Session processing method and device, equipment, medium and product

Abstract

The invention relates to a session processing method and device, equipment, a medium and a product, and relates to the field of communication. The method comprises the following steps: receiving a processing capability indication of a target base station to a PDU Set, and sending a session processing instruction to a UPF network element based on the processing capability indication. Wherein the session processing instruction is used for indicating the UPF network element to execute PDU Set identification and marking processing operation on the downlink PDU. By adopting the method, the effectiveness of the UPF network element on the downlink PDU processing operation can be improved, and the waste of computing resources of the UPF network element is avoided.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a session processing method, device, equipment, medium and product. Background Art

[0002] With the vigorous development of communication technology, in the media service data stream represented by Extended Reality (XR) technology, there are multiple Protocol Data Units (PDUs) that jointly carry one information unit.

[0003] In the 3rd Generation Partnership Project (3GPP) Extended Reality Multimedia (XRM) project, for the downlink transmission of PDU, the user plane function (UPF) network element is required to divide multiple PDUs carrying an information unit into a PDU Set, so that the base station can perform differentiated processing on the PDU Set.

[0004] However, the base station may be unable to identify the PDU Set, resulting in a waste of UPF computing resources. Summary of the invention

[0005] The embodiments of the present application provide a session processing method, apparatus, device, medium and product, which can avoid the UPF network element from performing PDU Set identification and marking processing operations on the downlink PDU by reporting the PDU Set processing capability through the base station when the base station cannot identify the PDU Set, thereby avoiding the waste of UPF network element computing resources.

[0006] In a first aspect, an embodiment of the present application provides a session processing method, which is applied to a session management function SMF network element. The method includes:

[0007] receiving an indication of the processing capability of the target base station for the PDU Set;

[0008] A session processing instruction is sent to the UPF network element based on the processing capability indication; the session processing instruction is used to instruct the UPF network element to identify and mark the downlink PDU as a PDU Set processing operation.

[0009] In one of the embodiments, the processing capability indication includes that the target base station does not support PDU Set-based QoS processing, or that the target base station supports PDU Set-based QoS processing.

[0010] In one of the embodiments, when the target base station does not support PDU Set-based QoS processing, the session processing instruction is used to deactivate the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0011] In one of the embodiments, when the target base station supports PDU Set-based QoS processing, the session processing instruction is used to activate the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0012] In one of the embodiments, the processing capability indication is sent by the target base station when establishing a PDU session.

[0013] In one of the embodiments, the processing capability indication is carried by the target base station in the PDU session request and sent via the AMF network element.

[0014] In one of the embodiments, the processing capability indication is sent by the target base station when modifying the PDU session.

[0015] In one of the embodiments, the processing capability indication is carried by the target base station in the path switching request, and the path switching request is triggered when the user terminal UE moves from the source base station to the target base station through the first interface; the first interface represents the network interface between the target base station and the source base station.

[0016] In one of the embodiments, the processing capability indication is carried by the target base station and sent in the switching request confirmation; the switching request confirmation is triggered when the UE moves from the source base station to the target base station through the second interface; the second interface represents the network interface between the target base station and the AMF network element.

[0017] In one of the embodiments, the method further includes: receiving a response message to the session processing instruction sent by the UPF network element.

[0018] In one of the embodiments, before receiving the processing capability indication of the target base station for the PDU Set sent by the AMF network element, the method further includes:

[0019] The quality of service (QoS) information is sent to the target base station through the AMF network element; the QoS information carries the QoS parameters of the PDU Set.

[0020] In one embodiment, the method further comprises:

[0021] Receive the processing capability indication sent by the target base station through the AMF network element.

[0022] Second method: The embodiment of the present application provides a session processing method, which is applied to a target base station. The method includes:

[0023] The AMF network element sends an indication of the processing capability of the PDU Set to the SMF network element to instruct the SMF network element to send a session processing instruction to the UPF network element; the session processing instruction is used to instruct the UPF network element to identify and mark the downlink PDU as a processing operation of the PDU Set.

[0024] In one of the embodiments, the processing capability indication includes that the target base station does not support PDU Set-based QoS processing, or that the target base station supports PDU Set-based QoS processing.

[0025] In one of the embodiments, when the target base station does not support PDU Set-based QoS processing, the session processing instruction is used to deactivate the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0026] In one of the embodiments, when the target base station supports PDU Set-based QoS processing, the session processing instruction is used to instruct the UPF network element to allow the execution of PDU Set identification and marking processing operations on the downlink PDU.

[0027] In one of the embodiments, the processing capability indication is sent by the target base station when establishing a PDU session.

[0028] In one embodiment, the method further comprises:

[0029] The processing capability indication is carried in the PDU session request and sent to the SMF network element via the AMF network element.

[0030] In one of the embodiments, the processing capability indication is sent by the target base station when modifying the PDU session.

[0031] In one embodiment, the method further comprises:

[0032] The processing capability indication is carried in the path switching request and sent to the SMF network element through the AMF network element; the path switching request is triggered when the UE moves from the source base station to the target base station through the first interface; the first interface represents the network interface between the target base station and the source base station.

[0033] In one embodiment, the method further comprises:

[0034] The processing capability indication is carried in the switching request confirmation and sent to the SMF network element through the AMF network element; the switching request confirmation is triggered when the UE moves from the source base station to the target base station through the second interface; the second interface represents the network interface between the target base station and the AMF network element.

[0035] In one of the embodiments, before sending a processing capability indication for a PDU Set to an AMF network element, the method further includes:

[0036] Receive QoS information sent by SMF network element through AMF network element; QoS information includes QoS parameters of PDU Set;

[0037] Send an indication of the processing capability of the PDU Set to the AMF network element based on the QoS information.

[0038] In one embodiment, the method further comprises:

[0039] According to the QoS parameters of the PDU Set, air interface resources are established with the UE; the air interface resources are used for data transmission with the UE.

[0040] In a third aspect, an embodiment of the present application provides a session processing method, which is applied to an AMF network element. The method includes:

[0041] receiving an indication of the processing capability of the target base station for the PDU Set sent by the target base station;

[0042] Send a processing capability indication to the SMF network element to instruct the SMF network element to send a session processing instruction to the UPF network element; the session processing instruction is used to instruct the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0043] In one of the embodiments, the processing capability indication includes that the target base station does not support PDU Set-based QoS processing, or that the target base station supports PDU Set-based QoS processing.

[0044] In one of the embodiments, when the target base station does not support PDU Set-based QoS processing, the session processing instruction is used to deactivate the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0045] In one of the embodiments, when the target base station supports PDU Set-based QoS processing, the session processing instruction is used to instruct the UPF network element to allow the activation of the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0046] In one of the embodiments, the processing capability indication is sent by the target base station when establishing a PDU session.

[0047] In one of the embodiments, the processing capability indication is carried by the target base station in the PDU session request and sent via the AMF network element.

[0048] In one of the embodiments, the processing capability indication is sent by the target base station when modifying the PDU session.

[0049] In one of the embodiments, the processing capability indication is carried by the target base station in a path switching request, and the path switching request is triggered when the UE moves from the source base station to the target base station through the first interface; the first interface represents the network interface between the target base station and the source base station.

[0050] In one of the embodiments, the processing capability indication is carried by the target base station and sent in the switching request confirmation; the switching request confirmation is triggered when the UE moves from the source base station to the target base station through the second interface; the second interface represents the network interface between the target base station and the AMF network element.

[0051] In one of the embodiments, before sending the processing capability indication of the target base station for the PDU Set to the SMF network element, the method further includes:

[0052] In response to the QoS information sent by the SMF network element, QoS information is sent to the target base station; the QoS information includes QoS parameters of the PDU Set.

[0053] In a fourth aspect, an embodiment of the present application provides a session processing method, which is applied to a UPF network element. The method includes:

[0054] Receive the session processing instruction sent by the SMF network element; the session processing instruction is sent by the SMF network element based on the processing capability indication of the target base station for PDU Set, and the session processing instruction is used to instruct the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0055] In one of the embodiments, the processing capability indication includes that the target base station does not support PDU Set-based QoS processing, or that the target base station supports PDU Set-based QoS processing.

[0056] In one of the embodiments, when the target base station does not support PDU Set-based QoS processing, the session processing instruction is used to deactivate the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0057] In one of the embodiments, when the target base station supports PDU Set-based QoS processing, the session processing instruction is used to activate the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0058] In a fifth aspect, an embodiment of the present application further provides a session processing device, the device comprising:

[0059] A first receiving module, configured to receive an indication of a processing capability of a target base station for a PDU Set;

[0060] The first sending module is used to send a session processing instruction to the user plane function UPF network element based on the processing capability indication; the session processing instruction is used to instruct the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0061] In a sixth aspect, an embodiment of the present application further provides a session processing device, the device comprising:

[0062] The second sending module is used to send a processing capability indication of PDU Set to the AMF network element, so as to instruct the AMF network element to send a session processing instruction to the UPF network element through the SMF network element; the session processing instruction is used to instruct the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0063] In a seventh aspect, an embodiment of the present application further provides a session processing device, the device comprising:

[0064] A second receiving module, configured to receive an indication of the processing capability of the target base station for the PDU Set sent by the target base station;

[0065] The third sending module is used to send a processing capability indication to the SMF network element to instruct the SMF network element to send a session processing instruction to the UPF network element; the session processing instruction is used to instruct the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0066] In an eighth aspect, an embodiment of the present application further provides a session processing device, the device comprising:

[0067] The third receiving module is used to receive the session processing instruction sent by the SMF network element; the session processing instruction is sent by the SMF network element based on the processing capability indication of the target base station for the PDU Set, and the session processing instruction is used to instruct the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0068] In the ninth aspect, an embodiment of the present application also provides a communication device, including a receiver and a transmitter, the receiver being used to receive an indication of the processing capability of the target base station for the PDU Set; the transmitter being used to send a session processing instruction to the user plane function UPF network element based on the processing capability indication; the session processing instruction is used to instruct the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0069] In the tenth aspect, an embodiment of the present application also provides a communication device, including a transmitter, which is used to send a processing capability indication for a PDU Set to an AMF network element, so as to instruct the AMF network element to send a session processing instruction to a UPF network element through an SMF network element; the session processing instruction is used to instruct the UPF network element to perform PDU Set identification and marking processing operations on a downlink PDU.

[0070] In the eleventh aspect, an embodiment of the present application also provides a communication device, including a receiver and a transmitter, the receiver being used to receive an indication of the processing capability of the target base station for the PDU Set sent by the target base station; the transmitter being used to send a processing capability indication to the SMF network element to instruct the SMF network element to send a session processing instruction to the UPF network element; the session processing instruction is used to instruct the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0071] In the twelfth aspect, an embodiment of the present application also provides a communication device, including a receiver for receiving a session processing instruction sent by an SMF network element; the session processing instruction is sent by the SMF network element based on the target base station's indication of the processing capability of the PDU Set, and the session processing instruction is used to instruct the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0072] In the thirteenth aspect, the embodiments of the present application further provide a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the steps of the method in any one of the embodiments of the first to fourth aspects are implemented.

[0073] In a fourteenth aspect, an embodiment of the present application further provides a computer program product, including a computer program, which, when executed by a processor, implements the steps of the method in any one of the embodiments of the first to fourth aspects.

[0074] The session processing method, apparatus, device, medium and product provided in the embodiments of the present application receive the processing capability indication of the target base station for the PDU Set, and send a session processing instruction to the UPF network element based on the processing capability indication. Among them, the session processing instruction is used to instruct the UPF network element to perform the processing operation of PDU Set identification and marking on the downlink PDU. It is equivalent to evaluating whether the base station is capable of performing session processing on the downlink PDU based on the processing capability indication of the target base station for the PDU Set, and sending a session processing instruction to the UPF network element based on the evaluation result of the session processing, so as to flexibly and dynamically set the UPF network element to perform the processing operation of PDU Set identification and marking on the downlink PDU, thereby improving the effectiveness of the UPF network element performing the processing operation of PDU Set identification and marking on the downlink PDU, and avoiding the waste of computing resources of the UPF network element to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] Figure 1 An application environment diagram of a session processing method in an embodiment;

[0076] Figure 2 A flowchart of a session processing method in one embodiment;

[0077] Figure 3 An interactive schematic diagram of a session processing method in one embodiment;

[0078] Figure 4 is an interactive schematic diagram of a session processing method in another embodiment;

[0079] Figure 5 is an interactive schematic diagram of a session processing method in another embodiment;

[0080] Figure 6 is a flow chart of a session processing method in another embodiment;

[0081] Figure 7 is a flow chart of a session processing method in another embodiment;

[0082] Figure 8 is a flow chart of a session processing method in another embodiment;

[0083] Fig. 9 is a flow chart of a session processing method in another embodiment;

[0084] Fig.10 is an interactive schematic diagram of a session processing method in another embodiment;

[0085] Fig.11 is a structural block diagram of a session processing device in one embodiment;

[0086] Fig.12 is a structural block diagram of a session processing device in another embodiment;

[0087] Fig.13 is a structural block diagram of a session processing device in another embodiment;

[0088] Fig.14 is a structural block diagram of a session processing device in another embodiment;

[0089] Fig.15 is a schematic diagram of the structure of a communication device in one embodiment;

[0090] Fig.16 A schematic diagram of the structure of a communication device in another embodiment;

[0091] Fig.17A schematic diagram of the structure of a communication device in another embodiment;

[0092] Fig.18 FIG. 4 is a schematic diagram of the structure of a communication device in another embodiment. DETAILED DESCRIPTION

[0093] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0094] The session processing method, apparatus, device, medium and product provided in the embodiments of the present application can be applied to the application scenario of downlink PDU session processing when the base station where the terminal is located is switched. Of course, it can also be applied to other scenarios, such as establishing a downlink PDU session when the terminal accesses the base station for the first time.

[0095] like Figure 1 As shown, Figure 1 A schematic diagram of an application scenario of a session processing method provided in an embodiment of the present application. The application scenario may include a terminal 100, an access network (Radio Access Network, RAN) device 200, an access and mobility management function (Access and Mobility Management Function, AMF) network element 300, a session management function (Session Management Function, SMF) network element 400 and a user plane function (User Plane Function, UPF) network element 500. Data is transmitted between the terminal 100 and RAN200 through the network, RAN200 and SMF network element 400 transmit data through the AMF network element 300, RAN200 and AMF network element 300 are connected through the N2 interface, and the SMF network element 400 and UPF network element 500 transmit data through the N4 interface.

[0096] The terminal 100 may be a wireless terminal, which may be a device that provides voice and / or other service data connectivity to a user, or a handheld device with a wireless connection function, or other processing devices connected to a wireless modem. The wireless terminal may communicate with one or more core networks via a radio access network (Radio Access Network, referred to as RAN). The wireless terminal may be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, for example, a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device, which exchanges language and / or data with a radio access network. The wireless terminal may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, an access terminal, a user terminal, a user agent, a user device or user equipment, which is not limited here.

[0097] The access network device 200 can be a base station (Base Transceiver Station, BTS) in Global System of Mobilecommunication (GSM) or Code Division Multiple Access (CDMA), or a base station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA), or an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or a base station in a 5G network, etc., and is not limited here.

[0098] AMF network element 300, SMF network element 400 and UPF network element 500 are all network elements in the core network (5G Core network, 5GC) of the fifth generation mobile communication network (the 5th generation mobile communication technology Network, 5G). The AMF network element supports UEs with different mobility management requirements and is responsible for UE identity authentication, authorization, registration, mobility management and connection management functions; the SMF network element is responsible for tunnel maintenance, IP address allocation and management, UPF network element selection, policy implementation and service quality (QoS) control, data collection, roaming, etc.; the UPF network element 500 is responsible for packet routing forwarding, policy implementation, traffic reporting and QoS processing, etc.

[0099] To facilitate the description of the session processing method provided in the embodiment of the present application, the processing steps of the session processing method are described in the embodiment of the present application by taking the terminal as UE and the access network device as a base station as an example.

[0100] When the UE switches from the source base station to the target base station, the base station from which the UE receives information also switches from the source base station to the target base station. The process of transmitting information to the UE in the form of PDU through the access network, base station and multiple network elements is called downlink transmission, and the session processing method provided in the embodiment of the present application is also a method for processing the PDU session during the downlink transmission process.

[0101] In the related technologies, in the media service data stream represented by Extended Reality (XR) technology, there are usually multiple protocol data units (PDUs) that jointly carry one information unit. For example, an I frame in video transmission requires multiple PDUs for transmission, and a P frame in video transmission requires multiple PDUs for transmission.

[0102] Based on this, in the Extended Reality Multimedia (XRM) project of the 3rd Generation Partnership Project (3GPP), for the downlink transmission of PDU, the PDU Set is detected, matched and marked by the UPF network element, and multiple PDUs carrying one information unit are divided into one PDU Set, and the relevant information of the PDU Set is added to the GTP-U header of the multiple PDUs carrying one information unit, such as the sequence number of the PDU Set, the indication of the end of the PDU Set, the signal of the PDU in the PDU Set, the size of the PDU Set (in bytes), the importance of the PDU Set, etc. In this way, for the PDU transmitted downlink, the target base station can use the relevant information of the PDU Set as the processing basis and perform differentiated processing on different PDU Sets.

[0103] However, in actual applications, the target base station may not be able to identify PDU Set related information. In this case, the UPF network element's process of detecting, matching and marking the PDU Set is invalid, which will lead to a waste of UPF network element computing resources.

[0104] Taking into account that the computing resources of the UPF network element are affected by the target base station's processing capability of PDU Set, the embodiment of the present application generates corresponding session processing instructions based on the target base station's indication of the processing capability of PDU Set, and sends the session processing instructions to the UPF network element, so as to dynamically instruct the UPF network element to divide the PDU processing operations for the downlink PDU, thereby improving the effectiveness of the UPF network element's downlink PDU processing operations and avoiding waste of UPF network element computing resources.

[0105] It should be noted that the beneficial effects brought about by the embodiments of the present application or the technical problems solved are not limited to this one, but may also include other implicit or related problems. For details, please refer to the description of the following embodiments.

[0106] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0107] In one embodiment, Figure 2 A flow chart of a session processing method is shown in FIG. Figure 1 Take the SMF network element in the example as an example. Figure 2As shown, the method comprises the following steps:

[0108] S201: Receive a processing capability indication of a target base station for a PDU Set.

[0109] Among them, PDU refers to the most basic data transmission unit in the data transmission process, also known as a data packet.

[0110] During the downlink transmission of PDU, multiple PDUs jointly carry an information unit to realize data transmission. In the embodiment of the present application, the UPF network element detects, matches and marks the downlink PDU, identifies and marks multiple associated downlink PDUs carrying an information unit as a PDU Set, and adds relevant information of the PDU Set to the GTP-U header of each downlink PDU, such as the sequence number of the PDU Set, the indication of the end PDU of the PDU Set, the signal of the PDU in the PDU Set, the size of the PDU Set (in bytes), and the importance of the PDU Set.

[0111] In actual data transmission, different PDU Sets have different importance and corresponding transmission processing requirements. In this case, the target base station can identify PDU Set related information to determine whether the target base station supports QoS processing of PDU Set, improve network performance and reliability, and then determine whether to perform differentiated processing on downlink PDUs. Among them, QoS processing of PDU Set includes a series of QoS processing actions such as determining the priority of applications and services in the network, configuring network devices to meet QoS information, monitoring network traffic and performance, and optimizing QoS configuration.

[0112] The target base station may be a base station during the process of the UE first establishing a PDU session, or may be a base station after the UE switches when the UE switches base stations. The embodiment of the present application does not limit the scenario of how the UE switches to the target base station, for example, the UE switches from the source base station to the target base station via the Xn interface, or the UE switches from the source base station to the target base station via the N2 interface.

[0113] Taking video transmission including multiple information units as an example, the data transmission path for PDU downlink transmission through the target base station can be described as: the UPF network element receives the downlink PDU in the data network, and then the UPF network element performs PDUSet identification and marking processing operations on the downlink PDU, and transmits the marked downlink PDU to the target base station. Finally, the target base station identifies the PDU Set related information carried by the downlink PDU and determines whether the target base station supports QoS processing of PDU Set.

[0114] If the target base station supports QoS processing of PDU Set, PDU Set granularity processing is performed on the downlink PDU and the PDU is transmitted to the terminal; if the target base station does not support QoS processing of PDU Set, PDU Set granularity processing cannot be performed on the downlink PDU, but the PDU is not distinguished and transmitted to the terminal.

[0115] It can be seen that during the downlink transmission process, the UPF network element's processing operations of PDU Set identification and marking on the downlink PDU are strongly correlated with whether the target base station can support the QoS processing of PDU Set. The specific description is as follows:

[0116] If the target base station does not support PDU Set-based QoS processing, it will not be possible to perform PDU Set granular processing on the downlink PDU sent by the UPF network element. Based on this, you can choose to activate or deactivate the UPF network element to perform PDUSet identification and marking processing on the downlink PDU.

[0117] If the target base station supports PDU Set-based QoS processing, it can perform PDU Set granular processing on the downlink PDU sent by the UPF network element. Based on this, you can choose to activate or deactivate the UPF network element to perform PDUSet identification and marking processing operations on the downlink PDU.

[0118] Based on this, whether the target base station can support QoS processing based on PDU Set can be used as a basis to flexibly set the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU, so as to improve the effectiveness of the UPF network element's PDU Set identification and marking processing operations on the downlink PDU, and to a certain extent avoid the waste of UPF network element computing resources.

[0119] In the embodiment of the present application, whether the target base station can support QoS processing based on PDU Set is used as the processing capability indication of the target base station for PDU Set, that is, the processing capability indication includes that the target base station supports QoS processing based on PDU Set, or that the target base station supports QoS processing based on PDU Set. It can be understood that in actual applications, the processing capability of the target base station for PDU Set is selective, that is, the processing capability indication is either not to support QoS processing based on PDU Set, or to support QoS processing based on PDU Set.

[0120] It should be noted that during the information transmission process, information is transmitted between the target base station and the UPF through the SMF network element. Specifically, the SMF network element receives the target base station's processing capability indication for the PDU Set, and sends corresponding instructions to the UPF network element based on the processing capability indication.

[0121] Optionally, data can be transmitted between the SMF network element and the target base station through the AMF network element, that is, the SMF network element receives the processing capability indication sent by the target base station through the AMF network element.

[0122] S202, sending a session processing instruction to the UPF network element based on the processing capability indication; the session processing instruction is used to instruct the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0123] According to the target base station's indication of the processing capability of PDU Set, the UPF network element is determined to perform PDU Set identification and marking processing operations on the downlink PDU, and a session processing instruction is generated based on the determination result and sent to the UPF network element to instruct the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU according to the session processing instruction.

[0124] In the embodiment of the present application, the processing capability indication includes two situations: the target base station does not support QoS processing based on PDU Set, and the target base station supports QoS processing based on PDU Set. Correspondingly, the session processing instruction includes two situations: the UPF network element performs PDU Set identification and marking processing operations on the downlink PDU, and the UPF network element does not perform PDU Set identification and marking processing operations on the downlink PDU.

[0125] Moreover, in actual applications, the session processing instruction is selective, that is, the session processing instruction is either that the UPF network element performs the PDU Set identification and marking processing operation on the downlink PDU, or that the UPF network element does not perform the PDU Set identification and marking processing operation on the downlink PDU.

[0126] In addition, in the embodiment of the present application, the processing capability indication and the session processing instruction are in one-to-one correspondence.

[0127] Optionally, if the processing capability indicates that the target base station does not support PDU Set-based QoS processing, the session processing instruction is for the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0128] Optionally, if the processing capability indicates that the target base station does not support PDU Set-based QoS processing, the session processing instruction is that the UPF network element does not perform PDU Set identification and marking processing operations on the downlink PDU.

[0129] Optionally, if the processing capability indicates that the target base station supports QoS processing based on PDU Set, the session processing instruction is for the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0130] Optionally, if the processing capability indicates that the target base station does not support PDU Set-based QoS processing, the session processing instruction is that the UPF network element does not perform PDU Set identification and marking processing operations on the downlink PDU.

[0131] In an embodiment of the present application, by receiving the processing capability indication of the target base station for PDU Set, and sending a session processing instruction to the UPF network element based on the processing capability indication. Among them, the session processing instruction is used to instruct the UPF network element to perform the processing operation of PDU Set identification and marking on the downlink PDU. It is equivalent to evaluating whether the base station is capable of performing session processing on the downlink PDU based on the processing capability indication of the target base station for PDU Set, and sending a session processing instruction to the UPF network element based on the session processing evaluation result, so as to flexibly and dynamically set the UPF network element to perform the processing operation of PDU Set identification and marking on the downlink PDU, thereby improving the effectiveness of the UPF network element's downlink PDU processing operation and largely avoiding the waste of UPF network element computing resources.

[0132] In the process of sending the session processing instruction to the UPF network element based on the processing capability indication, different processing capability indications correspond to different session processing instructions. The specific process of determining different session processing instructions based on different processing indications is described below.

[0133] In one embodiment, the processing capability indication includes that the target base station does not support QoS processing based on PDU Set, or that the target base station supports QoS processing based on PDU Set.

[0134] Among them, the target base station does not support PDU Set-based QoS processing is determined based on the fact that the target base station cannot identify PDU Set-related information, and the target base station supports PDU Set-based QoS processing is determined based on the fact that the target base station can identify PDU Set-related information.

[0135] It is understandable that in actual applications, the processing capability of the target base station for PDU Set is selective, that is, the processing capability indication is either not supporting QoS processing based on PDU Set or supporting QoS processing based on PDU Set.

[0136] In one embodiment, when the target base station does not support PDU Set-based QoS processing, the session processing instruction is used to deactivate the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0137] The target base station does not support QoS processing based on PDU Set, which means that the target base station cannot identify PDU Set related information. Then the UPF network element's operation of dividing the downlink PDU into PDU Sets is invalid, which will occupy UPF computing resources. In this case, the SMF network element can send a session processing instruction to the UPF network element to deactivate the UPF network element's processing operations of PDU Set identification and marking for the downlink PDU, so as to avoid the waste of UPF computing resources to a certain extent.

[0138] In another embodiment, when the target base station supports QoS processing based on PDU Set, the session processing instruction is used to activate the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0139] The target base station does not support QoS processing based on PDU Set, which means that the target base station can identify PDU Set related information and support PDU Set granularity processing, which means that the UPF network element's operation of dividing the downlink PDU into PDU Sets is effective. In this case, the SMF network element can send a session processing instruction to the UPF network element to instruct the UPF network element to divide the downlink PDU into PDU Sets, so that the target base station can perform differentiated processing on the PDU Set.

[0140] In actual applications, the UE may not have a base station handover, in which case the base station to which the UE belongs is the target base station; or there may be a base station handover, in which case the switched base station is the target base station. In different scenarios, the target base station sends a PDU Set processing capability indication in different ways. The following describes the ways in which the target base station sends a processing capability indication in the above two scenarios.

[0141] (1) In the scenario where the UE does not switch base stations, the target base station can carry the processing capability indication in the PDU session request during the PDU session establishment process and send it to the SMF network element through the AMF network element.

[0142] In one embodiment, the processing capability indication is sent by the target base station when establishing a PDU session.

[0143] Optionally, the processing capability indication is carried by the target base station in the PDU session request and sent via the AMF network element.

[0144] When the UE does not switch base stations, the target base station will carry the processing capability indication of the PDU Set in the PDU session request (N2 PDU Session Request) and send it to the SMF network element through the AMF network element, instructing the SMF network element to generate a session processing instruction based on the processing capability indication of the target base station, and by modifying the N4 session, it can instruct the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0145] In the scenario where the UE does not switch base stations, Figure 3 The interactive diagram of the session processing method is shown in the case where the UE initiates the PDU session establishment process, including the following steps:

[0146] S301. The target base station sends an N2 PDU session request to the AMF network element.

[0147] Among them, the N2 PDU session request carries the PDU Set processing capability indication.

[0148] S302. The AMF network element forwards the processing capability indication to the SMF network element.

[0149] S303. The SMF network element modifies the N4 session based on the processing capability indication of the target base station.

[0150] After the N4 session is modified, the associated network elements in the PDU session establishment process jointly complete the remaining process of the PDU session establishment.

[0151] In an embodiment of the present application, the target base station carries the processing capability indication in the PDU session request and forwards it to the SMF network element through the AMF network element. This transmission method allows the target base station to report the processing capability indication while reducing to a certain extent the waste of resources caused by establishing an additional transmission channel between the target base station and the network element that receives the processing capability indication.

[0152] (2) In the scenario where the UE switches base stations, the target base station can carry the processing capability indication in the base station switching request during the PDU session modification process and send it to the SMF network element through the AMF network element; it can also be carried out during the PDU session modification process.

[0153] In one embodiment, the processing capability indication is sent by the target base station when modifying the PDU session.

[0154] It should be noted that in a 5G network, the process of switching a UE service from a source base station to a target base station includes at least the following two switching scenarios:

[0155] ① There is an Xn connection between the source base station and the target base station. In this case, the UE switches from the source base station to the target base station based on the Xn interface.

[0156] ② There is no Xn connection between the source base station and the target base station. In this case, the UE switches from the source base station to the target base station based on the N2 interface.

[0157] Below, through an embodiment, in a scenario where the UE switches from a source base station to a target base station based on an Xn interface, the transmission process of the processing capability indication is described.

[0158] In one embodiment, the processing capability indication is carried by the target base station in the path switching request, and the path switching request is triggered when the UE moves from the source base station to the target base station through the first interface; the first interface represents the network interface between the target base station and the source base station.

[0159] When there is a network interface (that is, the first interface) between the target base station and the source base station, the UE switches from the source base station to the target base station through the first interface. The target base station triggers a path switching request (N2 Path Switch Request) and carries the switching capability indication in the path switching request, which is forwarded to the SMF network element through the AMF network element. The SMF network element then generates a session processing instruction based on the processing capability indication of the target base station and sends the session processing instruction to the UPF network element to instruct the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0160] In the scenario where the UE moves from the source base station to the target base station through the Xn interface, Figure 4 The interactive diagram of the session processing method when the UE initiates the PDU session modification process includes the following steps:

[0161] S401. The target base station sends an N2 path switching request to the AMF network element.

[0162] The N2 path switching request carries a PDU Set processing capability indication.

[0163] S402. The AMF network element forwards the processing capability indication to the SMF network element.

[0164] S403. The SMF network element modifies the N4 session based on the processing capability indication of the target base station.

[0165] After the N4 session is modified, the associated network elements in the PDU session establishment process jointly complete the remaining process of the PDU session modification.

[0166] In an embodiment of the present application, for a switching scenario in which a UE switches from a source base station to a target base station through an Xn interface, the target base station sends the processing capability indication by carrying it in a path switching request, without the need to establish an additional transmission channel between the target base station and the network element that receives the processing capability indication. This transmission method improves the transmission efficiency of the processing capability indication while avoiding waste of resources in the process of UE switching scenarios.

[0167] It should be understood that different switching scenarios correspond to different transmission methods. As an embodiment parallel to the aforementioned embodiment, another embodiment is used to illustrate the transmission process of the processing capability indication in the scenario where the UE switches from the source base station to the target base station based on the N2 interface.

[0168] In one embodiment, the processing capability indication is carried by the target base station and sent in the switching request confirmation; the switching request confirmation is triggered when the UE moves from the source base station to the target base station through the second interface; the second interface represents the network interface between the target base station and the AMF network element.

[0169] When there is no Xn interface (that is, the first interface) between the target base station and the source base station, the UE switches from the source base station to the target base station through the second interface (N2 interface). The target base station triggers a handover request confirmation (Handover RequestAcknowledge) and carries the handover capability indication in the handover request confirmation, which is forwarded to the SMF network element through the AMF network element. The SMF network element then generates a session processing instruction based on the processing capability indication of the target base station and sends the session processing instruction to the UPF network element to instruct the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0170] In the scenario where the UE moves from the source base station to the target base station via the N2 interface, Figure 5 The interactive diagram of the session processing method when the UE initiates the PDU session modification process includes the following steps:

[0171] S501. The target base station sends a switching request confirmation to the AMF network element.

[0172] The handover request confirmation carries a PDU Set processing capability indication.

[0173] S502. The AMF network element forwards the processing capability indication to the SMF network element.

[0174] S503. The SMF network element modifies the N4 session based on the processing capability indication of the target base station.

[0175] After the N4 session is modified, the associated network elements in the PDU session establishment process jointly complete the remaining process of the PDU session modification.

[0176] In an embodiment of the present application, for a switching scenario in which a UE switches from a source base station to a target base station through an N2 interface, the target base station sends the processing capability indication by carrying it in a switching request confirmation. There is no need to establish an additional transmission channel between the target base station and the network element that receives the processing capability indication. This transmission method improves the transmission efficiency of the processing capability indication while avoiding waste of resources in the process of UE switching scenarios.

[0177] When the UE switches from the source base station to the target base station, and the target base station sends the processing capability indication to the SMF network element through the AMF network element, the SMF network element will send a session processing instruction to the UPF network element according to the processing capability indication to instruct the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU. Furthermore, if the UPF network element receives the session processing instruction, it can send a response message to the session processing instruction to the SMF network element. Based on this, the session processing interaction process between the SMF network element and the UPF network element is described below through an embodiment.

[0178] In one embodiment, the method further includes: receiving a response message to the session processing instruction sent by the UPF network element.

[0179] Optionally, the response message to the session processing instruction may be that the UPF network element receives the session processing instruction.

[0180] Optionally, the response message of the session processing instruction may be that the UPF network element receives the session processing instruction and performs PDU Set identification and marking processing operations on the downlink PDU according to the session processing instruction.

[0181] When the SMF network element receives a response message to the session processing instruction sent by the UPF network element, the SMF network element can send the response message to other network elements for downlink transmission through the AMF network element to complete the remaining process of establishing the PDU session.

[0182] In an embodiment of the present application, when a session processing instruction is sent to the UPF network element, a response message sent by the UPF network element is received. Such an interactive method is beneficial for the SMF network element to obtain the processing status of the UPF network element in a timely manner, thereby quickly completing the remaining process of establishing the PDU session.

[0183] Before receiving the processing capability indication of the target base station for the PDU Set, it is necessary to send network quality of service (QoS) information to the target base station to instruct the target base station to allocate and schedule network resources based on the QoS information, thereby providing different service qualities for different data flows. Based on this, the process of receiving QoS information by the target base station is described below through an embodiment.

[0184] In one embodiment, before receiving the processing capability indication of the target base station for the PDU Set sent by the AMF network element, the method further includes:

[0185] The QoS information is sent to the target base station through the AMF network element; the QoS information carries the QoS parameters of the PDU Set.

[0186] The SMF network element sends QoS information to the target base station through the AMF network element to improve the network service quality. The QoS information in the embodiment of the present application includes QoS parameters of the PDU Set, such as the bandwidth of the transmission PDU Set, the delay of the transmission PDU Set, the packet loss rate of the PDU Set, and the delay jitter.

[0187] When the target base station receives the QoS information, the target base station first identifies the PDU Set in the QoS information and generates a processing capability indication according to the identification result.

[0188] Exemplarily, if the target base station can identify PDU Set related information, it will generate a processing capability indication that the target base station supports QoS processing based on PDU Set, and send the processing capability indication to the SMF network element. In this case, the SMF network element sends a session processing instruction to the UPF network element based on the processing capability indication to activate the UPF network element to perform PDUSet identification and marking processing operations on the downlink PDU. In this way, the target base station can differentially allocate network bandwidth based on the identification results and realize granular processing of PDU Set.

[0189] Exemplarily, if the target base station cannot identify PDU Set related information, a processing capability indication that the target base station does not support PDU Set-based QoS processing will be generated, and the processing capability indication will be sent to the SMF network element. In this case, the SMF network element sends a session processing instruction to the UPF network element based on the processing capability indication to instruct the UPF network element to prohibit the execution of PDU Set identification and marking processing operations on the downlink PDU, which reduces the waste of computing resources of the UPF network element to a certain extent.

[0190] Compared with the current mechanism in which there is no target base station reporting the processing capability indication for PDU Set, the embodiment of the present application, when the QoS information includes the QoS parameters of PDU Set, obtains the processing capability indication of the target base station for PDU Set according to whether the target base station can identify PDU Set. The method is reliable and easy to implement, and can improve the accuracy of the processing capability indication. On the basis of accurate and reliable processing capability indication, the UPF network element is flexibly and dynamically configured to perform PDU Set identification and marking processing operations on the downlink PDU, thereby improving the effectiveness of the processing operation of the UPF network element.

[0191] The above is an explanation of the relevant embodiments with the SMF network element as the execution subject. On this basis, the embodiments of the present application also provide embodiments corresponding to the above process with the target base station, AMF network element and UPF network element as the execution subject. Since all the implementation principles and detailed processes of the following embodiments with the target base station, AMF network element and UPF network element as the execution subject, as well as the technical effects that can be achieved are the same as those of the above embodiments with the SMF network element as the execution subject, therefore, for the sake of brevity and clarity, the following embodiments will not be repeated one by one, and the implementation process and implementation effect of each embodiment can refer to the description of the aforementioned embodiments.

[0192] Next, an embodiment of the session processing method is described with the target base station as the execution subject.

[0193] In one embodiment, Figure 6 As shown, a session processing method is provided, which is applied to a target base station, and the method includes:

[0194] S601, sends a PDU Set processing capability indication to the SMF network element through the AMF network element to instruct the SMF network element to send a session processing instruction to the UPF network element; the session processing instruction is used to instruct the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0195] The target base station in this embodiment refers to the base station after the UE switches when the UE performs base station switching. When the target base station determines the processing capability indication for the PDU Set, the processing capability indication is sent to the UPF network element through the AMF network element to instruct the SMF network element to send a session processing instruction to the UPF network element, and set the UPF network element to perform the PDU Set identification and marking processing operation on the downlink PDU.

[0196] It should be noted that the session processing instruction is determined by the SMF network element based on the processing capability indication. The process from processing capability indication to session processing instruction is as follows: the target base station forwards the processing capability indication to the SMF network element through the AMF network element. When the SMF network element receives the processing capability indication sent by the AMF network element, the SMF network element sends the session processing instruction to the UPF network element.

[0197] In the embodiment of the present application, the processing capability indication for PDU Set is sent to the SMF network element by the AMF network element, so as to instruct the SMF network element to send the processing capability indication to the UPF network element. Since the processing capability indication is reported by the target base station, it can truly and most accurately reflect the actual processing capability of the target base station for PDU Set. Then, on this basis, the processing capability indication forwarded by the AMF network element to the SMF network element is also accurate and objective. Furthermore, the SMF network element sends a session processing instruction to the UPF network element based on the processing capability indication to instruct the UPF network element to perform the processing operation of PDU Set identification and marking on the downlink PDU, which is also the most appropriate for the actual processing capability of the target base station for PDU Set, and can maximize the effectiveness of the UPF network element performing the processing operation of PDU Set identification and marking on the downlink PDU, and to a certain extent avoid the waste of computing resources of the UPF network element.

[0198] In one embodiment, the processing capability indication includes that the target base station does not support PDU Set-based QoS processing, or that the target base station supports PDU Set-based QoS processing.

[0199] In one embodiment, when the target base station does not support PDU Set-based QoS processing, the session processing instruction is used to deactivate the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0200] In one embodiment, when the target base station supports QoS processing based on PDU Set, the session processing instruction is used to activate the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0201] In one embodiment, the processing capability indication is sent by the target base station when establishing a PDU session.

[0202] In one embodiment, the method further comprises:

[0203] The processing capability indication is carried in the PDU session request and sent to the SMF network element via the AMF network element.

[0204] In one embodiment, the processing capability indication is sent by the target base station when modifying the PDU session.

[0205] In one embodiment, the method further comprises:

[0206] The processing capability indication is carried in the path switching request and sent to the SMF network element through the AMF network element; the path switching request is triggered when the UE moves from the source base station to the target base station through the first interface; the first interface represents the network interface between the target base station and the source base station.

[0207] In one embodiment, the method further comprises:

[0208] The processing capability indication is carried in the switching request confirmation and sent to the SMF network element through the AMF network element; the switching request confirmation is triggered when the UE moves from the source base station to the target base station through the second interface; the second interface represents the network interface between the target base station and the AMF network element.

[0209] In one embodiment, Figure 7 As shown, before sending the processing capability indication of the PDU Set to the AMF network element, the method also includes:

[0210] S701, receive QoS information sent by the SMF network element through the AMF network element; the QoS information includes QoS parameters of the PDU Set.

[0211] S702, sending a processing capability indication for the PDU Set to the AMF network element based on the QoS information.

[0212] In one embodiment, the method further comprises:

[0213] According to the QoS parameters of the PDU Set, air interface resources are established with the UE; the air interface resources are used for data transmission with the UE.

[0214] Below, an embodiment of the session processing method is described with the AMF network element as the execution entity.

[0215] In one embodiment, Figure 8 As shown, a session processing method is provided, which is applied to an AMF network element, and the method includes:

[0216] S801, receiving a processing capability indication of a target base station for a PDU Set sent by a target base station;

[0217] S802, send a processing capability indication to the SMF network element to instruct the SMF network element to send a session processing instruction to the UPF network element; the session processing instruction is used to instruct the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0218] As the core network element for information transmission between the target base station and the SMF network element, the AMF network element is responsible for receiving the processing capability indication sent by the target base station and forwarding the received processing capability indication to the SMF network element.

[0219] In addition, in the process of the AMF network element forwarding the processing capability indication to the SMF network element in the embodiment of the present application, the SMF network element will also instruct the SMF network element to send a session processing instruction to the UPF network element based on the processing capability indication, so that the SMF network element can flexibly configure the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0220] In the embodiment of the present application, by receiving the processing capability indication of the target base station for the PDU Set sent by the target base station and forwarding it to the SMF network element, the authenticity and accuracy of the processing capability indication received by the SMF network element are ensured. In addition, while forwarding the processing capability indication to the SMF network element, the SMF network element is also instructed to send a session processing instruction to the UPF network element based on the processing capability indication, so as to flexibly configure the UPF network element to perform the processing operations of PDU Set identification and marking on the downlink PDU, so as to improve the effectiveness of the UPF network element processing operation and avoid the waste of computing resources of the UPF network element.

[0221] In one embodiment, the processing capability indication includes that the target base station does not support PDU Set-based QoS processing, or that the target base station supports PDU Set-based QoS processing.

[0222] In one embodiment, when the target base station does not support PDU Set-based QoS processing, the session processing instruction is used to deactivate the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0223] In one embodiment, when the target base station supports QoS processing based on PDU Set, the session processing instruction is used to activate the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0224] In one embodiment, the processing capability indication is sent by the target base station when establishing a PDU session.

[0225] In one embodiment, the processing capability indication is carried by the target base station in the PDU session request and sent via the AMF network element.

[0226] In one embodiment, the processing capability indication is sent by the target base station when modifying the PDU session.

[0227] In one embodiment, the processing capability indication is carried by the target base station in the path switching request, and the path switching request is triggered when the UE moves from the source base station to the target base station through the first interface; the first interface represents the network interface between the target base station and the source base station.

[0228] In one embodiment, the processing capability indication is carried by the target base station and sent in the switching request confirmation; the switching request confirmation is triggered when the UE moves from the source base station to the target base station through the second interface; the second interface represents the network interface between the target base station and the AMF network element.

[0229] In one embodiment, before sending the processing capability indication of the target base station for the PDU Set to the SMF network element, the method further includes:

[0230] In response to the QoS information sent by the SMF network element, QoS information is sent to the target base station; the QoS information includes QoS parameters of the PDU Set.

[0231] Next, an embodiment of the session processing method is described with the UPF network element as the execution entity.

[0232] In one embodiment, Fig. 9 As shown, a session processing method is provided, which is applied to a UPF network element, and the method includes:

[0233] S901, receive the session processing instruction sent by the SMF network element; the session processing instruction is sent by the SMF network element based on the processing capability indication of the target base station for the PDU Set, and the session processing instruction is used to instruct the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0234] When receiving the session processing instruction sent by the SMF network element, the PDU Set identification and marking processing operations are performed on the downlink PDU according to the processing operation instructions in the session processing instruction.

[0235] It should be noted that the session processing instruction is sent by the SMF network element based on the processing capability indication of the target base station for the PDU Set, so that the session processing instruction can be as close as possible to the actual processing capability of the target base station. Therefore, the processing operation indication in the session processing instruction sent by the SMF network element to the UPF network element can also correspond to the actual processing capability of the target base station.

[0236] In an embodiment of the present application, a session processing instruction is sent by a receiving SMF network element based on the processing capability indication of the target base station for PDU Set. The session processing instruction is used to instruct the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU. This is equivalent to taking into account the differences in the processing capability of the target base station for PDU Set in the process of determining the session processing instruction, and flexibly configuring the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU according to the different processing capability indications of the target base station, so as to avoid wasting computing resources of the UPF network element.

[0237] In one embodiment, the processing capability indication includes that the target base station does not support PDU Set-based QoS processing, or that the target base station supports PDU Set-based QoS processing.

[0238] In one embodiment, when the target base station does not support PDU Set-based QoS processing, the session processing instruction is used to deactivate the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0239] In one embodiment, when the target base station supports QoS processing based on PDU Set, the session processing instruction is used to activate the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0240] In one embodiment, when a PDU session is established, Fig.10 It is a signaling interaction flow chart of a session processing method, involving SMF network elements, target base stations, AMF network elements and UPF network elements, such as Fig.10 As shown, based on the UE initiating the PDU session establishment process (for details, see steps 1 to 10 in 4.3.2 of TS23.502), the method includes the following steps:

[0241] S1001, the SMF network element sends QoS information to the target base station through the AMF, wherein the QoS information includes QoS parameters of the PDU Set.

[0242] S1002. The AMF network element creates and sends an N2 message to the target base station based on the QoS information.

[0243] S1003: The target base station establishes required resources (eg, air interface resources) from the target base station to the UE to ensure that the target base station and the UE can communicate.

[0244] S1004. The target base station replies with PDU session information to the AMF network element, including an indication of the target base station's processing capability for the PDU Set.

[0245] S1005. The AMF network element forwards the processing capability indication received from the target base station to the SMF network element.

[0246] S1006. The SMF network element modifies the N4 session according to the received processing capability indication.

[0247] The processing capability indication includes that the target base station does not support QoS processing based on PDU Set, or that the target base station supports QoS processing based on PDU Set.

[0248] If the processing capability indicates that the target base station does not support PDU Set-based QoS processing, the UPF network element is instructed to deactivate the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0249] If the processing capability indicates that the target base station supports QoS processing based on PDU Set, the UPF network element is instructed to activate the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0250] The UPF network element sends a response message to the SMF network element for the session processing instruction and continues to complete the remaining process of establishing the PDU session.

[0251] It should be emphasized that some processes require multiple message interactions, which is a standard process of the 3GPP protocol and is not described in detail here.

[0252] In an embodiment of the present application, by receiving the processing capability indication of the target base station for PDU Set, and sending a session processing instruction to the UPF network element based on the processing capability indication. The session processing instruction is used to instruct the UPF network element to perform the processing operation of PDU Set identification and marking on the downlink PDU. It is equivalent to evaluating whether the base station is capable of performing session processing on the downlink PDU based on the processing capability indication of the target base station for PDU Set, and sending a session processing instruction to the UPF network element based on the session processing evaluation result, so as to flexibly and dynamically set the UPF network element to perform the processing operation of PDU Set identification and marking on the downlink PDU, thereby improving the effectiveness of the UPF network element's downlink PDU processing operation and avoiding the waste of UPF network element computing resources.

[0253] It should be understood that, although the steps in the flowcharts involved in the above embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above embodiments may include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0254] In one embodiment, Fig.11 As shown, a session processing device is provided, including: a first receiving module 1101 and a first sending module 1102, wherein:

[0255] The first receiving module 1101 is used to receive a processing capability indication of a target base station for a PDU Set;

[0256] The first sending module 1102 is used to send a session processing instruction to the user plane function UPF network element based on the processing capability indication; the session processing instruction is used to instruct the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0257] In one embodiment, the processing capability indication includes that the target base station does not support PDU Set-based QoS processing, or that the target base station supports PDU Set-based QoS processing.

[0258] In one embodiment, when the target base station does not support PDU Set-based QoS processing, the session processing instruction is used to deactivate the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0259] In one embodiment, when the target base station supports QoS processing based on PDU Set, the session processing instruction is used to activate the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0260] In one embodiment, the processing capability indication is sent by the target base station when establishing a PDU session.

[0261] In one embodiment, the processing capability indication is carried by the target base station in the PDU session request and sent via the AMF network element.

[0262] In one embodiment, the processing capability indication is sent by the target base station when modifying the PDU session.

[0263] In one embodiment, the processing capability indication is carried by the target base station in the path switching request, and the path switching request is triggered when the UE moves from the source base station to the target base station through the first interface; the first interface represents the network interface between the target base station and the source base station.

[0264] In one embodiment, the processing capability indication is carried by the target base station and sent in the switching request confirmation; the switching request confirmation is triggered when the UE moves from the source base station to the target base station through the second interface; the second interface represents the network interface between the target base station and the AMF network element.

[0265] In one embodiment, the session processing device also includes a response receiving module for receiving a response message to the session processing instruction sent by the UPF network element.

[0266] In one embodiment, the session processing device also includes an information sending module, which is used to send service quality QoS information to the target base station through the AMF network element; the QoS information carries the QoS parameters of the PDU Set.

[0267] In one embodiment, Fig.12 As shown, a session processing device is provided, including: a second sending module 1201, used to send a processing capability indication for PDU Set to the SMF network element through the AMF network element, so as to instruct the SMF network element to send a session processing instruction to the UPF network element; the session processing instruction is used to instruct the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0268] In one embodiment, the processing capability indication includes that the target base station does not support PDU Set-based QoS processing, or that the target base station supports PDU Set-based QoS processing.

[0269] In one embodiment, when the target base station does not support PDU Set-based QoS processing, the session processing instruction is used to deactivate the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0270] In one embodiment, when the target base station supports QoS processing based on PDU Set, the session processing instruction is used to activate the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0271] In one embodiment, the processing capability indication is sent by the target base station when establishing a PDU session.

[0272] In one embodiment, the method further comprises:

[0273] The processing capability indication is carried in the PDU session request and sent to the SMF network element via the AMF network element.

[0274] In one embodiment, the processing capability indication is sent by the target base station when modifying the PDU session.

[0275] In one embodiment, the session processing device also includes a request sending module, which is used to carry the processing capability indication in the path switching request and send it to the SMF network element through the AMF network element; the path switching request is triggered when the UE moves from the source base station to the target base station through the first interface; the first interface represents the network interface between the target base station and the source base station.

[0276] In one embodiment, the session processing device also includes a confirmation sending module, which is used to carry the processing capability indication in the switching request confirmation and send it to the SMF network element through the AMF network element; the switching request confirmation is triggered when the UE moves from the source base station to the target base station through the second interface; the second interface represents the network interface between the target base station and the AMF network element.

[0277] In one embodiment, the session processing device further includes a QoS information receiving module and a capability indication sending module, wherein:

[0278] QoS information receiving module, used to receive QoS information sent by SMF network element through AMF network element; QoS information includes QoS parameters of PDU Set;

[0279] The capability indication sending module is used to send the processing capability indication of PDU Set to the AMF network element according to the QoS information.

[0280] In one embodiment, the session processing device further includes a resource establishment module, which is used to establish air interface resources with the UE according to the QoS parameters of the PDU Set; the air interface resources are used for data transmission with the UE.

[0281] In one embodiment, Fig.13 As shown, a session processing device is provided, including: a second receiving module 1301 and a third sending module 1302, wherein:

[0282] The second receiving module 1301 is used to receive a processing capability indication of the target base station for the PDU Set sent by the target base station;

[0283] The third sending module 1302 is used to send a processing capability indication to the SMF network element to instruct the SMF network element to send a session processing instruction to the UPF network element; the session processing instruction is used to instruct the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0284] In one embodiment, the processing capability indication includes that the target base station does not support PDU Set-based QoS processing, or that the target base station supports PDU Set-based QoS processing.

[0285] In one embodiment, when the target base station does not support PDU Set-based QoS processing, the session processing instruction is used to deactivate the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0286] In one embodiment, when the target base station supports QoS processing based on PDU Set, the session processing instruction is used to activate the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0287] In one embodiment, the processing capability indication is sent by the target base station when establishing a PDU session.

[0288] In one embodiment, the processing capability indication is carried by the target base station in the PDU session request and sent via the AMF network element.

[0289] In one embodiment, the processing capability indication is sent by the target base station when modifying the PDU session.

[0290] In one embodiment, the processing capability indication is carried by the target base station in the path switching request, and the path switching request is triggered when the UE moves from the source base station to the target base station through the first interface; the first interface represents the network interface between the target base station and the source base station.

[0291] In one embodiment, the processing capability indication is carried by the target base station and sent in the switching request confirmation; the switching request confirmation is triggered when the UE moves from the source base station to the target base station through the second interface; the second interface represents the network interface between the target base station and the AMF network element.

[0292] In one embodiment, the session processing device also includes an information forwarding module, which is used to send QoS information to the target base station in response to the QoS information sent by the SMF network element; the QoS information includes QoS parameters of the PDU Set.

[0293] In one embodiment, Fig.14 As shown, a session processing device is provided, including: a third receiving module 1401, used to receive a session processing instruction sent by an SMF network element; the session processing instruction is sent by the SMF network element based on the processing capability indication of the target base station for PDUSet, and the session processing instruction is used to instruct the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0294] In one embodiment, the processing capability indication includes that the target base station does not support PDU Set-based QoS processing, or that the target base station supports PDU Set-based QoS processing.

[0295] In one embodiment, when the target base station does not support PDU Set-based QoS processing, the session processing instruction is used to deactivate the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0296] In one embodiment, when the target base station supports QoS processing based on PDU Set, the session processing instruction is used to activate the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0297] For the specific definition of the session processing device, please refer to the definition of the session processing method above, which will not be repeated here. Each module in the above session processing device can be implemented in whole or in part by software, hardware and a combination thereof. Each of the above modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to each of the above modules.

[0298] Fig.15 A schematic diagram of the structure of a communication device provided in an embodiment of the present application. The communication device 1500 may include a receiver 1501, a memory 1502, a processor 1503, at least one communication bus 1504 and a transmitter 1505. The communication bus 1504 is used to realize the communication connection between the components. The memory 1502 may include a high-speed RAM memory, and may also include a non-volatile storage NVM, such as at least one disk storage. Various programs may be stored in the memory 1502 to complete various processing functions and implement the method steps of this embodiment. In this embodiment, the transmitter 1505 may be a radio frequency processing module or a baseband processing module in an access network device, and the receiver 1501 may also be a radio frequency processing module or a baseband processing module in an access network device. The transmitter 1505 and the receiver 1501 can be integrated together to realize a transceiver, and the transmitter 1505 and the receiver 1501 can be coupled to the processor 1503, which can realize the action of receiving or sending under the instruction or control of the processor 1503.

[0299] It can be understood that the memory 1502 in the embodiment of the present invention can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM) and direct RAM bus random access memory (DRRAM). The memory 1502 of the system and method described in the embodiments of the present invention is intended to include, but is not limited to, these and any other suitable types of memory.

[0300] In some implementations, the memory 1502 stores the following elements, executable modules or data structures, or their subsets, or their extensions: operating system 1502a. The operating system 1502a includes various system programs, such as a framework layer, a core library layer, a driver layer, etc., which are used to implement various basic services and process hardware-based tasks.

[0301] In an embodiment of the present application, by calling the program or instructions stored in the memory 1502, the receiver is used to receive the processing capability indication of the target base station for the PDU Set; the transmitter is used to send a session processing instruction to the user plane function UPF network element based on the processing capability indication; the session processing instruction is used to instruct the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0302] It is to be understood that the embodiments described in the embodiments of the present invention may be implemented by hardware, software, firmware, middleware, microcode or a combination thereof. For hardware implementation, the processing unit may be implemented in one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSP devices, DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), general purpose processors, controllers, microcontrollers, microprocessors, other electronic units for performing the above functions of the present application or a combination thereof.

[0303] For software implementation, the above-mentioned techniques of the embodiments of the present invention can be implemented by modules (such as procedures, functions, etc.) that perform the above-mentioned functions of the embodiments of the present invention. The software code can be stored in a memory and executed by the processor 1501. The memory can be implemented in the processor 1501 or outside the processor 1501.

[0304] In one embodiment, the processing capability indication includes that the target base station does not support PDU Set-based QoS processing, or that the target base station supports PDU Set-based QoS processing.

[0305] In one embodiment, when the target base station does not support PDU Set-based QoS processing, the session processing instruction is used to deactivate the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0306] In one embodiment, when the target base station supports QoS processing based on PDU Set, the session processing instruction is used to activate the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0307] In one embodiment, the processing capability indication is sent by the target base station when establishing a PDU session.

[0308] In one embodiment, the processing capability indication is carried by the target base station in the PDU session request and sent via the AMF network element.

[0309] In one embodiment, the processing capability indication is sent by the target base station when modifying the PDU session.

[0310] In one embodiment, the processing capability indication is carried by the target base station in the path switching request, and the path switching request is triggered when the UE moves from the source base station to the target base station through the first interface; the first interface represents the network interface between the target base station and the source base station.

[0311] In one embodiment, the processing capability indication is carried by the target base station and sent in the switching request confirmation; the switching request confirmation is triggered when the UE moves from the source base station to the target base station through the second interface; the second interface represents the network interface between the target base station and the AMF network element.

[0312] In one embodiment, the receiver is also used to receive a response message to the session processing instruction sent by the UPF network element.

[0313] In one embodiment, the transmitter is also used to send quality of service QoS information to the target base station through the AMF network element; the QoS information carries the QoS parameters of the PDU Set.

[0314] In one embodiment, the receiver is also used to receive a processing capability indication sent by the target base station through an AMF network element.

[0315] Fig.16 A schematic diagram of the structure of an access network device provided in an embodiment of the present application. The access network device may include a receiver 1601, a memory 1602, a processor 1603, at least one communication bus 1604 and a transmitter 1605. The communication bus 1604 is used to realize the communication connection between the components. The memory 1602 may include a high-speed RAM memory, and may also include a non-volatile storage NVM, such as at least one disk memory. Various programs may be stored in the memory 1602 to complete various processing functions and implement the method steps of this embodiment. In this embodiment, the transmitter 1605 may be a radio frequency processing module or a baseband processing module in the access network device, and the receiver 1601 may also be a radio frequency processing module or a baseband processing module in the access network device. The transmitter 1605 and the receiver 1601 can be integrated together to realize a transceiver, and the transmitter 1605 and the receiver 1601 can be coupled to the processor 1603, which can realize the receiving or sending action under the instruction or control of the processor 1603.

[0316] In this embodiment, the transmitter 1605 is used to send a processing capability indication for the PDU Set to the SMF network element through the AMF network element, so as to instruct the SMF network element to send a session processing instruction to the UPF network element; the session processing instruction is used to instruct the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0317] In one embodiment, the processing capability indication includes that the target base station does not support PDU Set-based QoS processing, or that the target base station supports PDU Set-based QoS processing.

[0318] In one embodiment, when the target base station does not support PDU Set-based QoS processing, the session processing instruction is used to deactivate the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0319] In one embodiment, when the target base station supports QoS processing based on PDU Set, the session processing instruction is used to activate the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0320] In one embodiment, the processing capability indication is sent by the target base station when establishing a PDU session.

[0321] In one embodiment, the transmitter 1605 is also used to carry the processing capability indication in the PDU session request and send it to the SMF network element via the AMF network element.

[0322] In one embodiment, the processing capability indication is sent by the target base station when modifying the PDU session.

[0323] In one embodiment, the transmitter 1605 is also used to carry the processing capability indication in the path switching request and send it to the SMF network element through the AMF network element; the path switching request is triggered when the UE moves from the source base station to the target base station through the first interface; the first interface represents the network interface between the target base station and the source base station.

[0324] In one embodiment, the transmitter 1605 is also used to carry the processing capability indication in the handover request confirmation and send it to the SMF network element through the AMF network element; the handover request confirmation is triggered when the UE moves from the source base station to the target base station through the second interface; the second interface represents the network interface between the target base station and the AMF network element.

[0325] In one embodiment, the receiver 1601 is further used for QoS information sent by the SMF network element through the AMF network element; the QoS information includes QoS parameters of the PDU Set;

[0326] The transmitter 1605 is also used to send a processing capability indication for the PDU Set to the AMF network element according to the QoS information.

[0327] In one embodiment, the processor 1603 is configured to establish air interface resources with the UE according to the QoS parameters of the PDU Set; the air interface resources are used for data transmission with the UE.

[0328] Fig.17 A schematic diagram of the structure of an access network device provided in an embodiment of the present application. The access network device may include a receiver 1701, a memory 1702, a processor 1703, at least one communication bus 1704 and a transmitter 1705. The communication bus 1704 is used to realize the communication connection between the components. The memory 1702 may include a high-speed RAM memory, and may also include a non-volatile storage NVM, such as at least one disk memory. Various programs may be stored in the memory 1702 to complete various processing functions and implement the method steps of this embodiment. In this embodiment, the transmitter 1705 may be a radio frequency processing module or a baseband processing module in the access network device, and the receiver 1701 may also be a radio frequency processing module or a baseband processing module in the access network device. The transmitter 1705 and the receiver 1701 can be integrated together to realize a transceiver, and the transmitter 1705 and the receiver 1701 can be coupled to the processor 1703, which can realize the receiving or sending action under the instruction or control of the processor 1703.

[0329] In this embodiment, the receiver 1701 is used to receive an indication of the processing capability of the target base station for the PDU Set sent by the target base station;

[0330] Transmitter 1705 is used to send a processing capability indication to the SMF network element to instruct the SMF network element to send a session processing instruction to the UPF network element; the session processing instruction is used to instruct the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0331] In one embodiment, the processing capability indication includes that the target base station does not support PDU Set-based QoS processing, or that the target base station supports PDU Set-based QoS processing.

[0332] In one embodiment, when the target base station does not support PDU Set-based QoS processing, the session processing instruction is used to deactivate the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0333] In one embodiment, when the target base station supports QoS processing based on PDU Set, the session processing instruction is used to activate the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0334] In one embodiment, the processing capability indication is sent by the target base station when establishing a PDU session.

[0335] In one embodiment, the processing capability indication is carried by the target base station in the PDU session request and sent via the AMF network element.

[0336] In one embodiment, the processing capability indication is sent by the target base station when modifying the PDU session.

[0337] In one embodiment, the processing capability indication is carried by the target base station in the path switching request, and the path switching request is triggered when the user terminal UE moves from the source base station to the target base station through the first interface; the first interface represents the network interface between the target base station and the source base station.

[0338] In one embodiment, the processing capability indication is carried by the target base station and sent in the switching request confirmation; the switching request confirmation is triggered when the UE moves from the source base station to the target base station through the second interface; the second interface represents the network interface between the target base station and the AMF network element.

[0339] In one embodiment, the transmitter 1705 is further used to send QoS information to the target base station in response to the QoS information sent by the SMF network element; the QoS information includes QoS parameters of the PDU Set.

[0340] Fig.18 A schematic diagram of the structure of an access network device provided in an embodiment of the present application. The access network device may include a receiver 1801, a memory 1802, a processor 1803, at least one communication bus 1804 and a transmitter 1805. The communication bus 1804 is used to realize the communication connection between the components. The memory 1802 may include a high-speed RAM memory, and may also include a non-volatile storage NVM, such as at least one disk memory. Various programs may be stored in the memory 1802 to complete various processing functions and implement the method steps of this embodiment. In this embodiment, the transmitter 1805 may be a radio frequency processing module or a baseband processing module in the access network device, and the receiver 1801 may also be a radio frequency processing module or a baseband processing module in the access network device. The transmitter 1805 and the receiver 1801 can be integrated together to realize a transceiver, and the transmitter 1805 and the receiver 1801 can be coupled to the processor 1803, which can realize the receiving or sending action under the instruction or control of the processor 1803.

[0341] In this embodiment, the receiver 1801 is used to receive a session processing instruction sent by the SMF network element; the session processing instruction is sent by the SMF network element based on the processing capability indication of the target base station for the PDU Set, and the session processing instruction is used to instruct the UPF network element to perform the PDU Set identification and marking processing operation on the downlink PDU.

[0342] In one embodiment, the processing capability indication includes that the target base station does not support PDU Set-based QoS processing, or that the target base station supports PDU Set-based QoS processing.

[0343] In one embodiment, when the target base station does not support PDU Set-based QoS processing, the session processing instruction is used to deactivate the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0344] In one embodiment, when the target base station supports QoS processing based on PDU Set, the session processing instruction is used to activate the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

[0345] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, any method step in each embodiment of the session processing method in the above embodiments is implemented.

[0346] In one embodiment, a computer program product is provided, including a computer program. When the computer program is executed by a processor, any method step in each embodiment of the session processing method in the above embodiments is implemented.

[0347] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory may include read-only memory (ROM), magnetic tape, floppy disk, flash memory or optical memory, etc. Volatile memory may include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM).

[0348] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0349] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A session processing method, characterized in that: Applied to a session management function (SMF) network element, the method comprises: receiving an indication of a processing capability of a target base station for a protocol data unit set PDU Set; Based on the processing capability indication, a session processing instruction is sent to the user plane function UPF network element; the session processing instruction is used to instruct the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

2. The method according to claim 1, characterized in that The processing capability indication includes that the target base station does not support quality of service QoS processing based on the PDU Set, or that the target base station supports QoS processing based on the PDU Set.

3. The method according to claim 2, characterized in that In the case that the target base station does not support QoS processing based on the PDU Set, the session processing instruction is used to deactivate the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

4. The method according to claim 2, characterized in that: In the case where the target base station supports QoS processing based on the PDU Set, the session processing instruction is used to activate the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

5. The method according to any one of claims 1 to 4, characterized in that: The processing capability indication is sent by the target base station when establishing a PDU session.

6. The method according to claim 5, characterized in that The processing capability indication is carried by the target base station in the PDU session request and sent through the access mobility management function AMF network element.

7. The method according to any one of claims 1 to 4, characterized in that: The processing capability indication is sent by the target base station when modifying a PDU session.

8. The method according to claim 7, characterized in that The processing capability indication is carried by the target base station in the path switching request and sent; the path switching request is triggered when the user terminal UE moves from the source base station to the target base station through the first interface; The first interface represents a network interface between the target base station and the source base station.

9. The method according to claim 7, characterized in that: The processing capability indication is carried by the target base station and sent in the switching request confirmation; the switching request confirmation is triggered when the UE moves from the source base station to the target base station through the second interface; the second interface represents the network interface between the target base station and the AMF network element.

10. The method according to any one of claims 1 to 4, characterized in that: The method further comprises: Receive a response message to the session processing instruction sent by the UPF network element.

11. The method according to any one of claims 1 to 4, characterized in that: Before receiving the processing capability indication of the target base station for the PDU Set, the method further includes: QoS information is sent to the target base station through the AMF network element; the QoS information carries the QoS parameters of the PDU Set.

12. The method according to claim 1, characterized in that The method further comprises: Receive the processing capability indication sent by the target base station through the AMF network element.

13. A session processing method, characterized in that: Applied to a target base station, the method comprises: The AMF network element sends an indication of the processing capability of the PDU Set to the SMF network element to instruct the SMF network element to send a session processing instruction to the UPF network element; the session processing instruction is used to instruct the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

14. The method according to claim 13, characterized in that The processing capability indication includes that the target base station does not support QoS processing based on the PDU Set, or that the target base station supports QoS processing based on the PDU Set.

15. The method according to claim 14, characterized in that In the case that the target base station does not support QoS processing based on the PDUSet, the session processing instruction is used to deactivate the UPF network element to perform PDUSet identification and marking processing operations on the downlink PDU.

16. The method according to claim 14, characterized in that In the case where the target base station supports QoS processing based on the PDU Set, the session processing instruction is used to activate the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

17. The method according to any one of claims 13 to 16, characterized in that: The processing capability indication is sent by the target base station when establishing a PDU session.

18. The method according to claim 17, characterized in that The method further comprises: The processing capability indication is carried in the PDU session request and sent to the SMF network element via the AMF network element.

19. The method according to any one of claims 13 to 16, characterized in that: The processing capability indication is sent by the target base station when modifying a PDU session.

20. The method according to claim 19, characterized in that The method further comprises: The processing capability indication is carried in a path switching request and sent to the SMF network element through the AMF network element; the path switching request is triggered when the UE moves from the source base station to the target base station through a first interface; the first interface represents a network interface between the target base station and the source base station.

21. The method according to claim 19, characterized in that The method further comprises: The processing capability indication is carried in the switching request confirmation and sent to the SMF network element through the AMF network element; the switching request confirmation is triggered when the UE moves from the source base station to the target base station through the second interface; the second interface represents the network interface between the target base station and the AMF network element.

22. The method according to any one of claims 13 to 16, characterized in that: Before sending the processing capability indication of the PDUSet to the AMF network element, the method further includes: Receiving QoS information sent by the SMF network element through the AMF network element; the QoS information includes QoS parameters of the PDU Set; Send a processing capability indication for the PDU Set to the AMF network element based on the QoS information.

23. The method according to claim 22, characterized in that The method further comprises: According to the QoS parameters of the PDU Set, air interface resources are established with the UE; the air interface resources are used for data transmission with the UE.

24. A session processing method, characterized in that: Applied to an AMF network element, the method comprises: receiving an indication of the processing capability of the target base station for the PDU Set sent by the target base station; The processing capability indication is sent to the SMF network element to instruct the SMF network element to send a session processing instruction to the UPF network element; the session processing instruction is used to instruct the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

25. The method according to claim 24, characterized in that The processing capability indication includes that the target base station does not support QoS processing based on the PDU Set, or that the target base station supports QoS processing based on the PDU Set.

26. The method according to claim 25, characterized in that In the case that the target base station does not support QoS processing based on the PDUSet, the session processing instruction is used to deactivate the UPF network element to perform PDUSet identification and marking processing operations on the downlink PDU.

27. The method according to claim 25, characterized in that In the case where the target base station supports QoS processing based on the PDU Set, the session processing instruction is used to activate the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

28. The method according to any one of claims 24 to 27, characterized in that: The processing capability indication is sent by the target base station when establishing a PDU session.

29. The method according to claim 28, characterized in that The processing capability indication is carried by the target base station in the PDU session request and sent by the AMF network element.

30. The method according to any one of claims 24 to 27, characterized in that: The processing capability indication is sent by the target base station when modifying a PDU session.

31. The method according to claim 30, characterized in that The processing capability indication is carried by the target base station in a path switching request and sent by the target base station, and the path switching request is triggered when the UE moves from the source base station to the target base station through the first interface; The first interface represents a network interface between the target base station and the source base station.

32. The method according to claim 30, characterized in that The processing capability indication is carried by the target base station and sent in the switching request confirmation; the switching request confirmation is triggered when the UE moves from the source base station to the target base station through the second interface; the second interface represents the network interface between the target base station and the AMF network element.

33. The method according to any one of claims 24 to 27, characterized in that: Before sending the processing capability indication of the target base station for the PDU Set to the SMF network element, the method further includes: In response to the QoS information sent by the SMF network element, the QoS information is sent to the target base station; the QoS information includes QoS parameters of the PDU Set.

34. A session processing method, characterized in that: Applied to UPF network elements, including: Receive a session processing instruction sent by an SMF network element; the session processing instruction is sent by the SMF network element based on the processing capability indication of the target base station for the PDU Set, and the session processing instruction is used to instruct the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

35. The method according to claim 34, characterized in that The processing capability indication includes that the target base station does not support QoS processing based on the PDU Set, or that the target base station supports QoS processing based on the PDU Set.

36. The method according to claim 35, characterized in that In the case that the target base station does not support QoS processing based on the PDUSet, the session processing instruction is used to deactivate the UPF network element to perform PDUSet identification and marking processing operations on the downlink PDU.

37. The method according to claim 34, characterized in that In the case where the target base station supports QoS processing based on the PDU Set, the session processing instruction is used to activate the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

38. A conversation processing device, characterized in that: The device comprises: A first receiving module, configured to receive an indication of a processing capability of a target base station for a PDU Set; The first sending module is used to send a session processing instruction to the UPF network element based on the processing capability indication; the session processing instruction is used to instruct the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

39. A conversation processing device, characterized in that: The device comprises: The second sending module is used to send a processing capability indication for PDU Set to the SMF network element through the AMF network element, so as to instruct the SMF network element to send a session processing instruction to the UPF network element; the session processing instruction is used to instruct the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

40. A conversation processing device, characterized in that: The device comprises: A second receiving module, configured to receive an indication of the processing capability of the target base station for the PDU Set sent by the target base station; The third sending module is used to send the processing capability indication to the SMF network element to instruct the SMF network element to send a session processing instruction to the UPF network element; the session processing instruction is used to instruct the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

41. A conversation processing device, characterized in that: The device comprises: The third receiving module is used to receive the session processing instruction sent by the SMF network element; the session processing instruction is sent by the SMF network element based on the processing capability indication of the target base station for the protocol data unit set PDU Set, and the session processing instruction is used to instruct the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

42. A communication device, comprising a receiver and a transmitter, characterized in that: The receiver is used to receive an indication of the processing capability of the target base station for the PDU Set; The transmitter is used to send a session processing instruction to the UPF network element based on the processing capability indication; The session processing instruction is used to instruct the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

43. A communication device, comprising a transmitter, characterized in that: The transmitter is used to send a processing capability indication for PDU Set to the SMF network element through the AMF network element, so as to instruct the SMF network element to send a session processing instruction to the UPF network element; the session processing instruction is used to instruct the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

44. A communication device comprising a receiver and a transmitter, characterized in that: The receiver is configured to receive an indication of the processing capability of the target base station for the PDU Set sent by the target base station; The transmitter is used to send the processing capability indication to the SMF network element to instruct the SMF network element to send a session processing instruction to the UPF network element; The session processing instruction is used to instruct the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

45. A communication device comprising a receiver, characterized in that: The receiver is used to receive a session processing instruction sent by the SMF network element; the session processing instruction is sent by the SMF network element based on the processing capability indication of the target base station for the protocol data unit set PDU Set, and the session processing instruction is used to instruct the UPF network element to perform PDU Set identification and marking processing operations on the downlink PDU.

46. ​​A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 37 are implemented.

47. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 37 are implemented.

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