CN114071768B

CN114071768B - Time synchronization method, device and storage medium

Info

Publication number: CN114071768B
Application number: CN202010791396.1A
Authority: CN
Inventors: 徐昊; 谌丽; 皮埃尔
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2020-08-07
Filing date: 2020-08-07
Publication date: 2024-04-09
Anticipated expiration: 2040-08-07
Also published as: CN114071768A

Abstract

The embodiment of the application provides a time synchronization method, a device and a storage medium, wherein the method comprises the following steps: when a terminal detects time sensitive network TSN specific information, preferentially transmitting the TSN specific information; the TSN specific information is TSN time synchronization information or data related to the TSN time synchronization information. The embodiment of the application meets the time delay requirement of the TSN network and the 5G network after being fused.

Description

Time synchronization method, device and storage medium

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a time synchronization method, apparatus, and storage medium.

Background

Time sensitive networks (Time Sensitive Networking, TSNs) refer to a set of protocol standards developed by the TSN task group in the IEEE802.1 working group. The standard defines a time sensitive mechanism for ethernet data transmission, adding certainty and reliability to the standard ethernet to ensure that the ethernet can provide a consistent and consistent level of service for critical data transmission.

In the current technical research, a technology of fusing 5G with TSN is proposed, and the technology will promote deep fusion of 5G with industrial TSN network, thereby creating a larger market. However, how to guarantee the strict latency requirement after the TSN and 5G are fused needs to be discussed.

Disclosure of Invention

The embodiment of the application provides a time synchronization method, a time synchronization device and a storage medium so as to meet strict time delay requirements after TSN and 5G are fused.

In a first aspect, an embodiment of the present application provides a time synchronization method, including:

when a terminal detects time sensitive network TSN specific information, preferentially transmitting the TSN specific information; wherein the TSN specific information includes TSN time synchronization information or data related to the TSN time synchronization information.

In a second aspect, embodiments of the present application provide a time synchronization apparatus, including a memory, a transceiver, and a processor:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

In a third aspect, an embodiment of the present application provides a time synchronization apparatus, including:

the transmission module is used for preferentially transmitting the TSN specific information when the terminal detects the TSN specific information of the time sensitive network; wherein the TSN specific information includes TSN time synchronization information or data related to the TSN time synchronization information.

In a fourth aspect, embodiments of the present application provide a processor-readable storage medium storing a computer program for causing the processor to perform the steps of the method according to the first aspect.

According to the time synchronization method, the time synchronization device and the storage medium, when the terminal detects the TSN specific information, the TSN specific information is preferentially transmitted, the TSN specific information is the TSN time synchronization information or data related to the TSN time synchronization information, and after the TSN and the 5G system are fused, the preferential transmission of the TSN uplink time synchronization information or the data in the 5G system is met, so that strict time delay requirements after the TSN and the 5G system are met, and the problem that in the prior art, when a TSN system master clock is located at a TSN terminal site, the system performance after the TSN and the 5G system are fused due to the fact that TSN uplink timing information or data preferential transmission cannot be guaranteed is solved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief description will be given below of the drawings that are needed in the embodiments or the prior art descriptions, and it is obvious that the drawings in the following description are some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a flowchart illustrating steps of a time synchronization method according to an embodiment of the present application;

FIG. 2 is one of the schematic diagrams of the first embodiment of the present application;

FIG. 3 is a second schematic view of the first embodiment of the present application;

FIG. 4 is a schematic diagram of a second embodiment of the present application;

FIG. 5 is a schematic view of a third embodiment of the present application;

FIG. 6 is a schematic diagram of a fourth embodiment of the present application;

FIG. 7 is a schematic view of a fifth embodiment of the present application;

FIG. 8 is a schematic view of a sixth embodiment of the present application;

FIG. 9 is a schematic view of a seventh embodiment of the present application;

fig. 10 is a schematic structural diagram of a time synchronization device in an embodiment of the present application;

fig. 11 is a block diagram of a time synchronization device in an embodiment of the present application.

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The 5G New air interface (NR) system mainly supports the following three types of services: enhanced broadband communications (enhanced Mobile Broadband, emmbb), mass machine type communications (massive Machine Type Communications, mctc), and high reliability low latency communications (Ultra-Reliable and Low Latency Communications, URLLC). For the URLLC service, the corresponding application scenarios are numerous, and the most widely discussed application scenarios currently include industrial internet of things (Industrial Internet of Things, IIoT), etc., where, in addition to low-latency high-reliability services (e.g., real-time control of a mechanical arm, etc.), large-bandwidth services (e.g., real-time video monitoring, etc.) need to be satisfied.

In 3gpp ts23.501, it is explicitly supported that the 5G system is integrated in the IEEE TSN network in a bridge manner. The following description is made to distinguish three scenes:

first scene: TSN master (GM) clock is located in a time-sensitive network working area (TSN Working Domain) accessed through a user plane function (User Plane Function, UPF) side, and is transferred to a time-sensitive network End Station (TSN End Station) through a TSN network timing information processing procedure under the condition that the terminal side accesses: when universal precision clock synchronization protocol (general precise time protocol, gPTP) messages reach the UPF side from TSNWorking Domain, the UPF side converter (Network-Side TSN Translator, NW-TT) sets an entry Timestamp (TSi) for each gPTP message; and then the UPF sends the modified gPTP message to the terminal through the data surface, and when the terminal receives the gPTP message containing the original TSN network timing information and the entry timestamp, the terminal converter (Device-Side TSN Translator, DS-TT) sets an exit timestamp (TSe) for the received gPTP message, and the difference between TSi and TSe is the residence time (contrast time) of the gPTP message in the 5G system.

The second scenario: the TSN GM clock is positioned in a TSN network timing information processing flow under the condition that the TSN End Station accessed through the terminal side is transferred to the TSN End Station and accessed through the UPF side: and distributing the uplink gPTP message to all TSN end stations of the UPFs (NW-TTs) by the TSN GM of the equipment side. The DS-TT forwards the modified uplink gPTP message (the DS-TT message processing operation is the same as that of the downlink NW-TT to the downlink gPTP message, for example, link delay between the DS-TT/terminal 1 and the TSN node (the last node) is added to the correction field) to the target UPF through the user plane; when NW-TT receives the gPTP message, NW-TT modifies the message (e.g., updates the correlation field) and sends TSN Working Domain to be accessed through the UPF side.

Third scenario: the TSN GM clock is positioned in a TSN network timing information processing flow under the condition that the TSN End Station accessed through the terminal side is transferred to the TSN End Station accessed through the terminal side: this procedure enables multiplexing the procedures of scenario 2 and scenario 1, with the specific difference that when the NW-TT/UPF receives a message, it performs local switching (local switching) and forwards the gPTP message to other TSN end stations accessed through the terminal side.

In summary, time-related information, such as gPTP messages, needs to be transferred in the TSN network to ensure that time synchronization is achieved in the TSN network, and because time errors between each hop may be accumulated, time synchronization of each hop needs to be accurately ensured.

In the current 5G mobile communication system, uplink and downlink transmissions are all scheduled and controlled by a base station. When the TSN system main clock is located at TSN Working domain, the priority transmission of TSN downlink timing information or data can be fully guaranteed through the inside of the base Station, but when the TSN system main clock is located at the TSN End Station, the priority transmission of TSN uplink timing information or data cannot be guaranteed by the existing method, so that the situation that the system performance after the TSN and 5GS systems are fused cannot meet actual requirements occurs.

Therefore, the embodiment of the application provides a time synchronization method, a device and a storage medium, so as to solve the problem that the prior method cannot ensure the prior transmission of TSN uplink timing information or data, and therefore the system performance after the fusion of the TSN and the 5GS system cannot meet the actual requirements.

The method and the device are based on the same application, and because the principles of solving the problems by the method and the device are similar, the implementation of the device and the method can be referred to each other, and the repetition is not repeated.

The technical scheme provided by the embodiment of the application can be suitable for various systems, in particular to a 5G system. For example, suitable systems may be global system for mobile communications (global system of mobile communication, GSM), code division multiple access (code division multiple access, CDMA), wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) universal packet Radio service (general packet Radio service, GPRS), long term evolution (long term evolution, LTE), LTE frequency division duplex (frequency division duplex, FDD), LTE time division duplex (time division duplex, TDD), long term evolution-advanced (long term evolution advanced, LTE-a), universal mobile system (universal mobile telecommunication system, UMTS), worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX), 5G New air interface (New Radio, NR), and the like. Terminal devices and network devices are included in these various systems. Core network parts such as evolved packet system (Evloved Packet System, EPS), 5G system (5 GS) etc. may also be included in the system.

The terminal device according to the embodiments of the present application may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing device connected to a wireless modem, etc. The names of the terminal devices may also be different in different systems, for example in a 5G system, the terminal devices may be referred to as User Equipment (UE). The wireless terminal device may communicate with one or more Core Networks (CNs) via a radio access Network (Radio Access Network, RAN), which may be mobile terminal devices such as mobile phones (or "cellular" phones) and computers with mobile terminal devices, e.g., portable, pocket, hand-held, computer-built-in or vehicle-mounted mobile devices that exchange voice and/or data with the radio access Network. Such as personal communication services (Personal Communication Service, PCS) phones, cordless phones, session initiation protocol (Session Initiated Protocol, SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital assistants (Personal Digital Assistant, PDAs), and the like. The wireless terminal device may also be referred to as a system, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile), remote station (remote station), access point (access point), remote terminal device (remote terminal), access terminal device (access terminal), user terminal device (user terminal), user agent (user agent), user equipment (user device), and the embodiments of the present application are not limited.

The network device according to the embodiment of the present application may be a base station, where the base station may include a plurality of cells for providing services for a terminal. A base station may also be called an access point or may be a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or other names, depending on the particular application. The network device may be operable to exchange received air frames with internet protocol (Internet Protocol, IP) packets as a router between the wireless terminal device and the rest of the access network, which may include an Internet Protocol (IP) communication network. The network device may also coordinate attribute management for the air interface. For example, the network device according to the embodiments of the present application may be a network device (Base Transceiver Station, BTS) in a global system for mobile communications (Global System for Mobile communications, GSM) or code division multiple access (Code Division Multiple Access, CDMA), a network device (NodeB) in a wideband code division multiple access (Wide-band Code Division Multiple Access, WCDMA), an evolved network device (evolutional Node B, eNB or e-NodeB) in a long term evolution (long term evolution, LTE) system, a 5G base station (gNB) in a 5G network architecture (next generation system), a home evolved base station (Home evolved Node B, heNB), a relay node (relay node), a home base station (femto), a pico base station (pico), and the like. In some network structures, the network device may include a Centralized Unit (CU) node and a Distributed Unit (DU) node, which may also be geographically separated.

The present application is specifically described below.

As shown in fig. 1, a flowchart of steps of a time synchronization method in an embodiment of the present application is shown, where the method includes the following steps:

step 101: when the terminal detects the TSN specific information, the TSN specific information is preferentially transmitted.

In addition, specifically, when the terminal detects the TSN specific information, if there is other information to be transmitted, the TSN specific information is preferentially transmitted, that is, the TSN specific information is transmitted before the other information. Of course, other information refers to non-TSN specific information, i.e., information other than TSN specific information.

Specifically, the TSN specific information is TSN time synchronization information or data related to the TSN time synchronization information.

The TSN time synchronization information may include a gPTP message, and specifically may include a timestamp (specifically, a 5G GM clock or a TSN GM clock), a delay from one hop on the TSN network, and so on.

The data related to the TSN time synchronization information may refer to data packets or data streams of other TSN networks that need to use the same transmission scheme as the TSN time synchronization information.

Therefore, when the terminal detects the TSN specific information, the problem that the system performance after the TSN and the 5G system are fused due to the fact that the prior art cannot ensure that the TSN and the 5G system are fused when the TSN system main clock is located at the TSN terminal station is solved by preferentially transmitting the TSN time synchronization information or data related to the TSN time synchronization information, so that the prior transmission of the TSN uplink time synchronization information or related data in the 5G system after the TSN and the 5G system are fused can be met, and the strict time delay requirement after the TSN and the 5G system are fused is further ensured.

Further, optionally, in the embodiment of the present application, the terminal detecting the TSN specific information may include any one of the following manners:

when the terminal detects that the current data packet carries the identification of TSN specific information, determining that the TSN specific information is detected;

when the terminal detects that the content of the current data packet contains TSN specific information, determining that the TSN specific information is detected;

and when the terminal detects that the QoS flow corresponding to the current data packet is the QoS flow to which the TSN specific information belongs, determining that the TSN specific information is detected.

I.e. the terminal may detect the TSN specific information by any of the above mentioned means.

Specifically, the TSN specific information may include an identifier identifiable at a Radio Access Network (RAN) side, so that when the terminal detects that the current data packet carries the identifier of the TSN specific information, it can determine that the TSN specific information is detected; or the terminal can also identify whether the type of the current data packet is a data packet of TSN specific information through deep analysis, namely, whether the content of the current data packet contains the TSN specific information is detected, so that whether the TSN specific information is detected is determined; alternatively, the higher layer may set the TSN specific information requiring the priority transmission as a separate QoS flow, and the terminal may determine whether the TSN specific information is detected by detecting whether the QoS flow corresponding to the current packet is the QoS flow to which the TSN specific information belongs.

Optionally, in the embodiment of the present application, when the TSN specific information is preferentially transmitted, any one of the following manners may be included:

in the first method, a packet to which TSN specific information belongs and other packets are allocated to the same Data Radio Bearer (DRB), and the packet to which TSN specific information belongs is preferentially transmitted when data in the DRB is allowed to be transmitted.

Specifically, the other data packets refer to data packets to which non-TSN specific information belongs, that is, data packets other than the data packets to which the TSN specific information belongs.

Specifically, when there are both a packet to which the TSN specific information belongs and other packets in the current DRB, the data flow in the existing manner performs subsequent processing in a first-in-first-out manner, that is, the packet to which the TSN specific information belongs will not be preferentially processed. In this embodiment, the data packet to which the TSN specific information belongs may be configured to be preferentially transmitted when the data in the DRB is allowed to be transmitted, so as to ensure that the TSN specific information allocated to the same DRB can be preferentially transmitted.

In the second mode, the data packet to which the TSN specific information belongs is mapped to a separate DRB, and data in the DRB corresponding to the data packet to which the TSN specific information belongs is preferentially transmitted.

Specifically, when the data packet to which the TSN specific information belongs is mapped to an individual DRB, priority transmission of data in the DRB may be configured, so that priority transmission of the TSN specific information is achieved.

Specifically, mapping the data packet to which the TSN specific information belongs to an independent DRB, and preferentially transmitting data in the DRB corresponding to the data packet to which the TSN specific information belongs may include any one of the following:

and firstly, performing target operation on a logic channel corresponding to the DRB so as to preferentially transmit the data in the DRB.

That is, the embodiment can perform the target operation on the logical channel corresponding to the DRB, so as to realize that the data in the logical channel corresponding to the DRB can be transmitted preferentially, and further realize that the data in the DRB is transmitted preferentially.

When the target operation is performed on the logical channel corresponding to the DRB, the following manner may be adopted:

ignoring the scheduling limit of a logic channel corresponding to the DRB so as to preferentially transmit the data in the DRB; or,

configuring the current uplink scheduling grant to be only used by a logic channel corresponding to the DRB so as to transmit data in the DRB preferentially; or,

and sequencing the logic channels to be transmitted currently according to the logic channel priority, and performing weighting operation on the logic channels corresponding to the DRB so as to transmit the data in the DRB preferentially.

That is, the present embodiment may configure the priority of the logical channel corresponding to the DRB to the highest priority in any of the above manners.

Specifically, the scheduling limitation on the logical channel corresponding to the DRB may include limitation on PUSCH duration, subcarrier spacing, cell limitation, etc., for example, the current uplink scheduling Grant (UL Grant) is limited only to be used by the logical channel with subcarrier spacing of 15 kHz; or the UL Grant is limited to the maximum PUSCH duration, etc., so that the current UL Grant can be preferentially used by the logical channel corresponding to the DRB. In addition, the scheduling limitation of the logic channel corresponding to the DRB is ignored, namely the scheduling limitation of the logic channel no longer plays a role in the logic channel corresponding to the DRB, the logic channel corresponding to the DRB can be not scheduled according to the scheduling limitation, and the scheduling transmission can be directly performed, so that the data in the DRB can be transmitted preferentially.

Furthermore, in particular, during Logical Channel Processing (LCP) restrictions, LCP restriction parameters may be introduced to ensure preferential transmission of TSN specific information. For example, the LCP restriction parameter may be an allownon-gPTP parameter, and when the value of the allownon-gPTP parameter is true (true), it indicates that the current uplink scheduling grant is only used by the logical channel corresponding to the DRB, so as to ensure that the data in the DRB can be preferentially transmitted.

Of course, the dynamic scheduling of the LCP limitation parameter may be performed by adding an indication to Downlink Control Information (DCI), or the Configuration Grant (CG) scheduling may be performed by adding an indication to Radio Resource Control (RRC) signaling, which is not particularly limited herein.

In addition, specifically, the weighting operation is performed on the logical channel corresponding to the DRB, so as to increase the weight value of the logical channel corresponding to the DRB, for example, the weight value of the logical channel corresponding to the DRB is increased to be higher than the weight values of other logical channels, so as to preferentially transmit the data in the DRB, thereby ensuring preferential transmission of the TSN specific information.

And secondly, mapping the data packet to which the TSN specific information belongs into the DRB with the highest priority of the logic channel so as to transmit the data in the DRB preferentially.

That is, in this manner, in the process of mapping the QoS flow to the DRB, the data packet to which the TSN specific information belongs may be directly mapped to the DRB having the highest priority of the logical channel, so that it is achieved that the data in the DRB can be preferentially transmitted, that is, the TSN specific information can be preferentially transmitted.

Thirdly, when the DRB mapped by the data packet to which the TSN specific information belongs corresponds to at least two Radio Link Control (RLC) entities, the data in the DRB is configured to be transmitted through the RLC entity having the highest priority of the logical channel, so as to preferentially transmit the data in the DRB.

That is, in this manner, in the process of mapping the QoS flow to the DRB, a data packet to which the TSN specific information belongs is mapped to a DRB having at least two RLC entities, where the DRB corresponds to each respective logical channel for each RLC entity, and at this time, data in the DRB may be configured to be transmitted through the RLC entity having the highest priority of the logical channels, so that priority transmission of data in the DRB is achieved, and priority transmission of the TSN specific information is ensured.

Fourth, when the TSN specific information is allocated to different QoS flows of different Protocol Data Unit (PDU) sessions, the QoS flows corresponding to the TSN specific information in different PDU sessions are mapped to the same DRB with the highest priority of the logical channel, so as to transmit the data in the DRB preferentially.

That is, in this manner, qoS flows corresponding to TSN specific information in different PDU sessions may be mapped to the same DRB having the highest priority of the logical channel, so as to ensure that the TSN specific information can be preferentially transmitted.

Therefore, the preferential transmission of the TSN specific information can be realized in any mode, so that the preferential transmission of the TSN uplink time information or data in the 5G system after the TSN and the 5G system are fused is met, and the strict time delay requirement after the TSN and the 5G system are fused is ensured.

The present application is specifically illustrated by the following examples.

First embodiment:

when a data packet to which the TSN specific information belongs and other data packets are allocated to the same DRB, the preferential transmission of the TSN specific information can be achieved by:

step 1, obtaining an identifier of whether the current data packet carries TSN specific information, where the identifier may be obtained through a Non-Access Stratum (NAS) layer or obtained by identifying the type of the data packet through deep parsing, and may be represented by a variable flag_tsn. For example, when the flag_tsn is 1, it indicates that the corresponding data packet carries TSN specific information, that is, carries TSN time synchronization information or data related to the TSN time synchronization information; and when the value is 0, the corresponding data packet does not carry TSN specific information, namely, does not carry time synchronization information or data related to the TSN time synchronization information.

In step 2, in the current DRB, there are corresponding data flows with flag_tsn value of 1 and flag_tsn value of 0, because in the existing manner, the data flows are subjected to subsequent processing in a first-in-first-out manner, as shown in fig. 2, and at this time, priority transmission of the data flow with flag_tsn value of 1 is limited. In view of this, the present application may perform special processing on the data stream with the flag_tsn value of 1, that is, allow to transmit the data packet to which the TSN specific information belongs preferentially when transmitting the data in the DRB, specifically refer to fig. 3, so that it may be ensured that, among the data packet to which the TSN specific information belongs and other data packets allocated to the same DRB, the data packet to which the TSN specific information belongs can be transmitted preferentially.

Second embodiment:

when a data packet to which the TSN specific information belongs is mapped into a separate DRB, the preferential transmission of the TSN specific information may be achieved by:

step 1, which is the same as step 1 in the first embodiment, will not be described here again.

Step 2, as shown in fig. 4, for a logical channel including flag_tsn with a value of 1, all scheduling restrictions on the logical channel will be ignored, thereby implementing direct transmission.

Third embodiment:

In the LCP limiting process, an LCP limiting parameter may be introduced to ensure preferential transmission of TSN specific information, and the LCP limiting parameter may be allownon-gPTP. For example, after the terminal receives the UL Grant, the value of the allownon-gPTP may be configured to be true, so as to indicate that the current Grant is only used by the logical channel with the flag_tsn value of 1, as shown in fig. 5.

Fourth embodiment:

when TSN specific information is allocated to a separate QoS flow, preferential transmission of the TSN specific information can be achieved by:

In step 1, the higher layer sets the TSN specific information that needs to be transmitted with priority as a separate QoS flow, and uses qos_tsn as an example for identification.

In the mapping process of the QoS flow to the DRB, as shown in fig. 6, in the architecture of the Service Data Adaptation Protocol (SDAP) layer, the Packet Data Convergence Protocol (PDCP) layer, the Medium Access Control (MAC) layer, and the air interface (UU), the QoS flow with qos_tsn is directly mapped to the DRB with the highest priority of the logical channel (the logical channel priority value is 1), that is, the data packet to which the TSN specific information belongs is mapped to the DRB with the highest priority of the logical channel, so as to ensure that the information of the time synchronization related data of the TSN network can be preferentially transmitted.

Fifth embodiment:

In step 2, in the mapping process of the QoS flow to the DRB, as shown in fig. 7, the QoS flow with qos_tsn is mapped to the DRB with at least two RLC entities, where the DRB corresponds to each RLC entity and has a priority of 1 (highest level) for RLC1 and 2 (next highest level) for RLC2 and corresponds to logical channel 1 (LCH 1), and in this embodiment, the configuration configures the data in the DRB to be transmitted through the RLC entity with the highest priority of the logical channel, that is, to be transmitted on LCH1, so as to ensure that the information of the time synchronization related data of the TSN network can be transmitted preferentially.

Sixth embodiment:

this embodiment corresponds to a scenario in which TSN specific information is allocated to different QoS flows of different PDU sessions, where the preferential transmission of the TSN specific information may be achieved by:

In step 2, in the mapping process of the QoS flows to the DRBs, as shown in fig. 8, qoS flows with qos_tsn in different PDU sessions are mapped to the same DRB with the highest priority of the logical channel (the priority of the logical channel is 1), so as to ensure that the information of the time synchronization related data of the TSN network can be transmitted preferentially.

Seventh embodiment:

And 2, after receiving the UL Grant, the terminal firstly performs scheduling restriction operation of the current UL Grant, and after the operation is completed, the current logic channels to be transmitted by the current terminal and containing data transmission are ordered according to the logic channel priority. As shown in fig. 9, in lchx_ab (e.g., lch2_21), x represents an LCH index, a represents a priority value of a logical channel, for example, a=1 represents that the priority is highest, the higher the value of a, the lower the priority, and of course, the lower the priority, the lower the value of a, that is, the priority setting mode is merely an example, and the embodiment is not limited; b represents whether the logical channel contains the TSN specific information, wherein b=1 represents that the logical channel contains the TSN specific information, and b=0 represents that the logical channel does not contain the TSN specific information; for lch1_10, lch2_21, and lch3_50, the order when ordering according to logical channel priority after performing scheduling restriction operation is lch2_21, lch1_10, lch3_50, i.e., lch2_21 has a priority greater than lch1_10, lch1_10 has a priority greater than lch3_50.

And 3, further weighting all the logic channels of the data transmission contained in the current terminal according to the flag_tsn in the step 1, for example, if the flag_tsn is 1, performing a weighting operation on the logic channel with the flag_tsn being 1, for example, the logic channel with the flag_tsn being 1 can be lifted by the weight value thereof, so that the priority value of the logic channel in the step 2 is ignored, and the priority of the logic channel is lifted, thereby ensuring that the information of the time synchronization related data of the TSN network can be preferentially transmitted.

Therefore, by means of any embodiment, the priority transmission of the TSN time synchronization information or the data related to the TSN time synchronization information can be achieved, the problem that in the prior art, when a TSN system main clock is located at a TSN terminal station, the system performance after the TSN and a 5G system are fused due to the fact that the priority transmission of TSN uplink timing information or data cannot be guaranteed at present is solved, and therefore the priority transmission of TSN uplink time synchronization information or related data in the 5G system after the TSN and the 5G system are fused can be met, and strict time delay requirements after the TSN and the 5G system are fused are guaranteed.

Fig. 10 is a schematic structural diagram of a time synchronization device according to an embodiment of the present application, including a memory 1020, a transceiver 1000, and a processor 1010.

Wherein in fig. 10, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 1010 and various circuits of memory represented by memory 1020, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. Transceiver 1000 may be a number of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium, including wireless channels, wired channels, optical cables, etc. The processor 1010 is responsible for managing the bus architecture and general processing, and the memory 1020 may store data used by the processor 1010 in performing operations.

The processor 1010 may be a Central Processing Unit (CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a Field programmable gate array (Field-Programmable Gate Array, FPGA) or a complex programmable logic device (Complex Programmable Logic Device, CPLD), or it may employ a multi-core architecture.

A memory 1020 for storing a computer program; a transceiver 1000 for transceiving data under the control of the processor; a processor 1010 for reading the computer program in the memory and performing the following operations:

Optionally, the terminal detects time sensitive network TSN specific information, including any one of the following:

when the terminal detects that the current data packet carries the identification of the TSN specific information, determining that the TSN specific information is detected;

when the terminal detects that the content of the current data packet contains the TSN specific information, determining that the TSN specific information is detected;

Optionally, the preferentially transmitting the TSN specific information includes:

distributing the data packet to which the TSN specific information belongs and other data packets into the same Data Radio Bearer (DRB), and preferentially transmitting the data packet to which the TSN specific information belongs when data in the DRB is allowed to be transmitted; or,

Mapping the data packet to which the TSN specific information belongs into an independent DRB, and preferentially transmitting data in the DRB corresponding to the data packet to which the TSN specific information belongs.

Optionally, mapping the data packet to which the TSN specific information belongs to an independent DRB, and preferentially transmitting data in the DRB corresponding to the data packet to which the TSN specific information belongs, where the mapping includes any one of the following:

performing target operation on the logical channel corresponding to the DRB so as to preferentially transmit the data in the DRB;

mapping the data packet to which the TSN specific information belongs into a DRB with the highest priority of a logic channel so as to preferentially transmit the data in the DRB;

when at least two Radio Link Control (RLC) entities correspond to a DRB mapped by a data packet to which the TSN specific information belongs, configuring data in the DRB to be transmitted through the RLC entity with the highest priority of a logic channel so as to transmit the data in the DRB preferentially;

when the TSN specific information is distributed to different QoS flows of PDU sessions of different protocol data units, the QoS flows corresponding to the TSN specific information in different PDU sessions are mapped to the same DRB with the highest priority of a logic channel, so that data in the DRB are transmitted preferentially.

Optionally, the performing the target operation on the logical channel corresponding to the DRB to preferentially transmit the data in the DRB includes:

neglecting the scheduling limit of the logic channel corresponding to the DRB so as to transmit the data in the DRB preferentially; or,

As can be seen from the above embodiments, when the terminal detects the TSN specific information, the time synchronization device preferentially transmits the TSN specific information, so that the preferential transmission of the TSN uplink time synchronization information or related data in the 5G system after the TSN is fused with the 5G system can be satisfied, thereby ensuring the strict time delay requirement after the TSN is fused with the 5G system.

Fig. 11 is a schematic structural diagram of a time synchronization device according to an embodiment of the present application. The device comprises:

a transmission module 1101, configured to, when a terminal detects time sensitive network TSN specific information, preferentially transmit the TSN specific information; wherein the TSN specific information includes TSN time synchronization information or data related to the TSN time synchronization information.

Optionally, on the basis of the above device, the transmission module 1101 includes any one of the following units:

a first determining unit, configured to determine that the TSN specific information is detected when the terminal detects that the identifier of the TSN specific information is carried in the current data packet;

a second determining unit, configured to determine that the TSN specific information is detected when the terminal detects that the content of the current data packet includes the TSN specific information;

and the third determining unit is used for determining that the TSN specific information is detected when the terminal detects that the QoS flow corresponding to the current data packet is the QoS flow to which the TSN specific information belongs.

Optionally, on the basis of the above device, the transmission module 1101 includes:

a first transmission unit, configured to allocate a data packet to which the TSN specific information belongs and other data packets to the same data radio bearer DRB, and when data in the DRB is allowed to be transmitted, preferentially transmit the data packet to which the TSN specific information belongs; or,

and the second transmission unit is used for mapping the data packet to which the TSN specific information belongs into an independent DRB and preferentially transmitting the data in the DRB corresponding to the data packet to which the TSN specific information belongs.

Optionally, on the basis of the above device, the second transmission unit includes any one of the following subunits:

a first transmission subunit, configured to perform a target operation on a logical channel corresponding to the DRB, so as to preferentially transmit data in the DRB;

a second transmission subunit, configured to map a data packet to which the TSN specific information belongs into a DRB having a highest priority of a logical channel, so as to preferentially transmit data in the DRB;

a third transmission subunit, configured to configure, when a DRB mapped by a data packet to which the TSN specific information belongs corresponds to at least two radio link control RLC entities, data in the DRB to be transmitted through an RLC entity having a highest priority of a logical channel, so as to preferentially transmit the data in the DRB;

and the fourth transmission subunit is used for mapping the QoS flows corresponding to the TSN specific information in different PDU sessions into the same DRB with the highest priority of the logic channel when the TSN specific information is distributed to different QoS flows of different PDU sessions so as to preferentially transmit the data in the DRB.

Optionally, on the basis of the above-mentioned device, the first transmission subunit is adapted to,

As can be seen from the foregoing embodiments, in the time synchronization apparatus, when the transmission module detects the TSN specific information, the TSN specific information is preferentially transmitted, so that the preferential transmission of the TSN uplink time synchronization information or related data in the 5G system after the TSN and the 5G system are fused can be satisfied, thereby ensuring the strict time delay requirement after the TSN and the 5G system are fused.

It should be noted that, in the embodiment of the present application, the division of the units is schematic, which is merely a logic function division, and other division manners may be implemented in actual practice. In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a processor-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution, in the form of a software product stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

It should be noted that, the above device provided in this embodiment of the present application can implement all the method steps implemented in the method embodiment and achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those of the method embodiment in this embodiment are omitted.

In another aspect, embodiments of the present application further provide a processor-readable storage medium storing a computer program for causing the processor to perform the method described in the above embodiments.

The processor-readable storage medium may be any available medium or data storage device that can be accessed by a processor, including, but not limited to, magnetic storage (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical storage (e.g., CD, DVD, BD, HVD, etc.), semiconductor storage (e.g., ROM, EPROM, EEPROM, nonvolatile storage (NAND FLASH), solid State Disk (SSD)), and the like.

As can be seen from the above embodiments, a processor-readable storage medium stores a computer program for causing the processor to execute the above-described time synchronization method. Therefore, the embodiment of the application realizes the preferential transmission of the TSN time synchronization information or the related data.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

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

It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.

Claims

1. A method of time synchronization, comprising:

when a terminal detects time sensitive network TSN specific information, preferentially transmitting the TSN specific information; wherein the TSN specific information comprises TSN time synchronization information or data related to the TSN time synchronization information;

the preferentially transmitting the TSN specific information includes: mapping the data packet to which the TSN specific information belongs into an independent DRB, and preferentially transmitting data in the DRB corresponding to the data packet to which the TSN specific information belongs;

The mapping the data packet to which the TSN specific information belongs to an independent DRB, and preferentially transmitting data in the DRB corresponding to the data packet to which the TSN specific information belongs, including any one of the following:

2. The time synchronization method according to claim 1, wherein the terminal detects time sensitive network TSN specific information, including any one of the following:

3. The time synchronization method according to claim 1, wherein the performing the target operation on the logical channel corresponding to the DRB to preferentially transmit the data in the DRB includes:

4. A time synchronization device, comprising a memory, a transceiver, and a processor:

5. The time synchronization device according to claim 4, wherein the terminal detects time sensitive network TSN specific information, including any one of the following:

6. The time synchronization apparatus of claim 4, wherein the performing the target operation on the logical channel corresponding to the DRB to preferentially transmit the data in the DRB comprises:

7. A time synchronization device, comprising:

the transmission module is used for preferentially transmitting the TSN specific information when the terminal detects the TSN specific information of the time sensitive network; wherein the TSN specific information comprises TSN time synchronization information or data related to the TSN time synchronization information;

the transmission module comprises: a second transmission unit, configured to map a data packet to which the TSN specific information belongs to an individual DRB, and preferentially transmit data in the DRB corresponding to the data packet to which the TSN specific information belongs;

the second transmission unit comprises any one of the following subunits:

8. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing a processor to execute the method of any one of claims 1 to 3.