WO2023050141A1

WO2023050141A1 - Wireless communication method, terminal device, and network device

Info

Publication number: WO2023050141A1
Application number: PCT/CN2021/121683
Authority: WO
Inventors: 赵楠德; 马东俊
Original assignee: Oppo广东移动通信有限公司
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2023-04-06
Also published as: CN117461380A

Abstract

Provided are a wireless communication method, a terminal device, and a network device. The method comprises: a terminal device receiving DCI sent by a network device, the DCI being used for scheduling a first signal/channel, and the DCI being used for instructing the terminal device to execute LBT; the terminal device sending the first signal/channel to the network device, the first signal/channel comprising first information, and the first information being used for indicating the result of LBT. The terminal device sends the first information indicating the LBT result to the network device, so that the network device can correctly obtain the result of the terminal device executing LBT, thus eliminating the problem of ambiguity during a handshake process between the network device and the terminal device that can be caused by an LBT scheme in which short control signaling transmission and receiving side assistance are introduced at the same time in an unlicensed frequency band.

Description

Wireless communication method, terminal device and network device

technical field

The present application relates to the field of communication technologies, and more specifically, to a wireless communication method, terminal equipment, and network equipment.

Background technique

Unlicensed frequency bands (such as high-frequency unlicensed frequency bands in the frequency range of 52.6GHz-71GHz) may support a listen before talk (LBT) scheme assisted by the receiving side. In this solution, the terminal device needs to perform LBT before sending a certain signal/channel to the network device. In addition, the introduction of short control signaling transmission schemes in unlicensed frequency bands is currently being discussed. Based on the short control signaling transmission scheme, network equipment and terminal equipment can transmit a certain signal/channel in the unlicensed frequency band without performing LBT.

If both the short control signaling transmission scheme and the receiver-assisted LBT scheme are introduced in the unlicensed frequency band, the terminal equipment may or may not have performed LBT before sending a certain signal/channel to the network equipment. Therefore, after receiving the signal/channel, the network device may not be able to determine whether the terminal device has performed LBT, thus causing ambiguity in the handshake process between the network device and the terminal device.

Contents of the invention

The present application provides a wireless communication method, terminal equipment and network equipment to solve the above problems.

In a first aspect, a wireless communication method is provided, including: a terminal device receives downlink control information (DCI) sent by a network device, the DCI is used to schedule a first signal/channel, and the DCI uses To instruct the terminal device to perform LBT; the terminal device sends the first signal/channel to the network device, the first signal/channel includes first information, and the first information is used to indicate the LBT the result of.

In a second aspect, a wireless communication method is provided, including: a terminal device receives DCI sent by a network device, the DCI is used to schedule a first signal/channel, and the DCI is used to instruct the terminal device to perform LBT; if The result of the LBT is LBT success, then the terminal device sends the first signal/channel to the network device; if the result of the LBT is LBT failure, the terminal device does not send the first signal/channel to the network device The first signal/channel.

In a third aspect, a wireless communication method is provided, including: a network device sends DCI to a terminal device, the DCI is used to schedule a first signal/channel, and the DCI is used to instruct the terminal device to perform LBT; the The network device receives the first signal/channel sent by the terminal device, where the first signal/channel includes first information, and the first information is used to indicate the result of the LBT.

In a fourth aspect, a wireless communication method is provided, including: a network device sends DCI to a terminal device, the DCI is used to schedule a first signal/channel, and the DCI is used to instruct the terminal device to perform LBT; if the If the network device receives the first signal/channel, the network device determines that the result of the LBT is that the LBT is successful; if the network device does not receive the first signal/channel, the network device determines that The result of the LBT was LBT failure.

In a fifth aspect, a terminal device is provided, including: a receiving module, configured to receive DCI sent by a network device, the DCI is used to schedule a first signal/channel, and the DCI is used to instruct the terminal device to perform LBT; A sending module, configured to send the first signal/channel to the network device, where the first signal/channel includes first information, and the first information is used to indicate the result of the LBT.

In a sixth aspect, a terminal device is provided, including: a receiving module, configured to receive DCI sent by a network device, the DCI is used to schedule a first signal/channel, and the DCI is used to instruct the terminal device to perform LBT; A sending module, configured to send the first signal/channel to the network device if the result of the LBT is LBT success; if the result of the LBT is LBT failure, not send the first signal/channel to the network device signal/channel.

In a seventh aspect, a network device is provided, including: a sending module, configured to send DCI to a terminal device, the DCI is used to schedule a first signal/channel, and the DCI is used to instruct the terminal device to perform LBT; receiving A module, configured to receive the first signal/channel sent by the terminal device, where the first signal/channel includes first information, and the first information is used to indicate the result of the LBT.

In an eighth aspect, a network device is provided, including: a sending module, configured to send DCI to a terminal device, the DCI is used to schedule a first signal/channel, and the DCI is used to instruct the terminal device to perform LBT; determine A module, configured to, if the network device receives the first signal/channel, determine that the result of the LBT is LBT success; if the network device does not receive the first signal/channel, determine the result of the LBT The result is LBT failure.

In a ninth aspect, there is provided a terminal device, including a memory and a processor, the memory is used to store programs, and the processor is used to call the programs in the memory to execute the program described in the first aspect or the second aspect method.

In a tenth aspect, a network device is provided, including a memory and a processor, the memory is used to store a program, and the processor is used to call the program in the memory to execute the method described in the third aspect or the fourth aspect .

In an eleventh aspect, an apparatus is provided, including a processor, configured to call a program from a memory to execute the method described in any one of the first to fourth aspects.

In a twelfth aspect, a chip is provided, including a processor, configured to call a program from a memory, so that a device installed with the chip executes the method described in any one of the first to fourth aspects.

In a thirteenth aspect, a computer-readable storage medium is provided, on which a program is stored, and the program causes a computer to execute the method described in any one of the first to fourth aspects.

A fourteenth aspect provides a computer program product, including a program, the program causes a computer to execute the method described in any one of the first to fourth aspects.

A fifteenth aspect provides a computer program, the computer program causes a computer to execute the method described in any one of the first to fourth aspects.

In the receive-side assisted LBT solution provided by the embodiment of this application, when the terminal device sends the first signal/channel to the network device, it will carry the first information for indicating the LBT result in the first signal/channel, so that the network The device can clearly obtain the result of LBT performed by the terminal device, which eliminates the ambiguity in the handshake process between the network device and the terminal device that may be caused by the introduction of the short control signaling scheme in the unlicensed frequency band.

Description of drawings

FIG. 1 is a structural diagram of a communication system to which the embodiment of the present application can be applied.

Fig. 2 is a schematic flowchart of a wireless communication method provided by an embodiment of the present application.

Fig. 3a is an example diagram of the process of transmitting DCI and PUCCH based on short control signaling.

Fig. 3b is an example diagram of the process of transmitting DCI and PUCCH based on the method shown in Fig. 2 .

Fig. 4a is an example diagram of the process of transmitting DCI and SRS based on short control signaling.

Fig. 4b is an example diagram of the process of transmitting DCI and SRS based on the method shown in Fig. 2 .

Fig. 5a is an example diagram of the process of transmitting DCI and PUSCH based on short control signaling.

Fig. 5b is an example diagram of the process of transmitting DCI and PUSCH based on the method shown in Fig. 2 .

Fig. 6 is a schematic flowchart of a wireless communication method provided by another embodiment of the present application.

Fig. 7a is an example diagram of a process of transmitting DCI and a first signal/channel based on short control signaling.

Fig. 7b is an example diagram of a process of transmitting DCI and a first signal/channel based on the method shown in Fig. 6 .

Fig. 8 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.

Fig. 9 is a schematic structural diagram of a terminal device provided by another embodiment of the present application.

Fig. 10 is a schematic structural diagram of a network device provided by an embodiment of the present application.

Fig. 11 is a schematic structural diagram of a network device provided by another embodiment of the present application.

Fig. 12 is a schematic structural diagram of the device provided by the embodiment of the present application.

Detailed ways

Communication System Architecture

FIG. 1 shows a wireless communication system 100 to which the embodiment of the present application can be applied. The wireless communication system 100 may include a network device 110 and a terminal device 120 . The network device 110 may be a device that communicates with the terminal device 120 . The network device 110 can provide communication coverage for a specific geographical area, and can communicate with the terminal device 120 located in the coverage area.

FIG. 1 exemplarily shows one network device and two terminals. Optionally, the wireless communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within the coverage area. This application The embodiment does not limit this.

Optionally, the wireless communication system 100 may further include other network entities such as a network controller and a mobility management entity, which is not limited in this embodiment of the present application.

It should be understood that the technical solutions of the embodiments of the present application can be applied to various communication systems, for example: the fifth generation (5th generation, 5G) system or new radio (new radio, NR), long term evolution (long term evolution, LTE) system , LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD), etc. The technical solutions provided in this application can also be applied to future communication systems, such as the sixth generation mobile communication system, and satellite communication systems, and so on.

The terminal equipment in the embodiment 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 (mobile station, MS), mobile terminal (mobile Terminal, MT) ), 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 device that provides voice and/or data connectivity to users, and can be used to connect people, objects and machines, such as handheld devices with wireless connection functions, vehicle-mounted devices, and the like. The terminal device in the embodiment of the present application can be mobile phone (mobile phone), tablet computer (Pad), notebook computer, palmtop computer, mobile internet device (mobile internet device, MID), wearable device, virtual reality (virtual reality, VR) equipment, augmented reality (augmented reality, AR) equipment, wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical surgery, smart Wireless terminals in smart grid, wireless terminals in transportation safety, wireless terminals in smart city, wireless terminals in smart home, etc. Optionally, UE can be used to act as a base station. For example, a UE may act as a scheduling entity that provides sidelink signals between UEs in V2X or D2D, etc. For example, a cell phone and an automobile communicate with each other using sidelink signals. Communication between cellular phones and smart home devices without relaying communication signals through base stations.

The network device in this embodiment of the present application may be a device for communicating with a terminal device, and the network device may also be called an access network device or a wireless access network device, for example, the network device may be a base station. The network device in this embodiment of the present application may refer to a radio access network (radio access network, RAN) node (or device) that connects a terminal device to a wireless network. The base station can broadly cover various names in the following, or replace with the following names, such as: Node B (NodeB), evolved base station (evolved NodeB, eNB), next generation base station (next generation NodeB, gNB), relay station, Access point, transmission point (transmitting and receiving point, TRP), transmission point (transmitting point, TP), primary station MeNB, secondary station SeNB, multi-standard wireless (MSR) node, home base station, network controller, access node , wireless node, access point (access piont, AP), transmission node, transceiver node, base band unit (base band unit, BBU), remote radio unit (Remote Radio Unit, RRU), active antenna unit (active antenna unit) , AAU), radio head (remote radio head, RRH), central unit (central unit, CU), distributed unit (distributed unit, DU), positioning nodes, etc. A base station may be a macro base station, a micro base station, a relay node, a donor node, or the like, or a combination thereof. A base station may also refer to a communication module, a modem or a chip configured in the aforementioned equipment or device. The base station can also be a mobile switching center, a device that undertakes the function of a base station in D2D, vehicle-to-everything (V2X), machine-to-machine (M2M) communication, and a device in a 6G network. Network-side equipment, equipment that assumes base station functions in future communication systems, etc. Base stations can support networks of the same or different access technologies. The embodiment of the present application does not limit the specific technology and specific device form adopted by the network device.

Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move according to the location of the mobile base station. In other examples, a helicopter or drone may be configured to serve as a device in communication with another base station.

In some deployments, the network device in this embodiment of the present application may refer to a CU or a DU, or, the network device includes a CU and a DU. A gNB may also include an AAU.

Network equipment and terminal equipment can be deployed on land, including indoors or outdoors, hand-held or vehicle-mounted; they can also be deployed on water; they can also be deployed on aircraft, balloons and satellites in the air. In the embodiment of the present application, the scenarios where the network device and the terminal device are located are not limited.

It should be understood that the communication device mentioned in this application may be a network device, or may also be a terminal device. For example, the first communication device is a network device, and the second communication device is a terminal device. In another example, the first communication device is a terminal device, and the second communication device is a network device. In another example, both the first communication device and the second communication device are network devices, or both are terminal devices.

It should also be understood that all or part of the functions of the communication device in this application may also be realized by software functions running on hardware, or by virtualization functions instantiated on a platform (such as a cloud platform).

Short Control Signaling Transmission

Short control signaling transmission (short control signaling transmission, SCST) is a transmission method for devices to send management and control frames. The short control signaling transmission process does not need to monitor whether there are other signals on the channel. It can be seen that the short control signaling transmission is a contention-free transmission.

The use of short control signaling transmission usually needs to meet the following restrictions:

1. Within the observation period of 100ms;

2. During the above observation period, the total time of short control signaling transmission of the device should be less than 10ms.

At present, the uplink transmission based on contention-free short control signaling may be applied to the following types of signals and channels: physical uplink control channel (physical uplink control channel, PUCCH), sounding reference signal (sounding reference signal, SRS) and not A physical uplink shared channel (PUSCH) carrying user plane data. The PUSCH that does not carry user plane data may include: a PUSCH that carries a hybrid automatic repeat reQuest-Acknowledgment (HARQ-ACK), a PUSCH that carries channel state information (CSI) (or bearer CSI report PUSCH), and PUSCH carrying message 3 (Msg 3).

Receiver-assisted wireless channel access (or receiver-assisted LBT)

In the high-frequency unlicensed frequency band (52.6GHz-71GHz), the implementation of LBT on the transmitting side has been supported by the protocol, and whether to further support the auxiliary LBT on the receiving side is currently under discussion.

High-frequency scenarios usually use beams with high directivity for data transmission and reception. The use of highly directional beams makes channel reciprocity unsatisfactory in many cases. Furthermore, the use of highly directional beams exacerbates the hidden node problem, which further leads to significant differences in the interference received by data during transmission and reception. Therefore, it is a reasonable choice to support receiving-side assisted LBT as a handshake mechanism between network equipment and terminal equipment.

The LBT assisted by the receiving side can be applied to the process of DCI scheduling/triggering PUCCH/SRS transmission, and can also be applied to the process of DCI scheduling/triggering PUSCH transmission.

The process of DCI scheduling/triggering PUCCH/SRS transmission will be described. First, the network device can send DCI to the terminal device. The DCI can schedule/trigger PUCCH/SRS transmission. In addition, the DCI may instruct the terminal device to perform clear channel assessment (clear channel access, CCA) or extended CCA (extended CCA, eCCA). After receiving the DCI, the terminal device can execute LBT. If the LBT is successful, the terminal device may send receiving-side assistance information in PUCCH/SRS to indicate the LBT result. The network device can determine whether the terminal device passes the CCA or eCCA by detecting the scheduled PUCCH/SRS. After the terminal device passes the CCA or eCCA, the network device can send downlink data to the terminal device.

The process of DCI scheduling/triggering PUSCH transmission will be described. First, the network device can send DCI to the terminal device. The DCI can schedule/trigger PUSCH transmission. In addition, the DCI may instruct the terminal device to perform CCA or eCCA. After receiving the DCI, the terminal device can execute LBT. If the LBT is successful, the terminal device may send receiving-side assistance information in PUSCH to indicate the LBT result. The network device can determine whether the terminal device passes the CCA or the eCCA by detecting the scheduled PUSCH. After the terminal device passes the CCA or eCCA, the network device can send downlink data to the terminal device.

According to the content introduced above, if the unlicensed frequency band supports both the short control signaling transmission scheme and the LBT scheme assisted by the receiving side, before the terminal equipment sends a certain signal/channel (such as PUCCH/SRS/PUSCH) to the network equipment, The LBT process may be performed (such as the LBT scenario assisted by the receiving side), or the LBT process may not be performed (such as the short control signaling transmission scenario). After receiving the signal/channel, the network device may not be able to determine whether the terminal device has performed LBT, resulting in ambiguity in the handshake process between the network device and the terminal device. Or, in the receiver-assisted LBT scenario, if the terminal device fails to perform LBT, but still sends a signal/channel scheduled by the network device to the network device through the transmission mode of short control signaling, the network device may not be able to receive The received signal/channel determines whether the terminal device succeeds or fails to perform LBT, which will also cause ambiguity in the handshake process between the network device and the terminal device.

In order to solve the above problems, the following describes the embodiments of the present application in detail.

Fig. 2 is a schematic flowchart of a wireless communication method provided by an embodiment of the present application. The method in FIG. 2 can be executed by network devices and terminal devices. The network device and the terminal device may be, for example, the network device 110 and the terminal device 120 in FIG. 1 . Network devices and terminal devices can communicate in unlicensed frequency bands. The unlicensed frequency band mentioned here may refer to a high-frequency unlicensed frequency band with a frequency range of 52.6GHz-71GHz, or other unlicensed frequency bands.

Referring to Fig. 2, in step S210, the network device sends DCI to the terminal device.

In some embodiments, before performing step S210, the network device may first perform LBT. In other words, when the result of the LBT of the network device is that the LBT is successful, step S210 is performed again. The LBT may be a short LBT process corresponding to the CCA, or a regular LBT process corresponding to the eCCA, which is not specifically limited in this embodiment of the present application.

The DCI in step S210 may be used to schedule or trigger the first signal/channel (or the DCI is used to schedule or trigger the transmission of the first signal/channel). The first signal/channel may include, for example, one of the following signals or channels: PUCCH, SRS, and PUSCH. The format of the PUCCH may be any one of PUCCH format 0 to PUCCH format 4. The PUSCH may be a PUSCH that does not carry user plane data. For example, the PUSCH may be a PUSCH carrying LBT results.

The DCI in step S210 can also be used to trigger or instruct the terminal device to perform LBT. The LBT may be a short LBT process corresponding to the CCA, or a regular LBT process corresponding to the eCCA, which is not specifically limited in this embodiment of the present application. For example, the DCI may include information that triggers or indicates CCA or eCCA. The information triggering or indicating the CCA or eCCA can be used to trigger or instruct the terminal device to perform LBT.

Continuing to refer to FIG. 2, in step S220, the terminal device sends a first signal/channel to the network device. Before performing step S220, the terminal device may first perform LBT. The first signal/channel may include first information. The first information may be used to indicate the result of the LBT. The first information may be called receiving-side auxiliary information, or the first information may belong to receiving-side auxiliary information.

The LBT result indicated by the first information may be LBT success or LBT failure. If the LBT is successful, the terminal device may send the first signal/channel after the LBT is successful. If the LBT fails, the terminal device may not be able to send the first signal/channel at the time slot specified in the protocol. In this case, as a possible implementation, the terminal device may send the first signal/channel based on short control signaling transmission. A signal/channel. In this implementation manner, when the LBT of the terminal device fails, the network device can also accurately know the result of the LBT failure, thereby enhancing the certainty of the communication process between the network device and the terminal device. Taking the first signal/channel as the SRS as an example, if the LBT is successful, the terminal device can send the SRS at the time slot specified in the protocol, and add the first information indicating the success of the LBT to the SRS; if the LBT fails, the terminal device can send the SRS based on the short The SRS is sent in the manner of control signaling transmission, and the first information indicating LBT failure is added to the SRS. In this way, no matter whether the LBT succeeds or fails, the network device can clearly know the result of the LBT. In addition, regardless of whether LBT succeeds or fails, network devices can perform channel estimation based on SRS, which helps to improve transmission reliability.

According to the previous description, in the embodiment of the present application, when the terminal device sends the first signal/channel to the network device, it will carry the first information indicating the LBT result in the first signal/channel, so that the network device can correctly obtain As a result of the terminal equipment performing LBT, the problem of ambiguity in the handshake process between the network equipment and the terminal equipment that may be caused by the simultaneous introduction of short control signaling transmission and receiving-side assisted LBT schemes in the unlicensed frequency band is eliminated.

The first signal/channel may contain this first information explicitly or implicitly. The bearing manner of the first information on the first signal/channel may be designed accordingly according to the type of the first signal/channel. In the following, two cases are used to illustrate in detail how the first information is carried in the first signal/channel.

Case 1: The transmission of the first signal/channel is sequence-based transmission

The transmission of the first signal/channel is sequence-based transmission, which means that the transmission content of the first signal/channel is a sequence. For ease of description, the first signal/channel or the transmission content of the first signal/channel is referred to as the first sequence hereinafter. The first sequence may be, for example, a sequence corresponding to the SRS. Alternatively, the first sequence may also be a sequence corresponding to PUCCH format 0.

Before transmitting the first sequence, it is usually necessary to determine or construct the first sequence based on one or more parameters. The above-mentioned first information may be carried by a first parameter among the one or more parameters. The first parameter may be, for example, a parameter for determining a cyclic shift of the first sequence.

In some embodiments, the first parameter may include multiple values. If the values of the first parameter are different, the LBT results indicated by the first parameter are different. For example, the first parameter may include a first value and a second value. The first value may be used to indicate that the result of the terminal device performing the LBT is LBT success; the second value may be used to indicate that the result of the terminal device performing the LBT is LBT failure. If the first parameter is different, the first sequence determined or constructed based on the first parameter may be different. Therefore, in some embodiments, when the LBT is successful, the terminal device sends the first sequence corresponding to the LBT success to the network device; when the LBT fails, the terminal device sends the first sequence corresponding to the LBT failure to the network device.

Example 1.1: The first signal/channel is the PUCCH corresponding to PUCCH format 0

The PUCCH corresponding to PUCCH format 0 is a sequence-based transmission, and the transmission content is:

Among them, u and v are the base sequence respectively

The number of groups and the number of base sequences within a group, M _ZC is the sequence length, n is an index ranging from 0 to M _ZC , α is a cyclic shift, and δ is a parameter used to determine M _ZC . According to the above, by adjusting the values of α and δ, a variety of different sequences can be defined from a base sequence.

The formula for determining the cyclic shift α of PUCCH format 0 includes a parameter m _cs for determining the cyclic shift α, and the content of PUCCH transmission can be determined according to m _cs . In related technologies, the value of m _cs may have a mapping relationship with the HARQ-ACK information in the PUCCH, and the specific mapping relationship is shown in the following table:

HARQ-ACK信息HARQ-ACK information	00	11
序列循环移位αsequence cyclic shift α	m _cs＝0 m _cs =0	m _cs＝6 m _cs =6

After receiving the PUCCH, the network device can determine the HARQ-ACK information fed back by the terminal device according to the value of m _cs . For example, when m _cs =6, the network device determines that the feedback from the terminal device is ACK; when m _cs =0, the network device determines that the feedback from the terminal device is a negative acknowledgment (negative acknowledgment, NACK). If the network device and the terminal device transmit short control signaling, and the PUCCH corresponding to PUCCH format 0 is transmitted, the terminal device sets the value of m _cs to 0 or 6 according to the actual situation, so that the network device can determine the PUCCH transmission Whether the content is NACK or ACK.

Similarly, in the scenario where the receiving side assists LBT, m _cs may be used as the first parameter mentioned above to carry the first information indicating the LBT result. For example, the value of m _cs can have a mapping relationship with the LBT result as shown in the following table:

LBT结果LBT results	失败fail	成功success
序列循环移位sequence cyclic shift	m _cs＝3 m _cs =3	m _cs＝9 m _cs =9

Wherein, the value 9 of m _cs is the first value mentioned above, and the value 3 of m _cs is the second value mentioned above. After the network device receives the PUCCH corresponding to PUCCH format 0, it can determine the result of the terminal device performing LBT according to the value of m _cs . For example, when m _cs =3, the network device determines that the LBT result is LBT failure; when m _cs =9, the network device determines that the LBT result is LBT success.

Example 1.2: The first signal/channel is SRS

SRS is a sequence-based transmission, and the transmission content of the antenna port p _i that sends the SRS is:

Among them, u and v are the base sequence respectively

the number of groups and the number of base sequences within a group,

is the length of the SRS sequence, and n is a value between 0 and

The index of , α _i is the cyclic shift corresponding to the antenna port p _i , δ is used to determine

parameters. α _i can be determined as follows:

in,

Indicates a parameter configured by a network device through a high-level parameter for determining a cyclic shift α _i ;

Indicates the parameters for determining the cyclic shift α _i corresponding to the antenna port p _i ;

Indicates the maximum number of cyclic shifts,

may be specified by agreement;

Indicates the number of antenna ports.

Similar to Example 1.1, a first parameter m _cs may be further introduced in the determination formula of the cyclic shift α _i to carry the first information to indicate LBT success or LBT failure. For example, the determination formula of α _i can be modified into the following form:

After adopting the above formula, the mapping relationship between the value of m _cs and the LBT result can be established. For example, the mapping relationship between the value of m _cs and the LBT result can be as shown in the following table:

LBT结果LBT results	失败fail	成功success
序列循环移位sequence cyclic shift	m _cs＝0 m _cs =0	m _cs＝3 m _cs =3

Wherein, the value 3 of m _cs is the first value mentioned above, and the value 0 of m _cs is the second value mentioned above. After receiving the SRS, the network device can determine the result of the terminal device performing LBT according to the m _cs . For example, when m _cs =0, the network device determines that the LBT result is LBT failure; when m _cs =3, the network device determines that the LBT result is LBT success. In this example, no matter whether the LBT succeeds or fails, the network device can receive the SRS sent by the terminal device, and perform channel estimation based on the SRS, which helps to improve transmission reliability.

Of course, if the SRS is transmitted between the network device and the terminal device based on the short control signaling, the SRS can still be sent using the sequence determination method specified in the traditional protocol without introducing the parameter m _cs .

Case 2: The first signal/channel is a signal/channel containing one or more information fields

Different from case 1, in case 2, the transmission content of the first signal/channel is not a sequence, but information carried or carried in one or more information fields. For example, the first signal/channel may be a PUCCH corresponding to a PUCCH format other than PUCCH format 0. Alternatively, the first signal/channel is a PUSCH that does not carry user plane data, such as a PUSCH that carries LBT results.

In case 2, an information field for indicating (or specifically indicating) the result of LBT can be added to the first signal/channel (of course, in some embodiments, the first signal/channel can also be multiplexed existing information field), and use this information field to carry the first information indicating the result of the LBT. For example, N new bits (N greater than or equal to 1) may be introduced into the first signal/channel, and the LBT result may be indicated according to the values of the N bits. For example, N bits may include a first value and a second value. The first value may be used to indicate that the result of the terminal device performing the LBT is LBT success; the second value may be used to indicate that the result of the terminal device performing the LBT is LBT failure. Taking N=1 as an example, when the value of this 1 bit is 1 (corresponding to the first value mentioned above), it indicates that the result of LBT is LBT success; when the value of this 1 bit is 0 (corresponding to When the second value mentioned above), indicates that the result of LBT is LBT failure.

For ease of understanding, the following takes the first signal/channel as PUCCH, SRS, and PUSCH without user plane data as examples, and after applying the embodiment of the present application, the transmission scheme based on short control signaling and LBT based on receiving side assistance The implementation of the scheme is described in detail.

Embodiment 1: The first signal/channel is PUCCH

Fig. 3a shows the process of transmitting DCI and PUCCH based on short control signaling in the high-frequency unlicensed frequency band. It can be seen from Fig. 3a that neither the network device nor the terminal device needs to perform LBT before transmitting DCI and PUCCH.

Fig. 3b shows the LBT scheme in which the network device and the terminal device implement receiving-side assistance in the high-frequency unlicensed frequency band. It can be seen from Fig. 3b that before sending DCI and PUCCH, the network device and the terminal device need to perform LBT respectively. In addition, the terminal device will carry the above-mentioned first information in the PUCCH, so as to realize the LBT process assisted by the receiving side.

The process in Figure 3b can specifically be performed in the following manner:

Step 1: The network device executes LBT, and sends DCI to schedule/trigger PUCCH transmission after the LBT is successful.

Step 2: The terminal device executes LBT, and sends a PUCCH after the LBT is successful, and the PUCCH carries the aforementioned first information (receiving side auxiliary information). If the PUCCH is a PUCCH corresponding to PUCCH format 0, then the manner in which the first information is carried in the PUCCH may refer to Example 1.1 in the aforementioned case 1. If the PUCCH is a PUCCH corresponding to PUCCH formats 1 to 4, the manner in which the first information is carried in the PUCCH may refer to the aforementioned case 2.

Step 3: The network device receives the PUCCH, and determines the result of the terminal device performing LBT according to the first information in the PUCCH.

Step 4: After determining that the LBT of the terminal device is successful, the network device sends a physical downlink shared channel (PDSCH) to the terminal device.

During the actual interaction process, the terminal device may choose to execute the flow shown in FIG. 3a or the flow shown in FIG. 3b according to the instruction of the DCI. For example, when the DCI sent by the network device does not instruct the network device to perform LBT (that is, the non-receiving-side auxiliary LBT process is performed between the network device and the terminal device), the terminal device can transmit the LBT through short control signaling after receiving the DCI In this way, the PUCCH is directly sent. The content sent by the PUCCH may be conventional uplink control information, including HARQ-ACK information and the like. As another example, when the DCI sent by the network device instructs the terminal device to perform LBT (that is, the receiving-side auxiliary LBT process is performed between the network device and the terminal device), the terminal device first performs LBT after receiving the DCI, and then Send PUCCH after success. The content sent by the PUCCH may include the first information, and the first information indicates that the LBT is successful; if the LBT of the terminal device fails, causing the terminal device to fail to send the PUCCH at the time slot specified in the protocol, the terminal device can pass the short control signaling The PUCCH is sent in a transmission manner, and the sent content includes first information, and the first information indicates LBT failure.

It can be seen that when the terminal device sends the PUCCH to the network device, it will carry the first information used to indicate the LBT result in the PUCCH, so that the network device can correctly obtain the result of the LBT performed by the terminal device, and eliminate the simultaneous The introduction of the short control signaling transmission and receiving-side assisted LBT scheme may cause ambiguity in the handshake process between the network device and the terminal device.

Embodiment 2: The first signal/channel is SRS

Fig. 4a shows the process of transmitting DCI and SRS based on short control signaling in a high-frequency unlicensed frequency band. It can be seen from Fig. 4a that neither the network device nor the terminal device needs to perform LBT before transmitting DCI and SRS.

Fig. 4b shows the LBT scheme in which the network device and the terminal device implement receiving-side assistance in the high-frequency unlicensed frequency band. It can be seen from Fig. 4b that before sending DCI and SRS, the network device and the terminal device need to perform LBT respectively. In addition, the terminal device will carry the above-mentioned first information in the SRS, so as to realize the LBT process assisted by the receiving side.

The process in Figure 4b can specifically be performed in the following manner:

Step 1: The network device executes LBT, and sends DCI to schedule/trigger SRS transmission after the LBT is successful.

Step 2: The terminal device executes LBT, and sends an SRS after the LBT is successful, and the SRS carries the aforementioned first information (receiving side auxiliary information). For the manner in which the first information is carried in the SRS, reference may be made to Example 1.2 in Case 1 mentioned above.

Step 3: The network device receives the SRS, and determines the result of the terminal device performing LBT according to the first information in the SRS.

Step 4: After the network device determines that the LBT of the terminal device is successful, it sends the PDSCH to the terminal device.

During the actual interaction process, the terminal device may choose to execute the flow shown in FIG. 4a or the flow shown in FIG. 4b according to the instruction of the DCI. For example, when the DCI sent by the network device does not instruct the network device to perform LBT (that is, the non-receiving-side assisted LBT process is performed between the network device and the terminal device), the terminal device can transmit via short control signaling after receiving the DCI In this way, the SRS is sent directly, and the cyclic shift of the SRS can be determined in a traditional way. As another example, when the DCI sent by the network device instructs the terminal device to perform LBT (that is, the receiving-side auxiliary LBT process is performed between the network device and the terminal device), the terminal device first performs LBT after receiving the DCI, and then After the success, the SRS is sent, and the cyclic shift of the SRS can be determined by using the m _cs corresponding to the success of the LBT. If the LBT of the terminal equipment fails, causing the terminal equipment to fail to send the SRS at the time slot position specified in the protocol, the terminal equipment can send the SRS through short control signaling transmission, and the cyclic shift of the SRS can be the m corresponding to the LBT failure. _cs OK. It can be seen that, in this example, no matter whether the LBT succeeds or fails, the network device can receive the SRS sent by the terminal device, and perform channel estimation according to the SRS.

It can be seen that when the terminal device sends an SRS to the network device, it will carry the first information used to indicate the LBT result in the SRS, so that the network device can correctly obtain the result of the LBT performed by the terminal device, eliminating the simultaneous The introduction of the short control signaling transmission and receiving-side assisted LBT scheme may cause ambiguity in the handshake process between the network device and the terminal device.

Embodiment 3: The first signal/channel is PUSCH

The PUSCH in FIG. 5 may be a PUSCH that does not carry user plane data. Fig. 5a shows the process of transmitting DCI and PUSCH based on short control signaling in the high-frequency unlicensed frequency band. It can be seen from Fig. 5a that neither the network device nor the terminal device needs to perform LBT before transmitting DCI and PUSCH.

Fig. 5b shows a LBT scheme in which the network device and the terminal device perform receiver-side assistance in the high-frequency unlicensed frequency band. It can be seen from Fig. 5b that before sending DCI and PUSCH, the network device and the terminal device need to perform LBT respectively. In addition, the terminal device will carry the above-mentioned first information in the PUSCH, so as to realize the LBT process assisted by the receiving side.

The process in Figure 5b can specifically be performed in the following manner:

Step 1: The network device executes LBT, and sends DCI to schedule/trigger PUSCH transmission after the LBT is successful.

Step 2: The terminal device executes LBT, and sends a PUSCH after the LBT is successful, and the PUSCH carries the aforementioned first information (receiving side auxiliary information). For the manner in which the first information is carried in the SRS, reference may be made to case 2 in case 1 mentioned above.

Step 3: The network device receives the PUSCH, and determines the result of the terminal device performing LBT according to the first information in the PUSCH.

During the actual interaction process, the terminal device may choose to execute the flow shown in FIG. 5a or the flow shown in FIG. 5b according to the instruction of the DCI. For example, when the DCI sent by the network device does not instruct the network device to perform LBT (that is, the non-receiving-side auxiliary LBT process is performed between the network device and the terminal device), the terminal device can transmit the LBT through short control signaling after receiving the DCI In this way, PUSCH is sent directly. The content sent by the PUSCH may be conventional uplink control information, such as HARQ-ACK information, CSI, and message 3 (Msg3). As another example, when the DCI sent by the network device instructs the terminal device to perform LBT (that is, the receiving-side auxiliary LBT process is performed between the network device and the terminal device), the terminal device first performs LBT after receiving the DCI, and then Send PUSCH after success. The content sent by the PUSCH may include the first information, and the first information indicates that the LBT is successful; if the LBT of the terminal device fails, causing the terminal device to fail to send the PUSCH at the time slot specified in the protocol, the terminal device can pass the short control signaling The PUSCH is sent in a transmission manner, and the sent content includes first information, and the first information indicates LBT failure.

It can be seen that when the terminal device sends the PUSCH to the network device, it will carry the first information used to indicate the LBT result in the PUSCH, so that the network device can correctly obtain the result of the LBT performed by the terminal device, eliminating the simultaneous The introduction of the short control signaling transmission and receiving-side assisted LBT scheme may cause ambiguity in the handshake process between the network device and the terminal device.

It should be noted that the above-mentioned Embodiment 1 to Embodiment 3 all include the step of the network device performing LBT (refer to Step 1 in Embodiment 1 to Embodiment 3), but the embodiment of the present application is not limited thereto. In some embodiments, the network device can also directly send DCI without performing LBT, that is, whether the network device performs LBT can be selected according to actual conditions.

The above describes in detail how the terminal device carries the first information of the result of performing the LBT in the first signal/channel with reference to FIG. 2 to FIG. 5 . However, the embodiment of the present application is not limited thereto. In the receiving-side assisted LBT solution, since the network device will explicitly instruct the terminal device to perform LBT through the DCI, that is, the behavior of the terminal device to perform LBT is known to the network device. In this case, the terminal device may also decide whether to send the first signal/channel (or whether to send the receiving-side auxiliary information) according to the LBT result. Correspondingly, the network device can determine whether the result of the terminal device performing LBT is LBT success or LBT failure according to whether the first signal/channel (receiving side auxiliary information) is detected at the time slot position specified in the protocol (or scheduled). This implementation will be described in detail below with reference to FIG. 6 .

FIG. 6 is a schematic flowchart of a wireless communication method provided by an embodiment of the present application. The method in FIG. 6 can be executed by a terminal device. The terminal device may be, for example, the terminal device 120 in FIG. 1 . Terminal devices can communicate with network devices in unlicensed frequency bands. The unlicensed frequency band mentioned here may refer to a high-frequency unlicensed frequency band with a frequency range of 52.6GHz-71GHz, or other unlicensed frequency bands.

Referring to Fig. 6, in step S610, the terminal device receives the DCI sent by the network device. The DCI may be used to schedule or trigger the first signal/channel (or the DCI is used to schedule or trigger the transmission of the first signal/channel). The first signal/channel may include, for example, one of the following signals or channels: PUCCH, SRS, and PUSCH. The format of the PUCCH may be any one of PUCCH format 0 to PUCCH format 4. The PUSCH may be a PUSCH that does not carry user plane data. For example, the PUSCH may be a PUSCH carrying HARQ-ACK information, a PUSCH carrying CSI, or a PUSCH carrying message 3 .

The DCI in step S610 can also be used to trigger or instruct the terminal device to perform LBT. For example, the DCI may include information that triggers or indicates CCA or eCCA. The information triggering or indicating the CCA or eCCA can be used to trigger or instruct the terminal device to perform LBT.

In step S620a, if the result of the LBT is that the LBT is successful, the terminal device sends a first signal/channel to the network device. The first signal/channel may carry first information indicating LBT success (or receiving side auxiliary information), for example, the first information may be ACK information carried by PUCCH, SRS, or ACK information carried by PUSCH.

In step S620b, if the result of the LBT is that the LBT fails, the terminal device does not send the first signal/channel to the network device.

Correspondingly, the network device will detect the first signal/channel. If the network device detects the first signal/channel, it is determined that the terminal device performs LBT successfully; if the network device does not detect the first signal/channel, it is determined that the terminal device fails to perform LBT.

It can be seen that, in the receive-side assisted LBT solution provided by the embodiment of the present application, the network device can correctly obtain the result of the terminal device performing LBT based on whether the first signal/channel is detected, and eliminates the simultaneous introduction of short bursts in the unlicensed frequency band. The problem of ambiguity in the handshake process between the network device and the terminal device may be caused by the LBT scheme assisted by the control signaling transmission and the receiving side.

Fig. 7a shows a scheme for transmitting DCI and a first signal/channel based on short control signaling in a high-frequency unlicensed frequency band. The first signal/channel may be any one of the aforementioned PUCCH, SRS and PUSCH. The first signal/channel may also be called uplink short control signaling. It can be seen from Fig. 7a that neither the network device nor the terminal device needs to perform LBT before transmitting the DCI and the first signal/channel.

Fig. 7b shows the LBT scheme in which the network device and the terminal device implement receiving-side assistance in the high-frequency unlicensed frequency band. It can be seen from FIG. 7b that before sending the DCI and the first signal/channel, the network device and the terminal device perform LBT respectively (of course, in some embodiments, the network device may not perform LBT).

If the LBT is successful, the terminal device can help the network device to confirm that the terminal device successfully performs LBT by sending the first signal/channel (or auxiliary information on the receiving side). After the network device receives the first signal/channel, it can confirm that the network device executes LBT successfully.

If the LBT fails, the terminal device may not send the first signal/channel. If the network device fails to detect the first signal/channel (or receiving-side auxiliary information) at the time slot specified by the protocol (or scheduled by the network device), it can be considered that the network device fails to perform LBT.

The method embodiment of the present application is described in detail above with reference to FIG. 1 to FIG. 7 , and the device embodiment of the present application is described in detail below in conjunction with FIG. 8 to FIG. 12 . It should be understood that the descriptions of the method embodiments correspond to the descriptions of the device embodiments, therefore, for parts not described in detail, reference may be made to the foregoing method embodiments.

FIG. 8 is a schematic structural diagram of a terminal device provided by an embodiment of the present application. The terminal device 800 in FIG. 8 includes a receiving module 810 and a sending module 820 .

The receiving module 810 may be configured to receive DCI sent by the network device. The DCI is used to schedule a first signal/channel, and the DCI is used to instruct the terminal device to perform LBT.

The sending module 820 may be configured to send the first signal/channel to the network device. The first signal/channel includes first information. The first information is used to indicate the result of the LBT.

Optionally, the first signal/channel is a first sequence, the first sequence has a first parameter for determining the first sequence, and the first parameter is used to carry the first information.

Optionally, the first parameter is a parameter used to determine a cyclic shift of the first sequence.

Optionally, the first signal/channel is an SRS; or, the first signal/channel is a PUCCH corresponding to PUCCH format 0.

Optionally, the first parameter includes a first value and a second value, the first value is used to indicate that the LBT succeeds, and the second value is used to indicate that the LBT fails.

Optionally, the first signal/channel includes an information field for indicating the result of the LBT, and the first information is included in the information field.

Optionally, the first signal/channel is a PUCCH corresponding to a PUCCH format other than PUCCH format 0; or, the first signal/channel is a PUSCH that does not carry user plane data.

Optionally, the information field includes N bits, and the values of the N bits include a first value and a second value, the first value is used to indicate that the LBT is successful, and the second The value is used to indicate that the LBT fails, where N is an integer greater than or equal to 1.

Optionally, the first signal/channel is one of the following: PUCCH corresponding to PUCCH format 1; PUCCH corresponding to PUCCH format 2; PUCCH corresponding to PUCCH format 3; PUCCH corresponding to PUCCH format 4; The result of the PUSCH.

Optionally, when the result of the LBT indicates that the terminal device fails to perform the LBT, the transmission of the first signal/channel is based on short control signaling.

FIG. 9 is a schematic structural diagram of a terminal device provided by an embodiment of the present application. The terminal device 900 in FIG. 9 includes a receiving module 910 and a sending module 920 .

The receiving module 910 is configured to receive the DCI sent by the network device. The DCI is used to schedule a first signal/channel, and the DCI is used to instruct the terminal device to perform LBT.

The sending module 920 is configured to send the first signal/channel to the network device if the result of the LBT is LBT success; if the result of the LBT is LBT failure, then not send the first signal/channel to the network device first signal/channel.

Optionally, the first signal/channel is one of the following: PUCCH, SRS, and PUSCH that does not carry user plane data.

Optionally, the PUSCH not carrying user plane data includes: a PUSCH carrying HARQ-ACK information; a PUSCH carrying CSI; or a PUSCH carrying message 3.

FIG. 10 is a schematic structural diagram of a network device provided by an embodiment of the present application. The network device 1000 in FIG. 10 includes a sending module 1010 and a receiving module 1020 .

The sending module 1010 is configured to send the DCI to the terminal device. The DCI is used to schedule a first signal/channel, and the DCI is used to instruct the terminal device to perform LBT.

The receiving module 1020 is configured to receive the first signal/channel sent by the terminal device. The first signal/channel includes first information indicating the result of the LBT.

FIG. 11 is a schematic structural diagram of a network device provided by an embodiment of the present application. The network device 1100 in FIG. 11 includes a sending module 1110 and a determining module 1120 .

The sending module 1110 is configured to send the DCI to the terminal device. The DCI is used to schedule a first signal/channel, and the DCI is used to instruct the terminal device to perform LBT.

The determining module 1120 is configured to determine that the result of the LBT is that the LBT is successful if the network device receives the first signal/channel; if the network device does not receive the first signal/channel, determine the LBT The result is LBT failure.

Fig. 12 is a schematic structural diagram of a device according to an embodiment of the present application. The dashed line in Figure 12 indicates that the unit or module is optional. The apparatus 1200 may be used to implement the methods described in the foregoing method embodiments. Apparatus 1200 may be a chip, a terminal device or a network device.

Apparatus 1200 may include one or more processors 1210 . The processor 1210 can support the device 1200 to implement the methods described in the foregoing method embodiments. The processor 1210 may be a general purpose processor or a special purpose processor. For example, the processor may be a central processing unit (central processing unit, CPU). Alternatively, the processor can also be other general-purpose processors, digital signal processors (digital signal processors, DSPs), application specific integrated circuits (application specific integrated circuits, ASICs), off-the-shelf programmable gate arrays (field programmable gate arrays, FPGAs) Or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.

Apparatus 1200 may also include one or more memories 1220 . A program is stored in the memory 1220, and the program can be executed by the processor 1210, so that the processor 1210 executes the methods described in the foregoing method embodiments. The memory 1220 may be independent from the processor 1210 or may be integrated in the processor 1210 .

The apparatus 1200 may also include a transceiver 1230 . The processor 1210 can communicate with other devices or chips through the transceiver 1230 . For example, the processor 1210 may send and receive data with other devices or chips through the transceiver 1230 .

The embodiment of the present application also provides a computer-readable storage medium for storing programs. The computer-readable storage medium can be applied to the terminal device or the network device provided in the embodiments of the present application, and the program enables the computer to execute the methods performed by the terminal device or the network device in the various embodiments of the present application.

The embodiment of the present application also provides a computer program product. The computer program product includes programs. The computer program product can be applied to the terminal device or the network device provided in the embodiments of the present application, and the program enables the computer to execute the methods performed by the terminal device or the network device in the various embodiments of the present application.

The embodiment of the present application also provides a computer program. The computer program can be applied to the terminal device or the network device provided in the embodiments of the present application, and the computer program enables the computer to execute the methods performed by the terminal device or the network device in the various embodiments of the present application.

It should be understood that in this embodiment of the present application, "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B according to A does not mean determining B only according to A, and B may also be determined according to A and/or other information.

It should be understood that the term "and/or" in this article is only an association relationship describing associated objects, which means that there may be three relationships, for example, A and/or B may mean: A exists alone, and A and B exist at the same time , there are three cases of B alone. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

It should be understood that, in various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the order of execution, and the execution order of the processes should be determined by their functions and internal logic, and should not be used in the embodiments of the present application. The implementation process constitutes any limitation.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods may be implemented in other ways. For example, the device 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 can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

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

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

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

The above is only a specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the application. Should be covered within the protection scope of this application. Therefore, the protection scope of the present application should be determined by the protection scope of the claims.

Claims

A method for wireless communication, comprising:

The terminal device receives the downlink control information DCI sent by the network device, the DCI is used to schedule the first signal/channel, and the DCI is used to instruct the terminal device to perform listen-before-talk LBT;

The terminal device sends the first signal/channel to the network device, the first signal/channel includes first information, and the first information is used to indicate the result of the LBT.
The method according to claim 1, wherein the first signal/channel is a first sequence, the first sequence has a first parameter for determining the first sequence, and the first parameter is used to carry the first information.
The method according to claim 2, wherein the first parameter is a parameter for determining a cyclic shift of the first sequence.
The method according to claim 3, wherein the first signal/channel is a Sounding Reference Signal (SRS); or, the first signal/channel is a PUCCH corresponding to format 0 of a Physical Uplink Control Channel (PUCCH).
The method according to any one of claims 2-4, wherein the first parameter includes a first value and a second value, and the first value is used to indicate that the LBT is successful, so The second value is used to indicate that the LBT fails.
The method according to claim 1, characterized in that said first signal/channel contains an information field indicating the result of said LBT, said first information being contained in said information field.
The method according to claim 6, wherein the first signal/channel is a PUCCH corresponding to a PUCCH format other than PUCCH format 0; or, the first signal/channel does not carry user plane data The physical uplink shared channel PUSCH.
The method according to claim 7, wherein the first signal/channel is one of the following: PUCCH corresponding to PUCCH format 1; PUCCH corresponding to PUCCH format 2; PUCCH corresponding to PUCCH format 3; PUCCH format 4 The corresponding PUCCH; the PUSCH carrying the result of the LBT.
The method according to any one of claims 6-8, wherein the information field includes N bits, and the values of the N bits include a first value and a second value, and the first One value is used to indicate that the LBT is successful, and the second value is used to indicate that the LBT fails, where N is an integer greater than or equal to 1.
The method according to any one of claims 1-9, characterized in that, in the case that the result of the LBT indicates that the terminal device fails to perform the LBT, the transmission of the first signal/channel is based on Transmission of short control signaling.
A method for wireless communication, comprising:

The terminal device receives the downlink control information DCI sent by the network device, the DCI is used to schedule the first signal/channel, and the DCI is used to instruct the terminal device to perform listen-before-talk LBT;

If the result of the LBT is that the LBT is successful, the terminal device sends the first signal/channel to the network device;

If the result of the LBT is LBT failure, the terminal device does not send the first signal/channel to the network device.
The method according to claim 11, wherein the first signal/channel is one of the following: a Physical Uplink Control Channel (PUCCH), a Sounding Reference Signal (SRS), and a Physical Uplink Shared Channel (PUSCH) that does not carry user plane data.
The method according to claim 12, wherein the PUSCH that does not carry user plane data includes: a PUSCH that carries hybrid automatic repeat request-confirmation HARQ-ACK information; a PUSCH that carries channel state information CSI; or, a PUSCH that carries PUSCH for message 3.
A method for wireless communication, comprising:

The network device sends downlink control information DCI to the terminal device, the DCI is used to schedule the first signal/channel, and the DCI is used to instruct the terminal device to perform listen before talk LBT;

The network device receives the first signal/channel sent by the terminal device, where the first signal/channel includes first information, and the first information is used to indicate the result of the LBT.
The method according to claim 14, wherein the first signal/channel is a first sequence, the first sequence has a first parameter for determining the first sequence, and the first parameter is used to carry the first information.
The method according to claim 15, wherein the first parameter is a parameter for determining a cyclic shift of the first sequence.
The method according to claim 16, wherein the first signal/channel is a Sounding Reference Signal (SRS); or, the first signal/channel is a PUCCH corresponding to format 0 of a Physical Uplink Control Channel (PUCCH).
The method according to any one of claims 15-17, wherein the first parameter includes a first value and a second value, and the first value is used to indicate that the LBT is successful, so The second value is used to indicate that the LBT fails.
The method according to claim 14, characterized in that said first signal/channel contains an information field indicating the result of said LBT, said first information being contained in said information field.
The method according to claim 19, wherein the first signal/channel is a PUCCH corresponding to a PUCCH format other than PUCCH format 0; or, the first signal/channel does not carry user plane data The physical uplink shared channel PUSCH.
The method according to claim 20, wherein the first signal/channel is one of the following: PUCCH corresponding to PUCCH format 1; PUCCH corresponding to PUCCH format 2; PUCCH corresponding to PUCCH format 3; PUCCH format 4 The corresponding PUCCH; the PUSCH carrying the result of the LBT.
The method according to any one of claims 19-21, wherein the information field includes N bits, and the values of the N bits include a first value and a second value, and the first One value is used to indicate that the LBT is successful, and the second value is used to indicate that the LBT fails, where N is an integer greater than or equal to 1.
The method according to any one of claims 14-22, characterized in that in the case that the result of the LBT indicates that the terminal device failed to perform the LBT, the transmission of the first signal/channel is based Transmission of short control signaling.
A method for wireless communication, comprising:

The network device sends downlink control information DCI to the terminal device, the DCI is used to schedule the first signal/channel, and the DCI is used to instruct the terminal device to perform listen before talk LBT;

If the network device receives the first signal/channel, the network device determines that the result of the LBT is that the LBT is successful;

If the network device does not receive the first signal/channel, the network device determines that the result of the LBT is an LBT failure.
The method according to claim 24, wherein the first signal/channel is one of the following: a physical uplink control channel (PUCCH), a sounding reference signal (SRS), and a physical uplink shared channel (physical uplink) that does not carry user plane data Shared channel PUSCH.
The method according to claim 25, wherein the PUSCH that does not carry user plane data includes: a PUSCH that carries hybrid automatic repeat request-confirmation HARQ-ACK information; a PUSCH that carries channel state information CSI; or, a PUSCH that carries PUSCH for message 3.
A terminal device, characterized in that it includes:

A receiving module, configured to receive downlink control information DCI sent by the network device, the DCI is used to schedule the first signal/channel, and the DCI is used to instruct the terminal device to perform listen before talk LBT;

A sending module, configured to send the first signal/channel to the network device, where the first signal/channel includes first information, and the first information is used to indicate the result of the LBT.
The terminal device according to claim 27, wherein the first signal/channel is a first sequence, and the first sequence has a first parameter for determining the first sequence, and the first parameter used to carry the first information.
The terminal device according to claim 28, wherein the first parameter is a parameter for determining a cyclic shift of the first sequence.
The terminal device according to claim 29, wherein the first signal/channel is a Sounding Reference Signal (SRS); or, the first signal/channel is a PUCCH corresponding to format 0 of a Physical Uplink Control Channel (PUCCH).
The terminal device according to any one of claims 28-30, wherein the first parameter includes a first value and a second value, and the first value is used to indicate that the LBT is successful, The second value is used to indicate that the LBT fails.
The terminal device according to claim 27, characterized in that said first signal/channel comprises an information field indicating the result of said LBT, said first information being contained in said information field.
The terminal device according to claim 32, wherein the first signal/channel is a PUCCH corresponding to a PUCCH format other than PUCCH format 0; or, the first signal/channel is a PUCCH that does not carry a user plane Data physical uplink shared channel PUSCH.
The terminal device according to claim 33, wherein the first signal/channel is one of the following: PUCCH corresponding to PUCCH format 1; PUCCH corresponding to PUCCH format 2; PUCCH corresponding to PUCCH format 3; PUCCH PUCCH corresponding to format 4; PUSCH carrying the result of the LBT.
The terminal device according to any one of claims 32-34, wherein the information field includes N bits, and the values of the N bits include a first value and a second value, and the The first value is used to indicate that the LBT is successful, and the second value is used to indicate that the LBT fails, where N is an integer greater than or equal to 1.
The terminal device according to any one of claims 27-35, characterized in that, when the result of the LBT indicates that the terminal device failed to perform the LBT, the transmission of the first signal/channel is Transmission based on short control signaling.
A terminal device, characterized in that it includes:

A receiving module, configured to receive downlink control information DCI sent by the network device, the DCI is used to schedule the first signal/channel, and the DCI is used to instruct the terminal device to perform listen before talk LBT;

A sending module, configured to send the first signal/channel to the network device if the result of the LBT is LBT success; if the result of the LBT is LBT failure, not send the first signal/channel to the network device signal/channel.
The terminal device according to claim 37, wherein the first signal/channel is one of the following: a physical uplink control channel (PUCCH), a sounding reference signal (SRS), and a physical uplink shared channel (PUSCH) that does not carry user plane data .
The terminal device according to claim 38, wherein the PUSCH not carrying user plane data comprises: a PUSCH carrying hybrid automatic repeat request-confirmation HARQ-ACK information; a PUSCH carrying channel state information CSI; or, PUSCH carrying message 3.
A network device, characterized in that it includes:

A sending module, configured to send downlink control information DCI to the terminal device, where the DCI is used to schedule the first signal/channel, and the DCI is used to instruct the terminal device to perform listen-before-talk LBT;

A receiving module, configured to receive the first signal/channel sent by the terminal device, where the first signal/channel includes first information, and the first information is used to indicate the result of the LBT.
The network device according to claim 40, wherein the first signal/channel is a first sequence, and the first sequence has a first parameter for determining the first sequence, and the first parameter used to carry the first information.
The network device according to claim 41, wherein the first parameter is a parameter for determining a cyclic shift of the first sequence.
The network device according to claim 42, wherein the first signal/channel is a Sounding Reference Signal (SRS); or, the first signal/channel is a PUCCH corresponding to format 0 of a Physical Uplink Control Channel (PUCCH).
The network device according to any one of claims 41-43, wherein the first parameter includes a first value and a second value, and the first value is used to indicate that the LBT is successful, The second value is used to indicate that the LBT fails.
The network device according to claim 40, wherein said first signal/channel includes an information field indicating the result of said LBT, said first information being included in said information field.
The network device according to claim 45, wherein the first signal/channel is a PUCCH corresponding to a PUCCH format other than PUCCH format 0; or, the first signal/channel is a PUCCH that does not carry a user plane Data physical uplink shared channel PUSCH.
The network device according to claim 46, wherein the first signal/channel is one of the following: PUCCH corresponding to PUCCH format 1; PUCCH corresponding to PUCCH format 2; PUCCH corresponding to PUCCH format 3; PUCCH PUCCH corresponding to format 4; PUSCH carrying the result of the LBT.
The network device according to any one of claims 45-47, wherein the information field includes N bits, and the values of the N bits include a first value and a second value, and the The first value is used to indicate that the LBT is successful, and the second value is used to indicate that the LBT fails, where N is an integer greater than or equal to 1.
The network device according to any one of claims 40-48, wherein when the result of the LBT indicates that the terminal device fails to perform the LBT, the transmission of the first signal/channel is Transmission based on short control signaling.
A network device, characterized in that it includes:

A sending module, configured to send downlink control information DCI to the terminal device, where the DCI is used to schedule the first signal/channel, and the DCI is used to instruct the terminal device to perform listen-before-talk LBT;

A determining module, configured to, if the network device receives the first signal/channel, determine that the result of the LBT is that the LBT is successful; if the network device does not receive the first signal/channel, determine the LBT The result is LBT failure.
The network device according to claim 50, wherein the first signal/channel is one of the following: a physical uplink control channel PUCCH, a sounding reference signal SRS, and a physical uplink shared channel PUSCH that does not carry user plane data .
The network device according to claim 51, wherein the PUSCH that does not carry user plane data includes: a PUSCH that carries hybrid automatic repeat request-confirmation HARQ-ACK information; a PUSCH that carries channel state information CSI; or, PUSCH carrying message 3.
A terminal device, characterized in that it includes a memory and a processor, the memory is used to store a program, and the processor is used to call the program in the memory to execute the program described in any one of claims 1-13. Methods.
A network device, characterized by comprising a memory and a processor, the memory is used to store a program, and the processor is used to call the program in the memory to execute any one of claims 14-26 Methods.
An apparatus, characterized by comprising a processor, configured to call a program from a memory to execute the method according to any one of claims 1-13.
An apparatus, characterized by comprising a processor, configured to call a program from a memory to execute the method according to any one of claims 14-26.
A chip, characterized by comprising a processor, configured to call a program from a memory, so that a device installed with the chip executes the method according to any one of claims 1-13.
A chip, characterized by comprising a processor for calling a program from a memory, so that a device installed with the chip executes the method according to any one of claims 14-26.
A computer-readable storage medium, characterized in that a program is stored thereon, and the program causes a computer to execute the method according to any one of claims 1-13.
A computer-readable storage medium, characterized in that a program is stored thereon, and the program causes a computer to execute the method according to any one of claims 14-26.
A computer program product, characterized by comprising a program, the program causes a computer to execute the method according to any one of claims 1-13.
A computer program product, characterized in that it comprises a program, the program causes a computer to execute the method according to any one of claims 14-26.
A computer program, characterized in that the computer program causes a computer to execute the method according to any one of claims 1-13.
A computer program, characterized in that the computer program causes a computer to execute the method according to any one of claims 14-26.