CN115189840A

CN115189840A - Data transmission method and device and terminal equipment

Info

Publication number: CN115189840A
Application number: CN202110363819.4A
Authority: CN
Inventors: 张萌
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2021-04-02
Filing date: 2021-04-02
Publication date: 2022-10-14

Abstract

The application discloses a data transmission method, a data transmission device and terminal equipment, wherein the method comprises the following steps: acquiring first indication information, wherein the first indication information is used for indicating that M times of transmissions of a demodulation reference signal (DMRS) exist in N times of transmissions of an uplink physical shared channel (PUSCH) in a time window Timedomnwindow; wherein M < N, N, M is a positive integer; and transmitting the PUSCH according to the first indication information, wherein M transmissions in the N transmissions of the PUSCH all carry the DMRS. The PUSCH within the time window may be indicated to carry the DMRS or not carry the DMRS according to the first indication information.

Description

Data transmission method and device and terminal equipment

Technical Field

The present application relates to the field of communications technologies, and in particular, to a data transmission method, an apparatus, and a terminal device.

Background

Currently, in the field of mobile communication, uplink coverage may be limited due to various factors such as limited transmission power of a terminal device or complex and variable channel environments. Therefore, a coverage enhancement scheme can be adopted to improve the uplink coverage performance.

In the third Generation Partnership project (3 gpp), it is mentioned that the number of Physical Uplink Shared Channels (PUSCHs) carrying Demodulation Reference signals (DMRS) within a Time window (Time domain window) may be reduced, and Time-frequency resources of the DMRS transmitting the PUSCH are used to transmit Uplink data in the PUSCH, so that more Time-frequency resources may be used to transmit Uplink data in the PUSCH, and a code-rate of the Uplink data in the PUSCH may be reduced, thereby improving a Signal to Noise Ratio (SNR) of the Uplink Channel and improving Uplink coverage performance.

Therefore, how to indicate whether the PUSCH in the time window carries the DMRS is a problem that needs to be solved urgently.

Disclosure of Invention

The embodiment of the application provides a data transmission method. The method indicates that the PUSCH in the time window carries the DMRS or does not carry the DMRS according to the first indication information.

In a first aspect, an embodiment of the present application provides a data transmission method, where the data transmission method includes:

acquiring first indication information, wherein the first indication information is used for indicating M transmissions of a DMRS in N transmissions of a PUSCH in a time window; wherein M < N, N, M is a positive integer;

and transmitting the PUSCH according to the first indication information, wherein M transmissions in N transmissions of the PUSCH all carry the DMRS.

Based on the method described in the first aspect, the terminal device may obtain the first indication information, and transmit the PUSCH N times within the time window according to the first indication information. Since the first indication information indicates that there are M transmissions of the DMRS in the N transmissions of the PUSCH within the time window, when the terminal device transmits the PUSCH N times, the DMRS is carried in the M transmissions of the N transmissions of the PUSCH. Whether the PUSCH in the time window carries the DMRS can be indicated through the first indication information, so that the terminal equipment can reduce the PUSCH carrying the DMRS according to the first indication information, further more time-frequency resources can be utilized to transmit uplink data, the coding rate is improved, and the uplink coverage is improved.

With reference to the first aspect, in some possible embodiments, transmissions of the N transmissions of the PUSCH other than the M transmissions do not carry the DMRS.

With reference to the first aspect, in some possible embodiments, the time window is configured by Downlink Control Information (DCI) or Radio Resource Control (RRC).

In conjunction with the first aspect, in some possible embodiments, the time window is determined based on the number of PUSCH transmissions, N.

With reference to the first aspect, in some possible embodiments, when the same Transport Block (TB) is transmitted in N transmissions of the PUSCH, the starting position of the time window is the first symbol of the PUSCH transmitted for the first time, and the ending position of the time window is the last symbol of the PUSCH transmitted for the nth time.

In combination with the first aspect, in some possible embodiments,

the first indication information is a bitmap, and the bitmap is repeated in a time window, so that each transmission in N transmissions corresponds to one bit; and when one bit is a first value, indicating that the corresponding transmission carries the DMRS.

In combination with the first aspect, in some possible embodiments,

the first indication information is a bitmap;

the bitmap is repeated within a time window such that each actual transmission of the N transmissions corresponds to a respective bit; when one bit is a first value, the bit is used for indicating that the corresponding one-time actual transmission carries the DMRS; alternatively, the first and second electrodes may be,

the bitmap of bits is repeated within a time window such that each nominal (nominal) transmission of the N transmissions corresponds to a respective one of the bits; when one bit is a first value, the bit is used for indicating that the corresponding one-time nominal transmission carries the DMRS; alternatively, the first and second liquid crystal display panels may be,

the bit map is repeated in the time window, so that each time slot in N times of transmission corresponds to one bit respectively; and when one bit is a first value, indicating that the transmission in the corresponding one time slot carries the DMRS.

With reference to the first aspect, in some possible embodiments, the first indication information is configured by DCI or configured by RRC.

With reference to the first aspect, in some possible embodiments, the indexes of the DMRS patterns in N transmissions correspond to the indexes of the time windows one to one, and are predefined;

the DMRS pattern is used to indicate DMRS-carrying transmission and DMRS-not-carrying transmission in N transmissions.

In combination with the first aspect, in some possible embodiments,

if the first indication information indicates that the time window corresponds to a predefined constant, the DMRS is carried by the transmission with the remainder of the corresponding times to the constant being equal to zero in the N transmissions, or the DMRS is carried by the time slot with the remainder of the corresponding index to the constant being equal to zero in the N transmissions.

With reference to the first aspect, in some possible embodiments, the first indication information indicates a number N of transmissions within a time window, and the DMRS patterns correspond to a number range in which the number N of transmissions within the time window is located; alternatively, the first and second electrodes may be,

the first indication information indicates the total number K of the time slots in the time window, and the DMRS patterns correspond to the number range of the total number K of the time slots in the time window in a one-to-one mode.

With reference to the first aspect, in some possible embodiments, the N transmissions of PUSCH include one or more of a repeated transmission and an independent transmission.

In combination with the first aspect, in some possible embodiments, the DMRS includes one or more of a preamble DMRS and an additional DMRS.

In a second aspect, an embodiment of the present application provides a data transmission apparatus, including:

an obtaining unit, configured to obtain first indication information, where the first indication information is used to indicate that M transmissions of a DMRS exist in N transmissions of a PUSCH within a time window; wherein M < N, N, M is a positive integer;

and the transmission unit is used for transmitting the PUSCH according to the first indication information, and M transmissions in the N transmissions of the PUSCH all carry the DMRS.

In a third aspect, an embodiment of the present application provides a terminal device, where the terminal device includes a processor and a memory, and the processor is connected to the memory, where the memory is used to store a program code, and the processor is used to call the program code to execute the data transmission method of the first aspect.

In a fourth aspect, an embodiment of the present application provides a chip, where the chip is configured to obtain first indication information, where the first indication information is used to indicate that M transmissions of a DMRS exist in N transmissions of a PUSCH in a time window; wherein M < N, N, M is a positive integer;

and transmitting the PUSCH according to the first indication information, wherein M transmissions in the N transmissions of the PUSCH all carry the DMRS.

In a fifth aspect, an embodiment of the present application provides a chip module, where the module device includes a processor and a communication interface, the processor is connected to the communication interface, the communication interface is used for receiving and transmitting signals, and the processor is used for:

In a sixth aspect, the present application provides a computer-readable storage medium, where a computer program is stored, and the computer program is executed by a processor to implement the data transmission method of the first aspect.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

Fig. 1 is a schematic structural diagram of a network architecture according to an embodiment of the present application;

fig. 2 is a schematic configuration diagram of DCI provided in an embodiment of the present application;

fig. 3 is a schematic flowchart of a data transmission method according to an embodiment of the present application;

FIG. 4 is a schematic diagram of a data transmission provided by an embodiment of the present application;

fig. 5 is a corresponding relationship between a number range and a DMRS pattern provided in an embodiment of the present application;

fig. 6 is a schematic flowchart of another data transmission method provided in an embodiment of the present application;

fig. 7 is a schematic structural diagram of a data transmission device according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

Currently, in the field of mobile communication, uplink coverage may be limited due to various factors such as limited transmission power of a terminal device or complex and variable channel environment. In order to improve uplink coverage performance, the terminal device may adopt an uplink coverage enhancement scheme.

For uplink coverage enhancement, a time window is introduced in Release17 of 3 GPP. In the time window, the number of PUSCHs carrying the DMRS can be reduced, and the time-frequency resources for transmitting the DMRS are used for transmitting uplink data, so that more time-frequency resources can be used for transmitting the uplink data, the coding rate of the uplink data is reduced, the SNR of an uplink channel is improved, and the uplink coverage performance is improved. Therefore, how to distinguish whether the PUSCH in the time window carries the DMRS is a problem that needs to be solved urgently.

Based on the above description, an embodiment of the present application provides a data transmission method. In the method, the terminal device may first acquire the indication information. And then transmits the PUSCH according to the indication information. The terminal equipment can judge whether the PUSCH transmitted each time in the time window carries the DMRS according to the indication information, and transmits the PUSCH for N times in the time window based on the indication information, so that time-frequency resources for transmitting the DMRS can be reduced, more time-frequency resources are used for transmitting uplink data of the PUSCH, the coding rate of the uplink data is reduced, the SNR of an uplink channel is improved, and the uplink coverage performance is improved.

The data transmission method of the embodiment of the application can be applied to a network system. Referring to fig. 1, fig. 1 shows an architecture diagram of a network system. As shown in fig. 1, the network system may include a terminal device 10 and a network device 20. The terminal device 10 and the network device 20 establish a communication connection, for example, the terminal device 10 may establish a communication connection with the network device 20 through a Global System for Mobile Communications (GSM), general Packet Radio Service (GPRS), code Division Multiple Access (CDMA), wideband Code Division Multiple Access (WCDMA), time Division Multiple Access (TD-SCDMA), long Term Evolution (LTE), fifth Generation Mobile communication technology (5 th Generation Mobile network, 5G), wireless Local Area network (ev), wireless Fidelity (WLAN), and Wi-Fi) network.

The terminal device 10 may be a portable terminal device, such as a smart phone, a tablet computer, a wearable terminal device (e.g., a smart watch) with a wireless communication function, and the like; the terminal device 10 may also be a non-portable terminal device such as a car computer, a desktop computer, or the like.

The network device 20 may refer to a device that provides a wireless communication function for the terminal device 10. The Network device 20 may be a next generation Base Station (gnnodeb, gNB), an evolved Node B (evolved Node B, eNB), a Node B (Node B, eNB), a Radio Network Controller (Radio Network Controller, RNC), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a Base Band Unit (BBU), a transmission Point (TRP), a Transmission Point (TP), a mobile switching center (msc), etc. in 5G, which is not limited herein.

For convenience of describing the embodiments of the present application, the following explains concepts (e.g., time window, N transmissions in the time window, DMRSs of PUSCH) related to the embodiments of the present application.

(1) Time window

The time window refers to a time period having a time domain length. Optionally, the terminal device may configure the time window according to a signaling sent by the network device. For example, the time window may be configured by DCI, and as shown in fig. 2, in the region 201 in fig. 2, the relevant configuration of the time window may be added in the option field in the DCI. As another example, the time window is configured by RRC. Optionally, the time window may also be determined by time domain information within the time window. For example, the time window is determined based on the number of PUSCH transmissions, N. For another example, the time window is determined based on the total number of time slots K, which is a positive integer. Wherein, the time window indicates that the DMRS of a plurality of PUSCHs or a plurality of PUSCHs in the range indicated by the time window can be jointly used for channel estimation.

(2) N PUSCH transmissions within a time window

The N PUSCH transmissions within a time window means that the terminal device may transmit the PUSCH N times within the time window. There may be multiple cases of N transmissions of PUSCH. In the first case, N transmissions of the PUSCH are N repeated transmissions, that is, the uplink data in the N PUSCHs are the same or the N PUSCH transmissions are the same transport block. Specifically, the method can be divided into a retransmission type a and a retransmission type B. In the second case, part of PUSCHs in N transmissions are repeated transmissions, for example, uplink data in the PUSCHs from 1 st to L th transmissions are the same and are one repeated transmission, uplink data in the PUSCHs from L +1 th to N th transmissions are the same and are another repeated transmission, and 1-L < -N-1 > and L are integers. For another example, the uplink data in the PUSCH transmitted in the odd number of the N transmissions is the same and is one repeated transmission, and the uplink data in the PUSCH transmitted in the even number of the N transmissions is the same and is another repeated transmission. For another example, the uplink data in the PUSCHs transmitted from 1 st to L th times are the same and are transmitted repeatedly, and the uplink data in the PUSCHs transmitted from L +1 st to N th times are different and are transmitted independently. And so on. In the third case, the N transmissions of PUSCH are N independent transmissions, i.e. the N PUSCH transmissions may be completely different TBs or partially different TBs.

Repetition transmission type a: the Repetition transmission Type a (Repetition Type a) is a repeated transmission manner, and the terminal device may transmit the uplink channel once in each of several consecutive time slots, and may transmit the uplink channel multiple times. That is, for transmitting an uplink channel by the repetition transmission type a, one uplink channel is included in one slot, and one uplink channel may occupy one or more symbols.

Repetition transmission type B: the Repetition Type B is another manner of repeating transmission, and the terminal device may transmit one or more uplink channels in one time slot, and the uplink channels are continuous in time.

As an example, when the network device schedules multiple PUSCH repeat transmissions of the same TB through DCI, the time window may start with the first symbol of the PUSCH of the first scheduled transmission and end with the last symbol of the PUSCH of the last scheduled transmission.

As another example, when the network device schedules multiple PUSCH repeated transmissions of the same TB through DCI, the time window may start with the first symbol of the slot in which the PUSCH of the first scheduled transmission is located and end with the last symbol of the slot in which the PUSCH of the last scheduled transmission is located.

As another example, when the network device schedules multiple PUSCH repeat transmissions of the same TB through DCI, the time window may start with the last symbol of the PDCCH carrying the scheduling DCI or immediately follow the first symbol of the PDCCH carrying the scheduling DCI, ending with the last symbol of the PUSCH of the last transmission of the schedule.

As another example, when the network device schedules multiple PUSCH repeated transmissions of the same TB through DCI, the time window may start at a slot where a PDCCH carrying the scheduled DCI is located and end at a slot where a PUSCH of the last transmission of the schedule is located.

In the time window, the parameter sets of at least one PUSCH included in the PUSCHs transmitted for N times are the same, so that the network device can perform joint channel estimation on multiple PUSCHs. The parameter set includes one or more of the following parameters: PUSCH transmission power, frequency domain resource allocation of PUSCH, antenna ports for demodulation reference signals (DMRS antenna ports), transmitted Precoding Matrix Index (TPMI), transmitted spatial parameters (Transmitted spatial parameters), and time Advance (Timing Advance).

(3) DMRS within PUSCH

In order to facilitate the network device to demodulate the uplink data in the PUSCH, the terminal device may also transmit the DMRS while transmitting the uplink data using the PUSCH, that is, the PUSCH may carry the DMRS. Generally, DMRSs in PUSCH may include two major types, a front-loaded DMRS (front-loaded DMRS), and an additional DMRS (additional DMRS).

It should be noted that, in the implementation of the present application, there may be the following cases for the PUSCH carrying the DMRS and the PUSCH not carrying the DMRS: 1) The PUSCH carrying the DMRS refers to that the PUSCH carries a preposed DMRS; correspondingly, the PUSCH without DMRS refers to the PUSCH without the preamble DMRS. 2) The PUSCH carrying the DMRS means that the PUSCH carries an additional DMRS; correspondingly, the PUSCH without DMRS means that no additional DMRS is carried in the PUSCH. 3) The PUSCH carrying the DMRS refers to that the PUSCH carries a preamble DMRS and an additional DMRS; correspondingly, the PUSCH without the DMRS does not carry the preamble DMRS and the additional DMRS. 4) The PUSCH carrying the DMRS refers to that the PUSCH carries a preamble DMRS and an additional DMRS; correspondingly, the PUSCH without DMRS means that no additional DMRS is carried in the PUSCH. The number of the preamble DMRS and the number of the additional DMRS are not limited in the embodiment of the application.

The preamble DMRS in the PUSCH transmitted each time may be configured by RRC issued by the network device. Specifically, the terminal device may acquire, from RRC signaling, a time domain position of each preamble DMRS in the PUSCH and a number of symbols occupied by each preamble DMRS each time. It can also be said that the preamble DMRS in each time slot may be configured by an RRC issued by the network device. Specifically, the terminal device may obtain, from RRC signaling, a time domain position of each pre-DMRS in each slot and a number of symbols occupied by each pre-DMRS.

Wherein, the additional DMRS in the PUSCH for each transmission can be determined by the time domain length of the PUSCH and a higher layer signaling configuration parameter DMRS-additionPosition. Specifically, the terminal device determines the time domain position of each additional DMRS and the number of symbols occupied by each additional DMRS in the PUSCH each time according to the PUSCH time domain length and the DMRS-additional position.

The data transmission method of the embodiment of the present application is described in detail next. Referring to fig. 3, fig. 3 shows a flow chart of a data transmission method, as shown in fig. 3, the data transmission method includes S301 and S302:

s301: acquiring first indication information, wherein the first indication information is used for indicating that M transmissions of a DMRS exist in N transmissions of a PUSCH in a time window; wherein M < N, N, M is a positive integer.

The first indication information is used for indicating that M transmissions of the DMRS exist in N transmissions of the PUSCH in a time window; wherein M < N, N, M is a positive integer. It can also be said that the first indication information may be used to indicate that the transmissions other than the M transmissions in the N transmissions of the PUSCH within the time window do not carry the DMRS (i.e., to indicate that the N-M transmissions in the N transmissions of the PUSCH within the time window do not carry the DMRS). The first indication information has various forms, and the first indication information in various forms will be described in detail below.

In one embodiment, the first indication information is a bitmap that is repeated within the time window such that the bitmap can indicate N transmissions within the time window.

When the number of bits in the time window can be divided by the number of bits in the bitmap, the bitmap can be directly repeated P times in the time window, where P is a positive integer, to obtain a bitmap sequence for indicating N transmissions in the time window. For example, assume the bitmap is 1010, containing 4 bits. Containing 12 bits within the time window, the bitmap can be repeated 3 times resulting in a bitmap sequence 101010101010 containing 12 bits that can indicate N transmissions within the time window.

When the number of bits in the time window cannot be divided by the number of bits of the bitmap, the bitmap sequence can be determined according to the quotient and remainder of the number of bits in the time window divided by the number of bits of the bitmap. For example, assume the bitmap is 1010, containing 4 bits. The time window includes 10 bits, and the quotient obtained by dividing the number of bits in the time window by the number of bits in the bitmap is 2, and the remainder is 2. The resulting sequence 10101010 of the bitmap bit can be repeated 2 times and combined with the first two bits "1" and "0" of the bitmap bit to yield the final bitmap bit sequence 1010101010, which can indicate N transmissions within a time window.

Wherein, each bit in the bitmap sequence can correspond to various meanings of transmission.

Optionally, when the PUSCH transmitted in the time window is the repeated transmission type a, one bit corresponds to one transmission, or each of the N transmissions in the time window corresponds to one bit. Wherein the nth bit in the bitmap sequence may correspond to the nth transmission within the time window. When one bit is a first value, one bit is used to indicate that its corresponding transmission carries the DMRS. And when one bit is a second value, the one bit is used for indicating that the corresponding primary transmission does not carry the DMRS. For example, when one bit is a first value, one bit is used to indicate that its corresponding transmission carries the preamble DMRS. And when one bit is a second value, the one bit is used for indicating that the corresponding primary transmission does not carry the preamble DMRS. For another example, when one bit is a first value, one bit is used to indicate that its corresponding one transmission carries an additional DMRS. And when one bit is a second value, the one bit is used for indicating that the corresponding primary transmission does not carry the additional DMRS. For another example, when one bit is a first value, the one bit is used to indicate that its corresponding one transmission carries the preamble DMRS and the additional DMRS. And when one bit is a second value, the one bit is used for indicating that the corresponding primary transmission does not carry the preamble DMRS and the additional DMRS. For another example, when one bit is a first value, the one bit is used to indicate that its corresponding one transmission carries the preamble DMRS and the additional DMRS. And when one bit is a second value, the one bit is used for indicating that the corresponding primary transmission does not carry the additional DMRS.

A similar scheme may also be applied to the case of PUCCH repetition transmission.

Optionally, when the PUCCH transmitted in the time window performs repeated transmission, one bit corresponds to one transmission, or each transmission in N transmissions in the time window corresponds to one bit. Wherein the nth bit in the bitmap sequence may correspond to the nth PUCCH transmission within the time window. When one bit is a first value, one bit is used to indicate that its corresponding transmission carries the DMRS. And when one bit is a second value, the one bit is used for indicating that the corresponding primary transmission does not carry the DMRS. For example, when one bit is a first value, one bit is used to indicate that its corresponding transmission carries the preamble DMRS. And when one bit is a second value, the one bit is used for indicating that the corresponding primary transmission does not carry the preamble DMRS. For another example, when one bit is a first value, one bit is used to indicate that its corresponding transmission carries the additional DMRS. When one bit is a second value, the one bit is used to indicate that its corresponding one transmission does not carry the additional DMRS. For another example, when one bit is a first value, the one bit is used to indicate that its corresponding one transmission carries the preamble DMRS and the additional DMRS. And when one bit is a second value, the one bit is used for indicating that the corresponding primary transmission does not carry the preamble DMRS and the additional DMRS. For another example, when one bit is a first value, the one bit is used to indicate that its corresponding transmission carries the preamble DMRS and the additional DMRS. And when one bit is a second value, the one bit is used for indicating that the corresponding primary transmission does not carry the additional DMRS.

Optionally, when the PUSCH transmitted in the time window is transmission type B, one bit may correspond to one actual (actual) transmission, or it can be said that each actual transmission in N transmissions in the time window corresponds to one bit. Wherein the nth bit in the bitmap sequence may correspond to the nth actual transmission within the time window. N may be equal to the total number of actual transmissions within the time window. When one bit is a first value, one bit is used to indicate that its corresponding one actual transmission carries the DMRS. And when one bit is a second value, the one bit is used for indicating that the corresponding one-time actual transmission does not carry the DMRS. For example, when one bit is a first value, one bit is used to indicate that its corresponding one actual transmission carries the preamble DMRS. And when one bit is a second value, the one bit is used for indicating that the corresponding primary actual transmission does not carry the preamble DMRS. For another example, when one bit is the first value, one bit is used to indicate that its corresponding one actual transmission carries the additional DMRS. When one bit is a second value, the one bit is used to indicate that its corresponding one actual transmission does not carry the additional DMRS. For another example, when one bit is a first value, the one bit is used to indicate that its corresponding one actual transmission carries the preamble DMRS and the additional DMRS. And when one bit is a second value, the one bit is used for indicating that the corresponding one-time actual transmission does not carry the preamble DMRS and the additional DMRS. For another example, when one bit is a first value, the one bit is used to indicate that its corresponding one actual transmission carries the preamble DMRS and the additional DMRS. And when one bit is a second value, the one bit is used for indicating that the corresponding one actual transmission does not carry the additional DMRS.

Alternatively, one bit may correspond to one nominal transmission, or each nominal transmission of N transmissions within the time window may be said to correspond to one bit. When one bit is a first value, one bit is used to indicate that all actual transmissions corresponding to the one nominal transmission carry the DMRS. And when one bit is a second value, the one bit is used for indicating that the corresponding one-time nominal transmission does not carry the DMRS. For example, when one bit is a first value, one bit is used to indicate that all actual transmissions corresponding to one nominal transmission carry the preamble DMRS. And when one bit is a second value, one bit is used for indicating that all corresponding actual transmissions in the primary nominal transmission corresponding to the bit do not carry the preamble DMRS. For another example, when one bit is a first value, one bit is used to indicate that all actual transmissions corresponding to its corresponding one of the nominal transmissions carry the additional DMRS. When one bit is a second value, one bit is used to indicate that all actual transmissions corresponding to its corresponding one of the nominal transmissions do not carry the additional DMRS. For another example, when one bit is the first value, one bit is used to indicate that all actual transmissions corresponding to one nominal transmission carry the preamble DMRS and the additional DMRS. And when one bit is a second value, the one bit is used for indicating that all corresponding actual transmissions in the corresponding nominal transmission do not carry the preamble DMRS and the additional DMRS. For another example, when one bit is the first value, one bit is used to indicate that all actual transmissions corresponding to one nominal transmission carry the preamble DMRS and the additional DMRS. When one bit is a second value, one bit is used to indicate that all actual transmissions corresponding to its corresponding one of the nominal transmissions do not carry the additional DMRS.

Alternatively, one bit may correspond to each transmission in one time slot, or each time slot in N transmissions in the time window may correspond to one bit. Wherein the nth bit in the bitmap sequence may correspond to the nth time slot within the time window. And when one bit is a first value, the one bit is used for indicating that all uplink transmissions in the corresponding one time slot carry the DMRS. And when one bit is a second value, the one bit is used for indicating that all uplink transmissions in the corresponding one time slot do not carry the DMRS. For example, when one bit is a first value, one bit is used to indicate that all uplink transmissions in one corresponding slot carry the preamble DMRS. And when one bit is a second value, one bit is used for indicating that all uplink transmissions in one corresponding time slot do not carry the pre-DMRS. For another example, when one bit is the first value, the one bit is used to indicate that all uplink transmissions in the corresponding one slot carry the additional DMRS. And when one bit is a second value, the one bit is used for indicating that all uplink transmissions in the corresponding one time slot do not carry the additional DMRS. For another example, when one bit is a first value, the one bit is used to indicate that all uplink transmissions in the corresponding one time slot carry the preamble DMRS and the additional DMRS. And when one bit is a second value, the one bit is used for indicating that all uplink transmissions in the corresponding one time slot do not carry the pre-DMRS and the additional DMRS. For another example, when one bit is a first value, the one bit is used to indicate that all uplink transmissions in the corresponding one time slot carry the preamble DMRS and the additional DMRS. And when one bit is a second value, the one bit is used for indicating that all uplink transmissions in the corresponding time slot do not carry the additional DMRS. The uplink transmission may be a PUSCH, a PUCCH, or a PUSCH and a PUCCH.

Wherein the first value and the second value mentioned above refer to different bit values, for example, the first value is "1", and the second value is "0"; alternatively, the first value is "0" and the second value is "1".

It should be noted that the bitmap mentioned above may be predefined, or may be configured by RRC.

In another embodiment, the bitmap sequence may also be configured by DCI. Specifically, the network device may add a field in the DCI, and the terminal device may obtain the bitmap from the DCI. As an example, a table may be predefined, and each row index number of the table corresponds to a bitmap. The specifically adopted bitmap may be indicated in the DCI by indicating a row index number.

In another embodiment, the bitmap may also be configured by DCI. Specifically, the network device may add a field in the DCI, and the terminal device may obtain the bitmap from the DCI. As an example, the RRC may configure a set of bit maps and then indicate the specifically employed bit map through the DCI.

In another embodiment, the bitmap may be configured while the higher layer signaling configures the mapping type, starting symbol and/or length information and the number of repeated transmissions for the PUSCH. Optionally, all the configuration information may belong to the same PUSCH-Allocation high-level configuration, and it may be determined by DCI which PUSCH-Allocation configuration is specifically adopted. From the bitmap shown in fig. 2, the terminal device can obtain the bitmap in the BITSTRING in the dmrsense field.

In another embodiment, in addition to indicating DMRS-carrying transmission and DMRS-not-carrying transmission in N transmissions within a time window by using an explicit bitmap, the terminal device may also indicate DMRS-carrying transmission and DMRS-not-carrying transmission in N transmissions within a time window by using implicit first indication information. The index of the DMRS pattern in N transmissions may be in one-to-one correspondence with the time length or index number of the time window, and once the time window is determined, the DMRS pattern corresponding to the time window is also uniquely determined. The DMRS pattern is used to indicate transmission carrying a DMRS and transmission not carrying a DMRS among N transmissions.

Optionally, the DMRS pattern is determined by a predefined constant, that is, the first indication information indicates a predefined constant corresponding to the time window, and when the predefined constant is determined, the DMRS pattern of the time window is also uniquely determined. The first indication information may be carried by RRC, DCI, or predefined.

In one embodiment, which of the N transmissions within the time window carry the DMRS depends on the constant. For example, the transmission with the remainder equal to zero for the constant for the corresponding number of N transmissions carries the DMRS. Specifically, when the i-th time of the N transmissions has a remainder equal to zero, that is, an i mod constant =0, the i-th transmission carries the DMRS, where 0< -i is less than or equal to N, and i is a positive integer. And when the ith residue on the constant in the N transmissions is not equal to zero, namely the i mod constant is not equal to 0, carrying no DMRS in the ith transmission. Referring to fig. 4, fig. 4 schematically illustrates a data transmission. In fig. 4, a time window is represented by a rectangular box, a PUSCH transmission within the time window is represented by a square box, and N transmissions may be included within a time window. In order to distinguish between PUSCH carrying DMRS and PUSCH not carrying DMRS, PUSCH transmission not carrying DMRS may be represented by white square boxes and PUSCH transmission carrying DMRS may be represented by black square boxes. When the predefined constant is 2, the terminal device may not carry the DMRS in odd-numbered transmissions and carry the DMRS in even-numbered transmissions, as shown in fig. 4.

In another embodiment, whether the slot corresponding to the index in N transmissions in the time window carries the DMRS is related to the constant, that is, the uplink transmission on the slot with the remainder of the index of the corresponding slot to the constant being equal to zero in the N transmissions carries the DMRS. Specifically, when the remainder of the index number of the time slot corresponding to the ith time in the N times of transmission to the constant is equal to zero, the uplink transmission on the time slot in the N times of transmission carries the DMRS. And when the remainder of the index number of the time slot corresponding to the ith time in the N times of transmission to the constant is not equal to zero, the uplink transmission on the time slot in the N times of transmission does not carry the DMRS.

Wherein, the transmission in one time slot may include one or more of the following: PUSCH in repeated transmission type a, actually transmitted PUSCH in repeated transmission type B, nominal PUSCH transmission in repeated transmission type B, PUSCH belonging to different transport blocks, and PUSCH belonging to different transport blocks in part.

Optionally, the DMRS pattern is determined by time domain information of a time window, that is, the first indication information indicates the number of times N of transmission in the time window corresponding to the time window or the first indication information indicates the total number K of time slots in the time window corresponding to the time window.

When the first indication information indicates that the time window corresponds to the number N of transmission times in the time window, the DMRS patterns correspond to the number range where the number N of transmission times in the time window is located in one-to-one correspondence. Specifically, the terminal device may obtain the number N of transmissions in the time window, determine a number range in which the number N is located, and search for the DMRS pattern corresponding to the time window based on a correspondence between the number range and the DMRS pattern. The DMRS pattern is used to indicate DMRS-carrying transmission and DMRS-non-carrying transmission in N transmissions.

And when the first indication information indicates that the time window corresponds to the total number K of the time slots in the time window, the DMRS patterns correspond to the number range in which the total number K of the time slots in the time window is located one by one. Specifically, the terminal device may obtain the total number K of the time slots in the time window, determine a number range in which the total number K of the time slots is located, and find the DMRS pattern corresponding to the time window based on the correspondence between the number range and the DMRS pattern. The DMRS pattern is used to indicate that transmissions within a slot carry DMRS and do not carry DMRS.

Wherein the range of amounts may include one or more of the following: discrete numbers and continuous intervals. For example, when the range of numbers is a discrete number, the range of numbers may be {3}, {2,4}, and so on. As another example, when the number range is a continuous interval, the number range may be (5, 8), (5, 8, [5,8], etc.

One range of numbers corresponds to one DMRS pattern. As shown in fig. 5, several number ranges and their corresponding DMRS patterns are exemplarily shown in fig. 5. In fig. 5, the number range 1 is {3}, corresponding to DMRS pattern 1; the number range 2 is {2,4}, corresponding to DMRS pattern 2; number range 3 is [5,8], corresponding to DMRS pattern 3; the number range 4 is [9, 10] and (10, 12), corresponding to DMRS pattern 4.

S302: and transmitting the PUSCH according to the first indication information, wherein M transmissions in the N transmissions of the PUSCH all carry the DMRS.

Specifically, the terminal device may transmit the PUSCH for N times according to the first indication information, where M times of transmission in the N times of transmission of the PUSCH all carry the DMRS, and N-M times of transmission in the N times of transmission do not carry the DMRS. Therefore, the network equipment can receive the PUSCH for N times in the time window, perform joint channel estimation and improve the covering performance of the PUSCH.

In this embodiment, the terminal device may obtain the first indication information, and transmit the PUSCH for N times within the time window according to the first indication information. Since the first indication information indicates that there are M transmissions of the DMRS in the N transmissions of the PUSCH within the time window, when the terminal device transmits the PUSCH N times, the DMRS is carried in the M transmissions of the N transmissions of the PUSCH. Whether the PUSCH in the time window carries the DMRS can be indicated through the first indication information, so that the terminal equipment can reduce the PUSCH carrying the DMRS according to the first indication information, further more time-frequency resources can be utilized to transmit uplink data, the coding rate is improved, and the uplink coverage is improved.

As can be seen from the above description of the method embodiment shown in fig. 3, the data transmission method shown in fig. 3 may indicate, by using the first indication information, M PUSCHs carrying DMRS among N PUSCHs within a time window. In another embodiment, the second indication information may also be used to indicate M PUSCHs that do not carry the DMRS among N PUSCHs within the time window. Based on this, an embodiment of the present application further provides another data transmission method, and as shown in fig. 6, the data transmission method may include the following steps S601 to S602:

s601: and acquiring second indication information, wherein the second indication information is used for indicating that M transmissions of the DMRS do not exist in N transmissions of the PUSCH in a time window.

And the second indication information is used for indicating that M transmissions of the DMRS do not exist in N transmissions of the PUSCH in the time window. It can also be said that the second indication information may be used to indicate that M of the N transmissions of the PUSCH within the time window do not carry the DMRS, and that the transmissions other than the M of the N transmissions of the PUSCH within the time window carry the DMRS (i.e., to indicate that N-M of the N transmissions of the PUSCH within the time window carry the DMRS).

The second indication information has various forms similar to the first indication information, and the second indication information in various forms will be described in detail below.

In one embodiment, the second indication information is a bitmap that repeats over the time window such that the bitmap can indicate N transmissions within the time window.

The terminal device may generate the bitmap sequence according to the bitmap, and the specific implementation may refer to the specific description of the relevant embodiment in fig. 3, which is not described herein again.

Similar to the foregoing, there may be a plurality of meanings that each bit in the bitmap sequence may correspond to a transmission. Optionally, the transmission indicated by one bit in the bitmap sequence may be related to a repeated transmission type of PUSCH transmitted within the time window. The repetition transmission type of the PUSCH may be either repetition transmission type a or repetition transmission type B. Alternatively, each bit in the bitmap sequence may correspond to an uplink transmission in a time window or an uplink transmission in an uplink timeslot. The uplink transmission may include a PUSCH and/or a PUCCH.

Optionally, when the PUSCH transmitted in the time window is the repetitive transmission type a, one bit corresponds to one transmission, or it can be said that each transmission in N transmissions in the time window corresponds to one bit. Wherein the nth bit in the sequence of bit maps may correspond to the nth transmission within the time window. When one bit is a first value, the one bit is used to indicate that its corresponding transmission does not carry the DMRS. And when one bit is a second value, the one bit is used for indicating that the corresponding transmission carries the DMRS. For example, when one bit is a first value, one bit is used to indicate that its corresponding primary transmission does not carry the preamble DMRS. And when one bit is a second value, the one bit is used for indicating that the corresponding primary transmission carries the preamble DMRS. For another example, when one bit is a first value, the one bit is used to indicate that its corresponding transmission does not carry the additional DMRS. And when one bit is a second value, the one bit is used for indicating that the corresponding transmission carries the additional DMRS. For another example, when one bit is a first value, the one bit is used to indicate that its corresponding primary transmission does not carry the preamble DMRS and the additional DMRS. And when one bit is a second value, the one bit is used for indicating that the corresponding transmission carries the preamble DMRS and the additional DMRS. For another example, when one bit is the first value, one bit is used to indicate that its corresponding transmission does not carry the additional DMRS. And when one bit is a second value, the one bit is used for indicating that the corresponding transmission carries the preamble DMRS and the additional DMRS.

Optionally, when the PUCCH transmitted in the time window performs repeated transmission, one bit corresponds to one transmission, or each of the N transmissions in the time window corresponds to one bit. Wherein the nth bit in the bitmap sequence may correspond to the nth PUCCH transmission within the time window. When one bit is a first value, the one bit is used to indicate that its corresponding transmission does not carry the DMRS. And when one bit is a second value, the one bit is used for indicating that the corresponding transmission carries the DMRS. For example, when one bit is a first value, one bit is used to indicate that its corresponding primary transmission does not carry the preamble DMRS. And when one bit is a second value, the one bit is used for indicating that the corresponding transmission carries the preamble DMRS. For another example, when one bit is a first value, one bit is used to indicate that its corresponding transmission does not carry the additional DMRS. And when one bit is a second value, the one bit is used for indicating that the corresponding transmission carries the additional DMRS. For another example, when one bit is a first value, the one bit is used to indicate that its corresponding primary transmission does not carry the preamble DMRS and the additional DMRS. And when one bit is a second value, the one bit is used for indicating that the corresponding transmission carries the preamble DMRS and the additional DMRS. For another example, when one bit is a first value, the one bit is used to indicate that its corresponding transmission does not carry the additional DMRS. And when one bit is a second value, the one bit is used for indicating that the corresponding primary transmission carries the preamble DMRS and the additional DMRS.

Optionally, when the PUSCH transmitted in the time window is the repeated transmission type B, one bit may correspond to one actual transmission, or each actual transmission in the N transmissions in the time window may correspond to one bit. Wherein the nth bit in the sequence of bit maps may correspond to the nth actual transmission within the time window. N may be equal to the total number of actual transmissions within the time window. And when one bit is a first value, the one bit is used for indicating that the corresponding one-time actual transmission does not carry the DMRS. And when one bit is a second value, the one bit is used for indicating that the corresponding one actual transmission carries the DMRS. For example, when one bit is a first value, the one bit is used to indicate that its corresponding one actual transmission does not carry the preamble DMRS. And when one bit is a second value, the one bit is used for indicating that the corresponding one actual transmission carries the preamble DMRS. For another example, when one bit is the first value, one bit is used to indicate that its corresponding one actual transmission does not carry the additional DMRS. And when one bit is a second value, the one bit is used for indicating that the corresponding one actual transmission carries the additional DMRS. For another example, when one bit is the first value, one bit is used to indicate that its corresponding one actual transmission does not carry the preamble DMRS and the additional DMRS. And when one bit is a second value, the one bit is used for indicating that the corresponding one actual transmission carries the preamble DMRS and the additional DMRS. For another example, when one bit is the first value, one bit is used to indicate that its corresponding one actual transmission does not carry the additional DMRS. And when one bit is a second value, the one bit is used for indicating that the corresponding one actual transmission carries the preamble DMRS and the additional DMRS.

Alternatively, one bit may correspond to one nominal transmission, or each nominal transmission of N transmissions in the time window may correspond to one bit. When one bit is a first value, one bit is used to indicate that all actual transmissions corresponding to one nominal transmission do not carry the DMRS. And when one bit is a second value, the one bit is used for indicating that all corresponding actual transmissions in the corresponding nominal transmission carry the DMRS. For example, when one bit is a first value, one bit is used to indicate that all actual transmissions corresponding to one nominal transmission do not carry the preamble DMRS. And when one bit is a second value, one bit is used for indicating that all corresponding actual transmissions in the primary nominal transmission corresponding to the bit carry the preamble DMRS. For another example, when one bit is a first value, one bit is used to indicate that all actual transmissions corresponding to its corresponding one of the nominal transmissions do not carry the additional DMRS. And when one bit is a second value, the one bit is used for indicating that all corresponding actual transmissions in the corresponding one-time nominal transmission carry the additional DMRS. For another example, when one bit is the first value, one bit is used to indicate that all actual transmissions corresponding to one nominal transmission do not carry the preamble DMRS and the additional DMRS. And when one bit is a second value, the one bit is used for indicating that all corresponding actual transmissions in the primary nominal transmission corresponding to the bit carry the preamble DMRS and the additional DMRS. For another example, when one bit is the first value, one bit is used to indicate that all actual transmissions corresponding to one nominal transmission do not carry the additional DMRS. And when one bit is a second value, the one bit is used for indicating that all corresponding actual transmissions in the primary nominal transmission corresponding to the bit carry the preamble DMRS and the additional DMRS.

Alternatively, one bit may correspond to transmission in one time slot, or each time slot of N transmissions in the time window may correspond to one bit. Wherein the nth bit in the bitmap sequence may correspond to the nth time slot within the time window. And when one bit is a first value, the one bit is used for indicating that all uplink transmissions in the corresponding one time slot do not carry the DMRS. And when one bit is the second value, one bit is used for indicating that all uplink transmissions in one corresponding time slot carry the DMRS. For example, when one bit is a first value, one bit is used to indicate that all uplink transmissions in its corresponding one slot do not carry the preamble DMRS. And when one bit is a second value, the one bit is used for indicating that all uplink transmissions in one corresponding time slot carry the preamble DMRS. For another example, when one bit is the first value, the one bit is used to indicate that all uplink transmissions in the corresponding one slot do not carry the additional DMRS. And when one bit is a second value, the one bit is used for indicating that all uplink transmissions in the corresponding one time slot carry the additional DMRS. For another example, when one bit is the first value, the one bit is used to indicate that all uplink transmissions in the corresponding one time slot do not carry the preamble DMRS and the additional DMRS. And when one bit is a second value, the one bit is used for indicating that all uplink transmissions in one corresponding time slot carry the preamble DMRS and the additional DMRS. For another example, when one bit is the first value, the one bit is used to indicate that all uplink transmissions in the corresponding one time slot do not carry the additional DMRS. And when one bit is a second value, the one bit is used for indicating that all uplink transmissions in the corresponding one time slot carry the preamble DMRS and the additional DMRS.

In another embodiment, similar to the embodiment shown in fig. 3, the bitmap may also be configured by DCI. Specifically, the network device may add a field in the DCI, and the terminal device may obtain the bitmap from the DCI. As an example, a table may be predefined, and each row index number of the table corresponds to a bitmap. The specific adopted bitmap can be indicated by indicating the row index number in the DCI.

In another embodiment, the bitmap may also be configured by DCI. Specifically, the network device may add a field in the DCI, and the terminal device may obtain the bitmap from the DCI. As an example, the RRC may configure a set of bitmaps and then indicate the specifically employed bitmaps through the DCI.

In another embodiment, the bitmap sequence may be configured while the higher layer signaling configures the mapping type, starting symbol and/or length information and the number of repeated transmissions for the PUSCH. Optionally, all the configuration information may belong to the same PUSCH-Allocation high-level configuration, and it may be determined by DCI which PUSCH-Allocation configuration is specifically adopted.

In another embodiment, in addition to indicating DMRS-carrying transmission and DMRS-not-carrying transmission in N transmissions within a time window by using an explicit bitmap, the terminal device may also indicate DMRS-carrying transmission and DMRS-not-carrying transmission in N transmissions within a time window by using implicit second indication information. The index of the DMRS pattern in N transmissions may be in one-to-one correspondence with the time length or index number of the time window, and once the time window is determined, the DMRS pattern corresponding to the time window is also uniquely determined. The DMRS pattern is used to indicate DMRS-carrying transmission and DMRS-not-carrying transmission in N transmissions.

Optionally, the DMRS pattern is determined by a predefined constant, that is, the second indication information indicates a predefined constant corresponding to the time window, and when the predefined constant is determined, the DMRS pattern of the time window is also uniquely determined. The second indication information may be carried by RRC, or DCI, or predefined.

In one embodiment, which of the N transmissions within the time window do not carry the DMRS is related to the constant. For example, transmissions of N transmissions that have a corresponding number of times that is equal to zero with a remainder to the constant do not carry DMRS. Specifically, when the i-th of the N transmissions is left with the constant equal to zero, i.e., i mod constant =0, the i-th transmission does not carry the DMRS. And when the ith residue on the constant in the N transmissions is not equal to zero, namely i mod constant is not equal to 0, carrying the DMRS in the ith transmission.

In another embodiment, which slots of the N transmissions within the time window do not carry DMRS is related to the constant. For example, a slot with a constant remainder equal to zero for the corresponding slot index in N transmissions does not carry a DMRS. Specifically, when the remainder of the slot index corresponding to the ith time in the N transmissions to the constant is equal to zero, the uplink transmission on the slot in the N transmissions does not carry the DMRS. And when the remainder of the time slot index corresponding to the ith time in the N times of transmission on the constant is not equal to zero, carrying the DMRS by the uplink transmission on the time slot in the N times of transmission.

Wherein, the transmission in one time slot may include one or more of the following: PUSCH in repetition transmission type a, actual transmission PUSCH in repetition transmission type B, nominal PUSCH transmission in repetition transmission type B, PUSCH belonging to different transport blocks and PUSCH belonging to different transport blocks in part.

Optionally, the DMRS pattern is determined by time domain information of the time window, that is, the second indication information indicates the number of times N of transmission in the time window corresponding to the time window or the total number K of time slots in the time window corresponding to the second indication information.

And when the second indication information indicates that the time window corresponds to the number N of times of transmission in the time window, the DMRS patterns correspond to the number range of the number N of times of transmission in the time window in a one-to-one correspondence manner. Specifically, the terminal device may obtain the number N of transmissions within the time window, determine a number range in which the number N is located, and find the DMRS pattern corresponding to the time window based on a correspondence between the number range and the DMRS pattern. The DMRS pattern is used to indicate DMRS-carrying transmission and DMRS-not-carrying transmission in N transmissions.

And when the second indication information indicates that the time window corresponds to the total number K of the time slots in the time window, the DMRS patterns correspond to the number ranges of the total number K of the time slots in the time window in a one-to-one correspondence mode. Specifically, the terminal device may obtain the total number K of the time slots in the time window, determine a number range in which the total number K of the time slots is located, and find the DMRS pattern corresponding to the time window based on a correspondence between the number range and the DMRS pattern. The DMRS pattern is used to indicate that transmissions within a slot carry DMRSs and do not carry DMRSs.

For detailed description of the DMRS pattern, reference may be made to specific explanations of the embodiment in fig. 3, and details are not described here.

S602: and transmitting the PUSCH according to the second indication information, wherein M transmissions in the N transmissions of the PUSCH do not carry the DMRS.

Specifically, the terminal device may transmit the PUSCH for N times according to the second indication information, where M times of transmission in the N times of transmission of the PUSCH do not carry the DMRS, and N-M times of transmission in the N times of transmission carry the DMRS. Therefore, the network equipment can receive the PUSCH for N times in the time window, perform joint channel estimation and improve the covering performance of the PUSCH.

In this embodiment, the terminal device may obtain the second indication information, and transmit the PUSCH for N times within the time window according to the second indication information. Since the second indication information indicates that there are no M transmissions of the DMRS in the N transmissions of the PUSCH within the time window, when the terminal device transmits the PUSCH N times, the M transmissions of the N transmissions of the PUSCH do not carry the DMRS. Whether the PUSCH in the time window carries the DMRS can be indicated through the second indication information, so that the terminal equipment can reduce the PUSCH carrying the DMRS according to the second indication information, further more time-frequency resources can be utilized to transmit uplink data, the coding rate is improved, and the uplink coverage is improved.

Referring to fig. 7, fig. 7 is a schematic structural diagram of a data transmission device according to an embodiment of the present application. The device may be a terminal device, or a device in the terminal device, or a device capable of being used in cooperation with the terminal device. The data transmission apparatus shown in fig. 7 may include an acquisition unit 701 and a transmission unit 702. Wherein:

the obtaining unit 701 is configured to obtain first indication information, where the first indication information is used to indicate that M transmissions of a DMRS exist in N transmissions of a PUSCH in a time window; wherein M < N, N, M is a positive integer;

the transmission unit 702 is configured to transmit a PUSCH according to the first indication information, where M transmissions in N transmissions of the PUSCH all carry the DMRS.

In some possible embodiments, transmissions other than M transmissions of the N transmissions of the PUSCH do not carry DMRS.

In some possible embodiments, the time window is configured by DCI or by RRC.

In some possible embodiments, the time window is determined based on the number of PUSCH transmissions, N.

In some possible embodiments, when N transmissions of PUSCH transmit the same transport block, the starting position of the time window is the first symbol of PUSCH transmitted for the first time, and the ending position of the time window is the last symbol of PUSCH transmitted for the nth time.

In some possible embodiments, the first indication information is a bitmap, and the bitmap is repeated in the time window, so that each of the N transmissions corresponds to a bit; and when one bit is a first value, the bit is used for indicating that the corresponding transmission carries the DMRS.

In some possible embodiments, the first indication information is a bitmap; the bit map is repeated in a time window, so that each actual transmission in the N transmissions respectively corresponds to one bit; when one bit is a first value, the bit is used for indicating that the corresponding one-time actual transmission carries the DMRS; alternatively, the first and second liquid crystal display panels may be,

the bit map is repeated in the time window, so that each nominal transmission in the N transmissions corresponds to one bit; when one bit is a first value, the bit is used for indicating that the corresponding one-time nominal transmission carries the DMRS; alternatively, the first and second electrodes may be,

the bit map is repeated in a time window, so that each time slot in N times of transmission corresponds to a bit; and when one bit is a first value, the bit is used for indicating that the DMRS is transmitted and carried in the corresponding time slot.

In some possible embodiments, the first indication information is configured by DCI or configured by RRC.

In some possible embodiments, the index of the DMRS pattern in N transmissions corresponds to the index of the time window one to one, and is predefined;

In some possible embodiments, if the first indication information indicates that the time window corresponds to a predefined constant, the DMRS is carried by the transmission with a corresponding number of times that a remainder of the constant is equal to zero in the N transmissions, or the DMRS is carried by the slot with a corresponding index that a remainder of the constant is equal to zero in the N transmissions.

In some possible embodiments, the first indication information indicates the number N of transmissions within a time window, and the DMRS patterns correspond to the number range in which the number N of transmissions within the time window is located in a one-to-one manner; alternatively, the first and second electrodes may be,

In some possible embodiments, the N transmissions of the PUSCH include one or more of a repeated transmission and an independent transmission.

In some possible embodiments, the DMRS includes one or more of a preamble DMRS and an additional DMRS.

The data transmission device may be, for example: a chip, or a chip module. Each unit included in each apparatus and product described in the above embodiments may be a software unit, a hardware unit, or a part of the software unit and a part of the hardware unit. For example, for each device or product applied to or integrated into a chip, each unit included in the device or product may be implemented by hardware such as a circuit, or at least a part of the units may be implemented by a software program running on a processor integrated within the chip, and the rest (if any) part of the units may be implemented by hardware such as a circuit; for each device and product applied to or integrated in the chip module, each unit included in the device and product may be implemented in a hardware manner such as a circuit, and different units may be located in the same component (e.g., a chip, a circuit unit, etc.) or different components of the chip module, or at least part of the units may be implemented in a software program running on a processor integrated in the chip module, and the rest (if any) part of the units may be implemented in a hardware manner such as a circuit; for each device and product applied to or integrated in the terminal device, each unit included in the device and product may be implemented by using hardware such as a circuit, different units may be located in the same component (e.g., a chip, a circuit unit, etc.) or different components in the terminal device, or at least some units may be implemented by using a software program running on a processor integrated in the terminal device, and the remaining (if any) some units may be implemented by using hardware such as a circuit.

The relevant content of this embodiment can be referred to the relevant content of the above method embodiment. And will not be described in detail herein. The embodiments of the present application and the embodiments of the method described above are based on the same concept, and the technical effects brought by the embodiments are also the same.

Please refer to fig. 8, and fig. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present application. The terminal device includes: the processor 801, the memory 802, the processor 801 and the memory 802 are connected by one or more communication buses 803.

The Processor 801 may be a Central Processing Unit (CPU), and may be other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The processor 801 is configured to support the terminal device to perform the corresponding functions of the terminal device in the method described in fig. 3 or fig. 6.

The memory 802 may include read-only memory and random access memory, and provides computer programs and data to the processor 801. A portion of the memory 802 may also include non-volatile random access memory. Wherein, the processor 801 is used for executing, when calling the computer program:

In some possible embodiments, the time window is configured by DCI or by RRC.

In some possible embodiments, the first indication information is a bitmap;

the bit bitmap is repeated in a time window, so that each actual transmission in the N transmissions corresponds to one bit; when one bit is a first value, the bit is used for indicating that the corresponding one-time actual transmission carries the DMRS; alternatively, the first and second electrodes may be,

the bit map is repeated in the time window, so that each time slot in N times of transmission corresponds to one bit respectively; and when one bit is a first value, the bit is used for indicating that the DMRS is transmitted and carried in the corresponding time slot.

In some possible embodiments, the indexes of the DMRS patterns in N transmissions correspond to the indexes of the time windows one to one and are predefined;

In some of the possible embodiments of the present invention,

and if the first indication information indicates that the time window corresponds to a predefined constant, the DMRS is carried in the transmission with the remainder of the constant equal to zero corresponding to the times in the N transmissions, or the DMRS is carried in the time slot with the remainder of the constant equal to zero corresponding to the index in the N transmissions.

In some possible embodiments, the first indication information indicates the number N of transmissions within a time window, and the DMRS patterns correspond to the number range in which the number N of transmissions within the time window is located in a one-to-one manner; alternatively, the first and second liquid crystal display panels may be,

the first indication information indicates the total number K of the time slots in the time window, and the DMRS patterns correspond to the number range where the total number K of the time slots in the time window is located.

The relevant contents of this embodiment can be referred to the relevant contents of the above method embodiments. And will not be described in detail herein. The embodiments of the present application and the embodiments of the method described above are based on the same concept, and the technical effects brought by the embodiments are also the same.

The embodiment of the present application provides a chip, where the chip may perform relevant steps of the terminal device in the foregoing method embodiments. The chip is used for: acquiring first indication information, wherein the first indication information is used for indicating M transmissions of a DMRS in N transmissions of a PUSCH in a time window; wherein M < N, N, M is a positive integer; and transmitting the PUSCH according to the first indication information, wherein M transmissions in the N transmissions of the PUSCH all carry the DMRS.

In some possible embodiments, the time window is configured by DCI or by RRC.

In some possible embodiments, when the N transmissions of the PUSCH transmit the same transport block, the starting position of the time window is the first symbol of the PUSCH of the first transmission and the ending position of the time window is the last symbol of the PUSCH of the nth transmission.

In some possible embodiments, the first indication information is a bitmap, and the bitmap is repeated in the time window, so that each of the N transmissions corresponds to a bit; and when one bit is a first value, indicating that the corresponding transmission carries the DMRS.

In some possible embodiments, the first indication information is a bitmap;

the bit map is repeated in the time window, so that each nominal transmission in the N transmissions corresponds to one bit; when one bit is a first value, the bit is used for indicating that the corresponding one-time nominal transmission carries the DMRS; alternatively, the first and second liquid crystal display panels may be,

In some of the possible embodiments of the present invention,

The embodiment of the application provides a module equipment, and module equipment includes treater and communication interface, and the treater links to each other with communication interface, and communication interface is used for receiving and dispatching signals, and the treater is used for:

acquiring first indication information, wherein the first indication information is used for indicating M transmissions of a DMRS in N transmissions of a PUSCH in a time window; wherein M < N, N, M is a positive integer; and transmitting the PUSCH according to the first indication information, wherein M transmissions in the N transmissions of the PUSCH all carry the DMRS.

In some possible embodiments, transmissions other than M transmissions of N transmissions of PUSCH do not carry DMRS.

In some possible embodiments, the time window is configured by DCI or by RRC.

In some possible embodiments, the first indication information is a bitmap;

the bit bitmap is repeated in a time window, so that each actual transmission in the N transmissions corresponds to one bit; when one bit is a first value, the bit is used for indicating that the corresponding one-time actual transmission carries the DMRS; alternatively, the first and second liquid crystal display panels may be,

In some of the possible embodiments of the present invention,

In some possible embodiments, the first indication information indicates the number N of transmissions within a time window, and the DMRS patterns are in one-to-one correspondence with the number range within which the number N of transmissions within the time window is located; alternatively, the first and second electrodes may be,

An embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, the computer program may be used to implement the data transmission method described in the embodiment corresponding to fig. 3 or fig. 6 in the embodiment of the present application, and details of the data transmission method are not described herein again.

The computer readable storage medium may be an internal storage unit of the terminal device of any of the foregoing embodiments, for example, a hard disk or a memory of the device. The computer-readable storage medium may also be an external storage device of the terminal device, such as a plug-in hard disk provided on the device, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like. Further, the computer-readable storage medium may also include both an internal storage unit of the terminal device and an external storage device. The computer-readable storage medium is used for storing computer programs and other programs and data required by the terminal device. The computer-readable storage medium may also be used to temporarily store data that has been output or is to be output.

It will be understood by those skilled in the art that all or part of the processes in the methods of the embodiments described above may be implemented by a computer program, which may be stored in a readable storage medium, and when executed, may include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present application and is not to be construed as limiting the scope of the present application, so that the present application is not limited thereto, and all equivalent variations and modifications can be made to the present application.

Claims

1. A method of data transmission, the method comprising:

acquiring first indication information, wherein the first indication information is used for indicating that M times of transmissions of a demodulation reference signal (DMRS) exist in N times of transmissions of an uplink physical shared channel (PUSCH) in a time window Timedomnwindow; wherein M < N, N, M is a positive integer;

2. The method of claim 1, wherein transmissions of the N transmissions of the PUSCH other than the M transmissions do not carry a DMRS.

3. The method according to claim 1 or 2, wherein the time window is configured by downlink control information, DCI, or by radio resource control, RRC.

4. The method of claim 1 or 2, wherein the time window is determined based on a number N of the PUSCH transmissions.

5. The method of claim 4, wherein when the N transmissions of the PUSCH transmit the same Transport Block, a starting position of the time window is a first symbol of a PUSCH for a first transmission and a ending position of the time window is a last symbol of a PUSCH for an Nth transmission.

6. The method of claim 1 or 2,

the first indication information is a bitmap, and the bitmap is repeated in the time window, so that each transmission in the N transmissions corresponds to one bit; and when one bit is a first value, indicating that the corresponding transmission carries the DMRS.

7. The method according to claim 1 or 2,

the first indication information is a bitmap;

the bitmap is repeated within the time window such that each actual transmission of the N transmissions corresponds to a respective bit; when one bit is a first value, the bit is used for indicating that the corresponding one-time actual transmission carries the DMRS; alternatively, the first and second liquid crystal display panels may be,

the bitmap of bits is repeated within the time window such that each nominal (nominal) transmission of the N transmissions corresponds to a respective one of the bits; when one bit is a first value, the bit is used for indicating that the corresponding one-time nominal transmission carries the DMRS; alternatively, the first and second liquid crystal display panels may be,

the bitmap is repeated in the time window, so that each time slot in the N transmissions corresponds to one bit; and when one bit is a first value, indicating that the transmission in the corresponding one time slot carries the DMRS.

8. The method of claim 1 or 2,

the first indication information is configured by DCI or RRC.

9. The method of claim 1 or 2,

indexes of DMRS patterns in the N transmissions correspond to indexes of time windows one by one and are predefined;

the DMRS pattern is used to indicate transmission carrying DMRS and transmission not carrying DMRS in the N transmissions.

10. The method of claim 9,

if the first indication information indicates that the time window corresponds to a predefined constant, the transmission with the remainder of the corresponding times to the constant being equal to zero in the N transmissions carries the DMRS, or the time slot with the remainder of the corresponding indexes to the constant being equal to zero in the N transmissions carries the DMRS.

11. The method of claim 9,

the first indication information indicates the number N of times of transmission in the time window, and the DMRS patterns correspond to the number range of the number N of times of transmission in the time window in a one-to-one manner; alternatively, the first and second liquid crystal display panels may be,

12. The method of claim 1 or 2, wherein the N transmissions of PUSCH comprise one or more of a repeated transmission and an independent transmission.

13. The method of claim 1 or 2, wherein the DMRS comprises one or more of a preamble DMRS and an additional DMRS.

14. A data transmission apparatus, characterized in that the apparatus comprises:

15. A terminal device comprising a processor and a memory, the processor being coupled to the memory, wherein the memory is configured to store program code and the processor is configured to invoke the program code to perform a data transmission method according to any one of claims 1 to 13.

16. A chip, characterized in that,

the chip is used for acquiring first indication information, and the first indication information is used for indicating that M transmissions of the DMRS exist in N transmissions of the PUSCH in a time window; wherein M < N, N, M is a positive integer;

17. A chip module, wherein the module device comprises a processor and a communication interface, the processor is connected to the communication interface, the communication interface is used for transceiving signals, and the processor is used for:

18. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program which, when executed by a processor, implements the data transmission method of any of the preceding claims 1 to 13.