Information transmission method and device, electronic equipment, storage medium and program product

Abstract

The embodiment of the invention discloses an information transmission method and device, equipment, a storage medium and a program product, and the information transmission method applied to a first network element comprises the steps: obtaining first information from a second network element in a session establishment process or a session modification process, the first information comprises one or more of the following items: a network side time sensitive network converter (NW-TT) port number, a user plane data function (UPF) identifier corresponding to the NW-TT port number, and an NW-TT port load.

Description

Technical Field

[0001] The present application belongs to the field of core networks, and in particular relates to an information transmission method, device, electronic device, storage medium and program product. Background Art

[0002] In the related art, in order to support the Time Sensitive Networking (TSN) function, the 5th Generation Mobile Communication Technology (5G) network is composed of a "5GS bridge" consisting of a device-side TSN translator (DS-TT) and a network-side TSN translator (NW-TT) on the user plane. By selecting a port pair consisting of DS-TT and NW-TT, TSN ingress and egress ports are provided for TSN service transmission. For ordinary 5G Ethernet sessions, TSN service transmission has the following problems: in the scenario of inserting the Intermediate User Plane Function (I-UPF), it is difficult to reduce the latency between DS-TT and NW-TT, and because the service loads of each port on NW-TT are different, the selection of port pairs is more complicated. In summary, it is not conducive to improving the communication quality of TSN services. Summary of the invention

[0003] In order to solve the problem existing in the related art that is not conducive to improving the communication quality of TSN services, the embodiments of the present application propose an information transmission method, device, electronic device, storage medium and program product.

[0004] The present application provides an information transmission method, which is applied to a first network element. The method includes:

[0005] During a session establishment process or a session modification process, first information is obtained from a second network element, where the first information includes one or more of the following: an NW-TT port number, a user plane data function (User Plane Function, UPF) identifier corresponding to the NW-TT port number, and an NW-TT port load.

[0006] In some embodiments, the first information is carried by one or more of an N4 session reporting message, an N4 session modification message, a policy control function (PCF) policy authorization notification, a UPF event reporting notification, a port management information container (PMIC) and a user plane node management information container (UMIC).

[0007] In some embodiments, during the session establishment process or the session modification process, the method also includes: sending second information to the second network element; the second information includes one or more of the following: an indication of whether the I-UPF turns on the first function, the first function turned on by the UPF, the first function turned on by the I-UPF, an identifier of at least one UPF, an identifier of at least one I-UPF, an NW-TT port number, a PMIC corresponding to the NW-TT port number, and a UMIC corresponding to the NW-TT port number.

[0008] In some embodiments, the second information is carried by one or more of an N4 session report message, an N4 session modification message, a PCF policy authorization notification, a PMIC, and a UMIC.

[0009] In some embodiments, the first network element obtains the second information from the second network element based on the first information, or the first network element sends the second information to the second network element based on third information, and the third information includes one or more of the following: information indicating whether the UPF is allowed to enable the first function, information indicating whether the I-UPF is allowed to enable the first function, the first function allowed by the UPF, the first function allowed by the I-UPF, the maximum number of NW-TT ports allowed for a session, and the maximum load allowed for the NW-TT port.

[0010] In some embodiments, the third information is information acquired from a third network element, or is information locally configured by the first network element.

[0011] This embodiment of the present application provides another information transmission method, which is applied to a second network element. The method includes:

[0012] During a session establishment process or a session modification process, first information is sent to a first network element, where the first information includes one or more of the following: an NW-TT port number, a UPF identifier corresponding to the NW-TT port number, and an NW-TT port load.

[0013] In some embodiments, the first information is carried by one or more of an N4 session reporting message, an N4 session modification message, a PCF policy authorization notification, a UPF event reporting notification, a PMIC, and a UMIC.

[0014] In some embodiments, the second network element obtains the first information based on fourth information; the fourth information includes one or more of the following: an indication of requesting NW-TT port load, an indication of quality of service (QoS) monitoring.

[0015] In some embodiments, during the session establishment process or the session modification process, the method also includes: obtaining second information from the first network element; the second information includes one or more of the following: an indication of whether the I-UPF turns on the first function, the first function turned on by the UPF, the first function turned on by the I-UPF, an identifier of at least one UPF, an identifier of at least one I-UPF, an NW-TT port number, a PMIC corresponding to the NW-TT port number, and a UMIC corresponding to the NW-TT port number.

[0016] In some embodiments, the second information is carried by one or more of an N4 session modification message, an N4 session report message, a PCF policy authorization notification, a PMIC, and a UMIC.

[0017] The present application embodiment provides another information transmission method, which is applied to a fourth network element. The method includes:

[0018] During the session establishment process or the session modification process, fifth information is sent to the fifth network element, and the fifth information includes one or more of the following: NW-TT port number, UPF identifier corresponding to the NW-TT port number, and NW-TT port load.

[0019] In some embodiments, the fifth information is carried by one or more of a session management function (SMF) session establishment request and an SMF session update request.

[0020] In some embodiments, the fifth network element is used to support sending sixth information to the fourth network element during a session establishment process or a session modification process; the sixth information includes one or more of the following: an indication of whether the I-UPF turns on the first function, the first function turned on by the UPF, the first function turned on by the I-UPF, an identifier of at least one UPF, an identifier of at least one I-UPF, an NW-TT port number, a PMIC corresponding to the NW-TT port number, and a UMIC corresponding to the NW-TT port number.

[0021] In some embodiments, the sixth information is carried by one or more of an SMF session establishment request and an SMF session update request.

[0022] In some embodiments, the fifth network element is used to support sending seventh information to the sixth network element during a session establishment process or a session modification process; the seventh information includes one or more of the following: NW-TT port number, UPF identifier corresponding to the NW-TT port number, NW-TT port load, delay information, information indicating whether the UPF is allowed to enable the first function, information indicating whether the I-UPF is allowed to enable the first function, the first function allowed by the UPF, the first function allowed by the I-UPF, the maximum number of NW-TT ports allowed for the session, and the maximum load allowed for the NW-TT port. The delay information includes one or more of air interface delay, N3 delay, N9 delay and N19 delay.

[0023] The embodiment of the present application further provides an information transmission device, which is applied to a first network element, and the device includes:

[0024] A first triggering module, used to trigger the first processing module during a session establishment process or a session modification process;

[0025] The first processing module is used to obtain first information from the second network element when triggered, where the first information includes one or more of the following: NW-TT port number, UPF identifier corresponding to the NW-TT port number, and NW-TT port load.

[0026] The embodiment of the present application also provides another information transmission device, which is applied to a second network element, and the device includes:

[0027] A second triggering module, used to trigger a second processing module during a session establishment process or a session modification process;

[0028] The second processing module is used to send first information to the first network element when triggered, where the first information includes one or more of the following: NW-TT port number, UPF identifier corresponding to the NW-TT port number, and NW-TT port load.

[0029] The embodiment of the present application also provides another information transmission device, which is applied to a fourth network element, and the device includes:

[0030] A third triggering module, used to trigger a third processing module during a session establishment process or a session modification process;

[0031] The third processing module is used to send fifth information to the fifth network element when triggered, and the fifth information includes one or more of the following: NW-TT port number, UPF identifier corresponding to the NW-TT port number, and NW-TT port load.

[0032] An embodiment of the present application also provides an electronic device, comprising a processor and a memory for storing a computer program that can be run on the processor; wherein the processor is used to run the computer program to execute any one of the above-mentioned information transmission methods.

[0033] An embodiment of the present application also provides a computer storage medium on which a computer program is stored. When the computer program is executed by a processor, any one of the above-mentioned information transmission methods is implemented.

[0034] An embodiment of the present application also provides a computer program product, including a computer program, which implements any of the above-mentioned information transmission methods when executed by a processor.

[0035] It can be seen that during the session establishment process or the session modification process, the first network element can obtain information such as the NW-TT port number, the UPF identifier corresponding to the NW-TT port number, or the NW-TT port load from the second network element, which is conducive to reasonably selecting the port pair consisting of DS-TT and NW-TT according to the information related to NW-TT, and further helps to reduce the delay between DS-TT and NW-TT and improve the communication quality of TSN services. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic diagram of a network system architecture for exchanging TSN information in related technologies;

[0037] Figure 2 This is a flow chart of an information transmission method applied to a first network element according to an embodiment of the present application;

[0038] Figure 3 This is a flow chart of an information transmission method applied to a second network element according to an embodiment of the present application;

[0039] Figure 4 This is a flow chart of an information transmission method applied to a third network element according to an embodiment of the present application;

[0040] Figure 5 A schematic diagram of a network system architecture for a single SMF scenario provided in an embodiment of the present application;

[0041] Figure 6 A schematic diagram of the interactive process of the information transmission method provided for a single SMF scenario in an embodiment of the present application;

[0042] Figure 7 A schematic diagram of a network system architecture for an I-SMF insertion scenario provided in an embodiment of the present application;

[0043] Figure 8A schematic diagram of the interactive process of the information transmission method provided for the I-SMF insertion scenario in an embodiment of the present application;

[0044] Fig. 9 This is a schematic diagram of the structure of an information transmission device applied to a first network element according to an embodiment of the present application;

[0045] Fig.10 A schematic diagram of the structure of a session switching device applied to a second network element according to an embodiment of the present application;

[0046] Fig.11 This is a schematic diagram of the structure of an information transmission device applied to a third network element according to an embodiment of the present application;

[0047] Fig.12 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0048] Figure 1 Schematic diagram of the network system architecture used to exchange TSN information in related technologies, such as Figure 1 As shown, the industrial terminal can communicate with the Radio Access Network (RAN) and the Access and Mobility Management Function (AMF) through the device side bridge, and the 5GS bridge can include DS-TT and User Equipment (UE). The UE can communicate with the AMF through the N1 interface, the AMF can communicate with the Unified Data Management Function (UDM) through the N8 interface, and the AMF can communicate with the SMF through the N11 interface; the RAN can communicate with the UPF or NW-TT through the N3 interface, and the SMF can communicate with the UPF or NW-TT through the N4 interface; the UPF or NW-TT can communicate with the Programmable Logic Controller (PLC) through the user plane. SMF can communicate with PCF through the N7 interface, PCF can communicate with the Network Exposure Function (NEF) through the N30 interface, the Time Sensitive Communication and Time Synchronization Function (TSCTSF) can communicate with PCF and NEF respectively, and NEF can communicate with the Application Function (AF) through the N33 interface.

[0049] Reference Figure 1 In the network architecture shown, the key steps of establishing a TSN session may include: 1) Port information reporting: UE or DS-TT may report its own device or port information (i.e., "5GS bridge information"), and UPF or NW-TT may also report its own device or port information. For example, the reported port information may be port number, DS-TT media access control (MAC) address, UE-DS-TT residence time, and other information. 2) Port information configuration and delivery: TSCTSF or Time Sensitive Networking Application Function (TSN AF) may select and configure the ports of DS-TT and NW-TT based on 5GS bridge information, i.e., calculate the 5GS bridge delay between each port of DS-TT and NW-TT respectively, and select a suitable port pair based on the 5GS bridge delay. TSCTSF or TSN AF may also configure port information based on PMIC and UMIC, and deliver the configured port information to DS-TT and NW-TT via the 5G network.

[0050] In the related technologies, for the existing standard definition method of the 3rd Generation Partnership Project (3GPP), TSN technology only supports local scenarios, that is, single UPF and single SMF, and cannot cope with wide-area deterministic scenarios such as across campuses, or even across cities or provinces. In order to realize TSN wide-area deterministic communication, consider inserting I-UPF and intermediate SMF (I-SMF) networking scenarios. Among them, for ordinary 5G Ethernet sessions, TSN service transmission has the following problems:

[0051] 1) The insertion of I-UPF introduces N9 delay and I-NW-TT port processing delay, making it difficult to reduce the end-to-end delay of the "5GS Bridge" (i.e., the delay between DS-TT and NW-TT) and difficult to achieve jitter protection.

[0052] 2) There are differences in the service loads of each port on the NW-TT. For example, the I-UPF may be an uplink classifier (ULCL) UPF, which carries different TSN services for different protocol data unit session anchors (PSA) UPFs. The difference in service volume may be large. In this way, the selection of the "port pair" (that is, the port group pair of DS-TT, I-NW-TT, and NW-TT for a certain TSN session) of the 5GS bridge will become more complicated.

[0053] 3) Since the first function needs to be enabled in I-UPF, the usage cost and package cost are increased.

[0054] In summary, for ordinary 5G Ethernet sessions, TSN services have problems of low communication quality and high usage costs.

[0055] The above-mentioned problems existing in the related technology will be more obvious in the communication scenarios between different UEs. The technical solutions of the embodiments of the present application are proposed to solve the above-mentioned technical problems. The embodiments of the present application comprehensively consider factors such as segment delay, jitter, port-level load, etc., and improve the decision-making mechanism of the "5GS Bridge" on the control plane to achieve the optimization of the transmission path of the TSN service on the user plane and ensure the communication effect of the TSN service in the wide area scenario.

[0056] The following is a further detailed description of the embodiments of the present application in conjunction with the accompanying drawings and examples. It should be understood that the embodiments provided herein are only used to explain the embodiments of the present application and are not intended to limit the embodiments of the present application. In addition, the embodiments provided below are partial embodiments for implementing the present application, rather than providing all embodiments for implementing the present application. In the absence of conflict, the technical solutions recorded in the embodiments of the present application can be implemented in any combination.

[0057] It should be noted that, in the embodiments of the present application, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a method or device including a series of elements includes not only the elements explicitly recorded, but also includes other elements not explicitly listed, or also includes elements inherent to the implementation of the method or device. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the presence of other related elements (such as steps in a method or units in a device, for example, a unit may be a part of a circuit, a part of a processor, a part of a program or software, etc.) in the method or device including the element.

[0058] The information transmission method provided in the embodiment of the present application includes a series of steps, but the information transmission method provided in the embodiment of the present application is not limited to the recorded steps. Similarly, the session switching device provided in the embodiment of the present application includes a series of modules, but the device provided in the embodiment of the present application is not limited to including the modules explicitly recorded, and may also include modules required to obtain relevant information or perform processing based on information.

[0059] An embodiment of the present application proposes an information transmission method applied to a first network element, where the first network element may be a TSN control node such as TSC TSF, TSN AF, SMF, etc.

[0060] Figure 2is a flow chart of an information transmission method applied to a first network element in an embodiment of the present application, such as Figure 2 As shown, the process may include:

[0061] Step 201: During a session establishment process or a session modification process, first information is obtained from a second network element, where the first information includes one or more of the following: an NW-TT port number, a UPF identifier corresponding to the NW-TT port number, and an NW-TT port load.

[0062] In an embodiment of the present application, the second network element may be a UPF, I-UPF, NW-TT or other network elements, NW-TT may be deployed in UPF or I-UPF, and the UPF identifier corresponding to the NW-TT port number may be an identity document (ID), a name or other identifier.

[0063] In practical applications, step 201 can be implemented based on a processor, and the above-mentioned processor can be at least one of an application specific integrated circuit (ASIC), a digital signal processor (DSP), a digital signal processing device (DSPD), a programmable logic device (PLD), a field programmable gate array (FPGA), a central processing unit (CPU), a controller, a microcontroller, and a microprocessor.

[0064] It can be seen that during the session establishment process or the session modification process, the first network element can obtain information such as the NW-TT port number, the UPF identifier corresponding to the NW-TT port number, or the NW-TT port load from the second network element, which is conducive to reasonably selecting the port pair consisting of DS-TT and NW-TT according to the information related to NW-TT, and further helps to reduce the delay between DS-TT and NW-TT and improve the communication quality of TSN services.

[0065] In some embodiments of the present application, the first information may be carried by one or more of an N4 session report message, an N4 session modification message, a PCF policy authorization notification, a UPF event report notification, a PMIC, and a UMIC. In this way, the second network element can easily obtain the first information.

[0066] In some embodiments of the present application, during the session establishment process or the session modification process, the method also includes: sending second information to the second network element; the second information includes one or more of the following: an indication of whether the I-UPF turns on the first function, the first function turned on by the UPF, the first function turned on by the I-UPF, an identifier of at least one UPF, an identifier of at least one I-UPF, an NW-TT port number, a PMIC corresponding to the NW-TT port number, and a UMIC corresponding to the NW-TT port number.

[0067] In the embodiment of the present application, the NW-TT may be deployed in a PSA UPF or an I-UPF, wherein the NW-TT deployed in the I-UPF may be denoted as an I-NW-TT.

[0068] Exemplarily, the first function includes one or more of the following: TSN, frame replication, stream splitting, frame elimination, single stream recovery, redundancy processing, sorting, numbering, sequence number generation, sequence number recovery, potential error monitoring, sequence number encoding / decoding, dual-transmission selection, time synchronization, cache and forwarding mechanism, and gating. For example, the TSN function enabled by UPF or the TSN function enabled by I-UPF may support protocols such as Institute of Electrical and Electronics Engineers (IEEE) 1588v2, IEEE 802.1AS, IEEE Qbv, and IEEE Qch.

[0069] Exemplarily, the second information may be carried by one or more of an N4 session report message, an N4 session modification message, a PCF policy authorization notification, a PMIC, and a UMIC.

[0070] In some embodiments of the present application, the first network element sends the second information to the second network element based on the first information, or the first network element sends the second information to the second network element based on the third information, and the third information includes one or more of the following: information indicating whether the UPF is allowed to enable the first function, information indicating whether the I-UPF is allowed to enable the first function, the first function that the UPF is allowed to enable, the first function that the I-UPF is allowed to enable, the maximum number of NW-TT ports allowed for a session, and the maximum load allowed for an NW-TT port. It can be seen that the second information can be conveniently obtained based on the first information or the third information.

[0071] Exemplarily, the third information may be information obtained by the second network element from the third network element, or information locally configured by the first network element. Here, the third network element may be a network element such as a UDM, a Unified Data Repository (UDR), a Network Data Analytics Function (NWDAF), or a PCF.

[0072] Figure 3 This is a flow chart of an information transmission method applied to a second network element according to an embodiment of the present application. Figure 3 As shown, the process may include:

[0073] Step 301: During a session establishment process or a session modification process, first information is sent to a first network element, where the first information includes one or more of the following: an NW-TT port number, a UPF identifier corresponding to the NW-TT port number, and an NW-TT port load.

[0074] Exemplarily, the first information may be carried by one or more of an N4 session report message, an N4 session modification message, a PCF policy authorization notification, a UPF event report notification, a PMIC, and a UMIC.

[0075] In practical applications, step 301 can be implemented based on a processor, and the processor can be at least one of ASIC, DSP, DSPD, PLD, FPGA, CPU, controller, microcontroller, and microprocessor.

[0076] It can be seen that during the session establishment process or the session modification process, the first network element can obtain information such as the NW-TT port number, the UPF identifier corresponding to the NW-TT port number, or the NW-TT port load from the second network element, which is conducive to reasonably selecting the port pair consisting of DS-TT and NW-TT according to the information related to NW-TT, and further helps to reduce the delay between DS-TT and NW-TT and improve the communication quality of TSN services.

[0077] In some embodiments of the present application, the second network element may obtain the first information based on the fourth information; the fourth information includes one or more of the following: an indication of requesting NW-TT port load, an indication of QoS monitoring. In this way, the first information may be conveniently obtained based on the fourth information.

[0078] In some embodiments of the present application, during the session establishment process or the session modification process, the method also includes: obtaining second information from the first network element; the second information includes one or more of the following: an indication of whether the I-UPF turns on the first function, the first function turned on by the UPF, the first function turned on by the I-UPF, an identifier of at least one UPF, an identifier of at least one I-UPF, an NW-TT port number, a PMIC corresponding to the NW-TT port number, and a UMIC corresponding to the NW-TT port number.

[0079] Exemplarily, the second information may be carried by one or more of an N4 session modification message, an N4 session report message, a PCF policy authorization notification, a PMIC, and a UMIC.

[0080] The embodiment of the present application also proposes an information transmission method applied to a fourth network element, and the fourth network element may be an I-SMF or other network element.

[0081] Figure 4 is a flow chart of an information transmission method applied to a fourth network element in an embodiment of the present application. Figure 4 As shown, the process may include:

[0082] Step 401: During a session establishment process or a session modification process, fifth information is sent to a fifth network element, where the fifth information includes one or more of the following: an NW-TT port number, a UPF identifier corresponding to the NW-TT port number, and an NW-TT port load.

[0083] In the embodiment of the present application, the fifth network element may be a network element such as an anchor SMF (Anchor SMF, A-SMF). Exemplarily, the fifth information is carried by one or more of a session management function SMF session establishment request (Nsmf_PDUSessionCreate Request) and an SMF session update request (Nsmf_PDUSession_Update Request).

[0084] In practical applications, step 401 may be implemented based on a processor, and the processor may be at least one of ASIC, DSP, DSPD, PLD, FPGA, CPU, controller, microcontroller, and microprocessor.

[0085] It can be seen that during the session establishment process or the session modification process, the fourth network element can send information such as the NW-TT port number, the UPF identifier corresponding to the NW-TT port number, or the NW-TT port load to the fifth network element. Thus, the fifth network element can reasonably configure the relevant parameters of the TSN service based on the information related to NW-TT, which is conducive to improving the communication quality of the TSN service.

[0086] In some embodiments of the present application, the fifth network element is used to support sending sixth information to the fourth network element during a session establishment process or a session modification process; the sixth information includes one or more of the following: an indication of whether the I-UPF turns on the first function, the first function turned on by the UPF, the first function turned on by the I-UPF, an identifier of at least one UPF, an identifier of at least one I-UPF, an NW-TT port number, a PMIC corresponding to the NW-TT port number, and a UMIC corresponding to the NW-TT port number.

[0087] Exemplarily, the sixth information may be carried by one or more of an SMF session establishment request (Nsmf_PDUSessionCreateResponse) and an SMF session update request (Nsmf_PDUSession_Update Response).

[0088] It can be understood that after the fifth network element sends the sixth information related to the first function to the fourth network element, the third network element can reasonably configure relevant parameters according to the information related to the first function.

[0089] In some embodiments of the present application, the fifth network element is used to support sending seventh information to the sixth network element during a session establishment process or a session modification process; the seventh information includes one or more of the following: NW-TT port number, UPF identifier corresponding to the NW-TT port number, NW-TT port load, delay information, information indicating whether the UPF is allowed to enable the first function, information indicating whether the I-UPF is allowed to enable the first function, the first function allowed by the UPF, the first function allowed by the I-UPF, the maximum number of NW-TT ports allowed for the session, the maximum load allowed for the NW-TT port, and the delay information includes one or more of the air interface delay, N3 segment delay, N9 segment delay and N19 segment delay.

[0090] In the embodiment of the present application, the sixth network element may be a network element such as a PCF.

[0091] It can be understood that after the fifth network element sends the sixth information related to the first function to the sixth network element, the sixth network element can reasonably configure relevant parameters according to the information related to the first function.

[0092] In the field of TSN wide area communication, the embodiments of the present application can provide interactive processes of information transmission methods for single SMF scenarios and I-SMF insertion scenarios respectively, which are explained below with reference to the accompanying drawings.

[0093] Figure 5 A schematic diagram of the network system architecture for a single SMF scenario provided in an embodiment of the present application, see Figure 5, industrial terminals can communicate with RAN and AMF through UE, and UE is deployed with DS-TT. RAN can communicate with I-UPF through N3 interface, and I-UPF is deployed with NW-TT; I-UPF can communicate with A-UPF through N9 interface, and A-UPF is deployed with NW-TT. A-UPF can communicate with PLC, AMF can communicate with UDM, SMF can communicate with AMF, UDM and PCF respectively, and SMF can also communicate with I-UPF and A-UPF respectively through N4 interface; PCF can communicate with TSCTSF or TSN AF, TSCTSF or TSN AF can communicate with NEF, and NEF can communicate with AF.

[0094] Reference Figure 5 In the network architecture shown, in the session process of the wide area scenario, SMF can select UPF or I-UPF for the TSN session. UPF, I-UPF or NW-TT can exchange information based on the N4 interface, and UE or DS-TT can exchange information based on the Non-Access Stratum (NAS) signaling. The reporting, configuration and delivery of TSN information can be realized through the interaction between DS-TT, NW-TT and 5G Core (5G Core, 5GC).

[0095] In the interactive process of the information transmission method provided for the single SMF scenario, the session process can be modified to decide whether the I-UPF enables the first function, the port selection of the I-NW-TT, and other 5GS bridge configurations. Figure 6 This is a schematic diagram of the interactive process of the information transmission method provided for a single SMF scenario in an embodiment of the present application, such as Figure 6 As shown, the process includes:

[0096] Step 61: UE or DS-TT initiates a session establishment request to AMF.

[0097] The session establishment request is a PDU session establishment request, and the session establishment request may carry information such as DS-TT or UE residence time, DS-TT port number, PMIC, MAC address of the DS-TT port, etc.

[0098] Step 62: AMF selects SMF.

[0099] Step 63: AMF sends a PDU session establishment request to SMF.

[0100] Step 64: SMF obtains the contract data.

[0101] SMF can obtain the subscription data from UDM based on the Nudm_SDM_Get message. Compared with the technical solutions of the related art, the newly added subscription data obtained by SMF may include one or more of the following: whether to run UPF or I-UPF to enable TSN, the first function allowed to be enabled, the maximum number of NW-TT ports allowed for the session, and the maximum load allowed for the NW-TT port.

[0102] Step 65: SMF sends a PDU session establishment response to AMF.

[0103] Step 66: Perform PDU session authentication or authorization.

[0104] Step 67a: SMF selects PCF.

[0105] Step 67b: SMF initiates session management (SM) policy collaborative establishment or SM policy collaborative modification to PCF.

[0106] Step 68: SMF selects UPF or I-UPF.

[0107] SMF can select UPF or I-UPF that supports TSN based on the Data Network Name (DNN) and Single Network Slice Selection Assistance Information (S-NSSAI).

[0108] Step 69: SMF initiates a collaborative policy modification to PCF.

[0109] Step 610a: SMF initiates an N4 session establishment request to UPF, I-UPF or NW-TT.

[0110] The N4 session establishment request may carry request information for the NW-TT port number; compared with the technical solutions of related technologies, the newly added information in the N4 session establishment request may include one or more of the following: an indication of requesting the NW-TT port load, an indication of QoS monitoring.

[0111] Step 610b: UPF, I-UPF or NW-TT sends an N4 session establishment response to SMF.

[0112] The N4 session establishment response may carry the NW-TT port number; compared with the technical solutions of the related technologies, the newly added information in the N4 session establishment response may include one or more of the following: NW-TT port load, QoS monitoring results.

[0113] Step 611: SMF and RAN transmit N1 message and N2 message.

[0114] Step 612: AMF initiates an N2 PDU session establishment request to the RAN.

[0115] Here, AMF can initiate an N2 PDU session establishment request to RAN through a NAS message.

[0116] Step 613: RAN interacts with UE or DS-TT to establish access network (AN) resources.

[0117] Here, if the PDU session establishment is agreed, step 613 may be executed.

[0118] Step 614: RAN sends a PDU session response to AMF.

[0119] Step 615: AMF sends a PDU session update request to SMF.

[0120] Step 616a: SMF sends an N4 session modification request to UPF, I-UPF or NW-TT.

[0121] Step 616b: UPF, I-UPF or NW-TT sends an N4 session modification response to SMF.

[0122] Step 616c: SMF implements session registration through interaction with UDM.

[0123] Step 617: SMF sends a PDU session update response to AMF.

[0124] Step 618: SMF sends a PDU session update notification to AMF.

[0125] Step 619: AMF sends IPv6 address configuration information to UE or DS-TT.

[0126] Step 620: The SMF initiates an SM policy collaborative modification request to the PCF.

[0127] The policy collaborative modification request may carry 5GS bridge information, which may include DS-TT MAC address, UE or DS-TT residence time, user plane (U-plane) node ID, DS-TT port number, and NW-TT port number. Compared with the technical solutions of the related art, the newly added information in the 5GS bridge information of the policy collaborative modification request may include one or more of the following: UPF ID corresponding to the NW-TT port number, I-UPF ID corresponding to the NW-TT port number, NW-TT port load, subscription data obtained through step 64, and latency information.

[0128] Step 621: SMF cancels the subscription information through interaction with UDM.

[0129] It should be noted that step 621 is an optional step.

[0130] Step 622: The PCF sends a PCF authorization policy notification to the TSC TSF or TSN AF.

[0131] The PCF authorization policy notification may carry 5GS bridge information, which may include DS-TT MAC address, UE or DS-TT residence time, U-plane node ID, DS-TT port number, and NW-TT port number. Compared with the technical solutions of the related art, the newly added information in the 5GS bridge information of the policy collaborative modification request may include one or more of the following: UPF ID corresponding to the NW-TT port number, I-UPF ID corresponding to the NW-TT port number, NW-TT port load, subscription data obtained through step 64, and latency information.

[0132] Step 623: TSCTSF or TSN AF interacts with UDM to establish AN resources.

[0133] Here, if the PDU session establishment is agreed, step 623 may be executed.

[0134] Step 624: TSCTSF or TSN AF calculates the 5GS bridge configuration.

[0135] Exemplarily, the 5GS bridge configuration may include one or more of the following: an indication of whether the UPF turns on the first function, an indication of whether the I-UPF turns on the first function, the first function turned on by the UPF, the first function turned on by the I-UPF, a port pair consisting of DS-TT and NW-TT, a 5GS bridge delay, and a gating list of each port. Here, DS-TT and NW-TT represent the delay between DS-TT and NW-TT, and the gating list of each port refers to the gating list of ports such as DS-TT and NW-TT.

[0136] Step 625: TSC TSF or TSN AF initiates a PCF policy authorization response to the PCF.

[0137] Compared with the technical solutions of the related technologies, the new information of the PCF policy authorization response includes one or more of the following: an indication of whether the I-UPF turns on TSN, the ID of at least one UPF, the ID of at least one I-UPF, the PMIC corresponding to the NW-TT port number, the UMIC corresponding to the NW-TT port number, and the PMIC corresponding to the DS-TT port number.

[0138] Step 626: PCF initiates an SM policy collaborative modification response to SMF.

[0139] Compared with the technical solutions of the related technologies, the new information of the SM policy collaborative modification response includes one or more of the following: an indication of whether the I-UPF turns on TSN, the ID of at least one UPF, the ID of at least one I-UPF, the PMIC corresponding to the NW-TT port number, the UMIC corresponding to the NW-TT port number, and the PMIC corresponding to the DS-TT port number.

[0140] Step 627: triggering the session modification process based on step 626.

[0141] In this step, SMF can send TSN configuration information to UPF, NW-TT, UE or DS-TT through PMIC or UMIC.

[0142] Figure 7 A schematic diagram of the network system architecture for the I-SMF insertion scenario provided in the embodiment of the present application, referring to Figure 7 , industrial terminals can communicate with RAN and AMF through UE, and UE is deployed with DS-TT. RAN can communicate with I-UPF through N3 interface, and I-UPF is deployed with NW-TT; I-UPF can communicate with A-UPF through N9 interface, and A-UPF is deployed with NW-TT. A-UPF can communicate with PLC, AMF can communicate with I-SMF, I-SMF can communicate with A-SMF through N16a interface, A-SMF can communicate with A-UPF through N4 interface, and can also communicate with PCF. PCF can communicate with TSC TSF or TSNAF, TSCTSF or TSN AF can communicate with NEF, and NEF can communicate with AF.

[0143] Reference Figure 7 In the network architecture shown, in the session process of the wide area scenario, I-SMF can select I-UPF for the TSN session, and A-SMF can select UPF. UPF, I-UPF or NW-TT can exchange information based on the N4 interface, and UE or DS-TT can exchange information based on NAS signaling. The reporting, configuration and delivery of TSN information can be realized through the interaction of DS-TT, NW-TT and 5GC.

[0144] In the interactive process of the information transmission method provided for the I-SMF insertion scenario, the session process can be modified to determine whether the I-UPF opens the first function, the port selection of the I-NW-TT, and other 5GS bridge configurations. Figure 6 Compared with the interaction process shown in FIG. 1 , the transmission of N16a interface messages is added.

[0145] Figure 8 A schematic diagram of the interactive process of the information transmission method provided for the I-SMF insertion scenario in an embodiment of the present application, such as Figure 8 As shown, the process includes:

[0146] Step 81: The UE initiates a session establishment request to the AMF.

[0147] Step 82: AMF selects SMF.

[0148] Step 83a: AMF sends a session establishment request to I-SMF.

[0149] Step 83b: I-SMF sends a session establishment response to AMF.

[0150] Step 84: The I-SMF selects the UPF.

[0151] Step 85a: The I-SMF sends an N4 session establishment request to the I-UPF.

[0152] Step 85b: The I-UPF sends an N4 session establishment response to the I-SMF.

[0153] Step 86: The I-SMF initiates a session establishment request to the A-SMF.

[0154] The newly added information in the session establishment request sent by I-SMF to A-SMF includes one or more of the following: I-UPF ID corresponding to the I-NW-TT port number, I-NW-TT port load, air interface delay, and N3 segment delay.

[0155] Step 87: A-SMF cancels the subscription information by interacting with UDM.

[0156] It should be noted that step 87 is an optional step.

[0157] Step 88: Perform PDU session authentication or authorization.

[0158] Step 89a: A-SMF selects PCF.

[0159] Here, the PCF selected by A-SMF can be recorded as H-PCF.

[0160] Step 89b: A-SMF initiates SM policy collaborative establishment or SM policy collaborative modification to H-PCF.

[0161] Step 810: A-SMF selects UPF.

[0162] Step 811: A-SMF initiates SM policy collaborative modification to PCF.

[0163] Step 812a: A-SMF sends an N4 session establishment request to PSA UPF.

[0164] Step 812b: PSA UPF sends N4 session establishment response to SMF

[0165] Step 812c: A-SMF implements session registration through interaction with UDM.

[0166] Step 813: A-SMF initiates a session establishment response to I-SMF.

[0167] The newly added information in the session establishment response sent by A-SMF to I-SMF includes one or more of the following: an indication of whether I-UPF has enabled TSN, I-UPF ID, I-NW-TT port number and corresponding PMIC, I-NW-TT port number and corresponding UMIC, DS-TT port number and corresponding PMIC.

[0168] Step 814: The I-SMF and AMF transmit the N1 message and the N2 message.

[0169] Step 815: AMF initiates an N2 PDU session establishment request to the RAN.

[0170] Step 816: RAN performs RRC reconfiguration by interacting with UE.

[0171] Step 817: RAN sends an N2 PDU session response to AMF.

[0172] Step 818: AMF sends a PDU session update request to I-SMF.

[0173] Step 819a: The I-SMF sends an N4 session modification request to the I-UPF.

[0174] Step 819b: The I-UPF sends an N4 session modification response to the I-SMF.

[0175] Step 820: I-SMF sends a PDU session update response to AMF.

[0176] Step 821: I-SMF sends a PDU session update notification to AMF.

[0177] Step 822: A-SMF sends IPv6 address configuration information to the UE through PSA UPF and I-UPF.

[0178] Step 823: The I-SMF sends a PDU session update request to the A-SMF.

[0179] Step 824: A-SMF interacts with UDM to cancel subscription messages or deregister messages.

[0180] It should be noted that step 824 is an optional step.

[0181] The embodiment of the present application proposes a wide-area deterministic communication method based on TSN. By comprehensively considering factors such as segment delay / jitter and port-level load, the decision-making mechanism of the "5GS Bridge" on the control plane is improved, the transmission path of TSN services on the user plane is optimized, and the communication effect of TSN services in wide-area scenarios is guaranteed.

[0182] Those skilled in the art will appreciate that, in the above method of specific implementation, the order in which the steps are written does not imply a strict execution order and does not constitute any limitation on the implementation process. The specific execution order of the steps should be determined by their functions and possible internal logic.

[0183] Fig. 9 Schematic diagram of the structure of the information transmission device applied to the first network element in the embodiment of the present application. Fig. 9 As shown, the device comprises:

[0184] A first triggering module 901, configured to trigger a first processing module during a session establishment process or a session modification process;

[0185] The first processing module 902 is used to obtain first information from the second network element when triggered, where the first information includes one or more of the following: NW-TT port number, UPF identifier corresponding to the NW-TT port number, and NW-TT port load.

[0186] In some embodiments, the first information is carried by one or more of an N4 session reporting message, an N4 session modification message, a PCF policy authorization notification, a UPF event reporting notification, a PMIC, and a UMIC.

[0187] In some embodiments, the first processing module 902 is also used to send second information to the second network element during the session establishment process or the session modification process; the second information includes one or more of the following: an indication of whether the I-UPF turns on the first function, the first function turned on by the UPF, the first function turned on by the I-UPF, an identifier of at least one UPF, an identifier of at least one I-UPF, an NW-TT port number, a PMIC corresponding to the NW-TT port number, and a UMIC corresponding to the NW-TT port number.

[0188] In some embodiments, the second information is carried by one or more of an N4 session report message, an N4 session modification message, a PCF policy authorization notification, a PMIC, and a UMIC.

[0189] In some embodiments, the first network element sends the second information to the second network element based on the first information, or the first network element sends the second information to the second network element based on third information, and the third information includes one or more of the following: information indicating whether the UPF is allowed to enable the first function, information indicating whether the I-UPF is allowed to enable the first function, the first function allowed by the UPF, the first function allowed by the I-UPF, the maximum number of NW-TT ports allowed for a session, and the maximum load allowed for the NW-TT port.

[0190] In some embodiments, the third information is information acquired from a third network element, or is information locally configured by the first network element.

[0191] In practical applications, the first trigger module 901 and the first processing module 902 can be implemented based on a processor and a communication device.

[0192] Fig.10 Schematic diagram of the structure of the session switching device applied to the second network element according to an embodiment of the present application. Fig.10 As shown, the device comprises:

[0193] The second trigger module 1001 is used to trigger the second processing module during the session establishment process or the session modification process;

[0194] The second processing module 1002 is used to send first information to the first network element when triggered, where the first information includes one or more of the following: NW-TT port number, UPF identifier corresponding to the NW-TT port number, and NW-TT port load.

[0195] In some embodiments, the first information is carried by one or more of an N4 session reporting message, an N4 session modification message, a PCF policy authorization notification, a UPF event reporting notification, a PMIC, and a UMIC.

[0196] In some embodiments, the second network element obtains the first information based on fourth information; the fourth information includes one or more of the following: an indication of requesting NW-TT port load, an indication of QoS monitoring.

[0197] In some embodiments, the second processing module 1002 is also used to obtain second information from the first network element during a session establishment process or a session modification process; the second information includes one or more of the following: an indication of whether the I-UPF turns on the first function, the first function turned on by the UPF, the first function turned on by the I-UPF, an identifier of at least one UPF, an identifier of at least one I-UPF, an NW-TT port number, a PMIC corresponding to the NW-TT port number, and a UMIC corresponding to the NW-TT port number.

[0198] In some embodiments, the second information is carried by one or more of an N4 session modification message, an N4 session report message, a PCF policy authorization notification, a PMIC, and a UMIC.

[0199] In practical applications, the second trigger module 1001 and the second processing module 1002 can be implemented based on a processor and a communication device.

[0200] Fig.11 Schematic diagram of the structure of the information transmission device applied to the fourth network element in the embodiment of the present application. Fig.11 As shown, the device comprises:

[0201] The third trigger module 1101 is used to trigger the third processing module during the session establishment process or the session modification process;

[0202] The third processing module 1102 is used to send fifth information to the fifth network element when triggered, where the fifth information includes one or more of the following: NW-TT port number, UPF identifier corresponding to the NW-TT port number, and NW-TT port load.

[0203] In some embodiments, the fifth information is carried by one or more of an SMF session establishment request and an SMF session update request.

[0204] In some embodiments, the fifth network element is used to support sending sixth information to the fourth network element during a session establishment process or a session modification process; the sixth information includes one or more of the following: an indication of whether the I-UPF turns on the first function, the first function turned on by the UPF, the first function turned on by the I-UPF, an identifier of at least one UPF, an identifier of at least one I-UPF, an NW-TT port number, a PMIC corresponding to the NW-TT port number, and a UMIC corresponding to the NW-TT port number.

[0205] In some embodiments, the sixth information is carried by one or more of an SMF session establishment request and an SMF session update request.

[0206] In some embodiments, the fifth network element is used to support sending seventh information to the sixth network element during a session establishment process or a session modification process; the seventh information includes one or more of the following: NW-TT port number, UPF identifier corresponding to the NW-TT port number, NW-TT port load, delay information, information indicating whether the UPF is allowed to enable the first function, information indicating whether the I-UPF is allowed to enable the first function, the first function allowed by the UPF, the first function allowed by the I-UPF, the maximum number of NW-TT ports allowed for the session, and the maximum load allowed for the NW-TT port. The delay information includes one or more of air interface delay, N3 delay, N9 delay and N19 delay.

[0207] In practical applications, the third trigger module 1101 and the third processing module 1102 can be implemented based on a processor and a communication device.

[0208] It should be noted that the description of the above device embodiment is similar to the description of the above method embodiment, and has similar beneficial effects as the method embodiment. For technical details not disclosed in the device embodiment of the present application, please refer to the description of the method embodiment of the present application for understanding.

[0209] It should be noted that in the embodiments of the present application, if the above method is implemented in the form of a software function module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the embodiment of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium, including a number of instructions to enable a computer device (which can be a terminal, a server, etc.) to execute all or part of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a U disk, a mobile hard disk, a read-only memory (ROM), a disk or an optical disk. In this way, the embodiments of the present application are not limited to any specific combination of hardware and software.

[0210] Correspondingly, an embodiment of the present application further provides a computer program product, which includes computer executable instructions, and the computer executable instructions are used to implement any information transmission method provided in the embodiment of the present application.

[0211] Correspondingly, an embodiment of the present application further provides a computer storage medium, on which computer executable instructions are stored, and the computer executable instructions are used to implement any one of the information transmission methods provided in the above embodiments.

[0212] An embodiment of the present application also provides an electronic device. Fig.12A schematic diagram of the structure of an electronic device provided in an embodiment of the present application is shown in FIG. Fig.12 As shown, the electronic device 120 may include:

[0213] Memory 1201, used for storing executable instructions;

[0214] The processor 1202 is used to implement any one of the above-mentioned information transmission methods when executing the executable instructions stored in the memory 1201.

[0215] The processor 1202 may be at least one of an ASIC, a DSP, a DSPD, a PLD, a FPGA, a CPU, a controller, a microcontroller, and a microprocessor.

[0216] The above-mentioned computer-readable storage medium and memory 1202 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), a magnetic random access memory (FRAM), a flash memory (Flash Memory), a magnetic surface memory, an optical disk, or a compact disc read-only memory (CD-ROM) and other memories; it can also be various terminals including one or any combination of the above-mentioned memories, such as mobile phones, computers, tablet devices, personal digital assistants, etc.

[0217] In some embodiments, the functions or modules included in the device provided in the embodiments of the present application can be used to execute the method described in the above method embodiments. The specific implementation can refer to the description of the above method embodiments. For the sake of brevity, it will not be repeated here.

[0218] The above description of various embodiments tends to emphasize the differences between the various embodiments. The same or similar aspects can be referenced to each other, and for the sake of brevity, they will not be repeated herein.

[0219] The methods disclosed in the various method embodiments provided in this application can be arbitrarily combined without conflict to obtain new method embodiments.

[0220] The features disclosed in the various product embodiments provided in this application can be arbitrarily combined without conflict to obtain new product embodiments.

[0221] The features disclosed in the various method or device embodiments provided in this application can be arbitrarily combined without conflict to obtain new method embodiments or device embodiments.

[0222] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, a magnetic disk, or an optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0223] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. An information transmission method, characterized in that: Applied in a first network element, the method includes: During the session establishment process or the session modification process, first information is obtained from the second network element, and the first information includes one or more of the following: the network side time-sensitive network converter NW-TT port number, the user plane data function UPF identifier corresponding to the NW-TT port number, and the NW-TT port load.

2. The method according to claim 1, characterized in that The first information is carried by one or more of an N4 session reporting message, an N4 session modification message, a policy control function PCF policy authorization notification, a UPF event reporting notification, a port management information container PMIC, and a user plane node management information container UMIC.

3. The method according to claim 1 or 2, characterized in that: During the session establishment process or the session modification process, the method also includes: sending second information to the second network element; the second information includes one or more of the following: an indication of whether the intermediate user plane data function I-UPF turns on the first function, the first function turned on by the UPF, the first function turned on by the I-UPF, an identifier of at least one UPF, an identifier of at least one I-UPF, an NW-TT port number, a PMIC corresponding to the NW-TT port number, and a UMIC corresponding to the NW-TT port number.

4. The method according to claim 3, characterized in that The second information is carried by one or more of an N4 session report message, an N4 session modification message, a PCF policy authorization notification, a PMIC, and a UMIC.

5. The method according to claim 3, characterized in that: The first network element sends the second information to the second network element based on the first information, or the first network element sends the second information to the second network element based on third information, and the third information includes one or more of the following: information indicating whether UPF is allowed to enable the first function, information indicating whether I-UPF is allowed to enable the first function, the first function allowed by UPF, the first function allowed by I-UPF, the maximum number of NW-TT ports allowed for a session, and the maximum load allowed for an NW-TT port.

6. The method according to claim 5, characterized in that The third information is information acquired from a third network element, or information locally configured by the first network element.

7. An information transmission method, characterized in that: Applied in the second network element, the method includes: During a session establishment process or a session modification process, first information is sent to a first network element, wherein the first information includes one or more of the following: a network side time-sensitive network converter NW-TT port number, a user plane data function UPF identifier corresponding to the NW-TT port number, and an NW-TT port load.

8. The method according to claim 7, characterized in that The first information is carried by one or more of an N4 session reporting message, an N4 session modification message, a policy control function PCF policy authorization notification, a UPF event reporting notification, a port management information container PMIC, and a user plane node management information container UMIC.

9. The method according to claim 7, characterized in that: The second network element obtains the first information based on fourth information; the fourth information includes one or more of the following: an indication of requesting NW-TT port load, an indication of quality of service QoS monitoring.

10. The method according to any one of claims 7 to 9, characterized in that: During the session establishment process or the session modification process, the method also includes: obtaining second information from the first network element; the second information includes one or more of the following: an indication of whether the intermediate user plane data function I-UPF turns on the first function, the first function turned on by the UPF, the first function turned on by the I-UPF, an identifier of at least one UPF, an identifier of at least one I-UPF, an NW-TT port number, a PMIC corresponding to the NW-TT port number, and a UMIC corresponding to the NW-TT port number.

11. The method according to claim 10, characterized in that The second information is carried by one or more of an N4 session modification message, an N4 session report message, a PCF policy authorization notification, a PMIC, and an UMIC.

12. An information transmission method, characterized in that: Applied in a fourth network element, the method includes: During the session establishment process or the session modification process, fifth information is sent to the fifth network element, and the fifth information includes one or more of the following: the network side time-sensitive network converter NW-TT port number, the user plane data function UPF identifier corresponding to the NW-TT port number, and the NW-TT port load.

13. The method according to claim 12, characterized in that The fifth information is carried by one or more of the session management function SMF session establishment request and the SMF session update request.

14. The method according to claim 12 or 13, characterized in that The fifth network element is used to support sending sixth information to the fourth network element during a session establishment process or a session modification process; the sixth information includes one or more of the following: an indication of whether the intermediate user plane data function I-UPF turns on the first function, the first function turned on by the UPF, the first function turned on by the I-UPF, an identifier of at least one UPF, an identifier of at least one I-UPF, an NW-TT port number, a port management information container PMIC corresponding to the NW-TT port number, and a user plane node management information container UMIC corresponding to the NW-TT port number.

15. The method according to claim 14, characterized in that The sixth information is carried by one or more of the SMF session establishment request and the SMF session update request.

16. The method according to claim 14, characterized in that The fifth network element is used to support sending the seventh information to the sixth network element during the session establishment process or the session modification process; the seventh information includes one or more of the following: NW-TT port number, UPF identifier corresponding to the NW-TT port number, NW-TT port load, delay information, information indicating whether the UPF is allowed to enable the first function, information indicating whether the I-UPF is allowed to enable the first function, the first function allowed by the UPF, the first function allowed by the I-UPF, the maximum number of NW-TT ports allowed for the session, and the maximum load allowed for the NW-TT port. The delay information includes one or more of the air interface delay, N3 delay, N9 delay and N19 delay.

17. An information transmission device, characterized in that: Applied in a first network element, the device includes: A first triggering module, used to trigger the first processing module during a session establishment process or a session modification process; The first processing module is used to obtain first information from the second network element when triggered, where the first information includes one or more of the following: the network side time-sensitive network converter NW-TT port number, the user plane data function UPF identifier corresponding to the NW-TT port number, and the NW-TT port load.

18. An information transmission device, characterized in that: Applied in a second network element, the device comprises: A second triggering module, used to trigger a second processing module during a session establishment process or a session modification process; The second processing module is used to send first information to the first network element when triggered, and the first information includes one or more of the following: the network side time-sensitive network converter NW-TT port number, the user plane data function UPF identifier corresponding to the NW-TT port number, and the NW-TT port load.

19. An information transmission device, characterized in that: Applied in a fourth network element, the device comprises: A third triggering module, used to trigger a third processing module during a session establishment process or a session modification process; The third processing module is used to send fifth information to the fifth network element when triggered, and the fifth information includes one or more of the following: the network side time-sensitive network converter NW-TT port number, the user plane data function UPF identifier corresponding to the NW-TT port number, and the NW-TT port load.

20. An electronic device, characterized in that: The electronic device comprises a processor and a memory for storing a computer program that can be run on the processor; wherein, The processor is configured to run the computer program to perform the method according to any one of claims 1 to 16.

21. A computer storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 16 is implemented.

22. A computer program product comprising a computer program, characterized in that The computer program implements the method of any one of claims 1 to 16 when executed by a processor.

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