Search

EP-4738740-A1 - TRANSMISSION METHOD, FIRST TERMINAL AND NETWORK DEVICE

EP4738740A1EP 4738740 A1EP4738740 A1EP 4738740A1EP-4738740-A1

Abstract

The present application relates to a transmission method, a first terminal, a network device, a chip, a computer-readable storage medium, a computer program product, a computer program and a communication system. The transmission method comprised: after using a first transmission mode to transmit a first message for the first time, a first terminal using a second transmission mode to retransmit the first message, wherein the second transmission mode is different from the first transmission mode. By means of the embodiments of the present application, the data transmission performance can be improved.

Inventors

  • CUI, Shengjiang

Assignees

  • GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.

Dates

Publication Date
20260506
Application Date
20230630

Claims (20)

  1. A transmission method, comprising: retransmitting, by a first terminal after performing an initial transmission of a first message by using a first transmission mode, the first message by using a second transmission mode; wherein the second transmission mode is different from the first transmission mode.
  2. The method according to claim 1, wherein the second transmission mode being different from the first transmission mode, comprises: a signal transmission mode in the second transmission mode is different from a signal transmission mode in the first transmission mode; and/or a transmission configuration in the second transmission mode is different from a transmission configuration in the first transmission mode.
  3. The method according to claim 2, wherein the signal transmission mode comprises an active transmission mode and/or a backscatter mode.
  4. The method according to claim 2 or 3, wherein the transmission configuration comprises at least one of: transmission power; a transmission beam; a frequency-domain resource configuration; a time-domain resource configuration; a modulation mode; an encoding mode; a waveform; an encoding configuration; or a spreading configuration.
  5. The method according to claim 4, wherein the frequency-domain resource configuration comprises positions of frequency-domain resources and/or a number of the frequency-domain resources.
  6. The method according to claim 4 or 5, wherein the time-domain resource configuration comprises at least one of: a number of time-domain resources; a length of time-domain resources; a time-domain length of single-bit data; or a time-domain length of a single modulated symbol.
  7. The method according to any one of claims 4 to 6, wherein the encoding configuration comprises at least one of: a code rate; a code length; a chip length; or a number of chips in single-bit data.
  8. The method according to any one of claims 4 to 7, wherein the spreading configuration comprises a spreading factor and/or a spreading sequence.
  9. The method according to any one of claims 1 to 8, wherein retransmitting the first message is triggered in a case where a first condition is satisfied.
  10. The method according to claim 9, wherein the first condition comprises at least one of: a response message for the first message being not received by the first terminal at a first time window or a first time-domain position after transmitting the first message; a second message being received by the first terminal at a second time window or a second time-domain position after transmitting the first message; wherein the second message is used to indicate the first terminal to retransmit the first message; the first message transmitted by the first terminal colliding with a third message sent from a second terminal; or strength of a first signal received by the first terminal from a network device being lower than a first threshold.
  11. The method according to claim 10, wherein the response message comprises at least one of: an acknowledgement message for the first message; first indication information, the first indication information being used to schedule a data transmission of the first terminal; or a fourth message, a transmission of which is triggered by the first message.
  12. The method according to claim 10 or 11, wherein a position of the first time window or the first time-domain position is determined based on time of transmitting the first message and first time-domain offset information.
  13. The method according to claim 12, wherein the first time-domain offset information is pre-specified or configured by a network device.
  14. The method according to any one of claims 10 to 13, wherein a length of the first time window is pre-specified or configured by a network device.
  15. The method according to any one of claims 10 to 14, wherein the second message comprises at least one of: a negative acknowledgement message for the first message; second indication information, the second indication information being used to indicate the first terminal to retransmit the first message; third indication information, the third indication information being used to indicate that a type of data to be transmitted by the first terminal is scheduled to be retransmission data; or fourth indication information, the fourth indication information being used to indicate a transmission mode for retransmitting the first message.
  16. The method according to any one of claims 10 to 15, wherein a position of the second time window or the second time-domain position is determined based on time of transmitting the first message and second time-domain offset information.
  17. The method according to claim 16, wherein the second time-domain offset information is pre-specified or configured by a network device.
  18. The method according to any one of claims 10 to 17, wherein a length of the second time window is pre-specified or configured by a network device.
  19. The method according to any one of claims 1 to 18, wherein the second transmission mode is determined based on first reference information, and the first reference information comprises at least one of: strength of a second signal received by the first terminal from a network device; a number of retransmissions of the first message; or a transmission duration of the first message.
  20. The method according to claim 19, wherein retransmitting the first message by using the second transmission mode, comprises: retransmitting, by the first terminal, the first message by using the second transmission mode different from the first transmission mode, in a case where the first reference information satisfies a second condition.

Description

TECHNICAL FIELD The present disclosure relates to the field of communications, and more specifically, to a transmission method, a first terminal, a network device, a chip, a computer-readable storage medium, a computer program product, a computer program, and a communication system. BACKGROUND A basic purpose of communications is to complete a task of delivering and exchanging information timely and accurately, and thus, transmission performance is particularly important in communication systems. In order to improve the transmission performance, when message sending fails, a data retransmission may be attempted. It is necessary to consider how to improve a probability of transmitting data correctly when the retransmission. SUMMARY Embodiments of the present disclosure provide a transmission method, including: retransmitting, by a first terminal after performing an initial transmission of a first message by using a first transmission mode, the first message by using a second transmission mode; where the second transmission mode is different from the first transmission mode. Embodiments of the present disclosure provide a transmission method, including: receiving, by a network device after receiving an initial transmission of a first message from a first terminal using a first transmission mode, a retransmission of the first message from the first terminal using a second transmission mode; where the second transmission mode is different from the first transmission mode. Embodiments of the present disclosure provide a first terminal, including: a first communication module, configured to, after performing an initial transmission of a first message by using a first transmission mode, retransmit the first message by using a second transmission mode; where the second transmission mode is different from the first transmission mode. Embodiments of the present disclosure provide a network device, including: a second communication module, configured to receive, after receiving an initial transmission of a first message from a first terminal using a first transmission mode, a retransmission of the first message from the first terminal using a second transmission mode; where the second transmission mode is different from the first transmission mode. Embodiments of the present disclosure provide a first terminal, including a processor and a memory. The memory is configured to store a computer program, and the processor is configured to call and run the computer program stored in the memory, so that the first terminal performs the above-mentioned transmission method. Embodiments of the present disclosure provide a network device, including a processor and a memory. The memory is configured to store a computer program, and the processor is configured to call and run the computer program stored in the memory, so that the network device performs the above-mentioned transmission method. Embodiments of the present disclosure provide a chip, configured to implement the above-mentioned transmission methods. Specifically, the chip includes: a processor, configured to call and run a computer program from a memory to cause a device equipped with the chip to perform the above-mentioned transmission methods. Embodiments of the present disclosure provide a computer-readable storage medium, configured to store a computer program, and the computer program, when run by a device, causes the device to perform the above-mentioned transmission methods. Embodiments of the present disclosure provide a computer program product, including computer program instructions, and the computer program instructions cause a computer to perform the above-mentioned transmission methods. Embodiments of the present disclosure provide a computer program that, when running on a computer, causes the computer to perform the above-mentioned transmission methods. Embodiments of the present disclosure provide a communication system, including a first terminal and a network device configured to perform the above-mentioned transmission methods. In the embodiments of the present disclosure, the first terminal, after performing an initial transmission of a first message, retransmits the first message by using a second transmission mode different from a first transmission mode for the initial transmission, so that the probability of transmitting data correctly during the retransmission may be improved, thereby improving data transmission performance. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of a communication system according to the embodiments of the present disclosure.FIG. 2 is a schematic diagram of a zero-power consumption communication network.FIG. 3 is a schematic diagram of radio frequency power harvesting.FIG. 4 is a schematic diagram of a backscatter communication.FIG. 5 is a schematic diagram of resistance load modulation.FIG. 6 is a schematic diagram of power control of a PRACH.FIG. 7 is a schematic flowchart of a transmission method ac