US-12627432-B2 - Data transmission method and apparatus, communication device and storage medium

US12627432B2US 12627432 B2US12627432 B2US 12627432B2US-12627432-B2

Abstract

A data transmission apparatus, a data transmission device, and a storage medium implement a method belonging in the technical field of wireless communications, where the method comprises: on the basis of a trigger condition, determining to perform demodulation reference signal (DMRS) sharing during a data transmission process. Thus, on the basis of signal state information received within a continuous period of time, it is determined whether to start a mechanism for terminating data retransmission. Thus, by means of the data transmission method, during a data transmission process, on the basis of a pre-set trigger condition, a plurality of actual repetitions are triggered at an appropriate time to share DMRSs, such that the DMRS overhead is reduced, and more channel resources and transmission power are distributed for data transmission, thereby improving the encoding rate and the coverage of channels.

Inventors

Yang Liu

Assignees

BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.

Dates

Publication Date: 20260512
Application Date: 20201229

Claims (16)

1 . A method for transmitting data, performed by a first data transmission device and comprising: determining that a demodulation reference signal (DMRS) is shared during a data transmission process according to a trigger condition; wherein determining that the DMRS is shared during the data transmission process according to the trigger condition comprises: in response to a plurality of consecutive adjacent actual repetitions in the data transmission process having a length less than or equal to a specified length, determining that the DMRS is shared by the plurality of consecutive adjacent actual repetitions; wherein the length of the plurality of consecutive adjacent actual repetitions is indicated by any one of a total length of sub-slots, and a total length of slots.
2 . The method of claim 1 , further comprising: in response to not meeting the trigger condition, determining that the DMRS is not shared during the data transmission process.
3 . The method of claim 1 , wherein determining that the DMRS is shared during the data transmission process according to the trigger condition comprises: in response to a same nominal repetition comprising a plurality of actual repetitions in the data transmission process, determining that the DMRS is shared by the plurality of actual repetitions.
4 . The method of claim 1 , wherein the trigger condition comprises at least one of: a user equipment (UE) being in a specified state, a type of data repetition being a specified type, a channel quality indicator (CQI) being in a first specified range, a signal-to-noise ratio (SNR) being in a second specified range, and a frequency hopping not occurring in a data transmission channel.
5 . The method of claim 1 , further comprising: determining the trigger condition according to indication information sent by a second data transmission device, wherein the second data transmission device is a device performing data interaction with the first data transmission device.
6 . The method of claim 5 , wherein the indication information is any one of following types of information: radio resource control (RRC) information, a media access control layer (MAC) control element (CE) and downlink control information (DCI).
7 . The method of claim 1 , wherein the first data transmission device is a data sending device, and the method further comprises: in response to the DMRS being not shared between one actual repetition of actual repetitions and any other actual repetitions of the actual repetitions in a data bearer, inserting the DMRS into the one actual repetition of the actual repetitions.
8 . The method of claim 7 , wherein inserting the DMRS into the one actual repetition comprises: determining a position of an intermediate symbol of the one actual repetition according to a number of symbols comprised in the one actual repetition; and inserting the DMRS at the position where the intermediate symbol of the one actual repetition is located.
9 . The method of claim 7 , wherein determining that the DMRS is shared during the data transmission process according to the trigger condition comprises: in response to acquiring an indication message for starting a DMRS sharing mechanism sent by a data receiving device, starting the DMRS sharing mechanism so as to determine that the DMRS is shared during the data transmission process according to the trigger condition.
10 . The method of claim 1 , wherein the first data transmission device is a data receiving device, and the method further comprises: sending an indication message for starting a DMRS sharing mechanism to a data sending device.
11 . A first data transmission device, comprising: a transceiver; a memory; a processor, coupled to the transceiver and the memory, and configured to control the transceiver to send or receive a wireless signal and implement a method for transmitting data by executing computer-executable instructions stored on the memory, wherein the method comprises: determining that a DMRS is shared during a data transmission process according to a trigger condition; wherein determining that the DMRS is shared during the data transmission process according to the trigger condition comprises: in response to a plurality of consecutive adjacent actual repetitions in the data transmission process having a length less than or equal to a specified length, determining that the DMRS is shared by the plurality of consecutive adjacent actual repetitions; wherein the length of the plurality of consecutive adjacent actual repetitions is indicated by any one of a total length of sub-slots, and a total length of slots.
12 . The first data transmission device of claim 11 , wherein the method further comprises: in response to not meeting the trigger condition, determining that the DMRS is not shared during the data transmission process.
13 . The first data transmission device of claim 11 , wherein determining that the DMRS is shared during the data transmission process according to the trigger condition comprises: in response to a same nominal repetition comprising a plurality of actual repetitions in the data transmission process, determining that the DMRS is shared by the plurality of actual repetitions.
14 . The first data transmission device of claim 11 , wherein the trigger condition comprises at least one of: a user equipment (UE) being in a specified state, a type of data repetition being a specified type, a channel quality indicator (CQI) being in a first specified range, a signal-to-noise ratio (SNR) being in a second specified range, and a frequency hopping not occurring in a data transmission channel.
15 . The first data transmission device of claim 11 , the method further comprises: determining the trigger condition according to indication information sent by a second data transmission device, wherein the second data transmission device performs data interaction with the first data transmission device.
16 . A non-transitory computer-readable storage medium having stored therein computer-executable instructions that, when executed by a processor, cause the processor to implement a method for transmitting data, the method comprising: determining that a DMRS is shared during a data transmission process according to a trigger condition; wherein determining that the DMRS is shared during the data transmission process according to the trigger condition comprises: in response to a plurality of consecutive adjacent actual repetitions in the data transmission process having a length less than or equal to a specified length, determining that the DMRS is shared by the plurality of consecutive adjacent actual repetitions; wherein the length of the plurality of consecutive adjacent actual repetitions is indicated by any one of a total length of sub-slots, and a total length of slots.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS The present application is a National Stage of International Application No. PCT/CN2020/140737, filed on Dec. 29, 2020, the contents of which are incorporated herein by reference for all purposes. FIELD The present disclosure relates to the field of wireless communication technologies, and more particularly, to a data transmission method and apparatus, a data transmission device and a storage medium. BACKGROUND In the field of mobile communication, a Repetition Type B-based transmission between a base station and a user equipment (UE) may go across the time slot during the transmission process or encounter an unavailable symbol during the transmission process. The Repetition Type B introduces the concept of actual repetition for this case where the transmission spans the slot or where a symbol is unavailable during the transmission process. In the Repetition Type B, a transmission refers to a nominal repetition (a nominal transmission), and when the above situation happens to the nominal repetition, the nominal repetition is split into a plurality of actual repetitions by segmentation. SUMMARY According to an aspect of embodiments of the present disclosure, there is provided a method for transmitting data, performed by a first data transmission device, and including: determining that a demodulation reference signal (DMRS) is shared during a data transmission process according to a trigger condition. According to another aspect of embodiments of the present disclosure, there is provided an apparatus for transmitting data, applied to a first data transmission device and including: a first determining module configured to determine that a DMRS is shared during a data transmission process according to a trigger condition. According to yet another aspect of embodiments of the present disclosure, there is provided a data transmission device, including: a transceiver; a memory; a processor, coupled to the transceiver and the memory, and configured to control the transceiver to send or receive a wireless signal and implement the method as described above by executing computer-executable instructions stored on the memory. According to a further aspect of embodiments of the present disclosure, there is provided a non-transitory computer-readable storage medium having stored thereon computer-executable instructions that, when executed by a processor, cause the processor to implement the method as described above. Additional aspects and advantages of the embodiments of present disclosure will be given in part in the following descriptions, become apparent in part from the following descriptions, or be learned from the practice of the embodiments of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS These and other aspects and advantages of the embodiments of the present disclosure will become apparent and more readily appreciated from the following descriptions made with reference to the accompanying drawings, in which: FIG. 1 is a flowchart of a method for transmitting data provided by embodiments of the present disclosure; FIG. 2 is a schematic diagram illustrating a plurality of actual repetitions segmented from a same nominal repetition sharing a DMRS; FIG. 3 is a schematic diagram illustrating consecutive adjacent actual repetitions sharing a DMRS; FIG. 4 is a flowchart of another method for transmitting data provided by embodiments of the present disclosure; FIG. 5 is a flowchart of yet another method for transmitting data provided by embodiments of the present disclosure; FIG. 6 is a flowchart of a further method for transmitting data provided by embodiments of the present disclosure; FIG. 7 is a schematic diagram illustrating an apparatus for transmitting data provided by embodiments of the present disclosure; FIG. 8 is a block diagram illustrating a user equipment provided by embodiments of the present disclosure; FIG. 9 is a schematic diagram illustrating a base station provided by embodiments of the present disclosure. DETAILED DESCRIPTION Embodiments of the present disclosure are described in detail below with reference to examples illustrated in the accompanying drawings. In the drawings, the same or similar elements and the elements having same or similar functions are denoted by the same or similar reference numerals throughout the descriptions. Embodiments described in the following examples do not represent all embodiments that are consistent with the present disclosure, and they are only examples of devices and methods consistent with aspects in the description and the appended claims. Terms used herein in embodiments of the present disclosure are only for the purpose of describing specific embodiments, but should not be construed to limit the present disclosure. As used in the embodiments of the present disclosure and the appended claims, “a/an”, “said” and “the” in singular forms are intended to include plural forms, unless clearly indicated in the cont