CN111865830B

CN111865830B - Processing method, device and system for time delay sensitive network service TSN

Info

Publication number: CN111865830B
Application number: CN201910356052.5A
Authority: CN
Inventors: 余芳; 李岩; 李永翠
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-04-29
Filing date: 2019-04-29
Publication date: 2022-04-22
Anticipated expiration: 2039-04-29
Also published as: CN111865830A; WO2020220747A1

Abstract

The application provides a method, a device and a system for processing a time delay sensitive network (TSN) service. The method comprises the following steps: the first device can acquire a first scheduling parameter of the TSN service, clock domain information corresponding to the TSN service and a clock of the 5G system, and adjust the first scheduling parameter according to the clock corresponding to the TSN clock domain information and the clock of the 5G system to acquire a second scheduling parameter, wherein the second scheduling parameter is set based on the clock of the 5G system; and then transmitting the message of the TSN service according to the second scheduling parameter, wherein the first scheduling parameter corresponding to the TSN clock is converted into the second scheduling parameter corresponding to the clock of the 5G system, and the message of the TSN service is transmitted according to the second scheduling parameter, so that the message of the TSN service is correctly transmitted, and the improvement of the communication quality is facilitated.

Description

Processing method, device and system for time delay sensitive network service TSN

Technical Field

The present application relates to the field of mobile communications technologies, and in particular, to a method, an apparatus, and a system for processing a delay sensitive network TSN service.

Background

In a Network architecture in which the 5th generation (5G) Network and a Time Sensitive Network (TSN) are interconnected, a 5G system and a TSN converter (TSN Translator) are integrally used as a logical TSN switching node (referred to as a 5G system switching node). And, the 5G system supports a clock domain and a plurality of TSN clock domains of the 5G system, and one TSN terminal supports one TSN clock domain.

When the 5G system switching node receives the scheduling parameter of the TSN traffic (the scheduling parameter is set with reference to the clock of the TSN clock domain), the 5G system switching node understands the scheduling parameter according to the clock of the 5G system, thereby causing a problem of clock skew.

Disclosure of Invention

The application provides a processing method, a device and a system of a TSN service, which are used for solving the clock deviation problem existing when a 5G network and the TSN are intercommunicated.

In a first aspect, the present application provides a method for processing a TSN service, where the method includes: the method comprises the steps that first equipment obtains a first scheduling parameter of a TSN service and TSN clock domain information corresponding to the TSN service, the first scheduling parameter is used for indicating time information of transmitting a message of the TSN service, and the first scheduling parameter is set based on a clock corresponding to the TSN clock domain information; the first device adjusts the first scheduling parameter according to a clock corresponding to the TSN clock domain information and a clock of a 5G system to obtain a second scheduling parameter, wherein the second scheduling parameter is set based on the clock of the 5G system; and the first equipment transmits the message of the TSN service according to the second scheduling parameter.

Based on the scheme, the first device can obtain a first scheduling parameter of the TSN service, clock domain information corresponding to the TSN service and a clock of the 5G system, and adjust the first scheduling parameter according to the clock corresponding to the TSN clock domain information and the clock of the 5G system to obtain a second scheduling parameter, wherein the second scheduling parameter is set based on the clock of the 5G system; and then transmitting the message of the TSN service according to the second scheduling parameter, wherein the first scheduling parameter corresponding to the TSN clock is converted into the second scheduling parameter corresponding to the clock of the 5G system, and the message of the TSN service is transmitted according to the second scheduling parameter, so that the message of the TSN service is correctly transmitted, and the improvement of the communication quality is facilitated.

In a possible implementation method, the adjusting, by the first device, the first scheduling parameter according to the clock corresponding to the TSN clock domain information and the clock of the 5G system to obtain a second scheduling parameter includes: the first device determines clock deviation according to the clock corresponding to the TSN clock domain information and the clock of the 5G system; and the first equipment adjusts the first scheduling parameter according to the clock deviation to obtain the second scheduling parameter.

In one possible implementation, the clock offset includes a time offset and/or a frequency offset between a clock corresponding to the TSN clock domain information and a clock of the 5G system.

In a possible implementation method, the adjusting, by the first device, the first scheduling parameter according to the clock offset to obtain the second scheduling parameter includes: the first device determines the time for starting execution of the gating operation cycle of the port in the time information indicated by the second scheduling parameter according to the time for starting execution of the gating operation cycle of the port in the time information indicated by the first scheduling parameter and the time deviation in the clock deviation; and the first equipment determines the duration of the gating state of the port in the time information indicated by the second scheduling parameter according to the duration of the gating state of the port in the time information indicated by the first scheduling parameter and the frequency deviation in the clock deviation.

In a possible implementation method, the acquiring, by the first device, a first scheduling parameter of a TSN service and TSN clock domain information corresponding to the TSN service includes: the first device acquires the first scheduling parameter and the TSN clock domain information from a session management network element in a session modification process; or, the first device obtains the TSN clock domain information from a database in a session establishment procedure, and obtains the first scheduling parameter from a session management network element in a session modification procedure.

In one possible implementation method, the time information includes a time at which a gating operation cycle of the port of the first device starts to be executed and a duration of a gating state of the port.

In a second aspect, the present application provides a method for processing a TSN service, where the method includes: the method comprises the steps that a second device obtains a first scheduling parameter of a TSN service and TSN clock domain information corresponding to the TSN service, wherein the first scheduling parameter is used for indicating time information of transmitting a message of the TSN service, and the first scheduling parameter is set based on a clock corresponding to the TSN clock domain information; and the second equipment sends the first scheduling parameter of the TSN service and the TSN clock domain information to the first equipment.

In a possible implementation method, the second device is a policy control network element; the second device obtains a first scheduling parameter of the TSN service, including: the second equipment acquires a first scheduling parameter of the TSN service from an application function network element; the second device obtains TSN clock domain information corresponding to the TSN service, including: the second device acquires TSN clock domain information corresponding to the TSN service from a database, the second device or an application function network element; the second device sends the first scheduling parameter of the TSN service and the TSN clock domain information to the first device, including: and the second device sends the first scheduling parameter of the TSN service and the TSN clock domain information to the first device through a session management network element.

In a possible implementation method, the second device is a session management network element; the second device obtains a first scheduling parameter of the TSN service, including: the second equipment acquires a first scheduling parameter of the TSN service from a policy control network element or an application function network element; the second device obtains TSN clock domain information corresponding to the TSN service, including: and the second equipment acquires TSN clock domain information corresponding to the TSN service from a database or the second equipment.

In a third aspect, the present application provides a method for processing a TSN service, where the method includes: the method comprises the steps that a first device receives a second scheduling parameter of a TSN service from a second device, wherein the second scheduling parameter is used for indicating time information of transmitting a message of the TSN service, the second scheduling parameter is determined according to a first scheduling parameter of the TSN service and a clock deviation, the clock deviation is determined according to a clock of a TSN clock domain corresponding to the TSN service and a clock of a 5G system, the first scheduling parameter is set based on the clock of the TSN clock domain, and the second scheduling parameter is set based on the clock of the 5G system; and the first equipment transmits the message of the TSN service according to the second scheduling parameter.

Based on the scheme, the second device can obtain a second scheduling parameter of the TSN service, the second scheduling parameter is set based on a clock of the 5G system, and the second device sends the second scheduling parameter to the first device, so that the first device can transmit a message of the TSN service according to the second scheduling parameter, correct transmission of the message of the TSN service by the access network is achieved, and the communication quality is improved.

In a fourth aspect, the present application provides a method for processing a TSN service, where the method includes: a second device acquires a second scheduling parameter of the TSN service, wherein the second scheduling parameter is set based on a clock of a 5G system, the second scheduling parameter is used for a first device to transmit a message of the TSN service, and the first device is a terminal device or a user plane network element; the second equipment determines a third scheduling parameter according to the second scheduling parameter, wherein the third scheduling parameter is set based on the clock of the 5G system, and the third scheduling parameter is used for the access network equipment to transmit the message of the TSN service; and the second equipment sends the third scheduling parameter to the access network equipment.

Based on the scheme, the second device can obtain a second scheduling parameter of the TSN service, the second scheduling parameter is set based on a clock of the 5G system, the second device determines a third scheduling parameter according to the second scheduling parameter, and sends the third scheduling parameter to the access network device, so that the access network device can transmit a message of the TSN service according to the third scheduling parameter.

In a possible implementation method, the acquiring, by the second device, the second scheduling parameter of the TSN service includes: the second device obtains a first scheduling parameter of the TSN service and TSN clock domain information corresponding to the TSN service, wherein the first scheduling parameter is used for indicating time information for transmitting a message of the TSN service, and the first scheduling parameter is set based on a clock corresponding to the TSN clock domain information; and the second equipment adjusts the first scheduling parameter according to the clock corresponding to the TSN clock domain information and the clock of the 5G system to obtain the second scheduling parameter.

In a possible implementation method, the adjusting, by the second device, the first scheduling parameter according to the clock corresponding to the TSN clock domain information and the clock of the 5G system to obtain the second scheduling parameter includes: the second device determines clock deviation according to the clock corresponding to the TSN clock domain information and the clock of the 5G system; and the second equipment adjusts the first scheduling parameter according to the clock deviation to obtain the second scheduling parameter.

In a possible implementation method, the adjusting, by the second device, the first scheduling parameter according to the clock offset to obtain the second scheduling parameter includes: the second device determines, according to the time at which the gating operation cycle of the port in the time information indicated by the first scheduling parameter starts to be executed and the time deviation in the clock deviation, the time at which the gating operation cycle of the port in the time information indicated by the second scheduling parameter starts to be executed; and the second equipment determines the duration of the gating state of the port in the time information indicated by the second scheduling parameter according to the duration of the gating state of the port in the time information indicated by the first scheduling parameter and the frequency deviation in the clock deviation.

In a possible implementation method, the acquiring, by the second device, the first scheduling parameter of the TSN service includes: the second device is an application function network element, and the second device acquires the first scheduling parameter from a centralized network configuration network element; or, the second device is a session management network element, and the second device obtains the first scheduling parameter from a policy control network element or an application function network element.

In a possible implementation method, the acquiring, by the second device, the second scheduling parameter of the TSN service includes: and the second device is a session management network element, and the second device acquires the second scheduling parameter from an application function network element or a policy control network element.

In a possible implementation method, the second device sends the second scheduling parameter to the first device.

In a possible implementation method, the second scheduling parameter is used to indicate time information for transmitting a packet of the TSN service, where the time information includes a time when a gating operation cycle of a port of the first device starts to be executed and a duration of a gating state of the port.

In a possible implementation method, the determining, by the second device, the third scheduling parameter according to the second scheduling parameter includes: the TSN service is a downlink TSN service, and the second device determines the third scheduling parameter according to the second scheduling parameter, the residence time information of the TSN service message on the terminal device side, and the transmission delay information of the TSN service message between the terminal device and the access network device; or, the TSN service is an uplink TSN service, and the third scheduling parameter is determined according to the second scheduling parameter, the residence time information of the TSN service packet at the user plane network element side, and the transmission delay information of the TSN service packet between the terminal device and the user plane network element.

In a fifth aspect, the present application provides a device for processing a TSN service, where the device may be a first device (such as a terminal device or a user plane network element), and may also be a chip for a second device. The apparatus has the function of implementing the embodiments of the first aspect described above. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In a sixth aspect, the present application provides a device for processing a TSN service, where the device may be a second device (such as a session management network element or a policy control network element), and may also be a chip for the second device. The apparatus has the function of implementing the embodiments of the second aspect described above. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In a seventh aspect, the present application provides a device for processing a TSN service, where the device may be a first device (such as a terminal device or a user plane network element), and may also be a chip for the first device. The apparatus has a function of realizing the embodiments of the third aspect described above. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In an eighth aspect, the present application provides a processing apparatus for TSN traffic, where the apparatus may be a second device (such as a session management network element or an application function network element), and may also be a chip for the second device. The apparatus has a function of realizing the embodiments of the fourth aspect described above. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In a ninth aspect, the present application provides a processing apparatus for TSN traffic, including: a processor and a memory; the memory is used to store computer executable instructions that when executed by the processor cause the apparatus to perform the method as described in the preceding aspects.

In a tenth aspect, the present application provides a processing apparatus for a TSN service, including: comprising means or units for performing the steps of the above-mentioned aspects.

In an eleventh aspect, the present application provides a processing device for TSN traffic, comprising a processor and an interface circuit, wherein the processor is configured to communicate with other devices through the interface circuit, and to perform the method according to the above aspects. The processor includes one or more.

In a twelfth aspect, the present application provides a processing apparatus for TSN traffic, including a processor, connected to a memory, and configured to call a program stored in the memory to execute the method in the foregoing aspects. The memory may be located within the device or external to the device. And the processor includes one or more.

In a thirteenth aspect, the present application also provides a computer-readable storage medium having stored therein instructions, which, when executed on a computer, cause the processor to perform the method of the above-mentioned aspects.

In a fourteenth aspect, the present application also provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the above aspects.

In a fifteenth aspect, the present application further provides a chip system, comprising: a processor configured to perform the method of the above aspects.

In a sixteenth aspect, the present application further provides a system for processing a TSN service, including: a first device for performing the method of any of the above first aspects and a second device for performing the method of any of the above second aspects.

In a seventeenth aspect, the present application further provides a system for processing a TSN service, including: a first apparatus for performing the method of any of the above third aspects and a second apparatus for performing the method of any of the above fourth aspects.

In an eighteenth aspect, the present application further provides a method for processing a TSN service, including:

the method comprises the steps that a second device obtains a first scheduling parameter of a TSN service and TSN clock domain information corresponding to the TSN service, wherein the first scheduling parameter is used for indicating time information of transmitting a message of the TSN service, and the first scheduling parameter is set based on a clock corresponding to the TSN clock domain information;

the second device sends the first scheduling parameter of the TSN service and the TSN clock domain information to the first device;

the first equipment adjusts the first scheduling parameter according to the clock corresponding to the TSN clock domain information and the clock of the 5G system to obtain a second scheduling parameter;

and the first equipment transmits the message of the TSN service according to the second scheduling parameter.

In a nineteenth aspect, the present application further provides a method for processing a TSN service, including:

a second device acquires a second scheduling parameter of the TSN service, wherein the second scheduling parameter is set based on a clock of a 5G system, the second scheduling parameter is used for a first device to transmit a message of the TSN service, and the first device is a terminal device or a user plane network element;

the second equipment determines a third scheduling parameter according to the second scheduling parameter, wherein the third scheduling parameter is set based on the clock of the 5G system, and the third scheduling parameter is used for the access network equipment to transmit the message of the TSN service;

and the second equipment sends the third scheduling parameter to the access network equipment.

And the access network equipment transmits the message of the TSN service according to the third scheduling parameter.

In a twentieth aspect, the present application further provides a method for processing a TSN service, including:

the method comprises the steps that a second device obtains a first scheduling parameter of the TSN service and TSN clock domain information corresponding to the TSN service, the first scheduling parameter is used for indicating time information of transmitting a message of the TSN service, and the first scheduling parameter is set based on a clock corresponding to the TSN clock domain information;

the second equipment adjusts the first scheduling parameter according to the clock corresponding to the TSN clock domain information and the clock of the 5G system to obtain a second scheduling parameter;

and the second equipment sends the second scheduling parameter to the first equipment.

Drawings

Fig. 1A is a schematic diagram of a system for processing a TSN service provided in the present application;

fig. 1B is a schematic diagram of another TSN service processing system provided in the present application;

FIG. 2A is a schematic diagram of a 5G network architecture based on a service-oriented architecture;

FIG. 2B is a diagram of a fully centralized TSN system architecture;

FIG. 3A is a schematic diagram of an interworking system between a 5G network and a TSN;

FIG. 3B is a specific example of a 5G network and TSN interworking system;

fig. 4 is a schematic diagram of a processing method of a TSN service provided in the present application;

fig. 5 is a schematic diagram of another processing method for a TSN service provided in the present application;

fig. 6 is a schematic diagram of another processing method for a TSN service provided in the present application;

fig. 7 is a schematic diagram of another processing method for a TSN service provided in the present application;

fig. 8 is a schematic diagram of another processing method for a TSN service provided in the present application;

fig. 9 is a schematic diagram of another processing method for a TSN service provided in the present application;

fig. 10 is a schematic diagram illustrating a processing method of another TSN service provided in the present application;

fig. 11 is a schematic diagram of another processing method for a TSN service provided in the present application;

fig. 12 is a schematic diagram of another processing apparatus for TSN service provided in the present application;

fig. 13 is a schematic diagram of another processing apparatus for TSN service provided in the present application;

fig. 14 is a schematic diagram of another processing apparatus for a TSN service provided in the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more clear, the present application will be further described in detail with reference to the accompanying drawings. The particular methods of operation in the method embodiments may also be applied to apparatus embodiments or system embodiments. In the description of the present application, the term "plurality" means two or more unless otherwise specified.

Fig. 1A is a schematic diagram of a system for processing a TSN service provided by the present application. The system includes a first device and a second device. The first device may be a terminal device or a user plane network element, and the second device may be a session management network element or a policy control network element. The terminal device, the user plane network element, the session management network element, and the policy control network element may be a terminal device, a user plane network element, a session management network element, and a policy control network element in a 5G system, or may also be a terminal device, a user plane network element, a session management network element, and a policy control network element in a future communication system, which is not limited in this application.

Wherein, first equipment and second equipment possess the following function:

the second device is used for acquiring a first scheduling parameter of the TSN service and TSN clock domain information corresponding to the TSN service, wherein the first scheduling parameter is used for indicating time information for transmitting a message of the TSN service, and the first scheduling parameter is set based on a clock corresponding to the TSN clock domain information; sending a first scheduling parameter of the TSN service and the TSN clock domain information to a first device;

the first device is used for adjusting the first scheduling parameter according to a clock corresponding to the TSN clock domain information and a clock of a 5G system to obtain a second scheduling parameter, and the second scheduling parameter is set based on the clock of the 5G system; and transmitting the message of the TSN service according to the second scheduling parameter.

In a possible implementation method, the second device is a policy control network element; the second device is configured to obtain a first scheduling parameter of a TSN service and TSN clock domain information corresponding to the TSN service, and specifically includes: the second device is configured to obtain a first scheduling parameter of the TSN service from an application function network element; acquiring TSN clock domain information corresponding to the TSN service from a database, the second device or an application function network element; the second device is configured to send the first scheduling parameter of the TSN service and the TSN clock domain information to the first device, and specifically includes: the second device is configured to send the first scheduling parameter of the TSN service and the TSN clock domain information to the first device through a session management network element.

In a possible implementation method, the second device is a session management network element; the second device is configured to obtain a first scheduling parameter of a TSN service and TSN clock domain information corresponding to the TSN service, and specifically includes: the second device is configured to obtain a first scheduling parameter of the TSN service from a policy control network element or an application function network element; and acquiring TSN clock domain information corresponding to the TSN service from a database or the second equipment.

In a possible implementation method, the adjusting, by the first device, the first scheduling parameter according to the clock corresponding to the TSN clock domain information and the clock of the 5G system to obtain a second scheduling parameter specifically includes: the first device is used for determining clock deviation according to the clock corresponding to the TSN clock domain information and the clock of the 5G system; and adjusting the first scheduling parameter according to the clock deviation to obtain the second scheduling parameter.

In a possible implementation method, the adjusting, by the first device, the first scheduling parameter according to the clock offset to obtain the second scheduling parameter specifically includes: the first device is configured to determine, according to the time at which the gating operation cycle of the port in the time information indicated by the first scheduling parameter starts to be executed and the time offset in the clock offset, the time at which the gating operation cycle of the port in the time information indicated by the second scheduling parameter starts to be executed; and determining the duration of the gating state of the port in the time information indicated by the second scheduling parameter according to the duration of the gating state of the port in the time information indicated by the first scheduling parameter and the frequency deviation in the clock deviation.

Based on the system shown in fig. 1A, the first device may obtain a first scheduling parameter of the TSN service, clock domain information corresponding to the TSN service, and a clock of the 5G system, and adjust the first scheduling parameter according to the clock corresponding to the TSN clock domain information and the clock of the 5G system to obtain a second scheduling parameter, where the second scheduling parameter is set based on the clock of the 5G system; and then transmitting the message of the TSN service according to the second scheduling parameter, wherein the first scheduling parameter corresponding to the TSN clock is converted into the second scheduling parameter corresponding to the clock of the 5G system, and the message of the TSN service is transmitted according to the second scheduling parameter, so that the message of the TSN service is correctly transmitted, and the improvement of the communication quality is facilitated.

For a specific implementation process of the first device and the second device in the system shown in fig. 1A for the processing method of the TSN service provided by this application, reference may be made to the following description of the method embodiments in fig. 4, fig. 6, and fig. 7, which is not described herein again.

Fig. 1B is a schematic diagram of a system for processing another TSN service provided by the present application. The system comprises an access network device and a second device, optionally the system further comprises a first device. The first device may be a terminal device or a user plane network element, and the second device may be a session management network element or an application function network element. The terminal device, the access network device, the user plane network element, the session management network element, and the application function network element may be terminal devices, access network devices, user plane network elements, session management network elements, and application function network elements in a 5G system, or may be terminal devices, access network devices, user plane network elements, session management network elements, and application function network elements in a future communication system, which is not limited in this application.

Wherein, first equipment and second equipment possess the following function:

the second device is used for acquiring a second scheduling parameter of the TSN service, wherein the second scheduling parameter is set based on a clock of a 5G system, the second scheduling parameter is used for the first device to transmit a message of the TSN service, and the first device is a terminal device or a user plane network element; determining a third scheduling parameter according to the second scheduling parameter, wherein the third scheduling parameter is set based on a clock of the 5G system, and the third scheduling parameter is used for transmitting the message of the TSN service by the access network equipment; sending the third scheduling parameter to the access network device;

and the access network equipment is used for transmitting the message of the TSN service according to the third scheduling parameter.

In a possible implementation method, the second device is configured to obtain a second scheduling parameter of a TSN service, and specifically includes: the second device is configured to obtain a first scheduling parameter of the TSN service and TSN clock domain information corresponding to the TSN service, where the second scheduling parameter is used to indicate time information for transmitting a packet of the TSN service, and the first scheduling parameter is set based on a clock corresponding to the TSN clock domain information; and adjusting the first scheduling parameter according to the clock corresponding to the TSN clock domain information and the clock of the 5G system to obtain the second scheduling parameter.

In a possible implementation method, the second device is configured to adjust the first scheduling parameter according to a clock corresponding to the TSN clock domain information and a clock of the 5G system, to obtain the second scheduling parameter, and specifically includes: the second device is used for determining clock deviation according to the clock corresponding to the TSN clock domain information and the clock of the 5G system; and adjusting the first scheduling parameter according to the clock deviation to obtain the second scheduling parameter.

In a possible implementation method, the second device is configured to adjust the first scheduling parameter according to the clock offset to obtain the second scheduling parameter, and specifically includes: the second device is configured to determine, according to the time at which the gating operation cycle of the port in the time information indicated by the first scheduling parameter starts to be executed and the time offset in the clock offset, the time at which the gating operation cycle of the port in the time information indicated by the second scheduling parameter starts to be executed; and determining the duration of the gating state of the port in the time information indicated by the second scheduling parameter according to the duration of the gating state of the port in the time information indicated by the first scheduling parameter and the frequency deviation in the clock deviation.

In a possible implementation method, the second device is an application function network element, and the second device is configured to obtain the first scheduling parameter of the TSN service, and specifically includes: the second device is configured to obtain the first scheduling parameter from a centralized network configuration network element; or, the second device is a session management network element, and the second device is specifically configured to obtain the first scheduling parameter from a policy control network element or an application function network element.

In a possible implementation method, the second device is a session management network element, and the second device is configured to obtain a first scheduling parameter of the TSN service, and specifically includes: the second device is configured to obtain the second scheduling parameter from an application function network element or a policy control network element.

In a possible implementation method, the second device is further configured to send the second scheduling parameter to the first device; and the first device is configured to transmit the message of the TSN service according to the second scheduling parameter.

In a possible implementation method, the second device is configured to determine a third scheduling parameter according to the second scheduling parameter, and specifically includes: the TSN service is a downlink TSN service, and the second device is configured to determine the third scheduling parameter according to the second scheduling parameter, the residence time information of the TSN service packet at the terminal device side, and the transmission delay information of the TSN service packet between the terminal device and the access network device; or, the TSN service is an uplink TSN service, and the second device is configured to determine the third scheduling parameter according to the second scheduling parameter, the residence time information of the TSN service packet on the user plane network element side, and the transmission delay information of the TSN service packet between the terminal device and the user plane network element.

Based on the system shown in fig. 1B, the second device may obtain a second scheduling parameter of the TSN service, where the second scheduling parameter is set based on a clock of the 5G system, and the second device determines a third scheduling parameter according to the second scheduling parameter and sends the third scheduling parameter to the access network device, so that the access network device may transmit a message of the TSN service according to the third scheduling parameter, and further, the second device may send the second scheduling parameter to the first device, so that the first device may transmit the message of the TSN service according to the second scheduling parameter, thereby implementing correct transmission of the message of the TSN service by the access network, and facilitating improvement of communication quality.

For a specific implementation process of the first device and the second device in the system shown in fig. 1B for the processing method of the TSN service provided by this application, reference may be made to the following description of the method embodiments in fig. 5, fig. 8 to fig. 10, and details are not repeated here.

Fig. 2A is a schematic diagram of a 5G network architecture based on a service-oriented architecture. The 5G network architecture shown in fig. 2A may include three parts, which are a terminal device part, a Data Network (DN) and an operator network part.

The operator network may include a network open function (NEF) network element, a Unified Data Repository (UDR), a Policy Control Function (PCF) network element, a Unified Data Management (UDM) network element, AN Application Function (AF) network element, AN access and mobility management function (AMF) network element, a Session Management Function (SMF) network element, a (radio) access network (R) AN, and a user plane function (user plane function, UPF) network element. In the operator network described above, the parts other than the (radio) access network part may be referred to as core network parts. For convenience of description, the (R) AN will be referred to as RAN as AN example.

A terminal device (also referred to as User Equipment (UE)) is a device with a wireless transceiving function, and can be deployed on land, including indoors or outdoors, and handheld or vehicle-mounted; can also be deployed on the water surface (such as a ship and the like); and may also be deployed in the air (e.g., airplanes, balloons, satellites, etc.). The terminal device may be a mobile phone (mobile phone), a tablet computer (pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal, an Augmented Reality (AR) terminal, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and the like.

The terminal device may establish a connection with the carrier network through an interface (e.g., N1, etc.) provided by the carrier network, and use data and/or voice services provided by the carrier network. The terminal device may also access the DN via an operator network, use operator services deployed on the DN, and/or services provided by a third party. The third party may be a service party other than the operator network and the terminal device, and may provide services such as data and/or voice for the terminal device. The specific expression form of the third party may be determined according to an actual application scenario, and is not limited herein.

AN Access Network device, also called a (Radio) Access Network (R) AN device, is a device that provides a terminal with a wireless communication function. Access network equipment includes, for example but not limited to: next generation base station (G node B, gNB), evolved node B (eNB), Radio Network Controller (RNC), Node B (NB), Base Station Controller (BSC), Base Transceiver Station (BTS), home base station (e.g., home evolved node B, or home node B, HNB), Base Band Unit (BBU), transmission point (TRP), Transmission Point (TP), mobile switching center, etc. in 5G.

The AMF network element is a control plane network element provided by an operator network and is responsible for access control and mobility management of terminal equipment accessing the operator network, for example, including functions of mobility state management, user temporary identity assignment, user authentication and authorization, and the like.

The SMF network element is a control plane network element provided by an operator network and is responsible for managing a Protocol Data Unit (PDU) session of the terminal device. A PDU session is a channel for transmitting PDUs, and a terminal device needs to transfer PDUs to and from the DN through the PDU session. The PDU session is established, maintained, deleted and the like by the SMF network element. SMF network elements include Session-related functions such as Session establishment, modification and release, including tunnel maintenance between the UPF and RAN, selection and control of UPF network elements, Service and Session Continuity (SSC) mode selection, roaming, etc.

The UPF network element is a gateway provided by the operator, which is a gateway for the operator network to communicate with the DN. The UPF network element comprises user plane related functions such as data packet routing and transmission, packet detection, Service usage reporting, Quality of Service (QoS) processing, legal monitoring, uplink packet detection, downlink data packet storage and the like.

A DN, which may also be referred to as a Packet Data Network (PDN), is a network located outside an operator network, where the operator network may access multiple DNs, and multiple services may be deployed on the DNs, so as to provide services such as data and/or voice for a terminal device. For example, the DN is a private network of a certain intelligent factory, a sensor installed in a workshop of the intelligent factory can be a terminal device, a control server of the sensor is deployed in the DN, and the control server can provide services for the sensor. The sensor can communicate with the control server, obtain the instruction of the control server, transmit the sensor data gathered to the control server, etc. according to the instruction. For another example, the DN is an internal office network of a company, the mobile phone or computer of the employee of the company may be a terminal device, and the mobile phone or computer of the employee may access information, data resources, and the like on the internal office network of the company.

The UDM network element is a control plane network element provided by an operator, and is responsible for storing information such as a user permanent identifier (SUPI), a security context (security context), and subscription data of a subscription user in an operator network. These information stored by the UDM network element can be used for authentication and authorization of the terminal device to access the operator network. The subscriber of the operator network may be specifically a user using a service provided by the operator network, for example, a user using a mobile phone core card of china telecommunications, or a user using a mobile phone core card of china mobile, and the like. The above-mentioned Permanent Subscription Identifier (SUPI) of the subscriber may be the number of the mobile phone core card, etc. The credentials and security context of the subscriber may be a small file stored with an encryption key of the core card of the mobile phone or information related to encryption of the core card of the mobile phone, and used for authentication and/or authorization. The security context may be data (cookie) or token (token) stored on the user's local terminal (e.g., cell phone), etc. The subscription data of the subscriber may be a service associated with the mobile phone core card, such as a traffic package or a network using the mobile phone core card. It should be noted that the information related to the permanent identifier, the credentials, the security context, the authentication data (cookie), and the token equivalent authentication and authorization are not distinguished or limited in the present application for convenience of description. Unless otherwise specified, the embodiments of the present application will be described in the context of security, but the embodiments of the present application are also applicable to authentication, and/or authorization information in other expressions.

The NEF network element is a control plane network element provided by an operator. The NEF network element opens the external interface of the operator network to the third party in a secure manner. When the SMF network element needs to communicate with a network element of a third party, the NEF network element may serve as a relay for the communication between the SMF network element and the network element of the third party. When the NEF network element is used as a relay, it can be used as a translation of the identification information of the subscriber and a translation of the identification information of the network element of the third party. For example, when NEF sends the SUPI of a subscriber from the carrier network to a third party, the SUPI may be translated into its corresponding external Identity (ID). Conversely, when the NEF element sends an external ID (the third party's element ID) to the operator network, it can be translated to SUPI.

The PCF network element is a control plane function provided by the operator for providing the policy of the PDU session to the SMF network element. The policies may include charging related policies, QoS related policies, authorization related policies, and the like.

The AF network element is a functional network element for providing various service services, can interact with a core network through the NEF network element, and can interact with a policy management framework for policy management.

UDRs are used to store data.

In fig. 2A, Nnef, Npcf, Nudm, Naf, nurr, Namf, Nsmf, N1, N2, N3, N4, and N6 are interface serial numbers. The meaning of these interface sequence numbers can be referred to as that defined in the 3GPP standard protocol, and is not limited herein.

It is to be understood that the above network elements or functions may be network elements in a hardware device, or may be software functions running on dedicated hardware, or virtualization functions instantiated on a platform (e.g., a cloud platform). Optionally, the network element or the function may be implemented by one device, or may be implemented by multiple devices together, or may be a functional module in one device, which is not specifically limited in this embodiment of the present application.

In the forwarding process of the conventional ethernet network, when a large amount of data packets arrive at a forwarding port in a moment, the problem of large forwarding delay or packet loss is caused, so that the conventional ethernet network cannot provide a service with high reliability and guaranteed transmission delay, and cannot meet the requirements in the fields of automobile control, industrial internet and the like. The Institute of Electrical and Electronics Engineers (IEEE) has defined a related TSN standard for the requirement of reliable delay transmission, which provides reliable delay transmission service based on two-layer switching, ensures the reliability of delay-sensitive traffic data transmission, and predictable end-to-end transmission delay.

IEEE802.1 cc defines 3 configuration models for TSNs, one of which is a fully centralized TSN system architecture. As shown in fig. 2B, the fully Centralized TSN system architecture diagram includes a TSN terminal (TSN End Station), a TSN switch node (TSN Bridge), a Centralized User Configuration (CUC) Network element and a Centralized Network Configuration (CNC) Network element, which are hereinafter referred to as CUC and CNC for short. Wherein, the CUC and the CNC belong to a network element of a control plane.

Wherein:

1) the TSN terminal is a sending end or a receiving end of the data stream;

2) the TSN switching node reserves resources for the data stream according to the definition of the TSN, and schedules and forwards the data message;

3) the CNC manages the topology of the TSN user plane and the capability information of the TSN switch node (e.g., the transmission delay of the TSN switch node (the time elapsed from the TSN stream being sent from the port of the current TSN switch node to the TSN stream reaching the port of the next hop switch node), the internal processing delay between the ports of the TSN switch node (the time elapsed from the TSN stream entering from the ingress port of the current TSN switch node to the egress port of the TSN switch node)).

4) The CNC creates a TSN stream forwarding rule according to a stream creation request message provided by the CUC so as to generate a forwarding path of a data stream, generates a scheduling policy or a scheduling rule (including a port (also referred to as a receiving port) and an egress port (also referred to as a transmitting port) for receiving and transmitting a message corresponding to a TSN stream or a TSN traffic class (traffic class) in which one or more TSN streams are aggregated), on the TSN terminal and each TSN switching node, and then issues the scheduling policy or the scheduling rule on the TSN switching node to the corresponding TSN switching node; and the scheduling strategy or the scheduling rule on each TSN switching node is determined by the CNC according to the network topology information and the capability information reported by each TSN switching node.

After the CNC creates the TSN stream forwarding rule, the CNC may determine a forwarding path of the stream on the TSN switching node by issuing a Static table (Static filtering entries) to the TSN switching node. The information of the static table includes a destination Media Access Control (MAC) address of the TSN stream, an identifier of a receiving port and an identifier of a transmitting port of the TSN stream on the TSN switching node, and optionally, the information of the static table further includes a Virtual Local Area Network (VLAN) Identifier (ID).

It should be noted that the above-mentioned CNC has different expressions of the scheduling policy or scheduling rule sent to the switching node, depending on different scheduling algorithms defined by the TSN system. Taking the scheduling algorithm defined by the ieee802.1qbv as an example, the CNC sends the scheduling parameters defined by the ieee802.1qbv to the switch node, including the gating information of the TSN switch node port, which may include the time when the gating operation period of the port starts to be executed (i.e., addbasetime in the ieee802.1qbv), the gating state of the queue (i.e., GateStateValue in the ieee802.1qbv), and the duration of the gating state (i.e., TimeIntervalValue in the ieee802.1qbv). The switching node determines the sending time window and sending period of the output port according to the scheduling parameter, optionally, the receiving time window of the input port may also be determined.

5) The CUC is configured to collect a stream creation request of the TSN terminal, such as receiving registration of a TSN sending terminal (Talker) and a TSN receiving terminal (Listener), receiving stream information, exchanging configuration parameters, and the like, and after matching the requests of the TSN sending terminal and the TSN receiving terminal, requesting to create a data stream to the CNC, and confirming a scheduling policy generated by the CNC.

Fig. 3A is a schematic diagram of an interworking system between a 5G system and a TSN. That is, the 5G architecture shown in fig. 2A and the TSN architecture shown in fig. 2B are combined, and the 5G system and the TSN converter (TSN Translator) are used as a logical TSN switching node (referred to as a 5G system switching node) as a whole, so as to implement the assumption of the function of the switching node in the TSN. The TSN converter means to convert the characteristics and information of the 5G network and information adapted to the TSN requirement to be provided to the TSN system, or to convert the information required by the TSN system to the characteristics or information for the 5G network to be provided to the 5G system. Fig. 3A only shows a part of network elements (i.e., an AMF network element, an SMF network element, a PCF network element, a RAN, a UE, an AF network element, and a UPF network element) in the 5G architecture.

1) And at the control plane, the 5G system exchanges information with a node in the TSN system through a TSN converter (i.e. an AF network element of the 5G) of the control plane, where the exchanged information includes: capability information of the 5G system switching node, TSN configuration information (including time scheduling information of the TSN input/output port), and the like.

The AF network element provides the capability information of the 5G system switching node to a CNC in the TSN system, and the CNC determines TSN configuration information of the 5G system switching node for the TSN service according to the capability information of the 5G system switching node and the capability information of other TSN switching nodes. And the AF network element provides the TSN configuration information which is determined by the CNC and aims at the 5G system switching node to the 5G system switching node.

The capability information of the 5G system switching node comprises internal processing time delay of the 5G system switching node, UE side transmission time delay of the 5G system switching node and UPF side transmission time delay of the 5G system switching node. The internal processing delay of the 5G system switching node further includes a UE side residence time (i.e., a processing residence time of the TSN packet in the UE and the TSN converter on the UE side), an UPF side residence time (i.e., a processing residence time of the TSN packet in the UPF and the TSN converter on the UPF side), and a transmission delay between the UE and the UPF, which is specifically expressed as a packet delay budget (PDB, packet delay bucket) of the TSN packet between the UE and the UPF.

2) On the user plane, the UPF network element of the 5G system receives the downlink TSN stream of the TSN system or transmits the uplink TSN stream to the TSN system through the TSN converter, wherein the TSN converter may be integrated with the UPF network element or deployed independently of the UPF network element.

3) In the user plane, the UE of the 5G system receives the uplink TSN stream of the TSN system or transmits the downlink TSN stream to the TSN system through the TSN converter, where the TSN converter may be integrated with the UE or deployed independently of the UE.

The present solution is described with respect to the network architecture shown in fig. 3A.

As an example, the user plane network element in the present application may be a network element having a function of the UPF network element shown in fig. 3A, and the TSN converter may be integrated in the user plane network element, or the TSN converter is deployed independently from the user plane network element. For convenience of description, the user plane network element is referred to as a UPF in the following description of the present application, and it should be noted that in future communications, the user plane network element may still be referred to as a UPF network element, or may also have another name, which is not limited in the present application. UPF appearing at any position in the application can be replaced by a user plane network element.

As an example, the session management network element in the present application may be a network element having the function of the SMF network element shown in fig. 3A or fig. 2A. For convenience of description, the session management network element is referred to as an SMF in the following description of the present application, and it should be noted that in future communications, the session management network element may still be referred to as an SMF network element, or may also have another name, which is not limited in the present application. The SMF appearing at any subsequent place in the application can be replaced by a session management network element.

As an example, the policy control network element in this application refers to a network element having the function of the PCF network element shown in fig. 3A or fig. 2A. For convenience of description, in the following description of the present application, the policy control network element is referred to as PCF, it should be noted that in future communications, the policy control network element may still be referred to as PCF network element, or may have other names, and the present application is not limited thereto. PCF appearing at any position in the application can be replaced by a strategy control network element.

As an example, the application function network element in the present application may be a network element having the function of the AF network element shown in fig. 3A or fig. 2A. For convenience of description, the application function network element is referred to as an AF in the following description of the present application, it should be noted that in future communications, the application function network element may still be referred to as an AF network element, or may also have other names, and the present application is not limited thereto. AF appearing at any subsequent place of the application can be replaced by an application function network element.

As an example, the database in the present application may be a network element having the function of the UDR shown in fig. 2A. For convenience of description, the database is referred to as UDR in the following description of the present application, it should be noted that in future communications, the database may still be referred to as UDR, or may have other names, and the present application is not limited thereto. UDRs occurring anywhere in the application follow-up may be replaced with a database.

As an example, the terminal device in the present application may be a device having the function of the UE shown in fig. 3A, and the terminal device may have a TSN converter integrated therein, or the TSN converter is disposed separately from the terminal device. For convenience of explanation, the terminal device is referred to as UE in the following description of the present application.

For the network architecture shown in fig. 3A, the CNC configures a scheduling policy or a scheduling rule for TSN traffic to each switching node (including the 5G system switching node and other TSN switching nodes) according to information reported by the 5G system switching node and other TSN switching nodes, and the 5G system switching node and other TSN switching nodes may determine a scheduling parameter corresponding to a port according to gating information included in the scheduling policy or the scheduling rule, including: the port transmits and/or receives the TSN service message in the determined time window according to the configuration of the CNC, removes delay jitter and ensures the deterministic transmission of the TSN service. As another implementation, the CNC may also directly issue the scheduling parameter to each switching node. For a 5G system switching node, its ports include the ports of the TSN converter on the UE or UE side and the ports of the TSN converter on the UPF or UPF side.

Following behavior example, CNC sends scheduling parameter of TSN service to PCF through AF, PCF then provides scheduling parameter as part of QoS parameter in policy information to SMF, SMF then issues to UE, TSN converter at UE side sends TSN stream at corresponding egress port according to gating information defined in scheduling parameter.

In order to optimize the support of the RAN to scheduling the air interface resources to ensure that the 5G system switching node supports the deterministic transmission of the TSN service, the RAN may also provide the scheduling parameters of the TSN service to the RAN, and the RAN schedules the air interface resources and performs admission control according to the scheduling parameters, for example, prepares the air interface resources in advance, or directly discards downlink TSN service messages or means that the UE discards uplink service messages to save the air interface resources when it is found that the actual arrival time of the TSN service messages is later than the time window defined by the scheduling parameters, thereby ensuring that the UE or the UPF can receive the TSN service messages in time.

In the current prior art, a 5G system supports a clock domain and a plurality of TSN clock domains of the 5G system, and one TSN terminal supports one TSN clock domain. Because the 5G system switching node performs clock synchronization with the clock of the 5G system as a reference, the clock domains between the 5G system switching node and the TSN terminal are different, and the clock deviation is caused. This is explained below with reference to an example.

As shown in fig. 3B, it is a specific example of a system for interworking a 5G network with a TSN. The switching node of the 5G system supports a 5G clock domain, a TSN clock domain 1 and a TSN clock domain 2, a TSN terminal 1 and a TSN terminal 2 support the TSN clock domain 1, and a TSN terminal 3 and a TSN terminal 4 support the TSN clock domain 2.

Since TSN terminal 1 and TSN terminal 2 support TSN clock domain 1, the scheduling parameters of the TSN traffic applied to TSN terminal 1 and TSN terminal 2 are set with reference to the clock of TSN clock domain 1. Similarly, the scheduling parameters of TSN traffic for applications on TSN terminals 3 and 4 are set with reference to the clock of TSN clock domain 2.

For example, when the TSN terminal 1 transmits the TSN stream to the TSN terminal 2, the CNC transmits a scheduling parameter of the TSN traffic (the scheduling parameter is set with reference to the clock of the TSN clock domain 1) to the 5G system switching node, and the 5G system switching node understands the scheduling parameter according to the 5G clock domain, thereby causing a problem of clock skew.

In addition, it should be noted that, as described above, the scheduling policy or the scheduling rule issued by the CNC to each TSN switching node is determined by the CNC according to the network topology information and the capability information reported by each TSN switching node, and the capability information of the TSN switching node includes time-related information such as transmission delay of the TSN switching node, internal processing delay between ports of the TSN switching node, and the like.

That is, the 5G system switching node, as a virtual switching node with TSN switching node enabling function, also provides its capability information to the CNC, so that the CNC determines TSN configuration information of the 5G system switching node for TSN traffic according to the capability information of the 5G system switching node and the capability information of other TSN switching nodes.

The capability information of the 5G system switching node may include transmission delay of the 5G system switching node and internal processing delay of the 5G system switching node, and the internal processing delay of the 5G system switching node is referred to time of a clock source of a 5G clock domain, and the CNC directly determines the TSN configuration information according to the delay information, and a problem of clock deviation may also occur, thereby affecting implementation of deterministic transmission.

For example, the internal processing delay of the 5G system switching node reported by the 5G system is 5ms, and if the frequency deviation between the 5G clock and the time of the clock domain corresponding to the TSN terminal is considered, the internal processing delay is 5.01ms with the clock of the TSN clock domain as a reference.

Therefore, the SMF or AF should perform conversion processing on the delay information included in the switching node capability information reported by the 5G system, convert the delay information into delay information corresponding to the TSN clock, and report the delay information to the CNC, so that the CNC determines a scheduling policy and a scheduling rule according to the delay information of the switching node of the 5G system with the clock of the TSN clock domain as a reference, and ensures deterministic transmission of the TSN service. Specifically, the SMF or the AF may acquire a clock offset between the 5G clock and a clock of the TSN clock domain, and convert the collected delay information of the 5G system switching node based on the 5G clock into the delay information of the 5G system switching node based on the clock of the TSN clock domain as a reference according to the clock offset.

To facilitate understanding of the present application, some terms or expressions appearing in the present application are explained below.

Clock skew

Clock skew in this application refers to the skew between the clock of the TSN clock domain and the clock of the 5G system. The clock bias may include a time bias and a frequency bias.

The TSN Clock Domain information may be a TSN Clock Domain identifier (Clock Domain ID), and the first device may determine the TSN Clock according to the TSN Clock Domain identifier, and further determine the time of the TSN Clock according to the TSN Clock.

In the present application, a clock of a 5G system may also be referred to as a 5G clock, a clock of a 5G clock domain, and a clock corresponding to 5G clock domain information, and these terms have the same meaning. In this application, a clock in the TSN clock domain may also be referred to as a TSN clock, a clock corresponding to the TSN clock domain information, or a clock synchronized with the clock source in the TSN clock domain as a reference, and these terms have the same meaning.

Second, scheduling parameter

In this application, the scheduling parameter is used to indicate a port of the UE, a port of a TSN converter corresponding to the UE, a port of a UPF, a port of a TSN converter corresponding to the UPF, or a port of a RAN, and is used to refer to time information when processing a TSN stream.

Hereinafter, a port of the UE or a port of the TSN converter corresponding to the UE is collectively referred to as a port of the UE, and a port of the UPF or a port of the TSN converter corresponding to the UPF is collectively referred to as a port of the UPF.

In this application, the scheduling parameters include a first scheduling parameter, a second scheduling parameter, a third scheduling parameter, and a fourth scheduling parameter. The following are described separately.

1. First scheduling parameter and second scheduling parameter

The first scheduling parameter is used for indicating the time information of transmitting the message of the TSN service, the second scheduling parameter is also used for indicating the time information of transmitting the message of the TSN service, but the first scheduling parameter is set based on the clock of the TSN clock domain, and the second scheduling parameter is set based on the clock of the 5G system. And the UE/UPF can transmit the message of the TSN service according to the second scheduling parameter. The time information indicated by the first scheduling parameter and/or the second scheduling parameter herein includes a time at which a gating operation cycle of a port of the UE/UPF starts to be executed and a duration of a gating state of the port of the UE/UPF, and optionally, may further include gating state information of the port of the UE/UPF.

The UE/UPF transmits the message of the TSN service according to the second scheduling parameter, for example, the UE/UPF determines at least one of a transmission time window, a reception time window, and a service period of the TSN stream according to the time information indicated by the second scheduling parameter, and then transmits the message of the TSN service according to at least one of the transmission time window, the reception time window, and the service period of the TSN stream.

In an embodiment of the present application (corresponding to the embodiments of fig. 4, 6, and 7), the first scheduling parameter is configured to the UE/UPF, the UE/UPF determines the second scheduling parameter according to the first scheduling parameter and the clock offset, and then the UE/UPF transmits the message of the TSN service according to the second scheduling parameter, so that the UE/UPF understands the configured scheduling parameter according to the correct time reference, and thus, the message of the TSN service is correctly transmitted.

In another embodiment of the present application (corresponding to the embodiments in fig. 5, 8 to 11), a second device (e.g., an SMF or an AF) determines a second scheduling parameter according to the first scheduling parameter and the clock offset, and then configures the second scheduling parameter to a UE/UPF, and the UE/UPF transmits a message of the TSN service according to the second scheduling parameter, so that the UE/UPF understands the configured scheduling parameter according to a correct time reference, and thus correctly transmits the message of the TSN service.

2. Third scheduling parameter and fourth scheduling parameter

The third scheduling parameter is used for indicating the time information of transmitting the message of the TSN service, the fourth scheduling parameter is also used for indicating the time information of transmitting the message of the TSN service, but the fourth scheduling parameter is set based on the clock of the TSN clock domain, and the third scheduling parameter is set based on the clock of the 5G system. The RAN may transmit a message of the TSN service according to the third scheduling parameter.

Wherein the time information indicated by the third scheduling parameter and/or the fourth scheduling parameter comprises at least one of the following information: a sending time window, a receiving time window, a service period.

In an embodiment of the present application (corresponding to the embodiments in fig. 5, 8 to 10), a second device (e.g., an SMF or an AF) determines a second scheduling parameter according to a first scheduling parameter and a clock offset, then determines a third scheduling parameter according to the second scheduling parameter, and then configures the third scheduling parameter to a RAN, and the RAN transmits a message of a TSN service according to the third scheduling parameter, so that the RAN understands the configured scheduling parameter according to a correct time reference, and thus the message of the TSN service is correctly transmitted.

In another embodiment of the present application (corresponding to the embodiment of fig. 11), an AF determines a fourth scheduling parameter according to a first scheduling parameter, then sends the fourth scheduling parameter to an SMF, the SMF determines a third scheduling parameter according to the fourth scheduling parameter and a clock bias, then configures the third scheduling parameter to a RAN, and the RAN transmits a message of a TSN service according to the third scheduling parameter, so that the RAN understands the configured scheduling parameter according to a correct time reference, and thus the message of the TSN service is correctly transmitted.

In summary, in the present application:

1) fig. 4, 6 and 7 show embodiments: and the UE/UPF determines a second scheduling parameter according to the first scheduling parameter and the clock deviation, and then transmits the message of the TSN service according to the second scheduling parameter.

2) Fig. 5, 8 to 10: the SMF/AF determines a second scheduling parameter according to the first scheduling parameter and the clock deviation, determines a third scheduling parameter according to the second scheduling parameter, and then the SMF/AF sends the second scheduling parameter to the UE/UPF and sends the third scheduling parameter to the RAN, so that the UE/UPF transmits the message of the TSN service according to the second scheduling parameter, and the RAN transmits the message of the TSN service according to the third scheduling parameter.

3) In the embodiment shown in fig. 11: and the AF determines a fourth scheduling parameter according to the first scheduling parameter, then sends the first scheduling parameter and the fourth scheduling parameter to the SMF, the SMF determines a second scheduling parameter according to the first scheduling parameter and the clock deviation, determines a third scheduling parameter according to the fourth scheduling parameter and the clock deviation, sends the third scheduling parameter to the RAN and sends the second scheduling parameter to the UE/UPF, so that the RAN transmits a message of the TSN service according to the third scheduling parameter, and the UE/UPF transmits the message of the TSN service according to the second scheduling parameter.

In this application, the second scheduling parameter is obtained according to the first scheduling parameter and the clock bias, that is: and adjusting the first scheduling parameter according to the clock deviation to obtain a second scheduling parameter. Specifically, the method comprises the following steps: determining the time for starting execution of the gating operation cycle of the port in the time information indicated by the second scheduling parameter according to the time for starting execution of the gating operation cycle of the port in the time information indicated by the first scheduling parameter and the time deviation in the clock deviation; and determining the duration of the gating state of the port in the time information indicated by the second scheduling parameter according to the duration of the gating state of the port in the time information indicated by the first scheduling parameter and the frequency deviation in the clock deviation. Optionally, the gating state in the second scheduling parameter may also be determined according to the gating state in the first scheduling parameter, and specifically, the gating state in the second scheduling parameter may be the same as the gating state in the first scheduling parameter.

In this application, determining the third scheduling parameter according to the second scheduling parameter specifically includes: if the TSN service is a downlink TSN service, determining a third scheduling parameter according to a second scheduling parameter, residence time information of a TSN service message on a UE side and transmission delay information of the TSN service message between the UE and the RAN, for example, firstly determining time information of the TSN service message reaching an output port of the UE or a TSN converter of the UE according to the second scheduling parameter, and then determining time information of the TSN service message reaching an input port of a RAN node according to the residence time information of the TSN service message on the UE side and the transmission delay information of the TSN service message between the UE and the RAN, namely the third scheduling parameter; or, if the TSN service is an uplink TSN service, determining a third scheduling parameter according to the second scheduling parameter, the residence time information of the TSN service packet at the UPF side, and the transmission delay information of the TSN service packet between the UE and the UPF, for example, first determining the time information when the TSN service packet reaches the output port of the UPF or the UPF TSN converter according to the second scheduling parameter, and then determining the time information when the TSN service packet reaches the output port of the UPF or the UPF TSN converter according to the residence time information of the TSN service packet at the UPF side, and the transmission delay information of the TSN service packet between the UE and the UPF, that is, the third scheduling parameter.

In this application, determining the fourth scheduling parameter according to the first scheduling parameter specifically includes: if the TSN service is a downlink TSN service, determining a fourth scheduling parameter according to the first scheduling parameter, the residence time information of the TSN service message on the UE side and the transmission delay information of the TSN service message between the UE and the RAN, for example, firstly determining the time information of the TSN service message reaching the UE or the output port of the TSN converter of the UE according to the first scheduling parameter, and then determining the time information of the TSN service message reaching the input port of the RAN node according to the residence time information of the TSN service message on the UE side and the transmission delay information of the TSN service message between the UE and the RAN, namely the fourth scheduling parameter; or, if the TSN service is an uplink TSN service, determining a fourth scheduling parameter according to the first scheduling parameter, the residence time information of the TSN service packet at the UPF side, and the transmission delay information of the TSN service packet between the UE and the UPF, for example, first determining the time information when the TSN service packet reaches the output port of the UPF or the UPF TSN converter according to the first scheduling parameter, and then determining the residence time information of the TSN service packet at the UPF side and the transmission delay information of the TSN service packet between the UE and the UPF according to the time information when the TSN service packet reaches the output port of the UPF or the UPF TSN converter, the residence time information of the TSN service packet at the UPF side, and the transmission delay information of the TSN service packet between the UE and the UPF, that is the fourth scheduling parameter.

It should be noted that the UE side residence time information includes processing residence time of the TSN packet in the UE and the TSN converter of the UE side, that is, residence time of the packet between a port of the UE side and a port of the TSN converter of the UE side, and if the TSN converter of the UE side is integrated in the UE, the UE side residence time refers to residence time of the packet between entering from one port of the UE to being sent out from another port of the UE; the UPF side residence time information includes the processing residence time of the TSN packet in the UPF and the TSN converter of the UPF side, and if the TSN converter of the UPF side is integrated in the UPF, the residence time of the UPF side refers to the residence time of the packet between the entry from one port of the UPF side and the transmission from the other port of the UPF side.

Third, first device and second device

In the embodiments of fig. 4, 6 and 7, the first device is UE or UPF, and the second device is SMF or PCF.

In the embodiments of fig. 5, 8 to 10, the first device is UE or UPF, and the second device is SMF or AF.

In order to solve the problems of the background art, the present application provides a method for processing a TSN service, as shown in fig. 4, the method includes the following steps:

step 401, a first device obtains a first scheduling parameter of a TSN service and TSN clock domain information corresponding to the TSN service.

As an implementation method, the first device may obtain, in a session modification procedure, a first scheduling parameter and TSN clock domain information of a TSN service from the SMF. For example, the second device (e.g., PCF) may obtain TSN clock domain information corresponding to the TSN service from the UDR, PCF, or AF, and obtain the first scheduling parameter of the TSN service from the AF, and then in the session modification procedure, send the first scheduling parameter of the TSN service and the TSN clock domain information corresponding to the TSN service to the SMF, and the SMF sends the first scheduling parameter and the TSN clock domain information to the first device. For another example, in the session modification procedure, the second device (e.g., SMF) may obtain TSN clock domain information corresponding to the TSN service from the database or SMF, and obtain the first scheduling parameter of the TSN service from the PCF, and then the SMF sends the first scheduling parameter of the TSN service and the TSN clock domain information corresponding to the TSN service to the first device.

As another implementation method, the first device may acquire the TSN clock domain information from the SMF in the session establishment procedure. For example, when the second device is an SMF, the SMF may obtain TSN clock domain information corresponding to the TSN service from the database or the SMF, and then send the TSN clock domain information corresponding to the TSN service to the first device. The first device may obtain a first scheduling parameter of the TSN traffic from the SMF in a session modification procedure. For example, in the session modification procedure, the second device (e.g., SMF) may obtain the first scheduling parameter of the TSN service from the PCF, and then send the first scheduling parameter of the TSN service to the first device.

Step 402, the first device adjusts the first scheduling parameter according to the clock corresponding to the TSN clock domain information and the clock of the 5G system, so as to obtain a second scheduling parameter.

For a specific implementation of this step 402, reference may be made to the foregoing description, which is not described herein again.

Step 403, the first device transmits a message of the TSN service according to the second scheduling parameter.

Based on the above embodiment, the first device may obtain the first scheduling parameter of the TSN service, the clock domain information corresponding to the TSN service, and the clock of the 5G system, and adjust the first scheduling parameter according to the clock corresponding to the TSN clock domain information and the clock of the 5G system to obtain the second scheduling parameter, where the second scheduling parameter is set based on the clock of the 5G system; and then transmitting the message of the TSN service according to the second scheduling parameter, wherein the first scheduling parameter corresponding to the TSN clock is converted into the second scheduling parameter corresponding to the clock of the 5G system, and the message of the TSN service is transmitted according to the second scheduling parameter, so that the message of the TSN service is correctly transmitted, and the improvement of the communication quality is facilitated.

As another implementation method, after the step 401, the

steps

402 and 403 may not be executed, but the message of the TSN service is transmitted by the following method: the first device is configured with a clock of a 5G system and a clock of at least one TSN clock domain, and after receiving a first scheduling parameter and TSN clock domain information corresponding to a TSN service, the first device understands the first scheduling parameter based on the clock of the TSN clock domain corresponding to the received TSN service, so that the first device can directly transmit a packet of the TSN service according to the first scheduling parameter based on the TSN clock domain information corresponding to the TSN service.

In order to solve the problem of the background art, the present application provides another processing method of a TSN service, as shown in fig. 5, the method includes the following steps:

step 501, the second device obtains a second scheduling parameter of the TSN service.

The specific way for the second device to obtain the second scheduling parameter of the TSN service is as follows: the second equipment determines the clock deviation of the clock of the TSN clock domain corresponding to the TSN service and the clock of the 5G system, acquires the first scheduling parameter of the TSN service, and then determines the second scheduling parameter according to the first scheduling parameter and the clock deviation. If the second device is an AF, the method for the AF to acquire the first scheduling parameter may be, for example: the first scheduling parameter is obtained from the CNC. If the second device is an SMF, the method for the SMF to obtain the first scheduling parameter may be, for example: the first scheduling parameter may be obtained from the PCF, which may obtain the first scheduling parameter from the AF, or from the CNC.

It should be noted that, the manner of acquiring the clock offset by the second device is not limited in the present application, and may be, for example: the second device is simultaneously synchronized with the clock of the 5G system and the clock of the TSN clock domain, and the second device determines the clock deviation of the clock of the 5G system and the clock of the TSN clock domain; when the second device obtains the clock deviation of the 5G clock domain and the TSN clock domain from the UE or the UPF; it can also be: when the second device is an AF, the SMF obtains the clock offset of the 5G clock domain and the TSN clock domain from the UE or UPF, and then the AF obtains the clock offset from the SMF. The method for the SMF to acquire the clock offset between the 5G clock domain and the TSN clock domain from the UE or the UPF is not limited in the present invention, and the UE or the UPF may report the clock offset between the 5G clock and each TSN clock domain to the SMF according to a preconfigured way, or the SMF may send a clock offset acquisition request to the UE or the UPF, and the UE or the UPF reports the clock offset between the 5G clock and each TSN clock domain according to TSN clock domain information (such as a clock domain ID) carried in the request.

As an alternative implementation manner, when the second device is an SMF, the SMF may also directly obtain the second scheduling parameter from the AF, and the AF may determine the second scheduling parameter according to the first scheduling parameter and the clock offset, and the specific implementation process may refer to the foregoing description.

Step 502, the second device determines a third scheduling parameter according to the second scheduling parameter.

The specific implementation method of this step may refer to the foregoing description, and is not described herein again.

In step 503, the second device sends a third scheduling parameter to the RAN. Accordingly, the RAN may receive the third scheduling parameter.

In step 504, the RAN transmits the message of the TSN service according to the third scheduling parameter.

Optionally, the following steps 505 to 506 may also be included.

Step 505, the second device sends the second scheduling parameter to the first device. Accordingly, the first device may receive the second scheduling parameter.

Step 506, the first device transmits the message of the TSN service according to the second scheduling parameter.

It should be noted that, if the foregoing steps 505 to 506 are not executed, the first device may obtain the first scheduling parameter through the method in the embodiment in fig. 4, and then the first device determines the second scheduling parameter according to the first scheduling parameter, and transmits the message of the TSN service according to the second scheduling parameter.

It should be noted that, the manner in which the second device sends the third scheduling parameter to the RAN and sends the second scheduling parameter to the second device is not limited in the present invention, for example, when the second device is an AF, the AF may send the third scheduling parameter to the RAN through an SMF, and send the second scheduling parameter to the first device; the AF may also send a third scheduling parameter and a second scheduling parameter to the PCF, and the PCF sends the third scheduling parameter and the second scheduling parameter to the SMF, and then the SMF sends the third scheduling parameter to the RAN and sends the second scheduling parameter to the first device; the AF may also send the second scheduling parameter directly to the first device.

Based on the above embodiment, the second device may obtain a second scheduling parameter of the TSN service, where the second scheduling parameter is set based on a clock of the 5G system, and the second device determines a third scheduling parameter according to the second scheduling parameter and sends the third scheduling parameter to the RAN, so that the RAN may transmit a message of the TSN service according to the third scheduling parameter, and further, the second device may send the second scheduling parameter to the first device, so that the first device may transmit the message of the TSN service according to the second scheduling parameter, thereby implementing correct transmission of the message of the TSN service by the access network, and facilitating improvement of communication quality.

Two specific embodiments (the embodiment of fig. 6 and the embodiment of fig. 7) are given below, and the embodiment shown in fig. 4 will be described.

Fig. 6 is a schematic flow chart of another processing method of a TSN service provided by the present application. The method comprises the following steps:

step 601, the CNC determines a transmission path and a scheduling transmission requirement for the TSN switching node based on the QoS requirement of the TSN service of the TSN terminal, sends the QoS requirement of the TSN service to the 5G system switching node through the AF, and also sends the first scheduling parameter of the TSN service to the AF of the 5G system switching node.

As an implementation method, the CNC sends a scheduling rule to the AF, where the scheduling rule includes a first scheduling parameter. The TSN service scheduling rule is used to indicate time information of TSN switching node transmitting TSN service packets, such as what sending time window the packets are sent, and what receiving time window the packets are received.

As a specific implementation method, the CNC may send a switch node configuration Request (Bridge configuration Request) message to the AF, where the Request message carries a TSN QoS requirement (QoS requirement) and a first scheduling parameter of a TSN service.

In step 602, the AF sends the QoS requirement of the TSN service and the first scheduling parameter of the TSN service to the PCF.

As a specific implementation method, the AF may send a TSN Stream Request (TSN Stream Request) message to the PCF, where the Request message carries a first scheduling parameter of the TSN service and a QoS requirement of the TSN service, and further may also carry an application identifier (APP ID) or traffic template (traffic filtering) information. The service template information comprises quintuple information and is used for filtering messages.

Both the identity of the application and the service template may be used to identify the application.

The TSN traffic refers to traffic of an application indicated by an identity or traffic template of the application.

Step 603, the PCF obtains the TSN clock domain information corresponding to the application identifier from the UDR.

And the UDR stores the corresponding relation between the application identifier and the TSN clock domain information. Thus, the PCF may request the UDR for TSN clock domain information corresponding to the identity of the application based on the identity of the application.

As an alternative implementation manner of this step 603, the PCF may store, on the PCF, a corresponding relationship between the identifier of the application and the TSN clock domain information, or a corresponding relationship between the traffic template and the TSN clock domain information, and then the PCF may obtain, from the PCF, the TSN clock domain information corresponding to the identifier of the application (or the traffic template).

As yet another alternative implementation of this step 603, the PCF may also obtain TSN clock domain information corresponding to the identification (or traffic template) of the application from the AF. For example, in step 602, the AF sends, to the PCF, TSN clock domain information corresponding to the identifier (or traffic template) of the application, in addition to the first scheduling parameter of the TSN traffic.

The TSN clock domain information corresponding to the application identifier is TSN clock domain information corresponding to the TSN service of the application.

In step 604, the PCF determines Policy and Charging Control (PCC) rules according to the QoS requirements of the TSN traffic.

This step is prior art and can be referred to the related description of the prior art.

In step 605, the PCF sends a policy update notification request message to the SMF, and accordingly, the SMF may receive the policy update notification request message.

The policy update notification request message carries a first scheduling parameter of the TSN service and TSN clock domain information corresponding to the TSN service. In this step, the policy update notification request message notifies the SMF to update the policy information of the PDU session, so as to trigger the PDU session modification procedure. The strategy information comprises a first scheduling parameter of the TSN service and TSN clock domain information.

As one implementation, the policy update notification request may be an Npcf _ SMPolicyControl _ updateNotify request.

At step 606, the SMF sends a policy update notification response message to the PCF. Accordingly, the PCF may receive the policy update notification response message.

This step is an optional step. As a specific implementation manner, the policy update notification response message may be Npcf _ SMPolicyControl _ updateNotify response, for example.

In step 607, the SMF initiates a session modification procedure, and establishes a new QoS Flow (QoS Flow) or updates an existing QoS Flow according to the policy information sent by the PCF.

Step 608, the SMF sends the first scheduling parameter of the TSN service and the TSN clock domain information corresponding to the TSN service to the UE/UPF.

As a specific implementation manner, the SMF may send a QoS rule (QoS rule) to the UE, where the QoS rule carries a first scheduling parameter of the TSN service and TSN clock domain information corresponding to the TSN service.

As a specific implementation manner, the SMF may send N6 service routing information (N6Traffic routing Info) to the UPF, where the N6Traffic routing Info carries the first scheduling parameter of the TSN service and TSN clock domain information corresponding to the TSN service.

It should be noted that, in this step, the SMF may send the first scheduling parameter of the TSN service and the TSN clock domain information corresponding to the TSN service to the UE or the UPF, or may send the first scheduling parameter of the TSN service and the TSN clock domain information corresponding to the TSN service to both the UE and the UPF, which is not limited in this application.

And step 609, the UE/UPF transmits the message of the TSN service according to the first scheduling parameter of the TSN service and the clock domain information of the TSN service.

The specific implementation method of this step may refer to the related description of step 402 in the embodiment shown in fig. 4, and is not described here again.

Based on the embodiment, the UE/UPF processes the message of the TSN service according to the first scheduling parameter and the clock of the TSN clock domain, so that the message of the TSN service is correctly transmitted, and the communication quality is improved.

Fig. 7 is a schematic flow chart of another processing method of a TSN service provided by the present application. The method comprises the following steps:

in the session establishment procedure (including the following steps 701-703):

701, the SMF receives a session establishment request message sent by the UE.

The session establishment request message is for requesting establishment of a session.

In a specific implementation, the Session Establishment Request message may be a PDU Session Establishment Request (PDU Session Establishment Request) message, and the Request message may carry single Network slice selection assistance information (S-NSSAI) and a Data Network Name (DNN).

In step 702, the SMF obtains TSN clock domain information from the UDR.

The UDR stores therein a correspondence between session information (e.g., S-NSSAI and/or DNN) and TSN clock domain information. Accordingly, the SMF can request the UDR to acquire TSN clock domain information corresponding to the session information based on the session information.

As an alternative implementation manner of this step 702, the SMF may store a corresponding relationship between the session information and the TSN clock domain information on the SMF, and then the SMF may obtain the TSN clock domain information corresponding to the session information from the SMF.

It should be noted that, one piece of session information may correspond to one TSN service, and therefore, the TSN clock domain information corresponding to the session information here may also be understood as TSN clock domain information corresponding to the TSN service.

In step 703, the SMF sends TSN clock domain information corresponding to the session information to the UE and/or the UPF.

If the SMF sends the TSN clock domain information corresponding to the session information to both the UE and the UPF, the sequence of sending the TSN clock domain information to the UE and the UPF by the SMF is not limited in the present application.

As a specific implementation manner, the SMF may carry the TSN clock domain information in N1SM container, and send the TSN clock domain information to the UE through the AMF.

As a specific implementation manner, the SMF may send the TSN clock domain information to the UPF when establishing or modifying the N4 session corresponding to the session.

In this step, the SMF may transmit TSN clock domain information to the UE or the UPF, or may transmit TSN clock domain information to both the UE and the UPF, which is not limited in this application.

In the QoS flow establishment or modification procedure (including step 704 to step 713):

step 704-step 705, similar to step 601-step 602 in the embodiment of fig. 6, can refer to the foregoing description.

Step 706, like step 604 of the embodiment of fig. 6, can refer to the foregoing description.

In step 707, the PCF sends a policy update notification request message to the SMF, and accordingly, the SMF may receive the policy update notification request message.

The policy update notification request message carries a first scheduling parameter of the TSN service. In this step, the policy update notification request message notifies the SMF to update the policy information of the PDU session, so as to trigger the PDU session modification procedure. The strategy information comprises a first scheduling parameter of the TSN service.

As one implementation, the policy update notification request message may be an Npcf _ SMPolicyControl _ updateNotify request.

At step 708, the SMF sends a policy update notification response message to the PCF. Accordingly, the PCF may receive the policy update notification response message.

Step 709, like step 607 in the embodiment of fig. 6, can refer to the above description.

In step 710, the SMF sends a first scheduling parameter of the TSN traffic to the UE and/or the UPF.

The sequence of the first scheduling parameters for the SMF to send the TSN service to the UE and the UPF is not limited in the present application.

As a specific implementation manner, the SMF may send a QoS rule (QoS rule) to the UE, where the QoS rule carries a first scheduling parameter of the TSN traffic.

As a specific implementation manner, the SMF may send N6Traffic routing information (N6Traffic routing Info) to the UPF, where the N6Traffic routing Info carries the first scheduling parameter of the TSN Traffic.

In this step, the SMF may send the first scheduling parameter of the TSN service to the UE or the UPF, or may send the first scheduling parameter of the TSN service to both the UE and the UPF, which is not limited in this application.

Step 711, like step 609 in the embodiment of fig. 6, can refer to the above description.

It should be noted that the invention does not limit the timing relationship between steps 701 to 703 and steps 704 to 711, specifically, steps 701 to 703 are completed in the session establishment process, and step 711 is completed in the QoS Flow establishment or QoS Flow modification. If the establishment of the QoS Flow for the TSN traffic is performed simultaneously in the session establishment procedure, the step execution order may be step 701-step 702, step 704-step 709, where the SMF simultaneously transmits the first scheduling parameter and the TSN clock domain information to the UE and/or the UPF in step 710; if the QoS Flow for the TSN service is not established in the session establishment procedure, the steps may be executed in the order of step 701 to step 703, and then step 703 to step 711.

Based on the embodiment, the SMF acquires the TSN clock domain information corresponding to the session information from the SMF or the UDR in the session establishment procedure, and sends the TSN clock domain information to the UE/UPF. In the process of establishing the QoS flow, after the UE and the UPF acquire the QoS parameter comprising the first scheduling parameter of the TSN service from the SMF, the message of the TSN service is processed according to the clock of the TSN clock domain of the session where the QoS flow is located and the first scheduling parameter, so that the message of the TSN service is correctly transmitted, and the communication quality is favorably improved.

Three specific embodiments (the embodiments of fig. 8-10) are provided below, describing the embodiment shown in fig. 5.

Fig. 8 is a schematic flow chart of a processing method of a TSN service provided by the present application. The method comprises the following steps:

step 801, the CNC determines a transmission path and a scheduling transmission requirement for the TSN switching node based on the QoS requirement of the TSN service of the TSN terminal, sends the QoS requirement of the TSN service to the 5G system switching node through the AF, and further sends the first scheduling parameter of the TSN service to the AF of the 5G system switching node.

As a specific implementation method, the CNC may send a switch node configuration Request (Bridge configuration Request) message to the AF, where the Request carries a TSN QoS requirement (QoS requirement) and a first scheduling parameter of a TSN service.

At step 802, the AF determines a clock offset of the clock of the 5G system and the clock of the TSN clock domain.

The specific manner of determining the clock offset between the clock of the 5G system and the clock of the TSN clock domain by the AF is not limited in the present application, and the related description of step 501 is specifically referred to.

In step 803, the AF determines a second scheduling parameter based on the clock offset and the first scheduling parameter.

Step 804, the AF sends the QoS requirement of the TSN service and the second scheduling parameter of the TSN service to the PCF.

As a specific implementation method, the AF may send a TSN Stream Request (TSN Stream Request) message to the PCF, where the Request message carries the second scheduling parameter of the TSN service and the QoS requirement of the TSN service, and further may also carry an application identifier (APP ID) or traffic template (traffic filtering) information. The service template information comprises quintuple information and is used for filtering messages. Both the identity of the application and the service template may be used to identify the application.

Step 805, the PCF determines the PCC rules according to the QoS requirements of the TSN traffic.

At step 806, the PCF sends a policy update notification request message to the SMF, which may be received by the SMF accordingly.

The policy update notification request message carries a second scheduling parameter of the TSN service. In this step, the policy update notification request message notifies the SMF to update the policy information of the PDU session, so as to trigger the PDU session modification procedure. And the strategy information comprises a second scheduling parameter of the TSN service.

In step 807, the SMF sends a policy update notification response message to the PCF. Accordingly, the PCF may receive the policy update notification response message.

Step 808, the SMF initiates a session modification procedure, and establishes a new QoS Flow (QoS Flow) or updates an existing QoS Flow according to the policy information sent by the PCF.

Step 809, the SMF determines a third scheduling parameter of the TSN service according to the second scheduling parameter of the TSN service.

The specific implementation process of this step may refer to the foregoing description, and is not described here again.

As a specific implementation, the SMF may send a QoS Profile (QoS Profile) to the RAN, where the QoS Profile carries the third scheduling parameter of the TSN service.

In step 811, the SMF transmits the second scheduling parameter for the TSN traffic to the UE.

Thus, the UE or the TSN converter on the UE side may transmit the packet of the TSN service at the corresponding port according to the second scheduling parameter, which may specifically refer to the description of step 505 in the embodiment of fig. 5 and is not described herein again.

As a specific implementation manner, the SMF may send a QoS rule (QoS rule) to the UE, and the second scheduling parameter of the TSN traffic is carried in the QoS rule.

In step 812, the SMF sends the second scheduling parameter of the TSN traffic to the UPF.

Thus, the UPF or the TSN converter on the UPF side may transmit the packet of the TSN service at the corresponding port according to the second scheduling parameter, which may specifically refer to the description of step 505 in the embodiment of fig. 5 and is not described herein again.

It should be noted that, the present application does not limit the sequence among the above steps 810, 811, and 812.

As a specific implementation manner, the SMF may send N6Traffic routing information (N6Traffic routing Info) to the UPF, where the N6Traffic routing Info carries the second scheduling parameter of the TSN Traffic.

It should be noted that, all of the steps 810, 811, and 812 may be performed, or only one or two of the steps may be performed, which is not limited in the present application.

Based on the embodiment, the RAN may obtain a third scheduling parameter based on the clock of the 5G system, and may schedule the uplink or downlink air interface resource according to the third scheduling parameter, thereby ensuring the deterministic transmission of the TSN service packet. And the UE/UPF acquires a second scheduling parameter based on the clock of the 5G system, and the second scheduling parameter processes the service message of the TSN stream, so that the correct transmission of the message of the TSN service is realized, and the communication quality is improved.

Fig. 9 is a schematic flow chart of another processing method of a TSN service provided by the present application. The method comprises the following steps:

step 901 to step 903, similar to step 801 to step 803 in the embodiment shown in fig. 8, may refer to the foregoing description, and will not be described here again.

In step 904, the AF determines a third scheduling parameter of the TSN service according to the second scheduling parameter of the TSN service.

The method for determining the third scheduling parameter is the same as step 809 in the embodiment shown in fig. 8, and reference may be made to the foregoing description, which is not repeated here.

Step 905, the AF sends the QoS requirement of the TSN service, the second scheduling parameter of the TSN service, and the third scheduling parameter to the PCF.

As a specific implementation method, the AF may send a TSN Stream Request (TSN Stream Request) message to the PCF, where the Request message carries the second scheduling parameter and the third scheduling parameter of the TSN service and the QoS requirement of the TSN service, and further may also carry an application identifier (APP ID) or traffic template (traffic filtering) information. The service template information comprises quintuple information and is used for filtering messages.

Step 906, like step 805 in the embodiment shown in fig. 8, may refer to the foregoing description, and is not described herein again.

In step 907, the PCF sends a policy update notification request message to the SMF, and accordingly, the SMF may receive the policy update notification request message.

The policy update notification request message carries the second scheduling parameter and the third scheduling parameter of the TSN service. In this step, the policy update notification request message notifies the SMF to update the policy information of the PDU session, so as to trigger the PDU session modification procedure. The strategy information comprises a second scheduling parameter and a third scheduling parameter of the TSN service.

At step 908, the SMF sends a policy update notification response message to the PCF. Accordingly, the PCF may receive the policy update notification response message.

In step 909, similar to step 808 in the embodiment shown in fig. 8, reference may be made to the foregoing description, and details are not repeated here.

Step 910-step 912, similar to step 810-step 812 in the embodiment shown in fig. 8, may refer to the foregoing description, and will not be described herein again.

Fig. 10 is a schematic flow chart of a processing method of another TSN service provided by the present application. The method comprises the following steps:

step 1001, like step 801 in the embodiment shown in fig. 8, may refer to the foregoing description, and is not repeated here.

In step 1002, the AF sends the QoS requirement of the TSN service and the first scheduling parameter of the TSN service to the PCF.

Step 1003, like step 805 in the embodiment shown in fig. 8, may refer to the foregoing description, and is not described herein again.

In step 1004, the PCF sends a policy update notification request message to the SMF, and accordingly, the SMF may receive the policy update notification request message.

In step 1005, the SMF sends a policy update notification response message to the PCF. Accordingly, the PCF may receive the policy update notification response message.

Step 1006, like step 808 in the embodiment shown in fig. 8, may refer to the foregoing description, and is not repeated here.

In step 1007, the SMF determines the clock offset between the clock of the 5G system and the clock of the TSN clock domain.

The clock offset may include a time difference and/or a frequency offset between a clock of the TSN clock domain and a clock of the 5G system.

In step 1008, the SMF determines a second scheduling parameter based on the clock offset between the clock of the 5G system and the clock of the TSN clock domain and the first scheduling parameter. The specific method is the same as step 803 in the embodiment shown in fig. 8, and is not described here again.

Step 1009 to step 1012, which is similar to step 809 to step 812 of the embodiment shown in fig. 8, may refer to the foregoing description, and will not be described herein again.

Another embodiment (i.e., fig. 11) is given below for enabling correct transmission of messages for TSN traffic by a UE, UPF, or RAN.

Fig. 11 is a schematic flow chart of another processing method of a TSN service provided by the present application. The method comprises the following steps:

step 1101, similar to step 801 of the embodiment shown in fig. 8, may refer to the foregoing description, and is not repeated here.

In step 1102, the AF determines a fourth scheduling parameter according to the first scheduling parameter.

Since the first scheduling parameter is a scheduling parameter based on the TSN clock domain, the fourth scheduling parameter is also based on the TSN clock domain.

Step 1103, the AF sends the QoS requirement of the TSN service, the first scheduling parameter and the fourth scheduling parameter of the TSN service to the PCF.

As a specific implementation method, the AF may send a TSN Stream Request (TSN Stream Request) message to the PCF, where the Request message carries a first scheduling parameter and a fourth scheduling parameter of the TSN service and a QoS requirement of the TSN service, and further may also carry an application identifier (APP ID) or traffic template (traffic filtering) information. The service template information comprises quintuple information and is used for filtering messages.

Step 1104, similar to step 805 in the embodiment shown in fig. 8, may refer to the foregoing description, and is not repeated here.

In step 1105, the PCF sends a policy update notification request message to the SMF, which may be received by the SMF accordingly.

The policy update notification request message carries the first scheduling parameter and the fourth scheduling parameter of the TSN service. In this step, the policy update notification request message notifies the SMF to update the policy information of the PDU session, so as to trigger the PDU session modification procedure. The strategy information comprises a first scheduling parameter and a fourth scheduling parameter of the TSN service.

At step 1106, the SMF sends a policy update notification response message to the PCF. Accordingly, the PCF may receive the policy update notification response message.

Step 1107, like step 808 in the embodiment shown in fig. 8, may refer to the foregoing description, and is not described here again.

At step 1108, the SMF determines the clock deviation of the clock of the TSN clock domain from the clock of the 5G system.

For example, the SMF may obtain the clock offset of the clock of the 5G system and the clock of the TSN clock domain from the UE or the UPF. Alternatively, the SMF may acquire the 5G clock domain information and the TSN clock domain information from the UE or the UPF, and then determine the clock offset according to the clock of the 5G clock domain (i.e., the clock of the 5G system) and the clock of the TSN clock domain. The manner in which the SMF determines the clock offset is not limited in this application.

In step 1109, the SMF determines a second scheduling parameter according to the clock offset and the first scheduling parameter.

In step 1110, the SMF determines a third scheduling parameter according to the clock offset and the fourth scheduling parameter.

Step 1111 to step 1113, similar to step 810 to step 812 of the embodiment shown in fig. 8, can refer to the foregoing description, and are not described herein again.

It should be noted that the steps 1110, 1112, and 1113 are optional steps. In one implementation, steps 1110, 1112, and 1113 described above may not be performed. In yet another implementation, steps 1110 and 1112 may be performed (i.e., the second scheduling parameter is a scheduling parameter for a UPF). In yet another implementation, steps 1110 and 1113 may be performed (i.e., the second scheduling parameter is a scheduling parameter for the UE).

The above-mentioned scheme provided by the present application is mainly introduced from the perspective of interaction between network elements. It is to be understood that the above-described implementation of each network element includes, in order to implement the above-described functions, a corresponding hardware structure and/or software module for performing each function. Those of skill in the art will readily appreciate that the present invention can be implemented in hardware or a combination of hardware and computer software, with the exemplary elements and algorithm steps described in connection with the embodiments disclosed herein. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

Based on the same inventive concept, as shown in fig. 12, a schematic diagram of a processing apparatus for a TSN service provided in the present application is shown, where the apparatus may be a second device (e.g., an application function network element, a session management network element, or a policy control network element), a first device (e.g., a terminal device, or a user plane network element), or a chip, and may execute the method executed by the application function network element or the second device in any of the above embodiments.

The processing device 1200 for TSN traffic comprises at least one processor 1201, communication lines 1202, and at least one communication interface 1204. In a specific implementation, as an embodiment, the processing apparatus 1200 of the TSN service may further include a memory 1203. Of course, the memory 1203 may be separate and connected to the processor 1201 through a communication line. The memory 1203 may also be integrated with the processor 1203. If the processor 1201 needs program code, the memory 1203 may store the program code and transfer the program code to the processor 1201, so that the processor 1201 implements the embodiments of the present invention according to the instructions of the program code. The processor 1201 may be a general purpose Central Processing Unit (CPU), a microprocessor, an Application Specific Integrated Circuit (ASIC), or one or more ics for controlling the execution of programs in accordance with the teachings of the present disclosure.

The communication link 1202 may include a path for communicating information between the aforementioned components.

Communication interface 1204 may employ any transceiver or the like for communicating with other devices or communication networks, such as an ethernet, a Radio Access Network (RAN), a Wireless Local Area Network (WLAN), a wired access network, etc.

The memory 1203 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that can store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compact disc, laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to such.

The memory 1203 is used for storing computer execution instructions for executing the scheme of the present application, and the processor 1201 controls the execution of the computer execution instructions. The processor 1201 is configured to execute the computer execution instruction stored in the memory 1203, so as to implement the processing method of the TSN service provided in the foregoing embodiment of the present application.

Optionally, the computer-executable instructions in the embodiments of the present application may also be referred to as application program codes, which are not specifically limited in the embodiments of the present application.

In particular implementations, processor 1201 may include one or more CPUs such as CPU0 and CPU1 in fig. 12, for example, as an example.

In a specific implementation, as an embodiment, the processing apparatus 1200 for TSN traffic may include a plurality of processors, for example, the processor 1201 and the processor 1208 in fig. 12. Each of these processors may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (e.g., computer program instructions).

When the processing apparatus 1200 of the TSN service shown in fig. 12 is a chip, for example, a chip of a first device or a chip of a second device, the chip includes a processor 1201 (which may further include a processor 1208), a communication line 1202, a memory 1203, and a communication interface 1204. In particular, the communication interface 1204 may be an input interface, a pin or a circuit, or the like. The memory 1203 may be a register, cache, or the like. The

processors

1201 and 1208 may be a general-purpose CPU, a microprocessor, an ASIC, or one or more integrated circuits for controlling program execution of the processing method of the TSN traffic of any of the above embodiments.

The present application may perform division of functional modules on the apparatus according to the above method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, the division of the modules in the present application is schematic, and is only a logical function division, and there may be another division manner in actual implementation. For example, in the case of dividing each function module by corresponding functions, fig. 13 shows a schematic diagram of a processing apparatus of a TSN service, where the processing apparatus 1300 of the TSN service may be a second device (such as an application function network element, a policy control network element, or a session management network element) involved in the foregoing embodiments, and the processing apparatus 1300 of the TSN service includes a communication unit 1301 and a processing unit 1302.

The processing apparatus 1300 of the TSN service may implement the following operations:

in a first embodiment, the communication unit 1301 is configured to acquire a first scheduling parameter of a TSN service and TSN clock domain information corresponding to the TSN service, where the first scheduling parameter is used to indicate time information for transmitting a packet of the TSN service, and the first scheduling parameter is set based on a clock corresponding to the TSN clock domain information; the communication unit 1301 is further configured to send the first scheduling parameter of the TSN service and the TSN clock domain information to a first device.

In a possible implementation method, the apparatus is a policy control network element; the communication unit 1301 is specifically configured to: acquiring a first scheduling parameter of the TSN service from an application function network element; acquiring TSN clock domain information corresponding to the TSN service from a database, the second device or an application function network element; and sending the first scheduling parameter of the TSN service and the TSN clock domain information to the first device through a session management network element.

In a possible implementation method, the apparatus is a session management network element; the communication unit 1301 is specifically configured to: acquiring a first scheduling parameter of the TSN service from a policy control network element or an application function network element; and acquiring TSN clock domain information corresponding to the TSN service from a database or the second equipment.

In the second embodiment, the processing unit 1302 is configured to obtain a second scheduling parameter of a TSN service, where the second scheduling parameter is set based on a clock of a 5G system, and the second scheduling parameter is used for a first device to transmit a packet of the TSN service, where the first device is a terminal device or a user plane network element; the processing unit 1302 is configured to determine a third scheduling parameter according to the second scheduling parameter, where the third scheduling parameter is set based on a clock of the 5G system, and the third scheduling parameter is used for an access network device to transmit a packet of the TSN service; the communication unit 1301 is further configured to send the third scheduling parameter to the access network device.

In a possible implementation method, the processing unit 1302 is configured to obtain a second scheduling parameter of a TSN service, and specifically includes: the processing unit 1302 is configured to obtain a first scheduling parameter of the TSN service and TSN clock domain information corresponding to the TSN service, where the first scheduling parameter is used to indicate time information for transmitting a packet of the TSN service, and the first scheduling parameter is set based on a clock corresponding to the TSN clock domain information; and adjusting the first scheduling parameter according to the clock corresponding to the TSN clock domain information and the clock of the 5G system to obtain the second scheduling parameter.

In a possible implementation method, the processing unit 1302 is configured to adjust the first scheduling parameter according to a clock corresponding to the TSN clock domain information and a clock of the 5G system, to obtain the second scheduling parameter, and specifically includes: the processing unit 1302 is configured to determine a clock deviation according to a clock corresponding to the TSN clock domain information and a clock of the 5G system; and adjusting the first scheduling parameter according to the clock deviation to obtain the second scheduling parameter.

In a possible implementation method, the processing unit 1302 is configured to adjust the first scheduling parameter according to the clock offset to obtain the second scheduling parameter, and specifically includes: the processing unit 1302 is configured to determine, according to the time at which the gating operation cycle of the port in the time information indicated by the first scheduling parameter starts to be executed and the time offset in the clock offset, the time at which the gating operation cycle of the port in the time information indicated by the second scheduling parameter starts to be executed; and determining the duration of the gating state of the port in the time information indicated by the second scheduling parameter according to the duration of the gating state of the port in the time information indicated by the first scheduling parameter and the frequency deviation in the clock deviation.

In a possible implementation method, the apparatus is a user plane network element, and the processing unit 1302 is specifically configured to obtain the first scheduling parameter from a centralized network configuration network element through the communication unit 1301; alternatively, the apparatus is a session management network element, and the processing unit 1302 is specifically configured to obtain the first scheduling parameter from a policy control network element or an application function network element.

In a possible implementation method, the apparatus is a session management network element; the processing unit 1302 is specifically configured to obtain the second scheduling parameter from an application function network element or a policy control network element through the communication unit 1301.

In a possible implementation method, the communication unit 1301 is further configured to send the second scheduling parameter to the first device.

In a possible implementation method, the processing unit 1302 is configured to determine a third scheduling parameter according to the second scheduling parameter, and specifically includes: the TSN service is a downlink TSN service, and the processing unit 1302 is configured to determine the third scheduling parameter according to the second scheduling parameter, the residence time information of the TSN service packet at the terminal device side, and the transmission delay information of the TSN service packet between the terminal device and the access network device; or, the TSN service is an uplink TSN service, and the processing unit 1302 is configured to determine the third scheduling parameter according to the second scheduling parameter, the residence time information of the packet of the TSN service on the user plane network element side, and the transmission delay information of the packet of the TSN service between the terminal device and the user plane network element.

It should be understood that the processing apparatus 1300 of the TSN service may be used to implement the steps executed by the second device in the method according to the embodiment of the present invention, and reference may be made to the above for related features, which are not described herein again.

If the processing apparatus 1300 of the TSN service is a second device, the second device is presented in a form of dividing each functional module in an integrated manner. A "module" herein may refer to a particular ASIC, a circuit, a processor and memory that execute one or more software or firmware programs, an integrated logic circuit, and/or other device that provides the described functionality.

Specifically, the functions/implementation procedures of the communication unit 1301 and the processing unit 1302 in fig. 13 can be implemented by the processor 1201 in fig. 12 calling a computer executing instruction stored in the memory 1203. Alternatively, the function/implementation procedure of the processing unit 1302 in fig. 13 may be implemented by the processor 1201 in fig. 12 calling a computer executing instruction stored in the memory 1203, and the function/implementation procedure of the communication unit 1301 in fig. 13 may be implemented by the communication interface 1204 in fig. 12.

Optionally, when the processing device 1300 of the TSN service is a chip or a circuit, the function/implementation process of the communication unit 1301 can also be implemented by a pin or a circuit. Alternatively, when the processing apparatus 1300 of the TSN service is a chip, the memory 1203 may be a storage unit in the chip, such as a register, a cache, and the like.

Of course, when the processing apparatus 1300 of the TSN service is a second device, the memory 1203 may be a storage unit located outside a chip in the second device, which is not specifically limited in this embodiment of the application.

The present application may perform division of functional modules on the apparatus according to the above method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, the division of the modules in the present application is schematic, and is only a logical function division, and there may be another division manner in actual implementation. For example, in the case of dividing each functional module by corresponding functions, fig. 14 shows a schematic diagram of a processing device of a TSN service, where the processing device 1400 of the TSN service may be the application function network element involved in the foregoing embodiments, and the processing device 1400 of the TSN service includes a communication unit 1401 and a processing unit 1402.

The processing apparatus 1400 of the TSN service may implement the following operations:

in a first embodiment, the communication unit 1401 is configured to obtain a first scheduling parameter of a TSN service and TSN clock domain information corresponding to the TSN service, where the first scheduling parameter is used to indicate time information for transmitting a packet of the TSN service, and the first scheduling parameter is set based on a clock corresponding to the TSN clock domain information; the processing unit 1402 is configured to adjust the first scheduling parameter according to the clock corresponding to the TSN clock domain information and the clock of the 5G system, so as to obtain a second scheduling parameter, where the second scheduling parameter is set based on the clock of the 5G system; the communication unit 1401 is further configured to transmit a packet of the TSN service according to the second scheduling parameter.

In a possible implementation method, the processing unit 1402 is specifically configured to: determining clock deviation according to the clock corresponding to the TSN clock domain information and the clock of the 5G system; and adjusting the first scheduling parameter according to the clock deviation to obtain the second scheduling parameter.

In a possible implementation method, the processing unit 1402 is configured to determine a clock deviation according to a clock corresponding to the TSN clock domain information and a clock of the 5G system, and specifically includes: the processing unit 1402 is configured to determine, according to the time at which the gating operation cycle of the port in the time information indicated by the first scheduling parameter starts to be executed and the time offset in the clock offset, the time at which the gating operation cycle of the port in the time information indicated by the second scheduling parameter starts to be executed; and determining the duration of the gating state of the port in the time information indicated by the second scheduling parameter according to the duration of the gating state of the port in the time information indicated by the first scheduling parameter and the frequency deviation in the clock deviation.

In a possible implementation method, the communication unit 1401 is configured to obtain a first scheduling parameter of a TSN service and TSN clock domain information corresponding to the TSN service, and specifically includes: the communication unit 1401 is configured to obtain the first scheduling parameter and the TSN clock domain information from a session management network element in a session modification procedure; or, the TSN clock domain information is acquired from a database in a session establishment procedure, and the first scheduling parameter is acquired from a session management network element in a session modification procedure.

In one possible implementation method, the time information includes a time at which a gating operation cycle of a port of the apparatus starts to be executed and a duration of a gating state of the port.

In a second embodiment, the communication unit 1401 is configured to receive a second scheduling parameter of a TSN service from a second device, where the second scheduling parameter is used to indicate time information for transmitting a packet of the TSN service, the second scheduling parameter is determined according to a first scheduling parameter of the TSN service and a clock offset, the clock offset is determined according to a clock of a TSN clock domain corresponding to the TSN service and a clock of a 5G system, the first scheduling parameter is set based on the clock of the TSN clock domain, and the second scheduling parameter is set based on the clock of the 5G system; the communication unit 1401 is further configured to transmit a packet of the TSN service according to the second scheduling parameter.

It should be understood that the processing apparatus 1400 of the TSN service may be used to implement the steps executed by the first device in the method according to the embodiment of the present invention, and reference may be made to the above for related features, which are not described herein again.

If the processing apparatus 1400 of the TSN service is a first device, the first device is presented in a form of dividing each functional module in an integrated manner. A "module" herein may refer to a particular ASIC, a circuit, a processor and memory that execute one or more software or firmware programs, an integrated logic circuit, and/or other device that provides the described functionality.

In particular, the functions/implementation procedures of the communication unit 1401 and the processing unit 1402 in fig. 14 may be implemented by the processor 1201 in fig. 12 calling a computer executing instructions stored in the memory 1203. Alternatively, the function/implementation procedure of the processing unit 1402 in fig. 14 may be implemented by the processor 1201 in fig. 12 calling a computer executing instruction stored in the memory 1203, and the function/implementation procedure of the communication unit 1401 in fig. 14 may be implemented by the communication interface 1204 in fig. 12.

Alternatively, when the processing device 1400 of the TSN service is a chip or a circuit, the function/implementation process of the communication unit 1401 may also be implemented by a pin or a circuit. Alternatively, when the processing device 1400 of the TSN service is a chip, the memory 1203 may be a storage unit in the chip, such as a register, a cache, and the like.

Of course, when the processing apparatus 1400 of the TSN service is a first device, the memory 1203 may be a storage unit located outside a chip in the first device, which is not specifically limited in this embodiment of the application.

Those of ordinary skill in the art will understand that: the various numbers of the first, second, etc. mentioned in this application are only used for the convenience of description and are not used to limit the scope of the embodiments of this application, but also to indicate the sequence. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one" means one or more. At least two means two or more. "at least one," "any," or similar expressions refer to any combination of these items, including any combination of singular or plural items. For example, at least one (one ) of a, b, or c, may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple. "plurality" means two or more, and other terms are analogous. Furthermore, for elements (elements) that appear in the singular form "a," an, "and" the, "they are not intended to mean" one or only one "unless the context clearly dictates otherwise, but rather" one or more than one. For example, "a device" means for one or more such devices.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device including one or more available media integrated servers, data centers, and the like. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

The various illustrative logical units and circuits described in this application may be implemented or operated upon by design of a general purpose processor, a digital signal processor, an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof. A general-purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other similar configuration.

The steps of a method or algorithm described in the embodiments herein may be embodied directly in hardware, in a software element executed by a processor, or in a combination of the two. The software cells may be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. For example, a storage medium may be coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC.

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

Although the present application has been described in conjunction with specific features and embodiments thereof, it will be evident that various modifications and combinations can be made thereto without departing from the spirit and scope of the application. Accordingly, the specification and figures are merely exemplary of the present application as defined in the appended claims and are intended to cover any and all modifications, variations, combinations, or equivalents within the scope of the present application. It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include such modifications and variations.

Claims

1. A method for processing a time delay sensitive network (TSN) service is characterized by comprising the following steps:

the method comprises the steps that first equipment obtains a first scheduling parameter of a TSN service and TSN clock domain information corresponding to the TSN service, the first scheduling parameter is used for indicating time information of transmitting a message of the TSN service, and the first scheduling parameter is based on a clock corresponding to the TSN clock domain information;

2. The method of claim 1, wherein the adjusting, by the first device, the first scheduling parameter according to the clock corresponding to the TSN clock domain information and the clock of the 5G system to obtain a second scheduling parameter comprises:

the first device determines clock deviation according to the clock corresponding to the TSN clock domain information and the clock of the 5G system;

and the first equipment adjusts the first scheduling parameter according to the clock deviation to obtain the second scheduling parameter.

3. The method of claim 2, wherein the clock skew comprises a time skew and/or a frequency skew between a clock to which the TSN clock domain information corresponds and a clock of the 5G system.

4. The method of claim 2, wherein the adjusting, by the first device, the first scheduling parameter according to the clock offset to obtain the second scheduling parameter comprises:

the first device determines the time for starting execution of the gating operation cycle of the port in the time information indicated by the second scheduling parameter according to the time for starting execution of the gating operation cycle of the port in the time information indicated by the first scheduling parameter and the time deviation in the clock deviation;

and the first equipment determines the duration of the gating state of the port in the time information indicated by the second scheduling parameter according to the duration of the gating state of the port in the time information indicated by the first scheduling parameter and the frequency deviation in the clock deviation.

5. The method according to any one of claims 1-4, wherein the acquiring, by the first device, the first scheduling parameter of the TSN service and the TSN clock domain information corresponding to the TSN service includes:

the first device acquires the first scheduling parameter and the TSN clock domain information from a session management network element in a session modification process; alternatively, the first and second electrodes may be,

and the first equipment acquires the TSN clock domain information from a database in a session establishing process, and acquires the first scheduling parameter from a session management network element in a session modifying process.

6. A method for processing TSN service is characterized by comprising the following steps:

a second device acquires a second scheduling parameter of the TSN service, wherein the second scheduling parameter is based on a clock of a 5G system, the second scheduling parameter is used for a first device to transmit a message of the TSN service, and the first device is a terminal device or a user plane network element;

the second equipment determines a third scheduling parameter according to the second scheduling parameter, wherein the third scheduling parameter is based on the clock of the 5G system, and the third scheduling parameter is used for the access network equipment to transmit the message of the TSN service;

7. The method of claim 6, wherein the second device obtaining the second scheduling parameter for the TSN traffic comprises:

the second device determines the clock deviation between the clock of the TSN clock domain corresponding to the TSN service and the clock of the 5G system, and acquires a first scheduling parameter of the TSN service;

and the second equipment determines the second scheduling parameter according to the first scheduling parameter and the clock deviation.

8. The method of claim 7, wherein the second device obtains the clock bias from a user plane network element.

9. The method of claim 7, wherein the second device obtaining the first scheduling parameter for the TSN traffic comprises:

the second device is an application function network element, and the second device acquires the first scheduling parameter from a centralized network configuration network element; alternatively, the first and second electrodes may be,

the second device is a session management network element, and the second device acquires the first scheduling parameter from a policy control network element or an application function network element.

10. The method of claim 6, wherein the second device obtaining the second scheduling parameter for the TSN traffic comprises:

and the second device is a session management network element, and the second device acquires the second scheduling parameter from an application function network element or a policy control network element.

11. The method of any of claims 6-10, further comprising:

the second device sends the second scheduling parameter to the first device.

12. The method according to any of claims 6-10, wherein the second scheduling parameter is used to indicate time information for transmitting packets of the TSN traffic, and the time information includes a time when a gating operation cycle of a port of the first device starts to be executed and a duration of a gating state of the port.

13. The method of any of claims 6-10, wherein the second device determining the third scheduling parameter based on the second scheduling parameter comprises:

the TSN service is a downlink TSN service, and the second device determines the third scheduling parameter according to the second scheduling parameter, the residence time information of the TSN service message on the terminal device side and the transmission delay information of the TSN service message between the terminal device and the access network device; alternatively, the first and second electrodes may be,

and determining the third scheduling parameter according to the second scheduling parameter, the residence time information of the TSN service message on the user plane network element side and the transmission delay information of the TSN service message between the terminal equipment and the user plane network element.

14. A processing device of a time delay sensitive network (TSN) service is characterized by comprising a communication unit and a processing unit;

the communication unit is configured to acquire a first scheduling parameter of a TSN service and TSN clock domain information corresponding to the TSN service, where the first scheduling parameter is used to indicate time information for transmitting a packet of the TSN service, and the first scheduling parameter is based on a clock corresponding to the TSN clock domain information;

the processing unit is used for adjusting the first scheduling parameter according to the clock corresponding to the TSN clock domain information and the clock of the 5G system to obtain a second scheduling parameter;

the communication unit is further configured to transmit a packet of the TSN service according to the second scheduling parameter.

15. The apparatus as claimed in claim 14, wherein said processing unit is specifically configured to:

determining clock deviation according to the clock corresponding to the TSN clock domain information and the clock of the 5G system;

and adjusting the first scheduling parameter according to the clock deviation to obtain the second scheduling parameter.

16. The apparatus of claim 15, wherein the processing unit is configured to adjust the first scheduling parameter according to the clock offset to obtain the second scheduling parameter, and specifically includes:

the processing unit is configured to determine, according to the time at which the gating operation cycle of the port in the time information indicated by the first scheduling parameter starts to be executed and the time offset in the clock offset, the time at which the gating operation cycle of the port in the time information indicated by the second scheduling parameter starts to be executed;

the processing unit is configured to determine, according to the duration of the gating state of the port in the time information indicated by the first scheduling parameter and the frequency deviation in the clock deviation, the duration of the gating state of the port in the time information indicated by the second scheduling parameter.

17. A device for processing TSN traffic, comprising: a communication unit and a processing unit;

the processing unit is configured to obtain a second scheduling parameter of the TSN service, where the second scheduling parameter is based on a clock of a 5G system, and the second scheduling parameter is used for a first device to transmit a packet of the TSN service, where the first device is a terminal device or a user plane network element;

the processing unit is configured to determine a third scheduling parameter according to the second scheduling parameter, where the third scheduling parameter is based on a clock of the 5G system, and the third scheduling parameter is used for an access network device to transmit a packet of the TSN service;

the communication unit is further configured to send the third scheduling parameter to the access network device.

18. The apparatus as claimed in claim 17, wherein said processing unit is specifically configured to:

determining the clock deviation between the clock of the TSN clock domain corresponding to the TSN service and the clock of the 5G system, and acquiring a first scheduling parameter of the TSN service;

and determining the second scheduling parameter according to the first scheduling parameter and the clock deviation.

19. A processing system of TSN business is characterized in that the processing system comprises an access network device and a second device;

the second device is configured to obtain a second scheduling parameter of the TSN service, where the second scheduling parameter is based on a clock of a 5G system, and the second scheduling parameter is used for the first device to transmit a packet of the TSN service; determining a third scheduling parameter according to the second scheduling parameter, wherein the third scheduling parameter is based on a clock of the 5G system, and the third scheduling parameter is used for an access network device to transmit a message of the TSN service; sending the third scheduling parameter to the access network device;

20. The system according to claim 19, wherein the second device is configured to obtain the second scheduling parameter of the TSN service, and specifically includes:

the second device is used for determining the clock deviation between the clock of the TSN clock domain corresponding to the TSN service and the clock of the 5G system, and acquiring a first scheduling parameter of the TSN service; and determining the second scheduling parameter according to the first scheduling parameter and the clock deviation.

21. The system of any one of claims 19-20, further comprising a first device;

the second device is further configured to send the second scheduling parameter to the first device;

and the first device is configured to transmit the message of the TSN service according to the second scheduling parameter.

22. A computer-readable storage medium having stored therein instructions which, when executed on a computer, cause the computer to perform the method of any one of claims 1-5, or any one of claims 6-13.