CN118138535A

CN118138535A - Information transmission and processing method and device

Info

Publication number: CN118138535A
Application number: CN202211541159.5A
Authority: CN
Inventors: 梁亚从; 王胡成; 侯云静; 徐晖; 包施晗
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2022-12-02
Filing date: 2022-12-02
Publication date: 2024-06-04
Also published as: WO2024114708A1

Abstract

The application provides an information transmission and processing method and device, and the information transmission method of the embodiment of the application comprises the following steps: the method comprises the steps that a session management function SMF obtains tag information of a terminal, wherein the tag information comprises at least one of a first tag and a second tag, the first tag is used for indicating service scenes and communication characteristic information corresponding to services of the terminal, and the second tag is used for indicating encryption protection information corresponding to access information of the terminal; and the SMF sends the label information of the terminal to a user plane function UPF. In the embodiment of the application, the UPF can classify the terminal and/or the service in finer granularity according to the label information, and further can carry out fine management on the user traffic.

Description

Information transmission and processing method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to an information transmission method, an information processing method, and an information transmission device.

Background

In the related technology, terminals are divided into a high-priority terminal, a common-priority terminal and a low-priority terminal according to policies of operators, deployment scenes, user configuration files, available services and the like, and when a communication system is congested, access coarsening operation of the terminals is allowed or prevented based on the priority of the terminals, so that fine management of user traffic is not facilitated.

Disclosure of Invention

The application aims to provide an information transmission and processing method and device, so as to solve the problem of how to carry out fine management on user traffic.

In order to achieve the above object, the present application provides an information transmission method, including:

the method comprises the steps that a session management function SMF obtains tag information of a terminal, wherein the tag information comprises at least one of a first tag and a second tag, the first tag is used for indicating service scenes and communication characteristic information corresponding to services of the terminal, and the second tag is used for indicating encryption protection information corresponding to access information of the terminal;

And the SMF sends the label information of the terminal to a user plane function UPF.

Optionally, the first tag includes a service scene identifier and a service class identifier corresponding to a service of the terminal, where different service class identifiers correspond to different communication feature information.

Optionally, the second tag includes a security level identification of the terminal;

or the second label comprises a security level identifier of the terminal and a priority identifier of the terminal;

wherein, different priorities correspond to different access rights, and different security level identifiers correspond to different encryption protection information.

Optionally, the session management function SMF obtains tag information of a terminal, including:

and the SMF acquires the label information of the terminal sent by the Unified Data Management (UDM).

Optionally, before the session management function SMF obtains the tag information of the terminal, the method further includes:

The SMF acquires a first PDU session establishment request sent by an access and mobility management function AMF;

Or the SMF acquires a second PDU session establishment request sent by the signed SMF.

Optionally, the SMF sends tag information of the terminal to a user plane function UPF, including:

The SMF sends the label information to the UPF through an N4 session establishment request.

Optionally, the method of the embodiment of the present application further includes:

the SMF acquires an N4 session establishment response sent by the UPF, wherein the N4 session establishment response is used for indicating the UPF to receive the label information.

Optionally, the UPF is an anchor UPF or a non-anchor UPF, wherein the anchor UPF is a UPF directly connected to the DN of the data network, and the non-anchor UPF is a UPF not directly connected to the DN.

Acquiring operation strategy information, wherein the operation strategy information comprises a corresponding relation between label information of a terminal and UPF operation;

And sending the operation strategy information to the UPF.

The embodiment of the application also provides an information processing method, which comprises the following steps:

The method comprises the steps that a user plane function UPF obtains tag information of a terminal sent by a session management function SMF, wherein the tag information comprises at least one of a first tag and a second tag, the first tag is used for indicating service scene and communication characteristic information corresponding to service of the terminal, the second tag is used for indicating encryption protection information corresponding to access information of the terminal, and the tag information corresponds to a packet data unit PDU session identifier one by one;

and under the condition that the data packet corresponding to the PDU session identifier is detected, executing the UPF operation corresponding to the label information on the data packet.

And acquiring operation policy information sent by the SMF, wherein the operation policy information comprises the corresponding relation between label information of the terminal and UPF operation.

The embodiment of the application also provides an information transmission device, which comprises a memory, a transceiver and a processor;

A memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

Acquiring tag information of a terminal through a transceiver, wherein the tag information comprises at least one of a first tag and a second tag, the first tag is used for indicating service scenes and communication characteristic information corresponding to services of the terminal, and the second tag is used for indicating encryption protection information corresponding to access information of the terminal;

the tag information of the terminal is transmitted to the user plane function UPF via the transceiver.

Optionally, the processor further implements the following steps when executing the program:

tag information of the terminal transmitted by the unified data management UDM is acquired through the transceiver.

Acquiring a first PDU session establishment request sent by an access and mobility management function (AMF) through a transceiver;

Or obtaining a second PDU session establishment request sent by the signed SMF.

the tag information is sent to the UPF by an N4 session setup request using the transceiver.

and acquiring an N4 session establishment response sent by the UPF through a transceiver, wherein the N4 session establishment response is used for indicating the UPF to receive the label information.

The embodiment of the application also provides an information processing device, which comprises a memory, a transceiver and a processor;

Acquiring tag information of a terminal sent by a session management function SMF through a transceiver, wherein the tag information comprises at least one of a first tag and a second tag, the first tag is used for indicating service scene and communication characteristic information corresponding to service of the terminal, the second tag is used for indicating encryption protection information corresponding to access information of the terminal, and the tag information corresponds to a packet data unit PDU session identifier one by one;

The embodiment of the application also provides an information transmission device, which comprises:

the terminal comprises a first acquisition unit, a second acquisition unit and a storage unit, wherein the first acquisition unit is used for acquiring tag information of a terminal, the tag information comprises at least one of a first tag and a second tag, the first tag is used for indicating service scene and communication characteristic information corresponding to service of the terminal, and the second tag is used for indicating encryption protection information corresponding to access information of the terminal;

And the first sending unit is used for sending the label information of the terminal to a user plane function UPF.

The embodiment of the application also provides an information processing device, which comprises:

A second obtaining unit, configured to obtain tag information of a terminal sent by a session management function SMF, where the tag information includes at least one of a first tag and a second tag, where the first tag is used to indicate a service scenario and communication feature information corresponding to a service of the terminal, the second tag is used to indicate encryption protection information corresponding to access information of the terminal, and the tag information corresponds to a packet data unit PDU session identifier one to one;

And the processing unit is used for executing the UPF operation corresponding to the label information on the data packet under the condition that the data packet corresponding to the PDU session identifier is detected.

The embodiment of the present application also provides a processor-readable storage medium storing a computer program for causing the processor to execute the steps of the information transmission method as described above or to execute the steps of the information processing method as described above.

The technical scheme of the application has at least the following beneficial effects:

In the embodiment of the application, a session management function SMF acquires tag information of a terminal, wherein the tag information comprises at least one of a first tag and a second tag, the first tag is used for indicating service scene and communication characteristic information corresponding to a service of the terminal, and the second tag is used for indicating encryption protection information corresponding to access information of the terminal; the SMF sends the label information of the terminal to a user plane function UPF, so that the UPF can classify the terminal and/or the service in finer granularity according to the label information, and further can finely manage the user traffic.

Drawings

FIG. 1 is a block diagram of a network system to which embodiments of the present application are applicable;

Fig. 2 shows a PDU session establishment diagram for UE to DN;

Fig. 3 is a schematic flow chart of an information transmission method according to an embodiment of the application;

FIG. 4 is a schematic diagram of tag information according to an embodiment of the present application;

FIG. 5 is a flow chart of an information processing method according to an embodiment of the present application;

FIG. 6 is a schematic diagram showing an interaction of an information transmission method according to an embodiment of the present application;

FIG. 7 is a second schematic diagram illustrating an information transmission method according to an embodiment of the application;

Fig. 8 is a block diagram showing the structure of an information transmission apparatus according to an embodiment of the present application;

fig. 9 is a block diagram showing the configuration of an information processing apparatus according to an embodiment of the present application;

Fig. 10 is a schematic block diagram of an information transmission device according to an embodiment of the present application;

fig. 11 shows a block diagram of an information processing apparatus according to an embodiment of the present application.

Detailed Description

The technical scheme provided by the embodiment of the application can be applied to various systems. For example, applicable systems may be global system for mobile communications (Global System of Mobile communication, GSM), code division multiple access (Code Division Multiple Access, CDMA), wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA), time division synchronous CDMA (Time Division Synchronous Code Division Multiple Access, TD-SCDMA), general packet Radio service (GENERAL PACKET Radio service, GPRS), long term evolution (Long Term Evolution, LTE) including TD-LTE and FDD LTE, long term evolution-advanced (Long Term Evolution Advanced, LTE-a), universal mobile system (Universal Mobile Telecommunication System, UMTS), worldwide interoperability for microwave access (Worldwide Interoperability For Microwave Access, wiMAX), new air interface (New Radio, NR) system, and the like. Terminal devices and network devices are included in these various systems. Core network parts such as evolved packet system (Evloved PACKET SYSTEM, EPS), 5G system (5 GS/5 GC), etc. may also be included in the system.

Fig. 1 shows a block diagram of a wireless communication system to which an embodiment of the present application is applicable. The wireless communication system includes a terminal 11 and a network device 12. The terminal 11 may also be referred to as a terminal device or a User Equipment (UE), and the terminal 11 may be a terminal-side device such as a Mobile phone, a tablet Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer) or a Personal digital assistant (Personal DIGITAL ASSISTANT, PDA), a palm Computer, a netbook, an Ultra-Mobile Personal Computer (Ultra-Mobile Personal Computer, UMPC), a Mobile internet device (Mobile INTERNET DEVICE, MID), a wearable device (Wearable Device) or a vehicle-mounted device (VUE), a pedestrian terminal (PUE), and the wearable device includes: a bracelet, earphone, glasses, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network device 12 may be a base station or a core network, wherein the base station may be referred to as a node B, an evolved node B, an access Point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a Basic service set (Basic SERVICE SET, BSS), an Extended service set (Extended SERVICE SET, ESS), a node B, an evolved node B (eNB), a home node B, a home evolved node B, a WLAN access Point, a WiFi node, a transmission and reception Point (TRANSMITTING RECEIVING Point, TRP), or some other suitable terminology in the field, and the base station is not limited to a specific technical vocabulary so long as the same technical effect is achieved, and it should be noted that, in the embodiment of the present application, only the base station in the NR system is taken as an example, but the specific type of the base station is not limited.

The following description is presented to enable one skilled in the art to better understand the embodiments of the present invention.

1. The packet data Unit (PACKET DATA Unit, PDU) session establishment procedure.

(1) The UE sends a session establishment request message to the AMF.

(2) The access and mobility management function (ACCESS AND Mobility Management Function, AMF) selects the appropriate session management function (Session Management Function, SMF) for the session based on the data network name (Data Network Name, DNN), single network slice selection assistance information (Single Network Slice Selection Assistance Information, S-NSSAI), subscription data, and the like.

(3) The AMF invokes the session service of the selected SMF to trigger the session establishment.

(4) The SMF acquires subscription data of the UE from Unified data management (Unified DATA MANAGEMENT, UDM).

(5) This step is optional, and the SMF performs secondary authentication and authorization of the session with an AAA server in the Data Network (DN).

(6) The SMF performs policy control function (Policy Control Function) PCF selection, and SM policy association setup or modification.

(7) The SMF performs user plane functions (User Plane Function) UPF selection.

(8) The SMF establishes AN end-to-end user plane connection between the UE, AN Access Network (AN), and a UPF.

Finally, as shown in fig. 2, the PDU session establishment from UE to DN is completed.

2. Prioritization of terminals or users

In the related art, terminals are classified into by an access identification (ACCESS IDENTITY) and an access category (Access Categories):

(1) High priority terminals: terminals for MPS, MCS, emergency services, public security, and the like are configured in the USIM card, ACCESS IDENTITY is set to 1,2,11-15 as shown in table 1.

(2) Common terminals: common commercial user terminals ACCESS IDENTITY are 0,Access Categories and are not 1 as shown in table 1.

(3) Low priority terminals: the terminal configured with EAB service (supporting delay tolerant service) ACCESS IDENTITY is 0,Access Categories to be 1, as shown in table 1.

TABLE 1

In the event of congestion in a 5G system, different criteria (access identity "ACCESS IDENTITY" and access category "Access Categories") will be used to determine which terminals are allowed or blocked from accessing, depending on the policies of the operator, deployment scenario, user profile and available services.

3. Prioritization of traffic

(1) Emergency call service: the network provides IMS emergency call services for the user. The network may provide emergency call services to normally registered UEs and emergency registered UEs.

(2) MPS (Multimedia Priority Service): an end-to-end priority guarantee is provided to provide priority handling for voice, video, and data communications for service subscribers (government-authorized personnel, EMERGENCY MANAGEMENT officials and/or other authorized users), increasing the likelihood of session success. In case of congestion, the service user is allowed to obtain system resources preferentially.

(3) Mission communication service (Mission CRITICAL SERVICE, MCS): clustered communication services are provided for mission critical applications (Mission Critical Organizations and mission critical applications for other businesses and organizations)(, e.g., utilities (railroads) (railways), from utility users, e.g., mission critical organizations and other businesses and organizations. The network provides a priority guarantee for MCS traffic similar to MPS traffic.

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

As shown in fig. 3, an embodiment of the present application provides an information transmission method, including:

Step 301: the session management function SMF obtains tag information of a terminal, wherein the tag information comprises at least one of a first tag and a second tag, the first tag is used for indicating service scene and communication characteristic information corresponding to the service of the terminal, and the second tag is used for indicating encryption protection information corresponding to access information of the terminal.

In this step, during the PDU session establishment, the SMF acquires tag information of the terminal (or a user corresponding to the terminal) from the UDM.

Alternatively, the traffic scenario may be a 5G traffic scenario, such as enhanced mobile bandwidth (Enhanced Mobile Broadband, eMBB), low latency high reliability Communication (Ultra-Reliable Low-Latency Communications, uRLLC), large scale machine Communication (MASSIVE MACHINE TYPE Communication, mMTC).

The communication characteristic information can be indoor communication, high-density urban hot spot communication, intelligent internet of vehicles communication and the like. I.e. a finer granularity of the traffic scenario may be divided according to the above-mentioned communication characteristic information.

The encryption protection information may specifically be whether or not access information of the terminal is encrypted.

Step 302: and the SMF sends the label information of the terminal to a user plane function UPF.

Optionally, the UPF may divide the service scenario in a finer granularity according to the service scenario and the communication feature information, and determine whether to allow or reject the terminal access based on the communication feature information in the service scenario. And/or, in the case that the encryption protection information indicates to encrypt the access information of the terminal, the UPF transmits the data packet by adopting a specified encryption protocol according to the encryption protection information.

Optionally, as shown in fig. 4, the first tag includes a service scene identifier and a service class identifier corresponding to a service of the terminal, where different service class identifiers correspond to different communication feature information.

The service scene can be further divided by the communication characteristic information to obtain a plurality of service sub-scenes (or specific scenes), and the corresponding relation among the service scene, the specific scenes under the service scene, the service grade identification and the communication characteristic information is shown in table 2.

TABLE 2

Optionally, as shown in fig. 4, the second tag includes a security level identifier of the terminal;

In an embodiment of the present application, the correspondence between the security level identifier, the user priority identifier, and the encryption protection information is shown in table 3.

TABLE 3 Table 3

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In the embodiment of the application, under the condition that the SMF locally stores the label information of the terminal, the SMF can also locally acquire the label information of the terminal.

In the roaming scenario, the SMF obtains a first PDU session establishment request sent by the AMF, such as a PDU session context establishment request (Nsmf _ PDUSession _ CreateSMContext Request); in the roaming scenario, the SMF is a home SMF, and the home SMF obtains a second PDU session establishment request, such as a PDU session context establishment request (Nsmf _ PDUSession _ CreateSMContext Request), sent by a subscription SMF; the SMF acquires the label information of the terminal based on the acquired first PDU session establishment request or second PDU session establishment request.

Optionally, the UPF is an anchor UPF or a non-anchor UPF, wherein the anchor UPF is a UPF directly connected to a Data Network (DN), and the non-anchor UPF is a UPF not directly connected to the DN.

In a multi-anchor UPF scenario, the UPF of the embodiment of the application can be either an anchor UPF or a non-anchor UPF, that is, the UPF operation corresponding to the label information can be executed by the anchor UPF or the UPF operation corresponding to the label information can be executed by the non-anchor UPF.

In particular, to support selective traffic routing or Session and traffic Continuity Mode (SSC Mode) 3, the smf may control the selective routing of data of PDU sessions to different N6 interfaces. The two main modes are an uplink classifier (Uplink Classifier, UL CL) as shown in fig. 5, and a Branching Point (BP) as shown in fig. 6.

Uplink classifier (UL CL) mode: in the scenario of multi-anchor UPF, for PDU Session of the type IPv4, IPv6, IPv4v6, ethernet, SMF may insert an uplink classifier (Uplink Classifier) called "UL CL" for short on the data transmission path of the PDU Session; the "UL CL" function is provided in the UPF for the purpose of forwarding packets that meet the traffic filtering rules to the designated path, which acts somewhat like a routing table. Insertion and deletion of "UL CL" is controlled by SMF, when a "UL CL" is inserted into a PDU Session data channel, the PDU Session has multiple PDU Session anchor points that provide multiple different paths to access the same DN.

Branch Point (BP) mode: one PDU session may be associated with multiple IPv6 prefixes, i.e., a multi-host PDU session that accesses one DN through multiple PDU session anchors. The data channels corresponding to the PDU session anchor points are finally converged into a common UPF, the common UPF has the function of a branch point, the branch point forwards uplink service data to different PDU anchor points upwards, and the data from the anchor points are merged downwards. The multi-host PDU session is only applied to the PDU session of IPv6, and the UE informs the network of whether the multi-host IPv6 session is supported when requesting to establish the PDU session of the type IPv6 or IPv4v 6.

The SMF decides to establish a new UPF anchor (PDU Session Anchor, PSA), selects one UPF as UL CL or BP and establishes BP or UL CL for the PDU session using N4.

Since there are a plurality of UPFs in the above multi-anchor UPF scenario, the UPF operation corresponding to the tag information may be performed by UL CL/BP or anchor 1 (anchor 1) or anchor 2 (anchor 2) as needed.

Acquiring operation strategy information, wherein the operation strategy information comprises a corresponding relation between label information of a terminal and UPF operation; and sending the operation strategy information to the UPF.

In the embodiment of the application, the corresponding relation between the label information and the UPF is stored in the PCF, the PCF sends the operation strategy to the SMF, the SMF issues the operation strategy to the corresponding UPF, and the UPF executes the operation corresponding to the label information.

As shown in fig. 5, an embodiment of the present application further provides an information processing method, including:

Step 501: the user plane function UPF obtains tag information of a terminal sent by the session management function SMF, wherein the tag information comprises at least one of a first tag and a second tag, the first tag is used for indicating service scene and communication characteristic information corresponding to service of the terminal, the second tag is used for indicating encryption protection information corresponding to access information of the terminal, and the tag information corresponds to a packet data unit PDU session identifier one by one.

Step 502: and under the condition that the data packet corresponding to the PDU session identifier is detected, executing the UPF operation corresponding to the label information on the data packet.

For example, if the security level identification in the identification information is high, the UPF transmits packets using a specified encryption protocol, such as internet security (Internet Protocol Security, IPsec) or secure socket layer (Secure Sockets Layer, SSL) SSL/transport layer security (Transport Layer Security, TLS). For another example, the traffic scenario identity is uRLLC, the traffic continuity mode may not take SSC mode 2, etc.

Here, the tag information of the terminal is described in detail in the above information transmission method information, and will not be described here again.

It should be noted that, the interaction process between the SMF and the UPF is described in detail in the above embodiment of the information transmission method, which is not described herein again.

In the embodiment of the application, a user plane function UPF acquires label information of a terminal sent by a session management function SMF, wherein the label information comprises at least one of a first label and a second label, the first label is used for indicating service scene and communication characteristic information corresponding to service of the terminal, the second label is used for indicating encryption protection information corresponding to access information of the terminal, and the label information corresponds to a packet data unit PDU session identifier one by one; and under the condition that the data packet corresponding to the PDU session identifier is detected, executing the UPF operation corresponding to the label information on the data packet. The UPF can classify the terminal and/or the service in finer granularity according to the label information, and further can finely manage the user traffic.

The following describes the aspects of the application in detail with reference to specific examples.

In an embodiment of the present application, as shown in fig. 6, an information transmission method of an embodiment of the present application includes:

1. The UE sends a PDU session establishment request (PDU Session Establishment Request) to the AMF requesting establishment of a PDU session.

2. The AMF selects the appropriate SMF for the PDU session.

3. The AMF applies for session establishment by sending a PDU session context establishment request (Nsmf _ PDUSession _ CreateSMContext Request) to the SMF.

4. After receiving the request, the SMF acquires the subscription data of the UE from the UDM, wherein the subscription data of the user comprises the label information of the UE.

Or the SMF locally queries the tag information.

5. The SMF sends a PDU session context setup response (Nsmf _ PDUSession _ CreateSMContext Response) to the AMF indicating the session setup result.

6. And performing the second authentication of PDU session establishment, wherein the step is performed according to the actual situation.

7A, SMF performs PCF selection.

And 7b, the SMF and the PCF execute a session policy establishment flow. The PCF may issue an associated session policy.

8. The SMF performs UPF selection.

9. The SMF initiates a session policy update flow to the PCF, and carries information such as the selected UPF, the IP address allocated to the UE, and the like.

10A, SMF initiates an N4 session procedure to the selected UPF via a signaling N4 session setup request (N4 Session Establishment Request), which carries the tag data.

10B, the UPF returns an N4 session establishment result to the SMF by signaling an N4 session establishment response (N4 Session Establishment Reponse), and responds to whether tag data is received.

11. The SMF sends an N1N2 interface Communication messaging message (Namf _communication_n1n2MESSAGETRANSFER message) to the AMF, after which the AMF returns an N1N2 interface Communication messaging (Namf _communication_n1n2 MESSAGETRANSFER) response message to the SMF.

12. The AMF sends an N2 PDU session request message (N2 PDU Session Request message) to the gNB, sends CN assisted RAN parameter tuning information, requesting to establish the session.

13. And establishing user plane connection between the base station and the UE.

14. The gNB replies an N2 PDU session response message (N2 PDU Session Response message) to the AMF, carrying the N3 tunnel information of the RAN node, and the establishment of the uplink data channel is completed at this time.

15. The AMF sends a PDU session context update request (Nsmf _ PDUSession _ UpdateSMContext Request) message to the SMF, forwards the N2 SM information sent by the gNB to the AMF, carrying the N3 tunnel information of the RAN node.

16A, SMF initiates an N4 session modification request (N4 Session Modification Request) message to UPF, carrying N3 tunnel information.

16B, UPF sends an N4 session modification response (N4 Session Modification Response) to the SMF.

The UPF already knows the tunnel endpoint information on the RAN side at this time, and the downstream data channel establishment is completed.

16C, the SMF registers with the UDM, carrying SUPI, DNN, S-NSSAI, PDU Session ID and other information, and the UDM stores related data.

17. The SMF sends a PDU session context update response (Nsmf _ PDUSession _ UpdateSMContext Response) message to the AMF.

18. The SMF sends a status notification (Nsmf _ PDUSession _ SMContextNotify) message of the PDU session SM context to the AMF indicating that the session setup is complete.

19. The SMF also needs to issue an IPv6 routing advertisement to the UE if the UE requests to establish an IPv6 type PDU Session.

20. If the UE supports the transmit port management information container (Port Management Information Containers), the SMF needs to inform the PCF that 5GS Bridge information is available.

21. If the session establishment fails after step 4, the SMF needs to initiate a flow to the UDM to register and subscribe.

In one embodiment of the present application, for Home routing roaming (Home-routed Roaming) scenario, performing actions corresponding to label information in a Home public land mobile network (Home Public Land Mobile Network, H-PLMN), where the H-PLMN includes a Home UPF (Home UPF, H-UPF), a Home SMF (Home SMF, H-SMF), a Home PCF (Home PCF, H-PCF), and the subscribed public land mobile network (Visited Public Land Mobile Network, V-PLMN) includes: subscription SMF (VISITED SMF, V-SMF), subscription UPF (activated UPF, V-UPF).

The tag information is stored in the UDM, and the H-SMF acquires the tag information through signaling (subscription data retrieval or subscription) in step 7 below, and also transmits the tag information to the H-UPF through establishment of N4 signaling in step 12a, where the H-UPF performs an operation corresponding to the user tag on the data packet.

As shown in fig. 7, the information transmission method according to the embodiment of the present application includes:

2. The AMF selects a subscribed SMF (V-SMF) and a home SMF (H-SMF) for the PDU session.

3A, AMF sends PDU session context setup request (Nsmf _ PDUSession _ CreateSMContext Request) to V-SMF applying for session setup.

3B, V-SMF sends PDU session context setup response (Nsmf _ PDUSession _ CreateSMContext Response) message to AMF.

4. The V-SMF selects a UPF for the subscribed PLMN (VISITED PLMN, V-PLMN).

5. The V-SMF initiates an N4 session setup procedure using the selected V-UPF.

6. The V-SMF forwards the UE setup PDU session request to the H-SMF.

7. The H-SMF, upon receiving the request, obtains subscription data for the UE from the UDM, the subscription data for the user including tag information (or described as tag data) for the UE.

8. Performing a second authentication of PDU session establishment, the step being performed according to the actual situation

9A, H-SMF performs H-PCF (Home PCF) selection.

9B, H-SMF and H-PCF execute session policy establishment procedure. The H-PCF may issue the associated session policy.

10. H-SMF performs H-UPF selection.

11. The H-SMF initiates a session policy update flow to the H-PCF and carries information such as the selected H-UPF, the IP address allocated to the UE and the like.

12A, H-SMF initiates an N4 session procedure to the selected H-UPF through signaling N4 Session Establishment Request, which carries the tag information.

12B, the H-UPF returns an N4 session establishment result to the H-SMF through signaling N4 Session Establishment Reponse, and responds to whether tag data is received.

13. The H-SMF returns an establish session Response result to the V-SMF by sending Nsmf _ PDUSession _Create Response signaling while including a plurality of QoS rules associated with QoS, at which time the H-UPF to V-UPF user data plane is established

14. The V-SMF sends an N1N2 interface Communication message transfer message (Namf _communication_n1n2MESSAGETRANSFER message) to the AMF, after which the AMF returns a Namf _communication_n1n2MESSAGETRANSFER response message to the SMF

15. The AMF sends an N2 PDU session request message to the gNB, wherein the message contains media plane tunnel endpoint information of the UPF side.

16. And establishing user plane connection between the base station and the UE.

17. The gNB replies an N2 PDU session response message (N2 PDU Session Response message) to the AMF, carrying the downlink media plane tunnel endpoint information, and the establishment of the uplink data channel is completed at this time.

18. The AMF sends a PDU session context update request (Nsmf _ PDUSession _ UpdateSMContext Request) message to the V-SMF, carrying the media plane tunnel endpoint information on the base station side.

19A, V-SMF initiates an N4 session modification request (N4 Session Modification Request) message to V-UPF, carrying downstream media plane tunnel information.

19B, V-UPF sends an N4 session modification response (N4 Session Modification Response) message to V-SMF.

The UPF already knows the tunnel endpoint information at the base station side, and the downlink data channel establishment is completed.

20. The V-SMF sends a PDU session context update response (Nsmf _ PDUSession _ UpdateSMContext Response) message to the AMF.

21. The V-SMF sends a status notification (Nsmf _ PDUSession _ SMContextNotify) message of the PDU session SM context to the AMF indicating that the session setup is complete.

22. If the UE requests to establish PDU Session of IPv6 type, H-SMF also needs to issue IPv6 route announcement to the UE through N4 port and H-UPF, V-UPF.

23. If the V-SMF receives AN indication that the (R) AN refuses some QFI in step 18 or the V-SMF refuses some QFI in step 13, the V-SMF notifies the H-SMF by a Nsmf _ PDUSession _update request. The H-SMF is responsible for updating the parameters of QoS rules and QoS flow levels associated with QoS rules in the UE, if needed.

V-SMF informs H-SMF Update via Nsmf _ PDUSession _update Request

24. If the session establishment fails after step 7, the H-SMF needs to initiate the flow of de-registration and de-subscription to the UDM.

In the method of the embodiment of the application, in the PDU session establishment process, the SMF acquires the label information of the terminal from the UDM and sends the label information to the UPF through the N4 session establishment message, the UPF performs the labeling work after the user data surface path is established, the UPF can execute the corresponding action on the PDU session according to the label information of the terminal, the one-to-one correspondence between the label information and the corresponding action is recorded in the operation strategy, and the operation strategy is issued by the SMF. The UPF can classify the terminal and/or the service in finer granularity according to the label information, and further can finely manage the user traffic.

As shown in fig. 8, an embodiment of the present application further provides an information transmission apparatus, including a memory 820, a transceiver 800, and a processor 810;

a memory 820 for storing a computer program; a transceiver 800 for transceiving data under the control of the processor 810; a processor 810 for reading the computer program in the memory and performing the following operations:

Optionally, the processor 810 also implements the following steps when executing the program:

Or obtaining a second PDU session establishment request sent by the signed SMF.

acquiring operation strategy information through a transceiver, wherein the operation strategy information comprises the corresponding relation between label information of a terminal and UPF operation; and sending the operation strategy information to the UPF.

Wherein in fig. 8, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 810 and various circuits of memory represented by memory 820, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. Transceiver 800 may be a number of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium, including wireless channels, wired channels, optical cables, etc. The processor 810 is responsible for managing the bus architecture and general processing, and the memory 820 may store data used by the processor 810 in performing operations.

The processor 810 may be a Central Processing Unit (CPU), application SPECIFIC INTEGRATED Circuit (ASIC), field-Programmable gate array (Field-Programmable GATE ARRAY, FPGA), or complex Programmable logic device (Complex Programmable Logic Device, CPLD), or may employ a multi-core architecture.

It should be noted that, the above device provided in this embodiment of the present application can implement all the method steps implemented in the above embodiment of the information transmission method, and can achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those in the embodiment of the method are omitted herein.

As shown in fig. 9, an embodiment of the present application further provides an information processing apparatus 900, including a memory 920, a transceiver 900, and a processor 910;

A memory 920 for storing a computer program; a transceiver 900 for transceiving data under the control of the processor 910; a processor 910 for reading the computer program in the memory and performing the following operations:

Optionally, the processor 910 further implements the following steps when executing the program:

And acquiring operation strategy information sent by the SMF through a transceiver, wherein the operation strategy information comprises the corresponding relation between label information of the terminal and UPF operation.

Wherein in fig. 9, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 910 and various circuits of memory represented by memory 920, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. Transceiver 900 may be a number of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium, including wireless channels, wired channels, optical cables, etc. The processor 910 is responsible for managing the bus architecture and general processing, and the memory 920 may store data used by the processor 910 in performing operations.

The processor 910 may be a Central Processing Unit (CPU), an Application SPECIFIC INTEGRATED Circuit (ASIC), a Field-Programmable gate array (Field-Programmable GATE ARRAY, FPGA), or a complex Programmable logic device (Complex Programmable Logic Device, CPLD), or the processor may employ a multi-core architecture.

It should be noted that, the above device provided in this embodiment of the present application can implement all the method steps implemented in the above information processing method embodiment, and can achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those in the method embodiment in this embodiment are omitted.

As shown in fig. 10, an embodiment of the present application further provides an information transmission apparatus, including:

A first obtaining unit 1001, configured to obtain tag information of a terminal, where the tag information includes at least one of a first tag and a second tag, the first tag is used to indicate service scenario and communication feature information corresponding to a service of the terminal, and the second tag is used to indicate encryption protection information corresponding to access information of the terminal;

A first sending unit 1002, configured to send label information of the terminal to a user plane function UPF.

Optionally, the first obtaining unit is configured to obtain tag information of a terminal sent by the unified data management UDM.

Optionally, the device of the embodiment of the present application further includes:

a third acquiring unit, configured to acquire a first PDU session establishment request sent by an access and mobility management function AMF before the first acquiring unit acquires tag information of the terminal; or obtaining a second PDU session establishment request sent by the signed SMF.

Optionally, the first sending unit is configured to send the label information to a UPF through an N4 session establishment request.

and a fourth obtaining unit, configured to obtain an N4 session establishment response sent by the UPF, where the N4 session establishment response is used to instruct the UPF to receive the tag information.

a fifth obtaining unit, configured to obtain operation policy information, where the operation policy information includes a correspondence between tag information of a terminal and UPF operation;

and the second sending unit is used for sending the operation strategy information to the UPF.

As shown in fig. 11, an embodiment of the present application further provides an information processing apparatus, including:

A second obtaining unit 1101, configured to obtain tag information of a terminal sent by a session management function SMF, where the tag information includes at least one of a first tag and a second tag, where the first tag is used to indicate service scenario and communication feature information corresponding to a service of the terminal, the second tag is used to indicate encryption protection information corresponding to access information of the terminal, and the tag information corresponds to a packet data unit PDU session identifier one to one;

And the processing unit 1102 is configured to execute a UPF operation corresponding to the label information on a data packet corresponding to the PDU session identifier when the data packet is detected.

and a sixth obtaining unit, configured to obtain operation policy information sent by the SMF, where the operation policy information includes a correspondence between tag information of the terminal and UPF operation.

It should be noted that, in the embodiment of the present application, the division of the units is schematic, which is merely a logic function division, and other division manners may be implemented in actual practice. In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a processor-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

In some embodiments of the present application, there is also provided a processor-readable storage medium storing program instructions for causing the processor to perform the steps of:

Acquiring tag information of a terminal, wherein the tag information comprises at least one of a first tag and a second tag, the first tag is used for indicating service scenes and communication characteristic information corresponding to services of the terminal, and the second tag is used for indicating encryption protection information corresponding to access information of the terminal; and sending the label information of the terminal to a user plane function UPF.

Or acquiring label information of a terminal sent by a session management function SMF, wherein the label information comprises at least one of a first label and a second label, the first label is used for indicating service scene and communication characteristic information corresponding to the service of the terminal, the second label is used for indicating encryption protection information corresponding to access information of the terminal, and the label information corresponds to a packet data unit PDU session identifier one by one; and under the condition that the data packet corresponding to the PDU session identifier is detected, executing the UPF operation corresponding to the label information on the data packet.

The terminal device according to the embodiment of the present application may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem, etc. The names of the terminal devices may also be different in different systems, for example in a 5G system, the terminal devices may be referred to as User Equipment (UE). The wireless terminal device may communicate with one or more Core Networks (CNs) via a radio access Network (Radio Access Network, RAN), which may be mobile terminal devices such as mobile phones (or "cellular" phones) and computers with mobile terminal devices, e.g., portable, pocket, hand-held, computer-built-in or vehicle-mounted mobile devices that exchange voice and/or data with the radio access Network. Such as Personal communication services (Personal Communication Service, PCS) phones, cordless phones, session initiation protocol (Session Initiated Protocol, SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital assistants (Personal DIGITAL ASSISTANT, PDA) and the like. The wireless terminal device may also be referred to as a system, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile station), remote station (remote station), access point (access point), remote terminal device (remote terminal), access terminal device (ACCESS TERMINAL), user terminal device (user terminal), user agent (user agent), user equipment (user device), and embodiments of the present application are not limited.

The network device according to the embodiment of the present application may be a base station, where the base station may include a plurality of cells for providing services for the terminal. A base station may also be called an access point or may be a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or other names, depending on the particular application. The network device may be configured to exchange received air frames with internet protocol (Internet Protocol, IP) packets as a router between the wireless terminal device and the rest of the access network, which may include an Internet Protocol (IP) communication network. The network device may also coordinate attribute management for the air interface. For example, the network device according to the embodiment of the present application may be a network device (Base Transceiver Station, BTS) in a global system for mobile communications (Global System for Mobile communications, GSM) or code division multiple access (Code Division Multiple Access, CDMA), a network device (NodeB) in a wideband code division multiple access (Wide-band Code Division Multiple Access, WCDMA), an evolved network device (evolutional Node B, eNB or e-NodeB) in a long term evolution (Long Term Evolution, LTE) system, a 5G base station (gNB) in a 5G network architecture (next generation system), a home evolved base station (Home evolved Node B, heNB), a relay node (relay node), a home base station (femto), a pico base station (pico), etc., which are not limited in the embodiment of the present application. In some network structures, the network device may include a Centralized Unit (CU) node and a Distributed Unit (DU) node, which may also be geographically separated.

Multiple-input Multiple-output (Multi Input Multi Output, MIMO) transmissions may be made between the network device and the terminal device, each using one or more antennas, and the MIMO transmissions may be Single User MIMO (SU-MIMO) or Multiple User MIMO (MU-MIMO). The MIMO transmission may be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, or may be diversity transmission, precoding transmission, beamforming transmission, or the like, depending on the form and number of the root antenna combinations.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. An information transmission method, comprising:

2. The method of claim 1, wherein the first tag comprises a service scenario identifier and a service class identifier corresponding to a service of the terminal, wherein different service class identifiers correspond to different communication characteristic information.

3. A method according to claim 1 or 2, wherein the second tag comprises a security level identification of the terminal;

4. The method according to claim 1, wherein the session management function SMF obtains tag information of a terminal, comprising:

5. The method according to claim 1, characterized in that before the session management function SMF obtains the tag information of the terminal, the method further comprises:

6. The method of claim 1, wherein the SMF sends the tag information of the terminal to a user plane function UPF, comprising:

7. The method as recited in claim 6, further comprising:

8. The method of claim 1, wherein the UPF is an anchor UPF or a non-anchor UPF, wherein the anchor UPF is a UPF directly connected to a DN of a data network, and wherein the non-anchor UPF is a UPF not directly connected to the DN.

9. The method as recited in claim 1, further comprising:

And sending the operation strategy information to the UPF.

10. An information processing method, characterized by comprising:

11. The method of claim 10, wherein the first tag comprises a service scenario identifier and a service class identifier corresponding to a service of the terminal, wherein different service class identifiers correspond to different communication characteristic information.

12. The method according to claim 10 or 11, wherein the second tag comprises a security level identification of the terminal;

13. The method as recited in claim 10, further comprising:

14. An information transmission device is characterized by comprising a memory, a transceiver and a processor;

15. The apparatus of claim 14, wherein the first tag comprises a traffic scenario identification and a traffic class identification corresponding to traffic of the terminal, wherein different traffic class identifications correspond to different communication characteristic information.

16. The apparatus according to claim 14 or 15, wherein the second tag comprises a security level identification of the terminal;

17. The apparatus of claim 14, wherein the processor when executing the program further performs the steps of:

18. The apparatus of claim 14, wherein the processor when executing the program further performs the steps of:

Or obtaining a second PDU session establishment request sent by the signed SMF.

19. The apparatus of claim 14, wherein the processor when executing the program further performs the steps of:

20. The apparatus of claim 19, wherein the processor when executing the program further performs the steps of:

21. An information processing apparatus, comprising a memory, a transceiver, and a processor;

22. The apparatus of claim 21, wherein the first tag comprises a service context identifier and a service class identifier corresponding to a service of the terminal, wherein different service class identifiers correspond to different communication characteristic information.

23. The apparatus according to claim 21 or 22, wherein the second tag comprises a security level identification of the terminal;

24. An information transmission apparatus, comprising:

25. An information processing apparatus, characterized by comprising:

26. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing the processor to execute the steps of the information transmission method according to any one of claims 1 to 9 or the steps of the information processing method according to any one of claims 10 to 13.