WO2020259206A1

WO2020259206A1 - Method, apparatus and system for transmitting parameters

Info

Publication number: WO2020259206A1
Application number: PCT/CN2020/093275
Authority: WO
Inventors: 罗海燕; 黄曲芳; 戴明增; 曾清海
Original assignee: 华为技术有限公司
Priority date: 2019-06-24
Filing date: 2020-05-29
Publication date: 2020-12-30
Also published as: CN112135329A; CN112135329B

Abstract

Provided in embodiments of the present application are a method, apparatus, and system for transmitting parameters. Ethernet protocol layer parameters may be transmitted in a process of establishing or modifying a PDU session so that a wireless access network device optimizes transmission on the basis of the Ethernet protocol layer parameters. In the method, a first node sends to a core network device a first message for requesting that the core network device establish or modify a PDU session of the first node. The core network device receives the first message and sends to the wireless access network device a second message for establishing or modifying the PDU session. The second message comprises one or more sets of Ethernet protocol layer parameters, and the Ethernet protocol layer parameters comprise one or more of the following: data packet size, data packet period, data packet arrival time, data packet lifetime, receiving window, Ethernet type, and Ethernet packet information. The Ethernet protocol layer parameters are used to optimize data transmission between the first node and the wireless access network device.

Description

Parameter transmission method, device and system

This application claims the priority of a Chinese patent application filed with the State Intellectual Property Office on June 24, 2019, the application number is 201910551590.X, and the application name is "parameter transmission method, device and system", the entire content of which is incorporated by reference In this application.

Technical field

This application relates to the field of communications, and in particular to a parameter transmission method, device and system.

Background technique

As shown in Figure 1, the industrial Internet of Things (IIoT), which is currently a research hotspot, mainly includes: line controllers, machine controllers, and equipment (such as sensors) There are three types of nodes (actuator, I/O box, etc.) (hereinafter referred to as IIoT nodes). In addition, IIoT mainly includes: the communication between the line controller and the machine controller (controller to controller-1, C-2-C-1), the communication between the machine controller and the machine controller (C-2- C-2), communication between the machine controller and the device (controller to device, C-2-D), and communication between the devices (device to device, D-2-D) are four types of communication.

Among them, different IIoT nodes in the traditional IIoT are connected by wires, and after the IIoT is wireless, different IIoT nodes can communicate through the Ethernet (ethernet) protocol based on the wireless network architecture. For example, the line controller located in the core network communicates with the machine controller through core network equipment and base stations. At the same time, after IIoT becomes wireless, many Ethernet protocol layer parameters can be used to optimize the underlying transmission and reduce the transmission overhead, thereby achieving cross-layer optimization. For example, the core network device may send the message cycle, message size, and message arrival time to the base station to optimize the data transmission of the time sensitive network (TSN) service. However, there is no relevant solution for how to transmit Ethernet protocol layer parameters after IIoT becomes wireless.

Summary of the invention

The embodiments of the application provide a parameter transmission method, device, and system, which can transmit Ethernet protocol layer parameters during the establishment of a PDU session, so that wireless access network equipment can optimize data transmission based on the Ethernet protocol layer parameters and improve Optimized performance of wireless access network equipment.

In order to achieve the foregoing objectives, the embodiments of the present application adopt the following technical solutions:

In the first aspect, a parameter transmission method and corresponding device are provided. In this solution, the radio access network device receives the first message from the first node, and sends the first message to the core network device, where the first message is used to request the core network device to establish or modify the Protocol data unit PDU session. The radio access network device receives a second message from the core network device, the second message is used to establish or modify the PDU session, the second message includes one or more sets of Ethernet protocol layer parameters, the Ethernet protocol layer parameters Including one or more of the following: data packet size, data packet period, data packet arrival time, data packet survival time, receiving window, Ethernet type, and Ethernet packet information; among them, the Ethernet protocol layer parameters are used for optimization Data transmission between the first node and the radio access network device. Based on this solution, the core network device transmits Ethernet protocol layer parameters to the wireless access network device during the process of establishing or modifying the PDU session, so that the wireless access network device can optimize the first node and the wireless access network device based on the Ethernet protocol layer parameters. Data transmission between wireless access network devices.

In a possible design, the second message includes the identifier of the foregoing PDU session, and the set of Ethernet protocol layer parameters corresponds to the identifier of the foregoing PDU session.

In a possible design, the second message includes a quality of service flow identifier QFI, and the set of Ethernet protocol layer parameters corresponds to one QFI; or, the second message includes multiple QFIs, and the foregoing multiple sets of Ethernet protocol layer parameters Each group of Ethernet protocol layer parameters in corresponds to each of the multiple QFIs.

In a possible design, the parameter transmission method provided in the embodiment of the present application further includes: the radio access network device sends the identifier of the first node, the first channel identifier, and the Ethernet corresponding to the first channel identifier to the second node. Network protocol layer parameters, the first channel identifier is used to indicate a channel between the first node and the second node, and the Ethernet protocol layer parameters corresponding to the first channel identifier include the set of Ethernet protocol layer parameters, or, The Ethernet protocol layer parameters corresponding to the first channel identifier include some or all of the multiple sets of Ethernet protocol layer parameters, and the first node is connected to the radio access network device through the second node. Based on this solution, on the one hand, the embodiment of the application transmits Ethernet protocol layer parameters to the wireless access network device during the establishment or modification of the PDU session, so that the wireless access network device can optimize the first node based on the Ethernet protocol layer parameters The data is transmitted between the second node and the wireless access network device; on the other hand, because the access network device also sends Ethernet protocol layer parameters to the second node, the second node can also be based on the Ethernet protocol layer The parameters optimize the data transmission between the first node and the second node.

In a possible design, the parameter transmission method provided in the embodiment of the present application further includes: the radio access network device sends a second channel identifier corresponding to the first channel identifier to the second node, where the second channel identifier is used to indicate A channel between the second node and the above-mentioned wireless access network device. Based on this solution, since the wireless access network device sends the second channel identifier corresponding to the first channel identifier to the second node, the second node can determine to connect to the wireless connection after receiving uplink data from the first channel of the first node. The second channel through which the network access device sends the uplink data.

In a possible design, the foregoing first channel identifier is a logical channel identifier, a data radio bearer identifier, or a side link data radio bearer identifier.

In a possible design, the foregoing second channel identifier is a logical channel identifier or a data radio bearer identifier.

In a possible design, the parameter transmission method provided in the embodiment of the present application further includes: the radio access network device sends a third message to the first node, and the third message includes a set of Ethernet protocol layer parameters and the one The QFI corresponding to the group of Ethernet protocol layer parameters or each group of Ethernet protocol layer parameters in multiple groups of Ethernet protocol layer parameters and the QFI corresponding to each group of Ethernet protocol layer parameters. The QFI corresponding to the Ethernet protocol layer parameters is used for The first node determines the QFI corresponding to the uplink data according to the Ethernet protocol layer parameters of the uplink data. Based on this solution, the wireless access network device sends the QFI corresponding to the above-mentioned Ethernet protocol layer parameters to the first node, so that the first node can determine the QFI corresponding to the uplink data according to the Ethernet protocol layer parameters of the uplink data it generates. .

In the second aspect, a parameter transmission method and corresponding device are provided. In this solution, the core network device receives a first message from the first node, and the first message is used to request the core network device to establish or modify the PDU session of the first node. The core network device sends a second message to the radio access network device, the second message is used to establish or modify the PDU session, and the second message includes one or more sets of Ethernet protocol layer parameters, and the Ethernet protocol layer parameters Including one or more of the following: data packet size, data packet period, data packet arrival time, data packet survival time, receiving window, Ethernet type, and Ethernet packet information; among them, the Ethernet protocol layer parameters are used for optimization Data transmission between the first node and the wireless access network device. Among them, the technical effects brought about by the second aspect can be referred to the technical effects brought about by the above-mentioned first aspect, which will not be repeated here.

In a possible design, the second message includes the identifier of the PDU session, and the set of Ethernet protocol layer parameters corresponds to the identifier of the PDU session.

In a possible design, the parameter transmission method provided in the embodiment of the present application further includes: the core network device sends a set of Ethernet protocol layer parameters and the QFI or QFI corresponding to the set of Ethernet protocol layer parameters to the first node. Each group of Ethernet protocol layer parameters in the multiple groups of Ethernet protocol layer parameters and the QFI corresponding to each group of Ethernet protocol layer parameters, the QFI corresponding to the Ethernet protocol parameters is used for the Ethernet protocol layer of the first node according to the uplink data The parameter determines the QFI corresponding to the uplink data. Based on this solution, since the core network device sends the QFI corresponding to the Ethernet protocol layer parameter to the first node, the first node can determine the QFI corresponding to the uplink data according to the Ethernet protocol layer parameters of the uplink data it generates.

In the third aspect, a parameter transmission method and corresponding device are provided. In this solution, the first node sends a first message to the core network device, and the first message is used to request the core network device to establish or modify the protocol data unit PDU session of the first node. The first node receives the QFI corresponding to each group of Ethernet protocol layer parameters and each group of Ethernet protocol layer parameters in one or more groups of Ethernet protocol layer parameters from the core network device. QFI is used by the first node to determine the QFI corresponding to the uplink data according to the Ethernet protocol layer parameters of the uplink data, where the set of Ethernet protocol layer parameters corresponds to QFI, and the Ethernet protocol layer parameters include one or more of the following : Data packet size, data packet period, data packet arrival time, data packet survival time, receiving window, Ethernet type, and Ethernet packet information. Based on this solution, since the core network device sends the QFI corresponding to each group of Ethernet protocol layer parameters to the first node, the first node can determine the QFI corresponding to the uplink data according to the Ethernet protocol layer parameters of the uplink data it generates.

In the fourth aspect, a parameter transmission method and corresponding device are provided. In this solution, the first protocol layer entity of the first node obtains Ethernet protocol layer parameters, and the Ethernet protocol layer parameters include one or more of the following: data packet size, data packet period, data packet arrival time, data packet survival Time, receiving window, Ethernet type, and Ethernet packet information. The first protocol layer entity of the first node sends the Ethernet protocol layer parameter to the second protocol layer entity of the first node, where the Ethernet protocol layer parameter is used to optimize data between the first node and the second node transmission. Based on this solution, since the first protocol layer entity of the first node can send Ethernet protocol layer parameters to the second protocol layer entity of the first node, the second protocol layer entity of the first node can directly use the Ethernet protocol layer Parameters are optimized. Therefore, on the one hand, the Ethernet protocol layer parameters can be transmitted between different protocol layers in the first node; on the other hand, the first node can directly obtain the Ethernet protocol layer parameters, which can reduce the complexity of the first node transmission optimization degree.

In a possible design, the parameter transmission method provided in the embodiment of the present application further includes: the first node obtains subnet topology information of the second node, and the subnet topology information is used for the first protocol of the first node The layer entity determines the format of the data sent to the second protocol layer entity of the first node. Based on this solution, the first node can also perform transmission optimization according to the subnet topology information reported by the second node, so that the optimization performance of the first node can be improved.

In a possible design, the parameter transmission method provided in the embodiment of the present application further includes: the first node obtains the first protocol layer identifier of the second node, and the first protocol layer identifier of the second node is used to determine the direction The interface identifier corresponding to the data sent by the second node. Based on this solution, the first node can also perform transmission optimization according to the first protocol layer identifier of the second node reported by the second node, so that the optimization performance of the first node can be improved.

In a possible design, the foregoing first protocol layer entity includes an application layer entity or an Ethernet protocol layer entity.

In a possible design, the foregoing second protocol layer entity includes one or more of the following: a radio link control RLC layer entity, a medium access control MAC layer entity, or a physical PHY layer entity.

In a fifth aspect, a communication device is provided for implementing the above-mentioned various methods. The communication device may be the radio access network device in the first aspect mentioned above, or the device including the radio access network device mentioned above, or the device included in the radio access network device mentioned above; or, the communication device may be the second device mentioned above. The core network device in the aspect, or the device including the above core network device, or the device included in the above core network device; or, the communication device may be the first node in the third aspect or the fourth aspect, or include the above The device of the first node, or the device included in the above-mentioned first node. The communication device includes a module, unit, or means corresponding to the foregoing method, and the module, unit, or means can be implemented by hardware, software, or hardware execution of corresponding software. The hardware or software includes one or more modules or units corresponding to the above-mentioned functions.

In a sixth aspect, a communication device is provided, including: a processor and a memory; the memory is used to store computer instructions, and when the processor executes the instructions, the communication device executes the method described in any of the above aspects. The communication device may be the radio access network device in the first aspect mentioned above, or the device including the radio access network device mentioned above, or the device included in the radio access network device mentioned above; or, the communication device may be the second device mentioned above. The core network device in the aspect, or the device including the above core network device, or the device included in the above core network device; or, the communication device may be the first node in the third aspect or the fourth aspect, or include the above The device of the first node, or the device included in the above-mentioned first node.

In a seventh aspect, a communication device is provided, including: a processor; the processor is configured to couple with a memory, and after reading an instruction in the memory, execute the method according to any of the foregoing aspects according to the instruction. The communication device may be the radio access network device in the first aspect mentioned above, or the device including the radio access network device mentioned above, or the device included in the radio access network device mentioned above; or, the communication device may be the second device mentioned above. The core network device in the aspect, or the device including the above core network device, or the device included in the above core network device; or, the communication device may be the first node in the third aspect or the fourth aspect, or include the above The device of the first node, or the device included in the above-mentioned first node.

In an eighth aspect, a computer-readable storage medium is provided. The computer-readable storage medium stores instructions that, when run on a communication device, enable a computer to execute the method described in any of the above aspects. The communication device may be the radio access network device in the first aspect mentioned above, or the device including the radio access network device mentioned above, or the device included in the radio access network device mentioned above; or, the communication device may be the second device mentioned above. The core network device in the aspect, or the device including the above core network device, or the device included in the above core network device; or, the communication device may be the first node in the third aspect or the fourth aspect, or include the above The device of the first node, or the device included in the above-mentioned first node.

In a ninth aspect, a computer program product containing instructions is provided, which when running on a communication device, enables a computer to execute the method described in any of the above aspects. The communication device may be the radio access network device in the first aspect mentioned above, or the device including the radio access network device mentioned above, or the device included in the radio access network device mentioned above; or, the communication device may be the second device mentioned above. The core network device in the aspect, or the device including the above core network device, or the device included in the above core network device; or, the communication device may be the first node in the third aspect or the fourth aspect, or include the above The device of the first node, or the device included in the above-mentioned first node.

In a tenth aspect, a communication device is provided (for example, the communication device may be a chip or a chip system), and the communication device includes a processor for implementing the functions involved in any of the above aspects. In a possible design, the communication device further includes a memory for storing necessary program instructions and data. When the communication device is a chip system, it may be composed of chips, or may include chips and other discrete devices.

Among them, the technical effects brought about by any of the design methods of the fifth aspect to the tenth aspect can be referred to the technical effects brought about by different design methods in the first aspect or the second aspect or the third aspect or the fourth aspect. I won't repeat them here.

In an eleventh aspect, a communication system is provided, which includes the radio access network device described in the first aspect and the core network device described in the second aspect.

In a twelfth aspect, a communication system is provided. The communication system includes the second node described in the first and fourth aspects, the radio access network device described in the first aspect, and the radio access network device described in the second aspect. Core network equipment.

In a thirteenth aspect, a communication system is provided, which includes the radio access network device described in the first aspect, the core network device described in the second aspect, and the first node described in the third aspect.

In a fourteenth aspect, a communication system is provided, which includes the second node described in the first and fourth aspects, the radio access network device described in the first aspect, and the communication system described in the second aspect. The core network device and the first node described in the third aspect.

In a fifteenth aspect, a communication system is provided. The communication system includes the second node described in the first and fourth aspects and the first node described in the fourth aspect.

Description of the drawings

Figure 1 is a schematic diagram of an existing industrial Internet of Things structure;

2a is a schematic structural diagram of a communication system provided by an embodiment of this application;

2b is a schematic structural diagram of another communication system provided by an embodiment of this application;

2c is a schematic structural diagram of another communication system provided by an embodiment of this application;

3 is a schematic structural diagram of a communication device provided by an embodiment of the application;

FIG. 4 is a first schematic flowchart of a parameter transmission method provided by an embodiment of the application;

FIG. 5 is a second schematic flowchart of a parameter transmission method provided by an embodiment of this application;

FIG. 6 is a third schematic flowchart of a parameter transmission method provided by an embodiment of this application;

FIG. 7 is a fourth schematic flowchart of a parameter transmission method provided by an embodiment of this application;

FIG. 8 is a fifth schematic flowchart of a parameter transmission method provided by an embodiment of this application;

FIG. 9 is a sixth flowchart of a parameter transmission method provided by an embodiment of this application;

FIG. 10 is a seventh schematic flowchart of a parameter transmission method provided by an embodiment of this application;

FIG. 11 is a schematic structural diagram of a wireless access network device provided by an embodiment of this application;

FIG. 12 is a schematic structural diagram of a core network device provided by an embodiment of this application;

FIG. 13 is a schematic structural diagram of a first node provided by an embodiment of this application;

FIG. 14 is a schematic structural diagram of another first node provided by an embodiment of this application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Wherein, in the description of this application, unless otherwise specified, "/" means that the objects associated before and after are in an "or" relationship, for example, A/B can mean A or B; in this application, "and/or "It's just an association relationship that describes the associated objects. It means that there can be three kinds of relationships. For example, A and/or B can mean: A alone exists, A and B exist at the same time, and B exists alone. , B can be singular or plural. Also, in the description of this application, unless otherwise specified, "plurality" means two or more than two. "The following at least one item (a)" or similar expressions refers to any combination of these items, including any combination of a single item (a) or plural items (a). For example, at least one item (a) of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple . In addition, in order to facilitate a clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish the same items or similar items with substantially the same function and effect. Those skilled in the art can understand that words such as "first" and "second" do not limit the quantity and order of execution, and words such as "first" and "second" do not limit the difference.

The technical solutions of the embodiments of the present application can be applied to various communication systems. For example: orthogonal frequency-division multiple access (OFDMA), single-carrier frequency-division multiple access (single carrier FDMA, SC-FDMA), the fifth generation (5th generation, 5G) communication system and other systems. The term "system" can be replaced with "network". The OFDMA system can implement wireless technologies such as evolved universal terrestrial radio access (E-UTRA) and ultra mobile broadband (UMB). E-UTRA is an evolved version of the Universal Mobile Telecommunications System (UMTS). The 3rd generation partnership project (3GPP) uses the new version of E-UTRA in long term evolution (LTE) and various versions based on LTE evolution. The 5G communication system is the next generation communication system under study. Among them, 5G communication systems include non-standalone (NSA) 5G mobile communication systems, standalone (SA) 5G mobile communication systems, or NSA’s 5G mobile communication systems and SA’s 5G mobile communication systems. Communication Systems. In addition, the communication system may also be applicable to future-oriented communication technologies, all of which are applicable to the technical solutions provided in the embodiments of the present application. The above-mentioned communication system applicable to the present application is only an example, and the communication system applicable to the present application is not limited to this, and the description is unified here, and the details are not repeated below.

As shown in Fig. 2a, a communication system 10a provided for this application. The communication system 10a includes a first node 20, a wireless access network device 30, and a core network device 40, and the core network device 40 is connected to an IIoT server.

Among them, the IIoT server in the embodiments of the present application may also be referred to as an IIoT controller, which may include a machine controller or a line controller, which is uniformly described here, and the description is applicable to all the embodiments of the present application, and will not be repeated below.

The first node 20 sends a first message to the core network device 40, and the first message is used to request the core network device 40 to establish or modify a protocol data unit (PDU) session of the first node 20, and the core network device 40 After receiving the first message, the device 40 sends a second message to the radio access network device 30. The second message is used to establish or modify the PDU session of the first node 20. The second message includes one or more sets of Ethernet protocol layer parameters, and the Ethernet protocol layer parameters include one or more of the following: data packet size, data packet period, data packet arrival time, data packet survival time, Receive window, Ethernet type, and Ethernet packet information. Among them, the above-mentioned Ethernet protocol layer parameters are used to optimize data transmission between the first node 20 and the wireless access network device 30. Based on this solution, the core network device transmits Ethernet protocol layer parameters to the wireless access network device during the process of establishing or modifying the PDU session, so that the wireless access network device can optimize the first node 20 and the first node 20 based on the Ethernet protocol layer parameters. Data transmission between wireless access network devices 30.

It should be noted that the parameter transmission method provided in the embodiments of the present application only involves some steps in the PDU session establishment or modification process. For other steps in the PDU session establishment or modification process, reference may be made to the prior art, which is explained here in a unified manner. The embodiments will not be repeated.

Optionally, the first node 20 in the communication system 10a is an IIoT node, which may be a device in the industrial Internet of Things, such as a sensor, an actuator, and an I/O box. Etc.; or, it can also be a machine controller in the Industrial Internet of Things.

Or, as shown in FIG. 2b, the embodiment of the present application also provides another communication system 10b. The communication system 10b includes a first node 20, a second node 60, a wireless access network device 30, and a core network device 40, and the core network device 40 is connected to an IIoT server.

The first node 20 sends a first message to the core network device 40. The first message is used to request the core network device 40 to establish or modify the PDU session of the first node 20. After receiving the first message, the core network device 40 sends The radio access network device 30 sends a second message, which is used to establish or modify the PDU session of the first node 20. The second message includes one or more sets of Ethernet protocol layer parameters. After receiving the second message, the radio access network device 30 sends to the second node the identity of the first node, the first channel identity, and the Ethernet protocol layer parameters corresponding to the first channel identity, and the Ethernet corresponding to the first channel identity The protocol layer parameters include a set of Ethernet protocol layer parameters, or the Ethernet protocol layer parameters corresponding to the first channel identifier include some or all of the multiple sets of Ethernet protocol layer parameters. The above-mentioned Ethernet protocol layer parameters include one or more of the following: data packet size, data packet period, data packet arrival time, data packet survival time, receiving window, Ethernet type, and Ethernet packet information. Based on this solution, on the one hand, the embodiment of the application transmits Ethernet protocol layer parameters to the wireless access network device during the establishment or modification of the PDU session, so that the wireless access network device can optimize the first node based on the Ethernet protocol layer parameters The data of 20 is transmitted between the second node 60 and the radio access network device 30; on the other hand, because the radio access network 30 device also sends Ethernet protocol layer parameters to the second node 60, the second node is also The data transmission between the first node 20 and the second node 60 can be optimized based on the Ethernet protocol layer parameters.

Optionally, the first node 20 in the communication system 10b is an IIoT node, which may be a device in the IIoT, such as a sensor, an actuator, an I/O box, etc., The second node 60 is an IIoT node, which can be a machine controller in the IIoT, which can be deployed in other wireless access network equipment (that is, the type of the second node can be a wireless access network equipment), or it can be deployed In the terminal device (that is, the type of the second node may be a terminal device).

Wherein, in the communication system shown in FIG. 2b, the first node 20 may request association from the second node 60. After the second node 60 allows the first node 20 to associate, the second node 60 acts as a relay to assist the first node 20 and Signaling and data transmission between radio access network devices 30. At this time, the second node 60 communicates with the wireless access network device 30 through the Uu port. If the type of the second node 60 is the wireless access network device 30, the second node 60 communicates with the first node 20 through the Uu port. The type of the second node 60 is a terminal device, and the second node 60 communicates with the first node 20 through a sidelink (SL) port. After the first node 20 is associated with the second node 60, the second node 60 can also notify the radio access network device 30 of the association relationship. For example, the second node 60 can send the radio access network device 30 the information of the first node 20 Identification, where the identification of the first node 20 may be one of the identification assigned by the second node 60 to the first node 20, the identification of the first node 20 in the side link, or the application layer identification of the first node 20 Or more.

Or, as shown in FIG. 2c, another communication system 10c is provided in the embodiment of the present application. The communication system 10c includes a first node 20 and a second node 60.

Wherein, in the communication system 10c, the IIoT service data is only transmitted between the first node 20 and the second node 60, and the service data does not need to reach the core network.

Wherein, the first protocol layer entity of the first node 20 obtains Ethernet protocol layer parameters, and sends the obtained Ethernet protocol layer parameters to the second protocol layer entity of the first node. The Ethernet protocol layer parameters include the following: Or more: data packet size, data packet period, data packet arrival time, data packet survival time, receiving window, Ethernet type, and Ethernet packet information. The Ethernet protocol layer parameters are used to optimize data transmission between the first node 20 and the second node 60. Based on this solution, on the one hand, Ethernet protocol layer parameters can be transmitted between different protocol layers in the node; on the other hand, the first node 20 can be reduced to optimize the data transmission between the first node 20 and the second node 60. the complexity.

Optionally, the first node 20 in the communication system 10c can be a machine controller in the IIoT, which can be deployed in other radio access network equipment (that is, the type of the first node 20 can be a radio access network equipment ), at this time, the first node 20 communicates with the second node 60 through the Uu port; or, it can also be deployed in a terminal device (that is, the type of the first node 20 may be a terminal device), at this time, the first node 20 passes through The SL port communicates with the second node 60. The second node 60 may be a device in the IIoT, such as a sensor (sensor), an actuator (actuator), an access device (I/O box), etc.

Optionally, in the

communication systems

10a and 10b provided in the embodiment of the present application, the radio access network device 30 is a device that connects the first node 20 to the wireless network, and may be an evolutionary base station in LTE. B, eNB or eNodeB), or base station gNB or ng-eNB in 5G network or public land mobile network (PLMN), broadband network service gateway (broadband network gateway, BNG), aggregation switch or Non-third generation partnership project (3rd generation partnership project, 3GPP) access equipment, etc., this embodiment of the application does not specifically limit this. Optionally, the base stations in the embodiments of the present application may include base stations of various forms, such as macro base stations, micro base stations (also referred to as small stations), access points, etc., which are not specifically limited in the embodiments of the present application.

In a possible manner, the radio access network device 30 in the embodiment of the present application may be composed of a centralized unit (CU) and one or more distributed units (DU). CU and DU can be understood as the division of radio access network equipment from the perspective of logical functions. Wherein, the CU and DU may be physically separated or deployed together, which is not specifically limited in the embodiment of the present application. The CU and DU can be connected through an interface, for example, an F1 interface. CU and DU can be divided according to the protocol layer of the wireless network. For example, the function settings of the radio resource control (radio resource control, RRC) protocol layer, the service data adaptation protocol stack (service data adaptation protocol, SDAP) protocol layer, and the packet data convergence protocol (packet data convergence protocol, PDCP) protocol layer In the CU, the functions of the radio link control (RLC) protocol layer, the media access control (MAC) protocol layer, and the physical (PHY) protocol layer are set in the DU. It can be understood that the division of the CU and DU processing functions according to this protocol layer is only an example, and the division may also be performed in other ways, which is not specifically limited in the embodiment of the present application.

Optionally, the CU can be composed of the CU control plane (CU-CP) and the CU user plane (CU-UP). CU-CP and CU-UP can be understood as slave logic functions to the CU The angle is divided. Among them, CU-CP and CU-UP can be divided according to the protocol layer of the wireless network. For example, the functions of the PDCP protocol layer corresponding to the RRC protocol layer and the signaling radio bearer (signal radio bearer, SRB) are set in the CU-CP, and the data The function of the PDCP protocol layer corresponding to the data radio bearer (DRB) is set in the CU-UP. In addition, the function of the SDAP protocol layer may also be set in the CU-UP.

Optionally, in the

communication systems

10a and 10b provided in the embodiments of the present application, the core network device 40 is a core network element. For example, the core network device 40 may be a serving gateway (serving gateway, SGW in the LTE core network architecture). ), mobility management entity (mobility management entity, MME), etc.; or, it can also be the user plane function (UPF) network element in the 5G core network architecture, access and mobility management function (access and mobility). Management function (AMF) network elements, etc., which are not specifically limited in the embodiment of the present application.

Optionally, the terminal device in the embodiment of the present application may be a device used to implement a wireless communication function, such as a terminal or a chip that can be used in a terminal. Among them, the terminal may be a user equipment (UE), an access terminal, a terminal unit, a terminal station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, and wireless communication in a 5G network or a future evolved PLMN. Equipment, terminal agent or terminal device, etc. The access terminal can be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), with wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices or wearable devices, virtual reality (VR) terminal devices, augmented reality (AR) terminal devices, industrial control (industrial) Wireless terminal in control), wireless terminal in self-driving, wireless terminal in remote medical, wireless terminal in smart grid, wireless terminal in transportation safety (transportation safety) Terminal, wireless terminal in smart city, wireless terminal in smart home, etc. The terminal can be mobile or fixed.

Optionally, the first node 20, the second node 60, the radio access network device 30, and the core network device 40 in the embodiments of the present application may also be referred to as communication devices, which may be a general-purpose device or a dedicated device. Equipment, this embodiment of the application does not specifically limit this.

Optionally, in the embodiment of the present application, the first node 20, the second node 60, the radio access network device 30, or the core network device 40 in FIG. 2a, FIG. 2b, or FIG. 2c may use the communication in FIG. 3 The device (or communication device) 50 is implemented. FIG. 3 is a schematic structural diagram of a communication device 50 provided by an embodiment of the application. The communication device 50 includes one or more processors 501, a communication bus 502, and at least one communication interface (in FIG. 3, the communication interface 504 and one processor 501 are taken as an example for illustration), optional The memory 503 may also be included.

The processor 501 may be a general-purpose central processing unit (central processing unit, CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more programs for controlling the execution of the program of this application. integrated circuit.

The communication bus 502 may be a peripheral component interconnect standard (PCI) bus or an extended industry standard architecture (EISA) bus, etc. The bus can be divided into address bus, data bus, control bus, etc. For ease of representation, only one thick line is used in FIG. 3 to represent, but it does not mean that there is only one bus or one type of bus. The communication bus 502 is used to connect different components in the communication device 50 so that different components can communicate.

The communication interface 504 may be a transceiver module for communicating with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), etc. For example, the transceiver module may be a device such as a transceiver or a transceiver. Optionally, the communication interface 504 may also be a transceiver circuit located in the processor 501 to implement signal input and signal output of the processor.

The memory 503 may be a device having a storage function. For example, it can be read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM), or other types that can store information and instructions Dynamic storage devices can also be electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM), or other optical disk storage, optical disc storage ( Including compact discs, laser discs, optical discs, digital universal discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program codes in the form of instructions or data structures and can be stored by a computer Any other media taken, but not limited to this. The memory may exist independently and is connected to the processor through the communication line 502. The memory can also be integrated with the processor.

Wherein, the memory 503 is used to store computer execution instructions for executing the solution of the present application, and the processor 501 controls the execution. The processor 501 is configured to execute computer-executable instructions stored in the memory 503, so as to implement the parameter transmission method provided in the embodiment of the present application.

Or, optionally, in the embodiment of the present application, the processor 501 may also perform processing-related functions in the parameter transmission method provided in the following embodiments of the present application, and the communication interface 504 is responsible for communicating with other devices or communication networks. The application embodiment does not specifically limit this.

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

In a specific implementation, as an embodiment, the processor 501 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 3.

In a specific implementation, as an embodiment, the communication device 50 may include multiple processors, such as the processor 501 and the processor 508 in FIG. 3. Each of these processors can be a single-CPU (single-CPU) processor or a multi-core (multi-CPU) processor. The processor here may refer to one or more devices, circuits, and/or processing cores for processing data (for example, computer program instructions).

In a specific implementation, as an embodiment, the communication device 50 may further include an output device 505 and an input device 506. The output device 505 communicates with the processor 501 and can display information in various ways. For example, the output device 505 may be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector (projector) Wait. The input device 506 communicates with the processor 501 and can receive user input in a variety of ways. For example, the input device 506 may be a mouse, a keyboard, a touch screen device, or a sensor device.

After IIOT becomes wireless, there is no relevant solution for how to transmit Ethernet protocol layer parameters in IIoT. Based on this, an embodiment of the present application provides a parameter transmission method. In the parameter transmission method, the first node sends a first message to the core network device, and the first message is used to request the core network device to establish or modify the For the PDU session, after receiving the first message, the core network device sends a second message to the radio access network device. The second message is used to establish or modify the PDU session of the first node. The second message includes one or more sets of Ethernet protocol layer parameters, and the Ethernet protocol layer parameters include one or more of the following: data packet size, data packet period, data packet arrival time, data packet survival time, Receive window, Ethernet type, and Ethernet packet information. Wherein, the above-mentioned Ethernet protocol layer parameters are used for the wireless access network device to optimize the data transmission between the first node and the wireless access network device. Based on this solution, the core network device transmits Ethernet protocol layer parameters to the wireless access network device during the process of establishing or modifying the PDU session, so that the wireless access network device can optimize the first node and wireless network based on the Ethernet protocol layer parameters. Data transmission between access network devices.

The parameter transmission method provided in the embodiment of the present application will be described in detail below with reference to FIG. 4 to FIG. 10 through specific embodiments.

It should be noted that the name of the message between each network element or the name of each parameter in the message in the following embodiments of this application is just an example, and other names may also be used in specific implementations. The embodiments of this application do not make specific details about this. limited.

It should be noted that in the LTE system, the Ethernet protocol layer in the embodiments of the present application can be understood as an existing application layer, or as a new protocol layer between the existing application layer and the PDCP layer; In the NR system, the Ethernet protocol layer in the embodiments of this application can be understood as the existing application layer, and can also be understood as a new protocol layer between the existing application layer and the SDAP layer. This is not specifically limited.

In a possible implementation manner, the parameter transmission method provided in this embodiment of the application is applied to the communication system as shown in FIG. 2a. There is data communication between the IIoT server and the first node, and the first node and the wireless access network device A scenario in which a radio resource control (RRC) connection is established between them, as shown in FIG. 4, is the parameter transmission method provided in this embodiment of the application. The parameter transmission method includes the following steps:

S401: The first node sends a first message to the core network device through the radio access network device. Correspondingly, the core network device receives the first message from the first node through the wireless access network device.

The first message is used to request the core network device to establish or modify the PDU session of the first node.

Optionally, the first message may be a non-access stratum (NAS) message, such as a PDU session establishment request (PDU session establishment request) message or a PDU session modification request (PDU session modification request) message. The first node may include the first message in the RRC message, and send the first message through the RRC connection with the radio access network device. After receiving the RRC message containing the first message from the first node, the radio access network device forwards the first message to the core network device.

Wherein, after the core network device receives the message for requesting to establish or modify the PDU session of the first node, it executes the following step S402 to establish or modify the core network device corresponding to the PDU session of the first node and the radio access network device. For example, the user plane tunnel of the S1 interface or NG3 interface corresponding to the PDU session of the first node, where the data transmission channel between the core network device and the radio access network device corresponding to the PDU session of the first node is modified It can be understood as modifying the quality of service (QoS) flow included in the data transmission channel or modifying the user plane tunnel address.

S402: The core network device sends a second message to the wireless access network device. Correspondingly, the radio access network device receives the second message from the core network device.

The second message is used to establish or modify the PDU session requested by the first node to establish or modify. The second message includes one or more groups of Ethernet protocol layer parameters for optimizing data transmission between the first node and the wireless access network device, and the Ethernet protocol layer parameters include one or more of the following: data packet Size, packet period, packet arrival time, packet lifetime, receive window, Ethernet type, and Ethernet packet information.

Optionally, the second message may be a PDU session resource setup request (PDU session resource setup request) message or a PDU session resource modification request (PDU session resource modification request) message. The second message may include the identifier of the PDU session and the user plane tunnel address on the core network device side corresponding to the PDU session (for example, tunnel endpoint identifier or internet protocol address (IP)). After the radio access network device receives the second message, it can send a reply message to the core network device. The reply message can include the user plane tunnel address on the radio access network device side. So far, the core corresponding to the PDU session of the first node The user plane tunnel between the network device and the wireless access network device is successfully established or modified. Correspondingly, after the establishment or modification of the user plane tunnel corresponding to the PDU session of the first node is completed, the radio access network device can notify the first node to establish or modify the DRB between the first node and the radio access network device, and the related process can be Refer to the prior art, which will not be repeated here. In addition, the second message also includes one or more QoS flows and corresponding QoS parameters (in order to distinguish them from Ethernet protocol layer parameters, they will be referred to as cellular network QoS parameters later), where each QoS flow uses a quality of service flow Identifier (QoS flow identifier, QFI).

Optionally, when the second message includes a set of Ethernet protocol layer parameters, the Ethernet protocol layer parameters may be considered as the PDU session granularity. The set of Ethernet protocol layer parameters may correspond to the identifier of the PDU session of the first node; or, if the PDU session of the first node includes a QoS flow, that is, the PDU session of the first node corresponds to a QFI, then the set of Ethernet The network protocol layer parameters correspond to the QFI that identifies the one QoS flow. Exemplarily, when the set of Ethernet protocol layer parameters corresponds to the PDU session identifier of the first node, the data structure in the second message may be as follows:

>PDU session ID (PDU session ID);

>Ethernet protocol layer parameters (Ethernet parameter);

>QoS flow setup/modification request list (QoS flow setup/modification request list).

Optionally, the second message includes multiple sets of Ethernet protocol layer parameters, and the PDU session of the first node includes multiple QoS flows, that is, when the PDU session of the first node corresponds to multiple QFIs, the multiple sets of Ethernet protocol layer parameters Each group of Ethernet protocol layer parameters in each corresponds to one of the multiple QFIs. At this time, it can be considered that the Ethernet protocol layer parameters take the QoS flow as the granularity, and the core network device may include the mapping relationship between the Ethernet protocol layer parameters and QFI as shown in Table 1 in the second message.

Table 1

以太网协议层参数Ethernet protocol layer parameters	以太网协议层参数对应的QFIQFI corresponding to Ethernet protocol layer parameters
第一组参数The first set of parameters	QFI 1QFI 1
第二组参数The second set of parameters	QFI 2QFI 2
第三组参数The third set of parameters	QFI 3QFI 3

Exemplarily, the mapping relationship between the Ethernet protocol layer parameters and QFI shown in Table 1 can be represented by the following data structure of the second message:

>PDU session ID (PDU session ID);

>QoS flow setup/modification request list (QoS flow setup/modification request list);

>>QFI(QoS Flow Indicator);

>>Ethernet protocol layer parameters (Ethernet parameters).

Optionally, when the second message includes a set of Ethernet protocol layer parameters, and the set of Ethernet protocol layer parameters corresponds to QFI, the data structure in the second message may be similar to that in the second message including multiple sets of Ethernet protocols The difference in the data structure of the layer parameter is that the QoS flow establishment/modification request list in the data structure only contains one QFI and a set of Ethernet protocol layer parameters corresponding to the QFI.

Among them, the meaning of each item in the above Ethernet protocol layer parameters is as follows:

The data packet size (message size) represents the size of the transmitted data packet;

The data packet period (message period) represents the transmission period of the data packet;

The arrival time of a data packet can be the time when the data packet is estimated by the IIoT server to reach the wireless access network device, or it can be the time when the downlink data packet arrives at the first node. In addition, when the arrival time of a data packet is determined, The arrival time of each data packet can be determined according to the data packet cycle;

Data packet survival time (survival time) means that after the data packet transmission fails, the sender needs to start the timer time. The sender must resend the failed data to the receiver within the data packet lifetime, otherwise it will cause the receiver Equipment off

The receiving window (Rx window) indicates the time range for the receiver to receive the data packet, and only the data packet received within the receiver's receiving window can be correctly processed by the receiver;

Ethertype can include EtherCAT, Ethernet Powerlink, Sercos III, Ethernet/IP, Profinet, CC-Link IE Field and Modbus TCP, etc.;

Ethernet packet info can include Ethernet padding information (ethernet padding info), Ethernet frame header size, Ethernet frame sub-headers information, and node information and service information corresponding to the sub-headers. Type (for example, whether the service is a real-time service or a non-real-time service), etc.

Optionally, after the wireless access network device receives the above one or more sets of Ethernet protocol layer parameters, it can perform data transmission between the first node and the wireless access network device according to the received Ethernet protocol layer parameters. optimization. Exemplarily, for uplink transmission, the radio access network device may configure a semi-persistent scheduling (SPS) mode for the first node according to the data packet size and the data packet cycle to reduce control signaling overhead; or, Exemplarily, the radio access network device may determine the appropriate scheduling start time according to the arrival time of the data packet. Exemplarily, for downlink transmission, after the radio access network device determines that the first node fails to receive a certain data packet, it can start a timer according to the survival time, and resend the failed data packet received by the first node to the first node within the survival time. A node to ensure that the first node successfully receives the data packet within the lifetime; or, for example, the wireless access network device may determine an appropriate scheduling time according to the receiving window to ensure that the first node correctly receives and processes the data packet; Or, for example, the wireless access network device may perform DRB mapping according to the Ethernet protocol layer parameters corresponding to the QFI, for example, map the QoS flows identified by the QFI corresponding to the similar Ethernet protocol layer parameters to the same DRB;

Or, exemplary, the wireless access network device may send data packets of real-time services with priority and send data packets of non-real-time services with low priority according to the types of services included in the Ethernet packet information; or, exemplary The first node may send the application layer identifier of the first node and the group identifier of the application layer where the first node is located to the radio access network device, and the radio access network device may allocate the cell radio network temporary identity (cell radio network temporary identifier, C-RNTI), and save the correspondence between the application layer identifier of the first node and the C-RNTI. The subsequent core network equipment will send data to multiple nodes in the application layer group to which the first node belongs. When sent in an Ethernet data frame, the Ethernet packet information can indicate which node in the application layer group the data corresponding to each subheader in the Ethernet frame is sent to (ie the node information corresponding to the subheader), for example, Ethernet The network packet information can be in the sub-header information of the Ethernet frame, and one or more bits are used to indicate the application layer identification of the node corresponding to the sub-header. After the wireless access network device receives the Ethernet frame, it can be based on the Ethernet packet Information and the application layer identifier of the first node to determine the data to be sent to the first node, and then determine the air interface for sending data to the first node according to the correspondence between the application layer identifier of the first node and the C-RNTI, and transmit the data through the air interface And the corresponding subheader is sent to the first node. It can be understood that, for other nodes in the application layer group except the first node, the radio access network device can also send respective corresponding data to other nodes through this method, which will not be repeated here.

In particular, for the common Ethernet header in the Ethernet frame, the radio access network device can send it to multiple nodes in the application layer group to which the first node belongs, for example, the radio access network When the device broadcasts the multicast control channel (multicast control channel, MCCH) or single cell multicast control channel (single cell MCCH, SC-MCCH) configuration information, it carries the group identification of the application layer group to which the first node belongs, and then passes it MCCH or SC-MCCH sends the common Ethernet header in the Ethernet frame. After the nodes in the application layer group receive the common Ethernet header, they can combine the common Ethernet header, the subheader corresponding to the node, and the data corresponding to the subheader to the application layer for processing.

It should be noted that the Ethernet packet information in the above-mentioned Ethernet protocol layer parameters may not be included in the Ethernet protocol layer parameters, but included in the data, for example, may be included between the core network equipment and the wireless access network equipment. In the GTP-U header, after the wireless access network device receives the data containing the Ethernet packet information, it can delete the padding part according to the Ethernet padding information in the Ethernet packet information, and then send it to the first node Sending the Ethernet frame with the stuffed part deleted is not specifically limited in the embodiment of the present application.

Optionally, when the radio access network device is composed of a CU and a DU, after receiving the second message, the CU of the radio access network device may send the Ethernet protocol layer parameters included in the second message to the DU through the F1 interface Then, the DU optimizes the data transmission between the first node and the DU according to the Ethernet protocol layer parameters. For related description, please refer to the above step S402, which will not be repeated here.

Optionally, when the CU of the radio access network device is composed of a CU-CP and a CU-UP, the aforementioned actions performed by the CU are all performed by the CU-CP.

Based on the parameter transmission method provided by the embodiment of the present application, the first node sends a first message requesting the establishment or modification of the PDU session of the first node to the core network device, and the core network device sends the first message to the radio access network device after receiving the first message The second message for establishing or modifying the PDU session of the first node includes one or more sets of Ethernet protocol layer parameters, and the Ethernet protocol layer parameters include one or more of the following: data packet size, Data packet cycle, data packet arrival time, data packet survival time, receiving window, Ethernet type, and Ethernet packet information. The embodiment of the application transmits Ethernet protocol layer parameters to the wireless access network device during the establishment or modification of the PDU session, so that the wireless access network device can optimize the first node and the wireless access network device based on the Ethernet protocol layer parameters. Data transfer between.

Optionally, in the parameter transmission method shown in FIG. 4, when the second message includes a group of Ethernet protocol layer parameters corresponding to QFI, or the second message includes multiple groups of Ethernet protocol layer parameters, as shown in FIG. 5 As shown, the parameter transmission method provided in the embodiment of the present application further includes:

S403. The radio access network device sends a third message to the first node. Correspondingly, the first node receives the third message.

Wherein, the third message includes each group of Ethernet protocol layer parameters in the above one or more groups of Ethernet protocol layer parameters and the QFI corresponding to each group of Ethernet protocol layer parameters, and the QFI corresponding to each group of Ethernet protocol layer parameters It is used for the first node to determine the QFI corresponding to the uplink data according to the Ethernet protocol layer parameters of the uplink data.

Optionally, each group of Ethernet protocol layer parameters and the QFI corresponding to each group of Ethernet protocol layer parameters may be carried in the NAS message sent by the core network device to the first node. In this case, the third message is NAS message from the core network device. After receiving the NAS message sent by the core network device to the first node, the radio access network device can encapsulate the NAS message in an RRC reconfiguration message and forward it to the first node. At this time, The first node receiving the third message may be the first node receiving the third message from the core network device through the wireless access network device; or, each set of Ethernet protocol layer parameters and the QFI corresponding to each set of Ethernet protocol layer parameters may be After the wireless access network device receives one or more sets of Ethernet protocol layer parameters from the core network device, each set of Ethernet protocol layer parameters and each set of Ethernet protocol layer parameters in the one or more sets of Ethernet protocol layer parameters The network protocol layer parameters are encapsulated in a third message and sent to the first node. In this scenario, the first node receiving the third message may be the first node receiving the third message from the radio access network device, and the third message may Reconfiguration message for RRC.

Optionally, after receiving the third message, the first node may determine the QFI corresponding to the uplink data according to the QFI corresponding to the Ethernet protocol layer parameter of the generated uplink data. Exemplarily, after the first node generates the uplink data, it can determine a set of Ethernet protocol layer parameters according to the packet size of the uplink data, and the packet size included in the set of Ethernet protocol layer parameters and the data packet of the above data If the size is the same or similar, the QFI corresponding to the group of Ethernet protocol layers is determined as the QFI corresponding to the uplink data.

Based on this scheme, because the wireless access network device sends each group of Ethernet protocol layer parameters and the corresponding QFI to the first node, the first node can determine the corresponding uplink data according to the Ethernet protocol layer parameters of the uplink data it generates. QFI.

Optionally, when the wireless access network device is composed of CU and DU, after the CU of the wireless access network device receives a set of Ethernet protocol layer parameters corresponding to QFI or multiple sets of Ethernet protocol layer parameters, it can Each group of Ethernet protocol layer parameters in the one or more groups and the QFI corresponding to each group of Ethernet protocol layer parameters are sent to the DU through the F1 interface, and then sent by the DU to the first node.

Optionally, when the first node switches from the first radio access network device (the radio access network device 30 in the embodiment of this application) to the second radio access network device, the parameter transmission method provided in this embodiment of the application It may also include: the first radio access network device sends a handover request (handover request) message to the second radio access network device, where the handover request message includes the identifier of the first node, the PDU session identifier of the first node, and the PDU The Ethernet protocol layer parameter corresponding to the session identifier; or, the handover request message includes the identifier of the first node, the PDU session identifier of the first node, one or more QFIs, and each of the one or more QFIs corresponds to The Ethernet protocol layer parameters. Subsequently, the second wireless access network device may optimize the data transmission between the first node and the second wireless access network device according to the Ethernet protocol layer parameters received from the first wireless access network device.

Optionally, when the first node switches from the first radio access network device (the radio access network device 30 in the embodiment of this application) to the second radio access network device, the parameter transmission method provided in this embodiment of the application It may also include: the first radio access network device sends a handover required message to the core network device (for example, the MME in the LTE network, or the AMF in the NR network), and the handover required message includes the second handover request message on the core network management device side. A node ID, the first node ID on the first radio access network device side, the second radio access network device ID (or target cell ID), the handover type, the PDU session ID of the first node, and the PDU session of the first node correspond One or more of the one or more QFIs, the DRB identifier corresponding to each QFI in the one or more QFIs, and one or more sets of Ethernet protocol layer parameters. Wherein, the first radio access network device may include the PDU session identifier of the first node, one or more QFIs corresponding to the PDU session, one or more sets of Ethernet protocol layer parameters in the first radio access network device to the first node 2. In the message of the radio access network device (for example, Source to Target Transparent Container). After the core network device receives the handover request message from the first radio access network device, it sends a handover request (handover request) message to the second access network device. The handover request message includes the handover request message received from the first radio access network device. The above-mentioned information included in the received handover request message. Subsequently, the second radio access network device may also optimize the data transmission between the first node and the second radio access network device according to the received Ethernet protocol layer parameters.

Wherein, the actions of the first node, radio access network device, or core network device in the foregoing steps S401 to S403 may be executed by the processor 501 in the communication device 50 shown in FIG. 3 calling the application program code stored in the memory 503 This embodiment does not impose any restriction on this.

In another possible implementation manner, the parameter transmission method provided by the embodiment of the present application is applied to the communication system shown in FIG. 2b. The IIoT server has a data communication requirement between the second node and the first node, and the first node A scenario where an RRC connection is established with the radio access network device (for example, it can be an RRC connection established between the second node's relay and the radio access network device), and the first node has passed the core network authentication As shown in Figure 6, the parameter transmission method includes the following steps:

S601. The first node sends a first message to the core network device through the second node and the radio access network device. Correspondingly, the core network device receives the first message from the first node through the second node and the radio access network device.

Optionally, the first message may be a NAS message, such as a PDU session establishment request or a PDU session modification request message. The first node may include the first message in the RRC message, and send the first message using the RRC connection established between the relay of the second node and the radio access network device. After receiving the RRC message containing the first message from the first node, the radio access network device forwards the first message to the core network device.

Wherein, after the core network device receives the message for requesting the establishment or modification of the PDU session of the first node, it executes the following step S602 to establish or modify the core network device and the radio access network device corresponding to the PDU session of the first node For example, the S1 interface or the user plane tunnel of the NG3 interface corresponding to the PDU session of the first node, where the communication between the core network device corresponding to the PDU session of the first node and the radio access network device is modified The data transmission channel can be understood as modifying the QoS flow included in the data transmission channel or modifying the user plane tunnel address.

S602. The core network device sends a second message to the radio access network device. Correspondingly, the radio access network device receives the second message from the core network device.

Wherein, the second message is used to establish or modify the aforementioned PDU session. The second message includes one or more groups of Ethernet protocol layer parameters used to optimize the transmission of the data of the first node between the second node and the radio access network device, and the Ethernet protocol layer parameters include one of the following or Multiple items: data packet size, data packet period, data packet arrival time, data packet survival time, receiving window, Ethernet type, and Ethernet packet information.

Optionally, the second message may be a PDU session resource establishment or modification request message. The second message may include the identifier of the PDU session and the user plane tunnel address (for example, the tunnel endpoint identifier or IP address) of the core network device side corresponding to the PDU session. After receiving the second message, the radio access network device can send a reply message to the core network device. The reply message includes the user plane tunnel address on the radio access network device side. So far, the core network corresponding to the PDU session of the first node The user plane tunnel between the device and the radio access network device is successfully established or modified. Correspondingly, after the establishment or modification of the user plane tunnel corresponding to the PDU session of the first node is completed, the radio access network device can notify the second node to establish or modify the transmission channel between the second node and the radio access network device, and to establish Or modify the transmission channel between the second node and the first node, and the related process can refer to the prior art, which will not be repeated here. In addition, the second message also includes one or more QoS flows and corresponding cellular network QoS parameters, wherein each QoS flow is identified by a QFI.

Optionally, the Ethernet protocol layer parameters included in the second message may be PDU session granularity or QoS flow granularity. For related description, please refer to the above step S402, which will not be repeated here.

Optionally, after the wireless access network device receives the above one or more sets of Ethernet protocol layer parameters, it can optimize the data of the first node according to the received Ethernet protocol layer parameters in the second node and the wireless access network device The method for the wireless access network device to optimize the transmission of the data of the first node between the second node and the wireless access network device is similar to the optimization method in step S402. For related description, please refer to the above step S402. , I won’t repeat it here.

Wherein, because the second node acts as a relay to assist the signaling and data transmission between the first node and the radio access network device, the radio access network device executes the following step S603 to send relevant Ethernet protocol layer parameters to the second Node so that the second node optimizes the data transmission between the first node and the second node.

S603: The radio access network device sends the identifier of the first node, the first channel identifier, and the Ethernet protocol layer parameters corresponding to the first channel identifier to the second node. Correspondingly, the second node receives the identifier of the first node, the first channel identifier, and the Ethernet protocol layer parameters corresponding to the first channel identifier from the wireless access network device.

Wherein, the first channel identifier is used to indicate a channel between the first node and the second node. Optionally, the identifier of the first node may be one or more of the identifier assigned by the second node to the first node, the identifier of the first node in the side link, or the application layer identifier of the first node. Since the second node may be associated with multiple nodes, and each node may have the same channel identifier, the identifier of the first node may be used by the second node to uniquely determine the first channel identifier of the first node.

Optionally, when the first node requests an association from the second node, it may send the identification of the first node in the side link or the application layer identification of the first node to the second node. After the second node agrees to the first node to associate , The first node may be assigned an identifier, and a reply message may be sent to the first node, and the reply message may carry the identifier assigned by the second node to the first node. The first node sends an RRC connection establishment request to the radio access network device through the relay of the second node, and when the second node forwards the RRC connection establishment request to the radio access network device, it sends the identifier assigned by the second node to the first node For the radio access network device, the subsequent radio access network device and the second node identify the first node according to the identifier assigned by the second node to the first node; or, if the second node does not assign an identifier to the first node, the second node When the node forwards the RRC connection establishment request of the first node to the radio access network device, it sends the identification of the first node in the side link or the application layer identification of the first node to the radio access network device, and subsequent wireless access The network device and the second node identify the first node according to the identification of the first node in the side link or the application layer identification of the first node.

Optionally, when the type of the second node is a radio access network device, the first channel identifier may be a logical channel identifier (LC identifier, LC ID) or a data radio bearer identifier (DRB identifier, DRB ID); When the type of the node is a terminal device, the first channel identifier may be a logical channel identifier LC ID or a side link data radio bearer identifier SL DRB ID.

Optionally, after receiving the second message, the radio access network device may perform DRB mapping on the QoS flow identified by each of the one or more QFIs corresponding to the PDU session of the first node to determine one or more The first channel identifier is used to determine the corresponding relationship between the QFI and the first channel identifier. For detailed implementation, please refer to the prior art, which is not repeated here.

Optionally, after the wireless access network device determines the corresponding relationship between QFI and the first channel identifier, it may determine the corresponding relationship between the first channel identifier according to the corresponding relationship between the Ethernet protocol layer parameters and QFI and the corresponding relationship between QFI and the first channel identifier The Ethernet protocol layer parameters. In the case that the second message includes a set of Ethernet protocol layer parameters corresponding to the ID of the PDU session of the first node, each first channel in the first channel ID determined by the radio access network device after DRB mapping The Ethernet protocol layer parameters corresponding to the identifier are the Ethernet protocol layer parameters corresponding to the identifier of the PDU session; or, in the case that the second message includes a group of Ethernet protocol layer parameters corresponding to QFI, wireless access After the network device performs DRB mapping, only one first channel identifier is determined, and the Ethernet protocol layer parameter corresponding to the first channel identifier is the Ethernet protocol layer parameter corresponding to QFI.

Or, in the case that the second message includes multiple sets of Ethernet protocol layer parameters, the wireless access network device determines the first channel identifier according to the correspondence between the Ethernet protocol layer parameters and QFI, and the correspondence between QFI and the first channel identifier For the corresponding Ethernet protocol layer parameters, if a first channel identifier corresponds to a QFI, the Ethernet protocol layer parameter corresponding to the first channel identifier is the Ethernet protocol layer parameter corresponding to the one QFI; if a first channel If the identifier corresponds to multiple QFIs, the Ethernet protocol layer parameters corresponding to the first channel identifier include the Ethernet protocol layer parameters obtained by the wireless access network device integrating the Ethernet protocol layer parameters corresponding to the multiple QFIs.

Exemplarily, taking the second message received by the wireless access network device including four sets of Ethernet protocol layer parameters as an example, the content included in the four sets of Ethernet protocol layer parameters and their respective corresponding QFIs are shown in Table 2. The corresponding relationship between the QFI determined by the radio access network device and the first channel identifier is shown in Table 3. Among them, the first channel identifier 1 corresponds to QFI1 and QFI2, and the wireless access network device integrates the Ethernet protocol layer parameters corresponding to QFI1 and QFI2. The Ethernet protocol layer parameters corresponding to the first channel identifier 1 may be as follows: The Ethernet protocol layer parameters corresponding to channel ID 1 may include the first group of Ethernet protocol layer parameters corresponding to QFI1 or the second group of Ethernet protocol layer parameters corresponding to QFI2, for example, the first group of Ethernet protocol layer parameters corresponding to QFI1 Network protocol layer parameters: data packet size 1, data packet period 1, and receiving window 1; or, the Ethernet protocol layer parameters corresponding to the first channel identifier 1 may include the first group of Ethernet protocol layer parameters corresponding to QFI1 and corresponding to QFI2 The second set of Ethernet protocol layer parameters includes, for example, data packet size 1, data packet period 1, receiving window 1, data packet size 1, and data packet lifetime 1; or, the Ethernet protocol layer corresponding to the first channel identifier The parameters may include some of the first group of parameters corresponding to QFI1 and the second group of parameters corresponding to QFI2, for example, including data packet size 1, data packet period 1, and receiving window 1.

In addition, the Ethernet protocol layer parameters corresponding to the first channel identifier 2 determined by the wireless network device include the third group of Ethernet protocol layer parameters corresponding to QFI3: packet arrival time 1; the Ethernet protocol layer parameters corresponding to the first channel identifier 3 Including the fourth group of Ethernet protocol layer parameters corresponding to QFI4: packet cycle 2, Ethernet type 1. At this time, the content sent by the wireless access network device to the second node includes the identification of the first node, the first channel identification 1, and the Ethernet protocol layer parameters corresponding to the first channel identification 1, the first channel identification 2 and the first channel The Ethernet protocol layer parameters corresponding to the identifier 2, the first channel identifier 3, and the Ethernet protocol layer parameters corresponding to the first channel identifier 3.

Table 2

以太网协议层参数Ethernet protocol layer parameters	以太网协议层参数对应的QFIQFI corresponding to Ethernet protocol layer parameters
第一组：数据包大小1、数据包周期1、接收窗口1The first group: data packet size 1, data packet period 1, receiving window 1	QFI 1 QFI 1
第二组：数据包大小1、数据包生存时间1The second group: data packet size 1, data packet survival time 1	QFI 2 QFI 2
第三组：数据包到达时间1The third group: data packet arrival time 1	QFI 3QFI 3
第四组：数据包周期2、以太网类型1The fourth group: packet cycle 2, Ethernet type 1	QFI 4QFI 4

table 3

以太网协议层参数对应的QFIQFI corresponding to Ethernet protocol layer parameters	QFI对应的第一通道标识The first channel identification corresponding to QFI

QFI 1QFI 1	11
QFI 2 QFI 2	11
QFI 3QFI 3	22
QFI 4QFI 4	33

Optionally, the radio access network device may send the identity of the first node, the first channel identity, and the Ethernet protocol layer parameters corresponding to the first channel identity to the second node through the RRC reconfiguration message, or may send it through other messages The embodiments of this application do not specifically limit this.

Optionally, after receiving the identifier of the first node, the first channel identifier, and the Ethernet protocol layer parameters corresponding to the first channel identifier from the wireless access network device, the second node may use the Ethernet protocol layer parameters corresponding to the first channel identifier. The network protocol layer parameters optimize the data transmission between the first node and the second node. Exemplarily, the second node may determine the size of the Ethernet padding part corresponding to the first channel identifier according to the Ethernet packet information corresponding to the first channel identifier, and subsequently send the first channel to the first node through the first channel indicated by the first channel identifier. When sending a data packet, the Ethernet padding part can be deleted before sending the data packet; or, as an example, the second node can also compare the parameters between the first node and the second node according to the Ethernet protocol layer parameters corresponding to the first channel identifier. Other optimizations are performed for the data transmission between the first node and the second node by the second node. The method for optimizing the data transmission between the first node and the second node is similar to that between the radio access network device and the first node and the radio access network device in step S402. The method of optimizing data transmission between.

It should be noted that if the size of the Ethernet padding part of each data packet is different, the core network device can carry the Ethernet padding information of the data packet in the header of the data packet sent to the wireless access network device, for example, in S1 Or carried in the GTP-U of the NG interface. After receiving the data packet carrying the Ethernet filling information, the wireless access network device can carry the Ethernet filling information in the PDCP header of the data packet sent to the second node. After the node receives the data packet carrying the Ethernet padding information, it can delete the padding part of the data packet according to the Ethernet padding information, and then send the data packet to the first node.

Optionally, when the radio access network device is composed of a CU and a DU, after receiving the second message, the CU of the radio access network device can establish the corresponding relationship between the QFI and the first channel identifier, and determine each first channel Identify the corresponding Ethernet protocol layer parameters, and then combine the identification of the first node, the one or more QFIs corresponding to the PDU of the first node, the first channel identification corresponding to each QFI of the one or more QFIs, and each The Ethernet protocol layer parameters corresponding to the first channel identifier are sent to the DU, and the DU sends the identifier of the first node, each first channel identifier, and the Ethernet protocol layer parameters corresponding to each first channel identifier to the second Node; or, the CU may also send one or more QFIs corresponding to the PDU of the first node, the first channel identifier corresponding to each QFI of the one or more QFIs, and one or more sets of Ethernet protocol layer parameters To the DU, the DU determines the Ethernet protocol layer parameters corresponding to the first channel identifier, and then sends the first node identifier, each first channel identifier, and the Ethernet protocol layer parameters corresponding to each first channel identifier to the first node Two nodes. In addition, the CU may also send one or more sets of Ethernet protocol layer parameters included in the second message to the DU, so that the DU optimizes the transmission of the data of the first node between the second node and the DU. For related description, please refer to the above step S402. , I won’t repeat it here.

Optionally, in another possible implementation manner, the content sent by the radio access network device to the second node in step S603 may include: the identifier of the first node, one or more corresponding to the PDU session of the first node QFI, the first channel identifier corresponding to each QFI of the one or more QFIs, and the Ethernet protocol layer parameters corresponding to each QFI of the one or more QFIs. Subsequently, the second node determines the Ethernet protocol layer parameters corresponding to the first channel identifier in order to optimize the data transmission between the first node and the second node; or, the subsequent data generated by the second node needs to be sent to the first node At this time, the second node can determine the QFI corresponding to the data according to the Ethernet protocol layer parameters corresponding to each QFI in one or more QFIs and the Ethernet protocol layer parameters of the data, and pass the QFI in one or more QFIs The first channel identifier corresponding to each QFI and the QFI corresponding to the data determine the first channel for sending the data to the first node. In addition, the content sent by the radio access network device to the second node may also include the cellular network QoS parameters corresponding to each of the one or more QFIs corresponding to the PDU session of the first node. At this time, if the Ethernet protocol is used Layer parameters are understood as IIoT QoS parameters, that is, it can be considered that the radio access network device sends the mapping relationship between the IIoT QoS parameters corresponding to the QFI and the cellular network QoS parameters to the second node.

Or, optionally, in another possible implementation manner, if an RRC connection is established between the first node and the second node, the content sent by the radio access network device to the second node in step S603 may include: The identifier of a node, one or more QFIs corresponding to the PDU session of the first node, the Ethernet protocol layer parameters corresponding to each QFI of the one or more QFIs, and each QFI of the one or more QFIs Corresponding cellular network QoS parameters. After receiving the content, the second node may perform DRB mapping on each QFI of the one or more QFIs, that is, determine the corresponding relationship between each QFI and the first channel identifier, and send the corresponding relationship to the first node. In addition, the second node also sends the cellular network QoS parameter corresponding to each QFI of the one or more QFIs to the first node.

Based on the parameter transmission method provided by the embodiment of the present application, the first node sends a first message requesting the establishment or modification of the PDU session of the first node to the core network device, and the core network device sends the first message to the radio access network device after receiving the first message The second message for establishing or modifying the PDU session of the first node. The second message includes one or more sets of Ethernet protocol layer parameters. After receiving the second message, the radio access network device sends to the second node the identifier of the first node, the first channel identifier, and the Ethernet protocol layer parameters corresponding to the first channel identifier, where the second message includes a group of Ethernet protocol layer parameters, the Ethernet protocol layer parameters corresponding to the first channel identifier include the set of Ethernet protocol layer parameters, or, when the second message includes multiple sets of Ethernet protocol layer parameters, the first channel The Ethernet protocol layer parameters corresponding to the identifier include some or all of the multiple sets of Ethernet protocol layer parameters. The above-mentioned Ethernet protocol layer parameters include one or more of the following: data packet size, data packet period, data packet arrival time, data packet survival time, receiving window, Ethernet type, and Ethernet packet information. Compared with the prior art, on the one hand, the embodiments of the present application transmit Ethernet protocol layer parameters to the wireless access network device during the establishment or modification of the PDU session, so that the wireless access network device can be optimized based on the Ethernet protocol layer parameters. The data of the first node is transmitted between the second node and the wireless access network device; on the other hand, because the wireless access network device sends Ethernet protocol layer parameters to the second node, the second node can also be based on Ethernet The network protocol layer parameters optimize the data transmission between the first node and the second node.

Optionally, in the parameter transmission method shown in FIG. 6, the radio access network device may also send a second channel identifier corresponding to the first channel identifier to the second node, where the second channel identifier is used to indicate the second node For a channel with a radio access network device, the second channel identifier may be a logical channel identifier LC ID or a data radio bearer identifier DRB ID.

Optionally, when the radio access network device is composed of a CU and a DU, the CU of the radio access network device may also establish a corresponding relationship between the first channel identifier and the second channel identifier, and then assign the second channel identifier corresponding to the first channel identifier. The channel identifier is sent to the DU. Wherein, the CU may send the second channel identifier corresponding to the first channel identifier together with the content sent by the CU to the DU in step S603; or, it may also separately send the second channel identifier corresponding to the first channel identifier to the DU. At this time, the content sent by the CU to the DU also includes the identity of the first node.

Optionally, the second channel identifiers corresponding to different first channel identifiers may be the same, for example, the first channel identifier 1 and the first channel identifier 2 both correspond to the second channel identifier 1; or the first channel identifiers corresponding to the different first channel identifiers The two channel identifiers may also be different. For example, the first channel identifier 1 corresponds to the second channel identifier 1, and the first channel identifier 2 corresponds to the second channel identifier 2, which is not specifically limited in the embodiment of the present application.

Optionally, the radio access network device may send the second channel identifier corresponding to the first channel identifier together with the content sent to the second node in step S603. At this time, the radio access network device sends the second node to the second node. The content includes: the identification of the first node, the first channel identification, the Ethernet protocol layer parameters corresponding to the first channel identification, and the second channel identification corresponding to the first channel identification; or, the wireless access network device can also send the first channel separately A second channel identifier corresponding to a channel identifier. At this time, the radio access network device also needs to send the identifier of the first node to the second node, so that the second node can determine the first channel identifier that uniquely determines the first node.

Based on this solution, since the radio access network device sends the second channel identifier corresponding to the first channel identifier to the second node, it can make the second node receive the uplink data of the first node from the second channel, according to the first channel The second channel identifier corresponding to the identifier determines the second channel for sending the uplink data to the radio access network device.

Optionally, in the parameter transmission method shown in FIG. 6, when the second message includes a set of Ethernet protocol layer parameters corresponding to QFI, or the second message includes multiple sets of Ethernet protocol layer parameters, as shown in FIG. As shown, the parameter transmission method provided in the embodiment of the present application further includes:

S604. The radio access network device sends a third message to the first node. Correspondingly, the first node receives the third message.

Wherein, the third message includes each group of Ethernet protocol layer parameters in the above one or more groups of Ethernet protocol layer parameters and the QFI corresponding to each group of Ethernet protocol layer parameters, and the QFI corresponding to each group of Ethernet protocol layer parameters is used The first node determines the QFI corresponding to the uplink data according to the Ethernet protocol layer parameters of the uplink data.

Optionally, each group of Ethernet protocol layer parameters and the QFI corresponding to each group of Ethernet protocol layer parameters may be carried in the NAS message sent by the core network device to the first node. In this case, the third message is The NAS message from the core network device. After receiving the NAS message sent by the core network device to the first node, the radio access network device can encapsulate the NAS message in an RRC reconfiguration message and forward it to the second node, and then the first node The two nodes send to the first node. At this time, the first node to receive the third message may mean that the first node receives the third message from the core network device through the second node and the radio access network device; or, each group of Ethernets mentioned above The protocol layer parameters and the QFI corresponding to each set of Ethernet protocol layer parameters can be that after the wireless access network device receives one or more sets of Ethernet protocol layer parameters from the core network device, the one or more sets of Ethernet protocol Each group of Ethernet protocol layer parameters and each group of Ethernet protocol layer parameters in the layer parameters are encapsulated in a third message and sent to the first node through the second node. In this scenario, the first node may receive the third message as The first node receives the third message from the radio access network device through the second node, and the third message may be an RRC reconfiguration message.

Optionally, after the first node receives the third message, it can determine the QFI corresponding to the uplink data according to the QFI corresponding to the Ethernet protocol layer parameters of the uplink data it generates. For related description, please refer to the above step S403. Repeat it again.

Based on this scheme, the core network device sends each group of Ethernet protocol layer parameters and the QFI corresponding to each group of Ethernet protocol layer parameters to the first node, so that the first node can be based on the Ethernet protocol layer of the uplink data generated by it. The parameter determines the QFI corresponding to the uplink data. Wherein, the actions of the first node, the second node, the radio access network device, or the core network device in the above steps S601 to S604 may be called by the processor 501 in the communication device 50 shown in FIG. 3 to call the application stored in the memory 503 The program code is executed, and this embodiment does not impose any restriction on this.

In another possible implementation manner, the parameter transmission method provided in the embodiment of the present application is applied to the communication system shown in FIG. 2c. As shown in FIG. 8, the parameter transmission method includes the following steps:

S801: The first protocol layer entity of the first node obtains Ethernet protocol layer parameters.

Among them, the Ethernet protocol layer parameters include one or more of the following: data packet size, data packet period, data packet arrival time, data packet survival time, receiving window, Ethernet type, and Ethernet packet information. The Ethernet protocol layer parameters are used to optimize the data transmission between the first node and the second node. For the meaning of each of the above items, refer to the related description in the above step S401, which will not be repeated here.

Optionally, the first protocol layer entity may be an application layer entity or an Ethernet protocol layer entity.

S802. The first protocol layer entity of the first node sends Ethernet protocol layer parameters to the second protocol layer entity of the first node.

Optionally, after the first protocol layer entity of the first node obtains the Ethernet protocol layer parameters, the obtained Ethernet protocol layer parameters may be sent to the second protocol layer entity of the first node so that the second protocol layer entity Optimize the data transmission between the first node and the second node.

Optionally, the second protocol layer entity may be a radio link control (RLC) layer entity, a media access control (media access control, MAC) layer entity, or a physical (physics, PHY) layer entity. One or more.

Optionally, after receiving the Ethernet protocol layer parameters, the second protocol layer entity of the first node may perform transmission optimization according to the Ethernet protocol layer parameters. Exemplarily, when the second protocol layer entity is a MAC layer entity, the MAC layer entity of the first node may generate a corresponding scheduling policy according to the data packet size and the data packet cycle, for example, configure the semi-static scheduling SPS mode for the second node, Or, for example, the MAC layer entity of the first node may prepare corresponding transmission resources according to the size of the data packet.

Or, for example, when the second protocol layer entity is an RLC layer entity, the RLC layer entity of the first node may segment the data according to the ethernet padding information in the Ethernet packet information, for example, the Ethernet The net frame is divided into a part containing data and a part containing padding, and the part containing padding is deleted before sending the Ethernet frame to the second node. The RLC layer entity of the first node may also determine the transmission block size (TBS) of the data packet to be sent according to the size of the data packet, and send the TBS of the data packet to be sent to the MAC layer entity of the first node, So that the MAC layer entity of the first node prepares corresponding transmission resources.

Based on this solution, since the first protocol layer entity of the first node can send Ethernet protocol layer parameters to the second protocol layer entity of the first node, the second protocol layer entity of the first node can directly use the Ethernet protocol layer Parameters are optimized. Therefore, on the one hand, the parameter transmission method provided by the embodiments of the present application can transmit Ethernet protocol layer parameters between different protocol layers in a node; on the other hand, compared to the prior art, the MAC layer entity of the first node According to channel conditions, the number of resource blocks, etc., determine the TBS of the data packet to be sent to prepare the corresponding transmission resources, and the MAC layer entity informs the RLC layer entity of the TBS of the data packet to be sent, so that the RLC layer entity performs the process of grouping packets according to the TBS. The parameter transmission method provided in the embodiment of the present application can reduce the complexity of the first node transmission optimization.

Optionally, the parameter transmission method shown in FIG. 8 may further include: the first node obtains the subnet topology information of the second node, where the subnet of the second node indicates that the second node is connected to other IOT devices In case, the subnet topology information is used by the first protocol layer entity of the first node to determine the format of the data sent to the second protocol layer entity of the first node.

Optionally, the first node acquiring the subnet topology information of the second node may be: the first node receives the subnet topology information from the second node. Based on this, as shown in FIG. 9, the parameter transmission method shown in FIG. 8 may further include:

S803. The second node sends the subnet topology information to the first node. Correspondingly, the first node receives the subnet topology information from the second node.

Wherein, the subnet topology information can indicate whether the second node carries a subnet. For example, a value of 1 for the bit carrying the subnet topology information indicates that the second node carries the subnet, that is, the second node is connected to other IOT devices, and A value of 0 means that the second node does not carry a subnet, that is, the second node is not connected to other IOT devices; or, the subnet topology information can also indicate the topology of the subnet carried by the second node, for example, indicate the topology of the subnet It is a star, line, or ring; or, the subnet topology information may also indicate that the subnet carried by the second node is a wired subnet or a wireless subnet. It is understandable that the subnet topology information may also indicate other information of the subnet carried by the second node, which is not specifically limited in the embodiment of the present application.

Optionally, before step S803, the parameter transmission method provided in the embodiment of the present application may further include: the first node sends a request message to the second node to request the second node to report its subnet topology information. After receiving the request message from the first node, the second node sends the subnet topology information to the first node; alternatively, the second node may also report its subnet topology information to the first node periodically, in this embodiment of the application There is no specific restriction on this.

Optionally, after the first node obtains the subnet topology information of the second node, it can perform transmission optimization according to the subnet topology information, for example, determine the first protocol layer of the first node according to the subnet topology information of the second node The format of the data sent by the entity to the second protocol layer entity of the first node. Exemplarily, for a service whose Ethernet type is EtherCAT, if the subnet topology information indicates that the subnet structure carried by the second node is a ring structure, the first protocol layer entity of the first node may The user's data is combined into an EtherCAT data packet and sent to the second protocol layer entity of the first node.

Optionally, the first node may also determine the manner of sending data to nodes in the subnet carried by the second node according to the subnet topology information of the second node, for example, if the subnet topology information indicates the subnet structure carried by the second node In a star structure, the first node sends the data contained in the EtherCAT packet header through MCCH or SC-MCCH multicast, and the data of different nodes contained in the EtherCAT packet through a dedicated control channel (Dedicated Control Channel, DCCH )send separately. In addition, when the first node is connected to multiple second nodes, and the first node and multiple second nodes communicate via EtherCAT, the first node can also send the data contained in the EtherCAT packet header via MCCH or SC-MCCH multicast , And the data of different nodes contained in the EtherCAT packet are sent separately through the DCCH.

Based on the above solution, for local termination services, that is, service data is only transmitted between the first node and the second node, and does not need to reach the core network services, the first node can optimize the first node's network topology information based on the second node's subnet topology information The data transmission between the first protocol layer and the second protocol layer or the data transmission between the first node and the second node can improve the optimization performance of the first node.

It should be noted that there is no strict sequence between step S803 and step S801. Step S801 can be performed first, and then step S803; or, step S803 can be performed first, and then step S801; or, step S801 and step S801 can be performed simultaneously. Step S803, this embodiment of the application does not specifically limit this.

Optionally, the parameter transmission method shown in FIG. 8 or FIG. 9 may further include: the first node obtains the first protocol layer identifier of the second node.

Optionally, the first node acquiring the first protocol layer identifier of the second node may be: the first node receives the first protocol layer identifier of the second node from the second node. Based on this, as shown in FIG. 10, the parameter transmission method shown in FIG. 8 or FIG. 9 may further include:

S804: The second node sends the first protocol layer identifier of the second node to the first node. Correspondingly, the first node receives the first protocol layer identifier of the second node.

Optionally, before step S804, the parameter transmission method provided in the embodiment of the present application may further include: the first node sends a request message to the second node, requesting the second node to report its first protocol layer identifier. After receiving the request message, the second node sends its first protocol layer identifier to the first node; alternatively, the second node may report its first protocol layer identifier to the first node when requesting association from the second node. This application The embodiment does not specifically limit this.

Optionally, after the first node receives the first protocol layer identifier of the second node, if the first node is deployed in the radio access network device, the first node determines and saves the first protocol layer identifier of the second node and The corresponding relationship between the Uu port identifier (ie C-RNTI); if the first node is deployed in the terminal device, the first node determines and saves the first protocol layer identifier of the second node and the side link SL port identifier (ie, near Field communication user equipment identifier (Proximity service enable user equipment identifier, ProSe UE ID)). Subsequently, when the first node sends data to the second node, the first protocol layer of the first node can notify the first node to which node the data corresponding to each subheader in the second protocol layer Ethernet frame should be sent, so that the first The second protocol layer of the node determines the data sent to the second node. At the same time, the first node can determine the corresponding relationship between the first protocol layer identifier of the second node and the interface identifier (Uu port identifier or SL port identifier), and the second The first protocol layer identifier of the node determines the interface identifier for sending data to the second node, so that the data is sent to the second node through the interface indicated by the interface identifier. Exemplarily, taking the first node deployed in the radio access network device, the first protocol layer identifier of the second node is the first protocol layer identifier 1, as an example, the first protocol layer identifier of the second node saved by the first node The corresponding relationship with the Uu port identifier can be: the first protocol layer identifier 1: C-RNTI 1; after the second protocol layer in the subsequent section 1 determines the data sent to the second node, the corresponding relationship can determine the second node The interface identifier for the node sending data is C-RNTI 1, and the data is sent to the second node through the interface indicated by C-RNTI 1. It should be noted that in the scenario of locally terminating services, if the second node carries a wired subnet, the second node needs to fill in the Ethernet frame to 64 bytes after receiving the data from the first node, and then add The data packet is sent to other nodes in the subnet.

Based on the above solution, for the local termination service, the first node can also optimize the data transmission between the first node and the second node according to the first protocol layer identifier of the second node, thereby improving the optimization performance of the first node.

It should be noted that there is no strict sequence between step S804 and step S801. Step S801 can be performed first, and then step S804; alternatively, step S804 can be performed first, and then step S801; or, step S801 and step S801 can be performed simultaneously. Step S804, this embodiment of the application does not specifically limit this.

Wherein, the actions of the first node or the second node in the above steps S801 to S804 may be executed by the processor 501 in the communication device 50 shown in FIG. 3 calling the application program code stored in the memory 503, and this embodiment There are no restrictions.

It can be understood that, in the above embodiments, the methods and/or steps implemented by the first node can also be implemented by components (such as chips or circuits) that can be used in the first node, and methods implemented by wireless access network equipment And/or steps can also be implemented by components (such as chips or circuits) that can be used in wireless access network devices, and methods and/or steps implemented by core network devices can also be implemented by components (such as chips) that can be used in core network devices. Or circuit) implementation.

The foregoing mainly introduces the solution provided by the embodiment of the present application from the perspective of interaction between various network elements. Correspondingly, an embodiment of the present application also provides a communication device, which is used to implement the foregoing various methods. The communication device may be the first node in the foregoing method embodiment, or a device including the foregoing first node, or a component that can be used for the first node; or, the communication device may be the wireless access in the foregoing method embodiment Network equipment, or a device including the above-mentioned wireless access network equipment, or a component that can be used in an access network; or, the communication device may be the core network equipment in the foregoing method embodiment, or a device including the above-mentioned core network equipment, Or a component that can be used in core network equipment. It can be understood that, in order to realize the above-mentioned functions, the communication device includes hardware structures and/or software modules corresponding to each function. Those skilled in the art should easily realize that in combination with the units and algorithm steps of the examples described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

The embodiments of the present application may divide the communication device into functional modules according to the foregoing method embodiments. 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 above-mentioned integrated modules can be implemented in the form of hardware or software functional modules. It should be noted that the division of modules in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.

For example, take the communication device as the wireless access network device in the foregoing method embodiment as an example. FIG. 11 shows a schematic structural diagram of a wireless access network device 110. The wireless access network device 110 includes a receiving module 1101 and a sending module 1102. The receiving module 1101 may also be called a receiving unit to implement a receiving function, for example, it may be a receiving circuit, a receiver, a receiver or a communication interface; the sending module 1102 may also be called a sending unit to implement a sending function, For example, it can be a transmitting circuit, a transmitter, a transmitter, or a communication interface.

In a possible implementation manner, the receiving module 1101 is configured to receive a first message from the first node, and the first message is used to request the core network device to establish or modify the PDU session of the first node. The sending module 1102 is configured to send the first message to the core network device. The receiving module 1101 is further configured to receive a second message from the core network device. The second message is used to establish or modify the PDU session. The second message includes one or more sets of Ethernet protocol layer parameters. The network protocol layer parameters include one or more of the following: data packet size, data packet period, data packet arrival time, data packet survival time, receiving window, Ethernet type, and Ethernet packet information. Wherein, the Ethernet protocol layer parameter is used to optimize the data transmission between the first node and the radio access network device.

Optionally, the sending module 1102 is further configured to send the identifier of the first node, the first channel identifier, and the Ethernet protocol layer parameters corresponding to the first channel identifier to the second node, where the first channel identifier is used to indicate A channel between the first node and the second node, the Ethernet protocol layer parameter corresponding to the first channel identifier includes the set of Ethernet protocol layer parameters, or the Ethernet protocol corresponding to the first channel identifier The layer parameters include some or all of the multiple sets of Ethernet protocol layer parameters, and the first node is connected to the radio access network device through the second node.

Optionally, the sending module 1102 is further configured to send a second channel identifier corresponding to the first channel identifier to the second node, where the second channel identifier is used to indicate the communication between the second node and the radio access network device Of one channel.

Among them, all relevant content of each step involved in the above method embodiment can be cited in the function description of the corresponding function module, and will not be repeated here.

In this embodiment, the radio access network device 110 is presented in the form of dividing various functional modules in an integrated manner. The "module" here can refer to a specific ASIC, circuit, processor and memory that executes one or more software or firmware programs, integrated logic circuit, and/or other devices that can provide the above-mentioned functions. In a simple embodiment, those skilled in the art can imagine that the wireless access network device 110 may adopt the form of the communication device 50 shown in FIG. 3.

For example, the processor 501 in the communication device 50 shown in FIG. 3 may invoke the computer execution instructions stored in the memory 503 to make the wireless access network device 110 execute the parameter transmission method in the foregoing method embodiment.

Specifically, the function/implementation process of the receiving module 1101 and the sending module 1102 in FIG. 11 can be implemented by the processor 501 in the communication device 50 shown in FIG. 3 calling a computer execution instruction stored in the memory 503. Alternatively, the functions/implementation process of the receiving module 1101 and the sending module 1102 in FIG. 11 may be implemented through the communication interface 504 in the communication device 50 shown in FIG. 3.

Since the radio access network device 110 provided in this embodiment can perform the above-mentioned parameter transmission method, the technical effects that can be obtained can refer to the above-mentioned method embodiment, which will not be repeated here.

Or, take the communication device as the core network device in the foregoing method embodiment as an example. FIG. 12 shows a schematic structural diagram of a core network device 120. The core network device 120 includes a receiving module 1201 and a sending module 1202. The receiving module 1201 may also be called a receiving unit to realize the receiving function, for example, it may be a receiving circuit, a receiver, a receiver or a communication interface; the sending module 1202 may also be called a sending unit to realize the sending function, For example, it can be a transmitting circuit, a transmitter, a transmitter, or a communication interface.

In a possible implementation manner, the receiving module 1201 is configured to receive a first message from a first node, and the first message is used to request the core network device to establish or modify the PDU session of the first node. The sending module 1202 is configured to send a second message to the wireless access network device. The second message is used to establish or modify the PDU session. The second message includes one or more sets of Ethernet protocol layer parameters. The layer parameters include one or more of the following: data packet size, data packet period, data packet arrival time, data packet survival time, receiving window, Ethernet type, and Ethernet packet information. Wherein, the Ethernet protocol layer parameters are used to optimize data transmission between the first node and the wireless access network device.

Optionally, the sending module 1202 is further configured to send multiple groups or each group of Ethernet protocol layer parameters in a group corresponding to QFI and the QFI corresponding to each group of Ethernet protocol layer parameters to the first node. The QFI corresponding to the group Ethernet protocol layer parameter is used by the first node to determine the QFI corresponding to the uplink data according to the Ethernet protocol layer parameter of the uplink data.

In this embodiment, the core network device 120 is presented in the form of dividing various functional modules in an integrated manner. The "module" here can refer to a specific ASIC, circuit, processor and memory that executes one or more software or firmware programs, integrated logic circuit, and/or other devices that can provide the above-mentioned functions. In a simple embodiment, those skilled in the art can imagine that the core network device 120 may take the form of the communication device 50 shown in FIG. 3.

For example, the processor 501 in the communication device 50 shown in FIG. 3 may invoke the computer execution instructions stored in the memory 503 to enable the core network device 120 to execute the parameter transmission method in the foregoing method embodiment.

Specifically, the function/implementation process of the receiving module 1201 and the sending module 1202 in FIG. 12 may be implemented by the processor 501 in the communication device 50 shown in FIG. 3 calling the computer execution instructions stored in the memory 503. Alternatively, the functions/implementation process of the receiving module 1201 and the sending module 1202 in FIG. 12 may be implemented through the communication interface 504 in the communication device 50 shown in FIG. 3.

Since the core network device 120 provided in this embodiment can execute the above-mentioned parameter transmission method, the technical effects that can be obtained can refer to the above-mentioned method embodiment, and will not be repeated here.

Or, take the communication device as the first node in the foregoing method embodiment as an example. FIG. 13 shows a schematic structural diagram of a first node 130. The first node 130 includes a receiving module 1301 and a sending module 1302. The receiving module 1301 may also be called a receiving unit to realize the receiving function, for example, it may be a receiving circuit, a receiver, a receiver or a communication interface; the sending module 1302 may also be called a sending unit to realize the sending function, For example, it can be a transmitting circuit, a transmitter, a transmitter, or a communication interface.

In a possible implementation manner, the sending module 1302 is configured to send a first message to the core network device, where the first message is used to request the core network device to establish or request a PDU session of the first node. The receiving module 1301 is used to receive multiple groups or a group of Ethernet protocol layer parameters corresponding to QFI from the core network device for each group of Ethernet protocol layer parameters and the QFI corresponding to each group of Ethernet protocol layer parameters. The QFI corresponding to the group Ethernet protocol layer parameters is used by the communication device to determine the QFI corresponding to the uplink data according to the Ethernet protocol layer parameters of the uplink data. The Ethernet protocol layer parameters include one or more of the following: data packet size, data Packet cycle, data packet arrival time, data packet lifetime, receiving window, Ethernet type, and Ethernet packet information.

In this embodiment, the first node 130 is presented in the form of dividing various functional modules in an integrated manner. The "module" here can refer to a specific ASIC, circuit, processor and memory that executes one or more software or firmware programs, integrated logic circuit, and/or other devices that can provide the above-mentioned functions. In a simple embodiment, those skilled in the art can imagine that the first node 130 may take the form of the communication device 50 shown in FIG. 3.

For example, the processor 501 in the communication device 50 shown in FIG. 3 may invoke the computer execution instruction stored in the memory 503, so that the first node 130 executes the parameter transmission method in the foregoing method embodiment.

Specifically, the function/implementation process of the receiving module 1301 and the sending module 1302 in FIG. 13 can be implemented by the processor 501 in the communication device 50 shown in FIG. 3 calling the computer execution instructions stored in the memory 503. Alternatively, the functions/implementation process of the receiving module 1301 and the sending module 1302 in FIG. 13 may be implemented through the communication interface 504 in the communication device 50 shown in FIG. 3.

Since the first node 130 provided in this embodiment can execute the above-mentioned parameter transmission method, the technical effect that can be obtained can refer to the above-mentioned method embodiment, which will not be repeated here.

Or, take the communication device as the first node in the foregoing method embodiment as an example. FIG. 14 shows a schematic structural diagram of another first node 140. The first node 140 includes a processing module 1401 and a transceiver module 1402. The transceiver module 1402 may also be called a transceiver unit to implement sending and/or receiving functions, for example, it may be a transceiver circuit, transceiver, transceiver or communication interface.

In a possible implementation manner, the processing module 1401 is used for the first protocol layer entity of the first node to obtain Ethernet protocol layer parameters. The transceiver module 1402 is used for the first protocol layer entity of the first node to send the Ethernet protocol layer parameters to the second protocol layer entity of the first node, and the Ethernet protocol layer parameters include one or more of the following: data packet size , Data packet cycle, data packet arrival time, data packet survival time, receiving window, Ethernet type, and Ethernet packet information, the Ethernet protocol layer parameters are used to optimize the data transmission between the first node and the second node .

Optionally, the processing module 1401 is further configured to obtain subnet topology information of the second node, where the subnet topology information is used by the first protocol layer entity of the first node to determine the second protocol layer of the first node The format of the data sent by the entity.

Optionally, the processing module 1401 is further configured to send a request message to the second node through the transceiver module 1402 to request the second node to report its subnet topology information.

Optionally, the processing module 1401 is further configured to obtain subnet topology information of the second node, and includes: a processing module 1401, configured to receive the subnet topology information from the second node through the transceiver module 1402. Optionally, the processing module 1401 is further configured to obtain the first protocol layer identifier of the second node, where the first protocol layer identifier of the second node is used to determine the interface identifier corresponding to the data sent to the second node.

Optionally, the processing module 1401 is further configured to send a request message to the second node through the transceiver module 1402 to request the second node to report its first protocol layer identifier.

Optionally, the processing module 1401 is further configured to obtain the first protocol layer identifier of the second node, and includes: a processing module 1401 configured to receive the first protocol layer identifier from the second node through the transceiver module 1402.

In this embodiment, the first node 140 is presented in the form of dividing various functional modules in an integrated manner. The "module" here can refer to a specific ASIC, circuit, processor and memory that executes one or more software or firmware programs, integrated logic circuit, and/or other devices that can provide the above-mentioned functions. In a simple embodiment, those skilled in the art can imagine that the first node 140 may take the form of the communication device 50 shown in FIG. 3.

For example, the processor 501 in the communication device 50 shown in FIG. 3 may invoke the computer execution instructions stored in the memory 503, so that the first node 140 executes the data transmission method in the foregoing method embodiment.

Specifically, the functions/implementation process of the processing module 1401 and the transceiver module 1402 in FIG. 14 may be implemented by the processor 501 in the communication device 50 shown in FIG. 3 calling a computer execution instruction stored in the memory 503. Alternatively, the function/implementation process of the processing module 1401 in FIG. 14 can be implemented by the processor 501 in the communication device 50 shown in FIG. 3 calling a computer execution instruction stored in the memory 503, /The realization process can be realized through the communication interface 504 in the communication device 50 shown in FIG. 3.

Since the first node 140 provided in this embodiment can execute the above-mentioned parameter transmission method, the technical effects that can be obtained can refer to the above-mentioned method embodiment, and will not be repeated here.

Optionally, an embodiment of the present application further provides a communication device (for example, the communication device may be a chip or a chip system), and the communication device includes a processor for implementing the method in any of the foregoing method embodiments. In a possible design, the communication device further includes a memory. The memory is used to store necessary program instructions and data, and the processor can call the program code stored in the memory to instruct the communication device to execute the method in any of the foregoing method embodiments. Of course, the memory may not be in the communication device. When the communication device is a chip system, it may be composed of a chip, or may include a chip and other discrete devices, which is not specifically limited in the embodiment of the present application.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using a software program, it can be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center. Transmission to another website, computer, server or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or includes one or more data storage devices such as servers, data centers, etc. that can be integrated with the medium. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)). In the embodiment of the present application, the computer may include the aforementioned device.

Although the present application is described with reference to various embodiments, in the process of implementing the claimed application, those skilled in the art can understand and understand by viewing the drawings, the disclosure, and the appended claims. Implement other changes of the disclosed embodiment. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "one" does not exclude multiple. A single processor or other unit may implement several functions listed in the claims. Certain measures are described in mutually different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

Although the application has been described in combination with specific features and embodiments, it is obvious that various modifications and combinations can be made without departing from the spirit and scope of the application. Accordingly, this specification and drawings are merely exemplary descriptions of the application defined by the appended claims, and are deemed to have covered any and all modifications, changes, combinations or equivalents within the scope of the application. Obviously, those skilled in the art can make various changes and modifications to the application without departing from the spirit and scope of the application. In this way, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application is also intended to include these modifications and variations.

Claims

A parameter transmission method, characterized in that the method includes:

The radio access network device receives a first message from the first node, where the first message is used to request the core network device to establish or modify a protocol data unit PDU session of the first node;

Sending, by the radio access network device, the first message to the core network device;

The radio access network device receives a second message from the core network device, the second message is used to establish or modify the PDU session, and the second message includes one or more sets of Ethernet protocol layer parameters The Ethernet protocol layer parameters include one or more of the following: data packet size, data packet period, data packet arrival time, data packet survival time, receiving window, Ethernet type, and Ethernet packet information; The network protocol layer parameters are used to optimize data transmission between the first node and the radio access network device.
The method according to claim 1, wherein the second message includes an identifier of the PDU session, and the set of Ethernet protocol layer parameters corresponds to the identifier of the PDU session.
The method according to claim 1, wherein the second message includes a quality of service flow identifier QFI, and the set of Ethernet protocol layer parameters corresponds to the one QFI; or,

The second message includes multiple QFIs, and each set of Ethernet protocol layer parameters in the multiple sets of Ethernet protocol layer parameters corresponds to each QFI of the multiple QFIs.
The method according to any one of claims 1-3, wherein the method further comprises:

The wireless access network device sends to the second node the identifier of the first node, the first channel identifier, and the Ethernet protocol layer parameters corresponding to the first channel identifier, where the first channel identifier is used to indicate all For a channel between the first node and the second node, the Ethernet protocol layer parameters corresponding to the first channel identifier include the set of Ethernet protocol layer parameters, or the first channel identifier corresponds to The Ethernet protocol layer parameters include some or all of the multiple sets of Ethernet protocol layer parameters, and the first node is connected to the radio access network device through the second node.
The method according to claim 4, wherein the method further comprises:

The radio access network device sends a second channel identifier corresponding to the first channel identifier to the second node, where the second channel identifier is used to indicate the relationship between the second node and the radio access network device A passage between.
The method according to claim 5, wherein the second channel identifier is a logical channel identifier or a data radio bearer identifier.
The method according to any one of claims 4-6, wherein the first channel identifier is a logical channel identifier, a data radio bearer identifier, or a side link data radio bearer identifier.
A parameter transmission method, characterized in that the method includes:

The core network device receives a first message from the first node, where the first message is used to request the core network device to establish or modify a protocol data unit PDU session of the first node;

The core network device sends a second message to the radio access network device, the second message is used to establish or modify the PDU session, and the second message includes one or more sets of Ethernet protocol layer parameters, and The Ethernet protocol layer parameters include one or more of the following: data packet size, data packet period, data packet arrival time, data packet survival time, receiving window, Ethernet type, and Ethernet packet information; the Ethernet protocol layer The parameter is used to optimize data transmission between the first node and the radio access network device.
The method according to claim 8, wherein the second message includes an identifier of the PDU session, and the set of Ethernet protocol layer parameters corresponds to the identifier of the PDU session.
The method according to claim 8, wherein the second message includes a quality of service flow identifier QFI, and the set of Ethernet protocol layer parameters corresponds to the one QFI; or,

The second message includes multiple QFIs, and each set of Ethernet protocol layer parameters in the multiple sets of Ethernet protocol layer parameters corresponds to each QFI of the multiple QFIs.
The method according to claim 8 or 10, wherein the method further comprises:

The core network device sends each group of Ethernet protocol layer parameters in the one or more groups of Ethernet protocol layer parameters and the QFI corresponding to each group of Ethernet protocol layer parameters to the first node. The QFI corresponding to the group Ethernet protocol layer parameter is used by the first node to determine the QFI corresponding to the uplink data according to the Ethernet protocol layer parameter of the uplink data.
A parameter transmission method, characterized in that the method includes:

The first node sends a first message to the core network device, where the first message is used to request the core network device to establish or modify the protocol data unit PDU session of the first node;

The first node receives each group of Ethernet protocol layer parameters from one or more groups of Ethernet protocol layer parameters from the core network device and the QFI corresponding to each group of Ethernet protocol layer parameters. The QFI corresponding to the network protocol layer parameters is used by the first node to determine the QFI corresponding to the uplink data according to the Ethernet protocol layer parameters of the uplink data, and the Ethernet protocol layer parameters include one or more of the following: data packet size , Data packet cycle, data packet arrival time, data packet survival time, receiving window, Ethernet type, and Ethernet packet information.
A communication device, characterized in that the communication device includes: a receiving module and a sending module;

The receiving module is configured to receive a first message from a first node, where the first message is used to request a core network device to establish or modify a protocol data unit PDU session of the first node;

The sending module is configured to send the first message to the core network device;

The receiving module is further configured to receive a second message from the core network device, the second message is used to establish or modify the PDU session, and the second message includes one or more sets of Ethernet protocol layers Parameters, the Ethernet protocol layer parameters include one or more of the following: data packet size, data packet period, data packet arrival time, data packet survival time, receiving window, Ethernet type, and Ethernet packet information; The Ethernet protocol layer parameters are used to optimize data transmission between the first node and the communication device.
The communication device according to claim 13, wherein the second message includes an identifier of the PDU session, and the set of Ethernet protocol layer parameters corresponds to the identifier of the PDU session.
The communication device according to claim 13, wherein the second message includes a quality of service flow identifier QFI, and the set of Ethernet protocol layer parameters corresponds to the one QFI; or,

The second message includes multiple QFIs, and each set of Ethernet protocol layer parameters in the multiple sets of Ethernet protocol layer parameters corresponds to each QFI of the multiple QFIs.
The communication device according to any one of claims 13-15, wherein:

The sending module is further configured to send the identifier of the first node, the first channel identifier, and the Ethernet protocol layer parameters corresponding to the first channel identifier to the second node, where the first channel identifier is used to indicate For a channel between the first node and the second node, the Ethernet protocol layer parameter corresponding to the first channel identifier includes the set of Ethernet protocol layer parameters, or the first channel identifier corresponds to The Ethernet protocol layer parameters include some or all of the multiple sets of Ethernet protocol layer parameters, and the first node is connected to the communication device through the second node.
The communication device according to claim 16, wherein:

The sending module is further configured to send a second channel identifier corresponding to the first channel identifier to the second node, where the second channel identifier is used to indicate the communication between the second node and the communication device One channel.
The communication device according to claim 17, wherein the second channel identifier is a logical channel identifier or a data radio bearer identifier.
The communication device according to any one of claims 16-18, wherein the first channel identifier is a logical channel identifier, a data radio bearer identifier, or a side link data radio bearer identifier.
A communication device, characterized in that the communication device includes: a receiving module and a sending module;

The receiving module is configured to receive a first message from a first node, where the first message is used to request the communication device to establish or modify a protocol data unit PDU session of the first node;

The sending module is configured to send a second message to a radio access network device, the second message is used to establish or modify the PDU session, and the second message includes one or more sets of Ethernet protocol layer parameters, The Ethernet protocol layer parameters include one or more of the following: data packet size, data packet period, data packet arrival time, data packet survival time, receiving window, Ethernet type, and Ethernet packet information; The protocol layer parameters are used to optimize data transmission between the first node and the radio access network device.
The communication device according to claim 20, wherein the second message includes an identifier of the PDU session, and the set of Ethernet protocol layer parameters corresponds to the identifier of the PDU session.
The communication device according to claim 21, wherein the second message includes a quality of service flow identifier QFI, and the set of Ethernet protocol layer parameters corresponds to the one QFI; or,

The second message includes multiple QFIs, and each set of Ethernet protocol layer parameters in the multiple sets of Ethernet protocol layer parameters corresponds to each QFI of the multiple QFIs.
The communication device according to claim 20 or 22, wherein:

The sending module is further configured to send each group of Ethernet protocol layer parameters in the one or more groups of Ethernet protocol layer parameters and the QFI corresponding to each group of Ethernet protocol layer parameters to the first node, The QFI corresponding to each group of Ethernet protocol layer parameters is used by the first node to determine the QFI corresponding to the uplink data according to the Ethernet protocol layer parameters of the uplink data.
A communication device, characterized in that the communication device includes: a receiving module and a sending module;

The sending module is configured to send a first message to a core network device, where the first message is used to request the core network device to establish or request a protocol data unit PDU session of the communication device;

The receiving module is configured to receive each group of Ethernet protocol layer parameters and the QFI corresponding to each group of Ethernet protocol layer parameters in one or more groups of Ethernet protocol layer parameters from the core network device, and The QFI corresponding to the group Ethernet protocol layer parameter is used by the communication device to determine the QFI corresponding to the uplink data according to the Ethernet protocol layer parameter of the uplink data, and the Ethernet protocol layer parameter includes one or more of the following: data packet Size, packet period, packet arrival time, packet lifetime, receive window, Ethernet type, and Ethernet packet information.
A computer-readable storage medium, characterized by comprising instructions, which when running on a communication device, causes the communication device to execute the method according to any one of claims 1-7, or causes the The communication device executes the method according to any one of claims 8-11, or causes the communication device to execute the method according to claim 12.
A communication system, characterized in that the communication system comprises the communication device according to any one of claims 13-19 and the communication device according to any one of claims 20-23.
A communication device, characterized in that the communication device includes: a processor;

The processor is configured to read the computer-executable instructions in the memory, and execute the computer-executable instructions, so that the communication device executes the method according to any one of claims 1-7; or, executes the method as claimed in claim 8. -11 The method according to any one of them; or, the method according to claim 12 is executed.
A communication device, characterized in that the communication device includes: a processor and a memory;

The memory is used to store computer-executable instructions, and when the processor executes the computer-executed instructions, the communication device is caused to execute the method according to any one of claims 1-7; or, execute the method as claimed in any one of claims 1-7; The method according to any one of 8-11; or, the method according to claim 12 is executed.
A computer-readable storage medium having computer programs or instructions stored thereon, wherein when the computer programs or instructions are executed by a processor, the method according to any one of claims 1-7 is executed; Or, execute the method according to any one of claims 8-11; or, execute the method according to claim 12.