CN110972277A

CN110972277A - Data transmission method, device and storage medium

Info

Publication number: CN110972277A
Application number: CN201811142463.6A
Authority: CN
Inventors: 李�远
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-09-28
Filing date: 2018-09-28
Publication date: 2020-04-07
Anticipated expiration: 2038-09-28
Also published as: CN110972277B

Abstract

The application provides a data transmission method, a data transmission device and a storage medium. The method comprises the following steps: the terminal equipment receives first information sent by the network equipment and used for informing that a plurality of data transmissions are sent on a plurality of time units, the time units are in one-to-one correspondence with the data transmissions, at least one data transmission included in the plurality of data transmissions does not include a DMRS, the terminal equipment also receives second information used for informing that the first time unit in the plurality of time units is not used for uplink data transmission, and the terminal equipment discards or postpones the transmission of the first data transmission corresponding to the first time unit according to the first information and the second information, so that the PUSCH demodulation failure without the DMRS is avoided, and the purpose of improving the reliability of the data transmission is achieved.

Description

Data transmission method, device and storage medium

Technical Field

The present application relates to communications technologies, and in particular, to a data transmission method, an apparatus, and a storage medium.

Background

Compared with the conventional mobile broadband (MBB) service such as video transmission, the new service of future wireless communication, for example, the ultra-reliable low-latency communication (URLLC) service such as Augmented Reality (AR), Virtual Reality (VR), car networking, telemedicine, and industrial control, has higher requirements for transmission latency and transmission reliability. In order to enhance transmission reliability, inFifth generation (5)^thgeneration, 5G) a Physical Uplink Shared Channel (PUSCH) of a New Radio (NR) in a mobile communication system introduces a multiple repetition mechanism, that is, the same data packet is repeatedly sent K times on K time units (or K PUSCHs corresponding to the K time units), where K is an integer greater than 1.

In an existing NR system, when a network device schedules a terminal device to perform multiple retransmission through an Uplink (UL) grant (grant), or the terminal device needs to perform multiple retransmission on a scheduling free (GF) time-frequency resource configured by the network device, if a time unit carrying a certain transmission in the multiple retransmission is configured by the network device as a part or all of time units used for downlink data transmission, the terminal device does not transmit a PUSCH corresponding to the time unit used for downlink data transmission, or discards (cancel) or ignores (unit) a PUSCH corresponding to the time unit used for downlink data transmission.

In summary, in the current technical solution, if one of the consecutive PUSCHs sharing the DMRS collides with a time unit configured or indicated by the network device and not used for PUSCH transmission, the subsequent PUSCH without the DMRS is easily failed to demodulate after the collided PUSCH is directly discarded.

Disclosure of Invention

The application provides a data transmission method, a data transmission device, data transmission equipment and a data transmission storage medium, which are used for solving the problem that if one PUSCH in a plurality of continuous PUSCHs sharing DMRS collides with a time unit which is configured by network equipment and is not used for PUSCH transmission, the PUSCH is discarded, and then the subsequent PUSCH demodulation without the DMRS is easy to fail.

In a first aspect, the present application provides a method for transmitting data,

receiving first information from a network device, wherein the first information is used for notifying a terminal device of performing K data transmissions on K consecutive time units, K is an integer greater than 1, the K time units correspond to one of the K data transmissions, the K data transmissions include a first data transmission and at least one data transmission after the first data transmission, and the at least one data transmission is a data transmission which is notified by signaling and does not include a DMRS;

receiving second information from the network device, where the second information is used to notify that at least one time domain symbol in a first time unit is not used for uplink data information transmission, and the first time unit is a time unit corresponding to the first data transmission in the K time units;

and processing data information according to the first information and the second information.

In this scheme, any time unit in the K time units is used to carry data transmission corresponding to the any time unit in the K data transmissions.

In one particular implementation of this aspect, the first data transmission is temporally contiguous with the at least one data transmission;

or, the first data transmission is consecutive in time with the at least one data transmission, and when the at least one data transmission includes at least two data transmissions, any two adjacent data transmissions of the at least two data transmissions are consecutive in time.

In another specific implementation of the scheme, the first information is specifically configured to notify that K times of repeated transmission are performed on the first data packet in the K time units, where each data transmission in the K data transmissions corresponds to one transmission of the first data packet.

Optionally, the time length of each time unit in the K time units is less than the time length of one time slot.

On the basis of any of the above schemes, at least one of the K data transmissions includes a data transmission that precedes the at least one data transmission and includes the DMRS.

Optionally, a time domain symbol in the at least one time domain symbol notified by the second information is any one of:

a downlink symbol, a flexible symbol, or a time domain symbol for transmitting an SRS.

On the basis of any of the above schemes, of the K data, there is a data transmission including a DMRS prior to the first data transmission, or the first data transmission includes a DMRS.

Optionally, the second information is used to notify that a part of the at least one time domain symbol is on a first slot, and a part of the at least one time domain symbol is on a second slot, where the second slot is a next slot of the first slot.

On the basis of any one of the foregoing schemes, in a specific implementation manner, the performing data information processing according to the first information and the second information includes:

discarding the first data transmission and the at least one data transmission.

Optionally, the discarding, by the terminal device, the first data transmission includes:

the terminal equipment stops the first data transmission from the starting time of the first data transmission;

alternatively, the first and second electrodes may be,

the terminal equipment stops the first data transmission from the at least one time domain symbol indicated by the second information.

In the above scheme, any time domain symbol in the time unit corresponding to the at least one data transmission is not signaled to be not used for uplink data information transmission.

Optionally, the discarding the first data transmission and the at least one data transmission includes:

discarding the first data transmission and the at least one data transmission if the time length of the at least one time domain symbol notified by the second information is greater than a first threshold.

Optionally, the processing data information according to the first information and the second information includes:

if the time length of the at least one time domain symbol notified by the second information is not greater than the first threshold, discarding the first data transmission, and performing the at least one data transmission.

On the basis of any scheme, in the concrete implementation of the data transmission method,

if, of the K data transmissions, all data transmissions subsequent to the first data transmission are data transmissions that do not include a DMRS, then the at least one data transmission is all data transmissions subsequent to the first data transmission of the K data transmissions.

Optionally, if, in the K data transmissions, after the first data transmission, there is a second data transmission that is closest to the first data transmission and includes a DMRS, the at least one data transmission is all data transmissions between the first data transmission and the second data transmission in the K data transmissions.

Optionally, if the first data transmission includes the DMRS, the terminal device discards the first data transmission and the at least one data transmission;

and if the first data transmission does not comprise the DMRS, the terminal equipment discards the first data transmission and carries out the at least one data transmission.

On the basis of any of the foregoing solutions, in another specific implementation of the data transmission method, the performing data information processing according to the first information and the second information includes:

discarding the first data transmission and the at least one data transmission;

and resuming the second data transmission, or resuming the second data transmission and the data transmission after the second data transmission in the K data transmissions from the beginning of the second data transmission.

In another specific implementation of the data transmission method based on any of the foregoing solutions, the performing data information processing according to the first information and the second information includes:

discarding the first data transmission;

the at least one data transmission is made and the DMRS is sent in a starting data transmission of the at least one data transmission.

if the first data transmission is a signaled data transmission that does not include a DMRS, then the first data transmission and the at least one data transmission are performed after the at least one time domain symbol, and the DMRS is transmitted in the first data transmission.

In a second aspect, the present application further provides a data transmission method, where the method includes:

sending first information to a terminal device, wherein the first information is used for notifying the terminal device to send K data transmissions on K consecutive time units, K is an integer greater than 1, the K time units correspond to one of the K data transmissions, the K data transmissions include a first data transmission and at least one data transmission after the first data transmission, and the at least one data transmission is a data transmission which is notified by signaling and does not include a DMRS;

sending second information to the terminal device, where the second information is used to notify that at least one time domain symbol in a first time unit is not used for uplink data information transmission, and the first time unit is a time unit corresponding to the first data transmission in the K time units;

and receiving data information from the terminal equipment.

In this aspect, it should be understood that the data information is at least one data transmission of the K data transmissions.

Optionally, the first data transmission is consecutive in time to the at least one data transmission;

In a specific implementation of the solution, the first information is specifically configured to notify that K times of repeated transmission are performed on the first data packet over the K time units, where each data transmission of the K data transmissions corresponds to one transmission of the first data packet.

In a specific implementation of this aspect, the K data transmissions include at least one data transmission that precedes the at least one data transmission and includes the DMRS.

Optionally, the second information is used to notify that a part of the at least one time domain symbol is on a first time slot, and a part of the at least one time domain symbol is on a second time slot, where the second time slot is a next time slot of the first time slot.

On the basis of the above scheme, the data information does not include the first data transmission and the at least one data transmission. The meaning of this scheme is that the first data transmission and the at least one data transmission are data transmissions discarded by the terminal device.

Optionally, any time domain symbol in the time unit corresponding to the at least one data transmission is not signaled to be unused for uplink data information transmission.

On the basis of any of the above schemes, if the time length of the at least one time domain symbol notified by the second information is greater than a first threshold, the data information does not include the first data transmission and the at least one data transmission.

Optionally, if the time length of the at least one time domain symbol notified by the second information is not greater than the first threshold, the data information does not include the first data transmission, and the data information includes the at least one data transmission.

Optionally, if, in the K data transmissions, all data transmissions after the first data transmission are data transmissions that do not include the DMRS, the at least one data transmission is all data transmissions after the first data transmission in the K data transmissions.

Optionally, the data information does not include the first data transmission and the at least one data transmission, and the data information includes the second data transmission or includes the second data transmission and a data transmission subsequent to the second data transmission in the K data transmissions.

Optionally, the data information does not include the first data transmission, and the data information includes the at least one data transmission, and a starting data transmission of the at least one data transmission includes a DMRS.

Optionally, if the first data transmission is a data transmission that is signaled and does not include a DMRS, the data information includes the first data transmission and the at least one data transmission, and the first data transmission includes the DMRS.

In a third aspect, the present application provides a communication apparatus, which may be a terminal device or a chip applied to the terminal device. The communication apparatus includes:

the device comprises a receiving module, a processing module and a sending module for transmitting data information;

the receiving module is configured to receive first information from a network device, where the first information is used to notify the communication apparatus to send K data transmissions on K consecutive time units, where K is an integer greater than 1, the K time units are in one-to-one correspondence with the K data transmissions, the K data transmissions include a first data transmission and at least one data transmission after the first data transmission, and the at least one data transmission is a data transmission that is notified by signaling and does not include a DMRS;

the receiving module is further configured to receive second information from the network device, where the second information is used to notify that at least one time domain symbol in a first time unit is not used for uplink data information transmission, and the first time unit is a time unit corresponding to the first data transmission in the K time units;

the processing module is used for processing data information according to the first information and the second information.

Optionally, the first information is specifically used to notify that K times of repeated transmission are performed on the first data packet in the K time units, where each data transmission in the K data transmissions corresponds to one transmission of the first data packet.

Optionally, at least one of the K data transmissions includes a data transmission that precedes the at least one data transmission and includes a DMRS.

downlink symbols, flexible symbols, or time domain symbols for transmitting sounding reference signals, SRS.

On the basis of any of the above schemes, the processing module is specifically configured to:

discarding the first data transmission and the at least one data transmission.

Optionally, the processing module is specifically configured to:

Optionally, the processing module is specifically configured to discard the first data transmission if the time length of the at least one time domain symbol notified by the second information is not greater than the first threshold;

the sending module is specifically configured to send the at least one data transmission.

Optionally, the processing module is specifically configured to discard the first data transmission and the at least one data transmission;

the sending module is configured to recover the second data transmission, or recover, from the second data transmission, the second data transmission and data transmission after the second data transmission in the K data transmissions;

wherein the second data transmission is a data transmission of the K data transmissions that is closest to the first data transmission and that includes a DMRS after the first data transmission; the at least one data transmission is all data transmissions between the first data transmission and the second data transmission of the K data transmissions.

Optionally, the processing module is further configured to discard the first data transmission;

the transmitting module is further configured to perform the at least one data transmission and transmit the DMRS in an initial data transmission of the at least one data transmission.

Optionally, if the first data transmission is signaled data transmission that does not include a DMRS, the sending module is specifically configured to perform the first data transmission and the at least one data transmission after the at least one time domain symbol, and send the DMRS in the first data transmission.

In a fourth aspect, the present application provides a communication apparatus, which may be a network device or a chip applied to the network device. The communication apparatus includes:

a sending module, configured to send first information to a terminal device, where the first information is used to notify the terminal device to send K data transmissions on K consecutive time units, where K is an integer greater than 1, the K time units are in one-to-one correspondence with the K data transmissions, the K data transmissions include a first data transmission and at least one data transmission after the first data transmission, and the at least one data transmission is a data transmission that is notified by signaling and does not include a demodulation reference signal DMRS;

the sending module is further configured to send second information to the terminal device, where the second information is used to notify that at least one time domain symbol in a first time unit is not used for uplink data information transmission, and the first time unit is a time unit corresponding to the first data transmission in the K time units;

and the receiving module is used for receiving data information from the terminal equipment, wherein the data information is determined by the terminal equipment according to the first information and the second information.

Optionally, the data information does not include the first data transmission and the at least one data transmission.

Optionally, if the time length of the at least one time domain symbol notified by the second information is greater than a first threshold, the data information does not include the first data transmission and the at least one data transmission.

In a fifth aspect, the present application further provides a communication apparatus, including: a processor coupled with a memory;

the memory for storing a computer program;

the processor is configured to execute the computer program stored in the memory, so that the communication apparatus executes the data transmission method provided in any implementation manner of the first aspect or the second aspect.

In a sixth aspect, the present application provides a computer-readable storage medium comprising: a program or instructions for implementing the method for transmitting data according to any one of the implementations of the first or second aspect when the program or instructions are run on a computer.

In a seventh aspect, the present application provides a chip, comprising: the interface circuit is coupled with the processing circuit, and the processing circuit is configured to execute the data transmission method provided in any implementation manner of the first aspect or the second aspect.

According to the data transmission method, the data transmission device and the data transmission storage medium, the terminal equipment receives first information sent by the network equipment and used for informing that a plurality of data transmissions are sent on a plurality of time units, the time units are in one-to-one correspondence with the data transmissions, at least one data transmission included in the plurality of data transmissions does not include a DMRS, the terminal equipment also receives second information used for informing that the first time unit in the plurality of time units is not used for uplink data transmission, and the terminal equipment discards or postpones the transmission and other processing on the first data transmission corresponding to the first time unit according to the first information and the second information, so that the PUSCH demodulation failure without the DMRS is avoided, and the purpose of improving the reliability of the data transmission is achieved.

Drawings

FIG. 1 is a schematic diagram of a time domain resource pattern for multiple retransmission;

fig. 2 is a diagram illustrating DMRS overhead in a multiple repetition transmission;

fig. 3 is a schematic diagram of a PUSCH with multiple repeated transmissions colliding with a time unit configured by a network device to be downstream;

fig. 4 is a schematic diagram of the problem that occurs after collision of a PUSCH transmitted repeatedly for a plurality of times and a time unit configured to be downlink by a network device;

fig. 5 is a schematic flowchart of a first embodiment of a data transmission method provided in the present application;

FIG. 6 is a schematic diagram of a first time unit crossing a slot boundary provided herein;

FIG. 7 is a schematic illustration of discarding a first data transmission and at least one data transmission as provided herein;

FIG. 8 is a schematic diagram of a second discarding mode provided in the present application;

fig. 9 provides a method for determining whether to discard subsequent data transmissions without DMRS based on a length of time of an interruption;

fig. 10 is a diagram illustrating a determination of whether to discard a subsequent data transmission according to whether a DMRS is included in a first data transmission provided in the present application;

fig. 11 is a schematic diagram of transmitting an additional DMRS after discarding a first data transmission as provided herein;

fig. 12 is a diagram of deferring transmission of a first data transmission and transmitting an additional DMRS as provided herein;

fig. 13 is a schematic structural diagram of a first embodiment of a communication device provided in the present application;

fig. 14 is a schematic structural diagram of a second communication device according to an embodiment of the present disclosure.

Detailed Description

In order to facilitate understanding of the embodiments of the present application, a brief description will be given below of some terms and technical principles involved in the embodiments of the present application.

Mono, 5G NR

In Long Term Evolution (LTE) and 5G NR systems, the smallest resource unit for data transmission is a Resource Element (RE), corresponding to 1 time domain symbol in the time domain and 1 subcarrier in the frequency domain. The time domain symbol in the present application may be an Orthogonal Frequency Division Multiplexing (OFDM) symbol, or may be a single carrier frequency division multiple access (SC-FDMA) symbol, where SC-FDMA is also called an orthogonal frequency division multiplexing with transform precoding (OFDM with TP). A Resource Block (RB) is composed of a plurality of consecutive subcarriers within one time domain symbol or a plurality of consecutive subcarriers within a plurality of time domain consecutive time domain symbols. The RB is a basic unit of resource scheduling in LTE and 5G NR systems.

The time domain granularity for carrying a data packet is one Transmission Time Interval (TTI). The length of one TTI may be S time domain symbols or less than S time domain symbols. A slot including S time domain symbols is called a slot (slot) or a full slot (full slot), and a slot smaller than S time domain symbols is called a mini-slot or a non-slot. Wherein, for a common Cyclic Prefix (CP), S is 14; for extended CP, S-12.

Scheduling-free grant uplink transmission

The uplink transmission of the NR system may be scheduled by the network device, and specifically includes that the network device instructs the terminal device to send uplink data information on the corresponding PUSCH through an uplink grant UL grant in the downlink control channel. If a service arrives and uplink data information needs to be sent, the terminal device needs to send a Scheduling Request (SR) to the network device first, send a scheduling UL grant to the terminal device after the network device receives the SR, and send uplink data on an uplink resource scheduled by the UL grant. Although the scheduling method has the advantages of high reliability and high channel utilization efficiency, the process from transmitting SR to receiving UL and then transmitting uplink information on the resources scheduled by the UL grant has a certain time delay. In order to reduce the delay, the NR system introduces a scheduling free (GF) uplink transmission mode: the network device configures and/or activates GF resources for uplink transmission in advance, and if a service arrives at the terminal device, the terminal device can directly send uplink data information on the GF resources without sending an SR to the network device.

The schedule-free may also be referred to as a non-scheduled (grant-less) or a configured scheduled (CG) or a non-scheduled with out grant (TWG).

The resource used for GF transmission may be a dedicated resource allocated to the terminal device and not allocated to other terminal devices, or may be a shared resource allocated to a plurality of terminal devices including the terminal device. The time frequency resource, modulation coding mode, pilot frequency information, etc. used for GF transmission are called GF parameters. The GF parameters can be configured to the terminal equipment by the network equipment through high-layer signaling; the terminal device may also be indicated by the network device through a semi-static UL grant for activating GF transmission, such as a UL grant scrambled by a configured scheduled radio network temporary identifier (CS-RNTI); the terminal device can also be notified by a method of combining the semi-static UL grant indication through high-layer signaling configuration. In the present application, the higher layer signaling may be Radio Resource Control (RRC) signaling.

The network device notifies the GF parameters to the terminal device through the high layer signaling, the semi-static UL grant, or the combination of the high layer signaling and the semi-static UL grant, which is called as: and the network equipment configures the GF parameters to the terminal equipment.

For the time unit configured by the network device for the terminal device to send the data information in the GF manner, the time unit configured by the network device for the terminal device to perform GF transmission may be referred to as a time unit configured by the network device for the terminal device to send the data packet, or may be referred to as a time unit configured by the network device to notify the terminal device through a configured UL grant (configured UL grant).

For a time unit configured for GF transmission by any network device, the terminal device may or may not occupy the time unit for data transmission.

Under the condition that the terminal device is not scheduled by the UL grant, the terminal device uses the GF parameters configured by the network device on the time-frequency resources configured by the network device for GF transmission, which is called to perform data transmission in a GF mode. The network device configures the resources for GF transmission to the terminal device and enables the terminal device to perform data transmission on the resources for GF transmission configured by the network device in a GF mode, which is called that the network device configures the terminal device to perform data transmission in the GF mode.

The time domain resources configured by the network device for GF transmission are periodic, with the period referred to as the GF period. For example, if the GF period is 10 slots (slots), and the first 4 slots in each GF period are used for GF transmission, the available GF time domain resources include slots { #0, #1, #2, #3, #10, #11, #12, #13, #20, #21, #22, #23, … … }, where n in # n denotes the slot number. In one possible case, all GF TOs within one GF period correspond TO the same hybrid automatic repeat request (HARQ) process Identity (ID). In another possible situation, GF time domain resources available in one GF period correspond to different HARQ process IDs, that is, the network device may configure the terminal device to use multiple HARQ processes to send different data packets in one GF period.

The HARQ process ID is also referred to as HARQ ID or HARQ process number (process number), etc.

Third, multiple repetition mechanism of uplink PUSCH

In order to enhance transmission reliability, the uplink PUSCH of NR further introduces a multiple repetition mechanism, that is, the same data packet is repeatedly transmitted K times on K time units (or K PUSCHs corresponding to the K time units), where K is an integer greater than 1, and the K repeated transmissions all correspond to the same HARQ process ID. Any one of the above K time units or a resource for carrying any one of the K repeated transmissions is referred TO as a Transmission Opportunity (TO).

For scheduling (GB) based transmission, K time units for K repeated transmissions are scheduled by the network device through the UL grant. Wherein, a Redundancy Version (RV) number corresponding to any one of the K times of repeated transmissions is predefined or indicated by the network device.

For GF transmission, K time units for K repeated transmissions are configured or indicated by the network device. The terminal device can occupy all the K TO TO send the K TO within a GF period, and can also occupy part of the K TO TO send data information, for example, when an uplink service arrives, the terminal device can not send GF data information on the first TO of the K TO, but only occupy the subsequent TO TO send. If the terminal device has sent GF data information TO the last of the K TOs, GF transmission in the current GF period is stopped. The K repetitions may all correspond to the same RV number, or may correspond to a plurality of different RV version numbers, respectively. The RV version number corresponding to the data packet in a certain time unit is related to the sequence numbers of the time unit in K time units. For example, when K is 2, K TOs correspond TO RV {0, 2} or RV {0, 3 }; for another example, when K is 4, K TOs correspond TO RV {0, 2,3, 1} or RV {0, 3, 0, 3 }; for another example, when K is 8, K TOs correspond TO RV {0, 2,3, 1, 0, 2,3, 1} or RV {0, 3, 0, 3, 0, 3}, respectively.

Fig. 1 is a schematic diagram of a time domain resource pattern for multiple retransmission. As shown in fig. 1, for GB and GF transmission, there may be the following patterns (patterns) between K time units for carrying K repeated transmissions:

pattern 1: the K times of repeated transmission are carried on K full slots, any one time of the K times of repeated transmission is carried on one full slot, and the K full slots are continuous in time or continuous in slot serial numbers. For example, as shown in fig. 1(a), K is 4, and the terminal device transmits 4 repeated transmissions of the same packet consecutively occupying time slots n to n + 3.

Pattern 2: the K repeated transmissions are carried on K full slots, but any one of the K repeated transmissions is carried on a mini slot, that is, any two adjacent transmissions are carried on mini-slots in different full slots, and two adjacent mini-slots are discontinuous in time. For example, as shown in fig. 1 (b), K is 4, the terminal device continuously occupies time slots n to n +3 to send 4 repeated transmissions of the same data packet, and each repeated transmission is carried on a mini slot (corresponding to symbols 0 to 6) in a corresponding time slot of n to n + 3.

Pattern 3: any one of the K repeated transmissions is carried on a mini slot, at least two of the K repeated transmissions are in a full slot, and two adjacent mini-slots are continuous in time or back-to-back (back-to-back). For example, as shown in (c) of fig. 1, K is 8, and the terminal device continuously occupies time slots n to n +3 to send 8 repeated transmissions of the same data packet, where each repeated transmission is carried on a mini slot (corresponding to symbols 0 to 6 or symbols 7 to 13) in a corresponding time slot of n to n + 3.

Pattern 3: any one of the K repeated transmissions is borne on the mini slot, at least two of the K repeated transmissions are in one full slot, and the adjacent two mini-slots are discontinuous in time. For example, as shown in (d) in fig. 1, K is 8, the terminal device continuously occupies time slots n to n +3 to send 8 repeated transmissions of the same data packet, and each repeated transmission is carried on a mini slot (corresponding to symbols 0 to 2 or symbols 7 to 9) in a corresponding time slot of n to n + 3.

For pattern 1 and pattern 2, the demodulation reference signal DMRS in each repeatedly transmitted PUSCH is carried on the repeatedly transmitted PUSCH.

However, when pattern 3 and pattern 4 are introduced, the PUSCH transmitted repeatedly many times is denser in the time domain, and the PUSCH transmitted for each time may correspond to a mini slot with a shorter time length, for example, 1 symbol or 2 symbols, and if the PUSCH transmitted repeatedly each time contains a DMRS, the overhead is large. In order to save overhead and save more resources for data information transmission, improve transmission efficiency or improve transmission reliability, a DMRS sharing mechanism may be introduced in the data transmission process, that is, a plurality of PUSCHs share 1 DMRS, and channel information estimated by using the shared DMRS is used to demodulate data information on a plurality of PUSCHs. Considering that when the network device receives the PUSCH transmitted by the terminal device, the DMRS needs to be received first to obtain the channel estimation information, and then the uplink data information in the PUSCH is demodulated using the channel estimation information, in order to reduce the delay, the DMRS is included in the earliest PUSCH among the plurality of PUSCHs, and one or more subsequent PUSCHs do not include the DMRS, and the network device demodulates the data information of the subsequent PUSCH using the DMRS in the earlier PUSCH. The DMRS in this earliest one PUSCH is referred to as a front-loaded DMRS. Fig. 2 is a diagram illustrating DMRS overhead in multiple repeated transmissions, for example, as shown in fig. 2, when the duration of PUSCH in each repeated transmission in multiple repeated transmissions is 3 symbols, and K is 8, if each PUSCH contains a DMRS, 4 DMRS symbols are required for each complete slot, as shown in (a) in fig. 2; if two adjacent PUSCHs share 1 DMRS, only 2 DMRS symbols are needed per full slot, as in (b) of fig. 2.

Considering that, in multiple repeated transmissions of the NR system, there may occur a case where a time unit of a certain transmission collides with a time domain symbol not used for PUSCH transmission, which is indicated or configured by the network device, in the case of sharing a DMRS with multiple PUSCHs, how to solve such a collision case needs further research.

Fig. 3 is a schematic diagram of collision between a PUSCH transmitted repeatedly a plurality of times and a time unit configured to be downlink by a network device, as shown in fig. 3, where K is 4, and the 2 nd PUSCH in 4 times of repeated transmission collides with a downlink symbol configured by the network device, so as to discard the 2 nd PUSCH and transmit the 1 st, 3 th and 4 th PUSCHs. Fig. 4 is a schematic diagram illustrating a problem occurring after collision between a PUSCH repeatedly transmitted for multiple times and a time unit configured to be downlink by a network device, as shown in fig. 4, after a collision condition as shown in fig. 3 occurs in the prior art, in a manner of continuing to transmit subsequent data transmission by directly discarding the collided data transmission, the following problem may occur:

problem 1: if there is a PUSCH without a DMRS after the collided PUSCH, that is, the subsequent PUSCH without a DMRS implements data information demodulation through the DMRS sharing the previous PUSCH, after transmission of the collided PUSCH is interrupted, phase hopping may be caused due to radio frequency off, correlation between the subsequent PUSCH without a DMRS and the DMRS before the collided PUSCH deteriorates, and demodulation failure may be caused, as shown in (a) in fig. 4.

Problem 2: if the collided PUSCH includes a DMRS and a PUSCH without the DMRS is located behind the collided PUSCH, that is, the subsequent PUSCH realizes data information demodulation by sharing the DMRS included in the collided PUSCH, even if the problem of phase hopping in problem 1 is not considered, the subsequent PUSCH does not have a nearby DMRS for demodulation due to dropping of the DMRS, and may need to use an earlier DMRS for demodulation, and a time interval between the DMRS and the PUSCH is large, so that time correlation is deteriorated, and demodulation failure may also be caused, as shown in fig. 4 (b).

Based on the above problems, the present application provides a data transmission method, which solves the problem of how to discard a PUSCH or transmit a DMRS in the case that one of consecutive PUSCHs sharing the DMRS collides with a time unit configured or indicated by a network device and not used for PUSCH transmission, so as to avoid PUSCH demodulation failure without including the DMRS.

Considering that a shared pre-DMRS is used when a terminal device transmits a plurality of PUSCH which are consecutive in time, if one PUSCH of the plurality of PUSCHs collides with a time unit which is configured by a network device and is not used for PUSCH transmission, due to radio frequency interruption, even if a subsequent PUSCH without a DMRS is continuously transmitted after the collision is over, correct demodulation of the PUSCH cannot be guaranteed by the network device, so that several schemes capable of avoiding demodulation failure and achieving the purpose of improving data reliability are proposed in the present application, which specifically include:

in scheme 1, the terminal device discards subsequent PUSCHs without DMRS besides the collided PUSCHs.

In scheme 2, the terminal device discards the collided PUSCH, but continues to transmit the subsequent PUSCH, and additionally transmits the preamble DMRS on the first PUSCH in the subsequent PUSCH to ensure the demodulation performance.

According to the scheme 3, the terminal equipment defers the collided PUSCH and the subsequent PUSCH to the time unit of the collision, and additionally transmits the pre-DMRS on the collided PUSCH to ensure the demodulation performance.

The data transmission method provided by the present application can be applied to a wireless communication system, which can be a 5G NR system, or a new wireless communication system in the future, and the present solution is not limited thereto.

In the embodiments of the present application, the present invention relates to a network device and a terminal device. The network device is an access device that the terminal device accesses to the mobile communication system in a wireless manner, and may be a base station NodeB, an evolved NodeB (eNodeB), a Transmission Reception Point (TRP), a next generation base station (gNB) in a 5G mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system. The embodiments of the present application do not limit the specific technologies and the specific device forms used by the network devices. The Terminal device may also be referred to as a Terminal, a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), and the like. The terminal device may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote surgery (remote medical supply), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and so on. The embodiment of the present application does not limit the specific technology and the specific device form adopted by the terminal device.

The following describes the data transmission method provided by the present application in detail by using specific embodiments. The execution main body of the embodiment of the present application may be a network device and a terminal device, or a chip applied to the network device and a chip applied to the terminal device, and for convenience of description, the network device and the terminal device are taken as the execution main body for example to describe below.

Fig. 5 is a schematic flowchart of a first embodiment of a data transmission method provided in the present application; as shown in fig. 5, the data transmission method specifically includes the following steps:

s101: the terminal device receives the first information from the network device.

In the scheme, the first information is used to notify the terminal device to perform K data transmissions on K consecutive time units, where K is an integer greater than 1, the K time units are in one-to-one correspondence with the K data transmissions, the K data transmissions include the first data transmission and at least one data transmission after the first data transmission, and the at least one data transmission is a data transmission which is notified by a signaling and does not include a DMRS.

In this step, the network device sends first information to the terminal device, and the terminal device receives the first information, where the first information is used to notify (here, the notification refers to configuring, scheduling, or indicating) that the terminal device performs K data transmissions on K time units that are consecutive in time, and any one time unit in the K time units is used to carry a data transmission corresponding to the any one time unit in the K data transmissions, that is, one time unit carries one data transmission. The K data transmissions include a first data transmission and one or more data transmissions subsequent to the first data transmission, i.e., at least one data transmission, the at least one data transmission being a data transmission signaled by the network device that does not include the DMRS, where the notification refers to a configuration or an indication.

It should be understood that for any one of the K data transmissions (e.g., the first data transmission, or any one of the at least one data transmission), the terminal device performs the any one data transmission also referred to as: the terminal device sends the arbitrary data transmission, or the terminal device sends the arbitrary data transmission. Specifically, the sending of the any one data transmission refers to sending information in the any one data transmission; transmitting the arbitrary data transmission means transmitting information in the arbitrary data transmission.

In one particular implementation of this aspect, it is to be understood that the first data transmission is temporally contiguous with the at least one data transmission; or, the first data transmission is consecutive in time with the at least one data transmission, and when the at least one data transmission includes at least two data transmissions, any two adjacent data transmissions of the at least two data transmissions are consecutive in time. Wherein the first data transmission and the at least one data transmission are consecutive in time, meaning that the first data transmission and a starting data transmission of the at least one data transmission are consecutive in time.

That is, the first data transmission and the at least one data transmission are consecutive in time, and a data transmission of the at least one data transmission is also consecutive in time. When the at least one data transmission is a data transmission, the first data transmission and the at least one data transmission are consecutive in time; when the at least one data transmission includes at least two data transmissions, the first data transmission and the at least two data transmissions are consecutive in time, and any two adjacent data transmissions of the at least two data transmissions are consecutive in time, or two data transmissions of the at least two data transmissions are consecutive in time.

Or, said first time unit is temporally contiguous with at least one time unit corresponding to at least one data transmission; or, the first time unit is temporally continuous with at least one time unit corresponding to at least one data transmission, and when the at least one data transmission includes at least two data transmissions, any adjacent two time units of the at least two time units corresponding to the at least two data transmissions are temporally continuous. The first time unit and the at least one time unit corresponding to the at least one data transmission are consecutive in time, specifically, the first time unit and a starting time unit in the at least one time unit corresponding to the at least one data transmission are consecutive in time. That is, the first time unit and the at least one time unit corresponding to the at least one data transmission are consecutive in time, and time units of the at least one time unit corresponding to the at least one data transmission are also consecutive in time. When the at least one data transmission is one data transmission, the first time unit and a time unit corresponding to the one data transmission are consecutive in time; when the at least one data transmission includes at least two data transmissions, the first data transmission is temporally consecutive with at least two time units corresponding to the at least two data transmissions, and any two adjacent time units of the at least two time units corresponding to the at least two data transmissions are temporally consecutive, or two time units of the at least two time units corresponding to the at least two data transmissions are temporally consecutive.

In the embodiment of the present application, the K time units that are consecutive in time means that the K time units are consecutive in time domain. As shown in fig. 1(a), a total of 4 repeated transmissions are performed, where K is 4, and there is no interval between any two adjacent time units in the K time units.

Optionally, the K time units that are consecutive in time also mean that the K time units are consecutive in time sequence number, that is, sequence numbers between any two adjacent time units in the K time units are also adjacent, or that no other time unit used for data transmission by the terminal device is included between any two adjacent time units. For example, as shown in each drawing in fig. 1,

time units

1,2,3, and 4 are all time units configured for data transmission of the terminal device, and there is no time unit configured for data transmission of other devices.

Specifically, for any time unit in the K time units, the terminal device may use the time unit to perform corresponding data transmission, or may not use the time unit to perform corresponding data transmission, for example, when there is no uplink service in the buffer of the terminal device, the time unit may not be used to perform corresponding data transmission.

In a specific implementation of the scheme, the first information may be a high layer signaling, or may be a semi-static UL grant, or may include a high layer signaling and a semi-static UL grant for configuring the GF transmission. Compared with a scheduling mode in which the terminal device is instructed to perform K data transmissions, in a case where the terminal device is configured in a GF-based mode, since the configuration information is semi-static, and compared with the dynamic UL grant information, the network device is configured in K GF-based time units that are semi-static, it is more difficult for the semi-static configured time units to avoid collision with time domain symbols configured or instructed by the network device that are not used for uplink data transmission, and therefore the problem of how to handle collision is more prominent in the present application.

In a specific implementation manner, the first information is used to notify the terminal device to perform K data transmissions on K consecutive time units, where the first information is used to schedule the terminal device to perform K data transmissions on K consecutive time units.

More specifically, the first information may be a dynamic UL grant, such as a user-specific RNTI, e.g., a cell radio network temporary identifier (C-RNTI), a scrambled UL grant.

Further, the UL grant is a single UL grant. That is, the K data transmissions are scheduled for the same UL grant, rather than being scheduled separately for multiple different UL grants.

In another specific implementation manner, the first information is used to notify the terminal device to perform K data transmissions on K consecutive time units, that is, the first information is used to configure the terminal device to perform K data transmissions on K consecutive time units, or to say, the first information is used to configure the terminal device to perform K data transmissions on K consecutive time units in a GF manner. The data transmission performed by the terminal device in the GF mode is as described above and will not be described in detail.

More specifically, the first information may be a higher layer signaling, such as an RRC signaling, or a semi-static UL grant, or may include a higher layer signaling and a semi-static UL grant for configuring the GF transmission, as described in the background, which is not described again.

In another specific implementation manner, a part of the K data transmissions is data transmission performed by the network device scheduling terminal device, and another part of the data transmissions is data transmission performed by the network device configuration terminal device in a GF manner. In this case, the first information includes configuration information for configuring the terminal device to perform data transmission in the GF mode, and also includes scheduling information for scheduling the terminal device to perform data transmission.

It should be understood that a time unit (e.g., any one of K time units, or a first time unit) refers to a continuous period of time resources used to carry information. For example, a time unit may be one Transmission Time Interval (TTI) or a plurality of TTIs in time succession, or one slot or a plurality of slots in time succession, or one mini-slot or a plurality of mini-slots in time succession, or one or a plurality of time domain symbols (symbols) in time succession.

Specifically, the time unit is a time unit for carrying one data transmission (transmission) (e.g., one data transmission of K data transmissions), and at this time, the time unit may be referred to as corresponding to the data transmission. The K data transmissions are in one-to-one correspondence with the K time units, or each time unit of the K time units is used for carrying one of the K data transmissions, and different time units carry different data transmissions.

The time unit corresponds to the data transmission, or the time unit is a time unit for carrying the data transmission, and may refer to: the time domain resource occupied by the data transmission is the time unit, or the PUSCH for the data transmission corresponds to the time unit in the time domain; for example, in fig. 1(c), the time unit corresponding to the kth data transmission in the K data transmissions is a symbol mod (K-1,2) × 7 to mod (K-1,2) × 7+6 of a time slot n + floor ((K-1)/2), where floor () represents rounding down and mod (K-1,2) represents modulo 2K-1. The time unit is a time unit for carrying the data transmission, and may also refer to: the time unit includes a time domain resource corresponding to the data transmission, or in other words, the time unit includes a time domain resource corresponding to a PUSCH for the data transmission; that is, the time unit may also include other time domain resources besides the time domain resource corresponding to the data transmission, for example, the time unit includes the time domain resource corresponding to the data transmission and a gap (gap) between the data transmission and the next adjacent data transmission that is not used for the data transmission by the terminal device; for example, in fig. 1(d), the time unit corresponding to the kth data transmission in the K data transmissions is the symbol mod (K-1,2) × 7 to mod (K-1,2) × 7+6 of the slot n + floor ((K-1)/2), the time unit carrying the kth data transmission, that is, the kth time unit in the K time units is the symbol mod (K-1,2) × 7 to mod (K-1,2) × 7+2 of the slot n + floor ((K-1)/2), and includes but is greater than the time domain resource corresponding to the kth data transmission.

Optionally, one data transmission in this application (for example, one data transmission in the K data transmissions or one data transmission in the L data transmissions described later) may also be referred to as a data packet, or the one data transmission corresponds to one data packet, or information carried by the one data transmission may be referred to as one data packet, where the data packet includes an original cell data packet before modulation and coding, and is also referred to as a Transport Block (TB) or a media access control protocol data unit (MAC PDU) or an uplink shared channel (UL-SCH). Optionally, the data packet is a data packet carried in one PUSCH or corresponds to a data packet in one PUSCH. Optionally, the data transmission in the present application is at least one temporally continuous data packet or corresponds to at least one temporally continuous data packet.

Optionally, the data transmission in this application (for example, any one of the K data transmissions) is also referred to as a PUSCH, where the PUSCH is also referred to as a PUSCH transmission (PUSCH transmission). Optionally, any one of the K data transmissions is a PUSCH or corresponds to a PUSCH. Optionally, any one of the K data transmissions is or corresponds to at least one temporally continuous PUSCH.

Optionally, the data transmission in this application (for example, any one of the K data transmissions) is also referred TO as a transmission opportunity TO. Optionally, any one of the K data transmissions is (or corresponds TO) a TO. Optionally, any one of the K data transmissions is (or corresponds TO) at least one temporally continuous TO.

It should be understood that the data information (also referred to as payload information) in a data transmission (e.g., any one of K data transmissions) in the present application includes information that can be carried by a PUSCH channel. Specifically, the data information in any one of the K data transmissions may be UL-SCH, Uplink Control Information (UCI), or a combination of UL-SCH and UCI. The UCI includes hybrid automatic repeat request-acknowledgement (HARQ-ACK) information and/or Channel State Information (CSI) information.

Specifically, payload information in data transmission is information used for transmission after code modulation, and is also referred to as data information.

Optionally, any one of the K time units is also referred to as a TTI in the present application, and the K time units are also referred to as K TTIs. Optionally, any time unit in the K time units is a TTI for carrying one data transmission. Optionally, any time unit in the K time units is at least one TTI that is consecutive in time.

Optionally, any one of the K time units in this application is also referred to as a slot or a mini-slot, and the K time units are also referred to as K slots or K mini-slots. Optionally, the slot is a slot for carrying data transmission; the mini-slot is used for carrying one data transmission. Optionally, the any time unit in the above scheme is at least one slot that is continuous in time or at least one mini-slot that is continuous in time.

It should be understood that any one of the K data transmissions configures or schedules data transmission of the terminal device for the network device, and the terminal device may or may not perform the any data transmission. For example, when the arbitrary data transmission collides with a time domain symbol that is indicated by the network device configuration and is not used by the terminal device to send the uplink data information, or when a certain data transmission before the arbitrary data transmission collides with a time domain symbol that is indicated by the network device configuration and is not used by the terminal device to send the uplink data information, and thus the arbitrary data transmission cannot share the DMRS, the terminal device does not perform the arbitrary data transmission. For another example, any one of the K data transmissions is a data transmission in which the network device configures the terminal device to send information in a GF manner, and the terminal device may determine whether to occupy a corresponding time unit for performing the any one data transmission according to a service arrival condition.

In a specific implementation of this scheme, the data transmission (e.g., the first data transmission, or any one of the K data transmissions) in this application is a data transmission including a DMRS, or a data transmission not including a DMRS. The data transmission including the DMRS means that the data transmission includes, in addition to payload information, a DMRS that is time-continuous with the payload information, or that a time element carrying the data transmission includes a time-domain symbol for carrying the DMRS. For example, the DMRS is used for demodulation of the payload information. Data transmission without DMRS means that the data transmission includes payload information and does not include a DMRS signal time-continuous with the payload information, or that a time cell carrying the data transmission does not include a time-domain symbol for carrying the DMRS. Further, data transmission without DMRS means that the data transmission includes payload information and does not include a DMRS signal that is time-continuous with and earlier than the payload information. For example, a network device may perform payload information demodulation on a data transmission via a DMRS included in another data transmission earlier than the data transmission.

It is to be understood that the at least one data transmission is a signaled data transmission that does not include a DMRS, and that the at least one data transmission is a network device signaled data transmission that does not include a DMRS, wherein the network device signals by the signaling that any one of the at least one data transmission does not include a DMRS.

It is to be understood that the network device may explicitly or implicitly inform the at least one data transmission through the signaling.

For example, the signaling explicitly informs the terminal device of which one or more of the K data transmissions do not include the DMRS, or the signaling explicitly informs the terminal device of which one or more of the K data transmissions include the DMRS, then the remaining ones of the K data transmissions are data transmissions that do not include the DMRS.

For another example, the signaling implicitly informs the time-domain locations of the DMRS in the K data transmissions, and the terminal device may determine which data transmission or transmissions include the DMRS or determine which data transmission or transmissions do not include the DMRS according to the time-domain locations of the DMRS in the K data transmissions. Specifically, if the time domain position of the time domain symbol in which a certain DMRS in the K data transmissions is located in a time unit corresponding to a certain data transmission, or is immediately before the time domain symbol in which payload (payload) information of a certain data transmission is located, the data transmission includes the DMRS. Otherwise, the data transmission is data transmission not including the DMRS.

Specifically, the signaling may be referred to as first signaling.

Optionally, in an embodiment of the scheme, the time domain positions of the DMRSs in the K data transmissions are configured to the terminal device by the network device, for example, the network device configures the time domain positions of the DMRSs in the K time units to the terminal device through a high layer signaling. At this time, the first signaling is the configuration information for configuring the time domain position of the DMRS, which is sent by the network device.

Optionally, the time domain positions of the DMRSs in the K data transmissions are indicated to the terminal device by the network device, for example, the network device indicates the time domain positions of the DMRSs in the K time units to the terminal device through the UL grant. In this case, the first signaling is the indication information for indicating the time domain position of the DMRS, which is sent by the network device.

Optionally, the time domain positions of the DMRSs in the K data transmissions are configured by the network device and indicated to the terminal device by the network device. For example, the network device configures a DMRS time domain position set through a high layer signaling or a semi-static UL grant, and indicates, through the UL grant, which specific time domain position in the DMRS time domain position set is the time domain position of the DMRS in the K time units. In this case, the first signaling includes the configuration information for configuring the time domain position of the DMRS and the indication information for indicating the time domain position of the DMRS, which are transmitted by the network device.

The time domain positions of the DMRS in the K time elements may include time element numbers of the DMRS in the K time elements, or may include a set of data transmissions including the DMRS in the K data transmissions, or a set of time elements or a set of time domain symbols including the DMRS in the K time elements.

It should be understood that the inclusion in embodiments of the present invention may also be referred to as inclusion.

Specifically, the network device configures or indicates, through the first information, a time-domain position of the DMRS in the K data transmissions, or configures or indicates, through the first information, which data transmissions in the K data transmissions contain the DMRS. That is, the first signaling is included in the first information.

It should be understood that the at least one data transmission being a data transmission not including a DMRS that is signaled by the network device means: the network device informs any one of the at least one data transmission that the DMRS is not included in the data transmission. In other words, the data transmission including the DMRS that is notified by the network device does not include any of the at least one data transmission. The notification includes any one of the three types (configuration, indication, configuration plus indication) of notification methods. For example, the network device notifies the data transmission containing the DMRS among the K data transmissions, and the remaining data transmissions (including the at least one data transmission) among the K data transmissions are the data transmissions not containing the DMRS notified by the network device.

It should be noted that, since the at least one data transmission does not include the DMRS, in order to enable the network device to demodulate the at least one data transmission, the network device notifies that the DMRS is included in a data transmission earlier than the at least one data transmission among the K data transmissions, and the data transmission is referred to as a data transmission including the DMRS. That is, at least one of the K data transmissions is prior to the at least one data transmission and includes the DMRS, where the data transmission including the DMRS is specifically data transmission including the DMRS notified by the network device. For example, the network device may effect demodulation of the at least one data transmission via the data transmission including the DMRS.

It should be understood that the data transmission including the DMRS may be the first data transmission, or may be a data transmission earlier than the first data transmission in the K data transmissions. That is, when the first data transmission also does not include the DMRS, the data transmission including the DMRS is a data transmission earlier than the first data transmission.

The method for transmitting data information in K data transmissions may include the following two ways:

mode 1: the K data transmissions include data transmissions of at least two corresponding different data packets. The at least two data transmissions corresponding to different data packets refer to the at least two data transmissions corresponding to different original cell information or different valid data information before modulation coding or different MAC PDUs or different TBs or different UL-SCHs. Further, any two different data transmissions in the K data transmissions correspond to different data packets.

Mode 2: the first information is specifically used to notify the terminal device to perform K times of repeated transmission on the first data packet over the K time units, where each data transmission of the K data transmissions corresponds to one transmission of the first data packet. The meaning of this scheme is that the first information is used to configure or schedule the K data transmissions of the terminal device over K time units that are consecutive in time, and the K repeated transmissions are performed on the same data packet (e.g. the first data packet), and each of the K time units is used to carry one transmission of the data packet.

It should be understood that, the first information is used to configure or schedule the terminal device to perform K repeated transmissions on the same data packet over K time units that are consecutive in time, and that one transmission of each time unit of the K time units that are consecutive in time is used to carry the data packet means that the first information configures or schedules the terminal device to send the same data packet (for example, the first data packet) in each time unit of the K time units, or each data transmission of the K data transmissions performed by the first information configures or schedules the terminal device corresponds to the same data packet. The network device configures or schedules the terminal device to repeatedly transmit the first data packet over a plurality of time units to correctly receive the first data packet when one of the transmission demodulation fails and the other transmission demodulation succeeds, thereby ensuring demodulation performance when channel conditions are poor.

It should be noted that, performing K times of repeated transmission on the first data packet in the K time units includes that original cell information of data packets (or different data transmissions in the K data transmissions) carried in different time units in the K time units is the same or effective data information before modulation coding is the same, but it is not limited whether information sent after modulation coding is the same or not. That is, the network device may configure or instruct the terminal device to use the same or different RV version numbers, or use the same or different DMRSs, or use the same or different scrambling codes to scramble when transmitting the first data packet in different time units of the K time units. Even if different RV version numbers, or different demodulation reference signal (DMRS) sequences, or different scrambling codes are used to scramble the first data packet when the network device configures or instructs the terminal device to transmit the first data packet in different time units of the K time units, the first data packets carried in different time units of the K time units (or different data transmissions of the K data transmissions) all correspond to the same original cell, i.e., correspond to the same MAC PDU, the same TB, or the same UL-SCH.

In addition, the K repeated transmissions correspond to the same HARQ process number.

It should be understood that the repeated transmission of the first data packet may also be referred to as aggregation or slot aggregation of the first data packet.

Optionally, the K data transmissions are all repeated data transmissions of the first data packet performed by the network device through one UL grant scheduling terminal device; or, the K time units are all time units occupied by all multiple times of repeated data transmission of the first data packet performed by the network device through one UL grant scheduling terminal device.

Optionally, the K data transmissions configure all multiple data transmissions of the terminal device to the first data packet for the network device; or the K time units are all time units occupied by the network device for configuring all repeated data transmission of the terminal device to the first data packet.

Optionally, the K data transmissions are a part of all multiple repeated data transmissions performed by the network device on the first data packet through one UL grant scheduling terminal device; or, the K time units are a part of all time units occupied by all multiple times of repeated data transmission of the first data packet by the network device through one UL grant scheduling terminal device.

Optionally, the K data transmissions configure a part of all multiple data transmissions performed on the first data packet by the terminal device for the network device; or the K time units are a part of all time units occupied by the network device configuration terminal device for all repeated data transmission of the first data packet.

Further, the length of each time unit in the K time units is smaller than the first preset time length. It is considered that when each of the K time elements corresponds to a longer time length, for example, greater than or equal to a first preset time length, DMRSs need to be included in each of the K data transmissions to ensure demodulation performance, so that DMRSs in other data transmissions do not need to be shared.

Furthermore, the length of each of the K time units in time succession is less than the time length of one time slot, that is, each of the K time units in time succession is a mini-slot. Similarly, when any one of the K time elements is a complete time slot, DMRSs are required to be included in each of the K data transmissions to ensure demodulation performance, and therefore DMRSs in other data transmissions do not need to be shared. A full slot here refers to a slot of length S time domain symbols, S12 or 14, as described above.

It should be understood that a full slot in this embodiment is also referred to as a slot (slot). Further, the K time units that are consecutive in time are all contained in one time slot.

S102: the terminal device receives the second information from the network device.

The second information is used to notify that at least one time domain symbol in the first time unit is not used for uplink data information transmission of the terminal device, and the first time unit is a time unit corresponding to the first data transmission in the K time units.

In this step, the terminal device receives second information sent by the network device, where the second information is used to configure or indicate (collectively referred to as notification) that at least one time domain symbol in a first time unit is not used for uplink data information transmission of the terminal device, and the first time unit is a time unit used for the first data transmission.

The second information is used to configure or indicate that at least one time domain symbol in the first time unit is not used for uplink data information transmission by the terminal device, that is, the first uplink transmission notified by the first information and the time domain symbol configured or indicated by the second information and not used for uplink data information transmission collide on the first time unit. In other words, the first information and the second information sent by the network device to the terminal device inform the terminal device that the actions performed are contradictory, i.e. the first information informs the terminal device to send the first data transmission, and the second information indicates that the terminal device does not occupy (or interrupt) at least one time domain symbol in the first time unit to send data information. In this case, the behavior rules of the terminal device need to be defined to avoid the above-mentioned ambiguous behavior. Considering that the data transmission is interrupted by the second information for transmitting downlink information or other uplink information with higher priority, such as SRS information, the action of interrupting the data transmission in the first time unit indicated by the second information has higher priority than the action of transmitting the first transmission in the first time unit notified by the first information.

In one implementation of this aspect, the at least one time domain symbol is included in the first time cell, and the time length of the at least one time domain symbol may be smaller than the time length of the first time cell, that is, collisions occur only on a portion of the time domain symbols of the first time cell; the time length of the at least one time domain symbol may also be equal to the time length of the first time cell, i.e. collisions occur on all time domain symbols of the first time cell. For example, the first time unit is a mini slot including X < S time domain symbols, and the number of symbols of the at least one time domain symbol may be less than or equal to X.

It should be understood that the at least one time domain symbol may be all time domain symbols configured or indicated by the network device on the full slot where the first time unit is located, which are not used for the terminal device to perform uplink data information transmission, or may also be a part of all time domain symbols configured or indicated by the network device on the full slot where the first time unit is located, which are not used for the terminal device to perform uplink data information transmission, without limitation.

In a specific implementation of the foregoing scheme, the terminal device does not limit the application of the receiving sequence of the first information and the second information, for example, the terminal device may receive the first information first and then receive the second information, may receive the second information first and then receive the first information, and may receive the first information and the second information simultaneously, which is not limited in this scheme.

Further, the at least one data transmission is temporally contiguous, and the at least one data transmission is temporally contiguous with the first data transmission. The at least one data transmission being consecutive in time means: the at least one time unit carrying the at least one data transmission is consecutive in the time domain or consecutive in the sequence number of the time unit, similar to the definition of the preceding time consecutive K time units. The at least one data transmission being consecutive in time to the first data transmission means: the at least one time unit carrying the at least one data transmission and the first time unit carrying the first data transmission are continuous in time domain or continuous in sequence number of the time unit, similar to the definition of the previous K time units with continuous time; in other words, the at least one data transmission is the at least one data transmission immediately following the first time unit.

Considering that, when transmission is interrupted due to a collision, a data transmission (the at least one data transmission) that is time-continuous after a time element (a first time element) at which transmission is interrupted and does not include a DMRS cannot be correctly demodulated due to impairment of correlation with the DMRS before the interruption occurs, for example, the correlation of the 3 rd data transmission in fig. 4(a) with the DMRS in the first data transmission is impaired; however, for a data transmission that is subsequent to and time-discontinuous from the time unit in which the transmission is interrupted, e.g., the 5 th data transmission in fig. 4(a), there may be other DMRS configured or indicated by the network device before it, e.g., the DMRS in the 4 th data transmission in fig. 4(a), which may be used for demodulation of the 5 th data transmission. The present invention may therefore further define that data transmissions of the at least one data transmission are consecutive in time, and the first data transmission in which the collision occurred and the subsequent at least one data transmission are consecutive in time, so that when the collision occurs, the terminal device may additionally consider the processing of the subsequent at least one data transmission, such as discarding, sending an additional DMRS, or deferring.

It should be noted that, in a specific implementation of the scheme, the second information is used to configure or indicate that at least one time domain symbol in the first time unit is not used for the terminal device to perform uplink data information transmission, and a time domain symbol in the at least one time domain symbol notified by the second information is any one of the following: a downlink symbol, a flexible symbol, or a time domain symbol for transmitting an SRS. At least one of the following conditions is included:

case 1: the second information is used for configuring or indicating that the at least one time domain symbol is a downlink symbol.

In a specific embodiment, the second information is a high layer signaling or a Remaining Minimum System Information (RMSI) signaling for configuring the at least one time domain symbol as a downlink symbol. Specifically, the second information includes higher layer signaling 'tdd-UL-DL-Configuration Common', or 'tdd-UL-DL-Configuration-Common 2', or 'tdd-UL-DL-Configuration decoded'.

Optionally, the second information is DCI information indicating that the at least one time domain symbol is a downlink symbol. Specifically, the second information includes Slot Format Indicator (SFI) information indicating a time domain symbol format. More specifically, the SFI information is DCI format 2_0, and is scrambled by an SFI radio network temporary identifier (SFI-RNTI).

Case 2: the second information is used for configuring or indicating that the at least one time domain symbol is a flexible (flexible) symbol.

Similar to the description of the downlink symbol in case 1, the second information configuring or indicating that the at least one time domain symbol is a flexible symbol may be a higher layer signaling or an RMSI signaling, or may be DCI information.

Case 3: the second information is used for configuring or indicating that the at least one time domain symbol is a time domain symbol for transmitting an SRS.

Optionally, the at least one time domain symbol is a time domain symbol configured by the network device or indicating the terminal device to send the SRS. The SRS that is configured by the network device and transmitted by the terminal device is also referred to as a periodic SRS or a semi-persistent (semi-persistent) SRS, and the SRS that is indicated by the network device and transmitted by the terminal device is also referred to as an aperiodic SRS. At this time, the terminal device needs to transmit the higher priority SRS, and the transmission of the data information is interrupted on the at least one time domain symbol.

Optionally, the at least one time domain symbol configures, for the network device, a time domain symbol used for the terminal device served by the network device to transmit the SRS, but the network device does not configure or instruct the terminal device to transmit the SRS on the at least one time domain symbol. That is to say, the at least one time domain symbol configures, for the network device, a time domain symbol in which other terminal devices other than the terminal device transmit SRS, and in order to avoid interference caused by data information transmitted by the terminal device on the at least one time domain symbol to SRS signals of other terminal devices, the terminal device interrupts uplink data information transmission in the at least one time domain symbol to avoid.

Case 4: the second information is further used to configure or indicate that a part of the at least one time domain symbol is on a first slot and another part of the at least one time domain symbol is on a second slot, which is a next full slot of the first slot. In other words, the second information is used to configure or indicate that a part of the time domain symbols in the first time unit are on a first slot and another part of the time domain symbols in the first time unit are on a second slot. It should be understood that the first slot in this scheme is also referred to as a first full slot and the second slot in this scheme is also referred to as a second full slot.

When a time unit corresponding to a certain data transmission of the K data transmissions, i.e., a first time unit, is configured or scheduled to cross a boundary of two complete time slots (i.e., a part of time domain symbols of the time unit corresponding to the data transmission is on a previous complete time slot, and another part of time domain symbols is on a subsequent complete time slot), scrambling is complicated due to different scrambling codes corresponding to different complete time slots, so that the data transmission is usually discarded or delayed without performing the data transmission that crosses the boundary of two complete time slots. Therefore, this first time unit is also referred to as a time unit not used for upstream data transmission.

Optionally, the second information is used to configure or indicate that a part of the at least one time domain symbol (or the first time unit) is on the first time slot, and another part of the at least one time domain symbol (or the first time unit) is on the second time slot, it may also be understood that the second information is the first information, or the first information includes the second information, since the first information is used to configure or schedule the K data transmissions, where information notifying time domain resources of each of the K data transmissions is already included, so that no additional information is needed to notify the terminal device that the first time unit or the at least one time domain symbol spans two complete time slot boundaries. At this time, step S103 hereinafter is also referred to as: and processing the data information according to the first information.

That is to say, a terminal device receives first information sent by a network device, where the first information is used to notify the terminal device to perform K data transmissions on K time units that are consecutive in time, where the K time units correspond to the K data transmissions in a one-to-one manner, the K data transmissions include a first data transmission and at least one data transmission after the first data transmission, the at least one data transmission is a data transmission that is signaled and does not include a demodulation reference signal DMRS, a first time unit of the K time units includes at least one time domain symbol, a part of the at least one time domain symbol (or the first time unit) is on a first slot, and another part of the at least one time domain symbol (or the first time unit) is on a second slot, the first time unit is a time unit corresponding to the first data transmission in the K time units; and the terminal equipment processes the data information according to the first information. The way of the terminal device performing data information processing according to the first information is the same as the way of the terminal device performing data information processing according to the first information and the second information in step S103 described later.

Fig. 6 is a schematic diagram of a first time unit crossing a complete time slot boundary provided in the present application, as shown in fig. 6, a first information configuration or scheduling terminal device performs data transmission with K equal to 6, where data transmission #1 and data transmission #4 include DMRSs, other data transmissions do not include DMRSs, data transmission #1 is carried on a first time slot, data transmissions #3 to #6 are carried on a second time slot, a part of time domain symbols in data transmission #2 is carried on the first time slot, and another part of time domain symbols is carried on the second time slot, that is, data transmission #2 crosses two time slot boundaries. In this case, the first data transmission is data transmission # 2; at least one data transmission is data transmission #3 following data transmission #2 of the K data transmissions.

S103: and the terminal equipment processes the data information according to the first information and the second information.

For the terminal device, the data information processing according to the first information and the second information comprises: the terminal device generates a data packet (for example, a first data packet) corresponding to any data transmission in the K data transmissions according to the first information, and places the data packet corresponding to any data transmission into a buffer. The terminal device determines, according to the second information, which data transmission of the K data transmissions is performed or which data transmission is correspondingly discarded (e.g., implementation method 1 or implementation method 2 below), or determines a sending timing of a part of the data transmission of the K data transmissions (e.g., implementation method 3 below).

If the terminal device determines to perform L data transmissions of the K data transmissions (correspondingly discard other data transmissions except the L data transmissions of the K data transmissions) according to the second information, and L is greater than zero and smaller than K, the processing of the data information by the terminal device further includes: the L data transmissions of the K data transmissions are performed.

If the terminal device determines not to perform any data transmission in the K data transmissions according to the second information, or discards all data transmissions in the K data transmissions, for a data packet corresponding to any data transmission in the K data transmissions, the processing of the data information by the terminal device further includes: and the terminal equipment reserves the data packet corresponding to any data transmission in the cache. For example, the terminal device may retransmit the data packet in the next transmission opportunity.

And for the network equipment, receiving the data information from the terminal equipment.

It should be understood that the data information is data information sent by the terminal device according to the first information and the second information.

Optionally, the data information received by the network device includes at least one data transmission in the K data transmissions, and the at least one data transmission in the K data transmissions is a data transmission performed by the terminal device according to the first information and the second information.

Optionally, the data information received by the network device includes other data transmissions other than the K data transmissions, for example, if the terminal device discards all data transmissions in the K data transmissions, the terminal device may buffer a corresponding data packet (for example, a first data packet) in the K data transmissions, and perform the corresponding data packet in the K data transmissions again in a next transmission opportunity (for example, other time units after the K time units), and the data information received by the network device includes the data transmission corresponding to the next transmission opportunity.

It should be understood that any data transmission included in the data information received by the network device is defined as for any data transmission in the K data transmissions, and is not described in detail again.

In this step, the second information informs that at least one time domain symbol is not used for the terminal device to perform the data information transmission, and in this scheme, the data transmission to be performed needs to be processed in combination with the first information and the second information, unlike the prior art, the data transmission that is continuous over K time units in this scheme includes at least one data transmission that includes a DMRS (i.e., the at least one data transmission), and the network device may perform channel estimation through the DMRS in the data transmission that is earlier than the at least one data transmission and that includes the DMRS, and use the channel estimation for information demodulation of the at least one data transmission, thereby reducing DMRS overhead, and further saving resources for data information transmission, thereby achieving the purpose of enhancing information transmission efficiency and transmission reliability. In addition, when the at least one time domain symbol which is not used and notified by the network device by the first data transmission and the collision is considered, the terminal device considers the first time unit which is collided and also considers the demodulation performance of the at least one subsequent data transmission which does not include the DMRS when performing data transmission according to the first information and the second information.

As mentioned above, the action of interrupting the transmission of the data information on at least one symbol of the first time unit, which is indicated by the second information, has a higher priority than the action of performing the first transmission on the first time unit, which is notified by the first information, and based on this criterion, how the terminal device performs the data information transmission according to the first information and the second information includes the following three specific implementation methods.

The implementation method 1: the terminal device discards the first data transmission and the at least one data transmission.

The solution means that the terminal device discards the first data transmission and the at least one data transmission when transmitting data in K time units based on the first information. Or, when the terminal device performs the K data transmissions, the first data transmission and the at least one data transmission are discarded. Or, for the first time unit, the terminal device discards the corresponding first data transmission on the first time unit, or the terminal device does not perform the first data transmission on the first time unit; for any time unit in the time unit corresponding to the at least one data transmission notified by the first information, the terminal device discards the corresponding data transmission in the any time unit, or in other words, the terminal device does not perform the corresponding data transmission in the any time unit.

It should be understood that, after the terminal device discards the first data transmission in the first time unit or discards the at least one data transmission in the time unit corresponding to the at least one data transmission, the terminal device may send the first data transmission or the at least one data transmission in other time units, for example, other time units after the K time units.

For the network device, the first data transmission and the at least one data transmission are not included in the received data information. Wherein the first data transmission and the at least one data transmission are data transmissions discarded by the terminal device. Further, the data information received by the network device is at least one data transmission in the K data transmissions, and the first data transmission and the at least one data transmission are not included in the at least one data transmission in the K data transmissions.

The data transmission performed by the terminal device on the K time units according to the first information means that, for any data transmission that is not discarded in the K data transmissions, for example, any data transmission in the K data transmissions except the first data transmission and the at least one data transmission, the terminal device performs the any data transmission that is not discarded on the corresponding time unit. The non-discarded data transmission refers to data transmission in which the network device does not notify that the time domain symbol in the corresponding time unit is not used for uplink data information transmission.

In consideration of the prior art, when multiple repeated data transmissions configured or scheduled by the network device collide with a time domain symbol configured by the network device and not used for uplink data transmission, the behavior of the terminal device is to discard the data transmission carried by the colliding time cell. The first data transmission can be dropped, reusing the principles of the prior art. In addition, considering that the at least one data transmission does not contain a DMRS, in case that the first data transmission is interrupted, in combination with problem 1 described in the prior art drawbacks, the at least one data transmission loses correlation with the DMRS that is earlier than the at least one data transmission due to the radio frequency interruption, the DMRS that is earlier than the at least one data transmission cannot be used for data information demodulation of the at least one data transmission any more, and the terminal device cannot guarantee that the network device can demodulate correctly even if the at least one data transmission is transmitted. Therefore, the terminal device may discard the at least one data transmission to avoid resource waste caused by sending the data transmission that cannot be demodulated and interference caused by other information sent on the same resource by the local cell or the neighboring cell. That is, in this scheme, the terminal device discards, in addition to the data transmission that has collided, the data transmission that has collided and the subsequent data transmission without the DMRS.

It should be understood that the terminal device discards one data transmission (for example, the first data transmission, or any one of the at least one data transmission) means that the terminal device does not perform the data transmission or skips (skip) the data transmission during the K data transmissions or at least one of the K data transmissions according to the first information. Where drop may also be referred to as stop or cancel or ignore or interrupt. The terminal device may also be called as discarding the data transmission, where the terminal device discards a PUSCH corresponding to the data transmission or does not send a PUSCH corresponding to the data transmission.

It should be understood that the first data transmission may be a data transmission that includes a DMRS, or may be a data transmission that does not include a DMRS.

In the specific implementation of the scheme, the following situations are included:

in a first case, if all of the K data transmissions subsequent to the first data transmission are data transmissions that do not include a DMRS, then the at least one data transmission is all of the K data transmissions subsequent to the first data transmission. Wherein all data transmissions subsequent to the first data transmission are data transmissions that do not include a DMRS, in particular to being notified by the network device of data transmissions that do not include a DMRS.

This means that the at least one data transmission is all data transmissions after the first data transmission of the K data transmissions when all data transmissions after the first data transmission of the K data transmissions do not contain a DMRS.

That is, after the collision occurs, if all data transmissions following the first data transmission of the K data transmissions are data transmissions (configured or indicated by the network device) that do not include the DMRS, the terminal device needs to discard the first data transmission and all data transmissions of the K data transmissions following the first data transmission because no DMRS is used for demodulation of the subsequent data transmission.

In this case, the data information received by the network device does not include the first data transmission and the at least one data transmission, that is, the first data transmission and the at least one data transmission are data transmissions discarded by the terminal device.

In a second case, if there is a second data transmission including a DMRS that is closest to the first data transmission after the first data transmission among the K data transmissions, the at least one data transmission is all data transmissions between the first data transmission and the second data transmission among the K data transmissions. Wherein the second data transmission comprising the DMRS specifically refers to being informed by the network device of the second data transmission comprising the DMRS.

The meaning of this scheme is that if, of the K data transmissions, there is at least one data transmission that includes a DMRS after a first data transmission, then at least one data transmission is all of the K data transmissions between the first data transmission and a second data transmission that is the closest data transmission to the first data transmission of the at least one data transmission that includes a DMRS.

In this case, for the terminal device, in the process of performing the K data transmissions or at least one of the K data transmissions, when transmitting to the first data transmission, the terminal device discards the first data transmission and discards at least one data transmission thereafter, and resumes the second data transmission (for example, when the second data transmission is the last data transmission of the K data transmissions); or, starting from the second data transmission, resuming the second data transmission and data transmission subsequent to the second data transmission in the K data transmissions. That is, the terminal device resumes subsequent data transmission of the K data transmissions starting from the second data transmission (for example, when other data transmissions are included after the second data transmission in the K data transmissions).

The meaning of the foregoing solution is that the second data transmission notified by the first information corresponds to a second time unit, and the terminal device performs the second data transmission on the second time unit, or resumes the second data transmission and the data transmission subsequent to the second data transmission in the K data transmissions from the second time unit.

It should be understood that resuming the second data transmission described above may also be referred to as performing the second data transmission. The resuming of the second data transmission and the data transmission after the second data transmission in the K data transmissions may also be referred to as performing the second data transmission and the data transmission after the second data transmission in the K data transmissions.

In this case, for the network device, the received data information does not include the first data transmission and the at least one data transmission, and the data information includes the second data transmission or includes the second data transmission and a data transmission subsequent to the second data transmission of the K data transmissions.

Optionally, in an implementation of the foregoing scheme, there is a special case, if the first data transmission is a starting data transmission in the K data transmissions, and all data transmissions after the first data transmission in the K data transmissions are data transmissions that do not include the DMRS, the terminal device does not perform any data transmission in the K data transmissions. That is, the K data transmissions are all discarded, or the terminal device does not perform data transmission over the K time units. In the K data transmissions, all data transmissions after the first data transmission are data transmissions not including the DMRS, specifically, all data transmissions after the first data transmission in the K data transmissions are data transmissions not including the DMRS configured or indicated by the network device.

Fig. 7 is a schematic diagram of discarding the first data transmission and at least one data transmission provided in the present application, and as shown in (a) of fig. 7, the first information configures or schedules the terminal device to send K ═ 6 data transmissions in one complete time slot, where DMRSs are included in data transmission #1 and data transmission #4, and DMRSs are not included in other data transmissions. The last symbol of the second information configuration data transmission #4 is the "downlink" symbol. In this case, the first data transmission is data transmission # 4; since there is no data transmission containing the DMRS after the data transmission #4, at least one data transmission is all data transmissions after the data transmission #4 of the K data transmissions, i.e., data transmission #5, data transmission # 6. The terminal apparatus discards data transmissions #4 to # 6.

That is, after the collision occurs, if at least one data transmission (configured or indicated by the network device) including the DMRS is included in the data transmission after the first data transmission in the K data transmissions, the terminal device transmits a new DMRS after the interruption, so that the DMRS has correlation with the data transmission after the new DMRS and can be used for demodulation. Therefore, the terminal device discards the first data transmission and the data transmission between the first data transmission and the second data transmission, and continues (or resumes) the subsequent (or remaining) data transmission in the K data transmissions from the second data transmission, wherein the second data transmission is the data transmission which is closest to the first data transmission and contains the DMRS after the first data transmission. Here, the DMRS included in the second data transmission configures or instructs the network device to transmit the DMRS in the second data transmission.

The recovering, by the terminal device, of the subsequent data transmission in the K data transmissions from the second data transmission means that the recovering of the subsequent data transmission in the K data transmissions from the start time of the second data transmission in the K data transmissions, that is, the recovering includes performing the second data transmission.

It is to be understood that all data transmissions between the first data transmission and said second data transmission refer to all data transmissions between the end time of the first data transmission and the start time of the second data transmission, excluding the first data transmission and also excluding the second data transmission.

As shown in fig. 7 (b), the first information configures or schedules the terminal device to transmit K ═ 6 data transmissions in one full time slot, where DMRSs are included in data transmission #1 and data transmission #4, and DMRSs are not included in other data transmissions. The second information configures the last symbol of data transmission #1 to be a "downlink" symbol. In this case, the first data transmission is data transmission # 1; since data transmission #4 following data transmission #1 contains DMRS and is closest to data transmission #1, the second data transmission is data transmission #4, and at least one data transmission is all data transmissions between data transmission #1 and data transmission #4 among the K data transmissions, i.e., data transmission #2, data transmission # 3. The terminal device discards the data transmissions #1 to #3 and resumes sending the remaining data transmissions of the K data transmissions starting with data transmission # 4.

In the implementation of the above scheme, it should be noted that: the terminal device discards the first data transmission, which may include the following two discarding manners:

discarding mode 1: and the terminal equipment stops the first data transmission from the starting moment of the first data transmission.

That is, when the first uplink transmission indicated by the first information configuration or the at least one time domain symbol not used for uplink data information transmission is collided on the first time unit, the terminal device discards the entire first data transmission regardless of whether the start time of the collided at least one time domain symbol is equal to or earlier than the start time of the first time unit or later than the start time of the first time unit. The discarding mode 1 has the advantage that even if the non-collided time domain symbols in the first data transmission are occupied to transmit data information, demodulation failure can be caused, so that the first data transmission is discarded completely, and resource waste can be avoided.

For example, as shown in (a) in fig. 7, the collision occurs on the mini slot corresponding to data transmission #4, but the "downlink" time domain symbol configured by the network device is located in the last symbol of the mini slot corresponding to data transmission #4, and the first two symbols of the mini slot corresponding to data transmission #4 do not collide, at this time, the terminal device may also discard the entire data transmission #4, that is, discard the data transmission #4 from the starting time of the mini slot corresponding to data transmission # 4.

Discarding mode 2: the terminal equipment stops the first data transmission from the at least one time domain symbol. Or, when the terminal device transmits the first data transmission to the start time of the at least one time domain symbol, the terminal device stops transmitting the first data transmission. That is, if the start time of the at least one time domain symbol is later than the start time of the first data transmission, the terminal device sends a portion between the start time of the first data transmission and the start time of the at least one time domain symbol, and stops the first data transmission from the start time of the at least one time domain symbol.

That is to say, when a first uplink transmission indicated by a first information configuration or a first information configuration and at least one time domain symbol indicated by a second information configuration or a second information configuration not used for uplink data information transmission collide with each other on a first time unit, if a start time of the at least one time domain symbol is later than the start time of the first time unit, the terminal device still sends corresponding data information in the first data transmission to the start time of the at least one time domain symbol on the first time unit, and then stops sending the first data transmission. The discarding mode 2 has the advantages that the data information sent by the non-collided time domain symbol in the first data transmission is successfully demodulated with a certain probability, and the transmission reliability is improved.

Fig. 8 is a schematic diagram of a second discarding method provided in this application, and as shown in fig. 8, when a collision occurs on a mini slot corresponding to data transmission #4, but a "downlink" time domain symbol configured by a network device is located in a last symbol of the mini slot corresponding to the data transmission #4, a terminal device sends data and DMRS information on the first two time domain symbols in the data transmission #4, but does not send the last symbol of the mini slot corresponding to the data transmission # 4.

In a specific implementation of the scheme of the present application, it should be understood that any one time domain symbol in a time unit corresponding to at least one data transmission is not signaled as being not used for uplink data information transmission by the terminal device.

The signaling in the scheme refers to signaling of a network device, and may be explicit or implicit to notify a terminal device, and the meaning of the scheme is that any time domain symbol in at least one data transmission is not configured by the network device or indicates that it is not used for the terminal device to perform uplink data information transmission.

Optionally, the terminal device does not receive the signaling that is sent by the network device and used for notifying that the time domain symbol in the at least one data transmission is not used for the terminal device to perform uplink data information transmission.

Optionally, the terminal device receives the signaling sent by the network device, and the signaling does not notify that the time domain symbol in the at least one data transmission is not used for the terminal device to perform uplink data information transmission.

Specifically, the signaling is referred to as second signaling. The definition of the second signaling is similar to the second information and is not described again.

For example, the terminal device does not receive the configuration sent by the network device or a signaling indicating that any one time domain symbol in the time unit corresponding to the at least one data transmission is a downlink symbol, a flexible symbol, or a time domain symbol for sending the SRS. Or the terminal device does not receive the configuration sent by the network device or indicates that part of the time domain symbols in the time unit corresponding to the at least one data transmission are on the first time slot, and the part of the time domain symbols are on the second time slot.

That is, although the time domain symbol configured or indicated by the network device for the terminal device to perform uplink data information transmission collides with the first data transmission, but does not collide with the at least one data transmission, since the dropping of the first data transmission causes radio frequency interruption, the correlation between the DMRS before the at least one data transmission and the at least one data transmission deteriorates, the DMRS cannot be used for demodulation of the at least one data transmission, and thus the at least one data transmission after the first data transmission also needs to be dropped.

In addition, considering that a radio frequency interruption for a short time (e.g., a time domain symbol having a time length of 1) may not cause a phase jump, in this case, even if the first data transmission is discarded due to a collision, since there is still correlation between the at least one data transmission and the DMRS before the at least one data transmission, the terminal device may resume transmission of the at least one data transmission, so that the network device may correctly demodulate the at least one data transmission with the DMRS before the interruption occurred.

Therefore, in a specific implementation of the scheme, if the time length of the at least one time domain symbol notified by the second information is greater than a first threshold, the first data transmission and the at least one data transmission are discarded. Or, if the time length of the at least one time domain symbol notified by the second information is greater than or equal to a first threshold, discarding the first data transmission and the at least one data transmission.

Or, when the time length of the first time unit is greater than a first threshold, the terminal device discards the first data transmission and the at least one data transmission. Or, when the time length of the first time unit is greater than or equal to a first threshold, the terminal device discards the first data transmission and the at least one data transmission. Specifically, the first threshold may be predefined or configured by the network device through higher layer signaling, for example, the first threshold is Y time domain symbols, and Y is 1,2,3 ….

That is, when the time length of the first time cell or the at least one time domain symbol in which the collision occurred is relatively long, the phase correlation cannot be maintained, and the terminal device may discard the first data transmission and the at least one data transmission.

On the other hand, if the time length of the at least one time domain symbol notified by the second information is not greater than the first threshold, the first data transmission is discarded, and the at least one data transmission is performed. Or, if the time length of the at least one time domain symbol notified by the second information is smaller than the first threshold, discarding the first data transmission and performing the at least one data transmission.

Or, when the time length of the first time unit is not greater than a first threshold, the terminal device discards the first data transmission and performs the at least one data transmission. Or, when the time length of the first time unit is smaller than a first threshold, the terminal device discards the first data transmission and performs the at least one data transmission.

In this case, the data information received by the network device does not include the first data transmission, and the data information received by the network device includes the at least one data transmission, that is, the first data transmission is a data transmission discarded by the terminal device.

It should be understood that the terminal device discards the first data transmission, specifically, the terminal device discards the first data transmission on the first time unit, or the terminal device does not perform the first data transmission on the first time unit.

It should be understood that the terminal device discards the at least one data transmission, specifically, the terminal device discards the at least one data transmission on the time unit corresponding to the at least one data transmission of the first information notification, or the terminal device does not perform the at least one data transmission on the time unit corresponding to the at least one data transmission of the first information notification.

It should be understood that the terminal device performs the at least one data transmission, specifically, the terminal device performs the at least one data transmission on the time unit corresponding to the at least one data transmission notified by the first information.

That is to say, when the time length of the first time unit or the at least one time domain symbol in which the collision occurs is relatively short, the phase correlation is not greatly affected by the interruption, and the DMRS before the interruption may still be used to demodulate the at least one data transmission, so that the terminal device may discard the first data transmission on the first time unit in which the collision occurs, but may perform the at least one data transmission after the first data transmission according to the first information.

Fig. 9 provides a method for determining whether to discard subsequent data transmissions without DMRS based on a length of time of an interruption; as shown in (a) of fig. 9, the first information configuring or scheduling terminal device transmits K ═ 6 data transmissions in one full time slot, where DMRSs are included in data transmission #1 and data transmission #4, DMRSs are not included in other data transmissions, time lengths of data transmission #1 and data transmission #4 are 2 time domain symbols, time lengths of other data transmissions are 1 time domain symbol, and the first threshold is 1 time domain symbol. The symbol where the second information configuration data transmission #5 is located is a "downlink" symbol. In this case, the first data transmission is data transmission # 5; at least one data transmission is data transmission # 6. Considering that the first time unit in which the interruption occurs is 1 symbol, the length is not greater than the first threshold, so the terminal device discards the data transmission #5 and resumes the transmission of the data transmission # 6.

As shown in (b) of fig. 9, the first information configuring or scheduling terminal device transmits K ═ 6 data transmissions in one full time slot, where DMRSs are included in data transmission #1 and data transmission #4, DMRSs are not included in other data transmissions, time lengths of data transmission #1 and data transmission #4 are 3 time domain symbols, time lengths of other data transmissions are 2 time domain symbols, and the first threshold is 1 time domain symbol. One symbol in the second information configuration data transmission #5 is a "downlink" symbol. In this case, the first data transmission is data transmission # 5; at least one data transmission is data transmission # 6. Considering that the first time unit in which the interruption occurs is 2 symbols, the length is greater than the first threshold, and thus the terminal device discards data transmission #5 and data transmission # 6.

It should be noted that, in view of the problem 2 described in the prior art, when the first data transmission that is interrupted contains the DMRS, even if the at least one data transmission is recovered, since the first data transmission may not be preceded by other data transmissions containing the DMRS (for example, the first data transmission is the initial data transmission of the K data transmissions), or even if the first data transmission is preceded by other data transmissions containing the DMRS, the longer time distance between the at least one data transmission and the DMRS earlier than the first data transmission may result in poor time correlation, so that the at least one data transmission cannot be successfully demodulated. Thus, the terminal device further determines whether to discard the subsequent at least one data transmission based on whether the DMRS is contained in the first data transmission (configured or indicated by the network device).

When the first data transmission does not include the DMRS, the terminal device discards the first data transmission and performs (or recovers) the at least one data transmission. Alternatively, when the DMRS is not included in the at least one time domain symbol, the terminal device discards the first data transmission and performs (or recovers) the at least one data transmission. The terminal device discards the first data transmission, namely, the terminal device discards the corresponding first data transmission in the first time unit; the terminal device performs the at least one data transmission, that is, the terminal device performs the at least one data transmission in the time unit corresponding to the at least one data transmission notified by the first information.

In this scenario, the first data transmission is not included in the data information received by the network device, but the at least one data transmission is included in the data information. The first data transmission is data transmission discarded by the terminal equipment. Further, the data information received by the network device is at least one data transmission of the K data transmissions, and the at least one data transmission of the K data transmissions does not include the first data transmission, but the at least one data transmission of the K data transmissions includes the at least one data transmission.

On the other hand, when the first data transmission contains the DMRS, the terminal device discards the first data transmission and the at least one data transmission. Or, when the DMRS is included in the at least one time domain symbol, the terminal device discards the first data transmission and the at least one data transmission, and the network device does not include the first data transmission and the at least one data transmission in the received data information. Wherein the first data transmission and the at least one data transmission are data transmissions discarded by the terminal device. Further, the data information received by the network device is at least one data transmission of the K data transmissions, and the at least one data transmission of the K data transmissions does not include the first data transmission and the at least one data transmission.

Fig. 10 is a schematic diagram of determining whether to discard a subsequent data transmission according to whether a DMRS is included in a first data transmission, where, as shown in fig. 10, a first information configures or schedules a terminal device to send K ═ 6 data transmissions in a complete time slot, where DMRSs are included in data transmission #1 and data transmission #4, and DMRSs are not included in other data transmissions. In fig. 10 (a), the last symbol in the second information configuration data transmission #1 is a "downlink" symbol. In this case, the first data transmission is data transmission # 1; the at least one data transmission is data transmission #2 and data transmission # 3. Considering that the first data transmission in which the interruption occurred contains DMRS, the terminal device discards data transmission #2 and data transmission #3 in addition to data transmission #1 because discarding data transmission #1 results in no DMRS for demodulation of subsequent data transmission #2 and data transmission # 3. In fig. 10 (b), the first symbol in the second information configuration data transmission #2 is a "downlink" symbol. In this case, the first data transmission is data transmission # 2; at least one data transmission is data transmission # 3. Considering that the first data transmission in which the interruption occurred does not include the DMRS, the DMRS still present in the data transmission #1 after discarding the data transmission #2 is used for demodulation of the subsequent data transmission #3, and thus the terminal device discards the data transmission #2 but resumes transmission of the data transmission # 3.

In a specific implementation of the foregoing solution, when the time length of the first time unit is not greater than (or less than) a first threshold and the first data transmission does not include the DMRS, the terminal device discards the first data transmission and performs the at least one data transmission. Or, when the time length of the at least one time domain symbol is not greater than (or less than) a first threshold and the DMRS is not contained in the at least one time domain symbol, the terminal device discards the first data transmission and performs the at least one data transmission. In this case, the data information received by the network device does not include the first data transmission, and the data information received by the network device includes the at least one data transmission, that is, the first data transmission is a data transmission discarded by the terminal device.

On the other hand, when the time length of the first time unit is greater than (or equal to or greater than) the first threshold and the DMRS is included in the first data transmission, the terminal device discards the first data transmission and the at least one data transmission. Alternatively, the terminal device discards the first data transmission and the at least one data transmission when a time length of at least one time domain symbol is greater than (or greater than or equal to) a first threshold and the DMRS is contained in the at least one time domain symbol. In this case, the data information received by the network device does not include the first data transmission and the at least one data transmission, that is, the first data transmission and the at least one data transmission are data transmissions discarded by the terminal device.

The implementation method 2 comprises the following steps: the terminal equipment discards the first data transmission; the at least one data transmission is made, and a DMRS (referred to as a first DMRS) is transmitted in a starting data transmission of the at least one data transmission.

The implication of this implementation is that the terminal device discards the collided data transmission, but continues (or recovers) the subsequent data transmission, and additionally transmits the DMRS in the initial data transmission of the subsequent data transmission, wherein the first DMRS transmitted by the terminal device in the initial data transmission of the at least one data transmission is not the DMRS that the network device signaled (e.g., the first signaling) to the terminal device, that is, the network device does not notify the terminal device to transmit the DMRS in the initial data transmission of the at least one data transmission, and the first DMRS is additionally transmitted by the terminal device.

Further, the first DMRS sent by the terminal device in the initial data transmission of the at least one data transmission is a preamble DMRS, that is, the first DMRS is carried on the earliest at least one time-domain symbol in a time unit corresponding to the initial data transmission.

That is, the terminal device discards the first data transmission and makes the at least one data transmission, and the terminal device sends the first DMRS in a starting data transmission of the at least one data transmission. Alternatively, the terminal device transmits the first DMRS prior to a starting data transmission of the at least one data transmission.

For the network device, the received data information does not include the first data transmission but includes the at least one data transmission. The first data transmission is data transmission discarded by the terminal equipment. Further, the data information received by the network device is at least one data transmission of the K data transmissions, and the at least one data transmission of the K data transmissions does not include the first data transmission, but the at least one data transmission of the K data transmissions includes the at least one data transmission. In addition, the at least one data transmission received by the network device includes a first DMRS that is a DMRS that was not notified by the network device of a transmission in the at least one data transmission.

It should be understood that the terminal device performing the at least one data transmission refers to performing the at least one data transmission on the time unit corresponding to the at least one data transmission notified by the first information.

In case the at least one data transmission does not collide with a time domain symbol configured or indicated by the network device not to be used for upstream data transmission, the at least one data transmission may be resumed after dropping the first data transmission to avoid wasting resources. However, considering that the network device configures or instructs the terminal device not to include the DMRS in the at least one data transmission, in order to continue to occupy resources for the remaining at least one data transmission and to ensure demodulation performance of the at least one data transmission after the interruption, an additional DMRS may be transmitted in or before the at least one data transmission.

Wherein the DMRS is an additionally transmitted DMRS because the terminal device is not configured or indicated by the network device to transmit the DMRS in the at least one data transmission (or the initial data transmission in the at least one data transmission), or the network device is configured or indicated to not include the DMRS in the at least one data transmission (or the initial data transmission in the at least one data transmission).

Further, the terminal device punctures (opens) a data symbol in a starting data transmission of the at least one data transmission to transmit the first DMRS.

Optionally, the terminal device sends the first DMRS in a starting data transmission of the at least one data transmission, and data symbols in the starting data transmission of the at least one data transmission are multiplexed with the first DMRS in a rate matching (ratescheduling) manner.

Further, when the terminal device transmits a first DMRS prior to a starting data transmission of the at least one data transmission, the terminal device transmits the first DMRS on a time domain symbol that is most recent prior to the starting data transmission of the at least one data transmission. That is, the first DMRS is immediately followed by a starting data transmission of the at least one data transmission.

Fig. 11 is a schematic diagram of transmitting an additional DMRS after discarding a first data transmission according to the present application, where, as shown in fig. 11, a first information configures or schedules a terminal device to transmit K ═ 6 data transmissions in a complete time slot, where DMRSs are included in data transmission #1 and data transmission #4, and DMRSs are not included in other data transmissions, as shown in (a) in fig. 11. In fig. 11 (b) and (c), the second symbol in the first time unit where the second information configuration data transmission #4 is located is a "downlink" symbol. In this case, the first data transmission is data transmission #4, and at least one data transmission is data transmission #5 and data transmission # 6; the terminal device discards the data transmission #4 due to the collision, and resumes the transmission of the data transmission #5 and the data transmission # 6. In fig. 11 (b), the terminal device transmits a DMRS of xin on the first time-domain symbol in data transmission #5 to facilitate demodulation of subsequent data transmission. In fig. 11 (c), the terminal device transmits the DMRS on the last time-domain symbol prior to data transmission #5 to facilitate demodulation of subsequent data transmissions.

Further, in a specific implementation of the scheme, whether to transmit the additional DMRS may be determined according to a length of the first data transmission/at least one time element, where the additional DMRS is necessarily required to be transmitted. In a similar way to the first implementation method, considering that a radio frequency interruption in a short time (e.g., a time domain symbol with a time length of 1) may not cause a phase jump, in this case, even if the first data transmission is discarded due to a collision, the terminal device may recover the at least one data transmission because there is still correlation between the at least one data transmission and the DMRS before the at least one data transmission, without adding a new DMRS to the at least one data transmission, and the network device may correctly demodulate the at least one data transmission using the DMRS.

That is, in a specific implementation of the scheme, if the time length of the at least one time domain symbol notified by the second information is greater than (or greater than or equal to) the first threshold, the terminal device discards the first data transmission, performs the at least one data transmission, and transmits the DMRS in a starting data transmission of the at least one data transmission; or, if the time length of the first time unit is greater than (or greater than or equal to) the first threshold, the terminal device discards the first data transmission, performs the at least one data transmission, and transmits the DMRS in a starting data transmission of the at least one data transmission.

Specifically, the first threshold may be predefined or configured by the network device through higher layer signaling, for example, the first threshold is Y time domain symbols, and Y is 1,2,3 ….

That is, when the time length of the first time element or the at least one time domain symbol in which the collision occurs is relatively long, the phase correlation cannot be maintained, the terminal device discards the first data transmission, and when the subsequent at least one data transmission is recovered, a new DMRS needs to be added to the initial data transmission, so that the network device can correctly demodulate the at least one data transmission with the DMRS.

On the other hand, if the time length of the at least one time domain symbol notified by the second information is not greater than (or less than) the first threshold, the terminal device discards the first data transmission and performs the at least one data transmission; or, if the time length of the first time unit is not greater than (or less than) the first threshold, the terminal device discards the first data transmission and performs the at least one data transmission. Wherein the initial data transmission of the at least one data transmission by the terminal device does not include the DMRS.

The meaning of this scheme is that, when the time length of the first time unit is not greater than or less than a first threshold, the terminal device discards the first data transmission and performs the at least one data transmission. Or, when the time length of the at least one time domain symbol is not greater than or less than a first threshold, the terminal device discards the first data transmission and performs the at least one data transmission. The DMRS does not need to be added to the initial transmission of the at least one data transmission in the procedure.

When the time length of the first time unit or the at least one time domain symbol in which the collision occurs is short, the phase correlation is not greatly affected by the interruption, and the DMRS before the interruption may still be used to demodulate the at least one data transmission, so that the terminal device may discard the first data transmission on the first time unit in which the collision occurs, but may perform the at least one data transmission after the first data transmission according to the first information, and the network device may demodulate the subsequent at least one data transmission according to the DMRS sent before the first data transmission.

Further, in a specific implementation of the scheme, if the first data transmission does not include the DMRS, the terminal device discards the first data transmission and performs the at least one data transmission. Wherein the DMRS is not included in the at least one data transmission.

On the other hand, if the first data transmission contains the DMRS, the terminal device discards the first data transmission, performs the at least one data transmission, and transmits the DMRS in a starting data transmission of the at least one data transmission.

The implementation method 3: if the first data transmission is a signaled data transmission that does not include a DMRS, then the first data transmission and the at least one data transmission are performed after the at least one time domain symbol, and a DMRS (referred to as a second DMRS) is transmitted in the first data transmission.

The implication of this scheme is that the terminal device defers a colliding data transmission and subsequent data transmissions after the colliding time cell, and additionally transmits a DMRS on the colliding data transmission.

It is to be understood that the first data transmission is a data transmission signaled without the DMRS, and it can also be said that the first data transmission is a data transmission signaled by the network device without the DMRS, wherein the network device signals through the signaling that the DMRS is not included in the first data transmission. That is, the network device does not inform the terminal device to transmit the DMRS in the initial data transmission of the first data transmissions, and the second DMRS is additionally transmitted by the terminal device.

Specifically, the signaling in the implementation method 3 is the first signaling. That is, the network device notifies the at least one data transmission as a data transmission that does not include the DMRS through the first signaling, and notifies the first data transmission as a data transmission that does not include the DMRS through the first signaling.

Further, the second DMRS transmitted by the terminal device in the first data transmission is a preamble DMRS, that is, the second DMRS is carried on at least one earliest time-domain symbol in the first time unit.

That is, when the network device configures or indicates that the DMRS is not included in the first data transmission, the terminal device makes the first data transmission and the at least one data transmission after the at least one time domain symbol, and the terminal device transmits the second DMRS in the first data transmission, or the terminal device transmits the second DMRS before the first data transmission. The second DMRS is a newly added DMRS for the terminal device for demodulation of subsequent data transmissions, the second DMRS not configured or indicated by the network device.

For the network device, the received data message includes both the first data transmission and at least one data transmission. Further, the data information received by the network device is at least one data transmission in the K data transmissions, and the at least one data transmission in the K data transmissions includes the first data transmission and the at least one data transmission. In addition, the first data transmission received by the network device includes a second DMRS that is a DMRS that was not notified by the network device of the transmission in the first data transmission.

Similar to the implementation of method 2, in a case where the network device configures or instructs the terminal device to perform the first data transmission and the at least one data transmission without including the DMRS, it is considered that an additional DMRS needs to be transmitted in order to continue to occupy resources after the interruption and recover the transmission after the interruption and to ensure demodulation performance of the transmission after the recovery. But unlike the first data transmission being dropped in the case of method 2, the first data transmission is postponed (postdone) to at least one time domain symbol in which the interruption occurred in method 3, and an additional second DMRS is transmitted in or before the first data transmission.

In addition, the terminal device continues to perform the at least one data transmission after performing the first data transmission, considering that the at least one data transmission is immediately after the first data transmission.

Optionally, the terminal device performs the first data transmission and the at least one data transmission after the at least one time domain symbol, including the terminal device performing the first data transmission and the at least one data transmission after the first time unit.

Optionally, the terminal device performs the first data transmission after the at least one time domain symbol, and includes: the time unit of the terminal device actually performing the first data transmission is later than the first time unit of the first information notification corresponding to the first data transmission, and the time interval between the time unit actually performing the first data transmission and the first time unit of the first information notification corresponding to the first data transmission is greater than or equal to the time length of the at least one time domain symbol or the time length of the first time unit.

Similarly, the terminal device performing the at least one data transmission after the at least one time domain symbol includes: the time unit of the terminal device actually performing the at least one data transmission is later than the time unit of the first information notification corresponding to the at least one data transmission, and the time interval between the time unit actually performing the at least one data transmission and the time unit of the first information notification corresponding to the at least one data transmission is greater than or equal to the time length of the at least one time domain symbol or the duration of the first time unit.

Further, the terminal device punctures (opens) data symbols in the first data transmission to transmit the second DMRS.

Optionally, the terminal device sends the second DMRS in the first data transmission, and data symbols in the first data transmission are multiplexed with the second DMRS in a rate matching manner.

Further, when the terminal device transmits the second DMRS before the first data transmission, the terminal device transmits the second DMRS on a time domain symbol that was most recent before the first data transmission. That is, the second DMRS is immediately followed by the first data transmission.

Fig. 12 is a schematic diagram of deferring transmission of a first data transmission and transmitting an additional DMRS according to the present application, where, as shown in fig. 12, a first information configures or schedules a terminal device to transmit K ═ 6 data transmissions in a complete time slot, where DMRSs are included in data transmission #1 and data transmission #4, and DMRSs are not included in other data transmissions, as shown in (a) of fig. 12. In (b) (c) of fig. 12, the first symbol in the first time unit in which the second information configuration data transmission #5 is located is a "downlink" symbol. In this case, the first data transmission is data transmission #5, and at least one data transmission is data transmission # 6; the terminal device interrupts transmission due to collision of the first symbol in the first time unit, delays data transmission #5 and data transmission #6 until the end of the interruption, and since the network device is not configured with or instructs the terminal device to transmit DMRS in data transmission #5, in order to ensure demodulation performance, the terminal device transmits additional DMRS on the first time-domain symbol in the data transmission #5 that is delayed from being transmitted, as shown in (b) of fig. 12; alternatively, as shown in (c) of fig. 12, the terminal device transmits an additional DMRS on the latest one time domain symbol before the data transmission #5 which is transmitted late.

Further, similar to the implementation method two, in a specific implementation of the scheme, whether to transmit the additional DMRS may also be determined according to the length of the first data transmission/at least one time element, as to whether to transmit the additional DMRS.

That is, in a specific implementation of this solution, if the time length of the at least one time domain symbol notified by the second information is greater than (or greater than or equal to) the first threshold, the terminal device performs the first data transmission and the at least one data transmission after the at least one time domain symbol, and sends the second DMRS in the first data transmission; or, if the time length of the first time unit is greater than (or greater than or equal to) the first threshold, performing the first data transmission and the at least one data transmission after the at least one time domain symbol, and transmitting a second DMRS in the first data transmission.

That is, when the time length of the collided first time cell or the at least one time domain symbol is relatively long, the phase correlation cannot be maintained, and the terminal device may transmit an additional DMRS in the first data transmission deferred to the transmission and perform the first data transmission and the at least one data transmission, so that the network device may correctly demodulate the first data transmission and the at least one data transmission using the second DMRS. On the other hand, if the time length of the at least one time domain symbol notified by the second information is not greater than (or less than) the first threshold, the terminal device performs the first data transmission and the at least one data transmission after the at least one time domain symbol; or, if the time length of the first time unit is not greater than (or less than) the first threshold, the terminal device performs the first data transmission and the at least one data transmission after the at least one time domain symbol. Wherein the first data transmission by the terminal device does not include the DMRS.

The meaning of this scheme is that when the time length of the first time unit is not greater than or less than a first threshold, or when the time length of the at least one time domain symbol is not greater than or less than a first threshold, the terminal device defers the first data transmission and the at least one data transmission when performing the K data transmissions, when no additional DMRS needs to be transmitted in the first data transmission.

When the time length of the collided first time unit or the at least one time domain symbol is short, the phase correlation is not greatly influenced by the interruption, and the DMRS before the interruption can still be used for demodulating the first data transmission and the at least one data transmission, so that the terminal device can defer the first data transmission, and the network device can demodulate the subsequent first data transmission and the at least one data transmission according to the DMRS sent before the first data transmission.

According to the data transmission method, under the scene that a plurality of PUSCHs share the DMRS, when one PUSCH collides with a time unit which is configured or indicated by network equipment and is not used for PUSCH transmission, the terminal equipment discards the subsequent PUSCH which does not contain the DMRS or transmits an additional DMRS on the subsequent PUSCH which does not contain the DMRS, so that the PUSCH which does not contain the DMRS is prevented from being demodulated and failed, and the purpose of improving the reliability of data transmission is achieved.

Fig. 13 is a schematic structural diagram of a first embodiment of a communication apparatus provided in the present application, and as shown in fig. 13, the communication apparatus 10 may be a terminal device, or may be a chip applied in the terminal device, where the communication apparatus 10 includes:

a receiving module 11, a processing module 12 and a sending module 13 for transmitting data information;

the receiving module 11 is configured to receive first information from a network device, where the first information is used to notify the communication apparatus to send K data transmissions on K consecutive time units, where K is an integer greater than 1, the K time units are in one-to-one correspondence with the K data transmissions, the K data transmissions include a first data transmission and at least one data transmission after the first data transmission, and the at least one data transmission is a data transmission that is notified by signaling and does not include a DMRS;

the receiving module 11 is further configured to receive second information from the network device, where the second information is used to notify that at least one time domain symbol in a first time unit is not used for uplink data information transmission by the communication apparatus, and the first time unit is a time unit corresponding to the first data transmission in the K time units;

the processing module 12 is configured to perform data information processing according to the first information and the second information.

The communication device provided in this embodiment is used to implement the technical solution in any of the foregoing method embodiments, and the implementation principle and the technical effect are similar, which is not limited to this solution.

On the basis of the above embodiment, the first data transmission is temporally consecutive to the at least one data transmission;

Optionally, the first information is specifically used to notify the communication device 10 to perform K times of repeated transmission on the first data packet in the K time units, where each data transmission in the K data transmissions corresponds to one transmission of the first data packet.

In a specific implementation of the terminal device 10, the processing module 12 is specifically configured to:

discarding the first data transmission and the at least one data transmission.

Optionally, any time domain symbol in the time unit corresponding to the at least one data transmission is not signaled to be unused for uplink data information transmission by the communication device 10.

Further, in another implementation scheme of the terminal device 10, the processing module 12 is specifically configured to:

Optionally, the processing module 12 is specifically configured to discard the first data transmission if the time length of the at least one time domain symbol notified by the second information is not greater than the first threshold;

the sending module 13 is specifically configured to send the at least one data transmission.

Optionally, the processing module 12 is specifically configured to discard the first data transmission and the at least one data transmission;

the sending module 13 is configured to recover the second data transmission, or recover, from the second data transmission, the second data transmission and data transmission after the second data transmission in the K data transmissions;

Optionally, the processing module 12 is further configured to discard the first data transmission;

the sending module 13 is further configured to perform the at least one data transmission, and send the DMRS in a starting data transmission of the at least one data transmission.

Optionally, if the first data transmission is signaled data transmission that does not include a DMRS, the sending module 13 is specifically configured to perform the first data transmission and the at least one data transmission after the at least one time domain symbol, and send the DMRS in the first data transmission.

The communication device provided in any of the above embodiments is configured to implement a technical scheme on the terminal device side in any of the above method embodiments, and the implementation principle and the technical effect are similar, which is not limited to this scheme.

Fig. 14 is a schematic structural diagram of a second embodiment of a communication apparatus provided in the present application, and as shown in fig. 14, the communication apparatus may be a network device, or may be a chip applied to the network device, and the communication apparatus 20 includes:

a sending module 21, configured to send first information to a terminal device, where the first information is used to notify the terminal device to send K data transmissions on K consecutive time units, where K is an integer greater than 1, the K time units are in one-to-one correspondence with the K data transmissions, the K data transmissions include a first data transmission and at least one data transmission after the first data transmission, and the at least one data transmission is a data transmission that is notified by signaling and does not include a demodulation reference signal DMRS;

the sending module 21 is further configured to send second information to the terminal device, where the second information is used to notify that at least one time domain symbol in a first time unit is not used for uplink data information transmission of the terminal device, and the first time unit is a time unit corresponding to the first data transmission in the K time units;

a receiving module 22, configured to receive data information from the terminal device, where the data information is determined by the terminal device according to the first information and the second information.

Optionally, the first information is specifically used to notify the terminal device to perform K times of repeated transmission on the first data packet in the K time units, where each data transmission in the K data transmissions corresponds to one transmission of the first data packet.

Optionally, any time domain symbol in the time unit corresponding to the at least one data transmission is not signaled to be unused for uplink data information transmission by the terminal device.

The communication apparatus provided in any of the above embodiments is configured to implement the technical solution on the network device side in any of the foregoing method embodiments, and the implementation principle and the technical effect are similar, which are not described herein again.

The present application further provides a communication apparatus, comprising: a processor coupled with a memory;

the memory for storing a computer program;

the processor is configured to execute the computer program stored in the memory, so that the communication apparatus executes the data transmission method on the network device or the terminal device side in any of the foregoing method embodiments.

In a specific implementation of the above communication device, the number of processors is at least one, and the processors are used for executing execution instructions stored in the memory, i.e. computer programs. Optionally, the memory may also be integrated within the processor.

The present application also provides a computer-readable storage medium comprising: a program or instructions for executing a method for implementing data transmission on the terminal device side or the network device side in any of the foregoing embodiments when the program or instructions are run on a computer.

The present application provides a chip, the chip includes: the device comprises at least one interface circuit and at least one processing circuit, wherein the interface circuit is coupled with the processing circuit, and the processing circuit is used for executing the data transmission method of the terminal device side or the network device side in any one of the method embodiments.

It is understood that the processor in the embodiments of the present application may be a Central Processing Unit (CPU), other general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. The general purpose processor may be a microprocessor, but may be any conventional processor.

The method steps in the embodiments of the present application may be implemented by hardware, or may be implemented by software instructions executed by a processor. The software instructions may be comprised of corresponding software modules that may be stored in Random Access Memory (RAM), flash memory, read-Only memory (ROM), Programmable ROM (PROM), Erasable Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), registers, a hard disk, a removable hard disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC. In addition, the ASIC may reside in a network device or a terminal device. Of course, the processor and the storage medium may reside as discrete components in a transmitting device or a receiving device.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are performed in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer program or instructions may be stored on or transmitted over a computer-readable storage medium. The computer readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server that integrates one or more available media. The usable medium may be a magnetic medium, such as a floppy disk, a hard disk, a magnetic tape; or an optical medium, such as a DVD; it may also be a semiconductor medium, such as a Solid State Disk (SSD).

In the various embodiments of the present application, unless otherwise specified or logically conflicting, terms and/or descriptions between different embodiments have been consistent and may be mutually referenced, and features of different embodiments may be combined to form new embodiments based on their inherent logical relationships.

In the present application, "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, indicating that there may be three relationships, e.g., a and/or B, which may indicate: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. In the description of the text of the present application, the character "/" generally indicates that the former and latter associated objects are in an "or" relationship; in the formula of the present application, the character "/" indicates that the preceding and following related objects are in a relationship of "division".

It is to be understood that the various numerical references referred to in the embodiments of the present application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of the present application. The sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of the processes should be determined by their functions and inherent logic.

Claims

1. A method for transmitting data, the method comprising:

receiving first information from a network device, wherein the first information is used for notifying that K data transmissions are performed on K consecutive time units, K is an integer greater than 1, the K time units are in one-to-one correspondence with the K data transmissions, the K data transmissions include a first data transmission and at least one data transmission after the first data transmission, and the at least one data transmission is a data transmission which is signaled and does not include a demodulation reference signal (DMRS);

2. The method of claim 1, wherein the first data transmission is temporally contiguous with the at least one data transmission;

3. The method according to claim 1 or 2, wherein the first information is specifically configured to inform that a first data packet is repeatedly transmitted K times over the K time units, wherein each of the K data transmissions corresponds to one transmission of the first data packet.

4. The method according to any of claims 1 to 3, wherein at least one of the K data transmissions comprises a data transmission that precedes the at least one data transmission and comprises a DMRS.

5. The method according to any of claims 1 to 4, wherein a time domain symbol of the at least one time domain symbol of the second information notification is any of:

6. The method according to any one of claims 1 to 4,

the second information is used to notify that a part of the at least one time domain symbol is on a first time slot, and a part of the at least one time domain symbol is on a second time slot, where the second time slot is a next time slot of the first time slot.

7. The method according to any of claims 1 to 6, wherein any time domain symbol in the time unit corresponding to the at least one data transmission is not signaled as not being used for uplink data information transmission.

8. The method according to any one of claims 1 to 7, wherein the performing data information processing according to the first information and the second information includes:

discarding the first data transmission and the at least one data transmission.

9. The method of claim 8, wherein the discarding the first data transmission and the at least one data transmission comprises:

10. The method according to any one of claims 1 to 7, wherein the performing data information processing according to the first information and the second information includes:

11. The method according to any one of claims 1 to 10,

12. The method according to claim 8 or 9,

if, of the K data transmissions, there is a second data transmission that is closest to the first data transmission and that includes a DMRS after the first data transmission, then the at least one data transmission is all of the K data transmissions between the first data transmission and the second data transmission.

13. The method of claim 12, further comprising:

resuming the second data transmission, or resuming the second data transmission and data transmission subsequent to the second data transmission in the K data transmissions, from the beginning of the second data transmission.

14. The method according to any one of claims 1 to 7, wherein the performing data information processing according to the first information and the second information includes:

discarding the first data transmission;

15. The method according to any one of claims 1 to 7, wherein the performing data information processing according to the first information and the second information includes:

16. A method for transmitting data, the method comprising:

sending first information to a terminal device, wherein the first information is used for informing the terminal device to send K data transmissions on K consecutive time units, K is an integer greater than 1, the K time units are in one-to-one correspondence with the K data transmissions, the K data transmissions include a first data transmission and at least one data transmission after the first data transmission, and the at least one data transmission is a data transmission which is signaled and does not include a demodulation reference signal (DMRS);

and receiving data information from the terminal equipment.

17. The method of claim 16, wherein the first data transmission is temporally contiguous with the at least one data transmission;

18. The method according to claim 16 or 17, wherein the first information is specifically configured to notify the terminal device to perform K repeated transmissions of a first data packet over the K time units, wherein each of the K data transmissions corresponds to one transmission of the first data packet.

19. The method according to any of claims 16 to 18, wherein at least one of the K data transmissions comprises a data transmission that precedes the at least one data transmission and comprises a DMRS.

20. The method according to any of claims 16 to 19, wherein a time domain symbol of said at least one time domain symbol of said second information notification is any of:

21. The method according to any one of claims 16 to 19,

22. The method according to any of claims 16 to 21, wherein any time domain symbol in the time unit corresponding to the at least one data transmission is not signaled as not being used for uplink data information transmission.

23. The method of any of claims 16 to 22, wherein the data information does not include the first data transmission and the at least one data transmission.

24. The method of claim 23, wherein the data information does not include the first data transmission and the at least one data transmission if a time length of the at least one time domain symbol signaled by the second information is greater than a first threshold.

25. The method according to any of claims 16 to 22, wherein if the time length of the at least one time domain symbol signaled by the second information is not greater than the first threshold, the data information does not include the first data transmission, and the data information includes the at least one data transmission.

26. The method of any one of claims 16 to 25,

27. The method of claim 23 or 24,

28. The method of claim 27, wherein the data information comprises the second data transmission; or the data information includes the second data transmission and a data transmission subsequent to the second data transmission of the K data transmissions.

29. The method of any one of claims 16 to 22, wherein the data information does not include the first data transmission, and wherein the data information includes the at least one data transmission, and wherein a DMRS is included in a starting data transmission of the at least one data transmission.

30. The method of any of claims 16 to 22, wherein if the first data transmission is a signalled data transmission which does not include a DMRS, then the data information comprises the first data transmission and the at least one data transmission, and the DMRS is included in the first data transmission.

31. A communication apparatus, characterized in that it is configured to execute the method of transmission of data according to any one of claims 1 to 30.

32. A communications apparatus, comprising: a processor coupled with a memory;

the memory for storing a computer program;

the processor configured to execute the computer program stored in the memory to cause the communication apparatus to perform the data transmission method according to any one of claims 1 to 30.

33. A computer-readable storage medium characterized by comprising a program or instructions for executing the method of transmitting data according to any one of claims 1 to 30 when the program or instructions are run on a computer.