc (digital versatile disc, DVD) etc.), smart card and flush memory device are (for example, Erarable Programmable Read only Memory (erasable programmable Read-only memory, EPROM), card, stick or Keyed actuator etc.).In addition, various storage media described herein can generation Table be used for store information one or more equipment and/or other machine readable medias.Term " machine readable media " may include But it is not limited to, the various media that can be stored, include and/or carry instruction and/or data.

The process that a PDU session increases PSA in the prior art is briefly described below.

PDU session for IPv6 type can support more PSA scenes by the way of mostly ownership (Multi-Homing) (the IPv6PDU session with multiple PSA is known as the PDU session of Multi-Homing).UPF can be a kind of realization side of PSA Formula is hereafter illustrated UPF is used as the example of PSA, it should be appreciated that other implementations of PSA can be used for this Shen In the various methods that please be provide.For a Multi-Homing PDU session, SMF can distribute multiple IPv6prefix for UE Then (such as 2), UE construct the address IPV6 according to IPV6 prefix, two IPV6 address ips V61 and IPV61 respectively correspond UPF1 And UPF2.As shown in Figure 1, BP is as bifurcation, by the data of N3 interface according to the source address of data packet (IPV61 and IPV61), UPF1 or UPF2 (anchor point that UPF1 and UPF2 are PDU session) is delivered a packet to.It will be from UPF1's and UPF2 AN is sent to by N3 interface after data convergence.Fig. 2 is to increase a PSA newly by way of being inserted into BP (by taking UPF is PSA as an example To illustrate) schematic flow chart.Including step 201 to step 209.

As shown in Fig. 2, in step 201, UE access network establishes PDU session, SMF selects UPF1 as anchor point, and is UE distribution corresponds to the IPv6Prefix1 of UPF1, and IPv6Prefix1 is notified PCF.PCF is that UE formulates default PCC rule And/or other strategies relevant to PDU session, and default PCC rule and/or other strategies relevant to PDU session are mentioned Supply SMF.SMF is according to default PCC rule and/or other policy development packet detected rule (Packets relevant to PDU session Detection Rule, PDR), service quality executing rule (Quality of Service Enforcement Rule, QER), dosage report regular (Usage Report Rule, URR), forwarding executing rule (Forwarding Action Rule, FAR), the rule for executing on UPF such as executing rule (Buffer Action Rule, BAR) is cached.Etc. rules, and will This these rule is supplied to UPF1 execution.Wherein, default PCC rule refers to the rule unrelated with specific business information or type Then, it is that the PCC that PCF is formulated according to user's signing, carrier policy is regular, is referred to as the unrelated PCC rule of business information. Other strategies relevant to PDU session include dosage monitoring strategies (monitor key, dosage threshold value), session Aggregate Maximum Bit Rate (Aggregated Maximum Bit Rate, Session-AMBR) etc..

In step 202, SMF receives triggering, needs to increase a PSA newly.SMF is newly-increased using Multi-Homing mode One PSA.SMF carries out the selection of BP, UPF2, and determines IPv6Prefix2 corresponding to UE distribution UPF2.What SMF was received Triggering may include request from application layer, UE mobility or load sharing the considerations of etc..

In step 203, SMF is downlink tunnel information of the UPF2 foundation to BP.

In step 204, SMF is that BP establishes the uplink tunnel for arriving UPF1 and UPF2 respectively, and the downlink tunnel to RAN Road.SMF provides the routing rule of uplink to BP.After BP obtains the routing rule of the uplink, user equipment can be sent Upstream data packet in source address and the matched data packet of IPv6Prefix1 be sent to UPF1, by the source of upstream data packet Location and the matched data packet of IPv6Prefix2 are sent to UPF2.

In step 205, SMF is downlink tunnel of the UPF1 foundation to BP.

In step 206, SMF is uplink tunnel of the RAN foundation to BP.

In step 207, SMF notifies the newly assigned IPv6Prefix2 of UE, while UE being notified to use IPv6Prefix2's Routing rule.Routing rule generally includes to communicate corresponding IP address.It include the corresponding address IPv6Prefix2 UPF2.

In a step 208, SMF reconfigures IPv6Prefix1, notice UE using IPv6Prefix1 routing rule and Validity period etc..Routing rule generally includes to communicate corresponding IP address.

In step 209, SMF carries out event report to PCF.It include that IP address converts (IP Address in event report Change) information carries newly-increased IPv6Prefix 2 in event reporting message, is also possible to carry data network access in message Identify 2 (data network access identifier2, DNAI2), the corresponding DNAI2 of newly-increased UPF2.

PDU session for IPv4 type, EtherType can support more PSA scenes by the way of being inserted into UL CL. PDU session for IPv6 type can also support more PSA scenes by the way of UL CL.For this non-Multi- More PSA PDU sessions of Homing, a PDU session, SMF can distribute an IP address, corresponding one of UPF only for UE (for example, corresponding UPF1, that is, when establishing PDU session, SMF is PDU session selection UPF1, and from the address pool of the UPF1 One available address IPv4 of selection or IPv6 address prefix distribute to UE).If subsequent SMF is that PDU session is inserted into one ULCL, and a newly-increased UPF (for example, UPF2) is used as PSA, then UL CL will come from N3 according to the partial flow filter of installation The data of interface are sent to UPF1 or UPF2.But since the source address of the data packet of the ULCL user equipment transmission received is The address of UPF1, so, the data (address that source address is UPF1) that UL CL is sent to UPF2 usually require to pass through specific road Data network just be can enter by mode (for example, by network address translation (Network Address Translation, NAT) Or the form in tunnel).Fig. 3 be increased newly in the way of being inserted into UL CL in the prior art PSA (come so that UPF is PSA as an example into Row exemplary illustration) schematic flow chart.Including step 301 to step 306.

In step 301, UE access network establishes PDU session, and SMF selects UPF1 as anchor point, for IPv4 type PDU Session, SMF are that UE distribution corresponds to the IPv4address1 of UPF1, and IPv4address1 is notified PCF.For IPv6 type PDU session, SMF are that UE distributes the corresponding IPv6perfix1 of UPF1, and notifies PCF.PCF be UE formulate default PCC rule and/ Or other strategies relevant to PDU session, and default PCC rule and/or other strategies relevant to PDU session are supplied to SMF.SMF according to default PCC rule and/or other policy development PDRs relevant to PDU session, and with the associated QER of PDR, The rules such as FAR, URR and/or BAR, and these rules are supplied to UPF1 and are executed.Wherein, default PCC rule refers to specifically answering PCC rule unrelated with session, that PCF contracts according to user, carrier policy is formulated, it is unrelated to be referred to as utility cession PCC rule.Other strategies relevant to PDU session include charging policy, default charging policy, event trigger strategy, major feedback There is report area (Presnece Reporting Area, PRA) mark and PRA element list plan in restriction strategy between temporary Slightly, the default quality of service parameter strategy that Internet protocol IP index is tactful, authorization session polymerize maximum rate strategy, authorization Deng.

In step 302, SMF receives triggering, needs to increase a PSA newly.SMF is using insertion UL CL mode newly-increased one A PSA.The selection of SMF progress UL CL, UPF2.The triggering that SMF is received may include the shifting of request from application layer, UE The considerations of dynamic property or load sharing etc..

In step 303, SMF is downlink tunnel information of the UPF2 foundation to UL CL.

In step 304, SMF is that UL CL establishes the uplink tunnel for arriving UPF1 and UPF2 respectively, and the downlink to RAN Tunnel.SMF provides the routing rule of uplink to UL CL.After UL CL obtains the routing rule of the uplink, can according to Upstream data is sent to UPF1 or UPF2 by the IP address for the destination in upstream data packet that family equipment is sent.

In step 305, SMF is downlink tunnel of the UPF1 foundation to UL CL.

Within step 306, SMF is uplink tunnel of the RAN foundation to UL CL.

As described above, after establishing the PDU session of more PSA, for example, UE can carry out business access by UPF1 or UPF2. PCF is that UE formulates PCC rule, and the PCC rule made is sent to SMF, and the corresponding PCC rule of different UPF may not Together.In addition, operator configures the network strategy on PCF, it is also possible to may require that net when accessing data network by different UPF Network strategy be it is different, therefore, for different UPF, PCF formulate network strategy (other plans relevant to PDU session It slightly) may be also not identical.After SMF receives PCC rule and other strategies relevant to PDU session from PCF, SMF needs root According to PCC rule and/or other policy development PDR, QER, URR, FAR, BARs relevant to PDU session etc. for being executed on UPF Rule.But at present SMF can not judge formulate these rule needs executed on which UPF, can not naturally also know by Which UPF the PDR of formulation, QER, URR, the rules such as FAR, BAR are sent to.Therefore, SMF can be issued to each UPF and be made Rule, lead to that useless or wrong rule is installed on certain UPF, cause rule execute mistake, seriously affecting user just Normal open letter, causes the waste of the communication resource, user experience is poor.

Based on the above issues, this application provides a kind of method of the policy control of more anchor point PDU sessions, can make When establishing the PDU session of more PSA or after establishing the PDU session of more PSA, SMF can determine which PSA is the rule of formulation need at Upper execution, and corresponding rule is handed down to corresponding PSA and goes to execute.Solving SMF can not judge that the rule formulated needs The problem of being executed on which UPF.To which SMF will not issue the rule made to each UPF, avoids and pacify on certain UPF Fill useless or wrong rule.Improve the normal communication quality and user experience of user.Save the communication resource.

The method that the policy control of more anchor point PDU sessions provided by the present application is described in detail below with reference to Fig. 4, Fig. 4 are these Apply for the schematic flow chart of the method 400 of the policy control of more anchor point PDU sessions of one embodiment, this method 400 can be with Using in scene shown in Fig. 1, naturally it is also possible to apply in other communication scenes, the embodiment of the present application does not limit herein System.

As shown in figure 4, this method 400 includes:

S410, policy control functions PCF network element generate the first policy information and instruction information, which is used to indicate Execute the anchor point PSA of the PDU session of the corresponding strategy of first policy information.

S420, the PCF network element send first policy information and instruction information to conversation management functional SMF network element.Accordingly , SMF network element receives first policy information and instruction information.

Optionally, this method 400 further include: S430, the SMF network element determine the second strategy according to first policy information Information.

S440, the SMF network element send second policy information according to the instruction information, to the PSA, second policy information It is used to indicate the PSA and executes the strategy.

The method of the policy control of more anchor point PDU sessions provided by the embodiments of the present application, in PDU session, there are more anchor points In the case of, when PCF network element (being referred to as " PCF ") issues the first policy information to SMF network element (being referred to as " SMF "), Carry the instruction information of the PSA of the instruction execution first policy information corresponding tactful (rule).In this way, SMF can know Road needs to execute on which PSA according to the rule that first policy information is formulated.SMF is formulated according to first policy information Second policy information.Second policy information includes tactful (rule) corresponding with first policy information.And it will make Second policy information is sent to corresponding PSA.PSA receives the second policy information, just executes the corresponding plan of the second policy information Slightly (rule).Solve the problems, such as that SMF can not judge that the strategy (rule) formulated needs execute on which PSA.Avoid certain Useless or wrong rule is installed on a little PSA.Ensure that user normally can correctly communicate, improves the communication matter of user Amount and user experience.Save the communication resource.

Specifically, PCF, which can generate the first policy information and be used to indicate, executes first policy information pair in S410 The instruction information of the anchor point PSA of the PDU session for the strategy answered.The PSA can be UPF or other gateways.For one For user equipment, when user is when establishing PDU session.Due to needing the PAS by selecting to establish PDU meeting as anchor point Application on words access server.Therefore, PCF needs to formulate the first policy information relevant to the PSA for the user equipment.When When user equipment establishes the PDU session of more PSA, the corresponding strategy of different PSA may be different.Therefore, the strategy that SMF is formulated It may not be identical.The strategy (rule) that i.e. different PSA is executed is different.Therefore, PCF is used to indicate execution to SMF transmission The instruction information of the anchor point PSA of the PDU session of the corresponding strategy of the policy information, i.e. instruction SMF are formulated according to the policy information Rule which PSA on execute.

In S420, which sends first policy information and instruction information to SMF.Correspondingly, SMF receive this first Policy information and instruction information.It should be understood that first policy information and instruction information can be carried on the phase that PCF is sent to SMF It closes on space interface signaling.The form of its signaling can be any possible or common form.The embodiment of the present application does not limit herein System.

It should be understood that the first policy information and instruction information can be sent in an information in embodiments herein To SMF, it can also separate and SMF is sent to different signalling formats.Moreover, the first policy information may have been sent before, Transmission instruction information is now only needed, the PSA that notice SMF executes the corresponding strategy of the first policy information changes.Alternatively, Instruction information may have been had sent before PCF, now only needed the strategy etc. for sending the first policy information come before updating, all Within the scope of application, this is not restricted for the embodiment of the present application.

Optionally, in S430, SMF determines the second policy information relevant to PSA according to first policy information.It should Second policy information includes tactful (rule) corresponding with first policy information.For example, the corresponding strategy of the first policy information It is 50M/ seconds for the PDU session polymerization maximum rate of user equipment, SMF determines the second strategy letter according to first policy information Breath, second policy information corresponding tactful (rule) are also that the PDU session polymerization maximum rate of user equipment is 50M/ seconds.It answers Understand, the first policy information and the second policy information corresponding tactful (rule) be it is identical, i.e. the essence of the two be it is identical, Only the form of expression of the second policy information or carrier are different from the first policy information.For another example in conjunction with Fig. 2 or Fig. 3 Example, PCF be UE formulate default PCC rule and/or other it is relevant to PDU session strategy (be equivalent to first strategy letter Breath), the corresponding strategy of the first policy information be the PDU session of user equipment allow using dosage be 100M.And by the default PCC rule and/or other tactful, together with the PSA for executing the corresponding strategy of the first policy information information relevant to PDU session It is supplied to SMF.SMF is associated with according to default PCC rule and/or other policy development PDR relevant to PDU session, and with PDR The rules (being equivalent to the second policy information) such as QER, FAR, URR and/or BAR, and these rules are supplied to UPF1 and are executed. The corresponding strategy such as PDR, PDR, FAR, URR be also the PDU session of user equipment allow using dosage be 100M.Both i.e. Essence is identical.When user equipment establishes the PDU session of more PSA, the corresponding strategy of different PSA may be different.Therefore, SMF executes the instruction information of the anchor point PSA of the PDU session of the corresponding strategy of the policy information according to instruction, determines according to the plan Which executed on the slightly rule of information formulation PSA.Optionally, the first policy information can also be identical with the second policy information, and SMF pairs First policy information is forwarded.

It should be understood that in method 400, step S430 is optional step, i.e. SMF is in addition to according to the first policy information, really Except fixed second policy information, SMF can also be according to other information, for example, the information that application function AF is sent, or according to this It indicates information, or can be combined with the information of itself storage, obtain the second policy information.In addition to according to the first policy information, It determines except the second policy information.SMF can obtain the second policy information by any possible other modes, for example, Second policy information may be the policy information etc. having had before SMF, and this is not restricted for the embodiment of the present application.

In S440, which sends out according to the instruction information, the PSA of the corresponding strategy of the first policy information of Xiang Zhihang Second policy information is given, which is used to indicate the PSA and executes the strategy.Second plan is received in the PSA Slightly after information, it is corresponding tactful (rule) that second policy information can be executed.

The method of the policy control of more anchor point PDU sessions provided by the embodiments of the present application, in PDU session, there are more anchor points In the case of, when PCF is to SMF network element distributing policy information, carry instruction execution policy information corresponding tactful (rule) The instruction information of PSA.Which need to execute on PSA according to the rule that the policy information is formulated in this way, SMF can know. And the rule made is sent to corresponding PSA.After PSA receives strategy, the strategy (rule) is just executed.Solves SMF It can not judge that the strategy (rule) formulated needs the problem of executing on which PSA.Avoid installed on certain UPF it is useless or The rule of mistake.The correctness and reliability for ensuring user's communication, improve the communication quality and user experience of user.Save communication Resource.

Optionally, as one embodiment, execution corresponding strategy of the first policy information indicated by the instruction information PDU session anchor point PSA, for the PDU session all PSA or part PSA.

Specifically, due to more PSA are established for user equipment PDU session the case where for, SMF according to first strategy The corresponding strategy of the second policy information that information is formulated can be adapted for all PSA of the PDU session, be equally applicable to the PDU Part PSA in session, is illustrated by taking Fig. 2 or Fig. 3 as an example.It include two UPF in the PDU session, i.e. user equipment is logical It crosses and carries out business access between UPF1 and UPF2 and server.

Assuming that SMF formulates the second policy information (rule of correspondence 1) in all of the PDU session according to the first policy information UPF is executed, it is possible to indicate that the rule 1 executes on all PSA by implicit or display indicating mode.For example, The instruction information can be the mark of all PSA, or instruction information does not have to the mark for indicating all UPF, directly indicates "ALL".It is equivalent to the indicating mode of display.The rule 1 of formulation just according to the instruction information, is issued all UPF and held by SMF Row.It should be understood that the display indicating mode can also be including other modes etc..This is not restricted for the embodiment of the present application.Assuming that referring to Show that information indicates that the corresponding strategy of first policy information (rule 1) is executed in the part UPF of the PDU session, then, the instruction Information can be the mark of the UPF of the part.For example, the instruction information can be the mark etc. of UPF1 or UPF2.Then SMF is just According to the instruction information, the rule 1 of formulation is issued into UPF1 or executes UPF execution.In this way, SMF can be according to actual access Business or process UPF difference, the different corresponding rules of UPF is sent to different UPF.Avoid certain UPF The problem of communication mistake caused by the useless or wrong rule of upper installation.Improve communication efficiency.

It should be understood that PCF can not when the corresponding strategy of first policy information is when all PSA of the PDU session are executed Instruction information is sent to SMF, i.e. PCF can not send instruction information itself to SMF can regard a kind of instruction information as.This finger The mode of showing is equivalent to implicit indicating mode.The corresponding strategy of the first policy information is used to indicate in all PSA of the PDU session It executes.This is not restricted for the embodiment of the present application.

Optionally, as one embodiment, which includes at least one of following information: the of terminal installation The second address information, the mark of the PSA of one address information, the first address information of terminal installation after network address translation Information, wherein the first address information of the terminal installation is that the SMF network element is the corresponding with the PSA of terminal installation distribution Address information.

Specifically, the instruction information may include the identification information of PSA, the identification information of PSA should for unique identification PSA.The instruction information can also include first address information of terminal installation (being referred to as " user equipment "), user equipment The first address information be the SMF be the user equipment distribution address information corresponding with the PSA.For example, SMF selects UPF1 As anchor point, SMF is the IPv6Prefix1 that UE distribution corresponds to UPF1, and then UE is according to the IPV6 prefix of UPF1 (IPv6Prefix1) address IPV6 is constructed, the corresponding address IPv6 the UPF1 or IPv6 address prefix are the first ground of the UE Location.PDU session for more PSA of Multi-homing, if the PDU session of UE includes multiple UPF, and SMF is UE distribution The corresponding IPv6 prefix of each UPF (i.e. Multi-homing scene), UE be with can constructing IPv6 corresponding with each UPF Location.

PDU session for more PSA of non-Multi-homing, a PDU session, SMF only can distribute one for UE The address IPv4 or IPv6 address prefix, as the first address of user equipment, corresponding one of UPF.For example, corresponding UPF1.If subsequent SMF is newly inserted into a UPF2 for PDU session, but due to the number of the UPF2 user equipment transmission received Source address according to packet is address corresponding with UPF1, so, user equipment is sent to the data of UPF2, and (source address is and UPF1 pairs The address answered) usually require by specific routing mode (network address translation) just can enter data network (for example, by The form of NAT or tunnel).Need will and the corresponding address conversion of UPF1 be address corresponding with UPF2.Second address letter Breath (for example, and UPF2 corresponding address) is the first address (for example, address corresponding with UPF1) by network address translation Address afterwards.

SMF can according to the identification information of the UPF, either according to the first address information or or the second address information pair The information of the PSA answered determines the PSA for executing the corresponding strategy of the first policy information, the second policy information that then will be made It is sent to corresponding PSA.Using above-mentioned instruction information, SMF can be made quickly and accurately to determine that the rule formulated is corresponding PSA.The efficiency that SMF determines PSA is improved, the communication resource is saved, improves communication efficiency.

It should be understood that in the embodiment of the present application, which can also include other information relevant to PSA, or Other kinds of information.This is not restricted for the embodiment of the present application.

Optionally, as one embodiment, the identification information of the PSA includes: the corresponding data network access mark of the PSA At least one of the network function mark of DNAI, the PSA.

Specifically, the identification information of PSA can be the corresponding data network access mark DNAI of PSA, DNAI is used to only The user face of one mark data network is accessed, and a DNAI can uniquely determine a PSA.The identification information of PSA can also be The network function of PSA identifies.Network function mark is also to be used to unique identification PSA.The network of the PSA of each access data network Function Identification is different from.SMF can be identified according to the corresponding DNAI of the PSA or network function, the determining and policy information Corresponding PSA.PSA is determined using the DNAI of PSA or network function mark, and can making SMF, quickly and accurately determination is held The PSA of row policing rule improves the efficiency that SMF determines PSA, easy to accomplish, saves the communication resource.

It should be understood that in the embodiment of the present application, the identification information of the PSA can also be other mark letters relevant to PSA Breath, this is not restricted for the embodiment of the present application.

Optionally, as one embodiment, first policy information include: strategy and charging control PCC rule and/or with The relevant strategy of PDU session.

Specifically, UE access network establishes PDU session, SMF selects UPF as anchor point, and SMF can will be relevant to UPF Information is notified to PCF.PCF formulates that PCC relevant to UPF is regular for UE according to the information from application layer, and will make PCC rule is sent to SMF.The corresponding PCC rule of different UPF may be different.In addition, operator configuration on PCF with this The relevant strategy of PDU session, it is also possible to may require that when accessing data network by different UPF it is different, therefore, for not The strategy relevant to PDU session that same UPF, PCF are formulated may be also not identical.After PCF knows that SMF has newly increased UPF for UE, Or after receiving the QoS authorization requests from application function AF, it is regular and/or related to the PDU session that PCF can formulate PCC Strategy, and by PCC rule and/or it is relevant to the PDU session strategy, together with instruction UPF instruction information be sent to SMF. SMF is sent to corresponding according to PCC rule and/or relevant second policy information of policy development relevant to the PDU session UPF goes to execute.So that the second policy information that SMF is formulated has better specific aim and protection, the PDU meeting carried out with user Words are adapted.Guarantee that the strategy executed when UE accesses business by different UPF is correct, it is ensured that user uses the strategy energy Correctly carry out the use of data or application.Improve the accuracy and user experience of communication.

It should be understood that the PCC rule can be default PCC rule, default PCC rule refers to the rule unrelated with utility cession Then.PCF according to user contract, carrier policy formulate PCC rule, default PCC rule be referred to as with utility cession without The PCC rule of pass.For example, default PCC rule can be adapted for all business in a set of set meal, when user accesses in the set meal Business when, either what business can use default PCC rule.The PCC rule unrelated with utility cession is usually not It is that the QoS authorization requests triggering sent due to AF is formulated.

The PCC rule can also be regular (i.e. utility cession related with the specific business information of UE access or type Relevant rule), according to service quality (Quality of Service, QOS) authorization requests from AF, (i.e. UE is accessed PCF Business information, traffic filter information, need the information such as QOS), it is regular to formulate PCC related with the specific business that UE is accessed.

It should be understood that first policy information can also include other strategies relevant to the PDU session of UE or information.This Apply for that this is not restricted for embodiment.

Optionally, as one embodiment, strategy relevant to the PDU session includes at least one of following strategy: Charging policy, default charging policy, event trigger strategy, re-authorization time restriction strategy, PRA mark and PRA element list Strategy, Internet protocol IP index strategy, the session authorized polymerize the default quality of service parameter plan of maximum rate strategy, authorization Slightly.

Specifically, can access business by PSA after UE is by establishing PDU session or obtain data.Therefore, with this The relevant strategy of PDU session is used to refer to lead PSA, correctly can so that PSA is determined according to relevant strategy by PSA progress Words.Strategy relevant to the PDU session may include: charging policy, default charging policy, event trigger strategy, re-authorization Time restriction strategy, occur report area PRA mark and PRA element list strategy, Internet protocol IP index strategy, authorization Session polymerize maximum rate strategy, authorization default quality of service parameter strategy etc. in one or more.SMF is according to these Strategy determines the second policy information.And the second policy information is issued to corresponding PSA, the corresponding strategy of the second policy information exists It is substantially identical with these above-mentioned strategies, can be correctly worked for PSA, guarantee that UE passes through PSA access communication When there is not mistake.The strategy for ensuring that PSA is executed is accurate, it is ensured that UE can be communicated correctly by the PSA, be mentioned High communication efficiency and communication quality.

It should be understood that strategy relevant to the PDU session can also include other relevant strategies, the embodiment of the present application is herein With no restriction.

Optionally, as one embodiment, as shown in figure 5, this method 400 further include:

S409, the SMF network element send the second information to the PCF network element, which includes that the SMF is that terminal installation exists The identification information of the address information corresponding with the PSA and/or the PSA distributed in the PDU session.

In S410, PCF network element generates the first policy information and instruction information, comprising:

The PCF network element generates first policy information and instruction information according to second information.

Specifically, in S409, after UE access network establishes PDU session, SMF can be selected for terminal installation PSA as The anchor point of the PDU session, after choosing PSA, SMF can notify information relevant to PSA to PCF.Second is sent to PCF Information notifies information relevant to the PSA.For requesting strategy relevant to the PSA to PCF, this can use in order to subsequent PSA correctly carries out PDU session, guarantees the positive determination of PDU session, avoids communication mistake.Second information includes that the SMF is user The address information corresponding with the PSA of equipment distribution and/or the identification information of the PSA.For example, it is assumed that SMF is user equipment point It is UPF1 with PSA, address information corresponding with the UPF1 can be IPv6prefix1 or IPv4address1.The PSA Identification information can be the corresponding DNAI of the PSA, the PSA network function mark etc..PCF believes according to the corresponding address PSA The identification information of breath and/or the PSA can determine that the corresponding strategy of the first policy information needs to execute on which PSA.I.e. PCF is the address information corresponding with the PSA of PDU session distribution and/or the mark of the PSA according to the SMF that the second information includes Information determines instruction information.For example, the SMF that the second information includes is address corresponding with the PSA letter of terminal installation distribution The identification information of breath and/or the PSA are identification information corresponding with UPF1 or address information.Then SMF is corresponding according to the PSA The identification information of address information and/or the PSA can determine that the corresponding strategy of the first policy information needs to execute on UPF1.

In S410, the second information that PCF is sent according to SMF determines the first policy information and instruction information, that is, determining should PCC rule and strategy relevant to the PDU session and instruction information, it should be appreciated that PCF is according to second information, determining PCC Rule can be default PCC rule.Since current UE accesses business by UPF1 not yet, so first issuing default PCC to SMF Rule.Basic scheme can be executed when UE accesses some basic business (for example, business for including in set meal), it is ensured that communication Correct and normal progress.The information of the UPF1 of selection is reported to the PCF by SMF, PCF is determined according to the information of UPF1 PCC rule and strategy relevant to the PDU session.The PCC rule strategy relevant with the PDU session that PCF can be made to determine It is adapted with UPF1.The second policy information of formulation is finally sent to UPF1 to go to execute.PCF is directed to different PSA, can be with Determine different PCC rules and strategy relevant to the PDU session.PSA is allowed correctly to utilize phase corresponding with itself It closes strategy or rule is communicated, improve communication quality.

It should be understood that in the embodiment of the present application, second information can also include SMF be user equipment distribution with this The corresponding other information of PSA, the identification information of the PSA can also be other kinds of identification information of PSA etc..The embodiment of the present application This is not restricted.

Optionally, as one embodiment, as shown in fig. 6, this method 400 further include:

S408, application function AF network element send third information to the PCF network element, which includes that terminal installation is visited The information of the PSA passed through when asking business and the information of the business, wherein the PSA passed through when terminal installation access business It is at least one of the PSA of PDU session distribution for the SMF,

In S410, which generates the first policy information and instruction information, comprising:

The PCF network element generates first policy information and instruction information according to the third information.

Specifically, PCF has issued default PCC rule relevant to PSA to SMF during establishing PDU session Afterwards, for example, the PDU session includes two PSA, respectively UPF1 and UPF2.SMF first by the identification information of UPF1 and UPF2 or The corresponding address information of UPF1 and UPF2 is sent to PCF, and PCF is according to the identification information or UPF1 of UPF1 and UPF2 and UPF2 pairs It is regular (for example, PCC 1 and PCC of rule rule 2) to formulate relevant default PCC for the address information answered.PCF to SMF issued with The relevant default PCC rule 1 of UPF1, default PCC rule 2 relevant to UPF2.It is corresponding with base application for defaulting PCC rule PCC rule.It should be understood that PCF can also issue UPF1 and UPF2 strategy relevant to PDU to SMF, different UPF it is corresponding with The relevant strategy of PDU may also be different.The information that SMF is issued according to PCF generates the first policy information and instruction information. UE accesses some basic businesses or application by UPF1, using strategy relevant to the regular 1 and/or PDU session of PCC.

In S408, for example, when UE accesses some particular service applications by UPF1, AF which applies can be to PCF sends third information, to PCF request QOS authorization.The PSA that the third information is passed through when including user equipment access business Information and the business information.In S410, the business information that PCF includes according to third information is determining corresponding with business PCC rule.Meanwhile PCF include according to third information user equipment access business when the information of PSA passed through, determining should Indicate information.For example, PCC rule 11 is the relevant PCC rule of the business that is accessed to UE by UPF1 by the PCC rule 11, Therefore, which is not default PCC rule.SFM according to PCC rule 11 and/or strategy relevant to the PDU session, It formulates the strategy for being directed to the particular service and is handed down to UPF1.UE is by UPF1, according to the strategy for being directed to the particular service, It goes to access the business, in this way, different for the business of UE access, PCF formulates PCC rule corresponding to the business and relevant Strategy.So that UE accesses the strategy utilized when different business and is different, mode is flexible, also, accesses what business was passed through The PSA that PSA and execution are directed to the strategy of the business is identical.Improve the efficiency and accuracy when UE access different business.It mentions High communication efficiency and user experience improve efficiency when UE access different business.Improve communication efficiency and user experience.

Optionally, before AF sends third information to PCF, SMF can send the second information to PCF, determine for PCF The corresponding default PCC rule of each PSA of PDU session and strategy relevant to PDU.This is not restricted for the embodiment of the present application.

Optionally, PCF only can send third information to PCF according to AF, formulate and access with some or multiple PSA The relevant PCC rule of business and strategy relevant to PDU, and it is sent to SMF.PCC rule and strategy relevant to PDU and access The PSA of the business is corresponding.This is not restricted for the embodiment of the present application.

Optionally, when the information of the PSA passed through when terminal installation access business includes: terminal installation access business First ground of the corresponding terminal installation of PSA passed through when the identification information of the PSA passed through, terminal installation access business First address information of the corresponding terminal installation of PSA passed through when location information, terminal installation access business is by network At least one of second address information after address conversion.

Specifically, the information for the PSA that third information is passed through when including terminal installation access business and the letter of the business Breath.The information of the business may include the type of business, traffic filter information, the information such as QOS of needs.The embodiment of the present application This is not restricted.

The information that terminal installation accesses the PSA passed through when business may include: terminal installation access business Shi Suojing The first address letter of the corresponding terminal installation of PSA passed through when the identification information of the PSA crossed, terminal installation access business First address information of the corresponding terminal installation of PSA passed through when breath, terminal installation access business is by network address At least one of second address information after conversion

The identification information of PSA may include: the network function of the corresponding data network access mark DNAI of the PSA, the PSA Mark, or can also be other identification informations relevant to PSA.This is not restricted for the embodiment of the present application.

The first address information that the terminal installation accesses the corresponding terminal installation of PSA passed through when business can be SMF network element is the address information corresponding with PSA of terminal installation distribution, when terminal installation accesses business by the PSA, example Such as, SMF selects UPF1 as anchor point, corresponds to the IPv6Prefix1 of UPF1 for UE distribution, UE then according to the IPV6 of UPF1 before Sew (IPv6Prefix1) construction address IPV6, the corresponding address IPv6 the UPF1 or IPv6 prefix are the first address of the UE. When UE accesses business by UPF1, the address of UE is the corresponding IP address of UPF1.

PDU session for more PSA of non-Multi-homing type, a PDU session, SMF only can be UE distribution one A IP address corresponds to a UPF in PDU session.For example, corresponding UPF1.If subsequent SMF is that PDU session is newly inserted into one UPF2, but since the source address of the UPF2 UE received the data packet sent is address corresponding with UPF1, so, UE is sent It usually requires to the data (source address is address corresponding with UPF1) of UPF2 by specific routing mode (network address turn Change) it just can enter data network (for example, by NAT or the form in tunnel).Need be by address conversion corresponding with UPF1 Address corresponding with UPF2.When UE accesses business by UPF2, the second address information (address corresponding with UPF2) of UE is i.e. For the address of the first address (the corresponding address UPF1) after network address translation.

It should be understood that in the embodiment of the present application, the information that terminal installation accesses the PSA passed through when business can also include Other information relevant to PSA.This is not restricted for the embodiment of the present application.

It should also be understood that the second policy information or the first policy information corresponding tactful (rule) include: PDR, URR, At least one of FAR, QER, BAR.

Specifically, rule of the SMF according to the PCF PCC rule and/or policy development relevant to PDU session issued It may include: at least one of PDR, URR, FAR, QER, BAR etc., and these rules be handed down to corresponding UPF and go to execute, In this way, can go to standardize or instruct the behavior of UE using these rules when UE accesses business by UPF.Use can be improved Family equipment accesses the safety and accuracy when business.Efficiency and communication quality when raising user equipment access business, are improved User experience,

It should be understood that SMF is according to first policy information, formulating rule corresponding with first policy information can also include Other access the relevant rule of business by UPF to UE.This is not restricted for the embodiment of the present application.

It should also be understood that first, second, third, etc. is intended merely to indicate multiple objects in each embodiment of the application It is different.Such as second information and third information be intended merely to represent different information.Without should to information itself Any influence is generated, above-mentioned first, second, third, etc. should not cause any restrictions to embodiments herein.

Illustrate the policy controls of more anchor point PDU sessions provided by the embodiments of the present application below in conjunction with specific embodiments Method.

Fig. 7 is the schematic flow of the method 500 of the policy control of more anchor point PDU sessions of the application one embodiment Figure, this method 500 can be using in frameworks shown in Fig. 1.Process shown in Fig. 7 essentially describes UE and establishes PDU session, SMF is that UE distributes IPv6Prefix, and the optimization of network execution route establishes more PSA PDU sessions using Multi-homing mode After process and PDU session establishment, PCF issues PCC rule for new UPF2, and SMF is sent to UPF2's according to instruction information Main flow.

As shown in fig. 7, this method 500 includes:

S501, UE access network establish PDU session, and SMF selects UPF1 as anchor point, and are UE distribution corresponding to UPF1's IPv6Prefix1, and IPv6Prefix1 is notified into PCF.PCF is that UE formulates default PCC rule and/or other and PDU session phase The strategy of pass, and default PCC rule and/or other strategies relevant to PDU session are supplied to SMF.SMF is according to default PCC rule and/or other associated QER, FAR, URR, BAR isotactics of policy development PDR and PDR relevant to PDU session Then, and this these rule UPF1 is supplied to execute.Optionally, the corresponding DNAI1 of UPF1 can be sent to PCF by SMF.

S502, UE trigger application function AF to PCF request QoS authorization by the PDU session access application established.AF to PCF sends QoS request message, carries IPv6address1 and relevant business information in QoS request message.IPv6address1 The IP address constructed for UE according to IPv6Prefix1.Business information includes that the filter information, type of service, business of business need The QoS etc. wanted.

S503, PCF save the solicited message that AF is sended over, and return to confirmation message to AF.

The subscription data information of S504, PCF according to UE, the letter such as network strategy of information and operator's configuration that AF is sent Cease implementation strategy decision.Determine PCC rule 1 and relevant to the PDU session of UE tactful 1.PCC rule 1 be and utility cession phase The PCC rule of pass.

S505, PCF send PCC rule 1 and/or tactful 1 (the i.e. first strategy letter relevant to the PDU session of UE to SMF Breath).Due to only one UPF of PDU session at this time, PCF can not send instruction for executing the first strategy letter to SMF Cease the UPF of corresponding strategy.

S506, SMF save PCC rule 1 and/or relevant to the PDU session of UE tactful 1.And confirmation letter is returned to PCF Breath.

S507, SMF formulate PDR1 and associated according to PCC rule 1 and/or relevant to the PDU session of UE tactful 1 The rules such as QER1, FAR1, URR1, BAR1.

S508, SMF provide the rules such as PDR1 and associated QER1, FAR1, URR1, BAR1 to UPF1.So that UPF1 is held Line discipline.

S509, AF optimize to PCF request path, carry path optimization's information, and path optimization's information carries The information such as list, the route documents mark of IPv6Prefix1, UE currently available target UPF mark.

S510, PCF save path optimization's information, return to confirmation message to AF.

S511, PCF formulate PCC rule 2 according to path optimization's information etc., and flow guiding control letter is carried in PCC rule 2 Breath, and PCC rule 2 is supplied to SMF.The list of target UPF mark is carried in flow guiding control information and according to road By the flow guiding control mark of document identification mapping.

S512, SMF return to confirmation message to PCF.

S513, SMF carry out path optimization according to PCC rule 2, according to the list of the current location of UE and target UPF, choosing Select a UPF2 and BP.And determine IPv6Prefix2 corresponding to UE distribution UPF2.

S514, SMF are downlink tunnel information of the UPF2 foundation to BP.

S515, SMF are that BP establishes the uplink tunnel for arriving UPF1 and UPF2 respectively, and the downlink tunnel to RAN.SMF to The routing rule of BP offer uplink.It, can be by the upper line number of user equipment transmission after BP obtains the routing rule of the uplink According in packet source address and the matched data packet of IPv6Prefix1 be sent to UPF1, by the source address of upstream data packet with The matched data packet of IPv6Prefix2 is sent to UPF2.

S516, SMF are downlink tunnel of the UPF1 foundation to BP.

S517, SMF are uplink tunnel of the RAN foundation to BP.

S518, SMF notify the newly assigned IPv6Prefix2 of UE, while UE being notified to advise using the routing of IPv6Prefix2 Then.Routing rule generally includes to communicate corresponding IP address.It include the corresponding address IPv6Prefix2 UPF2.

S519, SMF reconfigure IPv6Prefix1, and notice UE uses the routing rule of IPv6Prefix1.Routing rule It generally includes to communicate corresponding IP address.

S520, SMF carry out event report to PCF.It include IP address variation (IP Address Change) in event report Information, newly-increased IPv6Prefix 2 are also possible that the information and the corresponding DNAI2 of UPF2 of DNAI variation in report.If SMF does not report the corresponding DNAI of UPF1 in S501, then SMF can also report the corresponding DNAI1 of UPF1 in this step.

S521, PCF return to confirmation message to SMF.

S522, PCF carry out event report to AF, and event report includes IP Address Change, and is carried IPv6Prefix 2.It is also possible to carry DNAI Change, the corresponding DNAI2 of UPF1 corresponding DNAI1 and UPF2 in event report Etc. information.

S523, AF return to confirmation message to PCF.

S524, PCF formulate the default rule for being mounted on UPF2, i.e. PCC rule 3.And it is taken when providing PCC rule 3 to SMF Band IPv6Prefix2 or DNAI2.The corresponding strategy for being used to indicate PCC rule 3 is needed in IPv6Prefix2 or DNAI2 Corresponding UPF2 is executed.

S525, SMF return to confirmation message to PCF.

S526, SMF are according to PCC rule 3 and/or relevant to the PDU session of UE tactful 3.Formulate PDR3 and associated The information such as QER3, FAR3, URR3, BAR3.And the corresponding tactful needs of PCC rule 3 are determined according to IPv6Prefix 2 or DNAI2 It is executed in UPF2, therefore, the rules such as PDR3 and associated QER3, FAR3, URR3, BAR3 is supplied to UPF2.If PCF to SMF provides IPv6Prefix2, and SMF is determined according to the corresponding relationship and IPv6Prefix2 of the IPv6prefix and UPF of configuration The corresponding strategy of PCC rule 3 needs to execute in UPF2.If PCF provides DNAI2 to SMF, SMF is according to the NDAI and UPF of configuration Corresponding relationship and DNAI2 determine that the corresponding strategy of PCC rule 3 needs to execute in UPF2.

S527, application function AF execute redirection, so that application server UE local by UPF2 access.If application layer Message uses http protocol, then application server is sent to UE redirects instruction message, carries a new application in message The uniform resource locator (Uniform Resource Locator, URL) of server.UE carries out domain name system using new URL It unites (Domain Name System, DNS) request operation, the application server address that DNS will pass back through UPF2 and locally access. The address of the application server is matched with the destination address in the routing rule for the IPv6Prefix2 for being handed down to UE before.UE is adopted It is interacted with the IPv6Address2 constructed according to IPv6Prefix2 by UPF2 and new application server.

S528, AF send QoS request message to PCF to PCF request QoS authorization, A.QoS request message carries Ipv6address 2 and new business information include new traffic filter information, type of service, need in new business information The QoS etc. wanted.It is also possible to carry DNAI2 in request message.

S529, PCF return to confirmation message to AF.

S530, PCF formulate PCC rule 4 according to new business information.And it is carried when providing PCC rule 4 to SMF IPv6Prefix 2 or DNAI2.The corresponding strategy for being used to indicate PCC rule 4 is needed in IPv6Prefix 2 or DNAI2 pairs The UPF2 answered is executed.PCC rule 4 is rule relevant to utility cession.

S531, SMF return to confirmation message to PCF.

S532, SMF are according to PCC rule 4, and/or relevant to the PDU session of UE tactful 4, formulate PDR4 and associated QER4, FAR4, URR4, BAR4 etc..And determine that the corresponding strategy of PCC rule 4 needs according to IPv6Prefix 2 or DNAI2 UPF2 is executed, and therefore, the rules such as PDR4 and associated QER4, FAR4, URR4, BAR4 is supplied to UPF2.If PCF is to SMF IPv6Prefix2 is provided, SMF determines PCC according to the corresponding relationship and IPv6Prefix2 of the IPv6prefix and UPF of configuration The corresponding strategy of rule 4 needs to execute in UPF2.If PCF is to SMF offer DNAI2, SMF according to pair of the NDAI and UPF of configuration It should be related to and DNAI2, determine that the corresponding strategy of PCC rule 4 needs to execute in UPF2.SMF is by the PDR4 of formulation and association QER4, FAR4, URR4, BAR4 etc. be supplied to UPF2 and go to execute.

It should be understood that PCF is provided when providing PCC rule and is corresponded to plan for executing PCC rule in embodiments herein The instruction information of UPF2 slightly.For other strategies for UPF2 that PCF may be formulated, for example, charging policy, default charging Strategy, event trigger strategy, re-authorization time restriction strategy, occur report area PRA mark and PRA element list strategy, Internet protocol IP index strategy, Session-AMBR strategy, authorization default quality of service parameter strategy etc., PCF can also be with It is indicated by similar scheme.

It should also be understood that PCF can be different UPF (such as UPF of different location etc.) in embodiments herein Issue different default PCC rules.When during PDU session establishment or after establishing, PCF, can when issuing default PCC rule To issue the instruction information that the corresponding strategy of PCC rule can execute on any UPF, then SMF will be according to PCC rule The rules such as the PDR of formulation and associated QER, URR, FAR, BAR are supplied to UPF and UPF2.

It should also be understood that, if UPF2 and BP are unifications, SMF only need to select BP i.e. in embodiments herein It can.DNAI2 is exactly the corresponding DNAI of BP.The strategy that the needs that PCF is formulated execute on UPF2 will execute on BP.

The method of the policy control of more anchor point PDU sessions provided by the present application, the case where there are more anchor points for PDU session Under, when PCF is to SMF network element distributing policy information, carry the PSA's of instruction execution policy information corresponding tactful (rule) Indicate information.Which need to execute on PSA according to the rule that the policy information is formulated in this way, SMF can know.And it will system The rule set is sent to corresponding PSA.After PSA receives strategy, the strategy (rule) is just executed.Solving SMF can not sentence The disconnected strategy (rule) formulated needs the problem of executing on which PSA.Avoid installed on certain UPF it is useless or wrong Rule.Improve the communication quality and user experience of user.Save the communication resource.

Fig. 8 is the schematic flow of the method 600 of the policy control of more anchor point PDU sessions of the application another embodiment Figure, this method 600 can be using in frameworks shown in Fig. 1.Process shown in Fig. 8, which is mainly included in, establishes Multi- After more PSA PDU sessions of Homing, UE initiates new business by UPF1, and PCF carries UPF1 when providing PCC rule to SMF Instruction information (IPv6Prefix 1 or DNAI1), SMF will provide according to the instruction information according to the rule of PCC Rulemaking To the main flow of UPF1.

As shown in figure 8, this method 600 includes:

S601, UE access network establish PDU session, and SMF is that PDU session selects UPF1 as anchor point, and distributes for UE The corresponding IPv6Prefix1 of UPF1.SMF to PCF request strategy, and to PCF provide IPv6Prefix1, DNAI1, etc. information. PCF formulate the default PCC rule 1 executed on UPF1 and other relevant to PDU session tactful 1, and be supplied to SMF, SMF divides Above- mentioned information are not provided to UE, UPF1, RAN etc..SMF is according to default PCC rule 1 and/or other strategies relevant to PDU session 1, the rules such as PDR1 and PDR1 associated QER1, FAR1, URR1, BAR1 are formulated, and this these rule is supplied to UPF1 and is held Row.SMF determines that a newly-increased PSA, SMF are that PDU session selects a new anchor point UPF2, and is inserted into BP, establishes corresponding use Family face tunnel.SMF is that UE distributes the corresponding IPv6Prefix2 of UPF2.SMF to PCF request strategy, provide IPv6Prefix2, The information such as DNAI2.PCF formulates the PCC rule 2 relevant with other PDU sessions tactful 2 executed in UPF2, and is supplied to SMF, SMF provides above- mentioned information to UE, UPF2, RAN etc. respectively.SMF is according to default PCC rule 2 and/or other are related to PDU session Strategy 2 formulate the rules such as PDR2 and PDR2 associated QER2, FAR2, URR2, BAR2, and this these rule is supplied to UPF2 is executed.

The IP address that S602, UE are constructed with IPv6Prefix1 is interacted with new business.AF is awarded to PCF request QoS Power.Ipv6address 2 and new business information are carried in QoS request message, include new business mistake in new business information Filter information, type of service, QoS of needs etc..It is also possible to carry DNAI2 in QoS authorization request message.

S603, PCF return to confirmation message to AF.

S604, PCF formulate PCC rule according to new business information.The PCC rule is rule relevant to utility cession.

S605, PCF provide PCC rule to SMF, and carry IPv6Prefix 1 or DNAI1.It is used to indicate PCC rule 1 Corresponding strategy needs to execute in the corresponding UPF1 of IPv6Prefix 1 or DNAI1.

S606, SMF return to confirmation message to PCF.

S607, SMF are according to PCC rule, and/or strategy relevant to the PDU session of UE, formulate PDR and associated The rules such as QER, FAR, URR, BAR.And determine that the corresponding strategy of PCC rule needs according to IPv6Prefix 1 or DNAI1 UPF1 is executed, and therefore, the rules such as PDR and associated QER, FAR, URR, BAR is supplied to UPF1.If PCF is provided to SMF IPv6Prefix1.SMF determines PCC rule according to the corresponding relationship and IPv6Prefix1 of the IPv6prefix and UPF of configuration Corresponding strategy needs to execute in UPF1.If PCF is to SMF offer DNAI1, SMF according to the corresponding relationship of the NDAI and UPF of configuration And DNAI1, determine that the corresponding strategy of PCC rule needs to execute in UPF1.SMF by the PDR4 of formulation and associated QER, FAR, URR, BAR etc. are supplied to UPF1 and go to execute.

The rules such as PDR are supplied to UPF1 according to IPv6Prefix1 or DNAI1 by S608, SMF.UPF1 installs the rules such as PDR Backward SFM returns to confirmation message.

It should be understood that in embodiments herein, if UE is new using the IPv6Address2 access of IPv6Prefix2 construction Application, interacted with new business.The parameter then carried in above steps is IPv6prefix2 or DNAI2.It is other Step is similar.

The method of the policy control of more anchor point PDU sessions provided by the present application, PCF system different for the business of UE access Fixed PCC rule corresponding to the business and relevant policy information.When PCF is to SMF network element distributing policy information, instruction is carried The instruction information of the PSA of execution policy information corresponding tactful (rule).In this way, SMF can know according to the strategy The rule that information is formulated needs to execute on which PSA.And the rule made is sent to corresponding PSA.So that UE is accessed The strategy utilized when different business is different, and mode is flexible.Also, the PSA and execution that the business of access is passed through are directed to should The PSA of the strategy of business is identical.Improve the efficiency and accuracy when UE access different business.Communication efficiency is improved, is avoided Useless or wrong rule is installed on certain PSA.Improve the normal communication quality and user experience of user.Save communication money Source.

Fig. 9 is the schematic flow of the method 700 of the policy control of more anchor point PDU sessions of the application another embodiment Figure, this method 700 can be using in frameworks shown in Fig. 1.The process of Fig. 9 essentially describes after UE establishes PDU session, network The address IPv4 is distributed for UE.The optimization of network execution route is established in more PSA PDU conversation procedures, PCF is directed to after being inserted into UL CL New UPF2 issues PCC rule.SMF is sent to the main flow of UPF2 according to instruction information.

As shown in figure 9, this method 700 includes:

S701, UE access network establish PDU session, and SMF selects UPF1 as anchor point and for UE distribution corresponding to UPF1's IPv4address1, and IPv4address1 is notified into PCF.PCF is that UE formulates default PCC rule and/or other and PDU session Relevant strategy, and default PCC rule and/or other strategies relevant to PDU session are supplied to SMF.SMF is according to default PCC rule and/or other policy development PDRs relevant to PDU session, and with PDR associated QER, FAR, URR and/or BAR Etc. rules, and by these rules be supplied to UPF1 execute.Optionally, the corresponding DNAI1 of UPF1 can be sent to PCF by SMF.

S702, UE pass through the application of PDU session access using IPv4address1.It triggers application function AF and requests QoS to PCF Authorization.AF sends QoS request message to PCF, carries IPv4address1 and relevant business information in QoS request message.Industry Business information includes the QoS etc. that the filter information, type of service, business of business need.

S703, PCF save the solicited message that AF is sended over, and return to confirmation message to AF.

The subscription data information of S704, PCF according to UE, the letter such as network strategy of information and operator's configuration that AF is sent Cease implementation strategy decision.Determine PCC rule 1 and strategy relevant to the PDU session of UE.PCC rule 1 is related to utility cession PCC rule.

S705, PCF send PCC rule 1 and/or relevant to the PDU session of UE tactful 1 to SMF, due to PDU meeting at this time Only one UPF is talked about, therefore, PCF can not send instruction for executing the UPF of the corresponding strategy of the first policy information to SMF.

S706, SMF save PCC rule 1 and/or relevant to the PDU session of UE tactful 1.And confirmation letter is returned to PCF Breath.

S707, SMF formulate PDR1 and associated according to PCC rule 1 and/or relevant to the PDU session of UE tactful 1 The rules such as QER1, FAR1, URR1, BAR1.

S708, SMF provide the rules such as PDR1 and associated QER1, FAR1, URR1, BAR1 to UPF1.So that UPF1 is held Line discipline.

S709, AF optimize to PCF request path, carry path optimization's information, and path optimization's information carries The information such as list, the route documents mark of IPv4address1, UE currently available target UPF mark.

S710, PCF save path optimization's information, return to confirmation message to AF.

S711, PCF formulate PCC rule 2 according to path optimization's information etc., and flow guiding control letter is carried in PCC rule 2 Breath, and PCC rule 2 is supplied to SMF.The list of target UPF mark is carried in flow guiding control information and according to road By the flow guiding control mark of document identification mapping.

S712, SMF elder generation PCF return to confirmation message.

S713, SMF carry out path optimization according to PCC rule 2, according to the list of the current location of UE and target UPF, choosing Select a UPF2 and UL CL.

S714, SMF are downlink tunnel information of the UPF2 foundation to UL CL.

S715, SMF are that UL CL establishes the uplink tunnel for arriving UPF1 and UPF2 respectively, and the downlink tunnel to RAN.SMF The routing rule of uplink is provided to UL CL.After UL CL obtains the routing rule of the uplink, it can be sent out according to user equipment Upstream data is sent to UPF1 or UPF2 by the IP address for the destination in upstream data packet sent.

S716, SMF are downlink tunnel of the UPF1 foundation to UL CL.

S717, SMF are uplink tunnel of the RAN foundation to UL CL.

S718, SMF carry out event report to PCF.It include IP address transformation (IP Address Change) in event report Notification information and the corresponding DNAI2 of UPF2.If SMF does not report the corresponding DNAI of UPF1 in S701, then in this step Middle SMF also reports the corresponding DNAI1 of UPF1.

S719, PCF return to confirmation message to SMF.

S720, PCF carry out event report, the information of event reporter dna I variation and the corresponding DNAI2 of UPF2 etc. to AF Information.

S721, AF return to confirmation message to PCF.

S722, PCF formulate the default rule for being mounted on UPF2, i.e. PCC rule 3.And it is taken when providing PCC rule 3 to SMF Band DNAI2.The corresponding strategy for being used to indicate PCC rule 3 needs to execute in UPF2.

S723, SMF return to confirmation message to PCF.

S724, SMF are according to PCC rule 3 and/or relevant to the PDU session of UE tactful 3.Formulate PDR3 and associated The information such as QER3, FAR3, URR3, BAR3.And determine that the corresponding strategy of PCC rule 3 needs to execute in UPF2 according to DNAI2, because The rules such as this PDR3 and associated QER3, FAR3, URR3, BAR3 will be supplied to UPF2.SMF is according to the NDAI and UPF of configuration Corresponding relationship and DNAI2, determine PCC rule 3 it is corresponding strategy need UPF2 execute.

S725, application function AF execute redirection, so that application server UE local by UPF2 access.If application layer Message uses http protocol, then application server is sent to UE redirects instruction message, carries a new application in message The uniform resource locator (Uniform Resource Locator, URL) of server.UE carries out domain name system using new URL It unites (Domain Name System, DNS) request operation, the application server address that DNS will pass back through UPF2 and locally access. The address of the application server is matched with the destination address of the upstream data in the routing rule for the UPF2 for being handed down to ULCL before. UE is interacted using IPv4address1 by UPF2 and new application server.

S726, UE are interacted with IPv4address1 with new application, which is sent to UPF2 through UL CL.If handing over Mutual message is converted into 2 sending application of IPv4address after NAT, while carrying IPv4address 1 in application layer signaling, then AF provides new business information to PCF, carries IPv4address 1, IPv4address 2.It is also possible to carry in message DNAI2.If interaction message is sent to using tunnel mode or other non-NAT modes and provides industry to PCF using AF, AF by UPF2 Business information request QoS authorization, carries the information such as IPv4address1, DNAI2.

S727, PCF return to confirmation message to AF.

The information that S728, PCF are provided according to AF formulates PCC rule 4.And it is carried when providing PCC rule 4 to SMF IPv4address 2 or DNAI2.The corresponding strategy for being used to indicate PCC rule 4 is needed in IPv4address 2 or DNAI2 Corresponding UPF2 is executed.PCC rule 4 is rule relevant to type of service.

S729, SMF return to confirmation message to PCF.

S730, SMF are according to PCC rule 4, and/or relevant to the PDU session of UE tactful 4, formulate PDR4 and associated QER4, FAR4, URR4, BAR4 etc..And determine that the corresponding strategy of PCC rule 4 needs according to IPv4address 2 or DNAI2 UPF2 is executed, and therefore, the rules such as PDR4 and associated QER4, FAR4, URR4, BAR4 is supplied to UPF2.If PCF is to SMF IPv4address 2 is provided.SMF according to the corresponding relationship and IPv4address 2 of the IPv4address 2 and UPF of configuration, Determine that the corresponding strategy of PCC rule 4 needs to execute in UPF2.If PCF provides DNAI2 to SMF, SMF according to the NDAI of configuration and The corresponding relationship and DNAI2 of UPF determines that the corresponding strategy of PCC rule 4 needs to execute in UPF2.SMF by the PDR4 of formulation with And associated QER4, FAR4, URR4, BAR4 etc. are supplied to UPF2 and go to execute.

It should be understood that, if UPF2 and UL CL is unification, SMF need to only select UL in embodiments herein CL.DNAI2 is exactly the corresponding DNAI of UL CL.The strategy that the needs that PCF is formulated execute on UPF2 will be held on UL CL Row.

It should also be understood that PCF provides corresponding for executing PCC rule when providing PCC rule in embodiments herein The instruction information of the UPF2 of strategy.For other strategies for UPF2 that PCF may be formulated, for example, charging policy, default meter , re-authorization time restriction strategy, there is report area PRA mark and PRA element list plan at event trigger strategy in expense strategy Slightly, Internet protocol IP index strategy, Session-AMBR strategy, default quality of service parameter strategy of authorization etc., PCF can also To be indicated by similar scheme

It should also be understood that, if SMF is that UE distributes IPv6 address prefix, using the side CL UL in the example of the application Formula establishes more PSA PDU sessions, and step is similar with the step in above-mentioned method 700.IPv4 in above-described embodiment Address could alternatively be the address IPv6 or IPv6 address prefix.

The method of the policy control of more anchor point PDU sessions provided by the present application, the case where there are more anchor points for PDU session Under, when PCF is to SMF network element distributing policy information, carry the PSA's of instruction execution policy information corresponding tactful (rule) Indicate information.Which need to execute on PSA according to the rule that the policy information is formulated in this way, SMF can know.And it will system The rule set is sent to corresponding PSA.After PSA receives strategy, the strategy (rule) is just executed.Solving SMF can not sentence The disconnected strategy (rule) formulated needs the problem of executing on which PSA.Avoid installed on certain UPF it is useless or wrong Rule.Improve the normal communication quality and user experience of user.Save the communication resource.

Figure 10 is the schematic stream of the method 800 of the policy control of more anchor point PDU sessions of the application another embodiment Cheng Tu, this method 800 can be using in frameworks shown in Fig. 1.Process shown in Fig. 10, which is mainly included in, establishes Multi- After more PSA PDU sessions of Homing, UE initiates new business by UPF2, and PCF carries UPF2 when providing PCC rule to SMF Instruction information, SMF will be supplied to the process of UPF2 according to the instruction information according to the rule of PCC Rulemaking.

As shown in Figure 10, this method 800 includes:

S801, UE access network establish PDU session, and SMF selects UPF1 as anchor point, and are UE distribution corresponding to UPF1's IPv4address1, and IPv4address1 is notified into PCF.PCF is that UE formulates default PCC rule and/or other and PDU session Relevant strategy, and default PCC rule and/or other strategies relevant to PDU session are supplied to SMF.SMF respectively to UE, UPF1, RAN etc. provide above- mentioned information.SMF is according to default PCC rule and/or other policy developments relevant to PDU session PDR, and it is regular with PDR associated QER, FAR, URR and/or BAR etc., and these rules are supplied to UPF1 and are executed.SMF determines Surely a PSA is increased newly, SMF is that PDU session selects a new anchor point UPF2, and is inserted into UL CL, establishes corresponding user face tunnel Road.Optionally, SMF sends the information such as instruction and the corresponding DNAI2 of UPF2 for being inserted into UL CL to PCF.PCF is formulated in UPF2 The PCC rule 2 relevant with other PDU sessions tactful 2 of execution, and it is supplied to SMF.SMF according to default PCC rule 2 and/or its He relevant to PDU session tactful 2 formulates the rules such as PDR2 and PDR2 associated QER2, FAR2, URR2, BAR2, and by this These rules are supplied to UPF2 execution.If SMF does not send the information such as instruction of insertion UL CL to PCF, SFM is by basis It is locally configured to UPF2 and policy information is provided.

S802, UE are interacted with IPv4address1 with new application, which is sent to UPF2 through UL CL.If handing over Mutual message is converted into 2 sending application of IPv4address after NAT, while carrying IPv4address 1 in application layer signaling, then AF provides new business information request QoS authorization to PCF.IPv4address 1, IPv4address are carried in QoS request information 2.It is also possible to carry DNAI2 in QoS request message.If UPF2 is sent out interaction message using tunnel mode or other non-NAT modes It gives using AF, then AF provides business information request QoS authorization to PCF, carries the information such as IPv4address1, DNAI2.

S803, PCF return to confirmation message to AF.

S804, PCF implementation strategy decision formulate PCC rule.If having received the instruction of insertion UL CL before PCF, that PCF can further judge whether this new service request is to access to generate by new anchor point.

S805, PCF provide PCC rule to SMF, and carry IPv4address2 or DNAI2.It is used to indicate PCC rule Corresponding strategy needs to execute in the corresponding UPF2 of IPv4address2 or DNAI2.

S806, SMF return to confirmation message to PCF.

S807, SMF are according to PCC rule, and/or strategy relevant to the PDU session of UE, formulate PDR and associated The rules such as QER, FAR, URR, BAR

S808, SMF are according to pair of address field and UPF after IPv4address2 (if PCF provide if) and the NAT configured Should be related to or SMF is according to the corresponding relationship of DNAI2 and the DNAI and UPF of configuration, judge PDR and associated QER, FAR, URR, BAR etc. will be supplied to UPF2.SMF provides rule to UPF2.

It should be understood that, if SMF is that UE distributes IPv6 address prefix, using the side CL UL in the example of the application Formula, establishes more PSA PDU sessions, and step is similar with the step in above-mentioned method 800.IPv4 in above-described embodiment Address could alternatively be the address IPv6 or IPv6 address prefix.

The method of the policy control of more anchor point PDU sessions provided by the present application, PCF system different for the business of UE access Fixed PCC rule corresponding to the business and relevant policy information.When PCF is to SMF network element distributing policy information, instruction is carried The instruction information of the PSA of execution policy information corresponding tactful (rule).In this way, SMF can know according to the strategy The rule that information is formulated needs to execute on which PSA.And the rule made is sent to corresponding PSA.So that UE is accessed The strategy utilized when different business is different, and improves efficiency and accuracy when UE access different business.Improve communication Efficiency avoids and installs useless or wrong rule on certain PSA.Improve the normal communication quality and user experience of user. Save the communication resource.

It should be understood that above-mentioned be intended merely to that those skilled in the art is helped to more fully understand the embodiment of the present application, and have to limit The range of the embodiment of the present application processed.Those skilled in the art are according to given above-mentioned example, it is clear that can carry out various equivalences Modification or variation, for example, in the above method 500 to 800 certain steps can not have to, or certain steps can newly be added It is rapid etc..The either combination of above-mentioned any two kinds or any various embodiments.Scheme after such modification, variation or combination It also falls into the range of the embodiment of the present application.

It should also be understood that magnitude of the sequence numbers of the above procedures are not meant that the order of the execution order, the execution of each process Sequence should be determined by its function and internal logic, and the implementation process without coping with the embodiment of the present application constitutes any restriction.

Above in association with Fig. 1 to Figure 10, the side of the policy control of more anchor point PDU sessions of the embodiment of the present application is described in detail The communication device of the embodiment of the present application is described in detail below in conjunction with Figure 11 to Figure 14 in method.

Figure 11 is the schematic block diagram of the communication device of the application one embodiment.It should be understood that the communication device can refer to Above-mentioned conversation management functional network element, communication device 900 shown in Figure 11, which can be used for executing, corresponds to Fig. 4 into Figure 10, side Method 400 is into method 800 the step of conversation management functional SFM execution.Communication device embodiment is corresponded to each other with embodiment of the method, Similar description is referred to embodiment of the method, which includes: processor 910, memory 920 and transceiver 930, processor 910, memory 920 and transceiver 930 are used by communication connection, 920 store instruction of memory, processor 910 In the instruction for executing the storage of memory 920, transceiver 930 under the driving of processor 910 for executing specific signal transmitting and receiving.

Transceiver 930 should for receiving the first policy information and instruction information of the transmission of policy control functions PCF network element Indicate that information is used to indicate the anchor point PSA for executing the PDU session of the corresponding strategy of first policy information；

Optionally, processor 910, for determining the second policy information according to first policy information；

Transceiver 930 is also used to send second policy information to the PSA, which is used to indicate the PSA Execute the strategy.

Communication device provided by the present application, in PDU session there are in the case where more anchor points, PCF can be under communication device When sending out the first policy information, the instruction information of the PSA of the instruction execution first policy information corresponding tactful (rule) is carried. Which need to execute on PSA according to the rule that first policy information is formulated in this way, communication device can be known.Communication dress It sets according to first policy information, formulates the second policy information.Second policy information includes corresponding with first policy information Strategy (rule).And the second policy information made is sent to corresponding PSA.PSA receives the second policy information, just It is corresponding tactful (rule) to execute the second policy information.Solving communication device can not judge that the strategy (rule) formulated needs The problem of being executed on which PSA.It avoids and useless or wrong rule is installed on certain UPF.Ensure that user can normally just True communicate, and improves the communication quality and user experience of user.Save the communication resource.

Various components in communication device 900 pass through communication connection, i.e. processor 910, memory 920 and transceiver 930 Between communicated with each other by internal connecting path, transmitting control and/or data-signal.The application above method embodiment can answer For in processor, or the step of above method embodiment is realized by processor.Processor may be a kind of ic core Piece, the processing capacity with signal.During realization, each step of above method embodiment can be by hard in processor The integrated logic circuit of part or the instruction of software form are completed.Above-mentioned processor can be central processing unit (central Processing unit, CPU), the combination of network processing unit (network processor, NP) or CPU and NP, number letter Number processor (digital signal processor, DSP), specific integrated circuit (application specific Integrated circuit, ASIC), ready-made programmable gate array (field programmable gate array, FPGA) Either other programmable logic device, discrete gate or transistor logic, discrete hardware components.It may be implemented or execute Disclosed each method, step and logic diagram in the application.General processor can be microprocessor or the processor It can be any conventional processor etc..It can be embodied directly at hardware decoding in conjunction with the step of method disclosed in the present application Reason device executes completion, or in decoding processor hardware and software module combine and execute completion.Software module can be located at Random access memory, flash memory, read-only memory, programmable read only memory or electrically erasable programmable memory, register etc. In the storage medium of this field maturation.The storage medium is located at memory, and processor reads the information in memory, hard in conjunction with it Part completes the step of above method.

Optionally, in another embodiment of the application, first policy information of execution indicated by the instruction information The anchor point PSA of the PDU session of corresponding strategy, for all PSA or part PSA of the PDU session.

Optionally, in another embodiment of the application, which includes at least one of following information: eventually Second address information of the first address information, the first address information of terminal installation of end device after network address translation, The identification information of the PSA, wherein the first address information of the terminal installation be the SMF network element be the terminal installation distribution with The corresponding address information of the PSA.

Optionally, in another embodiment of the application, the identification information of the PSA includes: the corresponding data network of the PSA At least one of network access mark DNAI, network function mark of the PSA.

Optionally, in another embodiment of the application, which includes strategy and charging control PCC rule Then and/or strategy relevant to the PDU session.

It optionally, should be relevant to the PDU session tactful including in following strategy in another embodiment of the application At least one: charging policy, default charging policy, event trigger strategy, re-authorization time restriction strategy, occur report area Domain PRA mark and PRA element list strategy, the session polymerization maximum rate strategy authorized, are awarded Internet protocol IP index strategy The default quality of service parameter strategy of power.

Optionally, in another embodiment of the application, which is also used to: sending second to the PCF network element Information, second information include the SMF be the address information corresponding with the PSA distributed in the PDU session of terminal installation and/ Or the identification information of the PSA.

It should be noted that in the embodiment of the present application, processor 910 can be by storing by processing modules implement, memory 920 Module realizes that transceiver 930 can be realized that as shown in figure 12, communication device 1000 may include processing module by transceiver module 1010, memory module 1020 and transceiver module 1030.

Communication device 1000 shown in communication device 900 or Figure 12 shown in Figure 11 can be realized earlier figures 4 into Figure 10, For method 400 into method 800 the step of conversation management functional SFM execution, similar description can refer to aforementioned corresponding method In description.To avoid repeating, which is not described herein again.

Figure 13 shows the schematic block diagram of the communication device 1100 of the application one embodiment.It should be understood that communication device Embodiment is corresponded to each other with embodiment of the method, communication device 1100 shown in Figure 13, which can be used for executing, corresponds to Fig. 4 to Figure 10 In, method 400 into method 800 policy control functions PCF execute the step of.Similar description is referred to embodiment of the method, As shown in figure 13, which includes: processor 1110, memory 1120 and transceiver 1130, and processor 1110 is deposited Reservoir 1120 and transceiver 1130 are by communication connection, and 1120 store instruction of memory, processor 1110 is for executing memory The instruction of 1120 storages, transceiver 1130 under the driving of processor 1110 for executing specific signal transmitting and receiving.

The processor 1110, for generating the first policy information and the instruction information, which, which is used to indicate, is held The anchor point PSA of the PDU session of the corresponding strategy of row first policy information.

Transceiver 1130, for sending first policy information and the instruction information to conversation management functional SMF network element.

Communication device provided by the present application, in PDU session there are in the case where more anchor points, communication device is under SMF network element When sending out policy information, the instruction information of the PSA of instruction execution policy information corresponding tactful (rule) is carried.In this way, SMF It can know and need to execute on which PSA according to the rule that the policy information is formulated.And the rule made is sent to Corresponding PSA.After PSA receives strategy, the strategy (rule) is just executed.Solve the strategy (rule that SMF can not judge to formulate Which then) need the problem of being executed on PSA.It avoids and useless or wrong rule is installed on certain UPF.Improve user's Communication quality and user experience.Save the communication resource.

Various components in communication device 1100 pass through communication connection, i.e. processor 1110, memory 1120 and transceiver It is communicated with each other between 1230 by internal connecting path, transmitting control and/or data-signal.The application above method embodiment can To be applied in processor, or the step of above method embodiment is realized by processor.Processor may be a kind of integrated electricity Road chip, the processing capacity with signal.During realization, each step of above method embodiment can be by processor Hardware integrated logic circuit or software form instruction complete.Above-mentioned processor can be CPU, network processing unit NP The either combination of CPU and NP, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device Part, discrete hardware components.It may be implemented or execute disclosed each method, step and the logic diagram in the application.General place Reason device can be microprocessor or the processor is also possible to any conventional processor etc..In conjunction with the disclosure as set forth herein side The step of method, can be embodied directly in hardware decoding processor and execute completion, or with the hardware and software mould in decoding processor Block combination executes completion.Software module can be located at random access memory, flash memory, read-only memory, programmable read only memory or In the storage medium of this fields such as person's electrically erasable programmable memory, register maturation.The storage medium is located at memory, place The step of managing the information in device reading memory, completing the above method in conjunction with its hardware.

Optionally, in another embodiment of the application, which includes: strategy and charging control PCC Rule and/or strategy relevant to the PDU session.

Optionally, in another embodiment of the application, which is also used to: receiving application function AF network element The third information of transmission, the information for the PSA which is passed through when including terminal installation access business and the letter of the business Breath, wherein the PSA passed through when terminal installation access business is at least one in the PSA that the SMF is PDU session distribution It is a.Processor 1110 is specifically used for: according to the third information, generating first policy information and the instruction information.

Optionally, in another embodiment of the application, which accesses the information of the PSA passed through when business Identification information, terminal installation of the PSA passed through when including: terminal installation access business is passed through when accessing business First address information of the corresponding terminal installation of PSA, the terminal installation access the corresponding terminal of PSA passed through when business Second address information at least one of of first address information of device after network address translation.

Optionally, in another embodiment of the application, which is also used to: receiving SMF network element transmission The second information, second information include the SMF be terminal installation distribution address information corresponding with the PSA and/or the PSA Identification information, processor 1110 is specifically used for: according to second information, generating first policy information and the instruction information.

It should be noted that in the embodiment of the present application, processor 1110 can be by depositing by processing modules implement, memory 1120 It stores up module to realize, transceiver 1130 can be realized by transceiver module, and as shown in figure 14, communication device 1200 may include processing mould Block 1210, memory module 1220 and transceiver module 1230.

Communication device 1200 shown in communication device 1100 or Figure 14 shown in Figure 13 can be realized earlier figures 4 to Figure 10 In, method 400 into method 800 policy control functions PCF execute the step of, similar description can refer to aforementioned corresponding side Description in method.To avoid repeating, which is not described herein again.

The embodiment of the present application also provides a kind of device, which can execute any one above-mentioned claim to a method Described in more anchor point protocol Data Unit sessions policy control method.Device provided by the embodiments of the present application, solves When the PDU session of more PSA, SMF can not judge that the rule formulated needs the problem of executing on which PSA.Avoid certain PSA The useless or wrong rule of upper installation.Improve the normal communication quality and user experience of user.Save the communication resource.

The embodiment of the present application also provides a kind of computer-readable mediums, for storing computer program code, the calculating Machine program includes more anchor point protocol Data Unit PDU meetings for executing the embodiment of the present application into method 800 of the above method 400 The instruction of the method for the policy control of words.The readable medium can be read-only memory (read-only memory, ROM) or with Machine accesses memory (random access memory, RAM), and the embodiment of the present application is without limitation.

Present invention also provides a kind of computer program product, the computer program product includes instruction, when the finger Order is performed, so that the management equipment, gateway, access network equipment can execute the management corresponding to the above method The operation of equipment, gateway, access network equipment or terminal device.

The embodiment of the present application also provides a kind of communication system, which includes above-mentioned provided by the embodiments of the present application Communication device, the communication system can complete any more anchor point protocol Data Unit PDU sessions provided by the embodiments of the present application Policy control method.

The embodiment of the present application also provides a kind of System on Chip/SoC, which includes: processing unit and communication unit, is somebody's turn to do Processing unit, such as can be processor, which for example can be input/output interface, pin or circuit etc..At this Managing unit can be performed computer instruction, so that the chip execution in the communication device is above-mentioned provided by the embodiments of the present application any The method of the policy control of more anchor point protocol Data Unit PDU sessions.

Optionally, which is stored in storage unit.

Optionally, which is the storage unit in the chip, such as register, caching, the storage unit may be used also To be the storage unit positioned at the chip exterior in the terminal, such as ROM or the other types of static information and instruction can be stored Static storage device, RAM etc..Wherein, the processor that any of the above-described place mentions, can be a CPU, microprocessor, ASIC, Or one or more programs for controlling the method for the policy control of above-mentioned more anchor point protocol Data Unit PDU sessions execute Integrated circuit.

It should be understood that the terms "and/or" and " at least one of A or B ", only a kind of description affiliated partner Incidence relation, indicate may exist three kinds of relationships, for example, A and/or B, can indicate: individualism A exists simultaneously A and B, These three situations of individualism B.In addition, character "/" herein, typicallys represent the relationship that forward-backward correlation object is a kind of "or".

Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosure Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually It is implemented in hardware or software, the specific application and design constraint depending on technical solution.Professional technician Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed Scope of the present application.

It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description, The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.

In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, it can be with It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit It divides, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components It can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown or The mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, the indirect coupling of device or unit It closes or communicates to connect, can be electrical property, mechanical or other forms.

The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme 's.

It, can also be in addition, each functional unit in each embodiment of the application can integrate in one processing unit It is that each unit physically exists alone, can also be integrated in one unit with two or more units.

It, can be with if the function is realized in the form of SFU software functional unit and when sold or used as an independent product It is stored in a computer readable storage medium.Based on this understanding, the technical solution of the application is substantially in other words The part of the part that contributes to existing technology or the technical solution can be embodied in the form of software products, the meter Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be a People's computer, server or network equipment etc.) execute each embodiment the method for the application all or part of the steps. And storage medium above-mentioned includes: that USB flash disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), arbitrary access are deposited The various media that can store program code such as reservoir (Random Access Memory, RAM), magnetic or disk.

The above, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, it is any Those familiar with the art within the technical scope of the present application, can easily think of the change or the replacement, and should all contain Lid is within the scope of protection of this application.Therefore, the protection scope of the application should be based on the protection scope of the described claims.

Claims

1. a kind of method of the policy control of more anchor point protocol Data Unit PDU sessions characterized by comprising

Conversation management functional SMF network element receives the first policy information that policy control functions PCF network element is sent and instruction information, institute It states instruction information and is used to indicate the anchor point PSA for executing the PDU session of the corresponding strategy of first policy information；

The SMF network element sends the second policy information to the PSA, and second policy information is used to indicate the PSA and executes The strategy.

2. the method according to claim 1, wherein first strategy of execution indicated by the instruction information The anchor point PSA of the PDU session of the corresponding strategy of information is all PSA or part PSA of the PDU session.

3. method according to claim 1 or 2, which is characterized in that the instruction information include in following information at least One: second ground of the first address information, the first address information of terminal installation of terminal installation after network address translation The identification information of location information, the PSA, wherein the first address information of the terminal installation is that the SMF network element is the end The address information corresponding with the PSA of end device distribution.

4. according to the method described in claim 3, it is characterized in that, the identification information of the PSA includes: the PSA corresponding At least one of data network access mark DNAI, network function mark of the PSA.

5. method according to claim 1 to 4, which is characterized in that first policy information includes strategy With charging control PCC rule and/or strategy relevant to the PDU session.

6. according to the method described in claim 5, it is characterized in that, the strategy relevant to the PDU session includes following At least one of strategy: charging policy, event trigger strategy, re-authorization time restriction strategy, occurs default charging policy Report area PRA mark and PRA element list strategy, Internet protocol IP index strategy, the session authorized polymerize maximum rate Strategy, the default quality of service parameter strategy authorized.

7. method according to any one of claim 1 to 6, which is characterized in that the method also includes:

The SMF network element sends the second information to the PCF network element, and second information includes that the SMF is that terminal installation exists The identification information of the address information corresponding with the PSA and/or the PSA distributed in the PDU session.

8. a kind of method of the policy control of more anchor point protocol Data Unit PDU sessions characterized by comprising

Policy control functions PCF network element generates the first policy information and instruction information, and the instruction information, which is used to indicate, executes institute State the anchor point PSA of the PDU session of the corresponding strategy of the first policy information；

The PCF network element sends first policy information and the instruction information to conversation management functional SMF network element.

9. according to the method described in claim 8, it is characterized in that, first strategy of execution indicated by the instruction information The anchor point PSA of the PDU session of the corresponding strategy of information is all PSA or part PSA of the PDU session.

10. method according to claim 8 or claim 9, which is characterized in that the instruction information include in following information at least One: second ground of the first address information, the first address information of terminal installation of terminal installation after network address translation The identification information of location information, the PSA, wherein the first address information of the terminal installation is that the SMF network element is the end The address information corresponding with the PSA of end device distribution.

11. according to the method described in claim 10, it is characterized in that, the identification information of the PSA includes: the PSA corresponding Data network access mark DNAI, the PSA network function mark at least one of.

12. the method according to any one of claim 8 to 11, which is characterized in that first policy information includes:

Strategy and charging control PCC rule and/or strategy relevant to the PDU session.

13. according to the method for claim 12, which is characterized in that the strategy relevant to the PDU session include with At least one of lower strategy: charging policy, event trigger strategy, re-authorization time restriction strategy, goes out default charging policy It is maximum fast that existing report area PRA mark and PRA element list strategy, Internet protocol IP index tactful, authorization session polymerization Rate strategy, authorization default quality of service parameter strategy.

14. method according to one of claims 8 to 13, which is characterized in that the method also includes:

The PCF network element receives the second information that the SMF network element is sent, and second information includes that the SMF fills for terminal The identification information of the address information corresponding with the PSA and/or the PSA distributed in the PDU session is set,

The PCF network element generates the first policy information and instruction information, comprising:

The PCF network element generates first policy information and the instruction information according to second information.

15. the method according to any one of claim 8 to 14, which is characterized in that the method also includes:

The PCF network element receives the third information that application function AF network element is sent, and the third information includes terminal installation access The information of the information of the PSA passed through when business and the business, wherein passed through when the terminal installation access business PSA is at least one of the PSA that the SMF is the PDU session distribution,

The PCF network element generates first policy information and the instruction information according to the third information.

16. according to the method for claim 15, which is characterized in that the PSA passed through when the terminal installation access business The PSA that is passed through when including: terminal installation access business of information identification information, the terminal installation access business when First address information of the corresponding terminal installation of the PSA passed through, the terminal installation access the PSA passed through when business Second address information at least one of of first address information of the corresponding terminal installation after network address translation.

17. a kind of communication device, which is characterized in that including processor, transceiver and memory, the memory refers to for storing It enables, the processor is used to execute the instruction of the memory storage, receives or sends signal to control the transceiver；

The transceiver, for receiving the first policy information and instruction information of the transmission of policy control functions PCF network element, the finger Show that information is used to indicate the anchor point PSA for executing the PDU session of the corresponding strategy of first policy information；

The transceiver is also used to: Xiang Suoshu PSA sends the second policy information, and second policy information is used to indicate described PSA executes the strategy.

18. communication device according to claim 17, which is characterized in that execution indicated by the instruction information described The anchor point PSA of the PDU session of the corresponding strategy of one policy information is all PSA or part PSA of the PDU session.

19. communication device described in 7 or 18 according to claim 1, which is characterized in that the instruction information includes in following information At least one: the first address information of terminal installation, the first address information of terminal installation are after network address translation The identification information of second address information, the PSA, wherein the first address information of the terminal installation is that the SMF network element is The address information corresponding with the PSA of the terminal installation distribution.

20. communication device according to claim 19, which is characterized in that the identification information of the PSA includes: the PSA At least one of corresponding data network access mark DNAI, network function mark of the PSA.

21. communication device described in any one of 7 to 20 according to claim 1, which is characterized in that the first policy information packet It includes: strategy and charging control PCC rule and/or strategy relevant to the PDU session.

22. communication device according to claim 21, which is characterized in that the strategy packet relevant to the PDU session Include at least one of following strategy: charging policy, default charging policy, event trigger strategy, re-authorization time restriction plan Slightly, there is report area PRA mark and PRA element list strategy, Internet protocol IP index strategy, the session polymerization authorized most Big rate policy, authorization default quality of service parameter strategy.

23. communication device described in any one of 7 to 22 according to claim 1, which is characterized in that the transceiver is also used to:

The second information is sent to the PCF network element, second information includes that the SMF is terminal installation in the PDU session The address information corresponding with the PSA of middle distribution and/or the identification information of the PSA.

24. a kind of communication device, which is characterized in that including processor, transceiver and memory, the memory refers to for storing It enables, the processor is used to execute the instruction of the memory storage, receives or sends signal to control the transceiver；

The processor, for generating the first policy information and instruction information, the instruction information is used to indicate execution described the The anchor point PSA of the PDU session of the corresponding strategy of one policy information；

The transceiver, for sending first policy information and the instruction information to conversation management functional SMF network element.

25. communication device according to claim 24, which is characterized in that execution indicated by the instruction information described The anchor point PSA of the PDU session of the corresponding strategy of one policy information is all PSA or part PSA of the PDU session.

26. the communication device according to claim 23 or 24, which is characterized in that the instruction information includes in following information At least one: the first address information of terminal installation, the first address information of terminal installation are after network address translation The identification information of second address information, the PSA, wherein the first address information of the terminal installation is that the SMF network element is The address information corresponding with the PSA of the terminal installation distribution.

27. communication device according to claim 26, which is characterized in that the identification information of the PSA includes: the PSA At least one of corresponding data network access mark DNAI, network function mark of the PSA.

28. the communication device according to any one of claim 24 to 27, which is characterized in that the first policy information packet It includes:

29. communication device according to claim 28, which is characterized in that the strategy packet relevant to the PDU session Include at least one of following strategy: charging policy, default charging policy, event trigger strategy, re-authorization time restriction plan Slightly, there is report area PRA mark and PRA element list strategy, Internet protocol IP index strategy, the session polymerization authorized most Big rate policy, authorization default quality of service parameter strategy.

30. the communication device according to any one of claim 24 to 29, which is characterized in that the transceiver is also used to:

The second information that the SMF network element is sent is received, second information includes that the SMF is terminal installation in the PDU The identification information of the address information corresponding with the PSA and/or the PSA distributed in session,

The processor is specifically used for: according to second information, generating first policy information and the instruction information.

31. the communication device according to any one of claim 24 to 30, which is characterized in that the transceiver is also used to: The third information that application function AF network element is sent is received, the third information is passed through when including terminal installation access business The information of the information of PSA and the business, wherein it is institute that the PSA passed through when the terminal installation access business, which is the SMF, At least one of the PSA of PDU session distribution is stated,

The processor is specifically used for: according to the third information, generating first policy information and the instruction information.

32. communication device according to claim 31, which is characterized in that passed through when the terminal installation access business The identification information for the PSA that the information of PSA is passed through when including: the terminal installation access business, terminal installation access industry First address information of the corresponding terminal installation of the PSA passed through when business, the terminal installation are passed through when accessing business The corresponding terminal installation of PSA the first address information in the second address information after network address translation at least One.

33. a kind of computer readable storage medium, for storing computer program, which is characterized in that the computer program is used In execution according to claim 1 to the side of the policy control of more anchor points protocol Data Unit PDU session described in any one of 16 The instruction of method.

34. a kind of System on Chip/SoC, including processing unit and communication unit, which can be performed computer instruction, so that should System on Chip/SoC executes the strategy control to more anchor points protocol Data Unit PDU session described in any one of 16 according to claim 1 The method of system.