WO2023274314A1

WO2023274314A1 - Data transmission method and related apparatus

Info

Publication number: WO2023274314A1
Application number: PCT/CN2022/102463
Authority: WO
Inventors: 刘星
Original assignee: 展讯通信（上海）有限公司
Priority date: 2021-06-30
Filing date: 2022-06-29
Publication date: 2023-01-05
Also published as: CN115551086A

Abstract

Disclosed in the embodiments of the present application are a data transmission method and a related apparatus. The method comprises: a terminal device detecting that a first resource and a second resource overlap in a time domain, wherein the first resource is a resource occupied by a first link which is used for bearing first data, the second resource is a resource occupied by a second link which is used for bearing second data, and the first resource is located on an unlicensed frequency band; and when listen before talk (LBT) monitoring of the first link succeeds, the terminal device sending the first data on the first link. By means of the method, a terminal device determines, according to an LBT monitoring result of a first link, whether to send first data or second data, such that a resource waste, which is caused by both the first data and the second data not being sent since whether to send the first data or the second data is determined according to the priorities of the first data and the second data, can be avoided, thereby improving the resource utilization rate.

Description

A data transmission method and related device

technical field

The present application relates to the technical field of communications, and in particular to a data transmission method and a related device.

Background technique

In cellular network communication, a terminal device can send uplink data to a base station on an uplink (UL), and send sidelink data (sidelink data) to another terminal device on a sidelink (SL). ).

However, for a terminal device that only supports data transmission on one link at a time, the terminal device cannot simultaneously transmit data on UL and SL. Therefore, in the case that the data transmission capability of the terminal equipment is limited, how to implement data transmission on the UL and SL on the unlicensed frequency band to improve resource utilization is one of the problems that need to be solved urgently.

Contents of the invention

Embodiments of the present application provide a data transmission method and a related device, which can improve resource utilization.

In the first aspect, the embodiment of the present application provides a data transmission method, the method includes: the terminal device detects that the first resource and the second resource overlap in the time domain, the first resource is the resource occupied by the first link, The first link is used to carry the first data, the second resource is the resource occupied by the second link, the second link is used to carry the second data, and the first resource is located in an unlicensed frequency band; when the first link When the listen-before-talk LBT interception succeeds, the terminal device sends the first data on the first link.

It can be seen that this method makes the terminal device overlap the resources occupied by the first link and the resources occupied by the second link, and when the resources occupied by the first link are located in the unlicensed frequency band, according to the LBT interception result of the first link, Judging whether to send the first data or the second data can avoid judging whether to send the first data or the second data according to the priority of the first data and the second data, resulting in waste of resources caused by neither the first data nor the second data being sent , which can improve resource utilization.

In an optional implementation manner, when the listen-before-talk LBT interception of the first link succeeds, the terminal device sends the first data on the first link, including: when the listen-before-talk of the first link When the LBT interception is successful and the priority of the first data is higher than the priority of the second data, the terminal device sends the first data on the first link.

It can be seen that the terminal device determines whether to send the first data or the second data according to the LBT interception result on the first link and the priority of the first data and the second data, not only based on the first data and the second data The priority of the first data or the second data is judged to be sent, thereby helping to avoid waste of resources caused by neither the first data nor the second data being sent.

In another optional implementation manner, when the first resource is located on an unlicensed frequency band, the second resource is located on a licensed frequency band, and the LBT interception of the first link succeeds, the terminal device sends first data.

Optionally, when the first resource is located on an unlicensed frequency band, the second resource is located on a licensed frequency band, the LBT interception of the first link is successful, and the priority of the first data is higher than that of the second data, the terminal A device sends first data on a first link.

It can be seen that when the first resource and the second resource overlap in the time domain, and the first resource is located on the unlicensed frequency band, the second resource may be located on the licensed frequency band.

In another optional implementation manner, when the first resource is located on an unlicensed frequency band, the second resource is located on a licensed frequency band, and the LBT interception of the first link fails, the terminal device sends a second data.

It can be seen that when the first resource is located in the unlicensed frequency band and the second resource is located in the licensed frequency band, if the LBT interception of the first link is successful, the terminal device will send the first data on the first link; if the first link If the LBT interception of the link fails, the second data is sent on the second link. That is to say, at this time, whether the terminal device determines to send the first data or the second data according to the LBT interception result of the first link can prevent the terminal device from determining whether to send the first data or the second data according to the priorities of the first data and the second data. For the second data, resource waste caused by neither the first data nor the second data being sent.

In yet another optional implementation manner, when the first resource is located on an unlicensed frequency band, the second resource is located on a licensed frequency band, and the priority of the first data is lower than the priority of the second data, the terminal device in the second link Send the second data on the road.

It can be seen that when the first resource is located in the unlicensed frequency band and the second resource is located in the licensed frequency band, the terminal device does not consider the priority of the first data as long as the priority of the first data is lower than the priority of the second data. As a result of the LBT interception, it is directly determined to send the second data with a high priority, which can ensure that the high-priority data carried on the licensed frequency band is sent.

In yet another optional implementation manner, when the first resource is located on an unlicensed frequency band and the second resource is located on a licensed frequency band, the LBT interception of the first link succeeds, and the priority of the first data is lower than that of the second data When the priority is , the terminal device sends the second data on the second link.

It can be seen that when the first resource is located on the unlicensed frequency band and the second resource is located on the licensed frequency band, even if the LBT interception of the first link is successful, the priority of the first data is lower than that of the second data, so the terminal device Second data is sent on the second link.

In yet another optional implementation manner, the first resource is located on an unlicensed frequency band, and the second resource is located on an unlicensed frequency band. When the listen-before-talk LBT interception of the first link succeeds, the terminal device Sending the first data on the road includes: when the LBT interception of the first link succeeds and the LBT interception of the second link fails, the terminal device sends the first data on the first link.

That is to say, when both the first resource and the second resource are located in the unlicensed frequency band, the terminal device sends data corresponding to the link on the link where the LBT interception succeeds.

In yet another optional implementation manner, the first resource is located in an unlicensed frequency band, and the second resource is located in an unlicensed frequency band. When the listen-before-talk LBT interception of the first link is successful, and the priority of the first data is high When the priority of the second data is given, the terminal device sends the first data on the first link, including: when the LBT interception of the first link is successful, the LBT interception of the second link is successful, and When the priority of the first data is higher than the priority of the second data, the terminal device sends the first data on the first link.

It can be seen that when both the first resource and the second resource are located in the unlicensed frequency band, and the LBT interception of the first link and the second link succeeds, the terminal device sends the first data with high priority.

In an optional implementation manner, the first link is an uplink UL, and the second link is a sidelink SL; or, the first link is a sidelink SL, and the second link is an uplink road ul. It can be seen that one of the first link and the second link is a UL link, and the other is an SL link.

In another optional implementation manner, both the first link and the second link are UL, or both the first link and the second link are SL.

In the second aspect, the embodiment of the present application provides a data transmission device, the data transmission device includes:

a processing unit, configured to detect that the first resource and the second resource overlap in the time domain; the first resource is a resource occupied by a first link, the first link is used to carry first data, and the The second resource is a resource occupied by a second link, the second link is used to carry second data, and the first resource is located on an unlicensed frequency band;

The processing unit is further configured to send the first data on the first link when the listen-before-talk LBT interception of the first link succeeds.

In addition, in this aspect, for other optional implementation manners of the data transmission device, reference may be made to the relevant content of the above-mentioned first aspect, which will not be described in detail here.

In a third aspect, an embodiment of the present application provides a terminal device, where the terminal device includes:

memory for storing computer programs;

A processor, calling a computer program, to:

It is detected that the first resource and the second resource overlap in the time domain; the first resource is a resource occupied by the first link, the first link is used to carry the first data, and the second resource is the resource occupied by the first link. Resources occupied by two links, the second link is used to carry the second data, and the first resource is located on an unlicensed frequency band;

When the listen-before-talk LBT interception of the first link is successful, the first data is sent on the first link.

In addition, in this aspect, for other optional implementation manners of the terminal device, reference may be made to the related content of the above-mentioned first aspect, which will not be described in detail here.

In a fourth aspect, an embodiment of the present application provides a chip, the chip is configured to: detect that the first resource and the second resource overlap in the time domain; the first resource is a resource occupied by the first link, so The first link is used to carry the first data, the second resource is a resource occupied by the second link, the second link is used to carry the second data, and the first resource is located on an unlicensed frequency band ; When the listen-before-talk LBT interception of the first link succeeds, sending the first data on the first link.

In addition, in this aspect, for other optional implementation manners of the chip, reference may be made to the relevant content of the above-mentioned first aspect, which will not be described in detail here.

In the fifth aspect, the embodiment of the present application provides a module device, the module device includes a processor and a communication interface, the processor is connected to the communication interface, the communication interface is used to send and receive signals, and the processing The device is used to: detect that the first resource and the second resource overlap in the time domain; the first resource is a resource occupied by the first link, the first link is used to carry the first data, and the second The resource is the resource occupied by the second link, the second link is used to carry the second data, and the first resource is located on the unlicensed frequency band; when the listen before talk LBT of the first link intercepts On success, sending the first data on the first link.

In addition, in this aspect, for other optional implementation manners of the module device, reference may be made to the relevant content of the above-mentioned first aspect, which will not be described in detail here.

In a sixth aspect, an embodiment of the present application provides a computer-readable storage medium for storing computer software instructions used by the above-mentioned terminal, which includes a program for executing the method described in any one of the above-mentioned first aspects.

Description of drawings

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

FIG. 2 is a flow diagram of a data transmission method provided in an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a data transmission device provided in an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a terminal device provided in an embodiment of the present application.

detailed description

The embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

The communication system involved in the embodiment of the present application is shown in Figure 1. The communication system may include but is not limited to one network device and two terminal devices. However, the actual application may include more than one network device and more than two terminal devices. The communication system shown in FIG. 1 is described by taking a network device 101, a terminal device 1021, and a terminal device 1022 as an example. The network device 101 can provide network services to the terminal device 1021 and the terminal device 1022. Between the terminal device 1021 and the terminal device 1022 Communication is possible.

The terminal equipment in the embodiment of the present application may also be referred to as a terminal, and may refer to various forms of user equipment (user equipment, UE), access terminal, user unit, user station, mobile station, mobile station (mobile station, MS ), remote station, remote terminal, mobile device, user terminal, wireless communication device, user agent or user device. The terminal device may also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a Functional handheld devices, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in the fifth generation mobile communication (5th generation mobile communication, 5G) network or future evolution of public land mobile communication The terminal devices in the network (public land mobile network, PLMN), etc., are not limited in this embodiment of the present application.

The network equipment in this embodiment of the present application includes a base station and a base station controller of an access network, and may also include terminal equipment.

The base station (base station, BS) in the embodiment of the present application may also be referred to as a base station device, and is a device deployed in a wireless access network (wireless access network, RAN) to provide a wireless communication function. For example, equipment providing base station functions in a second generation mobile communication (2th generation mobile communication, 2G) network includes a base transceiver station (base transceiver station, BTS). A device providing a base station function in a third generation mobile communication (3th generation mobile communication, 3G) network includes a node B (NodeB). Devices providing base station functions in a 4th generation mobile communication (4th generation mobile communication, 4G) network include an evolved Node B (evolved NodeB, eNB). In a wireless local area network (Wireless Local Area Networks, WLAN), the device that provides the base station function is an access point (Access Point, AP). In 5G New Radio (New Radio, NR), the device gNB that provides base station functions, and the node B (ng-eNB) that continues to evolve, in which gNB and terminal equipment use NR technology for communication, and between ng-eNB and the terminal Using evolved universal terrestrial radio access (E-UTRA) technology for communication, both gNB and ng-eNB can be connected to the 5G core network. The base station in the embodiment of the present application also includes devices that provide base station functions in future new communication systems, and the like.

The base station controller in the embodiment of the present application may also be called a base station controller device, which is a device for managing a base station. For example, a base station controller (base station controller, BSC) in a 2G network, a radio network controller (radio network controller, RNC) in a 3G network, and a device for controlling and managing a base station in a new communication system in the future.

This application is applicable to 5G communication systems, 4G communication systems, 3G communication systems, and various new communication systems in the future, such as the sixth generation (6th Generation, 6G) mobile communication, the seventh generation ( 7th Generation, 7G) mobile communications, etc., which are not limited in this embodiment of the present application.

This application is also applicable to different network architectures, including but not limited to relay network architecture, dual-link architecture, vehicle-to-everything (V2X) architecture, device-to-device communication (Device-to- Device, D2D) and other architectures.

As shown in Figure 1 above, in cellular network communication, terminal device 1021 can send uplink data to network device 101 on the uplink (uplink, UL), and send uplink data to another terminal on the sidelink (sidelink, SL). Device 1022 transmits sidelink data.

Usually, due to the capability limitation of the terminal device, the terminal device can only send data on one link at a time. For example, when a terminal device needs to send UL data and SL data at the same time, the terminal device can only send data on one of the links. Currently, when the resources occupied by the UL and the resources occupied by the SL are located in the licensed frequency band, and the data on the UL and the data on the SL need to be sent at the same time, the terminal device sends the data on one of the links according to the priority rules of the data. Data, that is, the data with higher priority among the data on the UL and the data on the SL sent by the terminal device.

It should be noted that, among the data on the UL and the data on the SL mentioned in the present invention, the data with higher priority can be determined in the following manner:

1. The priority value of the data on the UL is directly compared with the priority value of the data on the SL, and the data with a larger or smaller value is the data with a higher priority;

2. When the first threshold is configured and the priority value of the data on SL is less than the first threshold, the data on SL is data with higher priority; otherwise, the data on UL is data with higher priority;

3. When the first threshold and the second threshold are configured, the priority value of the data on the SL is less than the first threshold, and the priority of the data on the UL is greater than the second threshold, and the data on the SL is data with a higher priority , otherwise, the data on UL is data with higher priority;

4. For the first message and the third message in the random access, and the emergency message, the data on the UL has a higher priority.

The above manner of determining which one has higher priority, UL data or SL data, is only an example of the present invention, and the present invention does not limit other manners of determining higher priority data.

However, when one of the resources occupied by the UL and the resources occupied by the SL is located in the unlicensed frequency band, and the data on the UL and the data on the SL need to be sent at the same time, the terminal device needs to check the links located in the unlicensed frequency band. The channel performs a listen before talk (LBT) operation, that is, judges whether the channel is idle based on the LBT interception result, and the terminal device can only transmit data on the link where the channel is idle. Then, it may happen that the high-priority data cannot be transmitted, and the LBT detection result of the link corresponding to the low-priority data is that the channel is idle, and the low-priority data can be transmitted. If the transmitted data is still determined according to the priority, then May lead to waste of resources. In addition, if the LBT detection result of the link corresponding to the high-priority data is that the channel is busy, the high-priority data cannot be sent, resulting in low communication efficiency.

An embodiment of the present application provides a data transmission method 100 . In this method, the terminal device detects that the first resource and the second resource overlap in the time domain, the first resource is the resource occupied by the first link, the first link is used to carry the first data, and the second resource is the resource occupied by the first link. The resources occupied by the two links, the second link is used to carry the second data, and the first resource is located in the unlicensed frequency band; when the listen-before-talk LBT interception of the first link succeeds, the terminal Send the first data on the road.

This method enables the terminal device to judge the transmission according to the LBT interception result of the first link when the resources occupied by the first link overlap with the resources occupied by the second link, and the resources occupied by the first link are located in the unlicensed frequency band. Whether the first data or the second data can avoid resource waste caused by neither the first data nor the second data being sent when determining whether to send the first data or the second data according to the priorities of the first data and the second data, Thus, resource utilization can be improved.

Based on the above description, the embodiment of the present application proposes a data transmission method 100 as shown in FIG. 2, which may include S201-S202:

S201: The terminal device detects that the first resource and the second resource overlap in the time domain; the first resource is the resource occupied by the first link, the first link is used to carry the first data, and the second resource is the resource occupied by the second link resources occupied by the link, the second link is used to carry the second data, and the first resource is located on an unlicensed frequency band.

It can be understood that the overlap between the first resource and the second resource in the time domain means that the resource for transmitting the first data by the terminal device and the resource for transmitting the second data by the transmission source overlap in the time domain. For example, the terminal device needs to transmit the first data on the 0th slot (slot) to the 6th slot of the time domain resource, and also needs to transmit the second data on the 4th slot to the 9th slot of the time domain resource, then The transmission resources of the first data and the second data on the 4th slot to the 6th slot overlap, that is, the first resource and the second resource overlap in the time domain.

It can be seen that after determining the first data to be sent on the first link and the second data to be sent on the second link, the terminal device detects the first resource for transmitting the first data and the resource for transmitting the second The second resource of data overlaps in the time domain. At this time, due to the limited capability of the terminal device, the terminal device can only send one of the first data and the second data.

S202: When the listen-before-talk LBT interception of the first link succeeds, the terminal device sends the first data on the first link.

Wherein, the successful LBT interception of the first link means that the terminal device performs LBT interception on the first link, and detects that the channel on the first link is idle. When the terminal device detects that the channel on the first link is idle, it indicates that data can be transmitted on the first link. Send the first data on the road.

In addition, when the listen-before-talk LBT interception of the first link is successful, the terminal device sends the first data on the first link, which can be understood as: the terminal device determines the first data to be sent on the first link After the first data and the second data to be sent on the second link, the first data and the second data are respectively packaged to generate the first data packet and the second data packet, and then LBT detection is performed on the first link Listening, when the LBT interception of the first link succeeds, the first data packet is sent.

In an optional implementation manner, when the first resource overlaps with the second resource in the time domain, and the first resource is located in an unlicensed frequency band, when the listen-before-talk LBT interception of the first link succeeds, the terminal The device sends the first data on the first link, including: when the listen-before-talk LBT interception of the first link succeeds, and the priority of the first data is higher than the priority of the second data, the terminal device Send the first data on a link.

It can be seen that the terminal device sends the first data on the first link only when the listen-before-talk LBT interception of the first link succeeds and the priority of the first data is higher than the priority of the second data. That is, the terminal device determines whether to send the first data or the second data based on the LBT interception result of the first link and the priority of the first data and the second data, not only according to the priority of the first data and the second data Whether to send the first data or the second data is determined, thereby avoiding resource waste caused by the terminal device determining that neither the first data nor the second data is sent.

Optionally, when the first resource is located on the unlicensed frequency band, the second resource is located on the authorized frequency band, the LBT interception of the first link is successful, and the priority of the first data is higher than that of the second data, the terminal device First data is sent on the first link.

In another optional implementation manner, when the first resource is located on an unlicensed frequency band and the second resource is located on an unlicensed frequency band, when the listen-before-talk LBT interception of the first link succeeds, the terminal device at the Sending the first data on a link includes: when the LBT interception of the first link succeeds and the LBT interception of the second link fails, the terminal device sends the first data on the first link .

That is to say, when both the first resource and the second resource are located in the unlicensed frequency band, the terminal device sends the data on the link whose LBT interception is successful, so as to ensure that the data on the link with an idle channel is sent.

In yet another optional implementation manner, when the first resource is located on an unlicensed frequency band and the second resource is located on an unlicensed frequency band, when the listen-before-talk LBT interception of the first link succeeds, and the priority of the first data When the priority is higher than the priority of the second data, the terminal device sends the first data on the first link, including: when the LBT interception of the first link is successful, the LBT interception of the second link is successful , and when the priority of the first data is higher than the priority of the second data, the terminal device sends the first data on the first link.

That is to say, when the first resource and the second resource are located in the unlicensed frequency band, and the LBT interception of the first link and the second link is successful, according to the principle of priority, the terminal device sends the first resource with higher priority. data.

It can be seen that in the embodiment of the present application, when the first resource and the second resource overlap in the time domain, and the first resource is located in the unlicensed frequency band, as long as the LBT interception of the first link is successful, the terminal device in the first link Send the first data on the road. That is to say, when the resources occupied by the first link and the resources occupied by the second link overlap, and the resources occupied by the first link are located in the unlicensed frequency band, the terminal device does not consider the priority of the first data and the second data , as long as the LBT interception of the first link is successful, the first data is sent, which can avoid the first data and the second data caused by determining whether to send the first data or the second data according to the priority The waste of resources caused by none of the data being sent can improve resource utilization.

In addition, in an optional implementation manner, when the first resource is located on an unlicensed frequency band, the second resource is located on a licensed frequency band, and the LBT listening of the first link fails, the terminal device sends the second link on the second link. Second data.

In yet another optional implementation manner, when the first resource is located on an unlicensed frequency band, the second resource is located on a licensed frequency band, and the priority of the first data is lower than the priority of the second data, the terminal device in the second link Send the second data on the road. It can be seen that when the first resource is located in the unlicensed frequency band and the second resource is located in the licensed frequency band, the terminal device does not consider the priority of the first data as long as the priority of the first data is lower than the priority of the second data. As a result of the LBT interception, it is directly determined to send the second data with a high priority, which can ensure that the high-priority data carried on the licensed frequency band is sent.

In yet another optional implementation manner, when the first resource is located on an unlicensed frequency band and the second resource is located on a licensed frequency band, and when the LBT interception of the first link succeeds, and the priority of the first data is lower than that of the first data When the priority of the second data, the terminal device sends the second data on the second link.

In the embodiment of the present application, the above-mentioned first link is an uplink UL, and the second link is a side link SL. Alternatively, the above-mentioned first link is a side link SL, and the second link is an uplink UL. Alternatively, both the above-mentioned first link and the second link are uplinks UL. Alternatively, both the above-mentioned first link and the second link are side links SL. The embodiment of the present application does not limit the specific implementation manners of the first link and the second link.

Taking the first link as UL and the second link as SL as an example, and considering that the resources occupied by UL are located on the unlicensed frequency band, and the resources occupied by SL are located on the licensed frequency band or on the unlicensed frequency band, the above-mentioned implementation is described:

1. The resources occupied by UL are located in the unlicensed frequency band, and the resources occupied by SL are located in the licensed frequency band.

In an optional implementation manner, when the LBT interception on the UL succeeds, the terminal device sends the first data on the UL.

Since the resources occupied by the UL are located in the unlicensed frequency band, the terminal device needs to perform LBT interception on the UL. Then, only when the channel on the UL is detected to be idle, the terminal device can send the first data on the UL, that is, the terminal device is on the UL. The probability of transmitting data on the UL is small, so as long as the terminal device detects that the UL is idle, that is, when the LBT on the UL intercepts successfully, the terminal device will send the first data on the UL to ensure that the UL idle channel is fully utilized , can improve resource utilization.

In another optional implementation manner, when the LBT interception on the UL succeeds and the priority of the first data is higher than that of the second data, the terminal device sends the first data on the UL.

That is to say, when the UL resource is located in the unlicensed frequency band, the terminal device will only send the first data on the UL when it detects that the channel on the UL is idle and the priority of the first data is higher than that of the second data. Otherwise, send the second data on the SL to ensure that the data on the SL is sent first.

In yet another optional implementation manner, when the UL LBT interception succeeds and the priority of the first data is lower than the priority of the second data, the terminal device sends the first data on the UL. It can be seen that even if the priority of the first data is low, as long as the LBT interception on the UL is successful, the terminal device will send the first data to ensure that the data on the link corresponding to the idle channel is sent, which can improve resource utilization.

In yet another optional implementation manner, when the UL LBT interception fails, the terminal device sends the second data on the SL. That is, when the UL LBT interception succeeds, the terminal device sends the first data on the UL; when the UL LBT interception fails, it sends the second data on the SL.

In yet another optional implementation manner, when the UL LBT interception fails and the priority of the first data is lower than the priority of the second data, the terminal device sends the second data on the SL. It can be seen that when the priority of the first data is lower than that of the second data and the UL LBT interception fails, the terminal device sends the second data to ensure that one of the first data and the second data is sent Therefore, resource waste caused by neither the first data nor the second data being sent is avoided.

In yet another optional implementation manner, when the UL LBT interception succeeds and the priority of the first data is lower than the priority of the second data, the terminal device sends the second data on the SL. It can be seen that even though the UL LBT interception is successful, the terminal device still sends the second data on the SL because the priority of the first data is lower than that of the second data.

2. The resources occupied by UL are located in the unlicensed frequency band, and the resources occupied by SL are located in the unlicensed frequency band.

In an optional implementation manner, when the UL LBT interception succeeds, the SL LBT interception succeeds, and the priority of the first data is higher than that of the second data, the terminal device sends the first data on the UL.

In another optional implementation manner, when the UL LBT interception is successful, the SL LBT interception is successful, and the priority of the first data is lower than the priority of the second data, the terminal device sends the second data on the SL .

That is to say, when the resources occupied by the UL and the resources occupied by the SL of the terminal device are located in the unlicensed frequency band, and the LBT interception of both UL and SL is successful, the terminal device sends the first data and the second data with higher priority. data to ensure that the data with higher priority among the first data and the second data is sent, that is, one of the first data and the second data is sent, which is beneficial to improve communication efficiency and resource utilization.

In yet another optional implementation manner, the LBT interception of the UL succeeds, but the LBT interception of the SL fails, and the terminal device sends the first data on the UL.

In yet another optional implementation manner, the LBT interception of the UL fails, the LBT interception of the SL succeeds, and the terminal device sends the first data on the SL.

It can be seen that when the resources occupied by UL and the resources occupied by SL are located in the unlicensed frequency band, if the LBT interception of one of the links is successful, then the terminal device will send the corresponding data on the link where the LBT interception is successful, so as to Ensure that links with idle channels are fully utilized to improve resource utilization.

In the embodiment of this application, when the above-mentioned first link is SL, the second link is UL, and the resources occupied by SL are located in the unlicensed frequency band, the implementation method for the terminal device to determine whether to send the first data or the second data can be found in The implementation manner when the above-mentioned first link is UL, the second link is SL, and the resource occupied by UL is located in an unlicensed frequency band will not be repeated here.

Referring to FIG. 3 , FIG. 3 is a schematic structural diagram of a data transmission device provided by an embodiment of the present invention, and the data transmission device is used in a terminal device. The data transmission device 300 may include:

The processing unit 301 is configured to detect that the first resource and the second resource overlap in the time domain; the first resource is a resource occupied by a first link, and the first link is used to carry first data, so The second resource is a resource occupied by a second link, the second link is used to carry second data, and the first resource is located on an unlicensed frequency band;

The processing unit 301 is further configured to send the first data on the first link when the listen-before-talk LBT interception of the first link succeeds.

In an optional implementation manner, when the listen-before-talk LBT interception of the first link succeeds, the processing unit 301 sends the first data on the first link, specifically Used for: when the listen-before-talk LBT interception of the first link is successful, and the priority of the first data is higher than the priority of the second data, sending on the first link the first data.

In another optional implementation manner, the second resource is located on a licensed frequency band.

In yet another optional implementation manner, when the LBT interception of the first link fails, the processing unit 301 may further send the second data on the second link.

In yet another optional implementation manner, the second resource is located on a licensed frequency band, and when the priority of the first data is lower than the priority of the second data, the processing unit 301 may further sending the second data on the second link.

In another optional implementation manner, the second resource is located on the authorized frequency band, when the LBT interception of the first link is successful, and the priority of the first data is lower than that of the second data priority, the processing unit 301 sends the second data on the second link.

In yet another optional implementation manner, the second resource is located on an unlicensed frequency band, and when the listen-before-talk LBT interception of the first link succeeds, the processing unit 301 Sending the first data on a link is specifically used for: when the listen-before-talk LBT interception of the first link succeeds and the LBT interception of the second link fails, on the second link Send the first data over a link.

In yet another optional implementation manner, the second resource is located on an unlicensed frequency band, and when the listen-before-talk LBT interception of the first link succeeds, and the priority of the first data is high In accordance with the priority of the second data, the processing unit 301 sends the first data on the first link, specifically for: when the listen-before-talk LBT of the first link listens If successful, the LBT interception of the second link is successful, and the priority of the first data is higher than the priority of the second data, sending the first data on the first link.

In yet another optional implementation manner, the first link is an uplink UL, and the second link is a side link SL; or, the first link is a side link SL, The second link is an uplink UL.

Optionally, the data transmission device 300 further includes a communication unit 302, which can be used to send the first data or the second data, and the communication unit 302 can also be used to communicate with other communication devices.

The embodiment of the present application and the above-mentioned method embodiment are based on the same idea, and the technical effects brought about by them are also the same. For specific principles, please refer to the description of the above-mentioned method embodiment, and details are not repeated here.

Please refer to FIG. 4 , which is a schematic structural diagram of a terminal device 400 provided in an embodiment of the present application. The terminal device 400 described in the embodiment of the present application includes: a processor 401 and a memory 402, and the processor 401 and the memory 402 are connected through one or more communication buses.

The above-mentioned processor 401 may be a central processing unit (Central Processing Unit, CPU), and the processor may also be other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC) ), off-the-shelf programmable gate array (Field-Programmable Gate Array, FPGA) 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. The processor 401 is configured to support the terminal device to execute corresponding functions of the terminal device in the method described in FIG. 2 .

The above-mentioned memory 402 may include a read-only memory and a random-access memory, and provides computer programs and data to the processor 401 . A portion of memory 402 may also include non-volatile random access memory. In an optional implementation manner, when the processor 401 invokes the computer program, it is used to execute:

In another optional implementation manner, when the processor 401 calls the computer program, it is used to execute:

When the listen-before-talk LBT interception of the first link succeeds, sending the first data on the first link.

The embodiment of the present application also provides a chip, the chip is configured to detect that the first resource and the second resource overlap in the time domain; the first resource is a resource occupied by the first link, and the first The link is used to carry the first data, the second resource is a resource occupied by the second link, the second link is used to carry the second data, and the first resource is located on an unlicensed frequency band; when the When the listen-before-talk LBT interception of the first link succeeds, the first data is sent on the first link.

For other implementation manners of the chip, reference may be made to relevant content in the foregoing method embodiments. No more details here.

An embodiment of the present application provides a module device, the module device includes a processor and a communication interface, the processor is connected to the communication interface, the communication interface is used for sending and receiving signals, and the processor is used for:

For other implementation manners of the module device, reference may be made to relevant content in the foregoing method embodiments. No more details here.

The embodiment of the present application also provides a computer-readable storage medium. The readable storage medium stores a computer program. When the computer program is executed by a processor, it can be used to implement the embodiment corresponding to FIG. 2 of the embodiment of the present application. The wireless network search method described above will not be repeated here.

The computer-readable storage medium may be an internal storage unit of the terminal described in any of the foregoing embodiments, such as a hard disk or memory of the device. The computer-readable storage medium can also be an external storage device of the terminal device, such as a plug-in hard disk equipped on the device, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, flash card (Flash Card), etc. Further, the computer-readable storage medium may also include both an internal storage unit of the terminal device and an external storage device. The computer-readable storage medium is used to store the computer program and other programs and data required by the terminal device. The computer-readable storage medium can also be used to temporarily store data that has been output or will be output.

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be implemented through computer programs to instruct related hardware, and the programs can be stored in readable storage media. During execution, it may include the processes of the embodiments of the above-mentioned methods. Wherein, the storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM) or a random access memory (Random Access Memory, RAM), etc.

The above disclosures are only preferred embodiments of the present application, which certainly cannot limit the scope of the present application. Therefore, equivalent changes made according to the claims of the present application still fall within the scope of the present application.

Claims

A data transmission method, characterized in that the method comprises:

The terminal device detects that the first resource and the second resource overlap in the time domain; the first resource is a resource occupied by a first link, the first link is used to carry the first data, and the second resource is a resource occupied by a second link, the second link is used to carry second data, and the first resource is located on an unlicensed frequency band;

When the listen-before-talk LBT interception of the first link succeeds, the terminal device sends the first data on the first link.
The method according to claim 1, wherein when the listen-before-talk LBT interception of the first link succeeds, the terminal device sends the first data, including:

When the listen-before-talk LBT interception of the first link is successful, and the priority of the first data is higher than the priority of the second data, the terminal device is on the first link Send the first data.
The method according to claim 1 or 2, wherein the second resource is located on a licensed frequency band.
The method according to claim 3, further comprising:

When the LBT interception of the first link fails, the terminal device sends the second data on the second link.
The method according to claim 1, wherein the second resource is located on an authorized frequency band, and the method further comprises:

When the priority of the first data is lower than the priority of the second data, the terminal device sends the second data on the second link.
The method according to claim 1 or 2, wherein the second resource is located on an authorized frequency band, and the method further comprises:

When the LBT interception of the first link succeeds and the priority of the first data is lower than the priority of the second data, the terminal device sends the first data on the second link Second data.
The method according to claim 1, wherein the second resource is located on an unlicensed frequency band, and when the listen-before-talk LBT interception of the first link succeeds, the terminal device sending the first data on the first link, including:

When the LBT interception of the first link succeeds and the LBT interception of the second link fails, the terminal device sends the first data on the first link.
The method according to claim 2, wherein the second resource is located on an unlicensed frequency band, and when the listen-before-talk LBT interception of the first link succeeds, and the first data When the priority is higher than the priority of the second data, the terminal device sends the first data on the first link, including:

When the LBT interception of the first link is successful, the LBT interception of the second link is successful, and the priority of the first data is higher than the priority of the second data, The terminal device sends the first data on the first link.
The method according to claim 1, wherein the first link is an uplink UL, and the second link is a side link SL; or,

The first link is a side link SL, and the second link is an uplink UL.
A data transmission device, characterized in that the data transmission device comprises:

a processing unit, configured to detect that the first resource and the second resource overlap in the time domain; the first resource is a resource occupied by a first link, the first link is used to carry first data, and the The second resource is a resource occupied by a second link, the second link is used to carry second data, and the first resource is located on an unlicensed frequency band;

The processing unit is further configured to send the first data on the first link when the listen-before-talk LBT interception of the first link succeeds.
The device according to claim 10, wherein when the listen-before-talk LBT interception of the first link succeeds, the processing unit sends the first Data, specifically for:

When the listen-before-talk LBT interception of the first link succeeds, and the priority of the first data is higher than the priority of the second data, sending the first data on the first link a data.
The device according to claim 10 or 11, wherein the second resource is located on a licensed frequency band.
The device according to claim 12, wherein the processing unit is further configured to:

When the LBT interception of the first link fails, the second data is sent on the second link.
The device according to claim 10, wherein the second resource is located on an authorized frequency band, and the processing unit is further configured to:

When the priority of the first data is lower than the priority of the second data, sending the second data on the second link.
The device according to claim 10 or 11, wherein the second resource is located on a licensed frequency band, and the processing unit is further configured to:

When the LBT interception of the first link is successful and the priority of the first data is lower than the priority of the second data, the second data is sent on the second link.
The device according to claim 10, wherein the second resource is located on an unlicensed frequency band, and when the listen-before-talk LBT interception of the first link succeeds, the processing unit sending the first data on the first link, specifically for:

When the LBT interception of the first link succeeds and the LBT interception of the second link fails, the first data is sent on the first link.
A terminal device, characterized in that the terminal device includes a processor and a memory, the processor and the memory are connected to each other, wherein the memory is used to store a computer program, the computer program includes program instructions, and the The processor is configured to call the program instructions to execute the method according to any one of claims 1 to 9.
A chip, characterized in that,

The chip is configured to detect that there is an overlap between the first resource and the second resource in the time domain; the first resource is a resource occupied by a first link, and the first link is used to carry first data, so The second resource is a resource occupied by a second link, the second link is used to carry second data, and the first resource is located on an unlicensed frequency band;

The chip is further configured to send the first data on the first link when the listen-before-talk LBT interception of the first link succeeds.
A module device, characterized in that the module device includes a processor and a communication interface, the processor is connected to the communication interface, the communication interface is used for sending and receiving signals, and the processor is used for:

It is detected that the first resource and the second resource overlap in the time domain; the first resource is a resource occupied by the first link, the first link is used to carry the first data, and the second resource is the resource occupied by the first link. Resources occupied by two links, the second link is used to carry the second data, and the first resource is located on an unlicensed frequency band;

When the listen-before-talk LBT interception of the first link is successful, the first data is sent on the first link.
A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program, the computer program includes program instructions, and when executed by a processor, the program instructions cause the processor to execute The method described in any one of 1 to 9 is required.