CN112312553B

CN112312553B - Data transmission method and device

Info

Publication number: CN112312553B
Application number: CN201910704681.2A
Authority: CN
Inventors: 杭海存; 施弘哲; 纪刘榴; 王明哲; 毕晓艳
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-07-31
Filing date: 2019-07-31
Publication date: 2024-04-12
Anticipated expiration: 2039-07-31
Also published as: CN112312553A; WO2021018262A1

Abstract

The embodiment of the application provides a data transmission method and a device thereof. In a repeated transmission scenario, a time-frequency resource occupied by repeated transmission data may collide with a time-frequency resource occupied by non-repeated transmission data, and in order to avoid such a collision, the method provided in the embodiment of the present application includes: determining a pre-configured time domain resource of the first downlink data, wherein the pre-configured time domain resource is used for repeatedly transmitting the first downlink data; receiving configuration information, and determining a scheduling time domain resource according to the configuration information, wherein non-repeated transmission data are transmitted on the scheduling time frequency resource; and if the pre-configured time domain resource and the scheduling time domain resource have overlapped time domain resources, transmitting non-repeated transmission data on the scheduling time domain resource. By adopting the embodiment of the application, the transmission conflict between the repeated transmission data and the non-repeated transmission data can be avoided under the repeated transmission scene of the single-station or multi-station cooperative transmission.

Description

Data transmission method and device

Technical Field

The embodiment of the application relates to the technical field of communication, in particular to a data transmission method and a device thereof.

Background

With the development of communication technology, the fifth generation (5 ^th -generation, 5G) mobile communication technology has evolved. The 5G system has higher requirements on various performances such as system capacity, bandwidth, time delay, peak rate and the like. To achieve the performance goals of 5G systems, increased bandwidth, improved spectral efficiency are requiredIncreasing site density, etc. Increasing the bandwidth means that a high frequency band needs to be employed, which reduces cell coverage, requiring an increase in transmission reception points (transmission reception point, TRP).

Multi-station cooperative transmission, which refers to that a plurality of TRPs participate cooperatively in data transmission of one terminal device, for example, cooperatively participating in transmission of a physical downlink shared channel (physical downlink shared channel, PDSCH); or a plurality of TRPs jointly receive data transmitted by one terminal device, for example, jointly receive a physical uplink shared channel (physical uplink shared channel, PUSCH) transmitted by a certain terminal device. The repeated transmission may be that one TRP performs repeated transmission on the same data, or that a plurality of TRPs perform repeated transmission on the same data, for example, TRP 1 transmits data 1 in time unit 1, TRP 2 transmits data 1 in time unit 2, and time unit 1 and time unit 2 may be the same time unit or different time units.

In the repeated transmission scenario, there may be transmission collision, and how to avoid the transmission collision is a technical problem to be solved.

Disclosure of Invention

The embodiment of the application provides a data transmission method and a data transmission device, which can avoid transmission conflict in a repeated transmission scene.

A first aspect of an embodiment of the present application provides a data transmission method, including: determining a pre-configured time domain resource of the first downlink data, wherein the pre-configured time domain resource is used for repeatedly transmitting the first downlink data; receiving configuration information, and determining scheduling time domain resources according to the configuration information; and if the pre-configured time domain resource and the scheduling time domain resource have overlapped time domain resources, transmitting data on the scheduling time domain resource.

In the first aspect of the embodiment of the present application, when the preconfigured time domain resource of the first downlink data that is repeatedly transmitted overlaps with the scheduled time domain resource, the data is preferentially transmitted on the scheduled time domain resource, so that transmission collision in the repeated transmission scenario can be avoided.

In one possible implementation, the scheduled time domain resource is a time domain resource for transmitting second downlink data, where the second downlink data has a higher priority than the first downlink data. Since the priority of the second downlink data is higher than that of the first downlink data, the second downlink data is preferentially transmitted on the scheduling time domain resource under the condition of overlapping. The second downlink data may be emergency service data or an aperiodic reference signal.

In one possible implementation, the configuration information indicates that time domain resources are scheduled for uplink transmission, i.e. for carrying uplink data. It is understood that the scheduled time domain resource cannot be used for transmitting the first downlink data.

In one possible implementation manner, it is assumed that the preconfigured time domain resources of the first downlink data are used for repeatedly transmitting N first downlink data, where the preconfigured time domain resource of the ith first downlink data in the preconfigured time domain resources of the first downlink data overlaps with the scheduled time domain resource, N is a positive integer, and i is an integer greater than or equal to 1 and less than or equal to N. Then the ith first downlink data may be received in a punctured fashion on the overlapping time domain resources. The method provides that the ith first downlink data is received in a punching mode under the condition of overlapping, so that the interference calculated by the terminal equipment is more accurate, and the influence on the performance is reduced.

Further, under the condition that the demodulation reference signal is not carried on the overlapped time domain resource, the ith first downlink data is received on the overlapped time domain resource in a punching mode. The overlapped time domain resources do not bear demodulation reference signals, so that the data borne by the scheduling time domain resources can not influence the channel estimation of the ith first downlink data, and can be received in a punching mode.

In one possible implementation, the method further includes: and determining the actual receiving time domain resource of each first downlink data according to the overlapped time domain resource, and respectively receiving the first downlink data on the actual receiving time domain resource of each first downlink data, wherein the actual receiving time domain resource of each first downlink data is not overlapped with the scheduling time domain resource. This approach gives a scheme for transmitting first downlink data in the case of overlapping, and the actual received time domain resources of each first downlink data may be determined by moving the pre-configured time domain resources of each first downlink data based on the overlapping time domain resources. When moving, all the preconfigured time domain resources of the ith first downlink data can be moved, and part of the preconfigured time domain resources of the ith first downlink data can also be moved.

In one possible implementation manner, it is assumed that the preconfigured time domain resources of the first downlink data are used for repeatedly transmitting N first downlink data, where the preconfigured time domain resource of the ith first downlink data in the preconfigured time domain resources of the first downlink data overlaps with the scheduled time domain resource, N is a positive integer, and i is an integer greater than or equal to 1 and less than or equal to N. The method further comprises the steps of: and determining the actual receiving time domain resource of the ith first downlink data according to the overlapped time domain resource, and receiving the ith first downlink data on the actual receiving time domain resource of the ith first downlink data. This way a scheme of transmitting the ith first downlink data in case of overlap is given.

In one possible implementation manner, the actual received time domain resource of the ith first downlink data is not overlapped with the scheduled time domain resource, in this manner, the ith first downlink data is received on the actual received time domain resource of the ith first downlink data, so that the scheduled time domain resource can be avoided, and transmission collision is avoided. The method can be realized by moving the preconfigured time domain resource of the ith first downlink data, and the moved time domain resource is the actual received time domain resource of the ith first downlink data.

In one possible implementation manner, in the process of moving the preconfigured time domain resource of the ith first downlink data, the actually received time domain resource of the ith first downlink data does not cross the time domain unit, that is, the actually received time domain resource of the ith first downlink data and the overlapped time domain resource belong to the same time domain unit. The time domain unit may be a slot (slot).

In one possible implementation, to ensure that the actual received time domain resource of the ith first downlink data and the overlapping time domain resource belong to the same time domain unit, the size of the actual received time domain resource of the ith first downlink data may be inconsistent with the size of the preconfigured time domain resource thereof, for example, the number of the actual received time domain resources of the ith first downlink data is smaller than the number of the configured time domain resources thereof, and if the number of time domain symbols is used to represent the size of the time domain resource, the number of time domain symbols of the actual received time domain resource of the ith first downlink data is smaller than the number of the time domain symbols of the configured time domain resource thereof. In this case, the modulation and coding strategy may be adjusted, and the ith first downlink data is received on the actual receiving time domain resource of the ith first downlink data according to the adjusted modulation and coding strategy. For example, the code rate corresponding to the modulated code strategy after the modulation is adjusted is different from the code rate before the modulation, and the modulation mode is the same.

In one possible implementation, the method further includes: and receiving transmission configuration indication information for indicating a plurality of activated transmission configuration indication states. The first downlink data may be determined to be from a plurality of TRPs according to the plurality of activated transmission configuration indication information, and a scenario in a multi-station cooperative transmission may be determined.

A second aspect of an embodiment of the present application provides a data transmission method, including: transmitting resource indication information, wherein the resource indication information is used for indicating a pre-configured time domain resource of the first downlink data, and the pre-configured time domain resource is used for repeatedly transmitting the first downlink data; transmitting configuration information, wherein the configuration information is used for indicating scheduling time domain resources; and if the pre-configured time domain resource and the scheduling time domain resource have overlapped time domain resources, transmitting data on the scheduling time domain resource.

In the second aspect of the embodiment of the present application, when the preconfigured time domain resource of the first downlink data that is repeatedly transmitted overlaps with the scheduled time domain resource, the data is preferentially transmitted on the scheduled time domain resource, so that transmission collision in the repeated transmission scenario can be avoided.

In one possible implementation manner, it is assumed that the preconfigured time domain resources of the first downlink data are used for repeatedly transmitting N first downlink data, where the preconfigured time domain resource of the ith first downlink data in the preconfigured time domain resources of the first downlink data overlaps with the scheduled time domain resource, N is a positive integer, and i is an integer greater than or equal to 1 and less than or equal to N. The ith first downlink data may be transmitted in a punctured fashion over the overlapping time domain resources. The method gives that the ith first downlink data is transmitted in a punching mode under the condition of overlapping, so that the interference calculated by the terminal equipment is more accurate, and the influence on the performance is reduced.

Further, under the condition that the overlapped time domain resources do not bear demodulation reference signals, the ith first downlink data is sent on the overlapped time domain resources in a punching mode. The overlapped time domain resources do not bear demodulation reference signals, so that the data borne by the scheduling time domain resources can not influence the channel estimation of the ith first downlink data, and can be transmitted in a punching mode.

In one possible implementation, the method further includes: and determining the actual transmission time domain resource of each first downlink data according to the overlapped time domain resource, and respectively transmitting the first downlink data on the actual transmission time domain resource of each first downlink data, wherein the actual transmission time domain resource of each first downlink data is not overlapped with the scheduling time domain resource. This way, given a scheme for transmitting first downlink data in the case of overlapping, the actual transmission time domain resource of each first downlink data may be determined by moving the preconfigured time domain resource of each first downlink data based on the overlapping time domain resources. When moving, all the preconfigured time domain resources of the ith first downlink data can be moved, and part of the preconfigured time domain resources of the ith first downlink data can also be moved.

In one possible implementation manner, it is assumed that the preconfigured time domain resources of the first downlink data are used for repeatedly transmitting N first downlink data, where the preconfigured time domain resource of the ith first downlink data in the preconfigured time domain resources of the first downlink data overlaps with the scheduled time domain resource, N is a positive integer, and i is an integer greater than or equal to 1 and less than or equal to N. The method further comprises the steps of: the actual transmission time domain resource of the ith first downlink data can be determined according to the overlapped time domain resource, and the ith first downlink data is transmitted on the actual transmission time domain resource of the ith first downlink data. This way a scheme of transmitting the ith first downlink data in case of overlap is given.

In one possible implementation manner, the actual transmission time domain resource of the ith first downlink data is not overlapped with the scheduling time domain resource, in this manner, the ith first downlink data is transmitted on the actual transmission time domain resource of the ith first downlink data, so that the scheduling time domain resource can be avoided, and transmission collision is avoided. The method can be realized by moving the preconfigured time domain resource of the ith first downlink data, and the moved time domain resource is the actual time domain resource for transmitting the ith first downlink data.

In a possible implementation manner, in the process of moving the preconfigured time domain resource of the ith first downlink data, the actually sent time domain resource of the ith first downlink data does not cross the time domain unit, that is, the actually sent time domain resource of the ith first downlink data and the overlapped time domain resource belong to the same time domain unit. The time domain unit may be a slot (slot).

In one possible implementation, to ensure that the actual transmission time domain resource of the ith first downlink data and the overlapping time domain resource belong to the same time domain unit, the size of the actual transmission time domain resource of the ith first downlink data may be inconsistent with the size of the preconfigured time domain resource thereof, for example, the number of the actual transmission time domain resources of the ith first downlink data is smaller than the number of the configured time domain resources thereof, and if the number of the time domain symbols represents the size of the time domain resource, the number of the time domain symbols of the actual transmission time domain resource of the ith first downlink data is smaller than the number of the time domain symbols of the configured time domain resource thereof. In this case, the modulation and coding strategy may be adjusted, and the ith first downlink data is transmitted on the actual transmission time domain resource of the ith first downlink data according to the adjusted modulation and coding strategy. For example, the code rate corresponding to the modulated code strategy after the modulation is adjusted is different from the code rate before the modulation, and the modulation mode is the same.

In one possible implementation manner, it is assumed that the preconfigured time domain resources of the first downlink data are used for repeatedly transmitting N first downlink data, where the preconfigured time domain resource of the ith first downlink data in the preconfigured time domain resources of the first downlink data overlaps with the scheduled time domain resource, N is a positive integer, and i is an integer greater than or equal to 1 and less than or equal to N. The method further comprises the steps of: according to the overlapped time domain resources, determining the actual transmission time domain resources of the ith first downlink data, wherein the actual transmission time domain resources of the ith first downlink data are not overlapped with the scheduling time domain resources; if the number of the actually transmitted time domain resources of the ith first downlink data is smaller than the number of the preconfigured time domain resources of the ith first downlink data, the ith first downlink data is not transmitted on the actually transmitted time domain resources of the ith first downlink data. I.e. the i-th first downlink data of the configuration is not transmitted. And under the condition that the first downlink data is correctly transmitted, one first downlink data is transmitted later, so that the influence on the content of the first downlink data acquired by the terminal equipment is small.

In one possible implementation manner, it is assumed that the preconfigured time domain resources of the first downlink data are used for repeatedly transmitting N first downlink data, where the preconfigured time domain resource of the ith first downlink data in the preconfigured time domain resources of the first downlink data overlaps with the scheduled time domain resource, N is a positive integer, and i is an integer greater than or equal to 1 and less than or equal to N. The method further comprises the steps of: and not transmitting the ith first downlink data on the preconfigured time domain resource of the ith first downlink data. I.e. the i-th first downlink data of the configuration is not transmitted. And under the condition that the first downlink data is correctly transmitted, one first downlink data is transmitted later, so that the influence on the content of the first downlink data acquired by the terminal equipment is small.

In one possible implementation, transmission configuration indication information is sent, the transmission configuration indication information being used to indicate a plurality of activated transmission configuration indication states. The terminal device may determine that the first downlink data is from a plurality of TRPs according to the plurality of activated transmission configuration indication information, and determine a scenario in the multi-station cooperative transmission.

A third aspect of the embodiments of the present application provides a data transmission device, which may be a terminal device, where the terminal device has some or all of the functions of the terminal device in the method example described in the first aspect, for example, the functions of the terminal device may be a function in some or all of the embodiments of the present application, or may be a function that implements any one of the embodiments of the present application separately. The functions may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the functions described above.

In one possible design, the structure of the terminal device may include a processing unit and a communication unit, where the processing unit is configured to support the terminal device to perform the corresponding functions in the above method. The communication unit is used for supporting communication between the terminal equipment and other equipment. The terminal device may further comprise a memory unit for coupling with the processing unit and the communication unit, which holds the program instructions and data necessary for the terminal device.

In one embodiment, a terminal device includes a processing unit and a communication unit,

a processing unit, configured to determine a preconfigured time domain resource of the first downlink data, where the preconfigured time domain resource is used for repeatedly transmitting the first downlink data;

a communication unit configured to receive configuration information;

the processing unit is also used for determining scheduling time domain resources according to the configuration information;

and the communication unit is also used for transmitting data on the scheduling time domain resource under the condition that the processing unit determines that the overlapping time domain resource exists between the pre-configured time domain resource and the scheduling time domain resource.

As an example, the processing unit may be a processor, the communication unit may be a transceiver, and the storage unit may be a memory.

In one embodiment, a terminal device includes at least one processor and a transceiver,

a processor configured to determine a pre-configured time domain resource of the first downlink data, the pre-configured time domain resource being used for repeatedly transmitting the first downlink data;

a transceiver for receiving configuration information;

a processor for determining a scheduling time domain resource according to the configuration information;

and the transceiver is also used for transmitting data on the scheduling time domain resource under the condition that the processing unit determines that the pre-configured time domain resource and the scheduling time domain resource have overlapping time domain resources.

The processor for determining the pre-configured time domain resources of the first downlink data may be the same as or different from the processor for determining the scheduled time domain resources according to the configuration information.

A fourth aspect of the present application provides a data transmission apparatus, which may be a network device, where the network device has some or all of the functions of the network device in the method example described in the first aspect, for example, the functions of the network device may be a function in some or all of the embodiments in the present application, or may be a function that implements any one of the embodiments in the present application separately. The functions may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the functions described above.

In one possible design, the network device may include a processing unit and a communication unit in a structure of the network device, where the processing unit is configured to support the network device to perform the corresponding functions in the above method. The communication unit is used for supporting communication between the network device and other devices. The network device may also include a storage unit for coupling with the processing unit and the communication unit, which holds the program instructions and data necessary for the network device.

In one embodiment, a network device includes a processing unit and a communication unit,

a communication unit, configured to send resource indication information, where the resource indication information is configured to indicate a preconfigured time domain resource of the first downlink data, and the preconfigured time domain resource is used to repeatedly transmit the first downlink data; transmitting configuration information, wherein the configuration information is used for indicating scheduling time domain resources;

In one embodiment, a network device includes at least one processor and a transceiver,

a transceiver configured to transmit resource indication information, where the resource indication information is configured to indicate a preconfigured time domain resource of the first downlink data, and the preconfigured time domain resource is configured to repeatedly transmit the first downlink data; transmitting configuration information, wherein the configuration information is used for indicating scheduling time domain resources;

and the transceiver is also used for transmitting data on the scheduling time domain resource under the condition that the processor determines that the overlapping time domain resource exists between the pre-configured time domain resource and the scheduling time domain resource.

In particular implementations, a processor may be used to perform, for example and without limitation, baseband related processing and a transceiver may be used to perform, for example and without limitation, radio frequency transceiving. The above devices may be provided on separate chips, or may be provided at least partially or entirely on the same chip. For example, the processor may be further divided into an analog baseband processor and a digital baseband processor. Wherein the analog baseband processor may be integrated on the same chip as the transceiver and the digital baseband processor may be provided on a separate chip. With the continued development of integrated circuit technology, more and more devices may be integrated on the same chip, for example, a digital baseband processor may be integrated on the same chip with a variety of application processors (e.g., without limitation, graphics processors, multimedia processors, etc.). Such chips may be referred to as system on chips (system on chips). Whether the individual devices are independently disposed on different chips or integrally disposed on one or more chips is often dependent on the specific needs of the product design. The embodiment of the invention does not limit the specific implementation form of the device.

A fifth aspect of embodiments of the present application provides a processor configured to perform the above-described methods. In performing these methods, the process of transmitting the information or data and receiving the information or data in the above-described methods may be understood as a process of outputting the information or data by a processor and a process of receiving the input information or data by a processor. Specifically, when outputting the above information or data, the processor outputs the above information or data to the transceiver for transmission by the transceiver. Still further, the information or data may require additional processing after being output by the processor before reaching the transceiver. Similarly, when the processor receives the input of the information or data, the transceiver receives the information or data and inputs it to the processor. Further, after the transceiver receives the information or data, the information or data may need to be further processed before being input to the processor.

Based on the above principle, for example, the transmission configuration information mentioned in the foregoing method may be understood as configuration information of the processor transmission output. For another example, receiving configuration information may be understood as the processor receiving configuration information.

As such, operations such as transmitting, sending, and receiving, etc., related to a processor may be understood more generally as operations such as outputting, receiving, inputting, etc., by the processor, if not specifically stated, or if not contradicted by actual or inherent logic in the related description, rather than directly by radio frequency circuitry and antennas.

In a specific implementation, the processor may be a processor dedicated to performing the methods, or may be a processor that executes computer instructions in a memory to perform the methods, e.g., a general purpose processor. The memory may be a non-transitory (non-transitory) memory, such as a Read Only Memory (ROM), which may be integrated on the same chip as the processor, or may be separately provided on different chips, and the type of the memory and the manner in which the memory and the processor are provided are not limited in the embodiments of the present invention.

A sixth aspect of the embodiments of the present application provides a chip system comprising at least one processor and an interface for supporting a terminal device to implement the functionality involved in the first aspect, e.g. to determine pre-configured time domain resources of first downlink data. In one possible design, the chip system further includes a memory for holding program instructions and data necessary for the terminal device. The chip system can be composed of chips, and can also comprise chips and other discrete devices.

A seventh aspect of the embodiments of the present application provides a chip system, which includes at least one processor and an interface, configured to support a network device to implement the functions related to the first aspect, for example, determining an actual transmission time domain resource of the ith first downlink data according to the overlapping time domain resource. In one possible design, the chip system further includes a memory for holding program instructions and data necessary for the terminal device. The chip system can be composed of chips, and can also comprise chips and other discrete devices.

An eighth aspect of the embodiments of the present application provides a computer storage medium for storing computer software instructions for use with the above-described terminal device, which includes a program for executing any one of the first aspect to the sixth aspect of the above-described method.

A ninth aspect of the embodiments of the present application provides a computer storage medium for storing computer software instructions for use with the network device described above, comprising a program for performing the second or seventh aspect of the methods described above.

A tenth aspect of the embodiments of the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the first aspect described above.

An eleventh aspect of the embodiments of the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the second aspect described above.

A twelfth aspect of the embodiments of the present application provides a computer program comprising instructions which, when run on a computer, cause the computer to perform the method of the first aspect described above.

A thirteenth aspect of an embodiment of the present application provides a computer program comprising instructions which, when run on a computer, cause the computer to perform the method of the second aspect described above.

A fourteenth aspect of embodiments of the present application provides a data transmission system, which includes one or more terminal devices, and one or more network devices.

Drawings

Fig. 1 is three exemplary diagrams of repeated transmissions in the time domain under a single station scenario;

fig. 2 is three exemplary diagrams of repeated transmissions in the time domain in a multi-station scenario;

FIG. 3 is an exemplary diagram of time domain resources having overlapping time domain resources of pre-configured time domain resources and scheduling time domain data;

FIG. 4 is a schematic diagram of a network architecture to which embodiments of the present application are applied;

FIG. 5 is a schematic diagram of another network architecture to which embodiments of the present application are applied;

Fig. 6 is a flow chart of a data transmission method according to an embodiment of the present application;

fig. 7-1 is an exemplary diagram of transmission in a puncturing manner on a time-frequency resource according to an embodiment of the present application;

fig. 7-2 is an exemplary diagram of transmission in a punctured manner on a time domain resource according to an embodiment of the present application;

fig. 8 is an exemplary diagram of a collision-free transmission according to an embodiment of the present application;

fig. 9 is an exemplary diagram of another collision-free transmission provided in an embodiment of the present application;

fig. 10 is an exemplary diagram of yet another collision-free transmission provided in an embodiment of the present application;

fig. 11 is an exemplary diagram of yet another collision-free transmission provided in an embodiment of the present application;

FIG. 12 is a diagram of an example of transmission in a particular case provided by an embodiment of the present application;

FIG. 13 is a diagram of another transmission example in a special case provided in an embodiment of the present application;

FIG. 14 is an exemplary diagram of a discard mode transmission provided by an embodiment of the present application;

fig. 15 is a schematic logic structure diagram of a data transmission device according to an embodiment of the present application;

fig. 16 is a schematic structural diagram of a terminal device provided in an embodiment of the present application;

fig. 17 is a schematic structural diagram of a network device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. In the description of the embodiments of the present application, unless otherwise indicated, "/" indicates that the associated objects are in an "or" relationship, for example, a/B may indicate a or B. In the description of the present application, unless otherwise indicated, "a plurality" means two or more than two. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b, or c may represent: a, b, c, a and b, a and c, b and c, or a and b and c, wherein a, b, c may be single or plural. In addition, in order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, the words "first", "second", and the like are used to distinguish between the technical features that have substantially the same or similar functions and actions. It will be appreciated by those of skill in the art that the words "first," "second," and the like do not limit the amount and order of execution, and that the words "first," "second," and the like do not necessarily differ.

The terms or terms used in the embodiments of the present application will be described first.

(1) Repeated transmission

The repeated transmission can improve the reliability of data transmission, and can be divided into repeated transmission in a time domain, repeated transmission in a frequency domain, repeated transmission in a space domain and the like. In the embodiment of the present application, the repeated transmission in the time domain is described as an example, and the repeated transmission in the time domain can be referred to by the repeated transmission in other resources.

Referring to fig. 1, three exemplary diagrams of repeated transmission in the time domain in a single station scenario are shown. A single station refers to a transmission reception point (transmission reception point, TRP) serving the data transmission of the terminal device.

In fig. 1 (a), TRP 1 is transmitted twice on the same data in the same time domain unit, indicating repeated transmission in the time domain unit. In fig. 1 (b), TRP 1 transmits data in one time domain unit, and retransmits the data in an adjacent time domain unit, indicating repeated transmission between time domain units. In fig. 1 (c), TRP 1 is transmitted twice for the same data in one time domain unit and twice for the data in an adjacent time domain unit, indicating the repetition of transmission in the time domain unit and the repetition of transmission between time domain units.

Referring to fig. 2, three exemplary diagrams of repeated transmission in the time domain in a multi-station scenario are shown. Multi-station refers to a plurality of TRPs serving data transmissions of terminal devices.

In fig. 2 (a), TRP 1 and TRP 2 transmit the same data in the same time domain unit, indicating repeated transmission in the time domain unit. In fig. 2 (b), TRP 1 transmits data in one time domain unit, TRP 2 transmits the data in an adjacent time domain unit, indicating repeated transmission between time domain units. In fig. 2 (c), TRP 1 and TRP 2 transmit the same data in the same time domain unit, and TRP 1 and TRP 2 transmit the data in adjacent time domain units, indicating the repetition of transmission in the time domain unit+the repetition of transmission between time domain units.

The repeated transmission in the multi-station scene can be deployed on the same base station or on different base stations by TRP 1 and TPR 2.

In fig. 1 and 2, the repeated transmission between time domain units is not limited to the repeated transmission between adjacent time domain units, and may be the repeated transmission between non-adjacent time domain units. In other words, the repeated transmission between time domain units refers to repeated transmission between different time domain units. For repeated transmission between time domain units, the same data transmitted in different time domain units may carry the same redundancy version (redundancy version, RV) number, or may carry different RV numbers.

The time domain unit may be a slot (slot), a mini-slot, or the like, where a slot may include a positive integer number of symbols, e.g., 7, 14, 6, or 12, and the mini-slot includes fewer symbols than the slot, e.g., the slot includes 14 symbols and the mini-slot includes 7 symbols. In fig. 1 and 2, a slot including 14 symbols is taken as an example, and a slot including 14 symbols is also taken as an example. Wherein the symbol may be an orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbol, a discrete fourier transform spread orthogonal frequency division multiplexing (discrete Fourier transform spread spectrum orthogonal frequency division multiplexing, DFT-S-OFDM) symbol, or the like. In the embodiments of the present application, OFDM symbols are taken as an example, and other symbols are similar.

(2) Pre-configuring time domain resources, actually receiving time domain resources, actually transmitting time domain resources

The preconfigured time domain resource refers to a time domain resource which is configured or allocated by the network device for the terminal device, is indicated or determined by the resource indication information, and may or may not be an actually used time domain resource. If the pre-configured time domain resource does not overlap with the time domain resource of other data, the pre-configured time domain resource is the actually used time domain resource; if the pre-configured time domain resource and the time domain resource of other data have overlapped time domain resources, the actually used time domain resource depends on the situation and protocol convention.

The actual receiving of the time domain resource refers to the time domain resource actually used by the terminal device for receiving the data under the condition that the preconfigured time domain resource and the time domain resource of other data have overlapping time domain resources. Similarly, the actually transmitted time domain resource refers to a time domain resource actually used by the network device to transmit data in this case.

(3) Overlapping (overlay) time domain resources

In the repeated transmission scene, one TRP can perform repeated transmission on the same data and can also transmit other data, so that overlapping time-frequency resources may exist between time-frequency resources of the repeated transmission data and time-frequency resources of other data, and further the overlapping time-frequency resources are not known to perform repeated transmission or transmit other data, thereby affecting the reliability of the repeated transmission data and affecting the normal transmission of other data.

For example, see fig. 3, which is an exemplary diagram of pre-configured time domain resources and scheduled time domain resources having overlapping time domain resources. In fig. 3, the preconfigured time domain resources are time domain resources configured for the repeatedly transmitted data, indicated or determined by the resource indication information, including time domain resources of each data repeatedly transmitted; the scheduling time domain resource is a time domain resource configured for other data, indicated or determined by the configuration information. After the resource indication information indicates the pre-configured time domain resource, the scheduling time domain resource indicated by the configuration information overlaps with the pre-configured time domain resource, and the overlapping time domain resource is called an overlapping time domain resource. The overlap may be a partial overlap, for example in fig. 3 (a), where the pre-configured time domain resources of the second data of the repeated transmission are partially overlapping with the scheduled time domain resources; the overlap may also be a complete overlap, for example in fig. 3 (b), where the time domain resources of the second data of the repeated transmission are completely overlapping with the scheduled time domain resources.

In fig. 3, the second data of the retransmission is sent by TRP2, and TRP2 transmits other data on the scheduled time domain resource, i.e., the second data of the retransmission and other data are transmitted by the same TRP, and the second data of the actual retransmission and other data may be transmitted by different TRPs. It can be appreciated that the overlapping may be the overlapping of the pre-configured time domain resource and the scheduled time domain resource of the data repeatedly transmitted by the same TRP, or the overlapping of the pre-configured time domain resource and the scheduled time domain resource of the data repeatedly transmitted by TRP 1.

The resource indication information and the configuration information may be transmitted by the same TRP, or may be transmitted by different TRPs, for example, TRP1 transmits the resource indication information and TRP2 transmits the configuration information.

It should be noted that, the name of the overlapping time domain resource is not limited to the embodiments of the present application, for example, may also be referred to as a conflicting time domain resource, and other names for describing the essence of the overlapping time domain resource should also fall within the protection scope of the embodiments of the present application.

The data according to the embodiments of the present application may include, but is not limited to, physical downlink shared channel (physical downlink shared channel, PDSCH) data, physical uplink shared channel (physical uplink shared channel, PUSCH) data, control information, reference signals, and the like. Other data may be understood as non-duplicate transmission data.

(4) Punching mode

The network device transmits data according to the configuration resources, but does not transmit data on some resources in the configuration resources when actually transmitting data, wherein the data transmission mode is to transmit data in a punching mode, and the position of transmitting data in the punching mode is to be the punching position. For the terminal device, if the terminal device does not know that the network device transmits the data in a punching manner, the terminal device can transparently consider that the data exists at the punching position, so that the data is acquired and decoded. If the terminal device knows that the network device transmits data in a puncturing manner and the puncturing position, the terminal device considers that the data with zero bearing power at the puncturing position, namely, receives the data in a puncturing manner.

Because the puncturing positions are usually limited, after the data is encoded, a certain redundancy exists, and the data has cyclic redundancy check (cyclic redundancy check, CRC), so that the accuracy of data decoding is not affected by a small amount of puncturing.

The resources for transmitting data or receiving data in a punctured manner may be time-frequency resources, time-domain resources, frequency-domain resources, space-domain resources, code-domain resources, etc. The embodiment of the application takes time-frequency resources as an example.

For example, when the network device transmits data to the terminal device through some 10 OFDM symbols in the time domain resource, the network device transmits the data in a puncturing manner on a second OFDM symbol of the 10 OFDM symbols, that is, does not transmit the data on the second OFDM symbol, and the second OFDM symbol is a puncturing position. When the terminal equipment decodes the data carried by the 10 OFDM symbols, the data power carried by the second OFDM symbol is considered to be zero.

In fig. 3, the preconfigured time domain resource and the scheduled time domain resource have overlapping time domain resources, so that transmission conflict exists between the repeatedly transmitted data and other data, that is, the network device cannot know whether the repeatedly transmitted data or other data is transmitted on the overlapping time domain resource, and the terminal device cannot know whether the repeatedly transmitted data or other data is carried on the overlapping time domain resource. In view of this, the embodiments of the present application provide a data transmission method and apparatus, where when there is an overlapping time domain resource between a time domain resource of data that is repeatedly transmitted and a time domain resource of other non-repeatedly transmitted data, the other non-repeatedly transmitted data may be preferentially transmitted, so as to avoid transmission collision, thereby ensuring reliability and integrity of data transmission.

The embodiments of the present application may be applied to various communication systems, such as a 5G system, which may also be referred to as a New Radio (NR) system, or may be applied to a device-to-device (D2D) system, a machine-to-machine (machine to machine, M2M) system, or the like. With the continuous development of communication technology, the embodiments of the present application may also be used in future communication systems, such as future networks, etc.

In the third generation partnership project (the 3rd generation partnership project,3GPP), internet of vehicles (vehicle to everything, V2X) technology (X stands for anything) is proposed in which vehicles communicate with anything. The communication modes in the V2X system are collectively referred to as V2X communication. For example, the V2X communication includes: communication between a vehicle and a vehicle (vehicle to vehicle, V2V), communication between a vehicle and roadside infrastructure (vehicle to infrastructure, V2I), communication between a vehicle and a pedestrian (vehicle to pedestrian, V2P), or communication between a vehicle and a network (vehicle to network, V2N), and the like. The communication between the terminal devices involved in the V2X system is widely referred to as a Side Link (SL) communication. The embodiment of the application can also be applied to the internet of vehicles, that is, the terminal device related to the embodiment of the application can also be a vehicle or a vehicle component applied to the vehicle, such as a vehicle-mounted terminal.

Currently, vehicles or vehicle components can timely acquire road condition information or receive service information through a V2V, V2I, V P or V2N communication mode, and the communication modes can be collectively called V2X communication. Fig. 4 is a schematic diagram of a network architecture to which the embodiment of the present application is applied, where the schematic diagram is a schematic diagram of a V2X system. The schematic includes V2V communication, V2P communication, and V2I/N communication. V2X communication is a basic technology and a key technology applied to high-speed equipment represented by vehicles in the scene with very high requirements on communication delay in the future, such as intelligent automobiles, automatic driving, intelligent transportation systems and the like.

As shown in fig. 4, vehicles or vehicle components communicate with each other via V2V. The vehicle or the vehicle component can broadcast the information such as the vehicle speed, the running direction, the specific position, whether the emergency brake is stepped on or not and the like to surrounding vehicles, and the driver of the surrounding vehicles can better sense the traffic condition outside the sight distance by acquiring the information, so that the dangerous condition is pre-judged in advance and avoided; the vehicle or vehicle component communicates with the roadside infrastructure via V2I, and the roadside infrastructure may provide the vehicle or vehicle component with access to various service information and data networks. Wherein, functions such as no-stop charge, in-car entertainment and the like greatly improve traffic intellectualization. Roadside infrastructure, for example, road Side Units (RSUs), include two types: one is an RSU of the terminal equipment type. Because the RSUs are distributed at the roadsides, the RSUs of the terminal equipment type are in a non-moving state, and mobility does not need to be considered; another is an RSU of the network device type. The RSU of the network device type may provide timing synchronization and resource scheduling for vehicles or vehicle components in communication with the network device. The vehicle or vehicle component communicates with the person through V2P; the vehicle or vehicle component communicates with the network via V2N, which may be collectively referred to as V2I/N with V2I described above.

Fig. 5 is a schematic diagram of another network architecture to which the embodiments of the present application are applied. The network architecture may include three network devices and one terminal device, and the number and form of devices shown in fig. 5 are used for illustration and not to limit the embodiments of the present application, and may include one, two or more network devices and two or more terminal devices in practical applications. Wherein: the network device may be operable to communicate with the terminal device over a wireless interface under control of a network device controller (not shown). In some embodiments, the network device controller may be part of the core network or may be integrated into the network device. The network device may be configured to transmit control information or user data to the core network via a backhaul (backhaul) interface. The network devices may also communicate with each other directly or indirectly through a backhaul (backhaul) interface. In addition, multiple network devices may schedule the same terminal device, i.e., a multi-station cooperative transmission scenario. In a multi-station cooperative transmission scenario, the plurality of TRPs serving different terminal devices may be the same or different, for example, the TRPs serving terminal device 1 are TRP1 and TRP2, and the TRPs serving terminal device 2 are TRP2 and TRP3. In the embodiment of the application, a plurality of network devices schedule the same terminal device, so that repeated transmission in the time domain is realized.

The network device according to the embodiment of the present application may be the base device in fig. 4, or may be a base station in an NR system, or may be a base station in a future communication system. The base station may take various forms such as macro base station, micro base station, relay station, access point, TRP, etc. The TRP may be, in one implementation, a network device such as a base station, but also an antenna panel, etc. of a base station. In a 5G system, one or more TRPs may be deployed. In the embodiment of the present application, the means for implementing the function of the network device may be the network device, or may be a device capable of supporting the network device to implement the function, for example, a chip system. In the embodiment of the present application, taking an example that a device for implementing a function of a network device is a network device, a technical solution provided in the embodiment of the present application is described.

The terminal device according to the embodiment of the present application may also be referred to as a terminal, and may be a device having a wireless transceiver function. Terminal devices may be deployed on land, including indoors or outdoors, hand-held or vehicle-mounted; may also be deployed on the surface of water (e.g., a ship, etc.); but may also be deployed in the air (e.g., on aircraft, balloon, satellite, etc.). The terminal device may be a User Equipment (UE). The UE includes a handheld device, an in-vehicle device, a wearable device, or a computing device with wireless communication functionality. The UE may be a mobile phone (mobile phone), a tablet computer, or a computer with a wireless transceiver function, for example. The terminal device may also be a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal in industrial control, a wireless terminal in unmanned, a wireless terminal in telemedicine, a wireless terminal in smart grid, a wireless terminal in smart city, a wireless terminal in smart home, a wireless terminal in internet of things (Internet of things, ioT), a wireless terminal in internet of vehicles, etc. In this embodiment of the present application, the device for implementing the function of the terminal device may be the terminal device, or may be a device capable of supporting the terminal device to implement the function, for example, a chip system. In the embodiment of the application, the chip system may be formed by a chip, and may also include a chip and other discrete devices. In the embodiment of the present application, taking the terminal device as an example of a device for implementing the function of the terminal device, the technical solution provided in the embodiment of the present application is described.

The embodiment of the application can be applied to a scene of multi-station repeated transmission, and also can be applied to a scene of single-station repeated transmission, and the multi-station repeated transmission scene is taken as an example in the concrete introduction. The embodiment of the application is applied to the time domain, when overlapping time domain resources exist between the repeatedly transmitted data and other non-repeatedly transmitted data, the other non-repeatedly transmitted data are preferentially transmitted, and meanwhile a solution for how to perform repeated transmission is provided. The embodiment of the application can also be applied to frequency domains, airspace, code domains and the like.

The network architecture and the service scenario described in the embodiments of the present application are for more clearly describing the technical solution of the embodiments of the present application, and do not constitute a limitation on the technical solution provided in the embodiments of the present application, and those skilled in the art can know that, with the evolution of the network architecture and the appearance of the new service scenario, the technical solution provided in the embodiments of the present application is also applicable to similar technical problems.

Based on the network architecture shown in fig. 4 or fig. 5, the data transmission method provided in the embodiment of the present application will be described in detail below with reference to fig. 6 to fig. 14. In the description, names of information or data interacted between the terminal device and the network device are used as examples, and names of preconfigured resources, scheduled resources, actual receiving resources, actual transmitting resources and the like are also used as examples, which do not limit embodiments of the present application.

Referring to fig. 6, a flow chart of a data transmission method according to an embodiment of the present application is shown, where the flow chart may include, but is not limited to, the following steps:

in step 601, the network device sends resource indication information to the terminal device. Accordingly, the terminal device receives the resource indication information from the network device.

The resource indication information is used for indicating a pre-configured time domain resource of the first downlink data, and the pre-configured time domain resource is used for repeatedly transmitting the first downlink data. The resource indication information may be understood as a time domain resource configured or allocated for indicating the network device to repeatedly transmit the first downlink data to the terminal device. The network device may periodically configure the terminal device with the pre-configured time domain resource of the first downlink data, or semi-statically configure the terminal device with the pre-configured time domain resource of the first downlink data, and then indicate the pre-configured time domain resource by using the resource indication information.

In one possible implementation, the resource indication information is indicated by downlink control information (downlink control information, DCI) which is a dynamic control signaling, and higher layer signaling. The DCI signaling includes a start and length indication (start and length indicator, SLIV), where the SLIV is used to indicate a time domain resource symbol for carrying data of a physical downlink shared channel (physical downlink shared channel, PDSCH) or a physical uplink shared channel (physical uplink shared channel, PUSCH) on one slot (slot), and in the NR system, it specifically indicates from which OFDM symbol of one slot starts to carry data, and from the beginning of the OFDM symbol, how many consecutive OFDM symbols are occupied by the data altogether. In this embodiment, the SLIV is used to indicate a starting OFDM symbol carrying first downlink data and an OFDM symbol length (or referred to as the number of OFDM symbols) occupied by the first downlink data, where the first downlink data is specifically first downlink data in the plurality of first downlink data that is repeatedly transmitted. The higher layer signaling may also be described as a repeated transmission parameter, etc., which may include, but is not limited to, the number of repetitions, a time-domain interval between two adjacent first downlink data, etc. In this manner, the preconfigured time domain resource of each first downlink data of the repeated transmission can be determined according to the higher layer signaling and the SLIV in the DCI.

Among them, PDSCH data may be described as data transmitted through the PDSCH, or may be simply described as the PDSCH. Similarly, PUSCH data may be described as data transmitted over PUSCH, or may be described simply as PUSCH.

In one possible implementation, the resource indication information is indicated by DCI signaling, where the DCI signaling includes a SLIV and a retransmission parameter, and the SLIV and the retransmission parameter are described in the above manner. In this manner, the preconfigured time domain resource of each first downlink data of the repeated transmission can be determined according to the SLIV and the repeated transmission parameter included in the DCI.

In one possible implementation, the resource indication information may directly indicate the preconfigured time domain resource of each first downlink data of the repeated transmission, i.e. the network device configures the time domain resource for each first downlink data of the repeated transmission.

The above three implementations of the resource indication information are used for example, and are not limited to the embodiments of the present application, and other implementations may exist in practical applications.

The preconfigured time domain resources of the first downlink data are a set of time domain resources comprising preconfigured time domain resources of each first downlink data that is repeatedly transmitted. Assuming that N first downlink data are repeatedly transmitted, where N is a positive integer, and the ith first downlink data represents any one of the first downlink data that are repeatedly transmitted, and i is an integer greater than or equal to 1 and less than or equal to N, the preconfigured time domain resources of the first downlink data include time domain resources of the first downlink data, time domain resources of the second first downlink data, …, and time domain resources of the nth first downlink data.

The first downlink data is data sent by the network device to the terminal device, and may be described as PDSCH, PDSCH data, data transmitted through PDSCH, or the like. The first downlink data may also be described as a Transport Block (TB), which carries data, which may be described as PDSCH, PDSCH data, data transmitted through PDSCH, or the like.

It should be noted that, step 601 is an optional step, where the network device may send resource indication information to the terminal device, the terminal device may determine the preconfigured time domain resource of the first downlink data according to the resource indication information, and the terminal device may also determine the preconfigured time domain resource of the first downlink data by other manners.

For a single-station repeated transmission scenario, the network device may configure a preconfigured time domain resource of the first downlink data through one or more of dynamic signaling, periodic signaling, or semi-static signaling, and send resource indication information to the terminal device.

For a multi-station repeated transmission scenario, the network device may configure the pre-configured time domain resources of the first downlink data through one or more of dynamic signaling, periodic signaling or semi-static signaling, and send resource indication information to the terminal device, where each TRP in the multi-station repeated transmission scenario knows the pre-configured time domain resources for transmitting the first downlink data.

In step 602, the terminal device determines a preconfigured time domain resource of the first downlink data.

The terminal device may determine the preconfigured time domain resources of the first downlink data according to the resource indication information, and may specifically determine the preconfigured time domain resources of each first downlink data.

If the resource indication information is indicated by the DCI and the higher layer signaling, the DCI comprises SLIV, and then the terminal equipment determines the initial OFDM symbol of the first downlink data and the length of the OFDM symbol to be occupied according to the SLIV, namely, determines the time domain resource of the first downlink data. Then, the terminal device may determine the time domain resource of the second first downlink data, …, and the time domain resource of the last first downlink data according to the repetition number included in the higher layer signaling, so as to determine the time domain resource of each first downlink data. For example, the N first downlink data are repeatedly transmitted, the number of repetition may be N-1 times or N times, and if the repetition of 1 time is defined as the transmission of two first downlink data, the number of repetition is N-1 times; if the repeated transmission is defined to be 1 time for transmitting 1 first downlink data, the number of repetitions is N. Or, the terminal device may determine the time domain resource of the second first downlink data, …, and the time domain resource of the last first downlink data according to the time domain interval between two adjacent first downlink data included in the higher layer signaling, so as to determine the time domain resource of each first downlink data. The time domain interval between two adjacent first downlink data may be represented by an OFDM symbol, for example, the time domain interval between two adjacent first downlink data is two OFDM symbols. Or, the terminal device may determine the time domain resource of the second first downlink data, …, and the time domain resource of the last first downlink data according to the repetition number included in the higher layer signaling and the time domain interval between two adjacent first downlink data, so as to determine the time domain resource of each first downlink data. The time-domain interval here may represent a symbol interval between start symbols of two adjacent first downlink data, or may represent a symbol interval between an end symbol of an i-th first downlink data and a start symbol of an i+1th first downlink data, where i is less than or equal to N.

If the resource indication information is indicated by DCI, where the DCI includes a SLIV and a repeated transmission parameter, the terminal device determines a time domain resource of the first downlink data according to the SLIV, then determines a time domain resource of the second first downlink data according to the repeated transmission parameter, …, and finally determines the time domain resource of the first downlink data, and further determines the time domain resource of each first downlink data.

If the resource indication information directly indicates the pre-configured time domain resource of each first downlink data which is repeatedly transmitted, the terminal equipment can directly determine the pre-configured time domain resource of each first downlink data which is repeatedly transmitted according to the resource indication information.

In step 603, the network device sends configuration information to the terminal device. Accordingly, the terminal device receives the configuration information from the network device.

After the network device configures the pre-configured time domain resource of the first downlink data for the terminal device, the network device configures the scheduling time domain resource for the terminal device, and indicates the scheduling time domain resource through configuration information, namely the configuration information is used for indicating the scheduling time domain resource. Alternatively, the network device may perform step 603 after performing step 601, or may perform step 603 before step 601.

Alternatively, the scheduling time domain resources may be dynamically configured by the network device for the terminal device, i.e. the scheduling time domain resources are dynamically configured for the terminal device when needed, e.g. aperiodic configuration, etc. The scheduling time domain resources may also be configured by the network device through radio resource control (radio resource control, RRC) signaling, e.g., configured as uplink data according to RRC signaling.

In one possible implementation, the scheduling time domain resource is a time domain resource for transmitting second downlink data, where the second downlink data has a higher priority than the first downlink data. In this manner, the scheduling time domain resources are dynamically configured by the network device for the terminal device.

The second downlink data may be emergency service data, for example. For example, after the network device configures the pre-configured time domain resource of the first downlink data for the terminal device, the network device configures the scheduled time domain resource for transmitting the emergency service data, and indicates through the configuration information, when the emergency service data of a certain emergency service needs to be sent to the terminal device immediately. Since the emergency service data is more urgent than the first downlink data, the priority of the emergency service data can be considered to be higher than the priority of the first downlink data.

Illustratively, the second downlink data may be an aperiodic reference signal, such as an Aperiodic (AP) channel state information reference signal (channel state information reference signal, CSI-RS), a phase tracking reference signal (phase tracking reference signal, PT-RS), a demodulation reference signal (demodulation reference signal, DMRS), and the like. The CSI-RS is a downlink reference signal used for the terminal device to measure channel state information, and the terminal device may report the measured channel state information to the network device. The channel state information may include a channel quality indicator (channel quality indicator, CQI), a precoding matrix indicator (precoding matrix indicator, PMI), a Rank Indication (RI), and the like. The DMRS is used for the related demodulation of control channels and data channels. The PT-RS is used to correct for disturbances due to crystal oscillator phase errors. In the embodiment of the application, an aperiodic reference signal is taken as an AP CSI-RS as an example.

In one possible implementation, the scheduling time domain resources are used for uplink transmission, and may also be described as scheduling time domain resources for carrying uplink data. In this manner, the scheduling time domain resources are configured by the network device through RRC signaling. The terminal device may or may not transmit uplink data on the scheduled time domain resource. The overlapping time domain resource exists between the scheduling time domain resource and the pre-configured time domain resource of the first downlink data, which can be understood that the pre-configured time domain resource of the first downlink data includes the scheduling time domain resource configured to carry uplink data, and the scheduling time domain resource is only used for carrying uplink data and cannot be used for transmission of the first downlink data.

In step 604, the terminal device determines scheduling time domain resources according to the configuration information.

And under the condition that the terminal equipment receives the configuration information, determining the scheduling time domain resource according to the configuration information.

In step 605, the network device determines that there are overlapping time domain resources between the pre-configured time domain resources and the scheduled time domain resources.

After the network device configures the scheduling time domain resource, it may determine whether the pre-configured time domain resource of the first downlink data overlaps (overlap) the scheduling time domain resource, specifically determine whether the pre-configured time domain resource of a certain first downlink data overlaps the scheduling time domain resource, where overlapping includes partially overlapping and fully overlapping, and the partially overlapping may be shown in fig. 3 (a), and the fully overlapping may be shown in fig. 3 (b). If it is determined that the pre-configured time domain resource and the scheduled time domain resource have overlapping time domain resources, optionally, because the priority of the second downlink data is higher than that of the first downlink data, the network device executes step 607 to send the second downlink data on the scheduled time domain resource. If it is determined that the pre-configured time domain resource and the scheduling time domain resource do not have overlapping time domain resources, and optionally, transmission conflict does not exist between the first downlink data and the second downlink data, the network device may send the first downlink data on the pre-configured time domain resource of the first downlink data, and send the second downlink data on the scheduling time domain resource; or alternatively, the first downlink data and the uplink data which are repeatedly transmitted cannot collide, so that the network equipment normally transmits the first downlink data on the preconfigured time domain resource of the first downlink data.

In step 606, the terminal device determines that there is an overlapping time domain resource between the preconfigured time domain resource and the scheduled time domain resource.

The terminal equipment does not immediately receive the first downlink data on the pre-configured time domain resource of the first downlink data after determining the pre-configured time domain resource of the first downlink data, and does not immediately receive the second downlink data on the scheduled time domain resource after determining the scheduled time domain resource, but judges whether the pre-configured time domain resource of the first downlink data is overlapped with the scheduled time domain resource. If it is determined that the pre-configured time domain resource and the scheduled time domain resource have overlapping time domain resources, optionally, because the second downlink data has a higher priority than the first downlink data, the terminal device may execute step 608 to receive the second downlink data on the scheduled time domain resource. If it is determined that the pre-configured time domain resource and the scheduling time domain resource do not have overlapping time domain resources, optionally, transmission conflict does not exist between the first downlink data and the second downlink data which are repeatedly transmitted, the terminal equipment receives the first downlink data on the pre-configured time domain resource of the first downlink data, and receives the second downlink data on the scheduling time domain resource; or alternatively, the first downlink data and the uplink data which are repeatedly transmitted do not collide, so that the terminal equipment normally receives the first downlink data on the preconfigured time domain resource of the first downlink data.

In step 607, the network device sends data on the scheduled time domain resource.

And optionally, when the network equipment determines that the overlapping time domain resource exists, and the scheduling time domain resource is used for transmitting second downlink data, and the second downlink data is higher in priority than the first downlink data, sending the second downlink data to the terminal equipment on the scheduling time domain resource.

In step 608, the terminal device receives the data on the scheduled time domain resource.

And the terminal equipment receives the second downlink data from the network equipment on the scheduling time domain resource under the condition that the overlapping time domain resource exists.

In the embodiment shown in fig. 6, in the case where there is an overlapping time domain resource between the preconfigured time domain resource and the scheduled time domain resource, the second downlink data is preferentially transmitted on the scheduled time domain resource, or the uplink data is carried on the scheduled time domain resource. How the first downlink data of the repeated transmission is transmitted will be described in embodiments one to three.

The pre-configured time domain resource is used for repeatedly transmitting N pieces of first downlink data, the pre-configured time domain resource of the ith first downlink data overlaps with the scheduling time domain resource, N is a positive integer, and i is an integer greater than or equal to 1 and less than or equal to N. Assuming that the first downlink data is repeatedly transmitted in two time domain units, the time domain units may be slots or mini-slots, and in the embodiment of the present application, the time domain units take slots as examples, and one slot includes 14 OFDM symbols as examples.

In a first embodiment, first downlink data is transmitted in a punctured manner over overlapping resources. The network device transmits the first downlink data in a punctured fashion on the overlapping resources. Correspondingly, the terminal equipment receives the first downlink data on the overlapped resources in a punching mode. The overlapping resources may be overlapping time-frequency resources, overlapping frequency-domain resources, overlapping code-domain resources, and the like, in addition to overlapping time-domain resources.

Fig. 7-1 is an exemplary diagram of transmission in a puncturing manner on a time-frequency resource according to an embodiment of the present application. The resource grid shown in fig. 7-1 includes one slot (including 14 OFDM symbols) in the time domain and 12 subcarriers in the frequency domain, and the basic unit of the resource grid is a Resource Element (RE), i.e., a small square. One RE occupies one OFDM symbol in the time domain and one subcarrier in the frequency domain, and one RE may be represented as (k, l), k representing a subcarrier index, and l representing a symbol index. Assuming that the OFDM symbol index and the subcarrier index each start from "0", the preconfigured time-frequency resources of the first downlink data are { (0, 0), (1, 0), (2, 0), (3, 0), (0, 1), (1, 1), (2, 1), (3, 1) }, the preconfigured time-frequency resources of the second first downlink data are { (0, 5), (1, 5), (2, 5), (3, 5), (0, 6), (1, 6), (2, 6), (3, 6) }, the scheduled time-domain resources are { (0, 5), (1, 5), (0, 6), (1, 6) }, and the overlapped time-domain resources are { (0, 5), (1, 5), (0, 6), (1, 6) }. When the network device transmits the second first downlink data on the preconfigured time domain resources of the second first downlink data, the network device transmits the second first downlink data in a puncturing manner on the time-frequency resources { (0, 5), (1, 5), (0, 6), (1, 6) }, and correspondingly, the terminal device receives the second first downlink data in a puncturing manner on the time-frequency resources { (0, 5), (1, 5), (0, 6), (1, 6) }.

Wherein, the time-frequency resource { (0, 5), (1, 5), (0, 6), (1, 6) } is the puncturing position or is described as the punctured RE. If the terminal device does not know that the network device transmits in a puncturing manner, the terminal device considers that the punctured RE carries data, so as to acquire the data for decoding, and the punctured RE is actually an interference, so that the accuracy of calculating the interference is affected. If the terminal device knows that the network device transmits in a puncturing manner, the terminal device considers that the punctured RE carries data with zero power, so that the punctured RE is free from interference, the calculation interference is more accurate, and the influence of puncturing on performance is smaller. If the scheduling time domain resource is the time domain resource of the AP CSI-RS, less RE is occupied by the scheduling time domain resource, so that the influence of punching on the performance is smaller.

The protocol may specify that when the pre-configured resource and the scheduling resource of the first downlink data have overlapping resources, the first downlink data is transmitted in a puncturing manner, so that the terminal device may know that the network device transmits in a puncturing manner, and may also determine a puncturing position (i.e. a position of the overlapping resource) according to the pre-configured resource and the scheduling resource.

Optionally, the network device may also notify the terminal device through signaling (semi-static signaling or dynamic signaling), and when the pre-configured resource of the first downlink data and the scheduling resource have overlapping resources, transmit the first downlink data in a puncturing manner.

In general, puncturing is RE-level puncturing, such as shown in fig. 7-1, on both time-domain OFDM symbols and frequency-domain subcarriers. The puncturing may also be puncturing at the time domain OFDM symbol level or puncturing at the frequency domain subcarrier level.

Fig. 7-2 are exemplary diagrams of transmission in a punctured manner on a time domain resource according to an embodiment of the present application. In fig. 7-2, the preconfigured time domain resources of the second first downlink data overlap with the scheduled time domain resources, i.e. i=2.

For the network device, according to the overlapped time domain resources, determining the actual time domain resources for transmitting the second first downlink data, where the actual time domain resources for transmitting the second first downlink data are preconfigured time domain resources for the second first downlink data. The actual time domain resource for transmitting the second first downlink data includes an overlapping time domain resource, and the network device transmits the second first downlink data on the overlapping time domain resource in a hole punching manner.

For the terminal equipment, according to the overlapped time domain resources, determining the actual received time domain resources of the second first downlink data, wherein the actual received time domain resources of the second first downlink data are the preconfigured time domain resources of the second first downlink data. The actual received time domain resource of the second first downlink data comprises an overlapped time domain resource, and the terminal equipment sends the second first downlink data on the overlapped time domain resource in a punching mode. It can be understood that, when the terminal device is used as the second downlink data or the uplink data carried by the scheduling time domain resource transmission, the second first downlink data is not affected, and the decoding is normal.

The protocol may specify that the network device and the terminal device transmit the ith first downlink data in a hole-punching manner when there is an overlapping time domain resource between the preconfigured time domain resource and the scheduled time domain resource of the ith first downlink data.

Alternatively, if the actual transmission time domain resource of the second first downlink data includes an overlapping time domain resource, and the demodulation reference signal (demodulation reference signal, DMRS) is not carried on the overlapping time domain resource, the network device transmits the second first downlink data on the overlapping time domain resource in a punctured manner. Correspondingly, the terminal equipment receives the second first downlink data on the overlapped time domain resources in a punching mode. The DMRS may be a DMRS corresponding to the PDSCH, which is used for downlink channel estimation for PDSCH coherent demodulation, that is, downlink channel estimation for first downlink data coherent demodulation. The DMRS may be embedded in the time domain resource of the PDSCH, i.e., the first downlink data may be configured to carry the DMRS on the time domain resource of the PDSCH, or may not be embedded in the time domain resource of the PDSCH, depending on the situation. The overlapping time domain resources do not bear DMRS, which means that the second downlink data does not affect channel estimation of the second first downlink data, so that the DMRS is transmitted on the overlapping time domain resources in a puncturing manner. If the DMRS is carried on the overlapped time domain resource, this means that the second downlink data affects the channel estimation of the second first downlink data, in this case, embodiment two or embodiment three may be adopted.

In fig. 7-2 (a), the preconfigured time domain resource of the second downlink data is the eighth and ninth OFDM symbols of the first slot, the scheduled time domain resource is the eighth OFDM symbol of the first slot, and then the eighth OFDM symbol of the first slot is the overlapping time domain resource. The network device transmits the second first downlink data on the eighth and ninth OFDM symbols of the first slot in a punctured manner on the eighth OFDM symbol. Correspondingly, when the terminal equipment receives the second first downlink data on the eighth and ninth OFDM symbols of the first slot, the terminal equipment receives the second first downlink data on the eighth OFDM symbol in a punching mode.

In (b) of fig. 7-2, the preconfigured time domain resources of the second downlink data are the eighth and ninth OFDM symbols of the first slot, the scheduled time domain resources are the eighth and ninth OFDM symbols of the first slot, and then the eighth and ninth OFDM symbols of the first slot are overlapping time domain resources. The network device transmits the second first downlink data on the eighth and ninth OFDM symbols of the first slot in a punctured manner. Correspondingly, when the terminal equipment receives the second first downlink data on the eighth and ninth OFDM symbols of the first slot, the terminal equipment receives the second first downlink data on the eighth and ninth OFDM symbols in a punching mode.

Fig. 7-2 (a) is transmitted in a punctured fashion when partially overlapped, and fig. 7-2 (b) is transmitted in a punctured fashion when fully overlapped.

When the preconfigured time domain resource and the scheduling time domain resource of the ith first downlink data have overlapped time domain resources, the ith first downlink data are transmitted in a punching mode, so that the interference calculated by the terminal equipment is more accurate, and the influence on the performance is reduced.

For the repeated transmission scene, if the preconfigured time domain resource of the ith first downlink data and the scheduling time domain resource have overlapped time domain resources, the ith first downlink data is transmitted in a punching mode. Further alternatively, the scheme may be applied in a multi-station retransmission scenario, for example, the transmission configuration indicator (transmission configuration indication, TCI) status for the current retransmission is more than 1, which may be considered as a multi-station retransmission scenario; for example, there are multiple quasi co-located (QCL) states for the current retransmission, which may be considered a multi-station retransmission scenario.

In a multi-station retransmission scenario, under the condition that an ideal backhaul (ideal backhaul) link exists between a plurality of TRPs, the plurality of TRPs can directly communicate with each other, so that the TRP transmitting the ith first downlink data can communicate with other TRPs to obtain whether the pre-configured time domain resource and the scheduling time domain resource of the other TRPs have overlapping time domain resources, for example, whether the pre-configured time domain resource of the ith first downlink data and the scheduling time domain resource have overlapping time domain resources or not can be obtained, and whether the ith first downlink data is transmitted in a punching manner or not. When a non-ideal backhaul (non ideal backhaul) link exists between the plurality of TRPs, the plurality of TRPs can be scheduled through feedback of the terminal equipment when being repeatedly transmitted, for example, TRP 1 configures TRP 2 to transmit the ith first downlink data, when the pre-configured time domain resource of the ith first downlink data and the scheduled time domain resource have overlapping time domain resources, the terminal equipment feeds back indication information that the time domain resource of the ith first downlink data and the scheduled time domain resource have overlapping to the TRP 2, and when the indication information is received, the TRP 2 transmits the ith first downlink data in a punching mode. The processing in both cases also applies to the subsequent two embodiments.

In the second embodiment, the network device avoids the scheduled time domain resource to transmit the first downlink data, and correspondingly, the terminal device avoids the scheduled time domain resource to receive the first downlink data, so that the actual time domain resource of the first downlink data is not overlapped with the scheduled time domain resource, and resource conflict is avoided. The embodiment of the present application uses this mode as a collision-free mode, and the collision-free mode can be divided into four collision-free modes, and the four collision-free modes will be described below through fig. 8-11.

Conflict-free mode one

And for the network equipment, determining the actual transmission time domain resource of each first downlink data according to the overlapped time domain resource, and transmitting the second first downlink data on the actual transmission time domain resource of each first downlink data. Wherein, the actual time domain resource of sending each first downlink data is not overlapped with the scheduling time domain resource. The network device may determine the pre-configured time domain resource of each first downlink data after the moving as the actual transmission time domain resource of each first downlink data by moving the pre-configured time domain resource of each first downlink data.

And for the terminal equipment, determining the actual receiving time domain resource of each first downlink data according to the overlapped time domain resource, and receiving the second first downlink data on the actual receiving time domain resource of each first downlink data. Wherein, the actual received time domain resource and the scheduled time domain resource of each first downlink data are not overlapped.

The protocol may specify that when the pre-configured resources of the first downlink data and the scheduled time domain resources have overlapping resources, the network device moves the pre-configured time domain resources of each first downlink data based on the overlapping time domain resources to obtain actual transmission time domain resources of each first downlink data, where the actual transmission time domain resources of each first downlink data are not overlapped with the scheduled time domain resources. Correspondingly, the terminal equipment moves the pre-configured time domain resource of each first downlink data based on the overlapped time domain resource to obtain the actual receiving time domain resource of each first downlink data, wherein the actual receiving time domain resource of each first downlink data is not overlapped with the scheduling time domain resource.

Before moving, the network device and the terminal device need to determine a movement rule, for example, the movement rule is to move forward by M symbols, and for example, the movement rule is to move backward by M symbols. Assuming that the preconfigured time domain resource of the ith first downlink data and the scheduling time domain resource have overlapping time domain resources, the value of M is related to the moving direction, the position of the preconfigured time domain resource of the ith first downlink data and the position of the scheduling time domain resource. For example, moving backward, M is a symbol length occupied from a start symbol of the preconfigured time domain resource of the ith first downlink data to a last symbol of the scheduled time domain resource, and the symbol length is a positive integer. For another example, moving forward, M is a symbol length from a last symbol of the preconfigured time domain resource of the ith first downlink data to a start symbol of the scheduled time domain resource, and the symbol length is a positive integer.

When determining the movement rule, the network device and the terminal device need to avoid that the pre-configured time domain resource of the j-th first downlink data after movement overlaps with the pre-configured time domain resource of the j-1 th first downlink data after movement, overlaps with the pre-configured time domain resource of the j+1-th first downlink data after movement, overlaps with the scheduling time domain resource, and overlaps with the time domain resource of other signals or data. The jth first downlink data is any one of the N first downlink data. When determining the movement rule, the pre-configured time domain resource of the j-th downlink data after movement needs to be avoided from crossing the slot boundary, because the terminal equipment does not expect to receive the first downlink data across slots.

After determining the movement rule, the network device and the terminal device can move the preconfigured time domain resources of each first downlink data, and ensure that the actual time domain resources of each first downlink data are not overlapped with the scheduling time domain resources, are not overlapped with the time domain resources of other signals or data, and are also ensured not to be overlapped between the actual time domain resources of two adjacent first downlink data. A movement rule, for example, M symbols moved backward, may also be specified in the protocol, and then the network device and the terminal device may move M symbols for each preconfigured time domain resource of the first downlink data according to the movement rule.

It can be appreciated that the collision-free manner is a manner of integrally moving the preconfigured time domain resources of the first downlink data to avoid overlapping with the scheduled time domain resources.

Taking the whole backward shift as an example. Referring to fig. 8, an exemplary diagram of a collision-free manner one according to an embodiment of the present application is provided. In fig. 8, the preconfigured time domain resources of the second first downlink data overlap with the scheduled time domain resources, i.e. i=2.

Illustratively, in fig. 8 (a), the preconfigured time domain resource of the second first downlink data is the ninth and tenth OFDM symbols of the first slot, the scheduled time domain resource is the tenth OFDM symbol of the first slot, and then the tenth OFDM symbol of the first slot is the overlapping time domain resource, where m=2. Based on the overlapped time domain resources, the pre-configured time domain resources of each first downlink data are moved backwards by two OFDM symbols to obtain the actual time domain resources of each first downlink data, the actual time domain resources of each first downlink data are not overlapped with the scheduling time domain resources, and the actual time domain resources of two adjacent first downlink data are not overlapped. Fig. 8 (a) exemplifies shifting back two OFDM symbols as a whole, and the shifting rule is shifting back two OFDM symbols. If the moving direction is forward, the whole moves forward by one OFDM symbol, and the moving rule is forward by one OFDM symbol.

In fig. 8 (b), the preconfigured time domain resources of the second downlink data are the ninth and tenth OFDM symbols of the first slot, the scheduled time domain resource is the ninth OFDM symbol of the first slot, and then the ninth OFDM symbol of the first slot is the overlapping time domain resource, where m=1. Based on the overlapped time domain resources, the preconfigured time domain resources of each first downlink data are moved backwards by one OFDM symbol, so that the actual time domain resources of each first downlink data are obtained, the actual time domain resources of each first downlink data are not overlapped with the scheduling time domain resources, and the actual time domain resources of two adjacent first downlink data are not overlapped. Fig. 8 (b) exemplifies shifting one OFDM symbol backward as a whole, and the shifting rule is shifting one OFDM symbol backward. If the moving direction is forward, the whole moves forward by two OFDM symbols, and the moving rule is to move forward by two OFDM symbols.

When the preconfigured time domain resource and the scheduling time domain resource of the ith first downlink data have overlapping time domain resources, each first downlink data is transmitted in a collision-free mode, so that the actual time domain resource and the scheduling time domain resource of each first downlink data are not overlapped, and transmission collision between each first downlink data and the second downlink data is avoided.

Conflict-free mode two

Please refer to fig. 9, which is a diagram illustrating a second example of a collision-free manner according to an embodiment of the present application. In fig. 9, the preconfigured time domain resources of the second first downlink data overlap with the scheduled time domain resources, i.e., i=2.

And for the network equipment, determining the actual transmission time domain resource of the second first downlink data according to the overlapped time domain resource, and transmitting the second first downlink data on the actual transmission time domain resource of the second first downlink data. Wherein the actual transmission time domain resource of the second first downlink data does not overlap with the scheduling time domain resource. The network device may determine the moved pre-configured time domain resource of the second first downlink data as an actual transmission time domain resource of the second first downlink data by moving the pre-configured time domain resource of the second first downlink data.

And for the terminal equipment, determining the actual receiving time domain resource of the second first downlink data according to the overlapped time domain resource, and receiving the second first downlink data on the actual receiving time domain resource of the second first downlink data. Wherein the actual received time domain resource of the second first downlink data does not overlap with the scheduled time domain resource. The terminal device may search for available time domain resources before and after overlapping the time domain resources, thereby determining an actual received time domain resource of the second first downlink data.

The protocol may specify that when the preconfigured time domain resource of the ith first downlink data and the scheduling time domain resource have overlapping time domain resources, the network device moves the preconfigured time domain resource of the ith first downlink data based on the overlapping time domain resources to obtain an actual transmission time domain resource of the ith first downlink data, and the actual transmission time domain resource of the ith first downlink data is not overlapped with the scheduling time domain resource. Correspondingly, the terminal equipment moves the preconfigured time domain resource of the ith first downlink data based on the overlapped time domain resource to obtain the actual received time domain resource of the ith first downlink data, wherein the actual received time domain resource of the ith first downlink data is not overlapped with the scheduled time domain resource. The protocol may further define a movement rule of the preconfigured time domain resource for the ith first downlink data, for example, the movement rule is that M symbols are moved backward, where M is a symbol length from a start symbol of the preconfigured time domain resource of the ith first downlink data to a last symbol of the scheduled time domain resource, and the symbol length is a positive integer. And (3) backward shifting the preconfigured time domain resource of the ith first downlink data by M symbols to obtain the actual time domain resource of the ith first downlink data, wherein the actual time domain resource of the ith first downlink data is not overlapped with the scheduling time domain resource, is not overlapped with the (i+1) th time domain resource, and is also not overlapped with the time domain resource of other signals or data. And, the actual time domain resource of the ith first downlink data should avoid crossing the slot boundary, because the terminal device does not expect to receive the first downlink data across slots. If a certain first downlink data of the repeated transmission encounters a slot boundary, the actual time domain resource of the first downlink data is smaller than the preconfigured time domain resource of the first downlink data.

It can be understood that the collision-free mode two is a mode of moving the preconfigured time domain resource of the ith first downlink data corresponding to the overlapped time domain resource to avoid overlapping with the scheduled time domain resource. I.e. to move a preconfigured time domain resource of the first downlink data.

The backward movement of the preconfigured time domain resources of one first downlink data is taken as an example.

In fig. 9 (a), the preconfigured time domain resource of the second downlink data is the ninth and tenth OFDM symbols of the first slot, the scheduled time domain resource is the tenth OFDM symbol of the first slot, and then the tenth OFDM symbol of the first slot is the overlapping time domain resource, where m=2. Based on the overlapped time domain resource, the preconfigured time domain resource of the second first downlink data is moved back by two OFDM symbols, so that the actual time domain resource of the second first downlink data is obtained, and the eleventh and twelfth OFDM symbols of the first slot are not overlapped with the scheduled time domain resource.

In fig. 9 (b), the preconfigured time domain resources of the second downlink data are the ninth and tenth OFDM symbols of the first slot, the scheduled time domain resource is the ninth OFDM symbol of the first slot, and then the ninth OFDM symbol of the first slot is the overlapping time domain resource, where m=1. Based on the overlapped time domain resource, the preconfigured time domain resource of the second first downlink data is moved backwards by one OFDM symbol, so that the actual time domain resource of the second first downlink data is obtained, and the actual time domain resource is the tenth and eleventh OFDM symbols of the first slot, and is not overlapped with the scheduled time domain resource.

Illustratively, in fig. 9 (c), the preconfigured time domain resources of the second first downlink data are the ninth and tenth OFDM symbols of the first slot, the scheduled time domain resources are the ninth and tenth OFDM symbols of the first slot, and then the ninth and tenth OFDM symbols of the first slot are overlapping time domain resources, where m=2. Based on the overlapped time domain resource, the preconfigured time domain resource of the second first downlink data is moved back by two OFDM symbols, so that the actual time domain resource of the second first downlink data is obtained, and the eleventh and twelfth OFDM symbols of the first slot are not overlapped with the scheduled time domain resource.

Fig. 9 (a) and 9 (b) are transmitted in a collision-free manner when they are partially overlapped, and fig. 9 (c) is transmitted in a collision-free manner when they are fully overlapped.

In fig. 9, the size of the actual time domain resource of the second first downlink data is identical to the size of the preconfigured time domain resource of the second first downlink data, and is two OFDM symbols. After determining M, the size of the actual time domain resource of the ith first downlink data may be inconsistent with the size of the preconfigured time domain resource of the ith first downlink data, which may be described later for a special case.

When the preconfigured time domain resource of the ith first downlink data and the scheduling time domain resource have overlapping time domain resources, the ith first downlink data is transmitted in a collision-free mode, so that the actual time domain resource of the ith first downlink data and the scheduling time domain resource are not overlapped, and transmission collision between the ith first downlink data and the second downlink data is avoided.

Conflict-free mode III

Referring to fig. 10, an exemplary diagram of a collision-free manner three is provided in an embodiment of the present application. In fig. 10, the preconfigured time domain resources of the second first downlink data overlap with the scheduled time domain resources, i.e., i=2. The conflict-free mode III is different from the conflict-free mode I and the conflict-free mode II in that the conflict-free mode III is local movement, the conflict-free mode I is integral movement, and the conflict-free mode II is movement one. In the third collision-free mode, the preconfigured time domain resource of the ith first downlink data and the preconfigured time domain resource of the subsequent first downlink data are moved. The subsequent first downlink data refers to the first downlink data after the ith first downlink data. The movement rule in the collision-free mode three can be referred to the movement rule in the collision-free mode one and the collision-free mode two, and the actual time domain resource of the ith first downlink data and the actual time domain resource of the subsequent first downlink data should avoid crossing the slot boundary, because the terminal device does not expect to receive the first downlink data across slots. If a certain first downlink data of the repeated transmission encounters a slot boundary, the actual time domain resource of the first downlink data is smaller than the preconfigured time domain resource of the first downlink data.

Illustratively, in fig. 10 (a), the preconfigured time domain resource of the second first downlink data is the ninth and tenth OFDM symbols of the first slot, the scheduled time domain resource is the tenth OFDM symbol of the first slot, and then the tenth OFDM symbol of the first slot is the overlapping time domain resource, where m=2. Based on the overlapped time domain resource, the preconfigured time domain resource of the second first downlink data is moved back by two OFDM symbols, so that the actual time domain resource of the second first downlink data is obtained, and the eleventh and twelfth OFDM symbols of the first slot are not overlapped with the scheduled time domain resource. Meanwhile, the preconfigured time domain resource of the third first downlink data is moved back by two OFDM symbols, so that the actual time domain resource of the third downlink data is obtained and is the fifth and sixth OFDM symbols of the second slot; and (3) backward shifting the preconfigured time domain resource of the fourth first downlink data by two OFDM symbols to obtain the actual time domain resource of the fourth first downlink data, wherein the actual time domain resource is the eleventh and twelfth OFDM symbols of the second slot. If there is first downlink data after the fourth first downlink data, the preconfigured time domain resource of each subsequent first downlink data is also shifted by two OFDM symbols.

In fig. 10 (b), the preconfigured time domain resources of the second downlink data are the ninth and tenth OFDM symbols of the first slot, the scheduled time domain resource is the ninth OFDM symbol of the first slot, and then the ninth OFDM symbol of the first slot is the overlapping time domain resource, where m=1. Based on the overlapped time domain resource, the preconfigured time domain resource of the second first downlink data is moved backwards by one OFDM symbol, so that the actual time domain resource of the second first downlink data is obtained, and the actual time domain resource is the tenth and eleventh OFDM symbols of the first slot, and is not overlapped with the scheduled time domain resource. Meanwhile, the preconfigured time domain resource of the third first downlink data is moved back by two OFDM symbols, so that the actual time domain resource of the third downlink data is obtained and is the fourth OFDM symbol and the fifth OFDM symbol of the second slot; and (3) backward shifting the preconfigured time domain resource of the fourth first downlink data by two OFDM symbols to obtain the actual time domain resource of the fourth first downlink data, wherein the actual time domain resource is the tenth and eleventh OFDM symbols of the second slot. If there is first downlink data after the fourth first downlink data, the preconfigured time domain resource of each subsequent first downlink data is further shifted by one OFDM symbol.

When the preconfigured time domain resource of the ith first downlink data and the scheduling time domain resource have overlapping time domain resources, the ith first downlink data and subsequent first downlink data are transmitted in a collision-free mode, so that the actual time domain resource of the ith first downlink data and the actual time domain resource of each subsequent first downlink data are not overlapped with the scheduling time domain resource, and transmission collision between the first downlink data and the second downlink data is avoided.

Conflict-free mode four

Please refer to fig. 11, which is a schematic diagram illustrating a collision-free manner four according to an embodiment of the present application. In fig. 11, the preconfigured time domain resources of the second first downlink data overlap with the scheduled time domain resources, i.e., i=2. The conflict-free mode IV is different from the conflict-free mode II in that the conflict-free mode II is to move all pre-configured time domain resources of the second first downlink data, and the conflict-free mode IV is to move part of the pre-configured time domain resources of the second first downlink data. The movement rule in the collision-free mode four is, for example, to move back the preconfigured time domain resource starting from the overlapped time domain resource in the preconfigured time domain resource of the second first downlink data by M symbols, where M represents the symbol length of the overlapped time domain resource, and the symbol length is a positive integer.

In fig. 11, the preconfigured time domain resource of the first downlink data is the third to seventh OFDM symbols of the first slot, and the time domain resource is the fourth and fifth OFDM symbols of the first slot, so that the fourth and fifth OFDM symbols of the first slot are overlapping time domain resources, and m=2. Based on the overlapped time domain resource, 2 symbols are locally moved on the basis of the preconfigured time domain resource of the first downlink data, so that the actual time domain resource of the first downlink data is obtained, and the third, sixth to ninth OFDM symbols of the first slot are not overlapped with the scheduled time domain resource.

Fig. 11 illustrates moving the partially pre-configured time domain resources of one first downlink data, and further, the partially pre-configured time domain resources of each first downlink data may be moved, for example, the partially pre-configured time domain resources of the second first downlink data in fig. 11 may be moved.

As can be seen from fig. 8 to fig. 11, when there is an overlapping time domain resource between the preconfigured time domain resource of the ith first downlink data and the scheduled time domain resource, the preconfigured time domain resource of the first downlink data can be moved as a whole, the preconfigured time domain resource of the ith first downlink data can be moved, and the preconfigured time domain resource of a part of the first downlink data can be moved. When the pre-configured time domain resource of a certain first downlink data is moved, all the pre-configured time domain resources of the first downlink data can be moved, part of the pre-configured time domain resources of the first downlink data can be moved forward, and part of the pre-configured time domain resources of the first downlink data can be moved backward.

In fig. 8-11, the actual time domain resource of the second first downlink data and the time domain resource of the scheduled transmission resource belong to the same slot, that is, belong to the same time domain unit, and the size of the actual time domain resource of the second first downlink data is consistent with the size of the preconfigured time domain resource thereof. However, a special situation may occur when the first downlink data is transmitted in a collision-free manner, where the actual time domain resource of a certain first downlink data spans a slot boundary, and the size of the actual time domain resource of the first downlink data is inconsistent with the size of the preconfigured time domain resource of the first downlink data because the terminal device does not expect to receive the first downlink data across slots. In view of this, the present embodiments provide the following two solutions.

In one aspect, a modulation and coding scheme (modulation and coding scheme, MCS) is adjusted, and the ith first downlink data is transmitted on an actual time domain resource of the ith first downlink data according to the MCS. In this embodiment of the present application, the MCS before adjustment may be referred to as a first MCS, and the MCS after adjustment may be referred to as a second MCS, where the first MCS is different from the second MCS. The index of the first MCS may be included in the DCI or the index of the first MCS may be indicated by the DCI. The correspondence between the index of MCS, modulation order and code rate can be seen in table 1. Table 1 is merely a MCS table in a protocol, and the present invention is not limited to this table, which is merely an example.

TABLE 1

For example, referring to fig. 12, a transmission example diagram in a special case is provided in an embodiment of the present application. In fig. 12, the preconfigured time domain resources of the second first downlink data overlap with the scheduled time domain resources, i.e., i=2; the preconfigured time domain resource of the second first downlink data is the thirteenth and fourteenth OFDM symbols of the first slot, the scheduled time domain resource is the thirteenth OFDM symbol of the first slot, and then the thirteenth OFDM symbol of the first slot is the overlapping time domain resource. Based on the overlapped time domain resources, after the preconfigured time domain resources of the second first downlink data are shifted backward by one OFDM symbol, the occupied time domain resources are a fourteenth OFDM symbol of the first slot and a first OFDM symbol of the second slot, but the terminal equipment does not expect to receive the first downlink data across slots, so that the actual time domain resources of the second first downlink data are the fourteenth OFDM symbol of the first slot. The actual number of time domain resources (one OFDM symbol) of the second first downlink data is now smaller than the number of pre-configured time domain resources (two OFDM symbols) of the second first downlink data.

For the network device, adjusting the MCS, using a first MCS to transmit first downlink data on the pre-configured time domain resource of the first downlink data, and using a second MCS to transmit second first downlink data on the actual time domain resource of the second first downlink data, wherein the first MCS is different from the second MCS. The protocol may specify that the first MCS and the second MCS have the same modulation scheme and different coding rates. Because of the repeated transmission, the transport block size of each first downlink data transmitted is the same. The network equipment determines the size of the first downlink data according to the modulation mode corresponding to the first MCS, the coding rate of the first MCS and the time-frequency resource occupied by the first downlink data. The transport block size of the first downstream data is the same as the transport block size of the second first downstream data, and the transport block size of the second first downstream data is determined. And determining the coding rate of the second first downlink data according to the size of the transmission block of the second first downlink data, the modulation mode corresponding to the second MCS and the time-frequency resource occupied by the second first downlink data.

For the terminal equipment, determining a first MCS according to the DCI, and determining the size of a transmission block of the first downlink data according to a modulation mode corresponding to the first MCS, the coding rate of the first MCS and the resource indication information. Due to the repeated transmission, the transport block size of the first downlink data is the transport block size of the second first downlink data. The modulation scheme is unchanged, and then the modulation scheme corresponding to the first MCS is the modulation scheme corresponding to the second MCS. And determining the coding rate of the second MCS according to the actual received time domain resource of the second first downlink data, the size of the transmission block of the second first downlink data and the modulation mode corresponding to the second MCS. And finally, the terminal equipment decodes the second first downlink data received on the actual received time domain resource of the second first downlink data according to the modulation mode corresponding to the second MCS and the coding rate of the second MCS, and decodes the first downlink data received on the preconfigured time domain resource of the first downlink data according to the modulation mode corresponding to the first MCS and the coding rate of the first MCS.

Alternatively, the protocol may define a threshold for the encoding rate, which may be, for example, 0.75, 0.93, or 1, etc. If the coding rate of the ith first downlink data calculated by the network equipment according to the method exceeds a threshold value, the network equipment does not send the configured ith first downlink data, or the terminal equipment does not receive the configured ith first downlink data, or the network equipment does not send the configured ith first downlink data, and the terminal equipment does not receive the configured ith first downlink data.

The modulation mode may include, but is not limited to, quadrature phase shift keying (quadrature phase shift keying, QPSK) modulation, binary phase shift keying (binary phase shift keying, BPSK) modulation, pulse-amplitude modulation (PAM) modulation, quadrature amplitude modulation (quadrature amplitude modulation, QAM), or the like.

The above-mentioned modulation schemes of the first MCS and the second MCS are the same, and the coding rates are different, for example, or the modulation schemes and the coding rates may be different, depending on the case.

In this special case, the network device and the terminal device may adjust the MCS to transmit the ith first downlink data, or the protocol may adjust the MCS in a manner, for example, the modulation scheme is not changed, and the coding rate is changed. The protocol may further specify that the network device and the terminal device adjust the MCS to transmit the first downlink data when the size of the actual time domain resource of any one of the first downlink data is inconsistent with the size of the pre-configured time domain resource.

In the second mode, the ith first downlink data is discarded.

For the network device, when the number of actual time domain resources of the ith first downlink data is smaller than the preconfigured time domain resources of the ith first downlink data, the ith first downlink data is not transmitted. If the configuration repeatedly transmits the N first downlink data, the number of actually transmitted first downlink data by the network device is smaller than N. It can be appreciated that the network device actually transmits N-1 first downlink data on the preconfigured time domain resources except for the ith first downlink data in the preconfigured time domain resources.

For the terminal device, when the number of the actual time domain resources of the ith first downlink data is smaller than the preconfigured time domain resources of the ith first downlink data, the ith first downlink data is not received on the actual time domain resources of the ith first downlink data. If the configuration is repeated to transmit N pieces of first downlink data, the actual terminal equipment receives N-1 pieces of first downlink data. It can be understood that the terminal device actually receives N-1 first downlink data on the preconfigured time domain resources except for the preconfigured time domain resource of the ith first downlink data in the preconfigured time domain resources.

In the special case, the network device may not transmit the ith first downlink data, and the terminal device ignores the preconfigured time domain resource of the ith first downlink data.

For example, referring to fig. 13, another transmission example diagram in a special case is provided in an embodiment of the present application. In fig. 13, the preconfigured time domain resources of the second first downlink data overlap with the scheduled time domain resources, i.e., i=2; the preconfigured time domain resource of the second first downlink data is the thirteenth and fourteenth OFDM symbols of the first slot, the scheduled time domain resource is the thirteenth OFDM symbol of the first slot, and then the thirteenth OFDM symbol of the first slot is the overlapping time domain resource. Based on the overlapping time domain resources and the time domain size (e.g., two OFDM symbols) of the first downlink data, after one OFDM symbol is shifted back on the basis of the preconfigured time domain resources of the second first downlink data, the occupied time domain resources are the fourteenth OFDM symbol of the first slot and the first OFDM symbol of the second slot, but the terminal device does not expect to receive the first downlink data across slots, so that the network device does not send the second first downlink data on the preconfigured time domain resources of the second first downlink data. In fig. 13, the configured pre-configured time domain resource is used to transmit 4 first downlink data, and the actual network device transmits 3 first downlink data, and the corresponding terminal device actually receives 3 first downlink data.

In the third embodiment, the network device does not send the configured ith first downlink data. This mode is referred to as the discard mode in the embodiments of the present application.

Please refer to fig. 14, which is a schematic diagram of a discard mode transmission according to an embodiment of the present application. In fig. 14, the preconfigured time domain resources of the second first downlink data overlap with the scheduled time domain resources, i.e., i=2.

For the network device, no configured ith first downlink data is transmitted. If the configuration repeatedly transmits the N first downlink data, the number of actually transmitted first downlink data by the network device is smaller than N. It can be appreciated that the network device actually transmits N-1 first downlink data on the preconfigured time domain resources except for the ith first downlink data in the preconfigured time domain resources.

For the terminal device, the ith first downlink data is not received on the preconfigured time domain resource of the ith first downlink data. If the configuration is repeated to transmit N pieces of first downlink data, the actual terminal equipment receives N-1 pieces of first downlink data. It can be understood that the terminal device actually receives N-1 first downlink data on the preconfigured time domain resources except for the preconfigured time domain resource of the ith first downlink data in the preconfigured time domain resources.

The protocol may specify that when the preconfigured time domain resource of the ith first downlink data and the scheduled time domain resource have overlapping time domain resources, the network device does not send the configured ith first downlink data, and the terminal device ignores the preconfigured time domain resource of the ith first downlink data.

Illustratively, in fig. 14, the preconfigured time domain resource of the second first downlink data is the eighth and ninth OFDM symbols of the first slot, the scheduled time domain resource is the eighth OFDM symbol of the first slot, and then the eighth OFDM symbol of the first slot is the overlapping time domain resource. The network device does not transmit the second first downlink data on the preconfigured time domain resources of the second first downlink data, i.e. does not transmit the second first downlink data on the eighth and ninth OFDM symbols of the first slot. In fig. 14, the configured pre-configured time domain resource is used to transmit 4 first downlink data, and the actual network device transmits 3 first downlink data, and the corresponding terminal device actually receives 3 first downlink data.

Note that the actual time domain resources in fig. 8 to 14 are actually transmitted time domain resources for the network device and actually received time domain resources for the terminal device.

When the embodiment of the application is applied to a multi-station retransmission scenario, before executing the embodiment shown in fig. 6, the network device may send TCI information to the terminal device, where the TCI information is used to indicate a plurality of activated TCI states. The plurality of active TCI states means that a plurality of TRPs participate in cooperation with the repeated transmission of the terminal device, and that there are several active TCI states indicating several TRPs. When the terminal device receives the TCI information, it may determine, according to the plurality of activated TCI states, that the first downlink data is from a plurality of TRPs, that is, determine a scenario in which multiple stations repeat transmission is performed.

Optionally, the network device configures a plurality of QCL states for the terminal device, and the terminal device may determine a scenario in multi-station repeated transmission according to the plurality of QCL states.

Referring to fig. 6 to fig. 14, in the embodiment of the present application, there is an overlapping time domain resource between the preconfigured time domain resource and the scheduled time domain resource of the ith first downlink data, and the second downlink data is preferentially transmitted or the uplink data is preferentially carried, so that the overlapping of the actual time domain resource and the scheduled time domain resource of the ith first downlink data can be avoided through the first embodiment, the second embodiment or the third embodiment, and thus, transmission collision in a repeated transmission scenario is avoided.

In the embodiments provided in the present application, the method provided in the embodiments of the present application is described from the perspective of the network device, the terminal device, and the interaction between the network device and the terminal device, respectively. In order to implement the functions in the methods provided in the embodiments of the present application, the network device and the terminal device may include hardware structures and/or software modules, and implement the functions in the form of hardware structures, software modules, or a combination of hardware structures and software modules. Some of the functions described above are performed in a hardware configuration, a software module, or a combination of hardware and software modules, depending on the specific application of the solution and design constraints.

Fig. 15 is a schematic logic structure diagram of a data transmission device according to an embodiment of the present application. In fig. 15, the data transmission apparatus 70 includes a processing unit 701 and a communication unit 702. The data transmission device can realize the functions of the terminal equipment in the embodiment of the application and also can realize the functions of the network equipment in the embodiment of the application.

In the case where the data transmission device 70 is used to realize the functions of the terminal apparatus:

a processing unit 701, configured to determine a preconfigured time domain resource of the first downlink data, where the preconfigured time domain resource is used for repeatedly transmitting the first downlink data;

a communication unit 702 for receiving configuration information;

a processing unit 701, configured to determine a scheduling time domain resource according to the configuration information;

the communication unit 702 is further configured to transmit data on the scheduled time domain resource when the processing unit determines that the pre-configured time domain resource and the scheduled time domain resource have overlapping time domain resources.

Optionally, the scheduling time domain resource is a time domain resource for transmitting second downlink data, where the priority of the second downlink data is higher than the priority of the first downlink data.

Optionally, the configuration information indicates scheduling time domain resources for uplink transmission.

Optionally, the processing unit 701 is further configured to determine an actual received time domain resource of the first downlink data according to the overlapping time domain resource; the communication unit 702 is further configured to receive the first downlink data on an actually received time domain resource of the first downlink data, where the actually received time domain resource of the first downlink data does not overlap with the scheduled time domain resource.

Optionally, the pre-configured time domain resource is used for repeatedly transmitting N pieces of first downlink data, and the processing unit 701 determines that the pre-configured time domain resource of the ith first downlink data in the pre-configured time domain resource overlaps with the scheduling time domain resource, where N is a positive integer, and i is an integer greater than or equal to 1 and less than or equal to N;

the processing unit 701 is further configured to determine an actual received time domain resource of the ith first downlink data according to the overlapping time domain resources;

the communication unit 702 is further configured to receive the ith first downlink data on the actually received time domain resource of the ith first downlink data.

Optionally, the pre-configured time domain resource is used for repeatedly transmitting N pieces of first downlink data, and the processing unit 701 determines that the pre-configured time domain resource of the ith first downlink data in the pre-configured time domain resource overlaps with the scheduling time domain resource, where N is a positive integer, and i is an integer greater than or equal to 1 and less than or equal to N; the overlapping time domain resources do not carry demodulation reference signals; the communication unit 702 is further configured to receive, in a puncturing manner, the ith first downlink data on the overlapping time domain resources.

Optionally, the processing unit 701 determines that the actual received time domain resource of the ith first downlink data does not overlap with the scheduled time domain resource.

Optionally, the processing unit 701 determines that the actual received time domain resource of the ith first downlink data and the overlapping time domain resource belong to the same time domain unit.

Optionally, the processing unit 701 is further configured to adjust a modulation coding strategy; the communication unit 702 is specifically configured to receive the ith first downlink data on the actual received time domain resource of the ith first downlink data according to the adjusted modulation and coding strategy.

Optionally, the communication unit 702 is further configured to receive transmission configuration indication information, where the transmission configuration indication information is used to indicate a plurality of activated transmission configuration indication states.

For the case where the data transmission device 70 is used to implement the functions of a network appliance:

a communication unit 702, configured to send resource indication information, where the resource indication information is used to indicate a preconfigured time domain resource of the first downlink data, and the preconfigured time domain resource is used to repeatedly transmit the first downlink data; transmitting configuration information, wherein the configuration information is used for indicating scheduling time domain resources;

the communication unit 702 is further configured to transmit data on the scheduled time domain resource when the processing unit 701 determines that the pre-configured time domain resource and the scheduled time domain resource have overlapping time domain resources.

Optionally, the processing unit 701 is configured to determine an actual transmission time domain resource of the first downlink data according to the overlapping time domain resources, where the actual transmission time domain resource of the first downlink data is not overlapped with the scheduling time domain resource; the communication unit 702 is further configured to send the first downlink data on an actual sending time domain resource of the first downlink data.

Optionally, the pre-configured time domain resource is used for repeatedly transmitting N pieces of first downlink data, and the processor determines that the pre-configured time domain resource of the ith first downlink data in the pre-configured time domain resource overlaps with the scheduling time domain resource, N is a positive integer, and i is an integer greater than or equal to 1 and less than or equal to N; a processing unit 701, configured to determine an actual transmission time domain resource of the ith first downlink data according to the overlapping time domain resources; the communication unit 702 is further configured to send the ith first downlink data on the actual sending time domain resource of the ith first downlink data.

Optionally, the pre-configured time domain resource is used for repeatedly transmitting N pieces of first downlink data, the processor determines that the pre-configured time domain resource of the ith first downlink data in the pre-configured time domain resource overlaps with the scheduling time domain resource, the overlapping time domain resource does not bear demodulation reference signals, N is a positive integer, and i is an integer greater than or equal to 1 and less than or equal to N; the communication unit 702 is further configured to send the ith first downlink data on the overlapping time domain resources in a puncturing manner.

Optionally, the processing unit 701 determines that the actual transmission time domain resource of the ith first downlink data does not overlap with the scheduling time domain resource.

Optionally, the processing unit 701 determines that the actual transmission time domain resource of the ith first downlink data and the overlapping time domain resource belong to the same time domain unit.

Optionally, the processing unit 701 is configured to adjust a modulation coding strategy; the communication unit 702 is specifically configured to send the ith first downlink data on the actual sending time domain resource of the ith first downlink data according to the adjusted modulation and coding strategy.

Optionally, the pre-configured time domain resource is used for repeatedly transmitting N pieces of first downlink data, and the processor determines that the pre-configured time domain resource of the ith first downlink data in the pre-configured time domain resource overlaps with the scheduling time domain resource, N is a positive integer, and i is an integer greater than or equal to 1 and less than or equal to N;

a processing unit 701, configured to determine, according to the overlapping time domain resources, an actual transmission time domain resource of the ith first downlink data, where the actual transmission time domain resource of the ith first downlink data is not overlapped with the scheduling time domain resource;

the communication unit 702 is further configured to, when the processor determines that the number of actually transmitted time domain resources of the ith first downlink data is smaller than the number of preconfigured time domain resources of the ith first downlink data, not transmit the ith first downlink data on the actually transmitted time domain resources of the ith first downlink data.

Optionally, the pre-configured time domain resource is used for repeatedly transmitting N pieces of first downlink data, and the processor determines that the pre-configured time domain resource of the ith first downlink data in the pre-configured time domain resource overlaps with the scheduling time domain resource, N is a positive integer, and i is a positive integer greater than or equal to 1 and less than or equal to N; the communication unit 702 is further configured to not send the ith first downlink data on the preconfigured time domain resource of the ith first downlink data.

Optionally, the communication unit 702 is further configured to send transmission configuration indication information, where the transmission configuration indication information is used to indicate a plurality of activated transmission configuration indication states.

The division of the units in the embodiments of the present application is schematically shown, which is merely a logic function division, and may have another division manner when actually implemented, and in addition, each functional unit in each embodiment of the present application may be integrated in one processor, or may exist separately and physically, or may be integrated in one module by two or more units. The integrated units may be implemented in hardware or in software functional modules.

Fig. 16 is a schematic structural diagram of a terminal device according to an embodiment of the present application. The configuration shown in fig. 16 is one possible configuration. The terminal device 80 includes a transceiver 801 and one or more controllers/processors 802.

A processor 802 configured to determine a pre-configured time domain resource of the first downlink data, where the pre-configured time domain resource is used for repeatedly transmitting the first downlink data;

a transceiver 801 for receiving configuration information;

a processor 802 configured to determine a scheduling time domain resource according to the configuration information;

the transceiver 801 is further configured to transmit data on the scheduled time domain resource when the processor 802 determines that there is an overlapping time domain resource between the pre-configured time domain resource and the scheduled time domain resource.

The processor for determining the scheduled time domain resource according to the configuration information may be the same processor or may be a different processor than the processor for determining the preconfigured time domain resource of the first downlink data. The processor for determining that overlapping time domain resources exist may be the same processor or may be a different processor than the processor for determining scheduling time domain resources based on the configuration information. The processor for determining the pre-configured time domain resources of the first downlink data may be the same processor or may be a different processor than the processor for determining that there are overlapping time domain resources.

Regarding the transceiver 801 transmitting data on the scheduled time domain resources, the processor 802 determines the pre-configured time domain resources of the first downlink data, and the processor 802 determines that overlapping time domain resources exist, as described in the previous method embodiments.

The functions of the controller/processor 802 described above may be implemented by a circuit or may be implemented by general-purpose hardware executing software codes, and when the latter is adopted, the terminal device may include a memory 803 for storing a program code executable by the controller/processor 802 in addition to the aforementioned transceiver 801 and controller/processor 802. The aforementioned functions are performed when the controller/processor 802 executes program code stored in the memory 803.

Further, the terminal device may further include an encoder 8041, a modulator 8042, a demodulator 8044, and a decoder 8043. The encoder 8041 is used to acquire and encode data/signaling to be sent by the terminal device to the network device or other terminals. The modulator 8042 modulates the data/signaling encoded by the encoder 8041, and then transmits the modulated data/signaling to the transceiver 801, and the transceiver 801 transmits the modulated data/signaling to a network device or other terminals.

The demodulator 8044 is used to obtain data/signaling sent by the network device or other terminal to the terminal and to demodulate it. The decoder 8043 is used for decoding the data/signaling demodulated by the demodulator 8044.

The encoder 8041, modulator 8042, demodulator 8044, and decoder 8043 described above may be implemented by a composite modem processor 804. These elements are handled according to the radio access technology employed by the radio access network (e.g., the access technology of LTE and other evolved systems).

The controller/processor 802 controls and manages the actions of the terminal device, so that each device cooperates with the implementation of the steps executed by the terminal device in the above method embodiment. As an example, the controller/processor 802 is used to support the terminal device in performing the content of fig. 6 relating to the processing of the terminal device.

Fig. 17 is a schematic structural diagram of a network device according to an embodiment of the present application. The configuration shown in fig. 17 is one possible configuration. The network device 90 includes a transceiver 901 and one or more processors 902.

One or more processors 902 are used to perform the functions of the network device of the previous embodiments, such as executing 605 in the embodiment shown in fig. 6, to control the transceiver 901 to transmit data or information.

The network device 90 may also include at least one memory 1030 for storing program instructions and/or data. The memory 903 is coupled to the processor 902. The coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units, or modules, which may be in electrical, mechanical, or other forms for information interaction between the devices, units, or modules. The processor 902 may operate in conjunction with the memory 903. The processor 902 may execute program instructions stored in the memory 903. At least one of the at least one memory may be included in the processor.

A transceiver 901 for communicating with other devices, such as terminal devices or core network devices, via a transmission medium, so that the network device 90 may communicate with the other devices. The transceiver may be a communication interface, bus, circuit, or device capable of implementing a transceiving function. Illustratively, the processor 902 transmits the resource indication information, configuration information, and data using the transceiver 901.

The specific connection medium between the transceiver 901, the processor 902, and the memory 903 is not limited in the embodiments of the present application. In the embodiment of the present application, the memory 903, the processor 902 and the transceiver 901 are connected through a bus 904 in fig. 17, where the bus is indicated by a thick line in fig. 17, and the connection manner between other components is only schematically illustrated, and is not limited thereto. The buses may be classified as address buses, data buses, control buses, etc. For ease of illustration, only one thick line is shown in fig. 17, but not only one bus or one type of bus.

The embodiment of the application also provides a data transmission system, which comprises one or more terminal devices and one or more network devices.

It should be appreciated that in embodiments of the present application, the processor may be a central processing unit (Central Processing Unit, simply "CPU"), which may also be other general purpose processors, digital Signal Processors (DSPs), application Specific Integrated Circuits (ASICs), off-the-shelf programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory may include read only memory and random access memory and provide instructions and data to the processor. A portion of the memory may also include non-volatile random access memory.

The bus system may include a power bus, a control bus, a status signal bus, etc., in addition to the data bus. For clarity of illustration, however, the various buses are labeled in the drawings as bus systems.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or by instructions in the form of software. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in the processor for execution. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method. To avoid repetition, a detailed description is not provided herein.

It should also be understood that the first, second, third, fourth and various numerical numbers referred to herein are merely descriptive convenience and are not intended to limit the scope of embodiments of the present invention.

It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic of the processes, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

Those of ordinary skill in the art will appreciate that the various illustrative logical blocks (illustrative logical block) and steps (steps) described in connection with the embodiments disclosed herein can be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

In the above embodiments, it may be implemented in whole or in part 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 instructions. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present invention, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another, for example, by wired (e.g., coaxial cable, optical fiber, digital Subscriber Line (DSL)), or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid State Disk (SSD)), etc.

The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A data transmission method, comprising:

determining a pre-configured time domain resource of first downlink data, wherein the pre-configured time domain resource is used for repeatedly transmitting the first downlink data;

receiving configuration information, and determining scheduling time domain resources according to the configuration information;

if the pre-configured time domain resource and the scheduling time domain resource have overlapping time domain resources, transmitting data on the scheduling time domain resource;

the pre-configured time domain resource is used for repeatedly transmitting N pieces of first downlink data, the pre-configured time domain resource of the ith first downlink data in the pre-configured time domain resource is overlapped with the scheduling time domain resource, N is a positive integer, and i is an integer which is more than or equal to 1 and less than or equal to N; the overlapping time domain resources do not carry demodulation reference signals; and receiving the ith first downlink data on the overlapped time domain resource in a punching mode, wherein the overlapped time domain resource carries first downlink data with zero power.

2. The method of claim 1, wherein the scheduled time domain resource is a time domain resource that transmits second downlink data, the second downlink data having a higher priority than the first downlink data.

3. The method of claim 1, wherein the configuration information indicates that the scheduled time domain resource is used for uplink transmission.

4. The method according to claim 1, wherein the method further comprises:

and receiving transmission configuration indication information, wherein the transmission configuration indication information is used for indicating a plurality of activated transmission configuration indication states.

5. A data transmission method, comprising:

transmitting resource indication information, wherein the resource indication information is used for indicating a pre-configured time domain resource of first downlink data, and the pre-configured time domain resource is used for repeatedly transmitting the first downlink data;

transmitting configuration information, wherein the configuration information is used for indicating scheduling time domain resources;

the pre-configured time domain resource is used for repeatedly transmitting N pieces of first downlink data, the pre-configured time domain resource of the ith first downlink data in the pre-configured time domain resource is overlapped with the scheduling time domain resource, N is a positive integer, and i is an integer which is more than or equal to 1 and less than or equal to N; the overlapping time domain resources do not carry demodulation reference signals; and transmitting the ith first downlink data on the overlapped time domain resource in a punching mode, wherein the overlapped time domain resource carries first downlink data with zero power.

6. The method of claim 5, wherein the scheduled time domain resource is a time domain resource that transmits second downlink data, the second downlink data having a higher priority than the first downlink data.

7. The method of claim 5, wherein the configuration information indicates that the scheduled time domain resource is used for uplink transmission.

8. The method of claim 5, wherein the method further comprises:

and transmitting transmission configuration indication information, wherein the transmission configuration indication information is used for indicating a plurality of activated transmission configuration indication states.

9. A data transmission device comprising at least one processor and a transceiver;

the processor is configured to determine a preconfigured time domain resource of first downlink data, where the preconfigured time domain resource is used for repeatedly transmitting the first downlink data;

the transceiver is used for receiving configuration information;

the processor is further configured to determine a scheduling time domain resource according to the configuration information;

the transceiver is further configured to transmit data on the scheduled time domain resource when the processor determines that there is an overlapping time domain resource between the pre-configured time domain resource and the scheduled time domain resource; the pre-configured time domain resource is used for repeatedly transmitting N pieces of first downlink data, the pre-configured time domain resource of the ith first downlink data in the pre-configured time domain resource is overlapped with the scheduling time domain resource, N is a positive integer, and i is an integer which is more than or equal to 1 and less than or equal to N; the overlapping time domain resources do not carry demodulation reference signals; and receiving the ith first downlink data on the overlapped time domain resource in a punching mode, wherein the overlapped time domain resource carries first downlink data with zero power.

10. The apparatus of claim 9, wherein the scheduled time domain resource is a time domain resource that transmits second downlink data, the second downlink data having a higher priority than the first downlink data.

11. The apparatus of claim 9, wherein the configuration information indicates that the scheduled time domain resource is used for uplink transmission.

12. The apparatus of claim 9, wherein the device comprises a plurality of sensors,

the transceiver is further configured to receive transmission configuration indication information, where the transmission configuration indication information is configured to indicate a plurality of activated transmission configuration indication states.

13. A data transmission device comprising at least one processor and a transceiver;

the transceiver is configured to send resource indication information, where the resource indication information is configured to indicate a preconfigured time domain resource of first downlink data, and the preconfigured time domain resource is used to repeatedly transmit the first downlink data; transmitting configuration information, wherein the configuration information is used for indicating scheduling time domain resources;

the transceiver is further configured to transmit data on the scheduled time domain resource when the processor determines that there is an overlapping time domain resource between the pre-configured time domain resource and the scheduled time domain resource; the pre-configured time domain resource is used for repeatedly transmitting N pieces of first downlink data, the pre-configured time domain resource of the ith first downlink data in the pre-configured time domain resource is overlapped with the scheduling time domain resource, N is a positive integer, and i is an integer which is more than or equal to 1 and less than or equal to N; the overlapping time domain resources do not carry demodulation reference signals; and transmitting the ith first downlink data on the overlapped time domain resource in a punching mode, wherein the overlapped time domain resource carries first downlink data with zero power.

14. The apparatus of claim 13, wherein the scheduled time domain resource is a time domain resource that transmits second downlink data, the second downlink data having a higher priority than the first downlink data.

15. The apparatus of claim 13, wherein the configuration information indicates that the scheduled time domain resource is used for uplink transmission.

16. The apparatus of claim 13, wherein the device comprises a plurality of sensors,

the transceiver is further configured to send transmission configuration indication information, where the transmission configuration indication information is used to indicate a plurality of activated transmission configuration indication states.

17. A system on a chip comprising at least one processor and an interface;

the interface is used for inputting the processed configuration information to the processor;

the interface is further configured to output data to transmit the data on the scheduled time domain resource when the processor determines that the pre-configured time domain resource and the scheduled time domain resource have overlapping time domain resources;

The processor determines that a preconfigured time domain resource of the ith first downlink data in the preconfigured time domain resource overlaps with the scheduling time domain resource, N is a positive integer, and i is an integer greater than or equal to 1 and less than or equal to N; the overlapping time domain resources do not carry demodulation reference signals; the ith first downlink data is received on the corresponding actual received time domain resource in a punching mode, and the overlapped time domain resource carries first downlink data with zero power.

18. A system on a chip comprising at least one processor and an interface;

the interface is configured to output resource indication information to send the resource indication information, where the resource indication information is used to indicate a preconfigured time domain resource of first downlink data, and the preconfigured time domain resource is used to repeatedly transmit the first downlink data; outputting configuration information to send the configuration information, wherein the configuration information is used for indicating scheduling time domain resources;

The pre-configured time domain resource is used for repeatedly transmitting N pieces of first downlink data, the pre-configured time domain resource of the ith first downlink data in the pre-configured time domain resource is overlapped with the scheduling time domain resource, N is a positive integer, and i is an integer which is more than or equal to 1 and less than or equal to N; the overlapping time domain resources do not carry demodulation reference signals; and outputting the ith first downlink data to send the ith first downlink data in a punching mode on the overlapped time domain resource, wherein the overlapped time domain resource carries first downlink data with zero power.