Patent Description:
In a Long Term Evolution (LTE) system, resource scheduling is scheduling based on a slot, and the unit of each resource scheduling is a slot or subframe. In a New Radio (NR) system, scheduling of a resource may be based on the scheduling of a slot or the scheduling of a symbol. However, at present, a network device (e.g., base station) needs additional indication information to indicate which manner to be used for the resource scheduling, which will bring additional control signaling overhead, increase blind detection complexity for a terminal device to search for Downlink Control Information (DCI) and bring more power consumption.

The document "<NPL> discloses the related art of the present disclosure. It discloses a relationship between scheduling granularity with DCI format, where EMBB and URLLC should use different DCI formats, whereby EMBB traffic would be scheduled for slot level transmission, while, symbol level scheduling would be preferred for URLLC.

Embodiments of the present application provide a wireless communication method, a network device, and a terminal device.

In a first aspect, an embodiment of the present application provides a wireless communication method, including: sending downlink control information (DCI) to a terminal device through a first DCI format among multiple downlink control information formats (DCI formats), wherein the multiple DCI formats include a first type of DCI format and a second type of DCI format, the first type of DCI format corresponds to a first resource scheduling mode, the second type of DCI format corresponds to a second resource scheduling mode, the first resource scheduling mode indicates a time domain resource in unit of slot, the second resource scheduling mode indicates a time domain resource in unit of symbol, and the first DCI format is the first type of DCI format or the second type of DCI format; and transmitting a data channel through a resource scheduling mode corresponding to the first DCI format.

The network device classifies downlink control information formats (DCI Formats) into a first type of DCI format and a second type of DCI format.

Therefore, in a wireless communication method of an embodiment of the present application, a network device indicates a time domain resource in unit of slot through a first type of DCI format and indicates a time domain resource in unit of symbol through a second type of DCI format. Thereby, the network device may implicitly indicate a resource scheduling mode through a downlink control information format, so that the control signaling overhead caused by the indication of control signaling is avoided, and the operation complexity and energy consumption of the terminal device are reduced.

The method further includes: transmitting a reference signal of the data channel through a reference signal mode corresponding to the first DCI format.

The first type of DCI format corresponds to a first reference signal mode, the second type of DCI format corresponds to a second reference signal mode, there is at least one reference signal located at a specific symbol of a slot in the first reference signal mode, there is at least one reference signal located at a specific symbol among one group of symbols in the second reference signal mode, and the one group of symbols are symbols used for transmitting the data channel and the reference signal of the data channel.

Therefore, in a wireless communication method of an embodiment of the present application, a network device indicates the presence of at least one reference signal located at a specific symbol of a slot through a first type of DCI format and indicates the presence of at least one reference signal located at a specific symbol of a group of symbols through a second type of DCI format. Thereby, the network device may implicitly indicate a reference signal transmission mode through a downlink control information format, so that the control signaling overhead caused by the indication of control signaling is avoided, and the operation complexity and energy consumption of the terminal device are reduced.

The specific symbol of the slot is a third time domain symbol or a fourth time domain symbol of the slot, or the specific symbol among the one group of symbols is a first symbol among the one group of symbols.

The reference signal is a demodulation reference signal (DMRS).

Optionally, in one implementation of the first aspect, sending the DCI to the terminal device through the first DCI format among the multiple DCI formats includes: sending the DCI to the terminal device on a first resource through the first DCI format.

When the first DCI format is the first type of DCI format, the first resource is a resource in unit of slot.

When the first DCI format is the second type of DCI format, the first resource is a resource in unit of symbol.

Optionally, in one implementation of the first aspect, the first resource is a control resource set or a search space for transmitting a physical downlink control channel.

In a second aspect, an embodiment of the present application provides a wireless communication method, including: receiving downlink control information (DCI) from a network device; determining a downlink control information format (DCI format) of the DCI, wherein the DCI format of the DCI is a first type of DCI format or a second type of DCI format, the first type of DCI format corresponds to a first resource scheduling mode, the second type of DCI format corresponds to a second resource scheduling mode, the first resource scheduling mode indicates a time domain resource in unit of slot, and the second resource scheduling mode indicates a time domain resource in unit of symbol; and determining a resource scheduling mode of a data channel corresponding to the DCI according to the DCI format of the DCI.

In one implementation of the second aspect, the method further includes: determining a reference signal mode of the data channel according to the DCI format of the DCI, wherein the first type of DCI format corresponds to a first reference signal mode, the second type of DCI format corresponds to a second reference signal mode, there is at least one reference signal located at a specific symbol of a slot in the first reference signal mode, there is at least one reference signal located at a specific symbol among one group of symbols in the second reference signal mode, and the one group of symbols are symbols used for transmitting the data channel and a reference signal of the data channel; and determining a reference signal position of the data channel according to a reference signal mode of the data channel.

In one implementation of the second aspect, the specific symbol of the slot is a third time domain symbol or a fourth time domain symbol of the slot.

In one implementation of the second aspect, the specific symbol among the one group of symbols is a first symbol among the one group of symbols.

In one implementation of the second aspect, the reference signal is a demodulation reference signal (DMRS).

Optionally, in one implementation of the second aspect, receiving the DCI from the network device includes: receiving the DCI from the network device on a first resource, wherein when the first resource is a resource in unit of slot, the DCI format is the first type of DCI format, and when the first resource is a resource in unit of symbol, the DCI format is the second type of DCI format.

Determining the DCI format of the DCI includes: determining the DCI format of the DCI according to the first resource.

Therefore, in a wireless communication method of an embodiment of the present application, a terminal device may determine the DCI format corresponding to the DCI through the granularity of the first resource on the time domain, and further determine the resource scheduling mode and/or the reference signal transmission mode according to the type of the DCI format. Thereby, the operation complexity and energy consumption of the terminal device are reduced.

Optionally, in one implementation of the second aspect, the first resource is a control resource set or a search space for transmitting a physical downlink control channel.

In a third aspect, an embodiment of the present application provides a network device that may execute a module or unit of the method in the first aspect or any alternative implementation of the first aspect.

In a fourth aspect, an embodiment of the present application provides a terminal device that may execute a module or unit of the method in the second aspect or any alternative implementation of the second aspect.

In a fifth aspect, a network device is provided, and the network device includes a processor, a memory, and a communication interface. The processor is connected with the memory and the communication interface. The memory is used for storing instructions, the processor is used for executing the instructions, and the communication interface is used for communicating with other network elements under the control of the processor. When the processor executes the instructions stored in the memory, the execution causes the processor to execute the method in the first aspect or any possible implementation of the first aspect.

In a sixth aspect, a terminal device is provided, and the terminal device includes a processor, a memory, and a communication interface. The processor is connected with the memory and the communication interface. The memory is used for storing instructions, the processor is used for executing the instructions, and the communication interface is used for communicating with other network elements under the control of the processor. When the processor executes the instructions stored in the memory, the execution causes the processor to execute the method in the second aspect or any possible implementation of the second aspect.

Embodiments of the invention are those whose scope is within that of the appended claims. Other passages stating embodiments which do not fall under the scope of the appended claims are to be considered as examples.

Technical solutions in embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

The technical solutions of the embodiments of the present application may be applied to various communication systems, such as a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a General Packet wireless Service (GPRS) system, a Long Term Evolution (LTE) system, a LTE Frequency Division Duplex (FDD) system, a LTE Time Division Duplex (TDD) system, a Universal Mobile Telecommunication System (UMTS) system, a Worldwide Interoperability for Microwave Access (WiMAX) communication system, or a future <NUM> system.

<FIG> shows a wireless communication system <NUM> to which an embodiment of the present application is applied. The wireless communication system <NUM> may include a network device <NUM>. The network device <NUM> may be a device that communicates with a terminal device. The network device <NUM> may provide communication coverage for a specific geographical region, and may communicate with a terminal device (e.g., UE) in the coverage region. Optionally, the network device <NUM> may be a Base Transceiver Station (BTS) in a GSM system or CDMA system, a NodeB (NB) in a WCDMA system, an Evolutional Node B (eNB or eNodeB) in an LTE system, or a radio controller in a Cloud Radio Access Network (CRAN). Or, the network device may be a relay station, an access point, a vehicle-mounted device, a wearable device, a network side device in a future <NUM> network, or a network device in a future evolved Public Land Mobile Network (PLMN), etc..

The wireless communication system <NUM> further includes at least one terminal device <NUM> in the coverage region of the network device <NUM>. The terminal device <NUM> may be mobile or fixed. Optionally, the terminal device <NUM> may be referred to as an access terminal, a User Equipment (UE), a subscriber unit, a subscriber station, a mobile station, a mobile platform, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user apparatus. The access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with a wireless communication function, a computing device or another processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future <NUM> network or a terminal device in a future evolved Public Land Mobile Network (PLMN), or the like.

Optionally, Device to Device (D2D) communication may be performed between the terminal devices <NUM>.

Optionally, the <NUM> system or network may also be referred to as a New Radio (NR) system or network.

<FIG> exemplifies one network device and two terminal devices. Optionally, the wireless communication system <NUM> may include multiple network devices, and another quantity of terminal devices may be included within the coverage region of each network device, which is not limited in embodiments of the present application.

Optionally, the wireless communication system <NUM> may further include other network entities such as a network controller, a mobile management entity, which is not limited in embodiments of the present application.

In the <NUM> NR standard, two scheduling modes are supported: slot-based scheduling and symbol-based scheduling (non-slot-based scheduling). The non-slot-based scheduling is to reduce the granularity of scheduling in the time domain to an orthogonal frequency division multiplexing (OFDM) symbol, which may realize more flexible time domain resource allocation. Slot-based scheduling and non-slot-based scheduling have different time domain position determination manners for a demodulation reference signal (DMRS). The first column of DMRS in the slot-based scheduling mode is located at the 3rd or 4th symbol of a slot. The first column of DMRS in the non-slot-based scheduling mode is located at the first symbol of a data channel.

In addition, the base station will indicate which of the above two scheduling modes is used to schedule the terminal.

Optionally, in an embodiment of the present application, the network device may implicitly indicate the resource scheduling mode and/or the reference signal transmission mode through a downlink control information format (DCI format).

For example, all DCI Formats are classified into a first type of DCI format and a second type of DCI format, the first type of DCI format corresponds to a first resource scheduling mode, the second type of DCI format corresponds to a second resource scheduling mode, the first resource scheduling mode indicates a time domain resource in unit of slot, and the second resource scheduling mode indicates a time domain resource in unit of symbol.

For example, in the R9 version of the protocol, the following DCIs are defined in total: DCI <NUM>, DCI <NUM>, DCI 1A, DCI 1B, DCI 1C, DCI 1D, DCI <NUM>, DCI 2A, DCI 2B, DCI <NUM>, and DCI 3A. DCI <NUM>, DCI <NUM> and DCI 3A are DCI types related to a Physical Uplink Shared Channel (PUSCH) or a Physical Uplink Control Channel (PUCCH). And, DCI <NUM>, DCI 1A, DCI 1B, DCI 1C, DCI 1D, DCI <NUM>, DCI 2A, and DCI 2B are DCI types for a Physical Downlink Shared Channel (PDSCH). In this case, DCI <NUM>, DCI <NUM>, and DCI 3A may be classified as a first type of DCI format, and DCI <NUM>, DCI 1A, DCI 1B, DCI 1C, DCI 1D, DCI <NUM>, DCI 2A, and DCI 2B may be classified as a second type of DCI format.

It should be understood that the terms "system" and "network" are often used interchangeably in this document. The term "and/or" in this document is merely an association relationship describing associated objects, indicating that there may be three relationships, for example, A and/or B may indicate three cases: A alone, A and B, and B alone. In addition, the symbol "/" in this document generally indicates that objects before and after the symbol "/" have an "or" relationship.

<FIG> is a schematic flowchart of a wireless communication method <NUM> according to an embodiment of the present application. As shown in <FIG>, the method <NUM> may be performed by a network device, which may be a network device as shown in <FIG>, and a terminal device in the method <NUM> may be a terminal device as shown in <FIG>. The method <NUM> includes the following contents.

In act <NUM>, a network device sends downlink control information (DCI) to a terminal device through a first DCI format among multiple DCI formats.

Optionally, the multiple DCI formats include a first type of DCI format and a second type of DCI format, the first type of DCI format corresponds to a first resource scheduling mode, the second type of DCI format corresponds to a second resource scheduling mode, the first resource scheduling mode indicates a time domain resource in unit of slot, and the second resource scheduling mode indicates a time domain resource in unit of symbol.

Optionally, the first DCI format is the first type of DCI format or the second type of DCI format.

In act <NUM>, the network device transmits a data channel through a resource scheduling mode corresponding to the first DCI format.

Optionally, after receiving the DCI, the terminal device may determine the resource scheduling mode according to the format of the DCI, and accurately transmit the data channel through the time domain resource corresponding to the resource scheduling mode determined according to the format of the DCI.

Optionally, the method <NUM> further includes: transmitting, by the network device, a reference signal of the data channel through a reference signal mode corresponding to the first DCI format.

Optionally, the reference signal is a demodulation reference signal (DMRS).

Optionally, the specific symbol of the slot is a third time domain symbol or a fourth time domain symbol of the slot.

Optionally, the specific symbol among the one group of symbols is a first symbol among the one group of symbols.

Optionally, the specific symbol is the symbol position of the first column of DMRS.

Optionally, for the slot-based scheduling mode, the first column of DMRS is located at the 3rd or 4th symbol of the slot, and for the non-slot-based scheduling mode, the first column of DMRS is located at the first symbol of the data channel, that is, the first symbol among the one group of symbols.

Optionally, sending the DCI to the terminal device through the first DCI format among the multiple DCI formats includes: sending the DCI to the terminal device on a first resource through the first DCI format.

Optionally, the terminal device may determine the DCI format according to the granularity of the first resource. For example, if the granularity of the first resource is a slot, the DCI format is the first type of DCI format. If the granularity of the first resource is a symbol, the DCI format is the second type of DCI format.

Optionally, the first resource is a control resource set or a search space for transmitting a physical downlink control channel.

Further, the network device indicates the presence of at least one reference signal located at a specific symbol of a slot through a first type of DCI format and indicates the presence of at least one reference signal located at a specific symbol of one group of symbols through a second type of DCI format. Thereby, the network device may implicitly indicate a reference signal transmission mode through a downlink control information format, so that the control signaling overhead caused by the indication of control signaling is avoided, and the operation complexity and energy consumption of the terminal device are reduced.

<FIG> is a schematic flowchart of a wireless communication method <NUM> according to an embodiment of the present application. As shown in <FIG>, the method <NUM> may be performed by a terminal device, which may be the terminal device as shown in <FIG>, and a network device in the method <NUM> may be the network device as shown in <FIG>. The method <NUM> includes the following contents.

In act <NUM>, a terminal device receives downlink control information (DCI) from a network device.

In act <NUM>, the terminal device determines a DCI format of the DCI.

Optionally, the DCI format of the DCI is the first type of DCI format or the second type of DCI format.

Optionally, the first type of DCI format corresponds to a first resource scheduling mode, the second type of DCI format corresponds to a second resource scheduling mode, the first resource scheduling mode indicates a time domain resource in unit of slot, and the second resource scheduling mode indicates a time domain resource in unit of symbol.

In act <NUM>, the terminal device determines a resource scheduling mode of a data channel corresponding to the DCI according to the DCI format of the DCI.

Optionally, the method <NUM> further includes: determining, by the terminal device, a reference signal mode of the data channel according to the DCI format of the DCI, wherein the first type of DCI format corresponds to a first reference signal mode, the second type of DCI format corresponds to a second reference signal mode, there is at least one reference signal located at a specific symbol of a slot in the first reference signal mode, there is at least one reference signal located at a specific symbol among one group of symbols in the second reference signal mode, and the one group of symbols are symbols used for transmitting the data channel and a reference signal of the data channel; and determining, by the terminal device, a reference signal position of the data channel according to a reference signal mode of the data channel.

Optionally, receiving the DCI from the network device includes: receiving the DCI from the network device on a first resource, wherein when the first resource is a resource in unit of slot, the DCI format is the first type of DCI format, and when the first resource is a resource in unit of symbol, the DCI format is the second type of DCI format; determining the DCI format of the DCI includes: determining, by the terminal device, the DCI format of the DCI according to the first resource.

Optionally, the first resource is a control resource set (CORESET) or a search space (Search Space) for transmitting a physical downlink control channel.

Optionally, as shown in <FIG>, as an embodiment, a terminal device may determine a searched DCI format according to a cycle of the first resource (control resource set or search space), and determine a data channel scheduling mode and DMRS symbol position according to the DCI format.

Specifically, <FIG> shows following acts.

In act <NUM>, a terminal device receives configuration of a control resource set/search space sent by a network device.

Optionally, the configuration of the control resource set/search space may be configured with a slot as the granularity, or configured with a symbol as the granularity.

In act <NUM>, if the control resource set/search space is configured with a slot as the granularity, the terminal device searches for DCI in a first type of DCI format in the control resource set/search space.

In act <NUM>, the terminal device receives the DCI in the first type of DCI format.

In act <NUM>, the terminal device determines that a data channel adopts a first resource scheduling mode and a first reference signal mode.

In act <NUM>, the terminal device determines a data channel resource and a reference signal position based on the first resource scheduling mode and the first reference signal mode.

In act <NUM>, the terminal device receives or sends the data channel.

In act <NUM>, if the control resource set/search space is configured with a symbol as the granularity, the terminal device searches for DCI in a second type of DCI format in the control resource set/search space.

In act <NUM>, the terminal device receives the DCI in the second type of DCI format.

In act <NUM>, the terminal device determines that a data channel adopts a second resource scheduling mode and a second reference signal mode.

In act <NUM>, the terminal device determines a data channel resource and a reference signal position based on the second resource scheduling mode and the second reference signal mode.

Optionally, as shown in <FIG>, as an embodiment, a terminal device may determine a data channel scheduling mode and DMRS symbol position according to a DCI format.

In act <NUM>, the terminal device searches for DCI in the control resource set/search space.

In act <NUM>, if the format of the searched DCI is a first type of DCI format, the terminal device receives the DCI in the first type of DCI format.

In act <NUM>, if the format of the searched DCI is a second type of DCI format, the terminal device receives the DCI in the second type of DCI format.

It should be understood that the acts in the wireless communication method <NUM> may refer to the description of corresponding acts in the wireless communication method <NUM>, and will not be repeated here for the sake of brevity.

Further, the terminal device may determine the DCI format corresponding to the DCI through the granularity of the first resource on the time domain, and further determine the resource scheduling mode and/or the reference signal transmission mode according to the type of the DCI format.

<FIG> is a schematic block diagram of a network device <NUM> according to an embodiment of the present application. As shown in <FIG>, the network device <NUM> includes a transceiving unit <NUM>.

The transceiving unit <NUM> is used for sending DCI to a terminal device through a first DCI format among multiple DCI formats.

The multiple DCI formats include a first type of DCI format and a second type of DCI format, the first type of DCI format corresponds to a first resource scheduling mode, the second type of DCI format corresponds to a second resource scheduling mode, the first resource scheduling mode indicates a time domain resource in unit of slot, the second resource scheduling mode indicates a time domain resource in unit of symbol, and the first DCI format is the first type of DCI format or the second type of DCI format.

The transceiving unit <NUM> is further used for transmitting a data channel through a resource scheduling mode corresponding to the first DCI format.

Optionally, the transceiving unit <NUM> is further used for transmitting a reference signal of the data channel through a reference signal mode corresponding to the first DCI format.

The first type of DCI format corresponds to a first reference signal mode, the second type of DCI format corresponds to a second reference signal mode, there is at least one reference signal located at a specific symbol of a slot in the first reference signal mode, there is at least one reference signal located at a specific symbol among one group of symbols in the second reference signal mode, and the one group of symbols are symbols used for transmitting the data channel and a reference signal of the data channel.

Optionally, the transceiving unit <NUM> is specifically used for sending the DCI to the terminal device on a first resource through the first DCI format.

It should be understood that the network device <NUM> according to the embodiment of the present application may correspond to the network device in the method embodiments of the present application, and the above and other operations and/or functions of various units in the network device <NUM> are respectively for realizing the corresponding processes of the network device in the method <NUM> shown in <FIG>, and will not be repeated here for the sake of brevity.

<FIG> is a schematic block diagram of a terminal device <NUM> according to an embodiment of the present application. As shown in <FIG>, the terminal device <NUM> includes a receiving unit <NUM> and a processing unit <NUM>.

The receiving unit <NUM> is used for receiving downlink control information (DCI) from a network device.

The processing unit <NUM> is used for determining a DCI format of the DCI.

The DCI format of the DCI is a first type of DCI format or a second type of DCI format, the first type of DCI format corresponds to a first resource scheduling mode, the second type of DCI format corresponds to a second resource scheduling mode, the first resource scheduling mode indicates a time domain resource in unit of slot, and the second resource scheduling mode indicates a time domain resource in unit of symbol.

The processing unit <NUM> is further used for determining a resource scheduling mode of a data channel corresponding to the DCI according to the DCI format of the DCI.

Optionally, the processing unit <NUM> is further used for determining a reference signal mode of the data channel according to the DCI format of the DCI.

The processing unit <NUM> is further used for determining a reference signal position of the data channel according to a reference signal mode of the data channel.

Optionally, the receiving unit <NUM> is further used for receiving the DCI from the network device on a first resource. If the first resource is a resource in unit of slot, the DCI format is the first type of DCI format, and if the first resource is a resource in unit of symbol, the DCI format is the second type of DCI format.

The processing unit <NUM> is further used for determining the DCI format of the DCI according to the first resource.

It should be understood that the terminal device <NUM> according to the embodiment of the present application may correspond to the terminal device in the method embodiment of the present application, and the above and other operations and/or functions of various units in the terminal device <NUM> are respectively for realizing the corresponding processes of the terminal device in the method <NUM> shown in <FIG>, and will not be repeated here for brevity.

<FIG> shows a schematic block diagram of a device <NUM> for wireless communication provided by an embodiment of the present application. The device <NUM> includes: a memory <NUM> used for storing a program including codes, a transceiver <NUM> used for communicating with other devices, and a processor <NUM> used for executing program codes in the memory <NUM>.

Optionally, when the codes are executed, the processor <NUM> may implement various operations performed by the network device in the method <NUM> in <FIG>, which will not be repeated here for brevity. In this case, the device <NUM> may be an access network device or a core network device. The transceiver <NUM> is used for performing specific transmitting and receiving of signals under the driving of the processor <NUM>.

Optionally, when the codes are executed, the processor <NUM> may implement various operations performed by the terminal device in the method <NUM> in <FIG>, which will not be repeated here for brevity. In this case, the device <NUM> may be a terminal device, such as a cell phone.

It should be understood that in the embodiment of the present application, the processor <NUM> may be a Central Processing Unit (CPU), or the processor <NUM> may be another general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or another programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, or the like. The general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory <NUM> may include a read only memory and a random access memory, and provide instructions and data to the processor <NUM>. A portion of memory <NUM> may include non-transitory random access memory. For example, the memory <NUM> may also store type information of a device.

The transceiver <NUM> may be used for implementing signal transmission and reception functions, such as frequency modulation and demodulation functions, or up-conversion and down-conversion functions.

In the implementation process, at least one act of the method may be completed by an integrated logic circuit of hardware in the processor <NUM>, or the integrated logic circuit may complete the at least one act under the driving of instructions in a form of software. Therefore, the wireless communication device <NUM> may be a chip or chip set. The acts of the method disclosed in connection with the embodiment of the present application may be directly embodied to be completed by an execution of a hardware processor or by an execution of a combination of hardware and software modules in a processor. The software modules may be located in a storage medium commonly used in the art, such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, or a register. The storage medium is located in the memory, and the processor <NUM> reads the information in the memory and accomplishes the acts of the method with its hardware. In order to avoid repetition, it will not be described in detail here.

<FIG> is a schematic block diagram of a system chip <NUM> according to an embodiment of the present application. The system chip <NUM> of <FIG> includes an input interface <NUM>, an output interface <NUM>, a processor <NUM> and a memory <NUM>, which may be connected through internal communication connection lines. The processor <NUM> is used for executing codes in the memory <NUM>.

Optionally, when the codes are executed, the processor <NUM> implements the method executed by the network device in the method embodiment. For sake of conciseness, the specific description will not be repeated here.

Optionally, when the codes are executed, the processor <NUM> implements the method executed by the terminal device in the method embodiment. For sake of conciseness, the specific description will not be repeated here.

Those of ordinary skill in the art will recognize that the exemplary units and algorithm acts described in connection with the embodiments disclosed herein may be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on a specific application and design constraint of the technical solution. Skilled in the art may use different methods to realize the described functions for each particular application, but such realization should not be considered to be beyond the scope of the present application.

Those skilled in the art may clearly understand that for convenience and conciseness of description, the specific working process of the system, apparatus and unit described above may refer to the corresponding process in the aforementioned embodiments of methods, and details are not described herein again.

In several embodiments provided by the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the apparatus embodiment described above is only illustrative, for example, the division of the unit is only a logical function division, and there may be other ways of division in actual implementation, for example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. On the other hand, the mutual coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, apparatuses or units, and may be in electrical, mechanical or other forms.

The units described as separated components may or may not be physically separated, and the component shown as a unit may or may not be a physical unit, i.e., it may be located in one place or may be allocated over multiple network units. Some or all of the units may be selected according to practical needs to achieve a purpose of the solution of the embodiments.

In addition, various functional units in various embodiments of the present application may be integrated in one processing unit, or various units may be physically present separately, or two or more units may be integrated in one unit.

The functions may be stored in a computer readable storage medium if implemented in a form of software functional units and sold or used as a separate product. Based on this understanding, the technical solution of the present application, in essence, or the part contributing to the existing art, or the part of the technical solution, may be embodied in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the acts of the methods described in various embodiments of the present application. The aforementioned storage medium includes various media capable of storing program codes, such as a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

Claim 1:
A method in a terminal for wireless communication in a <NUM> New Radio, NR, standard, comprising:
receiving downlink control information, DCI, from a network device (<NUM>);
determining a DCI format of the DCI (<NUM>), wherein the DCI format of the DCI is a first type of DCI format or a second type of DCI format; the first type of DCI format corresponds to a first resource scheduling mode, the second type of DCI format corresponds to a second resource scheduling mode, the first resource scheduling mode is a slot-based scheduling which indicates a time domain resource in unit of slot, and the second resource scheduling mode is a non-slot-based scheduling which indicates a time domain resource in unit of symbol; and
determining a resource scheduling mode of a data channel corresponding to the DCI according to the DCI format of the DCI (<NUM>),
wherein the method is characterized in that it further comprises:
determining a reference signal mode of the data channel according to the DCI format of the DCI, wherein the first type of DCI format corresponds to a first reference signal mode, the second type of DCI format corresponds to a second reference signal mode, for the first reference signal mode, a first column of demodulation reference signal, DMRS, is located at a 3rd or 4th symbol of a slot, and for the second reference signal mode, a first column of DMRS is located at a first symbol of the data channel;
determining a reference signal position of the data channel according to the reference signal mode of the data channel; and
receiving the data channel according to the determined resource scheduling mode and reference signal mode.