CN114374993A

CN114374993A - 5G-TSN terminal gateway

Info

Publication number: CN114374993A
Application number: CN202210173212.4A
Authority: CN
Inventors: 朱莹; 吕志勇; 程远
Original assignee: Kyland Technology Co Ltd
Current assignee: Kyland Technology Co Ltd
Priority date: 2022-02-24
Filing date: 2022-02-24
Publication date: 2022-04-19
Anticipated expiration: 2042-02-24
Also published as: CN114374993B

Abstract

The invention provides a 5G-TSN terminal gateway, which comprises a 5G port, a TSN port and a DS-TT module; the 5G port interacts data with the 5G network, and the 5G network is connected with the second TSN network node; the TSN port interacts data with a first TSN network node, and the first TSN network node is connected with a 5G-TSN terminal gateway; the DS-TT module is used for realizing data forwarding between the 5G port and the TSN port, when first uplink data are forwarded to the 5G port, when the quality of the 5G network is worse than a set threshold value, the enhanced forwarding is carried out, and the quality of the 5G network comprises one or more of the following information: the bandwidth of the 5G cell, the quality of the 5G signal and the time delay of the 5G cell, and the first uplink data is data from the first TSN node. The 5G-TSN terminal gateway improves the certainty of data interaction between the TSN node at the terminal side and the TSN node at the network side through the 5G network.

Description

5G-TSN terminal gateway

Technical Field

The invention relates to the technical field of networks, in particular to a 5G-TSN terminal gateway.

Background

3GPP R16 defines a 5G Network as an exchange node model of a TSN Network, and defines a terminal-side TSN converter (DS-TT) and a Network-side TSN converter (NW-TT) on the 5G terminal side and the 5G core Network side, respectively, to implement effective cooperation between the 5G and TSN service networks on the terminal side and the Network side, so that the TSN node on the terminal side and the TSN node on the Network side implement TSN-based synchronous connection through the 5G Network.

However, 3GPP R16 does not provide an implementation manner of DS-TT, the TSN network is a deterministic network, the 5G network is a non-deterministic network, and simple forwarding between the two cannot realize effective cooperation between the 5G and TSN service networks.

In order to realize the function of the DS-TT of the terminal side, the invention provides the 5G-TSN terminal gateway, the effective cooperation between the 5G and the TSN business network is realized on the terminal side, and the certainty of data interaction between the TSN node of the terminal side and the TSN node of the network side through the 5G network is improved.

Disclosure of Invention

In view of this, embodiments of the present invention provide a 5G-TSN terminal gateway, which implements data forwarding between a 5G network and a TSN network through a DS-TT module, and performs enhanced forwarding according to a frame marker of a TSN and quality of the 5G network, thereby implementing effective collaboration between the 5G and TSN service networks on a terminal side, and improving certainty of data interaction between a TSN node on the terminal side and a TSN node on a network side through the 5G network.

The first aspect of the embodiment of the invention provides a 5G-TSN terminal gateway, which comprises a 5G port, a TSN port and a DS-TT module; the 5G port is used for data interaction between the 5G-TSN terminal gateway and a 5G network, and the 5G network is connected with a second TSN network node through a UPF; the TSN port is used for the interaction of data between the 5G-TSN terminal gateway and a first TSN network node, and the first TSN network node is connected with the 5G-TSN terminal gateway; the DS-TT module is configured to implement data forwarding between the 5G port and the TSN port, where when forwarding a first uplink data to the 5G port, the first uplink data is mapped to a 5G transmit queue with different 5G QoS, and when a 5G network quality is worse than a set threshold, the 5G network quality includes one or more of the following information: the bandwidth of the 5G cell, the quality of the 5G signal and the time delay of the 5G cell, and the first uplink data is data from the first TSN node.

Therefore, data forwarding between the 5G port and the TSN port is achieved through the DS-TT module, effective cooperation between the 5G service network and the TSN service network is achieved on the terminal side, enhanced forwarding is conducted according to the frame marks of the TSN and the quality of the 5G network, and the certainty of data interaction between the TSN node on the terminal side and the TSN node on the network side through the 5G network is improved.

In a possible implementation manner of the first aspect, the DS-TT module performs enhanced forwarding when the 5G network quality is worse than a set threshold, including: when any index of the 5G cell bandwidth, the 5G signal quality and the 5G cell time delay is worse than a corresponding first set threshold, and when the priority level of the TSN frame of the first uplink data is higher than the first set level, each TSN frame of the first uplink data is respectively copied into a plurality of TSN frames, and the TSN frames are placed into the 5G sending queue corresponding to the 5G port. The duplicated TSN frames are de-duplicated at the 5G core network NW-TT.

Therefore, when any index in the 5G network quality is lower than the respective corresponding first set threshold, each TSN frame of the first uplink data is copied into a plurality of TSN frames, so that automatic retransmission is realized to reduce the influence of the quality degradation of the 5G network, and the certainty of data interaction between the TSN node on the terminal side and the TSN node on the network side through the 5G network is improved.

In a possible implementation manner of the first aspect, the DS-TT module performs enhanced forwarding when the 5G network quality is worse than a set threshold, including: when any index of 5G cell bandwidth, 5G signal quality and 5G cell time delay is worse than a respective corresponding first set threshold and when the priority level of the TSN frame of the first uplink data is higher than a first set level, informing the 5G port to copy each RLC data block of a 5G RLC layer corresponding to the TSN frame of the first uplink data into a plurality of blocks; the 5G port is also used for copying each RLC data block of the 5G RLC layer corresponding to the TSN frame of the first uplink data into a plurality of blocks according to the requirement of the DS-TT module.

Therefore, when any index in the 5G network quality is lower than the corresponding first set threshold value, the RLC layer automatic retransmission is realized in the mode of RLC UM through the RLC layer data block copying mode to reduce the influence of 5G network quality reduction, and the certainty of data interaction between the TSN node of the terminal side and the TSN node of the network side through the 5G network is improved.

In a possible implementation manner of the first aspect, the DS-TT module performs enhanced forwarding when the 5G network quality is worse than a set threshold, including: when any index of the 5G cell bandwidth, the 5G signal quality and the 5G cell time delay is worse than a corresponding first set threshold, and when the priority level of the TSN frame of the first uplink data is higher than a first set level, the TSN stream of the first uplink data is copied into a plurality of streams. One specific scheme of this TSN stream replication is a stream replication technique of 802.1cb, and the replicated stream is deduplicated at the receiving side by the 802.1cb protocol.

Therefore, when any index in the 5G network quality is lower than the respective corresponding first set threshold, the wireless channel diversity during wireless transmission is realized in a stream replication manner to reduce the influence of the quality reduction of the 5G network, so that the certainty of data interaction between the terminal-side TSN node and the network-side TSN node through the 5G network is improved.

In a possible implementation manner of the first aspect, the DS-TT module performs enhanced forwarding when the 5G network quality is worse than a set threshold, further including: when any index of the 5G cell bandwidth, the 5G signal quality and the 5G cell time delay is worse than the respective second set threshold, a wireless channel meeting the corresponding 5G QoS requirement is also established in advance through the 5G port, and the channel is maintained until the first uplink data transmission is finished, wherein the second set threshold is worse than the first set threshold.

Therefore, when any index in the 5G network quality is lower than the respective corresponding second set threshold, the certainty of data interaction between the terminal-side TSN node and the network-side TSN node through the 5G network is improved in a manner of pre-establishing a wireless channel.

In a possible implementation manner of the first aspect, the DS-TT module maps the first uplink data to a 5G transmit queue with different 5G QoS, and includes: determining a corresponding 5QI in 5G QoS according to the priority level of a TSN frame of first uplink data, and determining a resource type, an internal priority level and a packet delay budget in the corresponding 5 QI; and determining the ARP medium priority level in the 5G QoS according to the priority level of the TSN frame, and mapping the mark of whether the TSN frame can be preempted to the mark of whether the TSN frame can be preempted in the ARP in the 5G QoS.

Therefore, the certainty of data interaction between the TSN node at the terminal side and the TSN node at the network side through the 5G network is improved by determining the 5QI and ARP parameters in the 5G QoS of the first uplink data according to the TSN frame mark.

In one possible implementation of the first aspect, the DS-TT module comprises a synchronization module, a queuing module, a scheduling module, and a 5G forwarding module; the synchronization module is used for realizing synchronization of the DS-TT module and a master clock node of a TSN network where a second TSN network node is located; the queuing module is used for placing the first uplink data into different TSN sending queues according to the TSN frame marks of the first uplink data, and is also used for acquiring data from a 5G network from a TSN receiving queue and sending the data to the TSN port; the scheduling module is used for acquiring first uplink data from a corresponding TSN sending queue according to a first scheduling strategy and sending the first uplink data to the 5G forwarding module; the 5G forwarding module is used for mapping the first uplink data to the corresponding 5G sending queue according to the TSN frame mark and performing the enhanced forwarding according to the 5G network quality; the 5G forwarding module is further configured to receive the first downlink data from the 5G port and send the first downlink data to the queuing module.

Therefore, synchronization between the 5G-TSN terminal gateway and the master clock node of the TSN is realized through the synchronization module, the first uplink data are queued, scheduled and forwarded through the queuing module, the scheduling module and the 5G forwarding module respectively, the first uplink data are sent according to the 5G QoS mapped by the TSN frame mark, and effective cooperation between the TSN and the 5G network is realized on the terminal side.

In a possible implementation manner of the first aspect, the synchronization module is specifically configured to implement synchronization of the 5G-TSN terminal gateway and a TSN network in which a second TSN network node is located according to a bidirectional delay between the DS-TT module and a 5G core network UPF and a bidirectional delay between a 5G core network UPF and a master clock node of a TSN network in which the second TSN network node is located; or the synchronization module is specifically configured to implement synchronization of the 5G-TSN terminal gateway and the TSN network in which the second TSN network node is located according to a bidirectional delay of a master clock node of the TSN network in which the DS-TT module and the second TSN network node are located.

Therefore, accurate clock synchronization of the DS-TT module and the main clock node of the TSN network where the second TSN network node is located is achieved through the segmented delay or the transparent transmission delay by utilizing the gPTP protocol.

In a possible implementation manner of the first aspect, when queuing the first uplink data, the queuing module places the first uplink data into a corresponding TSN transmission queue according to the priority level of the TSN frame and/or whether the first uplink data can be preempted and/or a target subnet ID, where the target subnet ID corresponds to a node of the second TSN subnet.

Therefore, the queuing of the first uplink data is realized according to the priority level of the TSN frame in the TSN frame marking and/or whether the TSN frame can be preempted and/or the target subnet ID, so as to carry out deterministic scheduling through a scheduling algorithm.

In a possible implementation manner of the first aspect, the 5G cell bandwidth includes a 5G cell configuration bandwidth, and is acquired from a cell broadcast message of 5G through the 5G port; and/or the quality of the 5G signal comprises the quality of a broadcast channel and/or the quality of a service channel of the 5G signal, and is acquired through the 5G port; and/or the 5G cell time delay comprises a time delay from the 5G port to a UPF of a 5G core network; the 5G cell latency is acquired by the synchronization module in some embodiments.

Therefore, the 5G cell zone, the 5G signal quality and the 5G cell time delay in the 5G network quality are obtained through the corresponding modules, so that the scheduling certainty of the scheduling module is improved.

In a possible implementation manner of the first aspect, the DS-TT module further includes a configuration module, configured to receive configuration data of a first scheduling policy of the DS-TT module from a centralized network configurator through a 5G port, and configure the first scheduling policy of the DS-TT module, where the first scheduling policy corresponds to a second scheduling policy of an NW-TT of a 5G core network, so that the DS-TT module implements a function of a TSN switching node by combining the 5G network and the NW-TT.

In the above way, the configuration module, the CUC and the CNC are used for realizing the configuration of the first strategy of the DS-TT module, and the configuration module and the NW-TT of the UPF are used for realizing the function of the 5G network as the TSN bridging model.

In a possible implementation manner of the first aspect, the configuration module is further configured to send, by the TSN port, a stream creation requirement of the TSN port to a centralized user configurator through the 5G port; the configuration module is further configured to register, by the TSN port, the 5G-TSN terminating gateway online with a centralized network configurator through the 5G port.

Therefore, the CUC can carry out bandwidth matching on the streams of the TSN port through reporting the stream creation requirements of the TSN port and registering the 5G-TSN terminal gateways of each online port through the configuration module, and the CNC can make a correct first scheduling strategy and a correct second scheduling strategy.

In a possible implementation manner of the first aspect, the 5G-TSN terminating gateway further includes an ethernet port and an ethernet forwarding module; the Ethernet port is used for realizing connection with other Ethernet networks, and the other Ethernet networks at least comprise an IP-V6 network; the Ethernet forwarding module is used for realizing data forwarding between an Ethernet port and the 5G port or the TSN port.

From the above, the interaction of the 5G network or TSN network with other ethernet networks including IP-V6 is realized through the ethernet port and the ethernet forwarding module.

Drawings

FIG. 1 is a schematic diagram of an application scenario of an embodiment of the apparatus of the present invention;

FIG. 2 is a schematic structural diagram of a first embodiment of the apparatus of the present invention;

fig. 3A is a schematic flow chart of 5G forwarding data to a TSN network according to a first embodiment of the present invention;

fig. 3B is a schematic flowchart of a process of forwarding data to 5G by a TSN network according to a first embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a second application scenario of the apparatus according to the present invention;

FIG. 5 is a schematic structural diagram of a second embodiment of the apparatus of the present invention;

FIG. 6 is a flowchart illustrating a configuration method according to a second embodiment of the present invention;

Detailed Description

In the following description, reference is made to "some embodiments" which describe a subset of all possible embodiments, but it is understood that "some embodiments" may be the same subset or different subsets of all possible embodiments, and may be combined with each other without conflict.

In the following description, references to the terms "first \ second \ third, etc." or module a, module B, module C, etc. are used solely to distinguish between similar objects or different embodiments and are not intended to imply a particular ordering with respect to the objects, it being understood that where permissible any particular ordering or sequence may be interchanged to enable embodiments of the invention described herein to be practiced otherwise than as shown or described herein.

In the following description, reference to reference numerals indicating steps, such as S110, S120 … …, etc., does not necessarily indicate that the steps are performed in this order, and the order of the preceding and following steps may be interchanged or performed simultaneously, where permissible.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing embodiments of the invention only and is not intended to be limiting of the invention.

Before introducing the embodiments of the present invention, the 5G network and 5G QoS, TSN network and TSN frame markers to which the present invention relates will be described.

The 1.5G network comprises a base station gNB and a core network, wherein the core network comprises a user plane function network element UPF, a policy control function network element PCF, an access management function network element AMF and a session management function network element SMF, and the user terminal UE accesses the 5G network through the gNB by using a 5G wireless channel allocated by the gNB and is connected with other networks through the UPF. The AMF controls the access function of the user terminal UE, the SMF controls the session function of the user terminal UE and the 5G network, and the PCF controls the QoS of the 5G wireless channel distributed for the UE.

The 2.5G QoS includes parameters such as a 5G QoS identifier 5QI, an allocation and retention priority level ARP, etc.

Wherein, 5QoS characteristics are indexed by 5QI, and the 5QoS characteristics include parameters of resource type of 5G, internal priority, packet delay budget PDB, and the like. The resource types of the 5G comprise GBR, non-GBR and delay key GBR, the resource types of the TSN frame correspond to the delay key GBR, the packet delay budget PDB is determined according to the TSN frame mark, and the internal priority and the packet delay budget PDB are determined according to the priority level of the TSN frame.

The ARP is the access capability of 5QoS, including priority level, whether the low level can be preempted or not, whether the high level can be preempted or not, and mapping is respectively carried out according to frame marks in TSN frames.

And 3, RLC transmission mode, 5G, sequentially carrying out SDCP-PDCP-RLC-MAC segmentation and encapsulation on data to be transmitted, not carrying out transmission quality guarantee on the SDCP layer and the PDCP layer, and carrying out transmission quality guarantee on the MAC layer based on HARQ retransmission. The UM mode is adopted for the data with high time delay requirement on the RLC layer, the transmission quality is not guaranteed on the RLC layer, but the RLC data blocks can be repeated; and the data with high accuracy requirement is ensured on the transmission quality based on ARQ retransmission by adopting an AM mode in an RLC layer. The UM mode is generally adopted when the TSN frame data has high requirement on the delay.

4.5G channel: corresponding to the transmission resources in the time, frequency and space domain (space division domain of MIMO).

The TSN network is a time sensitive network comprising: the TSN terminal nodes are divided into a TSN sending terminal and a TSN receiving terminal. In the TSN network, clocks of each TSN terminal node and each TSN switching node are synchronized based on a gPTP protocol, and each TSN switching node is scheduled according to a scheduling strategy configured by CNC.

The TSN frame of the TSN network data includes TSN frame markers including: TSN network type tag, priority level, whether preemption marking is possible, and target subnet identification number. The priority determines the delay requirement of the TSN frame, which is the basis for scheduling in the TSN switching node.

The embodiments of the present invention provide a 5G-TSN terminal gateway, which implements data forwarding between a 5G network and a TSN network according to a frame flag of a TSN and a quality of the 5G network, implements effective collaboration between the 5G network and a TSN service network on a terminal side, and improves certainty of data interaction between a TSN node on the terminal side and a TSN node on a network side through the 5G network.

Embodiments of a 5G-TSN terminating gateway according to the present invention are described below with reference to the accompanying drawings.

The embodiment of the 5G-TSN terminal gateway comprises a 5G port, a TSN port and a DS-TT module, and data forwarding between a 5G network and a TSN network is realized through the DS-TT module. When in forwarding, the data of the terminal side TSN node is mapped to a 5G sending queue with different 5G QoS according to the TSN frame mark, and a flow copy, a TSN data copy, an RLC data block copy or a wireless channel is established in advance according to the 5G network quality for sending, so that the effective cooperation between the 5G service network and the TSN service network is realized at the terminal side, and the deterministic data interaction between the terminal side TSN node and the network side TSN node is realized through the 5G network.

A first embodiment of a 5G-TSN terminating gateway according to the present invention is described below with reference to fig. 1 to 3B.

First, an application scenario structure of a first embodiment of a 5G-TSN terminal gateway according to the present invention is described with reference to fig. 1, which includes:

the 5G-TSN terminal gateway 10, the 5G network 20, the first TSN node 30 and the second TSN node 40, the 5G network 20 includes a base station gNB 21, a user plane function network element UPF23 and a policy control function network element PCF 25, and the UPF23 includes an NW-TT 232.

Wherein, the 5G-TSN terminating gateway 10 implements data conversion and cooperation between the first TSN node 30 and the 5G network 20.

Wherein, the UPF23 realizes the connection between the 5G network 20 and the second TSN node 40, and the NW-TT 232 realizes the data conversion and coordination between the 5G network 20 and the second TSN node 40. The PCF 25 is configured to determine, according to the 5G QoS registered by the 5G-TSN terminal gateway 10, the 5Q QoS of the radio channel allocated by the gNB 21 to the 5G-TSN terminal gateway 10.

The 5G-TSN terminal gateway 10 and the 5G network 20 form a TSN switch bridge, and implement data interaction of TSN frames between the first TSN node 30 and the second TSN node 40.

For example, each network element (except PCF) in fig. 1 shows 2, and each network element in an actual scenario includes a plurality of network elements, where each gNB 21 may be wirelessly connected to a plurality of 5G-TSN terminal gateways 10, and each 5G-TSN terminal gateway 10 may also be connected to a plurality of first TSN nodes 30.

It is to be emphasized that: the 5G network 20 likewise comprises an access management function network element AMF (not shown in fig. 1) and a session management function network element SMF (not shown in fig. 1).

The structure of a first embodiment of a 5G-TSN terminating gateway according to the present invention is described below with reference to fig. 2, and includes: 5G port 11, TSN port 13 and DS-TT module 15, wherein DS-TT module 15 comprises synchronization module 151, queuing module 153, scheduling module 155 and 5G forwarding module 157.

The 5G port 11 and the TSN port 13 constitute an interface plane of the 5G-TSN terminating gateway 10. The synchronization module 151, the queuing module 153, the scheduling module 155 and the 5G forwarding module 157 of the DS-TT module 15 form a forwarding plane of the 5G-TSN terminating gateway 10.

The 5G port 11 is used for data interaction between the 5G-TSN terminal gateway 10 and the 5G network 20, and includes receiving first downlink data from the 5G network 20 and transmitting first uplink data to the 5G network 20.

In some embodiments, the 5G port 11 is further used for copying each RLC block into several blocks when the 5G forwarding module 157 requires 5G RLC layer segmentation of the TSN frame of the first uplink data.

The TSN port 13 is used for data interaction between the 5G-TSN terminating gateway 10 and the first TSN network node 30, and includes receiving first uplink data from the first TSN network node 30 and transmitting first downlink data to the first TSN network node 30.

The DS-TT module 15 is used for realizing data forwarding between the 5G port 11 and the TSN port 13.

When the TSN port 13 forwards data to the 5G port 11, the data of the TSN node at the terminal side is mapped into a 5G sending queue with different 5G QoS according to the TSN frame mark, and a wireless channel is adopted for forwarding by adopting flow replication, TSN data replication, RLC data block replication or pre-establishment according to 5G network quality, wherein the 5G network quality comprises 5G cell bandwidth, 5G signal quality and 5G cell time delay.

The synchronization module 151 is configured to synchronize the DS-TT module 15 with a master clock node of a TSN network in which the second TSN network node 40 is located.

When the DS-TT module 15 is synchronized with the clock of the master clock node of the TSN network in which the second TSN network node 40 is located, the first TSN network node 40 realizes clock synchronization with the master clock node of the TSN network in which the second TSN network node 40 is located by synchronizing with the DS-TT module 15.

In some embodiments, using a boundary synchronization method, the synchronization module 151 implements clock synchronization of the 5G-TSN terminal gateway 10 and the TSN network in which the second TSN network node 40 is located according to the bidirectional delay between the DS-TT module 15 and the UPF23 and the bidirectional delay between the UPF23 and the master clock node of the TSN network in which the second TSN network node 40 is located, by using a ptp protocol.

In other embodiments, a transparent transmission synchronization method is used, and a gPTP protocol is used to implement clock synchronization between the 5G-TSN terminal gateway 10 and the TSN network in which the second TSN network node 40 is located according to the bidirectional delay between the DS-TT module 15 and the master clock node of the TSN network in which the second TSN network node 40 is located.

The queuing module 153 is configured to put the first uplink data into different TSN transmission queues according to the frame flag of the TSN frame of the first uplink data, where the first uplink data is data of the TSN frame structure from the first TSN network node 30.

Wherein, different TSN sending queues have different priority levels and send in different time slices according to a scheduling strategy.

In some embodiments, when there are multiple UPFs 23 in the 5G network 20, the first upstream data is placed in different TSN transmit queues based on the priority of the TSN frame in the TSN frame marking and whether the marking can be preempted and the target subnet ID. The subnet ID corresponds to the second TSN node to which the corresponding UPF23 is connected.

In other embodiments, when a UPF23 exists in the 5G network 20, the first upstream data is placed in a different TSN transmit queue based on the priority of the TSN frame in the TSN frame marking and whether the marking can be preempted.

The queuing module 153 is further configured to obtain data from the 5G port 11 from the receive queue of the TSN, and send the data to the TSN port 13.

In some embodiments, when any one of the indexes of the 5G cell bandwidth, the 5G signal quality, and the 5G cell delay is worse than the respective first set threshold, and when the priority level of the TSN frame of the first uplink data is higher than the first set level, the queuing module 153 duplicates the TSN stream of the first uplink data into a plurality of streams by means of stream duplication, and places the streams into the corresponding TSN transmission queues. One specific implementation of the stream replication is a stream replication technology based on an 802.1cb protocol, and the stream replication technology is de-duplicated based on the 802.1cb protocol on the receiving side of the TSN stream. The wireless environment of the 5G channel always changes continuously because of the wireless characteristic, the quality of the 5G channel also changes continuously, and when the quality of the 5G channel is good, the quality of the 5G channel can meet the requirement; when the 5G channel quality is poor, the 5G channel quality of a part of time or a part of frequency domain or a part of airspace cannot meet the requirement, so that one index in the bandwidth of the 5G cell, the 5G signal quality and the time delay of the 5G cell is poor to a corresponding first set threshold value. The success rate of transmission is improved by the way that the repeated flow and the original flow are transmitted through different 5G resources in the air in a manner similar to multi-path concurrence.

Therefore, the TSN stream of the first uplink data is copied into a plurality of streams and put into the corresponding TSN sending queue, and the certainty of data sending is improved through multi-path concurrence.

The scheduling module 155 is configured to obtain the first uplink data from the corresponding TSN transmission queue according to the first scheduling policy, and send the first uplink data to the 5G forwarding module 157.

The first scheduling policy determines from which TSN transmission queue the data is acquired in each time slice, and transmits the data to the corresponding second TSN node through the 5G port 11 and the 5G network 20. The first scheduling policy corresponds to the second scheduling policy of NW-TT 232 in UPF23, so that 5G network 20 and 5G-TSN terminating gateway form one TSN switching node.

In some embodiments, the first scheduling policy is a static configuration. In other embodiments, the first scheduling policy is configured by a centralized network configurator CUC.

The 5G forwarding module 157 is configured to map the first uplink data into a 5G transmission queue with different 5G QoS according to the TSN frame flag, and transmit the first uplink data through the 5G port 11.

When mapping the first uplink data to the 5G transmission queues of different 5G QoS, the 5G forwarding module 157 determines the corresponding 5QI in the 5G QoS according to the priority of the TSN frame, and determines the resource type, the internal priority level, and the packet delay budget in the corresponding 5QI, where the TSN frame is mapped to the resource type of the delay-critical GBR, and the higher the priority level in the TSN frame flag is, the higher the internal priority level is, the stricter the packet delay budget requirement is; and determining the ARP middle priority in the 5G QoS according to the priority of the TSN frame, and mapping the mark of whether the TSN frame can be preempted into the ARP middle priority in the 5G QoS, wherein the higher the priority in the TSN frame mark is, the higher the priority in the ARP middle priority in the 5G QoS is.

Because the 5G QoS is configured in the 5G network PCF 25 to correspond to different radio channels, the 5G port 11 puts the first uplink data into different radio channels for transmission according to the mapped 5G QoS.

Therefore, the frame mark in the TSN frame is mapped to different marks of 5G QoS, so that the TSN frame with high priority level is transmitted preferentially, thereby improving the certainty of TSN data transmission

In some embodiments, when the 5G forwarding module 157 transmits the first uplink data through the 5G port 11, when any one of the 5G cell bandwidth, the 5G signal quality, and the 5G cell delay is worse than a respective first set threshold, and when the priority level of the TSN frame of the first uplink data is higher than the first set level, each TSN frame of the first uplink data is respectively copied into a plurality of TSN frames, and the TSN frames are placed in the 5G transmission queue corresponding to the 5G port. Note that, in order to delete the duplicated TSN frame in the NW-TT 232, the method of adding a flag to the duplicated frame is used to delete duplication.

Because the UM mode is adopted in the RLC layer for the 5G pair of TSN frame data, when the 5G channel quality is poor, the HARQ of the MAC cannot guarantee the transmission accuracy (it is shown that the bandwidth of the 5G cell, the 5G signal quality, and the delay of the 5G cell are different from the corresponding first set threshold), so that the RLC data block is lost and the TSN frame data is lost. Each TSN frame of the first uplink data is respectively duplicated into a plurality of frames, so that the automatic repetition of RLC data packets is increased similarly, and the sending success rate of the first uplink data is improved.

Therefore, each TSN frame of the first uplink data is respectively copied into a plurality of frames, the frames are placed into the 5G sending queue, and the certainty of data sending is improved through automatic repetition.

In some embodiments, the 5G forwarding module 157 notifies the 5G port 11 to copy each RLC data block of the 5G RLC layer corresponding to the TSN frame of the first uplink data into a plurality of blocks when any one of the 5G cell bandwidth, the 5G signal quality, and the 5G cell delay is worse than the respective first set threshold and when the priority level of the TSN frame of the first uplink data is higher than the first set level.

Among them, since the UM mode is adopted in the RLC layer for the TSN frame data of 5G, the UM mode of RLC has no retransmission function, but duplicate RLC data blocks can be deleted at the receiving side. When the radio channel quality is poor, the success rate of sending the TSN frame data of the first uplink data is improved by copying the RLC data block.

In some embodiments, when the 5G forwarding module 157 sends the first uplink data through the 5G port 11, when any one of the indexes of the 5G cell bandwidth, the 5G signal quality, and the 5G cell time delay is worse than a respective second set threshold, a wireless channel meeting the 5G qos requirement is also established through the 5G port in advance, and the channel is maintained online, where each index of the second set threshold is worse than a corresponding index of the first set threshold.

Therefore, the wireless channel meeting the 5G QoS requirement is established in advance, so that the time for establishing the wireless channel is saved, the data transmission time delay is reduced, and the certainty of data transmission is improved.

The 5G cell bandwidth includes a 5G cell configuration bandwidth, and the 5G cell configuration bandwidth is acquired from the broadcast information of 5G through the 5G port 11.

The quality of the 5G signal includes a broadcast channel quality and/or a traffic channel quality of the 5G signal, the broadcast channel quality is obtained by the 5G port 11 according to an RSRP or a quality SINR of the 5G broadcast signal obtained by measuring the broadcast message, and the traffic channel quality is obtained by the 5G port 11 according to an RSRP or a quality CQI and an SINR of the traffic channel signal obtained by measuring the traffic channel.

The 5G cell delay includes a delay from the 5G port 11 to the UPF23 of the 5G core network, and the synchronization module 151 obtains the delay according to the gPTP protocol.

The operation flow of a first embodiment of the 5G-TSN terminating gateway according to the present invention is described below with reference to fig. 3A and 3B.

Fig. 3A shows a method for forwarding data from the 5G port 11 to the TSN port 13 in the first embodiment of the gateway, which includes steps S1110 to S1140.

S1110: the 5G port 11 receives the first downlink data.

The first downlink data is data from the second TSN node 40 to the first TSN node 30, is data of a TSN frame structure, and is received by the 5G port 11 through an air interface after being processed by the UPF23 and the gNB 21 of the 5G network 20.

The first downlink data is marked with different wireless headers through the UPF23 and the gNB 21, and is recovered to be data of a TSN frame structure after the wireless headers are removed at the 5G port 11.

S1120: the 5G forwarding module 157 acquires the first downlink data from the 5G port 11, and sends the first downlink data to the queuing module 153.

Here, the TSN scheduling of the first downlink data is completed in the NW 232 of the UPF23, and the scheduling of the 5G network is completed in the gNB 21, so that the process directly enters the queuing module 153.

S1130: the queuing module 153 places the first downstream data into a different TSN receive queue based on the TSN frame marker.

The TSN frame flag includes a priority level of the first downlink data, a preemption-enabled flag, and a target subnet ID corresponding to the first TSN node 30.

S1140: the TSN port 13 acquires the first downlink data from each TSN receive queue, and transmits the first downlink data to the corresponding first TSN node 30.

During sending, the destination MAC address of the first downlink data is modified to the MAC address of the corresponding first TSN node 30, and the source MAC address is modified to the MAC address of the 5G-TSN terminating gateway.

Fig. 3B shows a method for forwarding data from TSN port 13 to 5G port 11 in the first embodiment of the 5G-TSN terminating gateway, which includes steps S1210 to S1250.

S1210: the TSN port 13 receives the first upstream data.

The first uplink data is a TSN data frame sent by the first TSN node 30 to the corresponding second TSN node 40.

S1220: the queuing module 153 obtains the first uplink data and puts the first uplink data into the corresponding TSN transmission queue according to the TSN frame flag.

The TSN frame mark includes a priority level of the first uplink data, a mark whether the first uplink data can be preempted, and a target subnet ID, and the target subnet ID corresponds to the second TSN node 40. The specific queuing method is described with reference to the queuing module 153 of this embodiment.

In some embodiments, when any one of the 5G cell bandwidth, the 5G signal quality, and the 5G cell delay is worse than the respective first set threshold, and when the priority level of the TSN frame of the first uplink data is higher than the first set level, the queuing module 153 copies the TSN stream of the first uplink data into a plurality of streams by means of stream copying, and places the streams into the corresponding TSN transmission queues

S1230: the scheduling module 155 obtains the corresponding first uplink data from the transmission queue according to the first scheduling policy, and transmits the first uplink data to the 5G forwarding module 157.

Wherein the first scheduling policy corresponds to the second scheduling policy of the NW-TT in the UPF23, so that the 5G network 20 and the 5G-TSN terminating gateway form one TSN switching node. The specific scheduling method is described with reference to the scheduling module 155 of the present embodiment.

S1240: the 5G forwarding module 157 maps the first uplink data into a 5G transmission queue with corresponding 5G QoS according to the TSN frame flag, and transmits the first uplink data through the 5G port 11.

The specific mapping method refers to the description of the 5G forwarding module 157 in this embodiment.

The method for copying the TSN frame of the first uplink data, notifying the 5G port 11 to copy the RLC data block of the 5G RCL layer, or establishing a radio channel in advance according to the quality of the 5G network further improves the data transmission certainty, and the specific forwarding method refers to the description of the 5G forwarding module 157 in this embodiment.

Note that the TSN data copy function in this step, the notification 5G RLC data block copy function, and the stream copy function in step S1220 are one-out-of-three functions.

S1250: the 5G port 11 obtains the first uplink data from the 5G transmit queue, and puts the first uplink data into a corresponding wireless channel according to the 5G QoS for transmission.

Wherein, when a wireless channel satisfying 5G QoS exists, the wireless channel is directly transmitted. When there is no wireless channel satisfying the 5G QoS, the 5G port 11 applies for establishing a channel satisfying the 5G QoS.

The 5G port 11 adds a corresponding wireless packet header to the first uplink data to be transmitted, removes the wireless packet header from the gNB 21, adds a corresponding packet header inside the core network, and releases the core network packet header at the UPF23 to recover the TSN frame. And then forwarded to the second TSN node 40 via the UPF 23.

When the 5G port 11 sends the first uplink data, the destination MAC address of the first uplink data is modified to the MAC address of the corresponding second TSN node 40, and the source MAC address is modified to the MAC address of the 5G-TSN terminal gateway. In some embodiments, the 5G port 11 is further used for copying each RLC block into several blocks when the 5G forwarding module 157 requires 5G RLC layer segmentation of the TSN frame of the first uplink data.

In summary, in the first embodiment of the 5G-TSN terminal gateway, data forwarding between the 5G network and the TSN network is implemented through the DS-TT module. When in forwarding, the data of the TSN node at the terminal side is mapped into a 5G sending queue with different 5G QoS according to the TSN frame mark, and a flow copy, a TSN data copy, an RLC data block copy or a wireless channel is established in advance according to the 5G network quality for sending, so that the effective cooperation between the 5G service network and the TSN service network is realized at the terminal side, and the certainty of data interaction between the TSN node at the terminal side and the TSN node at the network side through the 5G network is improved.

The second embodiment of the 5G-TSN terminal gateway inherits the structure of the first embodiment of the 5G-TSN terminal gateway, and has all the advantages of the first embodiment of the 5G-TSN terminal gateway. On the basis of the first embodiment of the 5G-TSN terminal gateway, the second embodiment of the 5G-TSN terminal gateway adds a configuration function of a first scheduling strategy of the 5G-TSN terminal gateway, so that the first scheduling strategy of the 5G-TSN terminal gateway is cooperated with a second scheduling strategy of an NW-TT of a UPF of a 5G core network, and the certainty of data interaction between a TSN node at a terminal side and a TSN node at a network side through a 5G network is further improved.

A second embodiment of the 5G-TSN terminating gateway according to the present invention is described below with reference to fig. 4 to 6.

First, an application scenario of a second embodiment of the 5G-TSN terminating gateway of the present invention is described with reference to fig. 4, and compared with the first embodiment of the 5G-TSN terminating gateway, a centralized user configurator CUC 50, a centralized network configurator CNC 60, and other ethernet nodes 70 are added in the application scenario of this embodiment, and a TSN application function network element TSN-AF 27 is also added in the 5G network 20.

The TSN-AF 27 is used for being connected with the CUC 50 and the CNC 60, and connection between the CUC 50 and the CNC 60 and the 5G-TSN terminal gateway 10 through the 5G network 20 is achieved.

The CUC 50 is configured to receive, through the TSN-AF 27, a stream creation request acquired by the TSN port 13, match the bandwidth of the TSN port 13 with the TSN bandwidth of the UPF23, and send the stream creation request after the bandwidth is matched to the CNC 60.

The CNC 60 is configured to acquire the topology structures of the 5G-TSN terminal gateway 10 and the UPF23 through the TSN-AF 27, schedule a TSN exchange bridge formed by the 5G-TSN terminal gateway 10 and the UPF23 according to a stream creation requirement collected by the CUC 50, send configuration data of a first scheduling policy to the 5G-TSN terminal gateway 10, and send configuration data of a second scheduling policy to the UPF 23.

In some embodiments, the CUC 50 and CNC 60 are implemented centrally in one SDC physical unit, and in other embodiments, the CUC 50 and CNC 60 are implemented using different physical units.

It is to be emphasized that: the 5G network 20 also includes an access management function network element AMF (not shown in fig. 4) and a session management function network element SMF (not shown in fig. 4), and the CUC 50 and the CNC 60 also pass through the AMF and the gNB 21 of the 5G network 20 when interacting data with the 5G-TSN terminal gateway 10 through the TSN-AF 27. The CNC 60 also passes the SMF of the 5G network 20 while interacting data with the UPF23 through the TSN-AF 27.

Wherein, the other ethernet nodes 70 are connected with the 5G-TSN terminating gateway 10, and the 5G-TSN terminating gateway 10 also realizes the interconnection of the other ethernet nodes 70 and 5G.

For example, only one ethernet node 70 is shown in fig. 4, and in an actual scenario, a plurality of ethernet nodes 70 may also be included.

The structure of a second embodiment of a 5G-TSN terminating gateway according to the present invention is described below with reference to fig. 5, and on the basis of the first embodiment of a 5G-TSN terminating gateway, the DS-TT module 15 of the present embodiment adds a configuration module 159, and the 5G-TSN terminating gateway 10 adds an ethernet port 17 and an ethernet forwarding module 19.

The configuration module 159 is configured to receive configuration data of a first scheduling policy of the DS-TT module 15 from the CNC 60 through the 5G port 11 and configure the first scheduling policy of the DS-TT module 15, the first scheduling policy corresponding to a second scheduling policy of the NW-TT 232 of the UPF23, so that the DS-TT module 15 implements the function of the TSN switching node in combination with the NW-TT 232 of the UPF23 through the 5G network 20.

The configuration module 159 is further configured to send the stream creation requirement acquired by the TSN port 13 to the CUC 50 through the 5G port 11.

Wherein the configuration module 159 is further configured to register the 5G-TSN terminating gateway 10 as online with the CNC 60 via the 5G port 11.

It is noted that in some embodiments, while the queuing module 153 improves the certainty of the first upstream data transmission through the function of stream replication, the configuration module 159 sends a stream creation requirement separately for each replicated stream.

The ethernet port 17 is used to enable the 5G-TSN terminating gateway 10 to connect to other ethernet networks, including at least an IP-V6 network.

The ethernet forwarding module 19 is used to implement data forwarding between the ethernet port 17 and the 5G port 11 or the TSN port 13.

The ethernet port 17, the 5G port 11 and the TSN port 13 form an interface plane of the 5G-TSN terminal gateway 10. The synchronization module 151, the queuing module 153, the scheduling module 155 and the 5G forwarding module 157 of the DS-TT module 15 and the ethernet forwarding module 19 form a forwarding plane of the 5G-TSN terminating gateway 10. The configuration module 159 of the DS-TT module 15 constitutes a management plane.

The following describes a configuration method of a 5G-TSN terminating gateway according to a second embodiment of the 5G-TSN terminating gateway of the present invention with reference to fig. 6.

For convenience of description, the first TSN node 30 is taken as a transmitting end (marker) of the TSN, and the second TSN node 40 is taken as a receiving end (Listener) of the TSN. In an actual scenario, a sending end of the TSN may be any TSN node in the TSN network on the 5G-TSN terminal gateway 10 side, and a receiving end of the TSN may be any TSN node in the TSN network connected by the UPF 23.

Fig. 6 shows a flow of a configuration method of a 5G-TSN terminating gateway, including steps S2110 to S21140.

S2110: the configuration module 159 of the 5G-TSN terminating gateway 10 obtains the stream creation requirements from the TSN port 13.

When the first TSN node 30 has a TSN data frame to be sent, it generates a stream creation requirement of the TSN frame and sends the stream creation requirement to the TSN port 13.

S2120: configuration module 159 of 5G-TSN terminating gateway 10 sends the flow creation requirement to CUC 50 over 5G network 20 using 5G port 11.

After this step, the CUC 50 further performs bandwidth matching on the flow creation requirement of the first TSN node 30 according to the bandwidths of the 5G port 11 and the UPF23, and sends the flow creation requirement after bandwidth matching to the CNC 60.

In some embodiments, the bandwidths of 5G port 11 and UPF23 are registered in PCF 25, respectively, and CUC 50 is obtained from PCF 25 via TSN-AF 27. In other embodiments, the bandwidth of 5G port 11 and UPF23 are registered in CUC 50.

S2130: the configuration module 159 of the 5G-TSN terminating gateway 10 receives the configuration data of the first scheduling policy sent by the CNC 60 over the 5G network 20 using the 5G port 11.

The CNC 60 formulates a first scheduling policy and a corresponding second scheduling policy according to the stream creation requirement collected by the CUC 50 and the topological structures of the 5G-TSN terminal gateway 10 and the UPF23 under the current 5G network 20, wherein the first scheduling policy is a scheduling policy for configuring the DS-TT module 15, and the second scheduling policy is a scheduling policy of the NW-TT 232 in the UPF 23.

In some embodiments, the configuration data of the first scheduling policy is data of a Netconf protocol; in other embodiments, the configuration data of the first scheduling policy is data of the SNMP protocol.

S2140: the configuration module 159 of the 5G-TSN terminating gateway 10 configures the first scheduling policy of the 5G-TSN terminating gateway 10 according to the configuration data.

The scheduling module 155 of the DS-TT module 15 of the 5G-TSN terminal gateway 10 schedules the first uplink data from the first TSN node according to the first scheduling policy.

After this step, the 5G-TSN terminating gateway 10 sends data according to a method of forwarding data from the TSN port 13 to the 5G port 11 in the first embodiment of the 5G-TSN terminating gateway.

In summary, in the second embodiment of the 5G-TSN terminating gateway, a configuration module is added to configure the first scheduling policy of the 5G-TSN terminating gateway, and cooperate with the second scheduling policy of the NW-TT of the UPF of the 5G core network, so as to further improve the certainty of data interaction between the TSN node at the terminal side and the TSN node at the network side through the 5G network; and other Ethernet ports and Ethernet interaction modules are added to realize the data interaction function between the 5G and TSN networks and other Ethernet.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in more detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention.

Claims

1. A5G-TSN terminal gateway is characterized by comprising a 5G port, a TSN port and a DS-TT module;

the 5G port is used for data interaction between the 5G-TSN terminal gateway and a 5G network, and the 5G network is connected with a second TSN network node through a UPF;

the TSN port is used for the interaction of data between the 5G-TSN terminal gateway and a first TSN network node, and the first TSN network node is connected with the 5G-TSN terminal gateway;

the DS-TT module is configured to implement data forwarding between the 5G port and the TSN port, where when forwarding the first uplink data to the 5G port, the first uplink data is mapped to a corresponding 5G transmission queue with 5G QoS, and when the 5G network quality is worse than a set threshold, the 5G network quality includes one or more of the following information: the bandwidth of the 5G cell, the quality of the 5G signal and the time delay of the 5G cell, and the first uplink data is data from the first TSN node.

2. The 5G-TSN end gateway of claim 1, wherein the DS-TT module performs enhanced forwarding when 5G network quality is worse than a set threshold, comprising: when any index of the 5G cell bandwidth, the 5G signal quality and the 5G cell time delay is worse than the corresponding first set threshold, and when the priority level of the TSN frame of the first uplink data is higher than the first set level, each TSN frame of the first uplink data is respectively copied into a plurality of TSN frames, and the TSN frames are placed into the 5G sending queue corresponding to the 5G port.

3. The 5G-TSN end gateway of claim 1, wherein the DS-TT module performs enhanced forwarding when 5G network quality is worse than a set threshold, comprising: when any index of the 5G cell bandwidth, the 5G signal quality and the 5G cell time delay is worse than a corresponding first set threshold, and when the priority level of the TSN frame of the first uplink data is higher than a first set level, the TSN stream of the first uplink data is copied into a plurality of streams.

4. The 5G-TSN terminal gateway of claim 2 or 3, wherein the DS-TT module performs enhanced forwarding when the 5G network quality is worse than a set threshold, further comprising: when any index of the 5G cell bandwidth, the 5G signal quality and the 5G cell time delay is worse than the respective second set threshold, a wireless channel meeting the corresponding 5G QoS requirement is also established in advance through the 5G port, and the channel is maintained until the first uplink data transmission is finished, wherein the second set threshold is worse than the first set threshold.

5. The 5G-TSN termination gateway of claim 1, wherein the DS-TT module maps the first uplink data to a 5G transmit queue of a different 5G QoS, comprising:

determining a corresponding 5QI in 5G QoS according to the priority level of a TSN frame of first uplink data, and determining a resource type, an internal priority level and a packet delay budget in the corresponding 5 QI;

and determining the ARP medium priority level in the 5G QoS according to the priority level of the TSN frame, and mapping the mark of whether the TSN frame can be preempted to the mark of whether the TSN frame can be preempted in the ARP in the 5G QoS.

6. The 5G-TSN terminating gateway of any one of claims 1 to 3 or 5, wherein the DS-TT module comprises a synchronization module, a queuing module, a scheduling module and a 5G forwarding module;

the synchronization module is used for realizing synchronization of the DS-TT module and a master clock node of a TSN network where a second TSN network node is located;

the queuing module is used for placing the first uplink data into different TSN sending queues according to the TSN frame marks of the first uplink data, and is also used for acquiring data from a 5G network from a TSN receiving queue and sending the data to the TSN port;

the scheduling module is used for acquiring first uplink data from a corresponding TSN sending queue according to a first scheduling strategy and sending the first uplink data to the 5G forwarding module;

the 5G forwarding module is used for mapping the first uplink data to the corresponding 5G sending queue according to the TSN frame mark and performing the enhanced forwarding according to the 5G network quality;

the 5G forwarding module is further configured to receive the first downlink data from the 5G port and send the first downlink data to the queuing module.

7. The 5G-TSN terminating gateway of claim 6, wherein the synchronization module is specifically configured to implement synchronization of the 5G-TSN terminating gateway and the TSN network in which the second TSN network node is located according to a bidirectional delay between the DS-TT module and a UPF of a 5G core network, and a bidirectional delay between a UPF of the 5G core network and a master clock node of the TSN network in which the second TSN network node is located; or

The synchronization module is specifically configured to implement synchronization of the 5G-TSN terminal gateway and the TSN network in which the second TSN network node is located according to a bidirectional delay of a master clock node of the TSN network in which the DS-TT module and the second TSN network node are located.

8. The 5G-TSN endpoint gateway of claim 6, wherein the queuing module is configured to, when queuing the first upstream data, place the first upstream data in a corresponding TSN transmit queue according to a priority of the TSN frame and/or whether preemption marking is possible and/or a target subnet ID, the target subnet ID corresponding to a node of the second TSN subnet.

9. The 5G-TSN terminating gateway according to any one of claims 1 to 3 or 5 or 7 to 8,

the 5G cell bandwidth comprises a 5G cell configuration bandwidth and is acquired from a 5G cell broadcast message through the 5G port; and/or

The quality of the 5G signal comprises the quality of a broadcast channel and/or the quality of a service channel of the 5G signal, and is acquired through the 5G port; and/or

The 5G cell latency includes a latency of the 5G port to a UPF of a 5G core network.

10. The 5G-TSN termination gateway of claim 1, wherein the DS-TT module further comprises a configuration module configured to receive configuration data of a first scheduling policy of the DS-TT module from a centralized network configurator through a 5G port, and to configure the first scheduling policy of the DS-TT module, the first scheduling policy corresponding to a second scheduling policy of a NW-TT of a 5G core network.

11. The 5G-TSN terminating gateway of claim 10, wherein the configuration module is further configured to send a stream creation requirement of the TSN port to a centralized subscriber configurator through the 5G port;

the configuration module is further configured to register the 5G-TSN terminating gateway online with a centralized network configurator through the 5G port.

12. The 5G-TSN termination gateway of claim 1, further comprising an Ethernet port and an Ethernet forwarding module;

the Ethernet port is used for realizing connection with other Ethernet networks, and the other Ethernet networks at least comprise an IP-V6 network;

the Ethernet forwarding module is used for realizing data forwarding between an Ethernet port and the 5G port or the TSN port.