Method and apparatus for indicating number of repetitions

Patent metadata

Field	Value
Publication number	US-12550136-B2
Application number	US-202217843650-A
Country	US
Kind code	B2
Filing date	Jun 17, 2022
Priority date	Dec 17, 2019
Publication date	Feb 10, 2026
Grant date	Feb 10, 2026

Abstract

A method for indicating a number of repetitions, so that a configuration of a number of repetitions of a sounding reference signal (SRS) and/or a physical uplink shared channel (PUSCH) is more adaptive to a channel change, includes: A network device sends downlink control information (DCI) to a terminal device, where the DCI includes first indication information, and the first indication information indicates a number of repetitions of an SRS and/or a PUSCH. Because the DCI has a faster update process than radio resource control (RRC) signaling, and overheads are smaller than those of the RRC signaling, the network side device may flexibly configure the number of repetitions of the SRS and/or the PUSCH by using the DCI, to better adapt to the channel change, and further improve a channel estimation capability and signal demodulation performance.

First claim

What is claimed is:

1 . A method for determining a number of sounding reference signal (SRS) and/or physical uplink shared channel (PUSCH) repetitions, comprising:
receiving, by a terminal, trigger information from a network side device via a first radio resource control (RRC) signaling, wherein the trigger information indicates that the terminal is to determine a first number of SRS and/or PUSCH repetitions from a valid modulation and coding scheme (MCS) index value of an MCS field of downlink control information (DCI), and wherein the trigger information corresponds to an RRC signaling dynamic repetition parameter being set to a first value; receiving, by the terminal, the DCI from the network side device; and determining, by the terminal, the first number of SRS and/or PUSCH repetitions from the valid MCS index value of the MCS field of the DCI, wherein the valid MCS index value indicates a communication parameter to the terminal, wherein the communication parameter indicates a modulation order and code rate for a PUSCH; wherein the method further comprises:
receiving, by the terminal from the network side device, a second RRC signaling in which a second RRC signaling dynamic repetition parameter is set to a second value different from the first value; and
receiving, by the terminal, second DCI from the network side device, wherein, based on the second RRC signaling dynamic repetition parameter being set to the second value, the terminal does not attempt to determine a number of SRS and/or PUSCH repetitions from a second valid MCS index value of a second MCS field of the second DCI;
wherein for a plurality of respective DCI, respective valid MCS index values indicate respective combinations of numbers of SRS and PUSCH repetitions.

2 . A method for indicating a number of sounding reference signal (SRS) and/or physical uplink shared channel (PUSCH) repetitions, comprising:
sending, by a network side device, trigger information to a terminal via a first radio resource control (RRC) signaling, wherein the trigger information indicates that the terminal is to determine a first number of SRS and/or PUSCH repetitions from a valid modulation and coding scheme (MCS) index value of an MCS field of downlink control information (DCI), and wherein the trigger information corresponds to an RRC signaling dynamic repetition parameter being set to a first value; and sending, by the network side device, the DCI to the terminal, wherein the DCI comprises the valid MCS index value of the MCS field indicating the first number of SRS and/or PUSCH repetitions, wherein the valid MCS index value indicates a communication parameter to the terminal, wherein the communication parameter indicates a modulation order and code rate for a PUSCH; wherein the method further comprises:
sending, by the network side device to the terminal, a second RRC signaling in which a second RRC signaling dynamic repetition parameter is set to a second value different from the first value, wherein the second RRC signaling dynamic repetition parameter being set to the second value indicates to the terminal not to attempt to determine a number of SRS and/or PUSCH repetitions from a second valid MCS index value of a second MCS field of second DCI; and
sending, by the network side device, the second DCI to the terminal;
wherein for a plurality of respective DCI, respective valid MCS index values indicate respective combinations of numbers of SRS and PUSCH repetitions.

3 . An apparatus for determining a number of sounding reference signal (SRS) and/or physical uplink shared channel (PUSCH) repetitions, comprising:
at least one processor; and a memory storing programming instructions for execution by the at least one processor; wherein the at least one processor is configured to execute the programming instructions to facilitate performance of the following operations by the apparatus:
receiving trigger information from a network side device via a first radio resource control (RRC) signaling, wherein the trigger information indicates that the apparatus is to determine a first number of SRS and/or PUSCH repetitions from a valid modulation and coding scheme (MCS) index value of an MCS field of downlink control information (DCI), and wherein the trigger information corresponds to an RRC signaling dynamic repetition parameter being set to a first value;
receiving the DCI from the network side device; and
determining the first number of SRS and/or PUSCH repetitions from the valid MCS index value of the MCS field of the DCI, wherein the valid MCS index value indicates a communication parameter to the apparatus, wherein the communication parameter indicates a modulation order and code rate for a PUSCH;
wherein the at least one processor is further configured to execute the programming instructions to facilitate performance of the following operations by the apparatus:
receiving, from the network side device, a second RRC signaling in which a second RRC signaling dynamic repetition parameter is set to a second value different from the first value, wherein the second RRC signaling dynamic repetition parameter being set to the second value indicates to the apparatus not to attempt to determine a number of SRS and/or PUSCH repetitions from a second valid MCS index value of a second MCS field of second DCI; and
receiving the second DCI from the network side device;
wherein for a plurality of respective DCI, respective valid MCS index values indicate respective combinations of numbers of SRS and PUSCH repetitions.

4 . An apparatus for indicating a number of sounding reference signal (SRS) and/or physical uplink shared channel (PUSCH) repetitions, comprising:
at least one processor; and a memory storing programming instructions for execution by the at least one processor; wherein the at least one processor is configured to execute the programming instructions to facilitate performance of the following operations by the apparatus:
sending trigger information to a terminal via a first radio resource control (RRC) signaling, wherein the trigger information indicates that the terminal is to determine a first number of SRS and/or PUSCH repetitions from a valid modulation and coding scheme (MCS) index value of an MCS field of downlink control information (DCI), and wherein the trigger information corresponds to an RRC signaling dynamic repetition parameter being set to a first value; and
sending the DCI to the terminal, wherein the DCI comprises the valid MCS index value of the MCS field indicating the first number of SRS and/or PUSCH repetitions, wherein the valid MCS index value indicates a communication parameter to the terminal, wherein the communication parameter indicates a modulation order and code rate for a PUSCH;
wherein the at least one processor is further configured to execute the programming instructions to facilitate performance of the following operations by the apparatus:
sending, to the terminal, a second RRC signaling in which a second RRC signaling dynamic repetition parameter is set to a second value different from the first value, wherein the second RRC signaling dynamic repetition parameter being set to the second value indicates to the terminal not to attempt to determine a number of SRS and/or PUSCH repetitions from a second valid MCS index value of a second MCS field of second DCI; and
sending the second DCI to the terminal;
wherein for a plurality of respective DCI, respective valid MCS index values indicate respective combinations of numbers of SRS and PUSCH repetitions.

5 . The method according to claim 1 , wherein for three respective DCI including a first respective DCI, a second respective DCI, and a third respective DCI, first, second and third respective valid MCS index values indicate first, second and third r

Assignees

• Huawei Tech Co Ltd

Inventors

• Yu Yawei
• Guo Zhiheng
• Xie Xinqian
• Fei Yongqiang

Classifications

• H04W72/23

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04L5/0051

  of dedicated pilots, i.e. pilots destined for a single user or terminal · CPC title

• H04L1/08

  by repeating transmission, e.g. Verdan system {(H04L1/1858 and H04L1/189 take precedence)} · CPC title

• H04L1/0004

  applied to control information · CPC title

• H04W72/231

  the control data signalling from the layers above the physical layer, e.g. RRC or MAC-CE signalling · CPC title