CN-115553025-B - Data transmission method and device

CN115553025BCN 115553025 BCN115553025 BCN 115553025BCN-115553025-B

Abstract

The embodiment of the disclosure discloses a data transmission method and a data transmission device, which can be applied to the technical field of communication, wherein the method executed by a first terminal device comprises the steps of receiving Downlink Control Information (DCI) sent by network side equipment, wherein the DCI is used for indicating side link permission resources, determining a first sidelink wave beam used by the side link permission resources according to the DCI, and using the first sidelink wave beam to send the sidelink on the side link permission resources. Therefore, the first terminal equipment determines the first sidelink wave beam used by the sidelink allowed resource, and transmits data to the second terminal equipment by using the first sidelink wave beam on the sidelink allowed resource, so that the loss or failure of data transmission can be avoided.

Inventors

YANG XING

Assignees

北京小米移动软件有限公司

Dates

Publication Date: 20260508
Application Date: 20220804

Claims (17)

1.A data transmission method, the method being performed by a first terminal device, comprising: Receiving Downlink Control Information (DCI) sent by network side equipment, wherein the DCI is used for indicating side link permission resources; determining a first sidelink beam used by the side link licensed resource according to the DCI; Determining a target second terminal device corresponding to the side link grant resource according to the first sidelink beam so as to send data of the target second terminal device by using the side link grant resource, wherein the target second terminal device is determined by the first terminal device from a plurality of second terminal devices which establish sidelink connection with the first terminal device; And determining a target second terminal device corresponding to the side link grant resource according to the first sidelink beam, so as to send data of the target second terminal device by using the side link grant resource, wherein the method comprises the following steps: Determining a target second sidelink wave beam matched with the first sidelink wave beam in second sidelink wave beams used by the sidelink logic channel with the data to be sent in the target sidelink logic channel; and determining a target sidelink logical channel corresponding to the target second sidelink wave beam as an appointed sidelink logical channel, and determining a second terminal device corresponding to the appointed siedlink logical channel as the target second terminal device so as to use the side link permission resource to send data of the target second terminal device corresponding to the appointed sidelink logical channel.
2. The method of claim 1, wherein the DCI includes a sidelink beam identification, wherein the determining the first sidelink beam for side link grant resource usage based on the DCI includes: And determining the first sidelink beam used by the side link licensed resource according to the sidelink beam identification.
3. The method of claim 1, wherein the method further comprises: And determining the sending configuration of the target sidelink logical channel, wherein the sending configuration of the target sidelink logical channel is used for indicating a second sidelink beam used by the target sidelink logical channel.
4. The method of claim 3, wherein the determining the transmit configuration of the target sidelink logical channel comprises: receiving first indication information sent by the network side equipment or the opposite terminal equipment, wherein the first indication information is used for indicating the sending configuration of the target sidelink logic channel; And determining the sending configuration of the target sidelink logic channel according to the indication information.
5. The method of claim 4, wherein in the case of receiving the first indication information sent by the network side device, the method further comprises: Receiving second indication information sent by the network side equipment, wherein the second indication information comprises a terminal equipment identifier bound with a sending configuration of the target sidelink logic channel, and the sending configuration is used for indicating a second sidelink beam used by the target sidelink logic channel corresponding to a second terminal equipment identified by the terminal equipment identifier; and determining a second terminal device corresponding to the target sidelink logical channel according to the second indication information.
6. The method of any one of claims 1 to 5, wherein the sending, using the side-link grant resource, data of the target second terminal device corresponding to the specified sidelink logical channel includes: And determining the priority order of the designated sidelink logical channel, and sending the data of the target second terminal equipment corresponding to the designated sidelink logical channel by using the permission resource according to the priority order.
7. A data transmission method, wherein the method is performed by a network side device, and comprises: The method comprises the steps of sending DCI to a first terminal device, wherein the DCI is used for indicating side link permission resources, the DCI is used for determining a first sidelink wave beam used by the side link permission resources according to the DCI by the first terminal device, so that the first terminal device determines a target second sidelink wave beam matched with the first sidelink wave beam in a second sidelink wave beam used by a sidelink logic channel with data to be sent in a target sidelink logic channel, determining that the target sidelink logic channel corresponding to the target second sidelink wave beam is a designated sidelink logic channel, and determining that the second terminal device corresponding to the designated siedlink logic channel is a target second terminal device, so that the data of the target second terminal device corresponding to the designated sidelink logic channel can be sent by using the side link permission resources.
8. The method of claim 7, wherein a sidelink beam identification for the first terminal device to determine the first sidelink beam is included in the DCI.
9. The method of claim 7, wherein the method further comprises: And sending first indication information to the first terminal equipment, wherein the first indication information is used for indicating the sending configuration of the target sidelink logic channel, and the sending configuration of the target sidelink logic channel is used for indicating a second sidelink beam used by the target sidelink logic channel.
10. The method of claim 9, wherein the method further comprises: and sending second indication information to the first terminal equipment, wherein the second indication information comprises a terminal equipment identifier bound with a sending configuration of the target sidelink logical channel, and the sending configuration is used for indicating a second sidelink beam used by the target sidelink logical channel corresponding to the second terminal equipment identified by the terminal equipment identifier.
11. A first terminal device, characterized in that the first terminal device comprises: The receiving and transmitting module is configured to receive Downlink Control Information (DCI) sent by network side equipment, wherein the DCI is used for indicating side link permission resources; a processing module configured to determine a first sidelink beam used by the sidelink licensed resource according to the DCI; The processing module is further configured to determine a target second terminal device corresponding to the side link grant resource according to the first sidelink beam, so as to send data of the target second terminal device by using the side link grant resource, wherein the target second terminal device is determined by the first terminal device from a plurality of second terminal devices establishing sidelink connection with the first terminal device; The processing module is further configured to determine a target second sidelink beam matched with the first sidelink beam in a second sidelink beam used by the sidelink logical channel with data to be sent in the target sidelink logical channel, determine that the target sidelink logical channel corresponding to the target second sidelink beam is a designated sidelink logical channel, and determine that a second terminal device corresponding to the designated siedlink logical channel is the target second terminal device, so that the data of the target second terminal device corresponding to the designated sidelink logical channel is sent by using the side link grant resource.
12. A network side device, characterized in that the network side device comprises: And the receiving and transmitting module is configured to send DCI to the first terminal equipment, wherein the DCI is used for indicating side link permission resources, the DCI is used for determining a first sidelink wave beam used by the side link permission resources according to the DCI by the first terminal equipment, so that the first terminal equipment determines a target second sidelink wave beam matched with the first sidelink wave beam in a second sidelink wave beam used by the sidelink logic channel with data to be sent in a target sidelink logic channel, and determines that the target sidelink logic channel corresponding to the target second sidelink wave beam is a designated sidelink logic channel, determines that the second terminal equipment corresponding to the designated siedlink logic channel is a target second terminal equipment, and sends the data of the target second terminal equipment corresponding to the designated sidelink logic channel by using the side link permission resources.
13. A communication system comprising a first terminal device configured to implement the method of any one of claims 1 to 6 and a network-side device configured to implement the method of any one of claims 7 to 10.
14. A communication device, characterized in that the device comprises a processor and a memory, the memory having stored therein a computer program, the processor executing the computer program stored in the memory to cause the device to perform the method according to any one of claims 1 to 6, or the processor executing the computer program stored in the memory to cause the device to perform the method according to any one of claims 7 to 10.
15. A communication device is characterized by comprising a processor and an interface circuit; The interface circuit is used for receiving code instructions and transmitting the code instructions to the processor; The processor for executing the code instructions to perform the method of any one of claims 1 to 6 or for executing the code instructions to perform the method of any one of claims 7 to 10.
16. A computer readable storage medium storing instructions which, when executed, cause the method of any one of claims 1 to 6 to be implemented or which, when executed, cause the method of any one of claims 7 to 10 to be implemented.
17. A computer program product comprising a program which, when executed by a computer, implements the method of any one of claims 1 to 6, 7 to 10.

Description

Data transmission method and device Technical Field The disclosure relates to the field of communication technologies, and in particular, to a data transmission method and device. Background In the related art, a plurality of logical channels may be established between terminal devices performing Sidelink communications for data transmission. After the first terminal device receives one Sidelink of the transmission permission resources (SIDELINK GRANT), a logical channel can be selected by a logical channel priority selection method (Logical Channel Prioritization, LCP), and data can be transmitted to the second terminal device corresponding to the selected logical channel. However, since the sidelink data can be accurately transmitted to the second terminal device only when the corresponding beam is used for transmitting on SIDELINK GRANT, and the first terminal device only considers the logic channel priority to determine the second terminal device, the transmission beam used by the first terminal device for transmitting the data to the second terminal device is inconsistent with the beam corresponding to SIDELINK GRANT, which can cause that the second terminal device cannot receive the data transmitted by the first terminal device, which is a problem to be solved. Disclosure of Invention The embodiment of the disclosure provides a data transmission method and device, a first terminal device determines a first sidelink beam used by a sidelink licensed resource, and transmits data to a second terminal device by using the first sidelink beam on the sidelink licensed resource, so that loss or failure of data transmission can be avoided. In a first aspect, an embodiment of the present disclosure provides a data transmission method, which is executed by a first terminal device, where the method includes receiving downlink control information DCI sent by a network side device, where the DCI is used to indicate side link grant resources, and determining, according to the DCI, a first sidelink beam used by the side link grant resources, so as to perform sidelink transmission on the side link grant resources by using the first sidelink beam. In the technical scheme, a first terminal device receives Downlink Control Information (DCI) sent by a network side device, wherein the DCI is used for indicating side link grant resources, and a first sidelink beam used by the side link grant resources is determined according to the DCI so as to use the first sidelink beam to perform sidelink sending on the side link grant resources. Therefore, the first terminal equipment determines the first sidelink wave beam used by the sidelink allowed resource, and transmits data to the second terminal equipment by using the first sidelink wave beam on the sidelink allowed resource, so that the loss or failure of data transmission can be avoided. In a second aspect, an embodiment of the present disclosure provides another data transmission method, which is performed by a network side device, where the method includes sending, to a first terminal device, DCI for determining a first sidelink beam used for side chain grant resources, where the DCI is used to indicate the side chain grant resources. In a third aspect, an embodiment of the present disclosure provides a communication apparatus, where the communication apparatus has a function of implementing part or all of the first terminal device in the method described in the first aspect, for example, a function of the communication apparatus may be provided with a function in part or all of the embodiments of the present disclosure, or may be provided with a function of implementing any one of the embodiments of the present disclosure separately. The functions may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the functions described above. In one implementation, the communication device may include a transceiver module and a processing module in a structure configured to support the communication device to perform the corresponding functions in the method. The transceiver module is used for supporting communication between the communication device and other equipment. The communication device may further comprise a memory module for coupling with the transceiver module and the processing module, which holds the necessary computer programs and data of the communication device. In one implementation, the communication device comprises a transceiver module configured to receive Downlink Control Information (DCI) sent by network side equipment, wherein the DCI is used for indicating side link grant resources, and a processing module configured to determine a first sidelink beam used by the side link grant resources according to the DCI so as to use the first sidelink beam to perform sidelink sending on the side link grant resources. In a fourth aspect, an embodime