Information indication method and apparatus, communication device, and storage medium

Abstract

The embodiments of the present disclosure provide an information indication method and device, a communication device and a storage medium. The information indication method comprises: determining, by a fourth network device, a PDU set information (PSI) related to an independent PDU based on first information, so that the fourth network device or other network devices can determine the processing related to the independent PDU based on the PDU set information, thereby improving the reliability of the processing associated with the PDU.

Description

[0001] This application claims priority to the patent application with application number PCT / CN2023 / 093707, application date May 11, 2023, entitled "Information indication method, apparatus, communication device and storage medium". Technical Field

[0002] This disclosure relates to, but is not limited to, the field of wireless communication technology, and particularly to an information indication method, apparatus, communication device, and storage medium. Background Technology

[0003] With the development of wireless networks, wireless communication systems adopt Quality of Service (QoS) mechanisms. Extended Reality and Media (XRM) services and interactive media services require comprehensive consideration of the QoS characteristics of the relevant data streams. In one application scenario, enhanced functionality supports processing of each Protocol Data Unit (PDU) set in the XRM service data stream to support enhanced QoS awareness and assurance, as well as enhanced Quality of Experience (QoE) for the XRM service data stream. However, for some PDUs, insufficient information leads to uncertainty in the processing related to these PDUs, making it impossible to provide the required QoS guarantees and user QoE for the relevant data streams. Summary of the Invention

[0004] This disclosure presents an information indication method, apparatus, communication device, and storage medium.

[0005] According to a first aspect of the present disclosure, an information indication method is provided, wherein the method is performed by a first network device, and the method includes: sending first information to a second network device or a fourth network device;

[0006] The first information is used to indicate the PDU set importance (PSI) associated with an independent packet data unit (PDU), wherein the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set.

[0007] According to a second aspect of the present disclosure, an information indication method is provided, wherein the method is performed by a second network device, the method comprising:

[0008] Receive the first information sent by the first network device;

[0009] The first information is used to indicate the PSI associated with the Independent Packet Data Unit (PDU), wherein the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set.

[0010] According to a third aspect of the present disclosure, an information indication method is provided, wherein the method is performed by a third network device, the method comprising:

[0011] Receive the first information sent by the second network device;

[0012] The first information is used to indicate the PSI associated with the Independent Packet Data Unit (PDU), wherein the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set.

[0013] According to a fourth aspect of the present disclosure, an information indication method is provided, wherein the method is performed by a fourth network device, the method comprising:

[0014] Receive first information sent by a first network device or a third network device;

[0015] The first information is used to indicate the PSI associated with the Independent Packet Data Unit (PDU), wherein the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set.

[0016] According to a fifth aspect of the present disclosure, a system is provided, comprising: a first network device, a second network device, a third network device, and a fourth network device; wherein the first network device performs any of the methods described in the first network device; the second network device performs any of the methods described in the second network device; the third network device performs any of the methods described in the third network device; and the fourth network device performs any of the methods described in the fourth network device.

[0017] According to a sixth aspect of the present disclosure, an information indicating device is provided, wherein the device includes:

[0018] The sending module is configured to send first information to a second network device or a fourth network device;

[0019] The first information is used to indicate the PSI associated with the Independent Packet Data Unit (PDU), wherein the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set.

[0020] According to a seventh aspect of the present disclosure, an information indicating device is provided, wherein the device includes:

[0021] The receiving module is configured to receive first information sent by the first network device;

[0022] The first information is used to indicate the PSI associated with the Independent Packet Data Unit (PDU), wherein the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set.

[0023] According to an eighth aspect of the present disclosure, an information indicating device is provided, wherein the device includes:

[0024] The receiving module is configured to receive first information sent by the second network device;

[0025] The first information is used to indicate the PSI associated with the Independent Packet Data Unit (PDU), wherein the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set.

[0026] According to a ninth aspect of the present disclosure, an information indicating device is provided, wherein the device includes:

[0027] The receiving module is configured to receive first information sent by a first network device or a third network device;

[0028] The first information is used to indicate the PSI associated with the Independent Packet Data Unit (PDU), wherein the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set.

[0029] According to the tenth aspect of the embodiments of this disclosure, a

[0030] According to the eleventh aspect of this disclosure, a communication device is provided, the communication device comprising:

[0031] processor;

[0032] Memory used to store the processor's executable instructions;

[0033] The processor is configured to implement the method described in any embodiment of this disclosure when running the executable instructions.

[0034] According to the twelfth page of the present disclosure, a computer storage medium is provided, the computer storage medium storing a computer executable program, which, when executed by a processor, implements the methods described in any embodiment of the present disclosure.

[0035] In this embodiment of the disclosure, the first information is used to indicate the PDU set importance score (PSI) associated with an Independent Packet Data Unit (PDU), wherein the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set. Here, since the first network device sends the first information indicating the PDU set importance score (PSI) associated with the independent PDU to the second or fourth network device, upon receiving the first information, the second or fourth network device can determine the PDU set information corresponding to the independent PDU based on the first information. Compared to the case where the PDU set information cannot be determined, the processing related to the independent PDU can be determined based on the PDU set information. This improves the reliability of the processing associated with the PDU and provides the required QoS guarantees and user QoE for the relevant data streams. Attached Figure Description

[0036] Figure 1 This is a schematic diagram illustrating the structure of a wireless communication system according to an exemplary embodiment.

[0037] Figure 2 This is a flowchart illustrating an information indication method according to an exemplary embodiment.

[0038] Figure 3 This is a flowchart illustrating an information indication method according to an exemplary embodiment.

[0039] Figure 4 This is a flowchart illustrating an information indication method according to an exemplary embodiment.

[0040] Figure 5 This is a flowchart illustrating an information indication method according to an exemplary embodiment.

[0041] Figure 6 This is a flowchart illustrating an information indication method according to an exemplary embodiment.

[0042] Figure 7 This is a flowchart illustrating an information indication method according to an exemplary embodiment.

[0043] Figure 8 This is a flowchart illustrating an information indication method according to an exemplary embodiment.

[0044] Figure 9 This is a flowchart illustrating an information indication method according to an exemplary embodiment.

[0045] Figure 10This is a flowchart illustrating an information indication method according to an exemplary embodiment.

[0046] Figure 11 This is a flowchart illustrating an information indication method according to an exemplary embodiment.

[0047] Figure 12 This is a flowchart illustrating an information indication method according to an exemplary embodiment.

[0048] Figure 13 This is a flowchart illustrating an information indication method according to an exemplary embodiment.

[0049] Figure 14 This is a flowchart illustrating an information indication method according to an exemplary embodiment.

[0050] Figure 15 This is a flowchart illustrating an information indication method according to an exemplary embodiment.

[0051] Figure 16 This is a flowchart illustrating an information indication method according to an exemplary embodiment.

[0052] Figure 17 This is a flowchart illustrating an information indication method according to an exemplary embodiment.

[0053] Figure 18A This is a flowchart illustrating an information indication method according to an exemplary embodiment.

[0054] Figure 18B This is a flowchart illustrating an information indication method according to an exemplary embodiment.

[0055] Figure 19 This is a schematic diagram illustrating an information indication system according to an exemplary embodiment.

[0056] Figure 20 This is a schematic diagram illustrating an information indicating device according to an exemplary embodiment.

[0057] Figure 21 This is a schematic diagram illustrating an information indicating device according to an exemplary embodiment.

[0058] Figure 22 This is a schematic diagram illustrating an information indicating device according to an exemplary embodiment.

[0059] Figure 23 This is a schematic diagram illustrating an information indicating device according to an exemplary embodiment.

[0060] Figure 24This is a schematic diagram of the structure of a terminal according to an exemplary embodiment.

[0061] Figure 25 This is a block diagram illustrating a base station according to an exemplary embodiment. Detailed Implementation

[0062] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with those of this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the embodiments of this disclosure as detailed in the appended claims.

[0063] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. The singular forms “a” and “the” as used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0064] It should be understood that although the terms first, second, third, etc., may be used to describe various information in embodiments of this disclosure, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, first information may also be referred to as second information without departing from the scope of embodiments of this disclosure, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to a determination."

[0065] For the sake of brevity and ease of understanding, the terms “greater than” or “less than” are used in this document to characterize size relationships. However, it will be understood by those skilled in the art that the term “greater than” also includes the meaning of “greater than or equal to”, and “less than” also includes the meaning of “less than or equal to”.

[0066] Please refer to Figure 1 This illustration shows a schematic diagram of the structure of a wireless communication system provided in an embodiment of this disclosure. Figure 1 As shown, the wireless communication system is a communication system based on mobile communication technology. The wireless communication system may include: a number of user equipment 110 (or terminal equipment 110, terminal 110) and a number of base stations 120 (or access network equipment 120).

[0067] User equipment 110 can be a device that provides voice and / or data connectivity to a user. User equipment 110 can communicate with one or more core networks via a Radio Access Network (RAN). User equipment 110 can be an Internet of Things (IoT) user equipment, such as sensor devices, mobile phones, and computers with IoT user equipment capabilities. For example, it can be a fixed, portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted device. Examples include a station (STA), subscriber unit, subscriber station, mobile station, mobile station, remote station, access point, remote terminal, access terminal, user terminal, user agent, user device, or user equipment. Alternatively, user equipment 110 can also be a device from an unmanned aerial vehicle (UAV). Alternatively, user equipment 110 can also be a vehicle-mounted device, such as a vehicle computer with wireless communication capabilities, or a wireless user equipment connected to an external vehicle computer. Alternatively, user equipment 110 can also be a roadside device, such as a street light, traffic light, or other roadside device with wireless communication capabilities.

[0068] Base station 120 can be a network-side device in a wireless communication system. This wireless communication system can be a fourth-generation mobile communication (4G) system, also known as a Long Term Evolution (LTE) system; or it can be a 5G system, also known as a New Radio (NR) system; or it can be the next generation after 5G. In this case, the access network in the 5G system can be called NG-RAN (New Generation-Radio Access Network).

[0069] The base station 120 can be an evolved NB (eNB) used in a 4G system. Alternatively, the base station 120 can also be a gNB (gNB) using a centralized-distributed architecture in a 5G system. When the base station 120 adopts a centralized-distributed architecture, it typically includes a central unit (CU) and at least two distributed units (DUs). The central unit is equipped with a protocol stack of the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (RLC) layer, and the Media Access Control (MAC) layer; the distributed units are equipped with a physical (PHY) layer protocol stack. This disclosure does not limit the specific implementation of the base station 120.

[0070] Base station 120 and user equipment 110 can establish a wireless connection via a wireless air interface. In different implementations, the wireless air interface is a wireless air interface based on the fourth-generation mobile communication network technology (4G) standard; or, the wireless air interface is a wireless air interface based on the fifth-generation mobile communication network technology (5G) standard, such as a new air interface; or, the wireless air interface can also be a wireless air interface based on a next-generation mobile communication network technology standard based on 5G.

[0071] In some embodiments, user equipment 110 can also establish E2E (End to End) connections. Examples include V2V (vehicle to vehicle), V2I (vehicle to Infrastructure), and V2P (vehicle to pedestrian) communication scenarios in vehicle-to-everything (V2X) communication.

[0072] Here, the user equipment mentioned above can be considered as the terminal equipment in the following embodiments.

[0073] In some embodiments, the wireless communication system described above may further include a network management device 130.

[0074] Several base stations 120 are connected to a network management device 130. The network management device 130 may include functions such as Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Policy Control Function (PCF), and Network Repository Function (NRF). The implementation of the network management device 130 is not limited in this embodiment.

[0075] For example, in this disclosure, the first network device can be a first network function, which is an application function (AF); the second network device can be a second network function, which can be a policy control function (PCF); the third network device can be a third network function, which can be a session management function (SMF); and the fourth network device can be a fourth network function, which can be a user plane function (UPF). Of course, the network functions can also be other evolved network functions, and this is not limited thereto.

[0076] Here, the terminal involved in this disclosure may be, but is not limited to, a mobile phone, wearable device, vehicle terminal, roadside unit (RSU), smart home terminal, industrial sensing device and / or medical device, etc. In some embodiments, the terminal may be a Redcap terminal or a predetermined version of a New Radio (NR) terminal (e.g., an R17 NR terminal).

[0077] The access network equipment involved in this disclosure can be a base station, which can be of various types, such as a base station for a third-generation mobile communication (3G) network, a base station for a fourth-generation mobile communication (4G) network, a base station for a fifth-generation mobile communication (5G) network, or other evolved base stations.

[0078] To facilitate understanding by those skilled in the art, this disclosure provides multiple embodiments to clearly illustrate the technical solutions of the embodiments of this disclosure. Of course, those skilled in the art will understand that the multiple embodiments provided in this disclosure can be executed individually, or in combination with the methods of other embodiments in this disclosure, or individually or in combination with some methods in other related technologies; this disclosure does not limit these aspects.

[0079] To better understand the technical solutions described in any embodiment of this disclosure, the application scenarios in the related technologies are first explained:

[0080] Mobile media services, extended reality (XR) services such as cloud augmented reality (AR) or virtual reality (VR), cloud gaming, and video-based remote control of machines or drones are expected to contribute increasingly higher traffic to 5G networks.

[0081] In addition to audio and video streams, XR services also involve multimodal data streams, such as bio-tactile sensing data streams. This multimodal data describes data input from the same or different devices (including sensors) for the same service or application, and this data may be output to one or more destination device terminals. The various data streams within multimodal data often exhibit some degree of correlation, even strong correlation, such as the synchronization of audio and video streams, or the synchronization of tactile and visual senses. These media service data streams themselves, the relationships between different data streams, and the network transmission requirements of these service data streams all share some common characteristics. Effective identification and utilization of these characteristics will greatly contribute to network and service transmission and control, as well as to service assurance and user experience.

[0082] Extended Reality and Media (XRM) and interactive media services require 5GS systems to comprehensively consider the Quality of Service (QoS) characteristics of relevant data streams. This includes ensuring that parameters such as delay-critical guaranteed bit rate (GBR), guaranteed flow bit rate (GFBR), packet delay budget (PDB), and default maximum data burst volume (MDBV) can be simultaneously and consistently met. This involves ensuring consistent QoS authorization and execution across multiple XRM data streams from a single UE and across multiple UEs.

[0083] In one embodiment, the current 5G system supports enhanced functionality of the AF (Automatic Focusing Engine) for processing each PDU set of XRM service data streams. This enhances the AF's QoS awareness and guarantee capabilities for XRM service data streams, as well as user QoE enhancement. This includes the AF providing PDU set-specific QoS characteristics and protocol descriptions: PDU Set Delay Budget (PSDB); PDU Set Error Rate (PSER); and PDU Set Integrated Handling Information (PSIHI).

[0084] In one embodiment, the Session Management Function (SMF) and User Plane Function (UPF) can combine the protocol description and header extensions provided by the Application Function (AF) to perform GTP-U header extensions on the corresponding PDUs in the corresponding SDF PDU set. The extended PDU carries PDU set information. NG-RAN uses the PDU set information for QoS processing based on the PDU set. The PDU set information includes at least one of the following: PDU set sequence number, an indication of the end PDU of the PDU set (or, the last PDU in the PDU set after sorting), PDU sequence number in the PDU set, PDU set size (in bytes), and PDU set importance, whereby the PDU set importance identifies the relative importance of a PDU set to other PDU sets in the QoS flow.

[0085] In one embodiment, the UPF performs the mapping from AF SDF service data flow to QoS flow based on PDR rules; and encapsulates the associated PDUs into a PDU set; and executes relevant QoS policies such as PSER and PSDB on the PDU sets within the QoS flow. However, 5GS lacks a solution for handling PDUs that are not classified as media groups in the application service data flow (SDF), leading to potential conflicts between the QoS profile and parameter execution policies of the QoS flow, and failing to guarantee the QoS of the QoS flow.

[0086] In one embodiment, the UPF maps the application stream to a QoS stream based on packet detection information in the PDR. Some PDUs in the QoS stream will be associated with media components (e.g., I-frames and P-frames), and these PDUs will be classified by the UPF into a certain PDU set. Appropriate processing, such as packet loss handling, can be performed on the classified PDUs and / or the corresponding PDU sets. However, it is unclear how to handle PDUs that do not contain identifiable user media components. In particular, it is unclear how to label the PDU set information for these PDUs without header extensions. For example, when the RAN receives a PDU that does not contain identifiable user media components, it cannot explicitly determine how to handle the PDU when performing packet loss handling.

[0087] like Figure 2 As shown, this embodiment provides an information indication method, wherein the method is executed by a first network device, and the method includes:

[0088] Step 21: Send the first information to the second or fourth network device;

[0089] The first information is used to indicate the PDU set importance (PSI) associated with an independent PDU. An independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set.

[0090] In one embodiment, an independent PDU is identified or determined; a PSI associated with the independent PDU is generated. First information is sent to a second or fourth network device, wherein the first information is used to indicate the PSI associated with the independent PDU, and the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set.

[0091] In one embodiment, the first network device can generate a PSI for a non-independent PDU (which may be a PDU other than an independent PDU), for example, a first type PSI, and the second network device can generate a PSI for an independent PDU, for example, a second type PSI. The first type PSI can be distinguished from the second type PSI; for example, the first type PSI is a PSI of a first format, and the second type PSI is a PSI of a second format. In this way, the network device receiving the first information can determine whether the PSI is a PSI for a non-independent PDU or a PSI for an independent PDU based on the type of the PSI.

[0092] In this disclosure, PDU can also be a Packet Data Unit, that is, in some scenarios, "packet data unit" and "protocol data unit" in this disclosure can be used interchangeably.

[0093] In one embodiment, PSI is used to indicate the relative importance of a PDU set relative to other PDU sets in a QoS flow. Different PSI values ​​can be set based on the importance of PDU sets associated with individual PDUs, and the first information can directly indicate the PSI value associated with an individual PDU.

[0094] Independent PDUs do not carry a PDU set extension header, so they cannot be classified into a PDU set by the RAN. When processing PDU sets (e.g., discarding), the RAN cannot definitively determine whether to perform the corresponding processing operation on the independent PDU. Furthermore, even if a PDU carries a PDU set extension header, if the PDU cannot be mapped to a PDU set due to missing specific information, the RAN may also be unable to definitively determine whether to perform the corresponding processing operation when processing the PDU set (e.g., discarding).

[0095] In one embodiment, the set of PDUs associated with an individual PDU is a set of PDUs encapsulated based on the individual PDU.

[0096] In one embodiment, first information is sent to a second or fourth network device; wherein the first information is used to indicate the PSI associated with the independent PDU; the first information is used to determine the PDU set information corresponding to the independent PDU to be sent to the fifth network device. Exemplarily, the first information is used to determine the PDU set information corresponding to the independent PDU in the GTP-U header of the General Packet Radio Service Tunneling Protocol user plane to be sent to the fifth network device. Exemplarily, the fifth network device may be a RAN device.

[0097] In one embodiment, a first network device (or a first network device sending first information to a second network device via a Network Exposure Function (NEF))

[0098] In one embodiment, a first network device sends a Real-time Transport Protocol (RTP) Service Data Flow (SDF) and / or an associated Real-time Control Protocol (RTCP) Service Data Flow (SDF) of an independent PDU to a second network device, wherein the RTCP SDF and / or RTP SDF carry first information. The first information is used to indicate the PSI associated with the independent packet data unit (PDU), where the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set; the first information is also used to determine the PDU set information corresponding to the independent PDU to be sent to the RAN.

[0099] In one embodiment, during the session establishment request process executed by the first network device, first information is sent to the second network device. The first information is used to indicate the PSI associated with the independent PDU, wherein the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set. The first information is used to determine the PDU set information corresponding to the independent PDU sent to the fifth network device.

[0100] In one embodiment, during the application session update request process executed by the first network device, first information is sent to the second network device. The first information is used to indicate the PSI associated with the independent PDU, wherein the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set. The first information is used to determine the PDU set information corresponding to the independent PDU sent to the fifth network device.

[0101] In one embodiment, during the execution of a QoS processing flow based on a PDU set, first information is sent to a second network device, wherein the first information is used to indicate the PSI associated with an independent PDU, and the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set; the first information is used to determine the PDU set information corresponding to the independent PDU to be sent to the RAN.

[0102] In this embodiment of the disclosure, the importance of the PDU set of the second network device and the fourth network device is determined by the first network device sending first information to the second or fourth network device to indicate the importance of the PDU set associated with the independent packet data unit (PDU). After receiving the first information, the second or fourth network device can determine the PDU set information (which includes PSI information) corresponding to the independent PDU. Compared to the case where the PDU set information cannot be determined, the processing related to the independent PDU can be determined based on the PDU set information. This can improve the reliability of the processing associated with the PDU and provide the required QoS guarantee and user QoE for the relevant data stream.

[0103] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods in the embodiments of this disclosure or some methods in related technologies.

[0104] like Figure 3 As shown, this embodiment provides an information indication method, wherein the method is executed by a first network device, and the method includes:

[0105] Step 31: During the session establishment request process executed by the first network device, send the first information to the second network device;

[0106] The first information is used to indicate the PSI associated with the Independent Packet Data Unit (PDU), where the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set.

[0107] In one embodiment, the first network device can determine the PSI of an individual PDU based on the importance of the PDU service.

[0108] In one embodiment, the first network device can customize or determine the PSI of an individual PDU based on user instructions.

[0109] In one embodiment, during the session establishment request process executed by the first network device, first information is sent to the second network device; wherein, the first information is used to indicate the PSI associated with the independent packet data unit (PDU), and the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set; the first information is used to determine the PDU set information corresponding to the independent PDU sent to the RAN.

[0110] To better understand the embodiments of this disclosure, the following exemplary embodiment will be used to further illustrate the technical solution of this disclosure:

[0111] Example 1:

[0112] Please see Figure 4 A method for indicating information is provided, the method comprising:

[0113] Step 401: The AF sends an AF session resource request, for example, by creating an AF request message using Nnef_AFsessionWithQoS_Createrequest. The AF carries the QoS requirements for XRM services and interactive media service data streams in the AF request message. The AF sends first information to the 5G core network (which can be NEF or PCF). The first information indicates the PSI associated with the Independent Packet Data Unit (PDU), where the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set. The first information also determines the PDU set information corresponding to the independent PDU to be sent to the RAN. The AF can send the first information to the NEF or PCF during the AF session establishment request.

[0114] In one embodiment, the AF request message may further include at least one of the following: XRM service information, a data stream or data stream group identifying the XRM service (e.g., a multimodal service identifier), a terminal address, a terminal identifier, an AF authentication application identifier, a data stream description, a data network name (DNN), single network slice selection auxiliary information (S-NSSAI), and QoS parameters. Here, the multimodal service identifier can be used to identify all data streams in the XRM service group.

[0115] Step 402: NEF authenticates the AF request message. If the authentication result indicates that the AF is a trusted AF, the NEF sends an AF request message to the PCF. In one embodiment, the NEF performs relevant mappings, including mapping the XRM service (AF-Service-Identifier) ​​to the DNN and S-NSSAI, mapping the external application to the CN application identifier; and mapping the external UE identifier to the CN UE identifier (such as SUPI) based on UDM subscription information, as well as mapping the external to internal XRM service group identifier based on UDM subscription information.

[0116] Step 403: The NEF authorizes the AF request and determines whether to invoke the TSCTSF or directly contact the PCF based on the parameters provided by the AF. The PCF receives the attributes provided by the AF from either the NEF or the TSCTSF. The NEF triggers Npcf_PolicyAuthorization_Createrequest, sending the AF request message to the PCF, carrying QoS requirement information for the PCF's policy decision. The message carries the first information of the corresponding service data stream.

[0117] Step 404: The PCF determines policy information. The PCF can determine whether updated or new policy information needs to be sent to the SMF. The PCF considers the PSI indication provided by the AF to determine the Policy and Charging Control (PCC) rules. The PCF sends the first information received from the AF or NEF to the SMF according to the PCC rules.

[0118] Step 405: PCF sends an Npcf_Policy Authorization_Create response to NEF.

[0119] Step 406: NEF sends an Nnef_AFsessionWithQoS_Create response message to AF. The response message carries the result, informing AF whether the request message has been authorized.

[0120] Step 407: The PCF initiates an SM policy association modification request (PCC rule (burst time)) to the SMF. After receiving the PCC rule, the SMF forwards the first information to the UPF.

[0121] Step 408: SMF replies the SM policy association modification response to PCF.

[0122] Step 409: SMF initiates an N4 session modification request to UPF (carrying the first information).

[0123] Step 410: UPF responds to SMF.

[0124] Step 411: For modifications to the SMF request, the SMF calls Namf_Communication_N1N2MessageTransfer([N2 SM information](PDU session ID, QFI, QoS profile), N1 SM container)).

[0125] Step 412: AMF can send N2 ([N2 SM information received from SMF], NAS message (PDU session ID, N1 SM container (PDU session modification command))) message to (R)AN.

[0126] Step 413, Resource Setup (Optional).

[0127] Step 414: (R)AN can confirm the N2 PDU session request by sending an N2 PDU session Ack message to the AMF.

[0128] Step 415: The AMF forwards the N2 SM information received from the AN to the SMF through the Nsmf_PDUSession_UpdateSMContext service operation.

[0129] Step 416: SMF responds with the Nsmf_PDUSession_UpdateSMContext response.

[0130] Step 417: The SMF can update the N4 session of the UPF involved in the PDU session modification by sending an N4 session modification request message to the UPF.

[0131] Step 418: The UPF identifies independent PDUs (independent PDUs are PDUs that do not carry a PDU set extension header or cannot be mapped to a predetermined PDU set), and based on the first information, determines the PDU set information (especially PSI) that it sends to the NG-RAN in the GTP-U header.

[0132] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods in the embodiments of this disclosure or some methods in related technologies.

[0133] like Figure 5 As shown, this embodiment provides an information indication method, wherein the method is executed by a first network device, and the method includes:

[0134] Step 51: During the application session update request process executed by the first network device, the first information is sent to the second network device;

[0135] The first information is used to indicate the PSI associated with the Independent Packet Data Unit (PDU), where the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set.

[0136] In one embodiment, during the application session update request process executed by the first network device, first information is sent to the second network device; wherein, the first information is used to indicate the PSI associated with the independent packet data unit (PDU), and the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set; the first information is used to determine the PDU set information corresponding to the independent PDU sent to the RAN.

[0137] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods in the embodiments of this disclosure or some methods in related technologies.

[0138] like Figure 6 As shown, this embodiment provides an information indication method, wherein the method is executed by a first network device, and the method includes:

[0139] Step 61: In the execution of the QoS processing flow based on PDU set, send the first information to the second network device;

[0140] The first information is used to indicate the PSI associated with the Independent Packet Data Unit (PDU), where the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set.

[0141] In one embodiment, during the execution of a QoS processing flow based on a PDU set, first information is sent to a second network device; wherein, the first information is used to indicate the PSI associated with an independent packet data unit (PDU), and the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set; the first information is used to determine the PDU set information corresponding to the independent PDU to be sent to the RAN.

[0142] To better understand the embodiments of this disclosure, the following exemplary embodiment will be used to further illustrate the technical solution of this disclosure:

[0143] Example 2:

[0144] Please see Figure 7 A method for indicating information is provided, the method comprising:

[0145] Step 701: The AF can send information to the PCF via the Nnef_AFsessionWithQoS_Create request. For example, the information sent may include QoS parameters for each PDU set within the QoS stream, as well as parameters regarding frame identification.

[0146] The AF can also provide this information to the 5GS before the PDU session is established. The AF sends the PSI indication to the 5GC, such as the NEF / PCF. The AF can provide the NEF / PCF with first information during the AF QoS request process. The first information is used to indicate the PSI associated with the independent packet data unit (PDU), which is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set. The first information is used to determine the PDU set information corresponding to the independent PDU that is sent to the RAN.

[0147] The first information may be included in the auxiliary information related to the PDU set, or it may be a separate piece of information. The information sent to the PCF may include a protocol description and auxiliary information related to the PDU set. The auxiliary information related to the PDU set may include QoS parameters for each PDU set within the QoS flow: a PDU set processing indication, which indicates whether flow activation based on the PDU set should be performed. This indication may be implicitly provided by other PDU set-related information provided by the AF; second information, indicating whether all PDUs are required using the application layer settings; the PDU set delay budget; and / or the PDU set bit error rate.

[0148] Step 702: The PCF generates appropriate PCC rules, which may include QoS parameters related to the PDU set. The PCF then sends the PCC rules to the SMF.

[0149] The PCF determines the PCC rule based on the first information. The PCF then sends the first information received from the AF or NEF to the SMF through the PCC rule.

[0150] Among them, the PDU set-related QoS parameters are new QoS parameters used for PDU set-based QoS processing in 5GS, and may also include:

[0151] PDU set delay budget;

[0152] PDU set bit error rate;

[0153] Does using the PDUs set at the application layer require all PDUs?

[0154] Whether to discard the PDU set when it exceeds the PSDB.

[0155] Step 703: SMF generates QoS configuration and N4 rules based on PCC rules from PCF.

[0156] The SMF sends the N4 rules to the UPF and the QoS configuration to the RAN node via the AMF. As part of the PCC rules, auxiliary information related to the protocol description and PDU set is sent to the SMF. The SMF then sends these to the NG-RAN as part of the QoS configuration via the AMF. Once the PCC rules are received, the SMF forwards the initial information to the UPF (e.g., via the N4 session).

[0157] Step 704: Perform the remaining steps of the PDU session establishment or modification process.

[0158] Step 705: Based on the received N4 rules or the local configuration on the UPF, the UPF identifies relevant information and performs QoS processing based on PDU sets according to the N4 rule instructions. The UPF identifies the PDUs belonging to the PDU set and the following information for each PDU set.

[0159] UPF identifies individual PDUs and determines the PSI of that individual PDU or the PDU set information of that individual PDU based on the local configuration.

[0160] UPF can obtain local configurations from UDM, UDR, and OAM.

[0161] This local configuration can also be referred to as the first information.

[0162] UPF identifies individual PDUs and, taking into account the indication of PSI, determines the PDU set information (including PSI) that it sends to NG-RAN in the GTP-U header.

[0163] PDU set information may include the following parameters:

[0164] In one embodiment, a PDU set sequence number (SN) is used to identify a QoS flow using a QoS flow ID and to identify each PDU set within a QoS flow using a PDU set SN. Each QoS flow can be used to deliver one or more PDU sets.

[0165] Start / end of PDU set;

[0166] PDU serial number in the PDU set;

[0167] The number of PDUs in the PDU set;

[0168] Importance of PDU sets;

[0169] PDU set size;

[0170] The data burst has ended.

[0171] UPF identifies the above parameter information through the following methods / mechanisms:

[0172] Option 1: By matching the RTP / RTCP header and payload;

[0173] Option 2: New RTP extended header;

[0174] Option 3: Based on the information provided by AS in the N6 package header, such as GTP-U;

[0175] Option 4: Through detection based on traffic characteristics,

[0176] Option 5: Implement UPF through a non-standardized mechanism.

[0177] Step 706: The UPF sends the PDU set information to the RAN. The UPF provides the RAN with the aforementioned PDU set information.

[0178] Step 707: The RAN performs QoS processing based on the PDU set information received in step 706.

[0179] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods in the embodiments of this disclosure or some methods in related technologies.

[0180] like Figure 8As shown, this embodiment provides an information indication method, wherein the method is executed by a second network device, and the method includes:

[0181] Step 81: Receive the first information sent by the first network device;

[0182] The first information is used to indicate the PSI associated with the Independent Packet Data Unit (PDU), where the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set.

[0183] In this disclosure, PDU can also be a Packet Data Unit, that is, in some scenarios, "packet data unit" and "protocol data unit" in this disclosure can be used interchangeably.

[0184] In one embodiment, PSI is used to indicate the relative importance of a PDU set relative to other PDU sets in a QoS flow. Different PSI values ​​can be set based on the importance of PDU sets associated with individual PDUs, and the first information can directly indicate the PSI value associated with an individual PDU.

[0185] Independent PDUs do not carry a PDU set extension header, so they cannot be classified into a PDU set by the RAN. When processing PDU sets (e.g., discarding), the RAN cannot definitively determine whether to perform the corresponding processing operation on the independent PDU. Furthermore, even if a PDU carries a PDU set extension header, if the PDU cannot be mapped to a PDU set due to missing specific information, the RAN may also be unable to definitively determine whether to perform the corresponding processing operation when processing the PDU set (e.g., discarding).

[0186] In one embodiment, the set of PDUs associated with an individual PDU is a set of PDUs encapsulated based on the individual PDU.

[0187] In one embodiment, a first piece of information is received from a first network device; wherein the first piece of information is used to indicate the PSI associated with an independent PDU; the first piece of information is used to determine the PDU set information corresponding to the independent PDU sent to a fifth network device. Exemplarily, the first piece of information is used to determine the PDU set information corresponding to the independent PDU in the GTP-U header sent to the fifth network device. Exemplarily, the fifth network device may be a RAN device. In one embodiment, the first network device receives the first piece of information sent by a second network device via (or via a Network Exposure Function (NEF)).

[0188] In one embodiment, during the session establishment request process executed by the first network device, first information sent by the first network device is received. The first information is used to indicate the PSI associated with the independent PDU, wherein the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set; the first information is used to determine the PDU set information corresponding to the independent PDU sent to the fifth network device.

[0189] In one embodiment, during the application session update request process executed by the first network device, the first information sent by the first network device is received. The first information is used to indicate the PSI associated with the independent PDU, wherein the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set; the first information is used to determine the PDU set information corresponding to the independent PDU sent to the fifth network device.

[0190] In one embodiment, during the execution of a QoS processing flow based on a PDU set, first information is received from a first network device, wherein the first information is used to indicate the PSI associated with an independent PDU, and the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set; the first information is used to determine the PDU set information corresponding to the independent PDU sent to the fifth network device.

[0191] In one embodiment, first information is received from a first network device; wherein the first information is used to indicate the PDU set importance (PSI) associated with an independent PDU, and the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set. The first information is then sent to a third network device.

[0192] In one embodiment, first information is received from a first network device; wherein the first information is used to indicate the PDU set importance (PSI) associated with an independent PDU, and the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set. Policy and charging (PCC) rules are determined based on the first information. The PCC rules are then sent to a third network device.

[0193] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods in the embodiments of this disclosure or some methods in related technologies.

[0194] like Figure 9 As shown, this embodiment provides an information indication method, wherein the method is executed by a second network device, and the method includes:

[0195] Step 91: During the session establishment request process executed by the first network device, receive the first information sent by the first network device;

[0196] The first piece of information is used to indicate the PSI associated with an independent PDU, which is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set.

[0197] In one embodiment, during the session establishment request process executed by the first network device, first information sent by the first network device is received; wherein, the first information is used to indicate the PSI associated with the independent PDU, the independent PDU being a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set; the first information is used to determine the PDU set information corresponding to the independent PDU sent to the fifth network device.

[0198] To better understand the embodiments of this disclosure, please refer again. Figure 4 .

[0199] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods in the embodiments of this disclosure or some methods in related technologies.

[0200] like Figure 10 As shown, this embodiment provides an information indication method, wherein the method is executed by a second network device, and the method includes:

[0201] Step 101: During the application session update request process executed by the first network device, receive the first information sent by the first network device;

[0202] The first piece of information is used to indicate the PSI associated with an independent PDU, which is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set.

[0203] In one embodiment, during the application session update request process executed by the first network device, first information sent by the first network device is received; wherein, the first information is used to indicate the PSI associated with the independent PDU, the independent PDU being a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set; the first information is used to determine the PDU set information corresponding to the independent PDU sent to the fifth network device.

[0204] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods in the embodiments of this disclosure or some methods in related technologies.

[0205] like Figure 11As shown, this embodiment provides an information indication method, wherein the method is executed by a second network device, and the method includes:

[0206] Step 111: In the execution of the QoS processing flow based on PDU set, receive the first information sent by the first network device;

[0207] The first piece of information is used to indicate the PSI associated with an independent PDU, which is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set.

[0208] In one embodiment, during the execution of a QoS processing procedure based on a PDU set, first information sent by a first network device is received; wherein, the first information is used to indicate the PSI associated with an independent PDU, the independent PDU being a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set; the first information is used to determine the PDU set information corresponding to the PDU sent to the RAN.

[0209] To better understand the embodiments of this disclosure, please refer again. Figure 7 .

[0210] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods in the embodiments of this disclosure or some methods in related technologies.

[0211] like Figure 12 As shown, this embodiment provides an information indication method, wherein the method is executed by a second network device, and the method includes:

[0212] Step 121: Send the first message to the third network device;

[0213] The first piece of information is used to indicate the PSI associated with an independent PDU, which is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set.

[0214] In one embodiment, first information is received from a first network device; wherein the first information is used to indicate the PDU set importance (PSI) associated with an independent PDU, and the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set. The first information is then sent to a third network device.

[0215] In one embodiment, first information is received from a first network device; wherein the first information is used to indicate the PDU set importance (PSI) associated with an independent PDU, and the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set. Policy and charging (PCC) rules are determined based on the first information. The PCC rules are then sent to a third network device.

[0216] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods in the embodiments of this disclosure or some methods in related technologies.

[0217] like Figure 13 As shown, this embodiment provides an information indication method, wherein the method is executed by a second network device, and the method includes:

[0218] Step 131: Determine policy control and charging (PCC) rules based on the first information;

[0219] The first piece of information is used to indicate the PSI associated with an independent PDU, which is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set.

[0220] In one embodiment, first information sent by a first network device is received; wherein the first information is used to indicate the PDU set importance (PSI) associated with an independent PDU, and the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set. PCC rules are determined based on the first information. The PCC rules are then sent to a third network device.

[0221] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods in the embodiments of this disclosure or some methods in related technologies.

[0222] like Figure 14 As shown, this embodiment provides an information indication method, wherein the method is executed by a third network device, and the method includes:

[0223] Step 141: Receive the first information sent by the second network device;

[0224] The first information is used to indicate the PDU set importance (PSI) associated with an independent PDU. An independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set.

[0225] In this disclosure, PDU can also be a Packet Data Unit, that is, in some scenarios, "packet data unit" and "protocol data unit" in this disclosure can be used interchangeably.

[0226] In one embodiment, PSI is used to indicate the relative importance of a PDU set relative to other PDU sets in a QoS flow. Different PSI values ​​can be set based on the importance of PDU sets associated with individual PDUs, and the first information can directly indicate the PSI value associated with an individual PDU.

[0227] Independent PDUs do not carry a PDU set extension header, so they cannot be classified into a PDU set by the RAN. When processing PDU sets (e.g., discarding), the RAN cannot definitively determine whether to perform the corresponding processing operation on the independent PDU. Furthermore, even if a PDU carries a PDU set extension header, if the PDU cannot be mapped to a PDU set due to missing specific information, the RAN may also be unable to definitively determine whether to perform the corresponding processing operation when processing the PDU set (e.g., discarding).

[0228] In one embodiment, the set of PDUs associated with an individual PDU is a set of PDUs encapsulated based on the individual PDU.

[0229] In one embodiment, a first message sent by a second network device is received; wherein the first message is used to indicate the PDU set importance (PSI) associated with an independent PDU, and the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set; the first message is used to determine the PDU set information corresponding to the independent PDU sent to the fifth network device.

[0230] In one embodiment, a PCC rule sent by a second network device is received; wherein the PCC rule is determined based on first information; the first information is used to indicate the PDU set importance (PSI) associated with an independent PDU, and an independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set;

[0231] In one embodiment, a PCC rule sent by a second network device is received; wherein the PCC rule is determined based on first information; the first information is used to indicate the PDU set importance (PSI) associated with an independent PDU, and an independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set.

[0232] In one embodiment, a first message is received from a second network device; wherein the first message is used to indicate the PDU set importance (PSI) associated with an independent PDU, and the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set; the first message is then sent to a fourth network device. The first message is used by the fourth network device to determine the PDU set information corresponding to the independent PDU to be sent to the fifth network device.

[0233] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods in the embodiments of this disclosure or some methods in related technologies.

[0234] like Figure 15 As shown, this embodiment provides an information indication method, wherein the method is executed by a third network device, and the method includes:

[0235] Step 151: Send the first message to the fourth network device;

[0236] The first piece of information is used to indicate the PSI associated with an independent PDU, which is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set.

[0237] In one embodiment, a first message is received from a second network device; wherein the first message is used to indicate the PDU set importance (PSI) associated with an independent PDU, and the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set; the first message is then sent to a fourth network device. The first message is used by the fourth network device to determine the PDU set information corresponding to the independent PDU to be sent to the fifth network device.

[0238] In one embodiment, a PCC rule sent by a second network device is received; wherein the PCC rule is determined based on first information; the first information is used to indicate the PDU set importance (PSI) associated with an independent PDU, and an independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set. The first information is then sent to a fourth network device.

[0239] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods in the embodiments of this disclosure or some methods in related technologies.

[0240] like Figure 16 As shown, this embodiment provides an information indication method, wherein the method is executed by a fourth network device, and the method includes:

[0241] Step 161: Receive first information sent by the first network device or the third network device;

[0242] The first piece of information is used to indicate the PSI associated with an independent PDU, which is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set.

[0243] In this disclosure, PDU can also be a Packet Data Unit, that is, in some scenarios, "packet data unit" and "protocol data unit" in this disclosure can be used interchangeably.

[0244] In one embodiment, PSI is used to indicate the relative importance of a PDU set relative to other PDU sets in a QoS flow. Different PSI values ​​can be set based on the importance of PDU sets associated with individual PDUs, and the first information can directly indicate the PSI value associated with an individual PDU.

[0245] Independent PDUs do not carry a PDU set extension header, so they cannot be classified into a PDU set by the RAN. When processing PDU sets (e.g., discarding), the RAN cannot definitively determine whether to perform the corresponding processing operation on the independent PDU. Furthermore, even if a PDU carries a PDU set extension header, if the PDU cannot be mapped to a PDU set due to missing specific information, the RAN may also be unable to definitively determine whether to perform the corresponding processing operation when processing the PDU set (e.g., discarding).

[0246] In one embodiment, the set of PDUs associated with an individual PDU is a set of PDUs encapsulated based on the individual PDU.

[0247] In one embodiment, first information is received from a first network device or a third network device; wherein the first information is used to indicate the PDU set importance (PSI) associated with an independent PDU, and the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set; the first information is used to determine the PDU set information corresponding to the independent PDU sent to the fifth network device.

[0248] In one embodiment, the fourth network device receives the RTP SDF and / or RTCP SDF containing the independent PDU sent by the first network device, wherein the RTCP SDF and / or RTP SDF carry first information. The first information is used to indicate the PSI associated with the independent PDU, wherein the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set; the first information is used to determine the PDU set information corresponding to the independent PDU sent to the fifth network device.

[0249] In one embodiment, first information is received from a first network device or a third network device; wherein the first information is used to indicate the PDU set importance (PSI) associated with an independent PDU, and the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set. The independent PDU is identified; based on the first information, the PDU set information corresponding to the independent PDU in the GTP-U header sent to the fifth network device is determined.

[0250] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods in the embodiments of this disclosure or some methods in related technologies.

[0251] like Figure 17 As shown, this embodiment provides an information indication method, wherein the method is executed by a fourth network device, and the method includes:

[0252] Step 171: Receive the RTP SDF and / or associated RTCP SDF of the independent PDU sent by the first network device;

[0253] Among them, RTCP SDF and / or RTP SDF carry the first information.

[0254] In one embodiment, the fourth network device receives the RTPSDF and / or associated RTCP SDF of the independent PDU sent by the first network device, wherein the RTCP SDF and / or RTP SDF carry first information. The first information is used to indicate the PSI associated with the independent PDU, wherein the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set; the first information is used to determine the PDU set information corresponding to the independent PDU sent to the fifth network device.

[0255] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods in the embodiments of this disclosure or some methods in related technologies.

[0256] like Figure 18A As shown, this embodiment provides an information indication method, wherein the method is executed by a fourth network device, and the method includes:

[0257] Step 181a: Determine the independent PDU;

[0258] Step 182a: Based on the first information, determine the PDU set information in the GTP-U header corresponding to the independent PDU that is sent to the fifth network device.

[0259] In one embodiment, the fifth network device may be an access network device in the RAN.

[0260] In one embodiment, first information is received from a first network device or a third network device; wherein the first information is used to indicate the PDU set importance (PSI) associated with an independent PDU, and the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set. The independent PDU is identified; based on the first information, the PDU set information corresponding to the independent PDU in the GTP-U header to be sent to the Radio Access Network (RAN) is determined.

[0261] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods in the embodiments of this disclosure or some methods in related technologies.

[0262] like Figure 18B As shown, this embodiment provides an information indication method, wherein the method is executed by a fourth network device, and the method includes:

[0263] Step 181b: Determine the independent PDU.

[0264] Optionally, in some embodiments, the fourth network device can determine whether a PDU is an independent PDU. The method by which the fourth network device determines whether a PDU is an independent PDU can be referred to the textual description above, and will not be repeated here.

[0265] For example, if the fourth network device determines that any PDU does not belong to or is not mapped to the PDU SET, then it determines that the PDU is an independent PDU.

[0266] Optionally, in some embodiments, the fourth network device may receive data sent by the first network device, the data including multiple PDUs, the multiple PDUs including independent PDUs.

[0267] S182b: Determine the PSI corresponding to an independent PDU.

[0268] S182b is an optional step.

[0269] Optionally, in some embodiments, the fourth network device may determine the PSI corresponding to an independent PDU in a variety of ways, which are not limited here.

[0270] For example, the fourth network device can determine the PSI through the first information, which is the PSI corresponding to the independent PDU. The first information can be pre-configured locally, or it can be obtained from the first network device, or it can be obtained from the UDM, or it can be obtained from the UDR, or it can be obtained from the Operation Administrative and Maintenance (OAM) management system.

[0271] The first information can also be called the first strategy.

[0272] S183b: Determine the PDU set information corresponding to an independent PDU or determine the PDU set mapped to an independent PDU.

[0273] S183b is an optional step.

[0274] Optionally, in some embodiments, the fourth network device may determine the PDU set mapped by the independent PDU based on the first information or the PSI corresponding to the independent PDU or the PDU set information corresponding to the independent PDU.

[0275] Optionally, in some embodiments, the fourth network device can determine the PDU set information through the first information, which is the PDU set information corresponding to the independent PDU.

[0276] Optionally, in some embodiments, the fourth network device can determine the PDU set information through PSI, which is the PDU set information corresponding to the independent PDU.

[0277] Optionally, in some embodiments, the fourth network device can determine the PSI in the PDU set information through the PSI, where the PDU set information is the PDU set information corresponding to the independent PDU. Other information in the PDU set information can be determined in other ways, and is not limited here.

[0278] Optionally, in some embodiments, the fourth network device may encapsulate the PDU set information corresponding to the independent PDU into the General Packet Radio Service Tunneling Protocol User Plane GTP-U header.

[0279] Optionally, in some embodiments, after determining the PDU set information corresponding to an independent PDU, the PDU set corresponding to that independent PDU can be determined.

[0280] Optionally, in some embodiments, after determining the PSI corresponding to an independent PDU, the PDU set corresponding to that independent PDU can be determined. For example, if the PSI of an independent PDU is PSI1, and the PSI of a certain PDU set is PSI2, if PSI1 and PSI2 have a corresponding relationship, then the independent PDU and the PDU set have a mapping relationship, that is, the fourth network device can map the independent PDU to the PDU set. The corresponding relationship between PSI1 and PSI2 can mean that PSI1 can be equal to PSI2, or F(PSI1) = PSI2, where F() is the mapping relationship.

[0281] S184b: Send a second message, which includes PDU set information.

[0282] The fourth network device sends a second message to the access network device.

[0283] S184b is an optional step.

[0284] Optionally, in some embodiments, the second message includes a separate PDU.

[0285] Optionally, in some embodiments, the second message includes the PSI corresponding to the independent PDU.

[0286] Optionally, in some embodiments, the second message includes an independent PDU, and / or the PSI corresponding to the independent PDU and / or the PDU set information corresponding to the independent PDU.

[0287] Optionally, in some embodiments, the access network device may determine the PDU set of independent PDU mapping based on the second information.

[0288] like Figure 19 As shown, this embodiment of the present disclosure provides an information indication system, wherein the system includes a first network device 191, a second network device 192, a third network device 193, and a fourth network device 194; the first network device 191 performs the method as performed by any first network device 191 of the present disclosure; the second network device 192 performs the method as performed by any second network device 192 of the present disclosure; the third network device 193 performs the method as performed by any third network device 193 of the present disclosure; and the fourth network device 194 performs the method as performed by any fourth network device 194 of the present disclosure.

[0289] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods in the embodiments of this disclosure or some methods in related technologies.

[0290] like Figure 20 As shown, this embodiment of the disclosure provides an information indicating device, wherein the device includes:

[0291] The sending module 201 is configured to send first information to a second network device or a fourth network device;

[0292] The first piece of information is used to indicate the PSI associated with an independent PDU, which is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set.

[0293] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods in the embodiments of this disclosure or some methods in related technologies.

[0294] like Figure 21As shown, this embodiment of the disclosure provides an information indicating device, wherein the device includes:

[0295] The receiving module 211 is configured to receive first information sent by the first network device;

[0296] The first piece of information is used to indicate the PSI associated with an independent PDU, which is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set.

[0297] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods in the embodiments of this disclosure or some methods in related technologies.

[0298] like Figure 22 As shown, this embodiment of the disclosure provides an information indicating device, wherein the device includes:

[0299] The receiving module 221 is configured to receive first information sent by the second network device;

[0300] The first piece of information is used to indicate the PSI associated with an independent PDU, which is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set.

[0301] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods in the embodiments of this disclosure or some methods in related technologies.

[0302] like Figure 23 As shown, this embodiment of the disclosure provides an information indicating device, wherein the device includes:

[0303] The receiving module 231 is configured to receive first information sent by a first network device or a third network device;

[0304] The first piece of information is used to indicate the PSI associated with an independent PDU, which is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set.

[0305] This disclosure provides an information indication device, wherein the device includes: a determination module 241.

[0306] The determination module 241 is configured to determine an independent PDU, and / or determine the PSI corresponding to the independent PDU, and / or determine the PDU set information corresponding to the independent PDU, and / or determine the PDU set mapped by the independent PDU.

[0307] The module can also be configured to perform other steps, as described above, and will not be repeated here. For example, Figure 18B Some steps in the process can be performed by a specific module.

[0308] The indicating device may also include a transmitting module 242, which can receive first data including an independent PDU, and / or can transmit the PSI corresponding to the independent PDU, the PDU set information corresponding to the independent PDU, the PDU set corresponding to the independent PDU, etc.

[0309] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods in the embodiments of this disclosure or some methods in related technologies.

[0310] This disclosure provides a communication device, which includes:

[0311] processor;

[0312] Memory used to store processor-executable instructions;

[0313] The processor is configured to implement, when running executable instructions, the methods applicable to any embodiment of this disclosure.

[0314] The processor may include various types of storage media, which are non-transitory computer storage media that can continue to store information after the communication device loses power.

[0315] The processor can connect to the memory via a bus or other means to read executable programs stored in the memory.

[0316] This disclosure also provides a computer storage medium storing a computer executable program, which, when executed by a processor, implements the method of any embodiment of this disclosure.

[0317] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0318] like Figure 24 As shown, one embodiment of this disclosure provides a terminal structure.

[0319] Reference Figure 24 The terminal 800 shown in this embodiment is a mobile phone, computer, digital broadcasting terminal, messaging device, game console, tablet device, medical device, fitness device, personal digital assistant, etc.

[0320] Reference Figure 24 Terminal 800 may include one or more of the following components: processing component 802, memory 804, power supply component 806, multimedia component 808, audio component 810, input / output (I / O) interface 812, sensor component 814, and communication component 816.

[0321] Processing component 802 typically controls the overall operation of terminal 800, such as operations associated with display, telephone calls, data communication, camera operation, and recording. Processing component 802 may include one or more processors 820 to execute instructions to complete all or part of the steps of the methods described above. Furthermore, processing component 802 may include one or more modules to facilitate interaction between processing component 802 and other components. For example, processing component 802 may include a multimedia module to facilitate interaction between multimedia component 808 and processing component 802.

[0322] Memory 804 is configured to store various types of data to support the operation of device 800. Examples of this data include instructions for any application or method operating on terminal 800, contact data, phonebook data, messages, pictures, videos, etc. Memory 804 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0323] Power supply component 806 provides power to various components of terminal 800. Power supply component 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to terminal 800.

[0324] Multimedia component 808 includes a screen that provides an output interface between terminal 800 and user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of touch or swipe actions but also the duration and pressure associated with the touch or swipe operation. In some embodiments, multimedia component 808 includes a front-facing camera and / or a rear-facing camera. When device 800 is in an operating mode, such as shooting mode or video mode, the front-facing camera and / or rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0325] Audio component 810 is configured to output and / or input audio signals. For example, audio component 810 includes a microphone (MIC) configured to receive external audio signals when terminal 800 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 804 or transmitted via communication component 816. In some embodiments, audio component 810 also includes a speaker for outputting audio signals.

[0326] I / O interface 812 provides an interface between processing component 802 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.

[0327] Sensor assembly 814 includes one or more sensors for providing status assessments of various aspects of terminal 800. For example, sensor assembly 814 may detect the on / off state of device 800, the relative positioning of components such as the display and keypad of terminal 800, changes in the position of terminal 800 or a component of terminal 800, the presence or absence of user contact with terminal 800, the orientation or acceleration / deceleration of terminal 800, and temperature changes of terminal 800. Sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 814 may also include an accelerometer, a gyroscope, a magnetometer, a pressure sensor, or a temperature sensor.

[0328] Communication component 816 is configured to facilitate wired or wireless communication between terminal 800 and other devices. Terminal 800 can access wireless networks based on communication standards, such as Wi-Fi, 2G, or 3G, or combinations thereof. In one exemplary embodiment, communication component 816 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 816 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0329] In an exemplary embodiment, terminal 800 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the methods described above.

[0330] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 804 including instructions, which can be executed by a processor 820 of a terminal 800 to perform the above-described method. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0331] like Figure 25 As shown, one embodiment of this disclosure illustrates the structure of a base station. For example, base station 900 can be provided as a network-side device. (Refer to...) Figure 25 The base station 900 includes a processing component 922, which further includes one or more processors, and memory resources represented by a memory 932 for storing instructions, such as application programs, that can be executed by the processing component 922. The application programs stored in the memory 932 may include one or more modules, each corresponding to a set of instructions. Furthermore, the processing component 922 is configured to execute instructions to perform any of the methods described above applied to the base station.

[0332] Base station 900 may also include a power supply component 926 configured to perform power management of base station 900, a wired or wireless network interface 950 configured to connect base station 900 to a network, and an input / output (I / O) interface 958. Base station 900 can operate on an operating system stored in memory 932, such as Windows Server™, Mac OS X™, Unix™, Linux™, FreeBSD™, or similar.

[0333] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0334] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. An information indication method, wherein, The method is performed by a first network device, and the method includes: Send the first information to the second or fourth network device; The first information is used to indicate the PDU set importance (PSI) associated with an independent packet data unit (PDU), wherein the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set.

2. The method according to claim 1, wherein, Sending the first information to the second network device includes one of the following: During the session establishment request process executed by the first network device, the first information is sent to the second network device; During the application session update request process executed by the first network device, the first information is sent to the second network device; During the execution of the QoS processing procedure based on the PDU set, the first information is sent to the second network device.

3. The method according to claim 1, wherein, Sending the first information to the fourth network device includes: Send the Real-Time Transport Protocol (RTP) SDF and / or associated Real-Time Transport Control Protocol (RTCP) SDF of the independent PDU to the fourth network device; The RTCP SDF and / or the RTP SDF carry the first information.

4. The method according to claim 1, wherein, The first network device is an application function (AF), the second network device is a policy control function (PCF), and / or the fourth network device is a user plane function (UPF).

5. An information indication method, wherein, The method is performed by a second network device, and the method includes: Receive the first information sent by the first network device; The first information is used to indicate the PSI associated with an independent PDU, wherein the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set.

6. The method according to claim 5, wherein, The first information received from the first network device includes one of the following: During the session establishment request process executed by the first network device, the first information sent by the first network device is received. During the application session update request process executed by the first network device, the first information sent by the first network device is received. In the execution of the QoS processing flow based on PDU set, the first information sent by the first network device is received.

7. The method according to claim 5, wherein, The first network device is an application function (AF), and / or the second network device is a policy control function (PCF).

8. The method according to claim 5, wherein, The method further includes: Send the first information to the third network device.

9. The method according to claim 8, wherein, The method further includes: Based on the first information, determine the strategy and billing control (PCC) rules; Sending the first information to the third network device includes: The PCC rule is sent to the third network device.

10. The method according to claim 8, wherein, The third network device is a Session Management Function (SMF).

11. An information indication method, wherein, The method is performed by a third network device, and the method includes: Receive the first information sent by the second network device; The first information is used to indicate the PSI associated with an independent PDU, wherein the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set.

12. The method according to claim 11, wherein, The first information received from the second network device includes: Receive the PCC rules sent by the second network device; The PCC rule is determined based on the first information.

13. The method according to claim 11, wherein, The method further includes: Send the first information to the fourth network device.

14. The method according to claim 13, wherein, The fourth network device is the User Plane Management Function (UPF).

15. The method according to claim 11, wherein, The second network device is a PCF, and, or the third network device is a Session Management Function (SMF).

16. An information indication method, wherein, The method is performed by a fourth network device, and the method includes: Receive first information sent by a first network device or a third network device; The first information is used to indicate the PSI associated with an independent PDU, wherein the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set.

17. The method according to claim 16, wherein, The receipt of the first information sent by the first network device includes: Receive the Real-time Transport Protocol SDF (RTP SDF) and / or associated Real-time Transport Control Protocol Service (RTCP SDF) data streams sent by the first network device containing the independent PDU; The RTCP SDF and / or the RTP SDF carry the first information.

18. The method according to claim 16, wherein, The method further includes: Identify independent PDUs; Based on the first information, the PDU set information corresponding to the independent PDU in the GTP-U header of the user plane of the General Packet Radio Service Tunneling Protocol is determined and sent to the Radio Access Network (RAN).

19. The method of claim 16, wherein, The first network device is AF, the third network device is SMF and / or the fourth network device is SMF.

20. An information indication method, applied to a system, wherein, The method includes: The first network device sends the first information to the second or fourth network device; The first information is used to indicate the PSI associated with an independent PDU, wherein the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set.

21. The method according to claim 20, wherein, The method further includes: The second network device determines the policy and charging control (PCC) rules based on the first information; The second network device sends the PCC rule to the third network device.

22. The method according to claim 21, wherein, The method further includes: The third network device determines the first information based on the PCC rules; The third network device sends the first information to the fourth network device.

23. The method according to claim 22, wherein, The method further includes: The fourth network device determines the independent PDU and, based on the first information, determines the PDU set information corresponding to the independent PDU in the General Packet Radio Service Tunneling Protocol User Plane (GTP-U) header sent to the Radio Access Network (RAN).

24. An information indicating device, wherein, The device includes: The sending module is configured to send first information to a second network device or a fourth network device; The first information is used to indicate the PSI associated with the Independent Packet Data Unit (PDU), wherein the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set.

25. An information indicating device, wherein, The device includes: The receiving module is configured to receive first information sent by the first network device; The first information is used to indicate the PSI associated with the Independent Packet Data Unit (PDU), wherein the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set.

26. An information indicating device, wherein, The device includes: The receiving module is configured to receive first information sent by the second network device; The first information is used to indicate the PSI associated with the Independent Packet Data Unit (PDU), wherein the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set.

27. An information indicating device, wherein, The device includes: The receiving module is configured to receive first information sent by a first network device or a third network device; The first information is used to indicate the PSI associated with the Independent Packet Data Unit (PDU), wherein the independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set.

28. A communication system, wherein, The communication system includes: a first network device, a second network device, a third network device, and a fourth network device; wherein the first network device performs the method as described in any one of claims 1-4; the second network device performs the method as described in any one of claims 5-10; the third network device performs the method as described in any one of claims 11-15; and the fourth network device performs the method as described in any one of claims 16 to 19.

29. A communication device, wherein, include: One or more processors; The processor is configured to invoke instructions to cause the communication device to execute the information indication method according to any one of claims 1 to 4, 5 to 10, 11 to 15, 16 to 19, or 20 to 23.

30. A storage medium storing instructions, characterized in that, When the instruction is executed on the communication device, the communication device performs the information indication method as described in any one of claims 1 to 4, 5 to 10, 11 to 15, 16 to 19, or 20 to 23.

31. An information indication method, wherein, The method is performed by a fourth network device, and the method includes: Identify independent PDUs, where an independent PDU is a PDU that does not carry a PDU set extension header or cannot be mapped to a PDU set; The PSI is determined based on the first information, which corresponds to the independent PDU. The first information is either pre-configured information locally by the fourth network device, or obtained from the UDM, or obtained from the UDR, or obtained from the OAM.

32. The method according to claim 31, wherein, The method further includes: Receive the first information sent by the UDM; Alternatively, receive the first information sent by the UDR; Alternatively, receive the first information sent by the OAM.

33. The method according to claim 31 or 32, wherein, The method further includes: The PDU set information corresponding to the independent PDU is determined based on the PSI.

34. The method according to claim 31 or 32, wherein, The method further includes: Based on the first information, the PDU set information corresponding to the independent PDU is determined.

35. The method according to claim 34, wherein, The method further includes: The PDU set information is encapsulated into the General Packet Radio Service Tunneling Protocol User Plane GTP-U header.

36. The method according to claim 31 or 32, wherein, The method further includes: The PDU set of the independent PDU mapping is determined based on the PSI.

37. The method of claim 36, wherein, The process of determining the PDU set of the independent PDU mapping based on the PSI includes: The PDU set of the independent PDU mapping is determined based on the PSI and the PDU set.

38. The method according to claim 37, wherein, The independent PDU includes a first PDU, and the PDU set includes a first PDU set; the PSI corresponding to the independent PDU is the first PSI, the PDU set information of the first PDU set is the second PSI, the first PSI corresponds to the second PSI, and the first PDU is mapped to the first PDU set.

39. The method according to claim 33, wherein, The method further includes: Send a second message to the access network device, the second message including the PDU set information.

40. The method according to claim 31 or 32, further comprising: Receive the independent PDU sent by the first network device.

41. The method according to claim 40, wherein, The first network device is AF, or the first network device is the server corresponding to AF.

42. The method according to claim 40, wherein, Receiving the independent PDU sent by the first network device includes: Receive the first data sent by the first network device; The independent PDU is determined from the first data.

43. The method according to claim 31 or 32, wherein, The fourth network device is a UPF.

44. An information indicating device, wherein, The device includes: The module is configured to determine independent PDUs, wherein the independent PDUs are PDUs that do not carry a PDU set extension header or cannot be mapped to a PDU set; The determination module is configured to determine the PSI based on first information, which corresponds to the independent PDU. The first information is either pre-configured information locally on the fourth network device, or obtained from the UDM, or obtained from the UDR, or obtained from the OAM.

45. A communication device, wherein, include: One or more processors; The processor is used to invoke instructions to cause the communication device to execute the information indication method according to any one of claims 31 to 43.

46. ​​A storage medium storing instructions, characterized in that, When the instruction is executed on the communication device, the communication device performs the information indication method as described in any one of claims 31 to 43.

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