EP-4742831-A2 - METHOD FOR TRANSMITTING DATA IN INTERNET OF VEHICLES, AND TERMINAL DEVICE

EP4742831A2EP 4742831 A2EP4742831 A2EP 4742831A2EP-4742831-A2

Abstract

A method for transmitting data in the Internet of Vehicles, and a terminal device, wherein resources used for repeated sidelink transmission may be determined, which is beneficial in improving the reliability of data transmission. The method comprises: a terminal device receiving first control information sent by a network device, the first control information being used to determine resource information used for repeated sidelink transmission; according to the first control information, the terminal device determining resources used for repeated sidelink transmission.

Inventors

LU, QIANXI
LIN, HUEI-MING

Assignees

GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.

Dates

Publication Date: 20260513
Application Date: 20180705

Claims (15)

A method for transmitting data, comprising: receiving (S210), by a terminal device, first control information sent by a network device, wherein the first control information is used to determine resource information used for multiple transmissions of a sidelink; and determining (S220), by the terminal device, a resource used for the multiple transmissions of the sidelink according to the first control information; wherein the resource information used for the multiple transmissions of the sidelink comprises time domain resource information and/or frequency domain resource information used for the multiple transmissions of the sidelink.
The method according to claim 1, wherein the first control information comprises first configuration information, the first configuration information is used to determine a time offset between two adjacent transmissions in the multiple transmissions, and the determining, by the terminal device, the resource used for the multiple transmissions of the sidelink according to the first control information comprises: determining, by the terminal device, a time domain resource used for each of the multiple transmissions according to the time domain resource information of the first transmission in the multiple transmissions, a number of transmissions of the multiple transmissions, and the time offset between two adjacent transmissions.
The method according to claim 2, wherein the time domain resource information of the first transmission is determined according to the first control information, or is pre-configured on the terminal device, or is configured by the network device; and the number of transmissions is determined according to the first control information, or is pre-configured on the terminal device, or is configured by the network device.
The method according to claim 1, wherein the first control information comprises first index information, and the first index information is used to indicate the time domain resource information corresponding to each of the multiple transmissions.
The method according to claim 4, wherein the determining, by the terminal device, the resource used for the multiple transmissions of the sidelink according to the first control information comprises: determining, by the terminal device, a time domain resource used for the multiple transmissions according to the first index information and a first corresponding relationship, wherein the first corresponding relationship is a corresponding relationship between index information and the time domain resource information.
The method according to claim 5, further comprising: determining, by the terminal device, a number of transmissions of the multiple transmissions according to the first index information, and the time domain resource corresponding to the first index information is a time unit used for the multiple transmissions.
The method according to claim 1, wherein the first control information comprises second configuration information, the second configuration information is used to determine time offset information of each of the multiple transmissions with respect to a specific time unit, and the determining, by the terminal device, the resource used for the multiple transmissions of the sidelink according to the first control information comprises: determining, by the terminal device, a time domain resource used for each of the transmissions using the specific boundary as a reference according to a time offset of each of the transmissions with respect to the specific time unit.
The method according to claim 7, wherein the specific time unit is determined according to a time unit carrying the first control information, or a first time unit of a current radio frame, or a first time unit of a current radio frame period.
The method according to any one of claims 1 to 8, wherein the first control information comprises a second bitmap, the second bitmap is used to determine a frequency domain resource of the multiple transmissions of the sidelink, each bit in the second bitmap corresponds to at least one frequency domain unit in a system, and a value of each bit in the second bitmap is used to determine whether the frequency domain unit corresponding to each bit can be used for sidelink transmission.
The method according to any one of claims 1 to 8, wherein the first control information comprises third configuration information, and the third configuration information is used to determine frequency domain resource length information of each of the multiple transmissions of the sidelink.
The method according to claim 1, wherein the frequency domain resource length information of each of the multiple transmissions is pre-configured on the terminal device.
The method according to claim 10, wherein the first control information comprises fourth configuration information, the fourth configuration information is used to determine a frequency domain start position of each of the multiple transmissions, and the determining, by the terminal device, the resource used for the multiple transmissions of the sidelink according to the first control information comprises: determining, by the terminal device, the frequency domain resource length information of each of the multiple transmissions of the sidelink according to the third configuration information, and determining the frequency domain start position of each of the multiple transmissions according to the fourth configuration information; and determining, by the terminal device, the frequency domain resource of each of the multiple transmissions according to the frequency domain start position and the frequency domain resource length information of each of the multiple transmissions.
The method according to claim 1, wherein the first control information is downlink control information, DCI, and the sidelink comprises a sidelink control channel, PSCCH, and/or a sidelink shared channel, PSSCH.
A terminal device, comprising: a processor (610); and a memory (620) storing a computer program; wherein the processor (610) is configured to call and run the computer program stored in the memory (620), and execute the method for transmitting data according to any one of claims 1-13.
A computer program product, comprising computer program instructions that cause a computer to execute the method according to any one of claims 1 to 13.

Description

This is a divisional application of European Patent Application No. 18925199.4 filed on July 05, 2018, and entitled "METHOD FOR TRANSMITTING DATA IN INTERNET OF VEHICLES, AND TERMINAL DEVICE". TECHNICAL FIELD The embodiments of the present application relate to the field of communications, and in particular, to a method for transmitting data in Internet of Vehicles and a terminal device. BACKGROUND The Internet of Vehicles system is a sidelink (Sidelink, SL) transmission technology based on the Long Term Evaluation Vehicle to Vehicle (LTE V2V). Different from the manner of receiving or sending communication data through the base station in the traditional LTE system, the Internet of Vehicles system adopts terminal-to-terminal direct communication, so it has higher spectrum efficiency and lower transmission delay than the traditional LTE system. In the Internet of Vehicles system, the data transmission resources of the terminal device on the sidelink can be determined by the network device. Specifically, the terminal device may receive Downlink Control Information (DCI) from the network device, and then determine the transmission resource of the sidelink data according to the downlink control information, where the DCI carries the control information corresponding to the sidelink data transmission, such as time-frequency resource allocation information, etc. The terminal device that receives the DCI obtains information such as the time-frequency resource location for data transmission by detecting the DCI, and transmits sidelink data on the time-frequency resource. The Vehicle to Everything (V2X) system based on New Radio (NR) needs to support automatic driving, which puts forward a relatively high requirement for data interaction between vehicles, such as a higher reliability requirement. Therefore, how to achieve reliable transmission of the sidelink is an urgent problem to be solved. Related technologies are known from a 3GPP Draft R1-166515, titled "Details of resource pool design for sidelink V2V communication", INTEL CORPORATION; a 3GPP Draft R1-166516, titled "Scheduling assignment for sidelink V2V communication", INTEL CORPORATION; a 3GPP Draft R1-164103, titled "Discussion on SCI contents for V2V", HUAWEI et al.; a 3GPP Draft, titled "UE procedures related to Sidelink"; and a 3GPP Draft R1-160394, titled "Enhancement to resource pool structure of PC5-based V2V", NEC; and a patent application publication US2017/289733A1. SUMMARY The invention is defined by the independent claims. The embodiments of the present application provide a method for transmitting data in Internet of Vehicles and a terminal device, for determining the resources used for multiple transmissions of the sidelink, which realizes multiple transmissions of sidelink data, and is beneficial to provide reliability of data transmission. In a first aspect, a method for transmitting data in Internet of Vehicles is provided, including: receiving, by a terminal device, first control information sent by a network device, wherein the first control information is used to determine resource information used for multiple transmissions of a sidelink; and determining, by the terminal device, a resource used for the multiple transmissions of the sidelink according to the first control information. In a second aspect, a terminal device is provided, which is used to execute the foregoing first aspect or any possible implementation of the first aspect. Specifically, the terminal device includes a unit for executing the foregoing first aspect or any possible implementation manner of the first aspect. In a third aspect, a terminal device is provided. The terminal includes a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the above-mentioned first aspect or each of its implementation manners. In a fourth aspect, a chip is provided, which is used to implement the method in the first aspect or its implementation manners. Specifically, the chip includes a processor, used to call and run a computer program from the memory, so that a device installed with the chip executes the method in the first aspect or its implementation manners. In a fifth aspect, a computer-readable storage medium is provided for storing a computer program that enables a computer to execute the method in the first aspect or its implementation manners. In a sixth aspect, a computer program product is provided, including computer program instructions that cause a computer to execute the method in the first aspect or its implementation manners. In a seventh aspect, a computer program is provided, which when running on a computer, causes the computer to execute the method in the first aspect or its implementation manners. Based on the above technical solutions, the terminal device can determine the resources used for multiple transmissions of the sidelink acco