CN113993118B - Data distribution method, device, equipment, functional entity and storage medium - Google Patents
Data distribution method, device, equipment, functional entity and storage medium Download PDFInfo
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- CN113993118B CN113993118B CN202111204376.0A CN202111204376A CN113993118B CN 113993118 B CN113993118 B CN 113993118B CN 202111204376 A CN202111204376 A CN 202111204376A CN 113993118 B CN113993118 B CN 113993118B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W8/00—Network data management
- H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
- H04W8/08—Mobility data transfer
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Abstract
The invention provides a data distribution method, a data distribution device, data distribution equipment, a functional entity and a storage medium. The method comprises the following steps: selecting a target user plane function UPF session anchor point for the split user terminal, and determining a corresponding uplink classifier ULCL split rule; generating a distribution strategy containing a target UPF session anchor point identifier and ULCL distribution rules, and sending the distribution strategy to a policy control function PCF entity, so that the PCF entity generates a distribution instruction containing dynamic policy and charging control PCC rules according to the distribution strategy and sends the distribution instruction to a session management function SMF entity. The method of the invention selects the target UPF session anchor point for the streaming user terminal and generates the streaming strategy, thereby newly increasing the UPF session anchor point on the session path, and dispatching the user terminal to the newly increased UPF session anchor point, thereby better meeting the service requirement.
Description
Technical Field
The present invention relates to communications technologies, and in particular, to a data offloading method, apparatus, device, functional entity, and storage medium.
Background
The third generation partnership project (3rd Generation Partnership Project,3GPP) is currently under study for the fifth generation mobile communication technology (5th Generation,5G) system. The 5G architecture includes: session management functions (Session Management Function, SMF), user plane functions (User Plane Function, UPF), policy control functions (Policy Control Function, PCF), and the like.
In the current 5G network service distribution technology, UPF anchor point distribution is performed based on user subscription attributes, and when the user attributes change, such as subscription attributes change, position switching and service switching, data anchor points UPF are redistributed for the user.
When the user accesses a specific service, the user is dispatched to a special UPF anchor point of the signed DNN to carry out data distribution, and if the user does not access the specific service, the user can only dispatch to a public UPF anchor point to carry out data distribution. For some special scenarios, for example, the internet surfing behavior of some specific users needs to be monitored, the existing shunting mode uniformly schedules the specific users and other users to the dedicated UPF anchor point or the public UPF anchor point, and the internet surfing behavior of the specific users cannot be independently monitored because other UPFs cannot be scheduled.
Disclosure of Invention
The invention provides a data distribution method, a device, equipment, a functional entity and a storage medium, which are used for solving the problem that the existing distribution mode can only uniformly schedule users to a special UPF anchor point or a public UPF anchor point and cannot meet special service requirements.
In a first aspect, the present invention provides a data splitting method, including:
selecting a target user plane function UPF session anchor point for the split user terminal, and determining a corresponding uplink classifier ULCL split rule;
generating a distribution strategy containing a target UPF session anchor point identifier and ULCL distribution rules, and sending the distribution strategy to a policy control function PCF entity, so that the PCF entity generates a distribution instruction containing dynamic policy and charging control PCC rules according to the distribution strategy and sends the distribution instruction to a session management function SMF entity.
In a second aspect, the present invention provides a data splitting method, including:
receiving a diversion instruction comprising a dynamic Policy and Charging Control (PCC) rule sent by a Policy Control Function (PCF) entity, wherein the diversion instruction is generated by the PCF entity according to a diversion parameter and a diversion policy;
analyzing the distribution instruction to obtain an uplink classifier ULCL distribution rule corresponding to the distribution user terminal and a target user plane function UPF session anchor point identifier;
And according to ULCL distribution rules and the target UPF session anchor mark, a new target UPF session anchor of the distribution user terminal is marked.
In a third aspect, the present invention provides a data splitting apparatus comprising:
a selecting unit, configured to select a target user plane function UPF session anchor point for the offload user terminal;
a determining unit, configured to determine a corresponding uplink classifier ULCL splitting rule;
and the distribution strategy generation unit is used for generating a distribution strategy containing a target UPF session anchor point identifier and ULCL distribution rules, and sending the distribution strategy to a policy control function PCF entity so that the PCF entity can generate a distribution instruction containing dynamic policy and charging control PCC rules according to the distribution strategy and send the distribution instruction to a session management function SMF entity.
In a fourth aspect, the present invention provides a data splitting apparatus comprising:
the receiving unit is used for receiving a diversion instruction which is sent by the PCF entity and comprises a dynamic Policy and Charging Control (PCC) rule, wherein the diversion instruction is generated by the PCF entity according to the diversion parameter and the diversion policy;
the analysis unit is used for analyzing the distribution instruction to obtain an uplink classifier ULCL distribution rule corresponding to the distribution user terminal and a target user plane function UPF session anchor point identifier;
And the adding unit is used for adding a target UPF session anchor point for the streaming user terminal according to the ULCL streaming rule and the target UPF session anchor point mark.
In a fifth aspect, the present invention provides a split policy management apparatus, including: at least one processor and memory;
the memory stores computer-executable instructions;
the at least one processor executes computer-executable instructions stored by the memory, causing the at least one processor to perform the method as described in the first aspect.
In a sixth aspect, the present invention provides a session management functional entity, including: at least one processor and memory;
the memory stores computer-executable instructions;
the at least one processor executes computer-executable instructions stored by the memory, causing the at least one processor to perform the method as described in the second aspect.
In a seventh aspect, the present invention provides a computer readable storage medium having stored therein computer executable instructions which when executed by a processor are adapted to carry out the method according to the first or second aspect.
The invention provides a data distribution method, a device, a functional entity and a storage medium, wherein a distribution strategy comprising a target UPF session anchor mark and a ULCL distribution rule is further generated by selecting a target user plane function UPF session anchor point for a distribution user terminal and determining a corresponding uplink classifier ULCL distribution rule, the distribution strategy is sent to a strategy control function PCF entity, and the PCF entity generates a distribution instruction comprising a dynamic strategy and a charging control PCC rule according to the distribution strategy and sends the distribution instruction to a session management function SMF entity. The method of the invention selects the target UPF session anchor point for the streaming user terminal, and further generates the streaming strategy, thereby newly increasing the UPF session anchor point on the session path, dispatching the user terminal to the newly increased UPF session anchor point, changing the access mode that the user can only be dispatched to the exclusive UPF session anchor point or the public UPF session anchor point in the past, and better meeting the service requirement.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a schematic diagram of a network architecture of a data offloading method according to the present invention;
fig. 2 is a flow chart of a data splitting method according to a first embodiment of the present invention;
FIG. 3 is a schematic diagram of a network architecture according to an embodiment of the present invention;
fig. 4 is a flow chart of a data splitting method according to a second embodiment of the present invention;
fig. 5 is a flow chart of a data splitting method according to a third embodiment of the present invention;
fig. 6 is a flow chart of a data splitting method according to a fourth embodiment of the present invention;
fig. 7 is a flow chart of a data splitting method according to a sixth embodiment of the present invention;
fig. 8 is a flow chart of a data splitting method according to a seventh embodiment of the present invention;
FIG. 9 is a flow chart of a data splitting method according to an eighth embodiment of the present invention;
fig. 10 is a schematic diagram of a network architecture according to an eighth embodiment of the present invention;
fig. 11 is a flow chart of a data splitting method according to a ninth embodiment of the present invention
FIG. 12 is a schematic diagram of a data splitting device according to an embodiment of the present invention;
FIG. 13 is a schematic diagram illustrating a data splitting device according to another embodiment of the present invention;
FIG. 14 is a block diagram of a offloading policy management device used to implement a data offloading method of an embodiment of the invention;
fig. 15 is a block diagram of a session management function entity for implementing a data offloading method of an embodiment of the invention.
Specific embodiments of the present disclosure have been shown by way of the above drawings and will be described in more detail below. These drawings and the written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the disclosed concepts to those skilled in the art by reference to specific embodiments.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the accompanying claims.
For a clear understanding of the technical solutions of the present application, the prior art solutions will be described in detail first.
In the prior art, in a mobile edge computing (MEC, mobile Edge Computing,) scenario, a user signs up for a data network name (DNN, data Network Name), and when the user accesses a specific service, the user is scheduled to a UPF session anchor point dedicated to the DNN for service splitting according to an uplink classifier ULCL splitting rule. When the user does not access a particular service, the user is scheduled to a common UPF session anchor. In the slicing scene, a user signs up for slicing, and when the user accesses slicing service, the user is scheduled to a UPF session anchor point exclusive to the slicing according to the S-NSSAI attribute signed up by the user.
In some special scenarios, for example, the internet surfing behavior of some users needs to be monitored, the data network accessed by the users needs to be obtained, and the existing splitting mode uniformly dispatches the users needing to be monitored and other users to the dedicated UPF anchor point or the public UPF anchor point, so that the users cannot dispatch to other UPFs, and the individual monitoring of the internet surfing behavior of the specific users cannot be realized. For another example, some large activities need to ensure network experience of VIP users, and the existing mode can only schedule VIP users and common users to dedicated UPF anchor points or public UPF anchor points, so that service distribution can not be performed for VIP users independently, and special service requirements can not be met.
Aiming at the problem that the distribution mode in the prior art can only uniformly schedule users to dedicated UPF anchor points or public UPF anchor points and cannot meet special service requirements, the inventor finds that a data distribution device is connected with a 5G core network to enable the data distribution device to interact with the 5G core network, the data distribution device receives a distribution instruction, selects a target UPF session anchor point for a distribution user terminal, determines a corresponding ULCL distribution rule, further generates a distribution strategy containing a target UPF session anchor point identification and the ULCL distribution rule, and accordingly sends the distribution strategy to a PCF entity, the PCF entity generates a distribution instruction containing dynamic PCC rules according to the distribution strategy and sends the distribution instruction to an SMF entity, the SMF entity inserts ULCL distribution nodes in a session path according to the ULCL distribution rule, and newly adds the target UPF session anchor point in the session path corresponding to the distribution user terminal according to the target UPF session anchor point identification.
Therefore, the user terminal is dispatched to the newly added UPF session anchor point, the access mode that the user can only be dispatched to the special UPF session anchor point or the public UPF session anchor point in the past is changed, and the service requirement is better met.
The inventor proposes the technical scheme of the embodiment of the invention based on the creative discovery. The application scenario of the laundry treatment apparatus provided by the embodiment of the present invention is described below.
As shown in fig. 1, the data distribution method provided by the embodiment of the present invention may be applied to a data distribution system, where the data distribution system includes a data distribution device 1, a PCF entity 2, and an SMF entity 3, where the data distribution device 1 interacts with the PCF entity 2, and the PCF entity 2 interacts with the SMF entity 3. The data offloading system further includes respective network elements and devices in the RAN10, AMF entity (not shown in fig. 1), etc. 5G system. The data offloading device 1 selects a target UPF session anchor 4 for the offloading user terminal 6, and further determines a corresponding ULCL offloading rule. Further, the data offloading device 1 generates an offloading policy according to the target UPF session anchor 4 identifier and the ULCL offloading rule, and sends the offloading policy and offloading parameters to the PCF entity 2. The PCF entity 2 generates a offload instruction including the dynamic policy and charging control PCC rule according to the offload policy and offload parameters, and further sends the offload instruction to the SMF entity 3. The SMF entity 3 determines the user terminal needing to carry out the distribution service according to the distribution parameters, the SMF entity 3 inserts the ULCL distribution node 5 in the session path according to the ULCL distribution rule, and the target UPF session anchor point 4 is newly added in the session path corresponding to the distribution user terminal according to the target UPF session anchor point 4. For the traffic flow matching the rule, the offload user terminal 6 accesses the corresponding data network DN8 sequentially through the RAN10, the ULCL offload node 5, and the target UPF session anchor point 4. For traffic flows not matching the rules, the forking user terminal 6 accesses the corresponding data network DN9 sequentially through the RAN10, the ULCL forking node 5, the default UPF session anchor 7. By newly adding the UPF session anchor point on the session path, the user terminal is dispatched to the newly added UPF session anchor point, the access mode that the user can only be dispatched to the special UPF session anchor point or the public UPF session anchor point in the past is changed, and the service requirement is better met.
Example 1
Fig. 2 is a flow chart of a data splitting method according to an embodiment of the present invention, as shown in fig. 2, in which an execution body of the data splitting method according to the embodiment is a data splitting device, and the data splitting device is located in a splitting policy management apparatus, the data splitting method according to the embodiment includes the following steps:
step 101, selecting a target user plane function UPF session anchor point for the offloading user terminal, and determining a corresponding uplink classifier ULCL offloading rule.
In this embodiment, some special scenarios, for example, need to monitor the internet surfing behavior of some users, need to know the data network visited by such users, and in order to monitor the internet surfing behavior of such users, the users may be used as the split users, and a session anchor point is newly added for the split user terminal corresponding to the split users. For another example, some large activities need to ensure network experience of VIP users, and such users can be used as split users, and session anchor points are newly added for split user terminals corresponding to the split users. The data distribution device is interacted with the 5G core network of the operator, the data distribution device is communicated with the PCF, a target UPF session anchor point is selected for distribution users, and corresponding ULCL distribution rules are further determined.
The 5G system architecture is divided into an access network and a core network. The access network is used to implement radio access related functions. The core network mainly comprises the following key logic network elements: a radio access network (RAN, radio Access Network), an access and mobility management network element (AMF, access and Mobility Management Function), a session management network element (SMF, session Management Function), a user plane network element (UPF, user Plane Function), a policy control network element (Policy Control Function), a unified data management network element (UDM, unified Data Management).
As shown in fig. 3, the user terminal generally corresponds to a default UPF session anchor point, UPF PDU session anchor0 in fig. 3 is a default UPF session anchor point, namely UPF PSA0, where the UPF is used as a user plane network element of the 5G core network, and the main function is to respond to an SMF request, and as a link point between the RAN and the DN, the UPF is mainly responsible for processing user packets, such as forwarding, charging, and the like. The AMF is mainly responsible for mobility management in a mobile network, such as user location update, user registration network, user handover, etc. The SMF is mainly responsible for session management in the mobile network, such as session establishment, modification, and release, and specific functions include allocating an IP address to a user, selecting a UPF that provides a message forwarding function, and the like. Wherein the PCF is responsible for providing policies, such as QoS policies, slice selection policies, etc., to the AMF, SMF. The UE refers to a network terminal device, such as a mobile phone, an internet of things terminal device, and the like. The RAN provides the terminal devices with wireless access to devices including, but not limited to, enodebs, wiFi APs, wiMAX BSs, etc. The DN refers to an operator network, such as an IMS (IP multimedia Service), the Internet, etc., that provides a data transmission Service for a user. When the user terminal accesses the data network, the corresponding data network DN is accessed sequentially through the RNA and the UPF PSA 0.
As shown in fig. 3, the functional units in the 5G system may communicate through a next generation Network (NG) interface, for example: the UE can transmit control plane information with AN AMF entity through AN NG interface 1 (N1 for short), the RAN equipment can establish a user plane communication connection establishment channel with a UPF through AN NG interface 3 (N3 for short), the AN/RAN equipment can establish control plane signaling connection with the AMF entity through AN NG interface 2 (N2 for short), the UPF can interact information with AN SMF entity through AN NG interface 4 (N4 for short), the UPF can interact user plane data with a data network DN through AN NG interface 6 (N6 for short), the AMF entity can interact information with the SMF entity through AN NG interface 11 (N11 for short), and the SMF entity can interact information with a PCF entity through AN NG interface 7 (N7 for short).
Step 102, generating a offloading policy including a target UPF session anchor identifier and a ULCL offloading rule, and sending the offloading policy to a policy control function PCF entity, so that the PCF entity generates an offloading instruction including a dynamic policy and charging control PCC rule according to the offloading policy and sends the offloading instruction to a session management function SMF entity.
In this embodiment, a target UPF session anchor identifier corresponding to the selected target UPF session anchor is obtained, when the user terminal is determined as a forking user terminal, the target UPF session anchor is selected for the forking user terminal, the target UPF session anchor is added in the session path, and when the user terminal accesses the data network, the user terminal can access the corresponding data network DN through the target UPF session anchor. Generating a distribution strategy according to a target UPF session anchor point identifier and a ULCL distribution rule, wherein ULCL distribution nodes are inserted into a session path according to the ULCL distribution rule, the distribution strategy is sent to a PCF entity, the PCF entity further generates a distribution instruction containing a dynamic PCC strategy according to the distribution strategy, the PCF entity further sends the distribution instruction to an SMF entity, the SMF entity inserts a ULCL distribution node into the session path, a target UPF session anchor point is newly added, and a distribution user terminal accesses a corresponding data network DN sequentially through a radio access network RNA, the ULCL distribution node and the target UPF session anchor point.
In this embodiment, a target UPF session anchor is selected for the offload user terminal, and an offload policy is further generated, so that a new UPF session anchor is added on the session path, the user terminal is scheduled to the new UPF session anchor, and the access manner that the user can only be scheduled to the dedicated UPF session anchor or the public UPF session anchor in the past is changed, so that the service requirement is better satisfied.
Example two
Fig. 4 is a flow chart of a data offloading method according to a second embodiment of the present invention, as shown in fig. 4, on the basis of the data offloading method according to the first embodiment of the present invention, a target user plane function UPF session anchor point selected for a offloading user terminal in step 101 is further refined, and includes the following steps:
step 1011, obtaining a preset user terminal management split list.
In this embodiment, in combination with special service requirements, a user terminal management and distribution list is pre-established, and for a user needing to newly establish a distribution policy, user terminal information corresponding to the distribution user is added into the user terminal management list, and further a target UPF session anchor point is newly added on a session path, and the user terminal accesses a corresponding data network through the target UPF session anchor point. And for the user who has completed the distribution strategy, determining the distribution strategy end time, if the current time reaches the distribution strategy end time, further determining whether the distribution strategy is required to be distributed, and if not, removing the distribution user from a user terminal management distribution list, wherein the user terminal accesses the data network through a default UPF session anchor point.
Step 1012, determining the user terminal for distribution according to the user terminal management list, and determining the user type corresponding to the user terminal for distribution.
In this embodiment, the user terminal in the preset user terminal management splitting list is determined as a splitting user terminal needing splitting, and the user type corresponding to the splitting user terminal is obtained, for example, the user type includes VIP users, ordinary users, and the like.
Step 1013, selecting a corresponding UPF session anchor according to the user type, and determining the corresponding UPF session anchor as a target UPF session anchor.
In this embodiment, the UPF session anchors corresponding to different user types are different, for example, the VIP user corresponds to the UPF session anchor a, the normal user corresponds to the UPF session anchor B, and the corresponding UPF session anchor is further used as the target UPF session anchor.
Example III
Fig. 5 is a flow chart of a data splitting method provided by the third embodiment of the present invention, as shown in fig. 5, on the basis of the data splitting method provided by the first embodiment of the present invention, the uplink classifier ULCL splitting rule determined in step 101 is further refined, and the method includes the following steps:
step 101a, determining whether a corresponding ULCL splitting rule exists for the splitting user terminal.
In this embodiment, it is determined whether a corresponding ULCL splitting rule exists in the splitting user terminal, and if the corresponding ULCL splitting rule does not exist in the session path corresponding to the user terminal, the ULCL splitting rule may be added, that is, a ULCL splitting node is inserted in the session path.
If not, step 101b, determining the inserted ULCL splitting rule as a corresponding ULCL splitting rule.
In this embodiment, if no corresponding ULCL splitting rule exists in the session path corresponding to the splitting user terminal, it is indicated that no corresponding ULCL splitting node exists in the session path, the ULCL splitting rule is inserted in the session path, and the inserted ULCL splitting rule is determined as the corresponding ULCL splitting rule. If the corresponding UCL splitting rule exists in the session path corresponding to the splitting user terminal, the fact that the existing UCL splitting node exists in the session path is indicated, and the existing UCL splitting node can be replaced.
Example IV
Fig. 6 is a flow chart of a data offloading method according to a fourth embodiment of the present invention, as shown in fig. 6, on the basis of the data offloading method according to the first embodiment of the present invention, a offloading policy including a target UPF session anchor identifier and a ULCL offloading rule is further refined in step 102, where the method includes the following steps:
Step 1021, obtaining terminal number information corresponding to the split user terminal, and obtaining corresponding user identification information according to the terminal number information.
In this embodiment, terminal number information corresponding to the split user terminal is obtained from a preset user management list, and user identification information corresponding to the split user is further obtained according to the terminal number information, specifically, the terminal number information can be obtained from a signaling monitoring system server.
Step 1022, generating a distribution policy according to the terminal number information, the user identification information, the target UPF session anchor identification and the corresponding ULCL distribution rule.
In this embodiment, a offloading policy is generated according to terminal number information, user identification information, a UPF session anchor identifier and a corresponding ULCL offloading rule corresponding to an offloading user terminal, and an SMF entity adds the UPF session anchor identifier corresponding to the identifier to a session path corresponding to the offloading user terminal according to a target UPF session anchor identifier.
Example five
On the basis of the data splitting method provided in the fourth embodiment of the present invention, step 1021 is further refined, including the following steps:
step 1021a, user identification information corresponding to the terminal number information is obtained from the signaling monitoring system server according to the terminal number information.
In this embodiment, the data distribution device is in communication connection with the signaling monitoring system server, the data distribution device sends the user terminal number information corresponding to the distribution user to the signaling monitoring system server, the signaling monitoring system server receives the user terminal number information, the signaling monitoring system server locally searches the user identification information corresponding to the user terminal number information, and feeds the user identification information back to the data distribution device, and the data distribution device obtains the user identification information corresponding to the user terminal corresponding to the distribution user terminal.
Example six
Fig. 7 is a flow chart of a data splitting method provided in a sixth embodiment of the present invention, as shown in fig. 7, on the basis of the data splitting method provided in the first embodiment of the present invention, the step 102 of sending a splitting policy to a policy control function PCF entity is further refined, and the method includes the following steps:
step 102a, obtaining a distribution parameter, where the distribution parameter includes a terminal IP, a user permanent identifier, a common public user identifier, flow information, and a data network access identifier corresponding to a distribution user terminal.
In this embodiment, a user terminal IP corresponding to the forking user terminal, a user permanent identifier (Subscription Permanent Identifier, SUPI), a general public user identifier (Generic Public Subscription Identifier, GPSI), flow information, and a data network entry identifier (Data Network Access Identifier, DNAI) are obtained. And taking the terminal IP, the user permanent identification, the general public user identification, the stream information and the data network access identification as the distribution parameters.
The stream information comprises quintuple information, wherein the quintuple information comprises a source IP address, a source port, a destination IP address, a destination port and a transport layer protocol.
Step 102b, the offloading parameters and offloading policy are sent to the PCF entity.
In this embodiment, the data offloading device sends the offloading parameters and the offloading policy to the PCF entity, and the PCF entity further generates an offloading instruction including a dynamic policy and charging control PCC rule according to the offloading parameters and the offloading policy, where the PCF entity sends the offloading instruction including the dynamic PCC rule to the session management function SMF entity, and the SMF entity inserts the ul cl offloading node in the session path and adds the target user plane function UPF session anchor point.
In this embodiment, a target UPF session anchor point is selected for the offload user terminal, so that the UPF session anchor point can be newly added on the session path, thereby better meeting the service requirement, and changing the previous access mode that the user can only be scheduled to the dedicated UPF session anchor point or the public UPF session anchor point.
Example seven
Fig. 8 is a flow chart of a data splitting method according to a seventh embodiment of the present invention, as shown in fig. 8, in which, in a session management functional entity, an execution body of the data splitting method according to the present embodiment is a data splitting device, and the data splitting method according to the present embodiment includes the following steps:
Step 201, receiving a offloading instruction including a dynamic policy and charging control PCC rule sent by a policy control function PCF entity, where the offloading instruction is generated by the PCF entity according to an offloading parameter and an offloading policy.
In this embodiment, a splitting instruction of a dynamic PCC rule sent by a PCF entity of a policy control function is received, where the dynamic PCC rule carries a splitting parameter, and the splitting instruction is an instruction further generated by the PCF entity according to the splitting parameter and the splitting policy.
Step 202, analyzing the offloading instruction to obtain an uplink classifier ULCL offloading rule corresponding to the offloading user terminal and a target user plane function UPF session anchor identifier.
In this embodiment, the splitting instruction is parsed to obtain an uplink splitter ULCL splitting rule, a target UPF session anchor identifier, and a splitting parameter corresponding to the splitting user terminal. The offload parameters include user terminal IP, user permanent identity (Subscription Permanent Identifier, SUPI), general public user identity (Generic Public Subscription Identifier, GPSI), flow information, data network crediting identity (Data Network Access Identifier, DNAI).
And 203, marking a new target UPF session anchor point for the streaming user terminal according to the ULCL streaming rule and the target UPF session anchor point.
In this embodiment, a user terminal that needs to perform a offloading service is determined according to an offloading parameter, an SMF entity inserts a ULCL offloading node in a session path according to a ULCL offloading rule, and adds a target UPF session anchor point in a session path corresponding to the offloading user terminal according to a target UPF session anchor point identifier.
In this embodiment, the SMF inserts the ul cl splitting node and the newly added UPF session anchor point on the session path, so as to change the access mode that the user can only be scheduled to the dedicated UPF session anchor point or the public UPF session anchor point in the past, and better satisfy the service requirement.
Example eight
Fig. 9 is a flow chart of a data splitting method according to an eighth embodiment of the present invention, as shown in fig. 9, on the basis of the data splitting method according to the seventh embodiment of the present invention, step 203 is further refined, and the method includes the following steps:
step 2031, inserting the ULCL offload node according to the ULCL offload rule, and adding the target UPF session anchor according to the target UPF session anchor identifier and applying for a corresponding interface for the target UPF session anchor.
In this embodiment, a ULCL splitting node is inserted in a session path according to a ULCL splitting rule, a target UPF session anchor is further added according to a UPF session anchor identifier, and a corresponding interface is applied for the target UPF session anchor, which can be seen in fig. 10, the smf inserts ULCL (UPF Uplink Classifier) in the session path, and a new target UPF session anchor PDU session anchor, i.e., UPF PSA1, is added, the UPF PSA1 and the data network are connected through an N6 interface, and the UPF PSA1 and the ULCL splitting node are connected through an N9 interface. For the service flow matched with the rule, the service flow is transmitted to the UPF PSA1 through the N9 interface, then the local DN is accessed through the N6 interface, all the flow of the user is switched to the UPF PSA1, the user does not need to be on line again, and the end user does not feel. For traffic flows that do not match the rules, it is passed to UPF PSA0 via the N9 interface and then to the central DN (typically the Internet) via the N6 interface.
Step 2032, a message forwarding control protocol PFCP request containing the target UPF session anchor interface information is sent to the ULCL offload node, so as to trigger the ULCL offload node to create a corresponding interface tunnel according to the request.
In this embodiment, a message forwarding control protocol PFCP request including interface information of a target UPF session anchor point is sent to a ULCL splitting node, where the ULCL splitting node creates a corresponding interface tunnel according to the request, including an N9 interface and an N6 interface, as shown in fig. 10, where the ULCL splitting node is connected with the target UPF session anchor point UPF PSA1 and a default UPF session anchor point UPF PSA0 through corresponding N9 interfaces, the ULCL splitting node is connected with the RAN through an N3 interface, and the ULCL splitting node is connected with the SMF through an N4 interface, and UCLC creates the interface tunnel.
Step 2033, sending the first interface tunnel information corresponding to the ULCL offload node to the current UPF session anchor point and the target UPF session anchor point corresponding to the offload user terminal, where the target UPF session anchor point and the current session anchor point are respectively connected with the ULCL data according to the first interface tunnel information.
In this embodiment, the SMF entity sends first interface tunnel information corresponding to the ULCL to a current UPF session anchor point corresponding to the offload user terminal, that is, a default UPF session anchor point UPF PSA0 and a target UPF session anchor point UPF PSA1, where the current UPF session anchor point is connected with the ULCL offload node according to the first interface tunnel information, and the target UPF session anchor point is connected with the ULCL offload node according to the first interface tunnel information, where the first interface tunnel information refers to N9 interface related information.
Step 2034, sending second interface tunnel information corresponding to the ULCL to the radio access network RAN, so that the RAN is connected with the ULCL according to the second interface tunnel information.
In this embodiment, the SMF entity sends second interface tunnel information corresponding to the ULCL to the RAN, where the RAN is in data connection with the ULCL splitting node according to the second interface tunnel information, where the second interface tunnel information refers to N3 interface related information, so as to ensure that the RAN can send uplink data to the ULCL splitting node, and when a user accesses the network, the user terminal accesses the corresponding data network sequentially through the RAN, the ULCL splitting node, and the target UPF session anchor point.
Example nine
Fig. 11 is a flow chart of a data splitting method according to a ninth embodiment of the present invention, as shown in fig. 11, where an execution body of the data splitting method according to the present embodiment is a data splitting system, and the data splitting method according to the present embodiment includes the following steps:
in step 301, the data offloading entity selects a target user plane function UPF session anchor for the offloading user terminal, and determines a corresponding uplink classifier ULCL offloading rule.
In this embodiment, the data offloading system includes a data offloading entity, a PCF entity, and an SMF entity, where the data offloading entity interacts with the PCF entity, and the PCF entity interacts with the SMF entity. It should be noted that the data distribution system further includes respective network elements and devices in the 5G system such as the AMF entity. The data distribution entity selects a target UPF session anchor point for the distribution user and further determines a corresponding ULCL distribution rule.
In step 302, the data offloading entity generates an offloading policy including a target UPF session anchor identifier and a ULCL offloading rule, and sends the offloading policy to a policy control function PCF entity.
In this embodiment, the data offloading entity obtains a target UPF session anchor identifier corresponding to the selected target UPF session anchor, and when the user terminal is determined to be an offloading user terminal, the target UPF session anchor is selected for the offloading user terminal, the target UPF session anchor is added in the session path, and when the user terminal accesses the data network, the user terminal can access the corresponding data network DN through the target UPF session anchor. Generating a distribution strategy according to a target UPF session anchor point identifier and a ULCL distribution rule, wherein ULCL distribution nodes are inserted into a session path according to the ULCL distribution rule, the distribution strategy and distribution parameters are sent to a PCF entity, the PCF entity further generates a distribution instruction containing a dynamic PCC strategy according to the distribution strategy, the PCF entity further sends the distribution instruction to an SMF entity, the SMF entity inserts a ULCL distribution node into the session path, a target UPF session anchor point is newly added, and a distribution user terminal accesses a corresponding data network DN sequentially through a wireless access network RNA, the ULCL distribution node and the target UPF session anchor point.
In step 303, the pcf entity generates a offload instruction including the dynamic policy and charging control PCC rule according to the offload policy and sends the offload instruction to the session management function SMF entity.
In this embodiment, the PCF entity generates a offloading instruction including the dynamic policy and charging control PCC rule according to the offloading policy and the offloading parameter, and further sends the offloading instruction to the SMF entity.
And step 304, the SMF entity analyzes the distribution instruction to obtain an uplink classifier ULCL distribution rule corresponding to the distribution user terminal and a target user plane function UPF session anchor point identifier.
In this embodiment, the SMF entity receives a splitting instruction of a dynamic PCC rule sent by the PCF entity, where the dynamic PCC rule carries a splitting parameter, and the splitting instruction is an instruction further generated by the PCF entity according to the splitting parameter and a splitting policy. And the SMF entity analyzes the distribution instruction to obtain an uplink separator ULCL distribution rule, a target UPF session anchor point identifier and distribution parameters corresponding to the distribution user terminal. The offload parameters include user terminal IP, user permanent identity (Subscription Permanent Identifier, SUPI), general public user identity (Generic Public Subscription Identifier, GPSI), flow information, data network crediting identity (Data Network Access Identifier, DNAI).
In step 305, the smf entity adds a target UPF session anchor for the forking user terminal according to the ULCL forking rule and the target UPF session anchor identifier.
In this embodiment, the SMF entity determines, according to the offloading parameters, a user terminal that needs to offload services, inserts a ULCL offload node in a session path according to a ULCL offload rule, and adds a target UPF session anchor point in a session path corresponding to the offload user terminal according to a target UPF session anchor point identifier.
In this embodiment, a data offloading entity is added in the original 5G system, where the data offloading entity selects a target UPF session anchor for an offloading user terminal, and further generates an offloading policy, so that the SMF entity newly adds the UPF session anchor on a session path, dispatches the user terminal to the newly added UPF session anchor, changes an access manner that the user can only be dispatched to a dedicated UPF session anchor or a public UPF session anchor, and better satisfies service requirements.
Fig. 12 is a schematic structural diagram of a data splitting apparatus according to an embodiment of the present invention, and as shown in fig. 12, a data splitting apparatus 200 provided in this embodiment includes a selecting unit 201, a determining unit 202, and a splitting policy generating unit 203.
Wherein, the selecting unit 201 is configured to select a target user plane function UPF session anchor point for the forking user terminal. A determining unit 202 is configured to determine a corresponding uplink classifier ULCL splitting rule. And the offloading policy generating unit 203 is configured to generate an offloading policy including the target UPF session anchor identifier and the ULCL offloading rule, and send the offloading policy to the policy control function PCF entity, so that the PCF entity generates an offloading instruction including the dynamic policy and charging control PCC rule according to the offloading policy, and sends the offloading instruction to the session management function SMF entity.
Optionally, the selecting unit is further configured to obtain a preset user terminal management split list; determining a distribution user terminal according to the user terminal management list, and determining a user type corresponding to the distribution user terminal; selecting a corresponding UPF session anchor point according to the user type, and determining the corresponding UPF session anchor point as a target UPF session anchor point
Optionally, the determining unit is further configured to determine whether a corresponding ULCL splitting rule exists in the splitting user terminal; if not, determining the inserted UCL split rule as a corresponding UCL split rule.
Optionally, the offloading policy generating unit is further configured to obtain terminal number information corresponding to an offloading user terminal, and obtain corresponding user identification information according to the terminal number information; and generating a distribution strategy according to the terminal number information, the user identification information, the target UPF session anchor identification and the corresponding ULCL distribution rule.
Optionally, the offloading policy generating unit is further configured to obtain, from the signaling monitoring system server according to the terminal number information, user identification information corresponding to the terminal number information.
Optionally, the offloading policy generating unit is further configured to obtain offloading parameters, where the offloading parameters include a terminal IP, a user permanent identifier, a universal public user identifier, flow information, and a data network access identifier corresponding to an offloading user terminal; and sending the distribution parameters and the distribution strategy to the PCF entity.
Fig. 13 is a schematic structural diagram of a data splitting device according to another embodiment of the present invention, as shown in fig. 13, the data splitting device 300 provided in this embodiment includes a receiving unit 301, an analyzing unit 302, and an adding unit 303.
The receiving unit 301 is configured to receive a offloading instruction including a dynamic policy and charging control PCC rule sent by a PCF entity, where the offloading instruction is generated by the PCF entity according to an offloading parameter and an offloading policy; the parsing unit 302 is configured to parse the offloading instruction to obtain an uplink classifier ULCL offloading rule corresponding to the offloading user terminal and a target user plane function UPF session anchor identifier; an adding unit 303, configured to add a new target UPF session anchor to the forking user terminal according to the ULCL forking rule and the target UPF session anchor identifier.
Optionally, the adding unit is further configured to insert a ULCL offload node according to a ULCL offload rule, and add a target UPF session anchor according to the target UPF session anchor identifier and apply for a corresponding interface for the target UPF session anchor; a message forwarding control protocol (PFCP) request containing target UPF session anchor point interface information is sent to a UCL shunting node so as to trigger the UCL shunting node to create a corresponding interface tunnel according to the request; the method comprises the steps of sending first interface tunnel information corresponding to a ULCL distribution node to a current UPF session anchor point and a target UPF session anchor point corresponding to a distribution user terminal, so that the target UPF session anchor point and the current session anchor point are respectively connected with ULCL data according to the first interface tunnel information; and sending second interface tunnel information corresponding to the ULCL to the radio access network RAN so that the RAN is connected with the ULCL according to the second interface tunnel information.
Fig. 14 is a block diagram of a offloading policy management device for implementing a data offloading method of an embodiment of the present invention, and as shown in fig. 14, the offloading policy management device 400 includes: a memory 401, and a processor 402.
Memory 401 stores computer-executable instructions;
the processor executes 402 the computer-executable instructions stored in the memory, causing the processor to perform the method provided in any one of embodiments one through six.
Fig. 15 is a block diagram of a session management function entity for implementing a data offloading method of an embodiment of the present invention, and as shown in fig. 15, the session management function entity 500 includes: memory 501, processor 502.
Memory 501 stores computer-executable instructions;
the processor executes 502 memory-stored computer-executable instructions that cause the processor to perform the method provided in any one of embodiments seven through eight.
In an exemplary embodiment, there is also provided a computer-readable storage medium having stored therein computer-executable instructions for performing the method of any one of the above embodiments by a processor.
In an exemplary embodiment, a computer program product is also provided, comprising a computer program for executing the method of any of the above embodiments by a processor.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It is to be understood that the invention is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (13)
1. A method of data offloading, the method comprising:
selecting a target user plane function UPF session anchor point for the split user terminal, and determining a corresponding uplink classifier ULCL split rule;
generating a distribution strategy containing a target UPF session anchor point identifier and a ULCL distribution rule, sending the distribution strategy to a policy control function PCF entity, enabling the PCF entity to generate a distribution instruction containing a dynamic policy and charging control PCC rule according to the distribution strategy, sending the distribution instruction to a session management function SMF entity, enabling the SMF entity to analyze the distribution instruction to obtain an uplink classifier ULCL distribution rule corresponding to a distribution user terminal and a target user plane function UPF session anchor point identifier, and enabling the distribution user terminal to be a new target UPF session anchor point according to the ULCL distribution rule and the target UPF session anchor point identifier.
2. The method according to claim 1, wherein selecting a target user plane function UPF session anchor for the forking user terminal comprises:
acquiring a preset user terminal management shunt list;
determining a distribution user terminal according to the user terminal management list, and determining a user type corresponding to the distribution user terminal;
and selecting a corresponding UPF session anchor point according to the user type, and determining the corresponding UPF session anchor point as a target UPF session anchor point.
3. The method of claim 1, wherein the determining the corresponding uplink classifier, ul cl, splitting rule comprises:
determining whether a corresponding ULCL distribution rule exists in the distribution user terminal;
if not, determining the inserted UCL split rule as a corresponding UCL split rule.
4. The method of claim 1, wherein generating a offload policy that includes a target UPF session anchor identification and a ULCL offload rule comprises:
acquiring terminal number information corresponding to a distribution user terminal, and acquiring corresponding user identification information according to the terminal number information;
and generating a distribution strategy according to the terminal number information, the user identification information, the target UPF session anchor identification and the corresponding ULCL distribution rule.
5. The method according to claim 4, wherein the obtaining the corresponding user identification information according to the terminal number information includes:
and acquiring user identification information corresponding to the terminal number information from a signaling monitoring system server according to the terminal number information.
6. The method of claim 1, wherein the sending the offload policy to a policy control function PCF entity comprises:
acquiring a distribution parameter, wherein the distribution parameter comprises a terminal IP, a user permanent identifier, a general public user identifier, stream information and a data network access identifier corresponding to a distribution user terminal;
and sending the distribution parameters and the distribution strategy to the PCF entity.
7. A method of data offloading, the method comprising:
receiving a diversion instruction comprising a dynamic Policy and Charging Control (PCC) rule sent by a Policy Control Function (PCF) entity, wherein the diversion instruction is generated by the PCF entity according to a diversion parameter and a diversion policy;
analyzing the distribution instruction to obtain an uplink classifier ULCL distribution rule corresponding to the distribution user terminal and a target user plane function UPF session anchor point identifier;
and according to ULCL distribution rules and the target UPF session anchor mark, a new target UPF session anchor of the distribution user terminal is marked.
8. The method of claim 7, wherein the identifying the new target UPF session anchor for the forking user terminal according to the ULCL forking rules and the target UPF session anchor comprises:
inserting ULCL shunting nodes according to the ULCL shunting rules, adding target UPF session anchor points according to target UPF session anchor point identifiers, and applying corresponding interfaces for the target UPF session anchor points;
a message forwarding control protocol (PFCP) request containing target UPF session anchor point interface information is sent to a UCL shunting node so as to trigger the UCL shunting node to create a corresponding interface tunnel according to the request;
the method comprises the steps of sending first interface tunnel information corresponding to a ULCL distribution node to a current UPF session anchor point and a target UPF session anchor point corresponding to a distribution user terminal, so that the target UPF session anchor point and the current session anchor point are respectively connected with ULCL data according to the first interface tunnel information;
and sending second interface tunnel information corresponding to the ULCL to the radio access network RAN so that the RAN is connected with the ULCL according to the second interface tunnel information.
9. A data splitting device, the device comprising:
a selecting unit, configured to select a target user plane function UPF session anchor point for the offload user terminal;
A determining unit, configured to determine a corresponding uplink classifier ULCL splitting rule;
and the distribution strategy generating unit is used for generating a distribution strategy comprising a target UPF session anchor point identifier and a ULCL distribution rule, transmitting the distribution strategy to a strategy control function PCF entity, enabling the PCF entity to generate a distribution instruction comprising a dynamic strategy and charging control PCC rule according to the distribution strategy, transmitting the distribution instruction to a session management function SMF entity, enabling the SMF entity to analyze the distribution instruction to obtain an uplink classifier ULCL distribution rule corresponding to the distribution user terminal and a target user plane function UPF session anchor point identifier, and enabling the distribution user terminal to be newly added with the target UPF session anchor point according to the ULCL distribution rule and the target UPF session anchor point identifier.
10. A data splitting device, the device comprising:
the receiving unit is used for receiving a diversion instruction which is sent by the PCF entity and comprises a dynamic Policy and Charging Control (PCC) rule, wherein the diversion instruction is generated by the PCF entity according to the diversion parameter and the diversion policy;
the analysis unit is used for analyzing the distribution instruction to obtain an uplink classifier ULCL distribution rule corresponding to the distribution user terminal and a target user plane function UPF session anchor point identifier;
And the adding unit is used for adding a target UPF session anchor point for the streaming user terminal according to the ULCL streaming rule and the target UPF session anchor point mark.
11. A split policy management apparatus, comprising: at least one processor and memory;
the memory stores computer-executable instructions;
the at least one processor executing computer-executable instructions stored in the memory causes the at least one processor to perform the method of any one of claims 1-6.
12. A session management functional entity, comprising: at least one processor and memory;
the memory stores computer-executable instructions;
the at least one processor executing computer-executable instructions stored in the memory causes the at least one processor to perform the method of any one of claims 7-8.
13. A computer readable storage medium having stored therein computer executable instructions which when executed by a processor are adapted to implement the method of any of claims 1-6 or 7-8.
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| CN117376922A (en) * | 2022-06-27 | 2024-01-09 | 中兴通讯股份有限公司 | Construction method of data distribution system, network equipment and storage medium |
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