WO2022000481A1

WO2022000481A1 - Wireless communication method and communication apparatus

Info

Publication number: WO2022000481A1
Application number: PCT/CN2020/100188
Authority: WO
Inventors: 徐小英; 范强; 酉春华
Original assignee: 华为技术有限公司
Priority date: 2020-07-03
Filing date: 2020-07-03
Publication date: 2022-01-06

Abstract

The present application provides a wireless communication method and a communication apparatus. The method comprises: a first terminal device determines first time information corresponding to a first time unit of a second terminal device, the first time unit being a time resource used by the second terminal device for communication; and after determining the first time information, the first terminal device sends to the second terminal device first information, comprising the first time information, so that the second terminal device obtains a system time according to the first information. A terminal device for implementing sidelink communication can obtain a system time.

Description

Wireless communication method and communication device

technical field

The present application relates to the field of communication, and more particularly, to a wireless communication method and communication device.

Background technique

As the main driving force of future communication development, mobile Internet and Internet of Things have a huge impact on people's living, working, leisure and transportation. At present, in order to achieve precise business control, high-precision time synchronization between terminal equipment and the network side is required in many fields such as industrial control, smart grid, and unmanned driving.

In the existing new radio (NR) and long term evolution (LTE) systems, the base station (BS) can send a message to the terminal equipment (user equipment) through a radio resource control (RRC) message. , UE) timing. Specifically, the timing information includes the reference time of the system internal clock corresponding to the boundary of the system radio frame as the reference point.

In industrial scenarios, in order to increase the coverage, a communication method is proposed to realize relay communication through the communication architecture of PC5 interface and Uu interface. The data of the communicating UE can be transmitted to the auxiliary UE through the PC5 interface, and the auxiliary UE then communicates with the base station through the auxiliary UE and the base station. The Uu interface between the UEs transmits the data of the communicating UE to the network. However, how to obtain a high-precision system time for the communication UE in the relay communication mode has become a problem to be solved by those skilled in the art.

SUMMARY OF THE INVENTION

The present application provides a wireless communication method and communication apparatus, so that a terminal device performing sidelink communication can obtain system time.

In a first aspect, a communication method is provided. The method can be executed by a first terminal device or executed by a module (such as a chip) configured in (or used for) the first terminal device. Hereinafter, the method is executed by the first terminal device. Take an example to illustrate.

The method includes: a first terminal device determines first time information corresponding to a first time unit, where the first time unit is a time resource used by the second terminal device for communication; the first terminal device sends to the second terminal device first information, where the first information includes the first time information.

According to the above solution, the first terminal device determines the time information corresponding to the first time unit of the second terminal device, and notifies the second terminal device, so that the second terminal device can obtain the system time.

Optionally, the unit of the first time information may be seconds, milliseconds or microseconds.

With reference to the first aspect, in some implementations of the first aspect, the first time information is time information corresponding to the start time or the end time of the first time unit.

With reference to the first aspect, in some implementations of the first aspect, the sending, by the first terminal device, the first time information to the second terminal device includes: the first terminal device sending the first time unit in multiple second time units. For the first information, the first time unit includes at least two of the second time units.

According to the above solution, the first terminal device repeatedly sends the first information in multiple second time units, and accordingly, the second terminal device can receive the first information in combination, which improves the robustness of the first information and increases the success of timing The probability.

With reference to the first aspect, in some implementations of the first aspect, the second time unit is a symbol, a time slot or a subframe.

With reference to the first aspect, in some implementations of the first aspect, the first terminal device determining the first time information corresponding to the first time unit includes: the first terminal device determining each of the multiple first time units first time information corresponding to the first time unit; and, the first terminal device sending the first information to the second terminal device, including: the first terminal device in each of the multiple first time units The time unit sends first information, where the first information includes the first time information corresponding to the first time unit where the first information is located.

According to the above solution, the first terminal device sends timing information (ie, first time information corresponding to multiple first time units) multiple times, which increases the probability of successful timing.

With reference to the first aspect, in some implementations of the first aspect, the first time unit is a time slot, a subframe or a radio frame.

In conjunction with the first aspect, in some implementations of the first aspect, the method further includes:

The first terminal device receives second information from the second terminal device, where the second information indicates that the second terminal device requests time information; and/or the first terminal device sends the second information to the network device.

According to the above solution, when the second terminal device requests time information, the first terminal device sends the first information to the second terminal device, and determines whether to send the time information according to the demand of the second terminal device, which can avoid unnecessary resources Occupy overhead.

With reference to the first aspect, in some implementations of the first aspect, the first information further includes the serial number of the first time unit.

According to the above solution, the first terminal device further indicates the number of the first time unit corresponding to the first time information in the first information, so that the first information can be sent on resources other than the first time unit, and the second terminal device can The first time unit corresponding to the first time information is determined according to the serial number of the first time unit, which improves the flexibility of timing.

With reference to the first aspect, in some implementations of the first aspect, the method further includes: the first terminal device receiving third information from the second terminal device, the third information indicating the boundary of the first time unit and/or the number of the first time unit.

According to the above solution, the first terminal device can obtain the boundary and/or the number of the first time unit of the second terminal device through the third information from the second terminal device.

With reference to the first aspect, in some implementations of the first aspect, the method further includes: the first terminal device sends fourth information to the network device, where the fourth information indicates that the first terminal device has the ability to send to other terminal devices time information capability; and/or, the first terminal device receives fifth information from a network device, the fifth information instructing the first terminal device to send time information to the second terminal device.

According to the above solution, the first terminal device can notify the network device whether it has the ability to provide timing to other terminal devices, and the first terminal device can send time information to the second terminal device when the network device authorizes it to provide timing to other terminal devices . In order to realize the scheduling and authorization of system resources by network equipment.

In a second aspect, a communication method is provided. The method can be executed by a second terminal device or executed by a module (such as a chip) configured (or used in) the second terminal device. The method is executed by the second terminal device below. Take an example to illustrate.

The method includes: the second terminal device receives first information from the first terminal device, where the first information includes first time information corresponding to a first time unit, where the first time unit is used by the second terminal device for communication time resource.

With reference to the second aspect, in some implementations of the second aspect, the method further includes: the second terminal device sends second information to the first terminal device, where the second information is used to instruct the second terminal device to request time information ;

With reference to the second aspect, in some implementations of the second aspect, the first time information is time information corresponding to the start time or the end time of the first time unit.

With reference to the second aspect, in some implementations of the second aspect, the receiving, by the second terminal device, the first information from the first terminal device includes: the second terminal device receiving information from the first terminal device in a plurality of second time units The first information of the first terminal device, the first time unit includes at least two of the second time units.

With reference to the second aspect, in some implementations of the second aspect, the second time unit is a symbol, a time slot or a subframe.

With reference to the second aspect, in some implementations of the second aspect, the receiving, by the second terminal device, the first information from the first terminal device includes: the second terminal device receiving information from the first terminal device in a plurality of first time units The first information of the first terminal device, the first information includes the first time information corresponding to the first time unit where the first information is located.

With reference to the second aspect, in some implementations of the second aspect, the first time unit is a time slot, a subframe or a radio frame.

With reference to the second aspect, in some implementations of the second aspect, the first information further includes the serial number of the first time unit.

With reference to the second aspect, in some implementations of the second aspect, the method further includes: the second terminal device sending third information to the first terminal device, where the third information indicates the boundary of the first time unit and the / or the number of the first time unit.

In a third aspect, a communication method is provided, which can be executed by a network device or a module (eg, a chip) configured (or used for) the network device.

The method includes: the network device receives second information from the first terminal device, the second information indicates that the second terminal device requests time information; the network device sends fifth information to the first terminal device, the fifth information indicates the first terminal device A terminal device sends time information to the second terminal device.

With reference to the third aspect, in some implementations of the third aspect, the method further includes:

The network device receives fourth information from the first terminal device, where the fourth information indicates that the first terminal device has the ability to send time information to other terminal devices.

In a fourth aspect, a communication method is provided. The method can be executed by a network device or configured in (or used for) a module (eg, a chip) of the network device. The following describes the method being executed by the network device as an example.

The method includes: the network device determines first time information corresponding to a first time unit, where the first time unit is a time resource used by the second terminal device for communication; the network device sends the first information to the first terminal device, The first information includes the serial number of the first time unit and the first time information, and the first terminal device provides a relay service for the second terminal device.

According to the above solution, the network device determines the first time information corresponding to the first time unit of the second terminal device, and notifies the second terminal device through the relay device (ie, the first terminal device), so that the second terminal device can obtain the system time .

With reference to the fourth aspect, in some implementations of the fourth aspect, the first time information is time information corresponding to the start time or the end time of the first time unit.

With reference to the fourth aspect, in some implementations of the fourth aspect, the method further includes: the network device receiving third information from the first terminal device, the third information indicating the boundary of the first time unit and/or or the number of the first time unit.

According to the above solution, the network device receives the third information from the first terminal device, so that the network device can determine the first time unit of the second terminal device according to the third information.

With reference to the fourth aspect, in some implementations of the fourth aspect, the method further includes: receiving, by the network device, fourth information from the first terminal device, where the fourth information indicates a first value, and the first value is The value is the difference between the number of the first time unit and the number of the second time unit corresponding to the same time point, wherein the second time unit is the time resource used by the network device for communication; the network device is based on the fourth information The first time unit is determined.

According to the above solution, the network device receives the fourth information from the first terminal device, so that the network device can determine the first time unit of the second terminal device according to the number difference in the fourth information and the number of the second time unit. With reference to the fourth aspect, in some implementations of the fourth aspect, the method further includes: the network device receiving fifth information from the first terminal device, the fifth information indicating that the synchronization source of the second terminal device is The global navigation satellite system GNSS or the network device, or the fifth information is used to indicate that the first time unit is determined by the second terminal device according to the coordinated universal time UTC; the network device determines the first time unit according to the fourth information time unit.

According to the above solution, the network device receives the fifth information from the first terminal device, so that the network device can determine the first time unit of the second terminal device according to the synchronization source of the second terminal device.

With reference to the fourth aspect, in some implementations of the fourth aspect, the method further includes: the network device receiving sixth information from the first terminal device, where the sixth information indicates that the second terminal device requests time information.

According to the above solution, the network device determines whether to provide time to the second terminal device according to the requirements of the second terminal device (whether to request time information).

In a fifth aspect, a communication method is provided. The method can be executed by a first terminal device or a module (such as a chip) configured in (or used for) the first terminal device. Hereinafter, the method is executed by the first terminal device. Take an example to illustrate.

The method includes: a first terminal device receiving first information from a network device, the first information indicating first time information corresponding to a first time unit, where the first time unit is a time resource used by the second terminal device for communication ; the first terminal device sends second information to the second terminal device, where the second information includes the first time information.

With reference to the fifth aspect, in some implementations of the fifth aspect, the first time information is time information corresponding to the start time or the end time of the first time unit.

With reference to the fifth aspect, in some implementations of the fifth aspect, the method further includes: the first terminal device receiving third information from the second terminal device, the third information indicating the boundary of the first time unit and/or the number of the first time unit.

With reference to the fifth aspect, in some implementations of the fifth aspect, the method further includes: the first terminal device sending the third information to the network device; or, the first terminal device sending the fourth information to the network device information, the fourth information indicates a first value, the first value is the difference between the number of the first time unit and the number of the second time unit corresponding to the same time point, wherein the second time unit is the network The time resource that the device uses for communication.

With reference to the fifth aspect, in some implementations of the fifth aspect, the method further includes: the first terminal device receiving fifth information from the second terminal device, the fifth information indicating the synchronization source of the second terminal device It is the global navigation satellite system GNSS or the network device, or, the fifth information indicates that the first time unit can be determined by the second terminal device according to the coordinated universal time UTC; the first terminal device sends the first time unit to the network device. Five information.

With reference to the fifth aspect, in some implementations of the fifth aspect, the method further includes: the first terminal device receiving sixth information from the second terminal device, where the sixth information indicates the time requested by the second terminal device information; the first terminal device sends the sixth information to the network device.

In a sixth aspect, a communication method is provided, the method can be executed by a second terminal device or a module (such as a chip) configured in (or used for) the second terminal device, and the method is executed by the second terminal device below. Take an example to illustrate.

The method includes: the second terminal device sends second information to the first terminal device, the second information indicates that the second terminal device requests time information; the second terminal device receives the first information from the first terminal device, the The first information indicates the first time information corresponding to the first time unit, where the first time unit is a time resource used by the second terminal device for communication.

With reference to the sixth aspect, in some implementations of the sixth aspect, the first time information is time information corresponding to the start time or the end time of the first time unit.

With reference to the sixth aspect, in some implementations of the sixth aspect, the method further includes: the second terminal device sending third information to the first terminal device, where the third information indicates the boundary of the first time unit and the / or the number of the first time unit.

With reference to the sixth aspect, in some implementations of the sixth aspect, the method further includes: the second terminal device sending fifth information to the first terminal device, where the fifth information indicates a synchronization source of the second terminal device is the global navigation satellite system GNSS or the network device, or the fifth information indicates that the first time unit is determined by the second terminal device according to the coordinated universal time UTC;

With reference to the sixth aspect, in some implementations of the sixth aspect, the method further includes: the second terminal device sending sixth information to the second terminal device, where the sixth information indicates that the second terminal device requests time information .

In a seventh aspect, a communication apparatus is provided, including a processor. The processor is coupled to the memory and can be used to execute instructions in the memory to implement the above-mentioned first aspect or the fifth aspect, and the method in any of the possible implementations of the first aspect or the fifth aspect. Optionally, the communication device further includes a memory. Optionally, the communication device further includes a communication interface, and the processor is coupled to the communication interface.

In an implementation manner, the communication apparatus is a first terminal device. When the communication device is the first terminal device, the communication interface may be a transceiver, or an input/output interface.

In another implementation manner, the communication apparatus is a chip configured in the first terminal device. When the communication device is a chip configured in the first terminal device, the communication interface may be an input/output interface.

Optionally, the transceiver may be a transceiver circuit. Optionally, the input/output interface may be an input/output circuit.

In an eighth aspect, a communication apparatus is provided, including a processor. The processor is coupled to the memory, and can be used to execute instructions in the memory, so as to implement the above-mentioned second aspect or the sixth aspect, and the method in any possible implementation manner of the sixth aspect or the fifth aspect. Optionally, the communication device further includes a memory. Optionally, the communication device further includes a communication interface, and the processor is coupled to the communication interface.

In an implementation manner, the communication apparatus is a second terminal device. When the communication device is the second terminal device, the communication interface may be a transceiver, or an input/output interface.

In another implementation manner, the communication apparatus is a chip configured in the second terminal device. When the communication device is a chip configured in the second terminal device, the communication interface may be an input/output interface.

In a ninth aspect, a communication apparatus is provided, including a processor. The processor is coupled to the memory and can be used to execute instructions in the memory to implement the method of the third aspect or the fourth aspect and any possible implementation manner of the third aspect or the fourth aspect. Optionally, the communication device further includes a memory. Optionally, the communication device further includes a communication interface, and the processor is coupled to the communication interface.

In one implementation, the communication apparatus is a network device. When the communication device is a network device, the communication interface may be a transceiver, or an input/output interface.

In another implementation manner, the communication device is a chip configured in a network device. When the communication device is a chip configured in a network device, the communication interface may be an input/output interface.

In a tenth aspect, a processor is provided, comprising: an input circuit, an output circuit and a processing circuit. The processing circuit is configured to receive a signal through the input circuit and transmit a signal through the output circuit, so that the processor executes the method of the first aspect to the sixth aspect and any one of the possible implementations of the first aspect to the sixth aspect .

In the specific implementation process, the above-mentioned processor may be one or more chips, the input circuit may be input pins, the output circuit may be output pins, and the processing circuit may be transistors, gate circuits, flip-flops and various logic circuits, etc. . The input signal received by the input circuit may be received and input by, for example, but not limited to, a receiver, the signal output by the output circuit may be, for example, but not limited to, output to and transmitted by a transmitter, and the input circuit and output The circuit can be the same circuit that acts as an input circuit and an output circuit at different times. The embodiments of the present application do not limit the specific implementation manners of the processor and various circuits.

In an eleventh aspect, a processing apparatus is provided, including a processor and a memory. The processor is configured to read the instructions stored in the memory, and can receive signals through the receiver and transmit signals through the transmitter, so as to execute the first aspect to the sixth aspect and any possible implementation manner of the first aspect to the sixth aspect method in .

Optionally, the processor is one or more, and the memory is one or more.

Alternatively, the memory may be integrated with the processor, or the memory may be provided separately from the processor.

In the specific implementation process, the memory can be a non-transitory memory, such as a read only memory (ROM), which can be integrated with the processor on the same chip, or can be separately set in different On the chip, the embodiment of the present application does not limit the type of the memory and the setting manner of the memory and the processor.

It should be understood that the relevant data interaction process, such as sending indication information, may be a process of outputting indication information from the processor, and receiving capability information may be a process of receiving input capability information by the processor. Specifically, the data output by the processor can be output to the transmitter, and the input data received by the processor can be from the receiver. Among them, the transmitter and the receiver may be collectively referred to as a transceiver.

The processing device in the eleventh aspect above may be one or more chips. The processor in the processing device may be implemented by hardware or by software. When implemented by hardware, the processor can be a logic circuit, an integrated circuit, etc.; when implemented by software, the processor can be a general-purpose processor, implemented by reading software codes stored in a memory, which can Integrated in the processor, can be located outside the processor, independent existence.

A twelfth aspect provides a computer program product, the computer program product comprising: a computer program (also referred to as code, or instructions), which, when the computer program is executed, causes the computer to execute the above-mentioned first to sixth aspects Aspects and methods of any possible implementations of the first to sixth aspects.

In a thirteenth aspect, a computer-readable medium is provided, the computer-readable medium stores a computer program (also referred to as code, or instruction), when it is run on a computer, causing the computer to execute the above-mentioned first to sixth aspects. The method in the sixth aspect and any possible implementation manner of the first aspect to the sixth aspect.

A fourteenth aspect provides a communication system, including the aforementioned first terminal device and the second terminal device, or, including the aforementioned first terminal device, the second terminal device, and the network device.

Description of drawings

FIG. 1 is a schematic diagram of a wireless communication system provided by an embodiment of the present application.

FIG. 2 is a schematic diagram of different types of synchronization sources in sidelink communication provided by an embodiment of the present application.

FIG. 3 is a schematic diagram of subframe alignment of a terminal device for sidelink communication according to an embodiment of the present application.

FIG. 4 is a schematic flowchart of a wireless communication method provided by an embodiment of the present application.

FIG. 5 is a schematic diagram of a wireless communication method provided by an embodiment of the present application.

FIG. 6 is a schematic diagram of a wireless communication method provided by an embodiment of the present application.

FIG. 7 is a schematic diagram of a wireless communication method provided by an embodiment of the present application.

FIG. 8 is a flowchart of a wireless communication method provided by an embodiment of the present application.

FIG. 9 is a flowchart of a wireless communication method provided by an embodiment of the present application.

FIG. 10 is a schematic structural diagram of a possible communication apparatus provided by an embodiment of the present application.

FIG. 11 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.

FIG. 12 is a schematic structural diagram of a network device provided by an embodiment of the present application.

detailed description

The technical solutions in the present application will be described below with reference to the accompanying drawings.

The technical solutions of the embodiments of the present application can be applied to various communication systems, for example: long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (time division duplex) , TDD), universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, fifth generation (5th generation, 5G) system or new radio (new radio) , NR) system, vehicle-to-X V2X, where V2X can include vehicle-to-network (V2N), vehicle-to-vehicle (V2V), vehicle-to-infrastructure ( Vehicle to infrastructure (V2I), vehicle to pedestrian (V2P), etc., Long Term Evolution-Vehicle (LTE-V), Internet of Vehicles, Machine Type Communication (MTC), Internet of things (IoT), Long Term Evolution (LTE-Machine, LTE-M), machine to machine (M2M), non-terrestrial network (NTN) systems or Other communication systems evolved in the future, etc.

FIG. 1 is a schematic diagram of a wireless communication system 100 provided by an embodiment of the present application.

A communication system provided by an embodiment of the present application may include at least two terminal devices, such as

terminal devices

102, 103, 104, and 105 in the communication system 100 shown in FIG. 1 . A communication system provided by this embodiment of the present application may further include at least one network device, such as the network device 101 in the wireless communication system 100 shown in FIG. 1 . A direct communication link may be established between the at least two terminal devices, and the direct communication link between the terminal devices is also referred to as a side link or a side chain (sidelink, SL). At least one of the two terminal devices that establish the side link can communicate with the network device through the Uu interface. The interface is transmitted to the network, which is not limited in this application.

The terminal equipment in the embodiments of the present application may also be referred to as user equipment (user equipment, UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal , wireless communication device, user agent or user device. The terminal device in the embodiment of the present application may be a mobile phone, a tablet computer, a computer with a wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless device in industrial control Terminal, wireless terminal in unmanned driving, wireless terminal in remote medical, wireless terminal in smart grid, wireless terminal in transportation safety, wireless terminal in smart city, wireless terminal in smart home, cellular Telephones, cordless telephones, session initiation protocol (SIP) telephones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication capabilities, computing Equipment or other processing equipment connected to a wireless modem, in-vehicle equipment, in-vehicle communication devices, in-vehicle communication processing chips, wearable devices, terminal equipment in 5G networks or future evolution of public land mobile networks (PLMN) terminal equipment, etc.

Among them, wearable devices can also be called wearable smart devices, which is a general term for the intelligent design of daily wear and the development of wearable devices using wearable technology, such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include full-featured, large-scale, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, which needs to cooperate with other devices such as smart phones. Use, such as all kinds of smart bracelets, smart jewelry, etc. for physical sign monitoring.

In addition, the terminal device may also be a terminal device in an internet of things (Internet of things, IoT) system. IoT is an important part of the development of information technology in the future. Its main technical feature is to connect items to the network through communication technology, so as to realize the intelligent network of human-machine interconnection and interconnection of things.

It should be understood that the present application does not limit the specific form of the terminal device.

The technical solutions in the embodiments of the present application can also be applied to network devices. The network equipment includes but is not limited to: evolved Node B (evolved Node B, eNB), radio network controller (radio network controller, RNC), roadside unit (road side unit, RSU), node B (node B, NB) ), base station controller (BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved nodeB, or home node B, HNB), baseband unit (baseband unit, BBU), Wireless fidelity (wireless fidelity, WIFI) system access point (access point, AP), wireless relay node, wireless backhaul node, transmission point (transmission point, TP) or transmission and reception point (transmission and reception point, TRP), etc., it can also be a gNB or a transmission point (TRP or TP) in a 5G (such as NR) system, or, one or a group (including multiple antenna panels) antenna panels of a base station in a 5G system, or, also It can be a network node that constitutes a gNB or a transmission point, such as a baseband unit (BBU), or a distributed unit (DU), etc. The network device can also provide communication services or communication control for terminal devices in the Internet of Vehicles. network side device.

The network equipment provides communication services for the terminal equipment in the cell, and the terminal equipment in the cell communicates with the network equipment through transmission resources (for example, frequency domain resources, time domain resources, etc.) allocated by the network equipment, and the cell may belong to a macro base station (for example, , macro eNB or macro gNB, etc.).

There are different types of synchronization sources in sidelink communication. The terminal device can use the global navigation satellite system (GNSS) as the synchronization source, and determine the radio frame and frame number according to GNSS, which are called direct frame and direct frame number. (direct frame number, DFN); the terminal device can also use the network device as the synchronization source, and obtain the system frame and system frame number (SFN) of the network device by synchronizing with the network device; the terminal device can also use other terminal devices. As the synchronization reference source, the radio frame number of the terminal device at this time is the same as the radio frame number of the terminal device serving as the synchronization source. Exemplarily, two terminal devices performing sidelink communication can communicate if the subframe boundaries are aligned without sensing the radio frame number and subframe number of the other party. The radio frame numbers of the two end devices may be different.

For example, as shown in FIG. 2 , a terminal device (eg, terminal device 203 ) can synchronize with the network device 201 (eg, gNB or eNB) as a synchronization source to obtain the SFN of the system frame of the network device, as shown in FIG. 3 shown in (a). The terminal device (for example, the terminal device 204) can also use the GNSS device as the synchronization source, determine the direct frame through the coordinated universal time (UTC) indicated by the GNSS device, and obtain the corresponding DFN, as shown in (b) in Figure 3. Show. The terminal device 203 may provide a relay service for the communication between the terminal device 204 and the network device 201 . When the terminal device 203 and the terminal device 204 perform sidelink communication, the subframe boundaries are aligned, but the frame numbers of the radio frames corresponding to the same time may be different. The frame number SFN of the system frame) is 0, and the frame number DFN of the radio frame determined by the terminal device 204 (ie, the direct frame determined by the UTC time) is 1023. In the relay communication scenario, how to obtain the system time of the network by the terminal device (for example, the terminal device 204 ) that communicates with the network device through the relay device becomes a problem to be solved.

The present application provides a wireless communication method, so that a terminal device that communicates with a network device through a relay device can acquire the system time.

The wireless communication method provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

FIG. 4 is a schematic flowchart of a wireless communication method provided by an embodiment of the present application, including S410, S420, and S430. Wherein, S410 is optional, and the embodiment of the present application does not limit the execution order of S410, S420, and S430.

S410, the network device performs time synchronization with the first terminal device, and in S410, the network device provides time for the first terminal device.

The first terminal device establishes a wireless communication connection with the network device, and the first terminal device performs time synchronization with the network device to obtain the system frame and the system frame number of the network device. The first terminal device acquires the system time through timing information of the network device, for example, the network device sends an RRC message to the first terminal device, where the RRC message includes time information corresponding to the reference system frame. Optionally, the RRC message may be a system information block (system information block, SIB) broadcast by the network device, the reference system frame may be a system frame that is closest in time to the end time of the system message window, and the time information It may be the time corresponding to the start or end time corresponding to the reference system frame, but this is not limited in this application. Optionally, the RRC message may be dedicated signaling sent by the network device to the first terminal device, and the RRC message carries the reference system frame number and time information corresponding to the reference system frame.

In addition, the first terminal device also establishes a sidelink communication connection with the second terminal device, and the sequence of establishing the connection between the first terminal device and the network device and establishing the connection with the second terminal device is not limited in this application. The first terminal device is aligned with the subframe boundary of the second terminal device, and the first terminal device can provide relay communication services for the network device and the second terminal device. For example, the first terminal device The data of the terminal device is forwarded to the network device through the Uu interface, or the first terminal device forwards the data received on the Uu interface from the network device to the second terminal device through the PC5 interface, where the data may include control plane signaling and/or user plane data. However, this application does not limit this.

S420: The first terminal device determines first time information corresponding to the first time unit.

The first time unit is a time resource used by the second terminal device for communication, and optionally, the first time unit may be a time slot, a subframe or a radio frame.

As an example and not limitation, the first time information is the system time corresponding to the first time unit, and the unit of the first time information may be seconds, milliseconds, or microseconds.

As an example and not limitation, the first time information is the system time corresponding to the start time or the end time of the first time unit.

In an embodiment, the first terminal device determines that time information corresponding to a subframe boundary is time information corresponding to a subframe boundary of the second terminal device, that is, the first time information, wherein the first time unit is a subframe. . Alternatively, the first terminal device may determine a time slot boundary and time information corresponding to the time slot boundary, that is, first time information, where the first time unit is a time slot.

Since the subframe boundaries of the first terminal device and the second terminal device are aligned, the subframe boundary of the first terminal device is the subframe boundary of the second terminal device, and the time information corresponding to a subframe boundary determined by the first terminal device is Time information corresponding to a subframe boundary of the second terminal device. Alternatively, after the subframe boundaries of the first terminal device and the second terminal device are aligned, the boundaries of the time slots in the subframe can be determined. For example, a subframe includes two time slots, and each time slot contains the same number of symbols, then The first terminal device may determine a time slot boundary and time information corresponding to the time slot boundary, but the present application is not limited thereto.

In another implementation manner, the first terminal device receives third information from the second terminal device, where the third information indicates the boundary of the first time unit and/or the number of the first time unit.

For example, the third information indicates a boundary of a radio frame (ie, the first time unit is a radio frame) of the second terminal device, for example, the boundary may be a start time or an end time of the radio frame. For example, the third information may indicate a subframe, indicating that the end moment of the subframe is the end moment of a radio frame of the second terminal device, or the third information may indicate a subframe, indicating that the start moment of the subframe is the second terminal device. At the start time of a radio frame of the terminal device, after the first terminal device receives the third information, since the first terminal device and the second terminal device have reached a consensus on the subframe boundary, the first terminal device can The three information determines the boundary of the radio frame, but the present application is not limited thereto.

For another example, the third information indicates a subframe number of a subframe in a radio frame of the second terminal device, the subframe number indicates a position of the subframe in a radio frame, and the number of subframes in a radio frame is one. Therefore, the first terminal device determines the end time of the radio frame of the second terminal device according to the number of subframes in the radio frame. As shown in FIG. 3 , the terminal device 204 may be the second terminal device, and the terminal device 203 may be the second terminal device. is the first terminal device, the terminal device 204 sends the third information in the subframe whose subframe number is 3 in the radio frame whose DFN is 0, and the third information indicates that the subframe where the third information is located is the second terminal A subframe whose subframe number is 3 in a radio frame of the device, correspondingly, the terminal device 203 receives the third information in a subframe whose subframe number is 4 in a radio frame whose SFN1 is 1, according to the third information It is determined that the subframe whose subframe number is 4 is the subframe number 3 in the radio frame of the second terminal device, and each preset radio frame includes 10 subframes and the subframe numbers are 0 to 9, then the first The terminal device may determine the boundary of the radio frame of the second terminal device where the subframe whose subframe number is 3 is located. For example, the start boundary may be the start time of the third subframe before the subframe, that is, the first terminal The start time of subframe 1 in the radio frame in which the SFN of the device is 1. The termination boundary may be the termination time of the sixth subframe after the subframe, that is, the termination time of subframe 0 in the radio frame in which the SFN of the first terminal device is 2. After the first terminal device determines the boundary of the radio frame, the boundary of each radio frame of the second terminal device can be determined according to the length of the radio frame. Further, the first terminal device can determine the time information corresponding to a radio frame of the second terminal device. For example, the first terminal device can determine that the time information corresponding to the termination time of subframe 0 in the radio frame with SFN of 2 is the first terminal device. Time information corresponding to one radio frame of two terminal devices, wherein the length of the radio frame may be specified by the protocol. For example, the protocol specifies that the length of one radio frame is 10ms, but the present application is not limited to this.

For another example, the third information indicates the boundary of a radio frame of the second terminal device and the frame number of the radio frame. For example, if the third information indicates the frame number A of a subframe and a radio frame, the subframe indicated by the third information indicates that the end time of the subframe is the end time of the radio frame with the radio frame frame number A of the second terminal device Or, the subframe indicated by the third information indicates that the start time of the subframe is the start time of the radio frame whose radio frame frame number of the second terminal device is A. The manner in which the third information indicates one subframe may be implicit. For example, the subframe where the second terminal device receives the third information is the indicated subframe. The first terminal device can determine the radio frame A of the second terminal device according to the third information, and determine the division of the radio frame of the second terminal device and the frame number (ie number) of each radio frame according to the length of the radio frame, so that Time information corresponding to the boundary of a radio frame can be determined. Wherein, the serial number of the first time unit may be referred to as the identifier, serial number, etc. of the first time unit, which is not limited in this application.

S430: The first terminal device sends first information to the second terminal device, where the first information includes the first time information.

Correspondingly, the second terminal device receives the first information from the first terminal device.

In an implementation manner, the first terminal device sends the first information in a first time unit, and after receiving the first information in the second terminal device, it determines that the first time information in the first information is the The system time corresponding to the first time unit where the first information is located.

For example, as shown in FIG. 3 , the terminal device 203 is the first terminal device, and the terminal device 204 is the second terminal device. For example, the first time unit is a radio frame, and the preset first time information is the start boundary of a radio frame the corresponding system time. The terminal device 203 determines the boundary of the radio frame of the terminal device 204 in S420. For example, the terminal device 204 determines that the start time of subframe 1 in the radio frame where the SFN of the terminal device 203 is 2 is the start time of the subframe 1 of the terminal device 204. The starting boundary of a radio frame, it can be determined that the radio frame of the terminal device 204 includes subframes 1 to 9 in the radio frame with an SFN of 2 of the terminal device 203 and subframes in the radio frame with an SFN of 3 0. The terminal device 204 may determine that the system time (ie, the first time information) corresponding to the start time of the subframe 1 in the radio frame with the SFN of 2 is 10 hours, 8 minutes, and 9 seconds. The first information is sent in the radio frame (for example, sent in subframe 5 of the radio frame with SFN of 2), where the first information includes the first time information. Correspondingly, after receiving the first information in subframe 4 of the radio frame in which the DFN of the terminal device is 1, the terminal device 204 determines that the first time information in the first information is the time of the radio frame in which the DFN is 1. The system time corresponding to the starting boundary is obtained, thereby obtaining the system time of the network, but the present application is not limited to this.

Optionally, the first terminal device sends the first information in multiple second time units, where the first time units include at least two second time units.

For example, as shown in FIG. 5 , the first time unit includes 10 second time units, the first terminal device determines the first time information corresponding to the start time T of the first time unit, and the first three time units in the first time unit The second time unit is repeatedly sent including the first information, and each first information includes the first time information corresponding to the start time T. The second terminal device receives the first information in the first three second time units of the first time unit, but the present application is not limited thereto.

According to the above solution, by sending the first information in multiple second time units, the second terminal device may obtain the combined gain of the first time information, which improves the reliability of timing.

It should be noted that FIG. 5 is used as an example to send the first information in three consecutive second time units. In the specific implementation, the first information may also be sent in multiple discontinuous second time units. In the case where the terminal device and the second terminal device reach an agreement on the second time unit that carries the first information, the present application does not limit the second time unit that carries the first information.

As an example and not limitation, in the case that the first time unit is a radio frame, the second time unit may be a subframe, a time slot or a symbol. Alternatively, when the first time unit is a subframe, the second time unit may be a slot or a symbol. Still alternatively, when the first time unit is a time slot, the second time unit may be a symbol.

Optionally, the first terminal device sends the first information in multiple first time units, where the first information includes first time information corresponding to the first time unit where the first information is located.

For example, as shown in FIG. 6 , the first terminal device determines the first time information A corresponding to the termination time of the first time unit A and the first time information B corresponding to the termination time of the first time unit B, in the first time unit A Send the first information A, where the first information A includes the first time information A, and send the first information B in the first time unit B, where the first information B includes the first time information B. Correspondingly, the second terminal device receives the first information A and the first information B in the first time unit A and the first time unit B, respectively, but the present application is not limited thereto. According to the above solution, sending the first information on multiple first time units can increase the probability of successful timing.

In another implementation manner, the first information further includes the number of the first time unit, and the first terminal device may send the first information in the first time unit, or may send the first information on a time resource other than the first time unit. information, the second terminal device determines the first time unit according to the serial number of the first time unit in the first information, and then determines the time information corresponding to the first time unit according to the first time information in the first information.

For example, the first time unit is the radio frame A of the second terminal device. The first terminal device can determine the radio frame and radio frame number of the second terminal device through the third information from the second terminal device. The first terminal device can determine the radio frame and radio frame number of the second terminal device. The first time information A corresponding to the radio frame A is determined, and the first terminal device may send the first information including the first time information A and the serial number of the radio frame A in the radio frame B. After receiving the first information in the radio frame B, the second terminal device determines the radio frame A according to the number of the radio frame in the first information, and determines the time corresponding to the radio frame A according to the first time information A in the first information information. In addition, the first time information may also be sent in the radio frame A, which is not limited in this application.

In addition, there is a propagation delay in communication. For example, as shown in FIG. 7 , the first terminal device determines that the time information corresponding to the start time of the first time unit is T1, and the first terminal device sends the first information in the first time unit. When the first information is propagated to the second terminal device, the start time of the first time unit is T2, where T2-T1=Td, and Td is the propagation delay. That is to say, T2 is the time corresponding to the start time of the first time unit understood by the second terminal device.

Optionally, the first terminal device determines that the first time unit is a time corresponding to the first time unit understood by the second terminal device, that is, T2. That is to say, after the first terminal device determines that the time information corresponding to the first time unit understood by itself is T1, it performs delay compensation according to the propagation delay Td to determine that the time information corresponding to the first time unit understood by the second terminal device is T1 +Td, namely T2, the first time information included in the first information is T2.

Optionally, the first time information sent by the first terminal device is time information after delay compensation, and the first time information is carried on the first information. Optionally, in addition to the above-mentioned first time information, the first information further includes indication information A, where the indication information A is used to indicate whether the first time information is time information after delay compensation. When the indication information A indicates that the first time information is time information after delay compensation, after receiving the first information, the second terminal device can determine that the first time information in the first information is understood by the second terminal device The time information corresponding to the first time unit of .

Optionally, the first time information sent by the first terminal device is time information without delay compensation, and the first time information is carried on the first information. Optionally, in addition to the above-mentioned first time information, the first information further includes indication information B, where the indication information B is used to indicate whether the first time information is time information without delay compensation. When the indication information B indicates that the first time information is time information without delay compensation, the second terminal device performs delay compensation on the first time information after receiving the first information, and determines the first time information understood by the second terminal device. Time information corresponding to a time unit. Exemplarily, when the second terminal device performs delay compensation on the received first time information T1, T2 is obtained, where T2-T1=Td, and Td is the propagation delay.

Optionally, the first terminal device may acquire the zone ID (zone ID) of the second terminal device, and determine the propagation time Td according to the zone ID of the second terminal device. Alternatively, the second terminal device may obtain the zone ID of the first terminal device, and determine the propagation time Td according to the zone ID of the first terminal device, but the present application is not limited to this.

According to the above solution, the timing information considers the propagation delay, and performs delay compensation, so that the second terminal device can obtain more accurate time information.

S410 in the embodiment shown in FIG. 4 can be replaced by S411. In S411, the first terminal device can also be the most accurate clock (grand master, GM) through an external clock of the system, such as a time sensitive network (TSN) ) after acquiring the time information, determine the first time information corresponding to the first time unit in S420, and notify the second terminal device in S430.

According to the above solution, the first terminal device determines the first time information corresponding to the first time unit of the second terminal device according to the time information obtained by itself, and notifies the second terminal device so that the second terminal device can obtain the system time.

Before S420 in the embodiment in FIG. 4 , the interaction process in the embodiment shown in FIG. 8 may also be included between the first terminal device, the second terminal device, and the network device. It should be noted that the embodiment in FIG. 4 may be implemented independently It may also be implemented in combination with some or all of the steps in the embodiment of FIG. 8 , which is not limited in this application.

S810: The second terminal device sends second information to the first terminal device, where the second information indicates that the second terminal device requests time information.

Correspondingly, the first terminal device receives the second information from the second terminal device, and the first terminal device determines the time information requested by the second terminal device according to the second information.

S820, the first terminal device sends fourth information to the network device, where the fourth information indicates that the first terminal device has the capability of sending time information to other terminal devices.

Correspondingly, the network device receives the fourth information from the first terminal device, and determines that the first terminal device has the capability of other terminal devices to send time information. The first terminal device may execute S820 when it is determined in S810 that the second terminal device requests time information, or may send capability information of the first terminal device to the network device when accessing the network or after accessing the network.

S830, the network device sends fifth information to the first terminal device, where the fifth information instructs the first terminal device to send time information to other terminal devices.

Correspondingly, the first terminal device receives the fifth information and determines that time information can be sent to other terminal devices. In other words, the network device authorizes the first terminal device to send time information to other terminal devices. The first terminal device may perform S420 in the embodiment shown in FIG. 4 after S830, but the present application is not limited to this.

In this embodiment, the network device obtains the boundary and number of the first time unit of the second terminal device, determines the first time information corresponding to the first time unit, and then informs the second terminal device of the first time unit corresponding to the first time unit through the first terminal device. first time information. The first terminal device provides a communication relay service for the second terminal device and the network device. The first time unit is a time resource used by the second terminal device for communication.

As an example and not limitation, the first time information may be time information corresponding to the start time or the end time of the first time unit.

As an example and not limitation, the first time unit may be a time slot, a subframe or a radio frame.

In this embodiment, the network device may acquire the boundary and number of the first time unit of the second terminal device, including but not limited to the following three implementation manners.

method one

The first mode includes S910a, S920, and S930. The execution order of S910a, S920, and S930 is not limited in this embodiment of the present application.

S910a, the second terminal device sends third information to the network device through the first terminal device, where the third information indicates the boundary of the first time unit A and the serial number of the first time unit A.

After receiving the third information from the second terminal device forwarded by the first terminal device, the network device determines the boundary of the first time unit A of the second terminal device and the corresponding number of the first time unit A according to the third information. Therefore, the network device can determine the division of the first time unit of the second terminal device and the number corresponding to each first time unit.

Optionally, the boundary of the first time unit A may be represented by UTC time.

S920, the network device determines the first time information B corresponding to the first time unit B.

The network device determines one time unit in the first time unit, for example, the first time information B corresponding to the first time unit B.

S930 , the network device sends first information to the second terminal device through the first terminal device, where the first information indicates the serial number of the first time unit B and the first time information B.

The network device sends the first information to the first terminal device, and the first terminal device forwards the first information to the second terminal device. After receiving the first information, the second terminal device may determine, according to the number of the first time unit in the first information, that the first time information B in the first information is the time information corresponding to the first time unit B, thereby obtaining the system time .

It should be noted that the first time unit A and the first time unit B may be the same first time unit. For example, after the second terminal device notifies the boundary and number of the first time unit A in S910a, the network device will S930 determines the first time information A corresponding to the boundary of the first time unit, and sends the first information to the second terminal device in S930, where the first information includes the first time corresponding to the first time unit A Information A, which is not limited in this application.

Optionally, the first information may indicate the difference between the serial number of the first time unit B and the serial number of the second time unit corresponding to the first time unit B, or the serial number of the second time unit. After receiving the first information, the second terminal device determines the number of the first time unit B and the corresponding first time information B according to the number of the second time unit and the difference, thereby determining the system time. Optionally, the second terminal device may acquire the serial number of the second time unit from the first terminal device or the network device before receiving the first information.

Method 2

The second mode includes S910b, S911, S912, S920 and S930. The execution order of S910b, S911, S912, S920, and S930 is not limited in this embodiment of the present application.

S910b, the second terminal device sends third information to the first terminal device, where the third information indicates the boundary of the first time unit A and the number of the first time unit A.

The specific implementation of this S910b may refer to S420 of FIG. 4 , the first terminal device receives third information from the second terminal device, where the third information indicates the boundary of the first time unit and/or the number of the first time unit , and for the sake of brevity, this will not be repeated here.

S911, the first terminal device determines a first value, where the first value is a difference between the serial number of the first time unit and the serial number of the second time unit corresponding to the same time point.

After receiving the third information from the second terminal device, the first terminal device determines the division of the first time unit of the second terminal device and the number of each first time unit according to the third information. The first terminal device then determines the first time unit of the second terminal device corresponding to the same time point according to the division of the second time unit of the network device and the number of the second time unit determined by the synchronization between the first terminal device and the network device The difference between the number of the network device and the number of the second time unit of the network device, that is, the first value. Wherein, the second time unit is a time resource used by the network device for communication. The duration of the second time unit is the same as the duration of the first time unit.

Optionally, when the first time unit is the time slot of the second terminal device, the second time unit is the time slot of the network device, or, when the first time unit is the subframe of the second terminal device, the second time unit is the time slot of the second terminal device. The second time unit is a subframe of the network device, and alternatively, when the first time unit is a radio frame of the second terminal device, the second time unit is a radio frame of the network device.

S912, the first terminal device sends fourth information to the network device, where the fourth information indicates the first value.

Correspondingly, the network device receives the fourth information, and the network device determines the number of the first time unit of the second terminal device according to the first value in the fourth information and the number of the second time unit of the network device. After the number is determined, the network device determines the first time information B corresponding to the first time unit B in the first time unit in S920, and notifies the second terminal device through the first terminal device in S930, so that the second terminal device obtains system time.

way three

The second mode includes S910c, S920 and S930. The execution order of S910c, S920, and S930 is not limited in this embodiment of the present application.

S910c, the second terminal device sends fifth information to the network device through the first terminal device, where the fifth information indicates the synchronization source of the second terminal device, or the fifth information indicates that the first time unit is the second terminal device according to the UTC time definite.

The second terminal device notifies the network device of the synchronization source of the second terminal device through the first terminal device,

When the fifth information indicates that the synchronization source of the second terminal device is GNSS, the network device may determine the division of the first time unit of the second terminal device and the number of the first time unit according to the UTC time of the GNSS. For example, the first time unit is the direct frame determined by the second terminal device according to the UTC time of the GNSS, and the second network device may determine the direct frame of the second terminal device according to the UTC time of the GNSS, but the application is not limited thereto.

In the case where the fifth information indicates that the synchronization source of the second terminal device is the network device, the network device determines the division and number of the first time unit of the second terminal device and the division and number of the second time unit of the network device The numbers are the same, and the second time unit is a time resource used by the network device for communication. Optionally, the duration of the second time unit may be the same as the duration of the first time unit. For example, the first time unit and the second time unit are system frames of the network device, but the present application is not limited thereto.

In the case where the fifth information indicates that the synchronization source of the second terminal device is GNSS and other synchronization sources other than the network device, the network device does not use this method to provide timing to the second terminal device.

After the network device determines the division of the first time unit of the second terminal device, the network device determines the first time information B corresponding to the first time unit B in the first time unit in S920, and in S930 passes the first time unit through the first terminal device. Notify the second terminal device so that the second terminal device can obtain the system time.

Optionally, the first time information B sent by the network device may be time information after the network device performs delay compensation according to the propagation delay Td1 between the network device and the second terminal device, that is, the first time information is the first time information B. The time information corresponding to the first time unit B understood by the two terminal devices, that is, the first time information is the difference between the first time information T1 corresponding to the first time unit B understood by the network device and the network device and the second terminal device. The sum of the propagation delays Td1 between. Alternatively, the first time information B sent by the network device may be time information T1 corresponding to the first time unit B understood by the network device, and the second terminal device receives the first time information B and the propagation delay Td After the addition, the time information corresponding to the first time unit B understood by the second terminal device is obtained, that is, T1+Td1. Optionally, the first information further includes indication information, where the indication information is used to indicate whether the first time information B has undergone delay compensation, but the present application is not limited thereto.

Optionally, the first time information B sent by the network device may be time information after the network device performs delay compensation according to the propagation delay Td2 between the network device and the first terminal device, that is, the first time information is the first time information B. The time information corresponding to the first time unit B understood by the terminal device, that is, the first time information is the difference between the first time information T1 corresponding to the first time unit B understood by the network device and the network device and the first terminal device. The sum of the propagation delays Td2 between. Alternatively, the first time information B sent by the network device may be time information T1 corresponding to the first time unit B understood by the network device, and the first terminal device receives the first time information B and the propagation delay Td2 After the addition, time information corresponding to the first time unit B understood by the second terminal device is obtained, that is, T1+Td2, and the time information corresponding to the first time unit B is sent to the second terminal device. Optionally, the first information further includes indication information, and the indication information is used to indicate whether the first time information B has undergone delay compensation (that is, indicating whether the propagation delay between the first terminal device and the network device has been compensated). ), but this application is not limited thereto. In this way, only the propagation delay of the first terminal device and the network device is considered for time compensation, and the propagation delay between the first terminal device and the second terminal device is compensated by the second terminal device.

According to the above solution, the network device determines the first time information corresponding to the first time unit by acquiring the boundary and number of the first time unit of the second terminal device, and notifies the second terminal device through the first terminal device, so that the second The terminal device can obtain the system time.

It should be understood that, in the above-mentioned embodiments, the size of the sequence numbers of each process does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application. . In addition, the above-mentioned embodiments may be implemented independently or in combination with each other, and all or part of the steps in the above-mentioned embodiments are used for implementation in the specific implementation, which are all within the protection scope of the present application.

In the above, the methods provided by the embodiments of the present application are described in detail with reference to FIG. 2 to FIG. 9 . Hereinafter, the apparatus provided by the embodiments of the present application will be described in detail with reference to FIG. 10 to FIG. 12 .

FIG. 10 is a schematic block diagram of a communication apparatus provided by an embodiment of the present application. As shown in FIG. 10 , the communication apparatus 1000 may include a processing unit 1010 and a transceiver unit 1020 .

In a possible design, the communication apparatus 1000 may correspond to the first terminal device in the above method embodiment or a chip configured in the first terminal device.

It should be understood that the communication apparatus 1000 may correspond to the first terminal device in the methods 400 , 800 and 900 according to the embodiments of the present application, and the communication apparatus 1000 may include a method for executing the method 400 in FIG. 4 , FIG. 8 or FIG. 9 . , 800, and 900, the unit of the method performed by the first terminal device. In addition, each unit in the communication device 1000 and the above-mentioned other operations and/or functions are respectively to implement the corresponding processes of the methods 400 , 800 and 900 in FIG. 4 , FIG. 8 or FIG. 9 .

In another possible design, the communication apparatus 1000 may correspond to the second terminal device in the above method embodiment or a chip configured in the second terminal device.

It should be understood that the communication apparatus 1000 may correspond to the second terminal device in the methods 400 , 800 , and 900 according to the embodiments of the present application, and the communication apparatus 1000 may include a method for executing the method 400 in FIG. 4 , FIG. 8 or FIG. 9 . , 800, and 900, the unit of the method performed by the second terminal device. In addition, each unit in the communication device 1000 and the above-mentioned other operations and/or functions are respectively to implement the corresponding processes of the methods 400 , 800 and 900 in FIG. 4 , FIG. 8 or FIG. 9 .

It should also be understood that when the communication device 1000 is a terminal device (a first terminal device or a second terminal device), the transceiver unit 1020 in the communication device 1000 may correspond to the transceiver 1120 in the terminal device 1100 shown in FIG. 11 . , the processing unit 1010 in the communication apparatus 1000 may correspond to the processor 1110 in the terminal device 1100 shown in FIG. 11 .

It should also be understood that when the communication apparatus 1000 is a terminal device, the transceiver unit 1020 in the communication apparatus 1000 may be implemented through a communication interface (such as a transceiver or an input/output interface), for example, it may correspond to the terminal device shown in FIG. 11 . The transceiver 1120 in 1100, the processing unit 1010 in the communication apparatus 1000 may be implemented by at least one processor, for example, may correspond to the processor 1110 in the terminal device 1100 shown in FIG. 11, the processing in the communication apparatus 1000 Unit 1010 may also be implemented by at least one logic circuit.

Optionally, the communication apparatus 1000 may further include a processing unit 1010, and the processing unit 1010 may be used to process instructions or data to implement corresponding operations.

Optionally, the communication apparatus 1000 may further include a storage unit, which may be used to store instructions or data, and the processing unit may call the instructions or data stored in the storage unit to implement corresponding operations.

It should be understood that the specific process of each unit performing the above-mentioned corresponding steps has been described in detail in the above-mentioned method embodiments, and for the sake of brevity, it will not be repeated here.

In another possible design, the communication apparatus 1000 may correspond to the network device in the above method embodiment or a chip configured in the network device.

It should be understood that the communication apparatus 1000 may correspond to the network equipment in the methods 400 , 800 , and 900 according to the embodiments of the present application, and the communication apparatus 1000 may include a method for executing the methods 400 and 800 in FIG. 4 , FIG. 8 or FIG. 9 . . Elements of the method performed by the network device in 900. In addition, each unit in the communication device 1000 and the above-mentioned other operations and/or functions are respectively to implement the corresponding processes of the methods 400 , 800 and 900 in FIG. 4 , FIG. 8 or FIG. 9 .

It should also be understood that when the communication device 1000 is a network device, the transceiver unit in the communication device 1000 may correspond to the transceiver 1210 in the network device 1200 shown in FIG. 12 , and the processing unit 1010 in the communication device 1000 may Corresponds to the processor 1222 in the network device 1200 shown in FIG. 12 .

It should also be understood that when the communication apparatus 1000 is a network device, the transceiver unit 1020 in the communication apparatus 1000 may be implemented through a communication interface (such as a transceiver or an input/output interface), for example, may correspond to the network shown in FIG. 12 The transceiver 1210 in the device 1200, the processing unit 1010 in the communication device 1000 may be implemented by at least one processor, for example, may correspond to the processor 1222 in the network device 1200 shown in FIG. The processing unit 1010 may be implemented by at least one logic circuit.

FIG. 11 is a schematic structural diagram of a terminal device 900 provided by an embodiment of the present application. The terminal device 900 may be applied to the system shown in FIG. 1 to perform the functions of the terminal device in the foregoing method embodiments. As shown in the figure, the terminal device 1100 includes a processor 1110 and a transceiver 1120 . Optionally, the terminal device 1100 further includes a memory 1130 . Among them, the processor 1110, the transceiver 1120 and the memory 1130 can communicate with each other through an internal connection path to transmit control and/or data signals. The memory 1130 is used to store computer programs, and the processor 1110 is used to retrieve data from the memory 1130. The computer program is invoked and executed to control the transceiver 1120 to send and receive signals. Optionally, the terminal device 1100 may further include an antenna 1140 for sending the uplink data or uplink control signaling output by the transceiver 1120 through wireless signals.

The above-mentioned processor 1110 and the memory 1130 can be combined into a processing device, and the processor 1110 is configured to execute the program codes stored in the memory 1130 to realize the above-mentioned functions. During specific implementation, the memory 930 may also be integrated in the processor 1110 or independent of the processor 1110 . The processor 1110 may correspond to the processing unit in FIG. 10 .

The transceiver 1120 described above may correspond to the transceiver unit in FIG. 10 . The transceiver 1120 may include a receiver (or receiver, receiving circuit) and a transmitter (or transmitter, transmitting circuit). Among them, the receiver is used for receiving signals, and the transmitter is used for transmitting signals.

It should be understood that the terminal device 1100 shown in FIG. 11 can implement various processes involving the terminal device in the method embodiments shown in FIG. 4 , FIG. 8 , and FIG. 9 . The operations and/or functions of each module in the terminal device 1100 are respectively to implement the corresponding processes in the foregoing method embodiments. For details, reference may be made to the descriptions in the foregoing method embodiments, and to avoid repetition, the detailed descriptions are appropriately omitted here.

The above-mentioned processor 1110 may be used to perform the actions described in the foregoing method embodiments that are implemented inside the terminal device, and the transceiver 1120 may be used to perform the operations described in the foregoing method embodiments that the terminal device sends to or receives from the network device. action. For details, please refer to the descriptions in the foregoing method embodiments, which will not be repeated here.

Optionally, the above-mentioned terminal device 1100 may further include a power supply 1150 for providing power to various devices or circuits in the terminal device.

In addition, in order to make the functions of the terminal device more complete, the terminal device 1100 may further include one or more of an input unit 1160, a display unit 1170, an audio circuit 1180, a camera 1190, a sensor 1101, etc., the audio circuit Speakers 1182, microphones 1184, etc. may also be included.

It should be understood that the network device 1200 shown in FIG. 12 can implement various processes involving the network device in the method embodiments shown in FIG. 4 , FIG. 8 , and FIG. 9 . The operations and/or functions of each module in the network device 1200 are respectively to implement the corresponding processes in the foregoing method embodiments. For details, reference may be made to the descriptions in the foregoing method embodiments, and to avoid repetition, the detailed descriptions are appropriately omitted here.

It should be understood that the network device 1200 shown in FIG. 12 is only a possible architecture of the network device, and should not constitute any limitation to the present application. The methods provided in this application may be applicable to network devices of other architectures. For example, network equipment including CU, DU, and AAU, etc. This application does not limit the specific architecture of the network device.

An embodiment of the present application further provides a processing device, including a logic circuit and a communication interface, where the communication interface is configured to receive a signal input to the processing device or a processed signal output from the chip, the logic circuit according to The method in any of the above method embodiments processes the signal input to the chip, and generates the processed signal.

It should be understood that the above-mentioned processing device may be one or more chips. For example, the processing device may be a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on chip (SoC), or a It is a central processing unit (CPU), a network processor (NP), a digital signal processing circuit (DSP), or a microcontroller (microcontroller unit). , MCU), it can also be a programmable logic device (PLD) or other integrated chips.

In the implementation process, each step of the above-mentioned method can be completed by a hardware integrated logic circuit in a processor or an instruction in the form of software. The steps of the methods disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware processor, or executed by a combination of hardware and software modules in the processor. The software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware. To avoid repetition, detailed description is omitted here.

It should be noted that the processor in this embodiment of the present application may be an integrated circuit chip, which has a signal processing capability. In the implementation process, each step of the above method embodiments may be completed by a hardware integrated logic circuit in a processor or an instruction in the form of software. The aforementioned processors may be general purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components . The methods, steps, and logic block diagrams disclosed in the embodiments of this application can be implemented or executed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in this embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically programmable Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory. Volatile memory may be random access memory (RAM), which acts as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synchlink DRAM, SLDRAM) ) and direct memory bus random access memory (direct rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but not be limited to, these and any other suitable types of memory.

According to the method provided by the embodiment of the present application, the present application also provides a computer program product, the computer program product includes: computer program code, when the computer program code is run on a computer, the computer is made to execute Figure 4, Figure 8, The method in the embodiment shown in FIG. 9 .

According to the method provided by the embodiment of the present application, the present application further provides a computer-readable medium, where the computer-readable medium stores program codes, when the program codes are run on a computer, the computer is made to execute FIG. 4 , FIG. 8 , The method in the embodiment shown in FIG. 9 .

According to the method provided by the embodiment of the present application, the present application further provides a system, which includes the aforementioned one or more terminal devices and one or more network devices.

The network equipment in each of the above apparatus embodiments completely corresponds to the terminal equipment and the network equipment or terminal equipment in the method embodiments, and corresponding steps are performed by corresponding modules or units. For the sending step, other steps except sending and receiving may be performed by a processing unit (processor). For functions of specific units, reference may be made to corresponding method embodiments. The number of processors may be one or more.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented in software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general purpose computer, special purpose computer, computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server or data center Transmission to another website site, computer, server, or data center by wire (eg, coaxial cable, optical fiber, digital subscriber line, DSL) or wireless (eg, infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes an integration of one or more available media. The available media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, high-density digital video discs (DVDs)), or semiconductor media (eg, solid state discs, SSD)) etc.

The terms "component", "module", "system" and the like are used in this specification to refer to a computer-related entity, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component may be, but is not limited to, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of illustration, both an application running on a computing device and the computing device may be components. One or more components may reside within a process and/or thread of execution, and a component may be localized on one computer and/or distributed between 2 or more computers. In addition, these components can execute from various computer readable media having various data structures stored thereon. A component may, for example, be based on a signal having one or more data packets (eg, data from two components interacting with another component between a local system, a distributed system, and/or a network, such as the Internet interacting with other systems via signals) Communicate through local and/or remote processes.

Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.

In the above embodiments, the functions of each functional unit may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions (programs). When the computer program instructions (programs) are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general purpose computer, special purpose computer, computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server or data center Transmission to another website site, computer, server, or data center is by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes an integration of one or more available media. The usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVDs), or semiconductor media (eg, solid state disks (SSDs)), and the like.

The functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. should be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

A communication method, characterized in that the communication method is executed by a first terminal device, comprising:

determining first time information corresponding to a first time unit, where the first time unit is a time resource used by the second terminal device for communication;

Send first information to the second terminal device, where the first information includes the first time information.
The method according to claim 1, wherein the first time information is time information corresponding to a start time or an end time of the first time unit.
The method according to claim 1 or 2, wherein the sending the first time information to the second terminal device comprises:

The first information is sent in a plurality of second time units, the first time units including at least two of the second time units.
The method according to claim 3, wherein the second time unit is a symbol, a time slot or a subframe.
The method according to claim 1 or 2, wherein the determining the first time information corresponding to the first time unit comprises:

determining the first time information corresponding to each of the first time units in the plurality of first time units;

And, the sending the first information to the second terminal device includes:

The first information is sent in each first time unit of the plurality of first time units, wherein the first information includes all the information corresponding to the first time unit where the first information is located. the first time information.
The method according to any one of claims 1 to 5, wherein the first time unit is a time slot, a subframe or a radio frame.
The method according to any one of claims 1 to 6, wherein the method further comprises:

receiving second information from the second terminal device, the second information indicating that the second terminal device requests time information; and/or,

The second information is sent to the network device.
The method according to any one of claims 1 to 7, wherein the first information further includes a serial number of the first time unit.
The method according to claim 8, wherein the method further comprises:

Third information is received from the second terminal device, the third information indicating the boundary of the first time unit and/or the number of the first time unit.
The method according to any one of claims 1 to 9, wherein the method further comprises:

sending fourth information to the network device, the fourth information indicating that the first terminal device has the ability to send time information to other terminal devices; and/or,

Fifth information is received from a network device, where the fifth information instructs the first terminal device to send time information to the second terminal device.
A communication method, characterized in that the communication method is executed by a second terminal device, comprising:

Receive first information from a first terminal device, where the first information includes first time information corresponding to a first time unit, where the first time unit is a time resource used by the second terminal device for communication.
The method according to claim 11, wherein the method further comprises:

Send second information to the first terminal device, where the second information is used to instruct the second terminal device to request time information.
The method according to claim 11 or 12, wherein the first time information is time information corresponding to a start time or an end time of the first time unit.
The method according to any one of claims 11 to 13, wherein the receiving the first information from the first terminal device comprises:

The first information from the first terminal device is received in a plurality of second time units, the first time units including at least two of the second time units.
The method according to claim 14, wherein the second time unit is a symbol, a time slot or a subframe.
The method according to any one of claims 11 to 13, wherein the receiving the first information from the first terminal device comprises:

The first information from the first terminal device is received in multiple first time units, where the first information includes the first time information corresponding to the first time unit where the first information is located .
The method according to any one of claims 11 to 16, wherein the first time unit is a time slot, a subframe or a radio frame.
The method according to any one of claims 11 to 17, wherein the first information further includes the serial number of the first time unit.
The method of claim 18, wherein the method further comprises:

Sending third information to the first terminal device, the third information indicating the boundary of the first time unit and/or the number of the first time unit.
A communication device, characterized by comprising a module for performing the method according to any one of claims 1 to 10.
A communication device, characterized by comprising a module for performing the method according to any one of claims 11 to 19.
A communication device, characterized by comprising a processor and a memory, wherein the processor is coupled with the memory, and the processor is configured to implement the method according to any one of claims 1 to 10.
A communication device, comprising a processor and a memory, wherein the processor is coupled to the memory, and the processor is configured to implement the method according to any one of claims 11 to 19.
A communication device, characterized by comprising a processor and an interface circuit, wherein the interface circuit is configured to receive signals from other communication devices other than the communication device and transmit to the processor or transfer signals from the processor The signal is sent to other communication devices other than the communication device, and the processor is used to implement the method according to any one of claims 1 to 10 by means of a logic circuit or executing code instructions.
A communication device, characterized by comprising a processor and an interface circuit, wherein the interface circuit is configured to receive signals from other communication devices other than the communication device and transmit to the processor or transfer signals from the processor The signal is sent to other communication devices than the communication device, and the processor is used to implement the method according to any one of claims 11 to 19 by means of a logic circuit or executing code instructions.
A computer-readable storage medium, characterized in that, a computer program or instruction is stored in the storage medium, and when the computer program or instruction is executed by a communication device, any one of claims 1 to 10 is implemented. The method of, or, implementing the method of any one of claims 11 to 19.
A communication system, characterized by comprising the communication device according to any one of claims 20, 22, and 24, and the communication device according to any one of claims 21, 23, and 25.