HK40007718B - Data transmission method and apparatus - Google Patents

Description

Data transmission method and device

Technical Field

Embodiments of the present invention relate to the field of communications, and more particularly, to a data transmission method and apparatus.

Background Art

In existing wireless communication systems, such as the Long Term Evolution (LTE) system, a sub-frame is used as the scheduling unit. As shown in Figure 1, the first few symbols in each sub-frame can be used as control channel resources, which span the entire system bandwidth in the frequency domain. The starting symbol of a data transmission resource is generally the first symbol after the control channel resource, and the ending symbol of a data transmission resource is generally the end symbol of the sub-frame. Therefore, the time domain length of the data transmission resource is constant within a sub-frame and across the entire system bandwidth.

Future wireless communication systems (such as 5G) are committed to supporting higher system performance, multiple service types, different deployment scenarios, and a wider spectrum range. Improving system performance is a hot research topic in this field.

Summary of the Invention

The embodiments of the present invention provide a data transmission method and device, which can improve system performance.

In a first aspect, a data transmission method is provided, including: a terminal device receives indication information sent by a network device, the indication information being used to indicate a first downlink scheduling time domain resource in a first time-frequency resource area, wherein the frequency domain resources included in the first time-frequency resource area are part of the system bandwidth; the terminal device receives data sent by the network device on the first downlink data time domain resource according to the indication information.

The data transmission method provided by an embodiment of the present invention determines a first downlink scheduling time domain resource located in a first time-frequency resource area through a network device, and sends indication information for indicating the first downlink scheduling time domain resource to a terminal device, wherein the frequency domain resources included in the first time-frequency resource area are part of the system bandwidth. The terminal device determines the first downlink scheduling time domain resource based on the indication information, and receives downlink data sent by the network device on the first downlink scheduling time domain resource, which can improve system performance and is conducive to supporting different business needs.

Optionally, the first time-frequency resource region may correspond to a scheduling unit in the time domain and may be a part of the system bandwidth in the frequency domain.

Optionally, the indication information is used to indicate at least one of a start symbol, a time domain length, and an end symbol of the first downlink data time domain resource.

Optionally, downlink scheduling time domain resources in different time-frequency resource areas may be located at different time domain positions.

Optionally, the first downlink scheduling time domain resource is different from the second downlink scheduling time domain resource in the second time-frequency resource region, wherein the first time-frequency resource region and the second time-frequency resource region correspond to the same time domain resource and correspond to different frequency domain resources.

Optionally, the first downlink scheduling time domain resource is different from the second downlink scheduling time domain resource in the second time-frequency resource region, including: the starting symbol of the first downlink scheduling time domain resource is different from the starting symbol of the second downlink scheduling time domain resource; and/or the time domain length of the first downlink scheduling time domain resource is different from the time domain length of the second downlink scheduling time domain resource.

In a first possible implementation of the first aspect, the starting symbol of the first downlink data time domain resource is immediately adjacent to the ending symbol of the control channel resource in the first time-frequency resource region; or the starting symbol of the first downlink data time domain resource is separated from the ending symbol of the control channel resource in the first time-frequency resource region by at least one symbol.

In combination with the above-mentioned possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the indication information includes information about control channel resources in the first time-frequency resource area; the method also includes: the terminal device determines the starting symbol of the first downlink data time domain resource based on the information about the control channel resources.

In combination with the above-mentioned possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the first time-frequency resource region includes a self-contained scheduling unit, and the self-contained scheduling unit includes a downlink transmission period, an uplink and downlink switching period, and an uplink transmission period.

At this time, optionally, the indication information includes information of the uplink and downlink switching period in the self-contained scheduling unit; the method also includes: the terminal device determines the end symbol of the first downlink data time domain resource according to the information of the uplink and downlink switching period.

In combination with the above-mentioned possible implementation methods of the first aspect, in a fourth possible implementation method of the first aspect, the terminal device receives indication information sent by the network device, including: the terminal device receives high-layer signaling sent by the network device, and the high-layer signaling or physical layer common signal carries the indication information; or the terminal device receives the physical layer common signal sent by the network device, and the physical layer common signal carries the indication information; or the terminal device receives a terminal-specific control signal sent by the network device, and the terminal-specific control signal carries the indication information.

In combination with the foregoing possible implementation manner of the first aspect, in a fifth possible implementation manner of the first aspect, the first downlink data time domain resource includes multiple mini-slots.

At this time, optionally, the indication information may be used to indicate the total length of the plurality of mini-time slots. For example, the indication information may include the total number of symbols included in the first downlink data time domain resource.

In combination with the above-mentioned possible implementation manner of the first aspect, in the sixth possible implementation manner of the first aspect, if the network device configures multiple time-frequency resource areas including the first time-frequency resource area for the terminal device, wherein the multiple time-frequency resource areas have different subcarrier spacings, then the indication information includes information of the third downlink scheduling time domain resource in the third time-frequency resource area, wherein the third time-frequency resource area is the time-frequency resource area with the smallest subcarrier spacing among the multiple time-frequency resource areas; the method also includes: the terminal device determines the end time of the third downlink data time domain resource according to the indication information; the terminal device determines the time corresponding to the end symbol of the first downlink data time domain resource as the end time of the third downlink data time domain resource.

Optionally, the multiple time-frequency resource regions may correspond to the same time domain resources and may be located in the same scheduling unit for downlink data transmission of the terminal device.

Optionally, the multiple time-frequency resource regions may correspond to different frequency bands within the same time domain resource. In this case, the time domain length and/or end time of the downlink scheduled time domain resources in the multiple time-frequency resource regions shall be based on the downlink scheduled time domain resources in the time-frequency resource region with the smallest subcarrier spacing.

The terminal device may use the end time of the third downlink data time domain resource as the end time of the first downlink scheduling time domain resource, and determine the end symbol of the first downlink scheduling time domain resource accordingly.

According to a second aspect, another data transmission method is provided, including: a terminal device receives indication information sent by a network device, the indication information being used to indicate a first uplink scheduling time domain resource for transmitting uplink data in a first scheduling unit, wherein a time domain position of the first uplink scheduling time domain resource in the first scheduling unit is different from a time domain position of a second uplink scheduling time domain resource in the second scheduling unit, and the second uplink scheduling time domain resource is a time domain resource for transmitting uplink data in the second scheduling unit; and the terminal device sends data to the network device on the first uplink scheduling time domain resource according to the indication information.

Optionally, uplink scheduling time domain resources in different scheduling units may be located in different positions.

Optionally, the indication information is used to indicate at least one of a starting symbol, a time domain length, and an ending symbol of the first uplink scheduling time domain resource.

Optionally, the first uplink scheduling time domain resource is different from the second uplink scheduling time domain resource, including: the starting symbol of the first uplink scheduling time domain resource is different from the starting symbol of the second uplink scheduling time domain resource; and/or the time domain length of the first uplink scheduling time domain resource is different from the time domain length of the second uplink scheduling time domain resource.

Optionally, the first scheduling unit is specifically a self-contained scheduling unit, which includes a downlink transmission period, an uplink and downlink switching period, and an uplink transmission period.

In a first possible implementation manner of the second aspect, the starting symbol of the first uplink scheduling time domain resource is the starting symbol of the short format control channel, and the ending symbol of the first uplink scheduling time domain resource is the ending symbol of the short format control channel.

In combination with the above-mentioned possible implementation methods of the second aspect, in the second possible implementation method of the second aspect, the starting symbol of the first uplink scheduling time domain resource is the first symbol after the uplink and downlink switching period, and the ending symbol of the first uplink scheduling time domain resource is the previous symbol of the short format control channel.

In combination with the above-mentioned possible implementation methods of the second aspect, in a third possible implementation method of the second aspect, the starting symbol of the first uplink scheduling time domain resource is the first symbol after the uplink and downlink switching period, and the ending symbol of the first uplink scheduling time domain resource is the ending symbol of the short format control channel.

In combination with the above-mentioned possible implementation methods of the second aspect, in a fourth possible implementation method of the second aspect, the terminal device receives indication information sent by the network device, including: the terminal device receives high-layer signaling sent by the network device, and the high-layer signaling or physical layer common signal carries the indication information; or the terminal device receives the physical layer common signal sent by the network device, and the physical layer common signal carries the indication information; or the terminal device receives a terminal-specific control signal sent by the network device, and the terminal-specific control signal carries the indication information.

Optionally, the first uplink scheduling time domain resource includes a plurality of mini-time slots. In this case, optionally, the indication information is used to indicate a total length of the plurality of mini-time slots.

In combination with the above-mentioned possible implementation manner of the second aspect, in the fifth possible implementation manner of the second aspect, if the network device configures multiple time-frequency resource areas within the first scheduling unit for the terminal device, wherein the multiple time-frequency resource areas have different subcarrier spacings, then the indication information includes information of the third uplink scheduling time domain resource in the third time-frequency resource area, wherein the third time-frequency resource area is the time-frequency resource area with the smallest subcarrier spacing among the multiple time-frequency resource areas; the method also includes: the terminal device determines the end time of the third uplink data time domain resource according to the indication information; the terminal device determines the time corresponding to the end symbol of the first uplink data time domain resource as the end time of the third uplink data time domain resource.

Optionally, the multiple time-frequency resource regions may correspond to different frequency bands within the first scheduling unit. In this case, the time domain length and/or end time of the uplink scheduling time domain resources in the multiple time-frequency resource regions are based on the uplink scheduling time domain resources in the time-frequency resource region with the minimum subcarrier spacing. The time-frequency resource region with the minimum subcarrier spacing may correspond to the maximum time interval.

The terminal device may use the end time of the third uplink data time domain resource as the end time of the first uplink scheduling time domain resource, and determine the end symbol of the first uplink scheduling time domain resource accordingly.

In a third aspect, a data transmission method is provided, including: a network device determines a first downlink scheduling time domain resource in a first time-frequency resource area, wherein the frequency domain resources included in the first time-frequency resource area are part of the system bandwidth; the network device sends indication information to a terminal device, and the indication information is used to indicate the first downlink scheduling time domain resource.

Optionally, the indication information is used to indicate at least one of a start symbol, a time domain length, and an end symbol of the first downlink data time domain resource.

Optionally, the first downlink scheduling time domain resource is different from the second downlink scheduling time domain resource in the second time-frequency resource region, wherein the first time-frequency resource region and the second time-frequency resource region correspond to the same time domain resource and correspond to different frequency domain resources.

Optionally, the first downlink scheduling time domain resource is different from the second downlink scheduling time domain resource in the second time-frequency resource region, including: the starting symbol of the first downlink scheduling time domain resource is different from the starting symbol of the second downlink scheduling time domain resource; and/or the time domain length of the first downlink scheduling time domain resource is different from the time domain length of the second downlink scheduling time domain resource.

Optionally, the starting symbol of the first downlink data time domain resource is immediately adjacent to the ending symbol of the control channel resource in the first time-frequency resource region; or the starting symbol of the first downlink data time domain resource is separated from the ending symbol of the control channel resource in the first time-frequency resource region by at least one symbol.

In a first possible implementation manner of the third aspect, the indication information includes information about control channel resources in the first time-frequency resource region.

In combination with the above-mentioned possible implementation methods of the third aspect, in a second possible implementation method of the third aspect, the first time-frequency resource region includes a self-contained scheduling unit, which includes a downlink transmission period, an uplink and downlink switching period, and an uplink transmission period; the indication information includes information on the uplink and downlink switching period in the self-contained scheduling unit.

In combination with the above-mentioned possible implementation methods of the third aspect, in a third possible implementation method of the third aspect, the network device sends indication information to the terminal device, including: the network device sends high-layer signaling, and the high-layer signaling carries the indication information; or the network device sends a physical layer common signal, and the physical layer common signal carries the indication information; or the network device sends a terminal-specific control signal to the terminal device, and the terminal-specific control signal carries the indication information.

In combination with the above-mentioned possible implementation manner of the third aspect, in a fourth possible implementation manner of the third aspect, the first downlink data time domain resource includes time domain resources of multiple mini-slots, and the indication information is used to indicate the total length of the multiple mini-slots.

In combination with the above-mentioned possible implementation methods of the third aspect, in the fifth possible implementation method of the third aspect, if the network device configures multiple time-frequency resource areas including the first time-frequency resource area for the terminal device, wherein the multiple time-frequency resource areas have different subcarrier spacings, then the indication information includes information of the third downlink scheduling time domain resource in the third time-frequency resource area, wherein the third time-frequency resource area is the time-frequency resource area with the smallest subcarrier spacing among the multiple time-frequency resource areas.

In a fourth aspect, a data transmission method is provided, including: a network device determines a first uplink scheduling time domain resource for transmitting uplink data in a first scheduling unit, wherein a position of the first uplink scheduling time domain resource in the first scheduling unit is different from a position of a second uplink scheduling time domain resource in the second scheduling unit, and the second uplink scheduling time domain resource is a time domain resource for transmitting uplink data in the second scheduling unit; the network device sends indication information to a terminal device, and the indication information is used to indicate the first uplink scheduling time domain resource in the first scheduling unit.

Optionally, the indication information is used to indicate at least one of a starting symbol, a time domain length, and an ending symbol of the first uplink scheduling time domain resource.

Optionally, the time domain resources used to transmit uplink data in the first scheduling unit are different from the time domain resources used to transmit uplink data in the second scheduling unit, including: the starting symbol of the first uplink scheduling time domain resource is different from the starting symbol of the second uplink scheduling time domain resource; and/or the time domain length of the first uplink scheduling time domain resource is different from the time domain length of the second uplink scheduling time domain resource.

Optionally, the first scheduling unit is specifically a self-contained scheduling unit, which includes a downlink transmission period, an uplink and downlink switching period, and an uplink transmission period.

In a first possible implementation manner of the fourth aspect, the starting symbol of the first uplink scheduling time domain resource is the starting symbol of the short format control channel, and the ending symbol of the first uplink scheduling time domain resource is the ending symbol of the short format control channel.

In combination with the above-mentioned possible implementation methods of the fourth aspect, in the second possible implementation method of the fourth aspect, the starting symbol of the first uplink scheduling time domain resource is the first symbol after the uplink and downlink switching period, and the ending symbol of the first uplink scheduling time domain resource is the previous symbol of the short format control channel.

In combination with the above-mentioned possible implementation methods of the fourth aspect, in the third possible implementation method of the fourth aspect, the starting symbol of the first uplink scheduling time domain resource is the first symbol after the uplink and downlink switching period, and the ending symbol of the first uplink scheduling time domain resource is the ending symbol of the short format control channel.

In combination with the above-mentioned possible implementation methods of the fourth aspect, in a fourth possible implementation method of the fourth aspect, the network device sends indication information to the terminal device, including: the network device sends high-layer signaling, and the high-layer signaling carries the indication information; or the network device sends a physical layer common signal, and the physical layer common signal carries the indication information; or the network device sends a terminal-specific control signal to the terminal device, and the terminal-specific control signal carries the indication information.

Optionally, the first uplink scheduling time domain resource includes a plurality of mini-time slots. In this case, optionally, the indication information is used to indicate a total length of the plurality of mini-time slots.

In combination with the above-mentioned possible implementation manner of the fourth aspect, in a fifth possible implementation manner of the fourth aspect, if the network device configures multiple time-frequency resource areas within the first scheduling unit for the terminal device, wherein the multiple time-frequency resource areas have different subcarrier spacings, then the indication information includes information of the third uplink scheduling time domain resources in the third time-frequency resource area, wherein the third time-frequency resource area is the time-frequency resource area with the smallest subcarrier spacing among the multiple time-frequency resource areas.

In certain aspects of the present invention, the starting time of the first downlink scheduling time domain resource can be any symbol in the first time-frequency resource area, or it can be any symbol in the scheduling unit corresponding to the first time-frequency resource area.

In a fifth aspect, a data transmission device is provided for executing the method in the above-mentioned first aspect or any possible implementation manner of the first aspect.

Specifically, the device includes a unit for executing the method in the above-mentioned first aspect or any possible implementation manner of the first aspect.

In a sixth aspect, a data transmission device is provided for executing the method in the above-mentioned second aspect or any possible implementation of the second aspect.

Specifically, the device includes a unit for executing the method in the above-mentioned second aspect or any possible implementation manner of the second aspect.

In a seventh aspect, a data transmission device is provided for executing the method in the third aspect or any possible implementation of the third aspect.

Specifically, the device includes a unit for executing the method in the third aspect or any possible implementation of the third aspect.

In an eighth aspect, a data transmission device is provided for executing the method in the fourth aspect or any possible implementation of the fourth aspect.

Specifically, the device includes a unit for executing the method in the fourth aspect or any possible implementation of the fourth aspect.

In the ninth aspect, a data transmission device is provided, comprising: a memory and a processor, the memory being used to store instructions, the processor being used to execute the instructions stored in the memory, and 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 the tenth aspect, a data transmission device is provided, comprising: a memory and a processor, the memory being used to store instructions, the processor being used to execute the instructions stored in the memory, and 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.

In the eleventh aspect, a data transmission device is provided, comprising: a memory and a processor, the memory being used to store instructions, the processor being used to execute the instructions stored in the memory, and when the processor executes the instructions stored in the memory, the execution causes the processor to execute the method in the third aspect or any possible implementation of the third aspect.

In the twelfth aspect, a data transmission device is provided, comprising: a memory and a processor, the memory being used to store instructions, the processor being used to execute the instructions stored in the memory, and when the processor executes the instructions stored in the memory, the execution causes the processor to execute the method in the fourth aspect or any possible implementation of the fourth aspect.

In a thirteenth aspect, a computer-readable medium is provided for storing a computer program, wherein the computer program includes instructions for executing the method in the first aspect or any possible implementation of the first aspect.

In a fourteenth aspect, a computer-readable medium is provided for storing a computer program, wherein the computer program includes instructions for executing the method in the second aspect or any possible implementation of the second aspect.

In a fifteenth aspect, a computer-readable medium is provided for storing a computer program, wherein the computer program includes instructions for executing the method in the third aspect or any possible implementation of the third aspect.

In a sixteenth aspect, a computer-readable medium is provided for storing a computer program, wherein the computer program includes instructions for executing the method in the fourth aspect or any possible implementation of the fourth aspect.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a typical subframe structure.

FIG2 is a schematic architecture diagram of a wireless communication system to which an embodiment of the present invention is applied.

FIG3 is a schematic flowchart of a data transmission method provided by an embodiment of the present invention.

FIG4 is a schematic diagram of an example of time domain resources for downlink data in a time-frequency resource region provided by an embodiment of the present invention.

FIG5 is a schematic diagram of another example of downlink data time domain resources in a time-frequency resource region provided by an embodiment of the present invention.

FIG6 is a schematic diagram of another example of downlink data time domain resources in a time-frequency resource region provided by an embodiment of the present invention.

FIG7 is a schematic diagram of another example of downlink data time domain resources in a time-frequency resource region provided by an embodiment of the present invention.

FIG8 is a schematic flowchart of a data transmission method provided by another embodiment of the present invention.

FIG9 is a schematic diagram of another example of downlink data time domain resources in a time-frequency resource region provided by an embodiment of the present invention.

FIG10 is a schematic block diagram of a data transmission device provided by an embodiment of the present invention.

FIG11 is a schematic block diagram of a data transmission device provided by another embodiment of the present invention.

FIG12 is a schematic block diagram of a data transmission device provided by another embodiment of the present invention.

FIG13 is a schematic block diagram of a data transmission device provided by another embodiment of the present invention.

FIG14 is a schematic block diagram of a data transmission device provided by another embodiment of the present invention.

FIG15 is a schematic block diagram of a data transmission device provided by another embodiment of the present invention.

FIG16 is a schematic block diagram of a data transmission device provided by another embodiment of the present invention.

FIG17 is a schematic block diagram of a data transmission device provided by another embodiment of the present invention.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the present invention will be described below with reference to the accompanying drawings in the embodiments of the present invention.

The technical solutions of the embodiments of the present invention can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD) system, Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, future evolved Public Land Mobile Network (PLMN) or future 5G system, etc.

FIG2 shows a wireless communication system 100 used in an embodiment of the present invention. The wireless communication system 100 may include at least one network device 110. The network device 100 may be a device that communicates with a terminal device. Each network device 100 may provide communication coverage for a specific geographical area and may communicate with a terminal device (e.g., UE) located within the coverage area. The network device 100 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, an evolved base station (Evolutional Node B, eNB or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (CRAN). Alternatively, the network device may be a relay station, an access point, an in-vehicle device, a wearable device, a network-side device in a future 5G network, or a network device in a future evolved PLMN.

The wireless communication system 100 also includes a plurality of terminal devices 120 located within the coverage area of the network device 110. The terminal device 120 can be mobile or fixed. The terminal device 120 can refer to an access terminal, user equipment (UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user device. The access terminal can 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 wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a future 5G network, or a terminal device in a future evolved PLMN, etc.

FIG2 exemplarily shows a network device and two terminal devices. Optionally, the wireless communication system 100 may include multiple network devices and each network device may include another number of terminal devices within its coverage area, which is not limited in this embodiment of the present invention.

Optionally, the wireless communication system 100 may further include other network entities such as a network controller and a mobility management entity, but the embodiment of the present invention is not limited thereto.

In wireless communication system 100, the time-frequency resource region may include control channel resources and data transmission resources. The control channel resources may include at least one physical resource block for transmitting a control channel, and the data transmission resources may include at least one physical resource block for performing data transmission. The control channel resources may not span the entire system bandwidth but may appear only in certain physical resource blocks. This allows terminal devices to avoid detecting control channels across the entire system bandwidth, thereby saving power consumption.

In the embodiment of the present invention, a scheduling unit may refer to a time domain resource unit for a data transmission of a terminal device scheduled by a network device. For example, a scheduling unit may correspond to one or more subframes, slots, or mini-slots in the time domain. The uplink/downlink scheduling time domain resource may refer to the time domain resource occupied by the scheduled data transmission, and may specifically be the time domain resource used for transmitting uplink/downlink data in the scheduling unit, or may be a portion of the time domain resource used for transmitting uplink/downlink data in the scheduling unit. This is not limited in the embodiment of the present invention.

The data transmission time domain resources in different scheduling units may be located in different locations, for example, with different starting symbols and/or different time domain lengths. To facilitate the terminal device to transmit and/or demodulate data, the network device may notify the terminal device of the uplink scheduling time domain resources and/or downlink scheduling time domain resources in a specific scheduling unit.

Fig. 3 shows a transmission method 200 provided by an embodiment of the present invention. The transmission method 200 can be applied to the wireless communication system 100 shown in Fig. 2, but the embodiment of the present invention is not limited thereto.

S210: The network device determines a first downlink scheduling time domain resource in a first time-frequency resource region, wherein the frequency domain resources included in the first time-frequency resource region are part of the system bandwidth.

The first time-frequency resource region may include multiple physical resource blocks. Optionally, in this embodiment of the present invention, the time-frequency resource region may correspond to a scheduling unit in the time domain and may correspond to a portion of the system bandwidth in the frequency domain, but this embodiment of the present invention is not limited thereto. The downlink scheduling time domain resources may correspond to data transmission resources in the time-frequency resource region used to transmit downlink data, but this embodiment of the present invention is not limited thereto.

In an embodiment of the present invention, the downlink data time domain resources in different time-frequency resource regions may be located at different positions in the time-frequency resource region. Optionally, the downlink data time domain resources in different time-frequency resource regions corresponding to the same time domain resources and corresponding to different frequency bands may be different. For example, the first time-frequency resource region and the second time-frequency resource region correspond to the same time domain resources and correspond to different frequency domain resources, and the starting symbol of the first downlink data time domain resource located in the first time-frequency resource region may be different from the starting symbol of the second downlink data time domain resource located in the second time-frequency resource region, and the ending symbol of the first downlink data time domain resource is the same as the ending symbol of the second downlink data time domain resource, for example, both are the ending symbols of the first time-frequency resource region and the second time-frequency resource region; or, the starting symbol of the first downlink data time domain resource is the same as the starting symbol of the second downlink data time domain resource, but the time domain length of the first downlink data time domain resource is different from the time domain length of the second downlink data time domain resource. The embodiment of the present invention is not limited to this.

S220, the network device sends indication information to the terminal device, where the indication information is used to indicate the first downlink scheduling time domain resource.

Optionally, the indication information may be specifically used to indicate at least one of a start symbol, a time domain length, and an end symbol of the first downlink data time domain resource.

Optionally, the network device may send high-layer signaling to the terminal device, and the high-layer signaling carries the indication information; or, the network device may send physical layer signaling to the terminal device, and the physical layer signaling carries the indication information. Optionally, the physical layer signaling may be specifically a physical layer common signal or a terminal-specific control signal, which is not limited in the embodiment of the present invention. Alternatively, the network device may jointly indicate the downlink scheduling time domain resources allocated to the terminal device through high-layer signaling and physical layer signaling. For example, the network device may indicate the starting symbol (or time domain length) of the downlink data time domain resources in each time-frequency resource area through high-layer signaling, and indicate the time domain length (or starting symbol) of the downlink data time domain resources allocated to the terminal device through physical layer signaling. Alternatively, the network device may indicate the downlink scheduling time domain resources allocated to the terminal device through secondary downlink control information (Downlink Control Information, DCI), wherein the first-level DCI may be used to indicate the downlink scheduling time domain resources of each time-frequency resource area, and the second-level DCI may be used to indicate the specific data scheduling configuration for the terminal device, such as indicating the time domain resource area allocated to the terminal device. The terminal device can then determine the downlink scheduling time domain resources allocated by the network device in combination with the first-level DCI and the second-level DCI. Optionally, the first-level DCI can be a common control channel from which all terminal devices can obtain information, and the second-level DCI can be a terminal-specific control channel, but the embodiments of the present invention are not limited thereto.

S230, when the terminal device receives the indication information sent by the network device, it can determine the first downlink scheduling time domain resource according to the indication information.

As an optional embodiment, the indication information may explicitly indicate the first downlink scheduling time domain resource. For example, the indication information may include at least one of the information of the starting symbol, the information of the time domain length, and the information of the ending symbol of the first downlink data time domain resource. For example, the network device may indicate at least one of the starting symbol, the time domain length, and the ending symbol of the downlink data time domain resource in each time-frequency resource area through high-layer signaling. Alternatively, the network device may also dynamically indicate at least one of the starting symbol, the time domain length, and the ending symbol of at least one physical resource block allocated to the terminal device through physical layer signaling, but the embodiments of the present invention are not limited thereto.

As another optional embodiment, the indication information may also implicitly indicate the first downlink scheduling time domain resource. For example, the indication information may implicitly indicate the first downlink scheduling time domain resource by including information about the control channel resource in the first time-frequency resource region. For example, the indication information may include the time domain length of the control channel resource. In this case, the network device may optionally transmit a public broadcast signal at the physical layer, where the public broadcast signal carries the indication information, but the embodiments of the present invention are not limited thereto.

At this time, the terminal device can determine the first downlink scheduling time domain resource based on the information of the control channel resource included in the indication information. For example, the terminal device can determine the starting symbol of the first downlink data time domain resource based on the time domain length of the control channel resource included in the indication information, and determine the first downlink scheduling time domain resource based on the starting symbol of the first downlink data time domain resource. Specifically, the terminal device can determine the end symbol of the control channel resource based on the time domain length of the control channel resource, and determine the starting symbol of the first downlink data time domain resource as the Nth symbol after the end symbol of the control channel resource, where N can be an integer greater than or equal to 1, and the specific value of N can be defined in the protocol or pre-configured, and the embodiments of the present invention are not limited thereto.

As shown in Figure 4, time-frequency resource region 1 and time-frequency resource region 3 include control channel resources, while time-frequency resource region 2 does not include control channel resources. In this case, the starting symbol of the downlink data time domain resources in time-frequency resource region 1 and time-frequency resource region 3 can be the first symbol after the control channel resources. The time domain lengths of the control channel resources in time-frequency resource region 1 and time-frequency resource region 3 can be different, and accordingly, the starting symbols of the downlink data time domain resources in time-frequency resource region 1 and time-frequency resource region 3 can be different. Since time-frequency resource region 2 does not include control channel resources, the starting symbol of the downlink data time domain resources in time-frequency resource region 2 can be the first symbol of time-frequency resource region 2.

In the example shown in FIG4 , the downlink data time domain resource is immediately adjacent to the control channel resource in the same time-frequency resource region, that is, the starting symbol of the downlink data time domain resource is the first symbol after the end symbol of the control channel resource. Optionally, there may also be a certain time interval between the downlink data time domain resource and the control channel resource in the same time-frequency resource region, that is, the starting symbol of the downlink data time domain resource may be any symbol after the control channel resource. In this way, the system can support the service requirements of different service types. For example, in Coordination of Multiple Points (CoMP), the starting symbols of data resources of different network nodes participating in the collaboration need to be consistent; in interference coordination of adjacent cells/beams, the starting symbols of adjacent cells/beams can be coordinated with each other; when supporting resource allocation and multiplexing of different services, the starting symbols of data resources of certain services that are not sensitive to delay can be configured after services with high delay requirements. As shown in FIG5 , the data time domain resources for enhanced mobile broadband data (Enhanced Mobile BroadBand, eMBB) are located after the data time domain resources for ultra reliability and low latency communication (Ultra Reliability and Low Latency Communication, URLLC).

At this time, optionally, the network device may determine the downlink data time domain resource allocated to the terminal device based on the service type of the terminal device. The network device may send a terminal-specific control signal to the terminal device, where the terminal-specific control signal is used to indicate the time domain of the downlink data time domain resource allocated by the network device to the terminal device. For example, the terminal-specific control signal carries information about the starting symbol of the downlink data time domain resource, but embodiments of the present invention are not limited thereto.

Optionally, the starting symbol of the first downlink data time domain resource is the next symbol of the end symbol of the control channel resource in the first time-frequency resource region; or the starting symbol of the first downlink data time domain resource is separated from the end symbol of the control channel resource in the first time-frequency resource region by at least one symbol.

Optionally, the indication information can be specifically used to indicate the starting symbol of the first downlink data time domain resource. In this case, the end symbol or time domain length of the first downlink data time domain resource can be defined or pre-configured in the protocol. For example, the end symbol of the first downlink data time domain resource can be the end symbol of the first time-frequency resource area. In this case, the terminal device can determine the first downlink scheduling time domain resource based on the starting symbol and end symbol of the first downlink data time domain resource, but the embodiments of the present invention are not limited to this.

Optionally, the indication information can also be specifically used to indicate the time domain length of the first downlink data time domain resource. For example, as shown in Figure 5, if the service type of the terminal device is eMBB, optionally, the network device can send a terminal-specific control signal to the terminal device, and the terminal-specific control signal is used for the time domain length of the first downlink data time domain resource allocated by the network device to the terminal device. At this time, the terminal device can determine the end symbol of the first downlink data time domain resource as the end symbol of the first time-frequency resource area, and determine the first downlink scheduling time domain resource based on the determined end symbol and the time domain length indicated by the terminal-specific control signal, but the embodiment of the present invention is not limited to this. For another example, as shown in Figure 6, the time-frequency resource area 3 includes multiple micro-slots, wherein each micro-slot can include four symbols. The first downlink scheduling time domain resource can include at least two micro-slots. Optionally, the network device can perform cross-micro-time slot scheduling. For example, the network device can send a terminal-specific control signal to the terminal device on the first micro-time slot in the time-frequency resource area 3. The terminal-specific control signal is used to indicate the time domain length of the first downlink data time domain resource, wherein the first downlink data time domain resource occupies at least two micro-time slots after the first micro-time slot. For example, the terminal-specific control signal can indicate the number of symbols used to carry data included in the first downlink data time domain resource. At this time, the terminal device can determine the time domain length of the first downlink data time domain resource based on the indication information, and determine the first downlink scheduling time domain resource based on the determined time domain length. The embodiments of the present invention are not limited to this.

Optionally, the indication information can also be specifically used to indicate the end symbol of the first downlink data time domain resource. As shown in Figure 6, the time-frequency resource area 1 corresponds to a self-contained scheduling unit in the time domain. The self-contained scheduling unit may include a downlink transmission period, an uplink and downlink switching period, and an uplink transmission period. At this time, the indication information can be specifically used to indicate the end symbol of the first downlink data time domain resource located in the downlink transmission period. For example, the network device can send a common control signal, and the common control signal can carry information about the end symbol of the first downlink data time domain resource. Or, the common control signal can carry information about the uplink and downlink switching period in the self-contained scheduling unit. At this time, the terminal device can determine the first downlink scheduling time domain resource located in the downlink transmission period based on the information about the uplink and downlink switching period. For example, the terminal device can determine the starting symbol of the uplink and downlink switching period based on the information about the uplink and downlink switching period, and determine the end symbol of the first downlink data time domain resource as the symbol before the starting symbol of the uplink and downlink switching period, and determine the first downlink scheduling time domain resource based on the determined end symbol. Optionally, the starting symbol or time domain length of the first downlink data time domain resource can be defined in the protocol, or the indication information can further carry information about the starting symbol or time domain length of the first downlink data time domain resource, or carry information about control channel resources, but the embodiments of the present invention are not limited to this.

Optionally, if the downlink data transmission resources allocated by the network device to the terminal device include different subcarrier spacings, since different subcarrier spacings correspond to different symbol lengths, they correspond to different time slot lengths. In order to improve spectrum utilization, the time domain lengths of multiple downlink data time domain resources with different subcarrier spacings can be defined or pre-configured in the protocol to be consistent. For example, the downlink data time domain resources in multiple time-frequency resource areas with different subcarrier spacings can be based on the downlink data time domain resources in the time-frequency resource area with the largest time domain granularity. This can ensure that the downlink data time domain resources at different subcarrier spacings end at the same time, but the embodiments of the present invention are not limited to this. As shown in Figure 7, the network device allocates time-frequency resource areas with three different subcarrier spacings, f, 2f, and 4f, to the terminal device. The downlink data time domain resources in these time-frequency resource areas can be based on the downlink data time domain resources in the time-frequency resource area with a subcarrier spacing of f.

Optionally, if the network device configures multiple time-frequency resource areas including the first time-frequency resource area for the terminal device, wherein the multiple time-frequency resource areas have different subcarrier spacings, then the indication information may carry information of the third downlink scheduling time domain resource in the third time-frequency resource area, wherein the third time-frequency resource area is the time-frequency resource area with the smallest subcarrier spacing among the multiple time-frequency resource areas. At this time, the terminal device can determine the end moment of the third downlink data time domain resource based on the indication information, and determine the end moment of the first downlink data time domain resource as the end moment of the third downlink data time domain resource. At this time, the moment corresponding to the end symbol of the first downlink data time domain resource is the end moment of the third downlink data time domain resource. In this way, the terminal device can determine the end symbol of the first downlink data time domain resource based on the end moment of the third downlink data time domain resource. The network device can configure multiple time-frequency resource areas for the downlink data transmission of the terminal device, wherein the multiple time-frequency resource areas can correspond to the same time domain resources. Optionally, the starting time of the first downlink data time domain resource can be the same as or different from the starting time of the third downlink data time domain resource. This is not limited in the embodiment of the present invention.

S240, the terminal device and the network device perform data transmission on the first downlink data time domain resource.

Therefore, the data transmission method provided by an embodiment of the present invention determines the first downlink scheduling time domain resource located in the first time-frequency resource area through a network device, and sends indication information for indicating the first downlink scheduling time domain resource to a terminal device, wherein the frequency domain resources included in the first time-frequency resource area are part of the system bandwidth. The terminal device determines the first downlink scheduling time domain resource based on the indication information, and receives the downlink data sent by the network device on the first downlink scheduling time domain resource, which can improve system performance and is conducive to supporting different business needs.

FIG8 shows a transmission method 300 provided by an embodiment of the present invention. The transmission method 300 can be applied to the wireless communication system 100 shown in FIG2 , but the embodiment of the present invention is not limited thereto.

S310 , the network device determines an uplink scheduling time domain resource for transmitting uplink data in a first scheduling unit, hereinafter referred to as a first uplink scheduling time domain resource.

In an embodiment of the present invention, the uplink scheduling time domain resources in different scheduling units may have different time domain positions in the scheduling unit, for example, different starting symbols and/or different time domain lengths. For example, the starting symbol of a first uplink scheduling time domain resource used for transmitting uplink data in a first scheduling unit may be the first symbol of the first scheduling unit, while the starting symbol of a second uplink scheduling time domain resource used for transmitting uplink data in a second scheduling unit may be the Mth symbol in the second scheduling unit, where M is an integer greater than 1. The embodiments of the present invention are not limited thereto.

S320, the network device sends indication information to the terminal device, where the indication information is used to indicate the first uplink scheduling time domain resource in the first scheduling unit.

Optionally, the indication information may be specifically used to indicate at least one of a start symbol, a time domain length, and an end symbol of the first uplink scheduling time domain resource.

Optionally, the network device may send high-layer signaling to the terminal device, and the high-layer signaling carries the indication information; or, the network device may send physical layer signaling to the terminal device, and the physical layer signaling carries the indication information. Optionally, the physical layer signaling may be specifically a physical layer common signal or a terminal-specific control signal, which is not limited in the embodiment of the present invention. Alternatively, the network device may jointly indicate the uplink scheduling time domain resources allocated to the terminal device through high-layer signaling and physical layer signaling. For example, the network device may indicate the starting symbol (or time domain length) of the uplink scheduling time domain resources in each scheduling unit through high-layer signaling, and indicate the time domain length (or starting symbol) of the uplink scheduling time domain resources allocated to the terminal device through physical layer signaling. Alternatively, the network device may indicate the uplink scheduling time domain resources allocated to the terminal device through a secondary DCI, wherein the first-level DCI may be used to indicate the uplink scheduling time domain resources in each scheduling unit, and the second-level DCI may be used to indicate the specific data scheduling configuration for the terminal device, such as indicating the scheduling unit allocated to the terminal device. The terminal device can then determine the uplink scheduling time domain resources allocated by the network device in combination with the first-level DCI and the second-level DCI. Optionally, the first-level DCI can be a common control channel from which all terminal devices can obtain information, and the second-level DCI can be a terminal-specific control channel, but the embodiments of the present invention are not limited thereto.

S330, when the terminal device receives the indication information sent by the network device, it can determine the first uplink scheduling time domain resource according to the indication information.

As an optional embodiment, the indication information may explicitly or implicitly indicate the first uplink scheduling time domain resource. For example, the indication information may include at least one of the information of the starting symbol, the information of the time domain length, and the information of the ending symbol of the first uplink scheduling time domain resource. For example, the network device may indicate at least one of the starting symbol, the time domain length, and the ending symbol of the uplink scheduling time domain resource in each scheduling unit through high-layer signaling. Alternatively, the network device may also dynamically indicate at least one of the starting symbol, the time domain length, and the ending symbol of at least one physical resource block allocated to the terminal device through physical layer signaling, but the embodiments of the present invention are not limited thereto.

Optionally, the indication information can be specifically used to indicate the starting symbol of the first uplink scheduling time domain resource. In this case, the ending symbol or time domain length of the first uplink scheduling time domain resource can be defined in the protocol or pre-configured. For example, the ending symbol of the first uplink scheduling time domain resource can be the ending symbol of the first scheduling unit. In this case, the terminal device can determine the first uplink scheduling time domain resource based on the starting symbol and the ending symbol of the first uplink scheduling time domain resource, but the embodiment of the present invention is not limited to this.

Optionally, the first scheduling unit may be specifically a self-contained scheduling unit. At this time, the network device may send a common control signal, and the common control signal may carry information about the first uplink scheduling time domain resource. Alternatively, the common control signal may carry information about the uplink and downlink switching period in the first scheduling unit. At this time, the terminal device may determine the first uplink scheduling time domain resource based on the information about the uplink and downlink switching period. For example, the terminal device may determine the end symbol of the uplink and downlink switching period based on the information about the uplink and downlink switching period, and determine the starting symbol of the first uplink scheduling time domain resource as the first symbol after the end symbol of the uplink and downlink switching period, and determine the first uplink scheduling time domain resource based on the determined starting symbol, but the embodiments of the present invention are not limited thereto.

Optionally, the indication information can also be specifically used to indicate the time domain length of the first uplink scheduling time domain resource. For example, the first scheduling unit may include multiple micro-time slots. The first uplink scheduling time domain resource may include at least two micro-time slots of the multiple micro-time slots. Optionally, the network device can perform cross-micro-time slot scheduling. For example, the network device can send a terminal-specific control signal to the terminal device on the first micro-time slot in the first scheduling unit. The terminal-specific control signal is used to indicate the time domain length of the first uplink scheduling time domain resource, wherein the first uplink scheduling time domain resource includes at least two micro-time slots located after the first micro-time slot. For example, the terminal-specific control signal can indicate the number of symbols included in the first uplink scheduling time domain resource. At this time, the terminal device can determine the time domain length of the first uplink scheduling time domain resource based on the indication information, and determine the first uplink scheduling time domain resource based on the determined time domain length. The embodiments of the present invention are not limited to this.

Optionally, the indication information may also be specifically used to indicate the end symbol of the first uplink scheduling time domain resource, but the embodiment of the present invention is not limited thereto.

Optionally, the uplink scheduling time domain resources in different self-contained scheduling units may be in different positions. For example, as shown in FIG9 , the starting symbol of the uplink scheduling time domain resource may be specifically the starting symbol of the short format control channel (short format of control channel) located at the end of the time slot, and the ending symbol of the uplink scheduling time domain resource may be specifically the ending symbol of the short format control channel. Alternatively, the starting symbol of the uplink scheduling time domain resource may be the first symbol after the uplink and downlink switching symbol, and the ending symbol of the uplink scheduling time domain resource may be the symbol before the starting symbol of the short format control channel. Alternatively, the starting symbol of the uplink scheduling time domain resource may be the first symbol after the uplink and downlink switching period, and the ending symbol of the uplink scheduling time domain resource may be the ending symbol of the short format control channel, but the embodiments of the present invention are not limited thereto.

Optionally, if the uplink data transmission resources allocated by the network device to the terminal device include different subcarrier spacings, the time domain lengths of multiple uplink scheduling time domain resources with different subcarrier spacings can be defined or pre-configured in the protocol to remain consistent. For example, the multiple uplink scheduling time domain resources with different subcarrier spacings can be based on the uplink scheduling time domain resource with the largest time domain granularity, but the embodiments of the present invention are not limited to this.

Optionally, if the network device configures multiple time-frequency resource areas within the first scheduling unit for the terminal device, wherein the multiple time-frequency resource areas have different subcarrier spacings, then the indication information may carry information of a third uplink scheduling time domain resource located in a third time-frequency resource area, wherein the third time-frequency resource area is the scheduling unit with the smallest subcarrier spacing among the multiple time-frequency resource areas. At this time, the terminal device can determine the end moment of the third uplink scheduling time domain resource based on the indication information, and determine the moment corresponding to the end symbol of the first uplink scheduling time domain resource as the end moment of the third uplink scheduling time domain resource. In this way, the terminal device can determine the end symbol of the first downlink data time domain resource based on the end moment of the third downlink data time domain resource. The network device can configure multiple time-frequency resource areas for the uplink data transmission of the terminal device in the first scheduling unit. Optionally, the start moment of the first uplink scheduling time domain resource may be the same as or different from the start moment of the third uplink scheduling time domain resource, which is not limited in this embodiment of the present invention.

S340, the terminal device and the network device perform data transmission on the first uplink scheduling time domain resource.

Therefore, the data transmission method provided by an embodiment of the present invention determines the first uplink scheduling time domain resource in the first scheduling unit through a network device, and sends indication information for indicating the first uplink scheduling time domain resource to a terminal device, wherein the terminal device determines the first uplink scheduling time domain resource based on the indication information, and sends uplink data to the network device on the first uplink scheduling time domain resource, which can improve system performance and is conducive to supporting different business needs.

It should be understood that the order of execution of the above processes does not necessarily mean the order in which they are executed. The order in which the processes are executed should be determined by their functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

It should also be understood that the examples in Figures 4 to 7 and 9 are intended to help those skilled in the art better understand the embodiments of the present invention, and are not intended to limit the scope of the embodiments of the present invention. Those skilled in the art can obviously make various equivalent modifications or variations based on the above-mentioned illustrated examples, and such modifications or variations also fall within the scope of the embodiments of the present invention.

The data transmission method according to an embodiment of the present invention is described in detail above with reference to FIG. 2 to FIG. 9 . The data transmission device according to an embodiment of the present invention will be described in detail below with reference to FIG. 10 to FIG. 17 .

FIG10 shows a data transmission device 400 provided in an embodiment of the present invention, including:

A receiving unit 410 is configured to receive indication information sent by a network device, where the indication information is used to indicate a first downlink scheduling time domain resource in a first time-frequency resource region, where the frequency domain resources included in the first time-frequency resource region are part of the system bandwidth;

The determining unit 420 is configured to determine the first downlink scheduling time domain resource according to the indication information received by the receiving unit 410;

The receiving unit 410 is further configured to receive data sent by the network device on the first downlink data time domain resource determined by the determining unit 420 .

Optionally, the indication information is used to indicate at least one of a start symbol, a time domain length, and an end symbol of the first downlink data time domain resource.

Optionally, the first downlink scheduling time domain resource is different from the second downlink scheduling time domain resource in the second time-frequency resource region, wherein the first time-frequency resource region and the second time-frequency resource region correspond to the same time domain resource and correspond to different frequency domain resources.

Optionally, the first downlink scheduling time domain resource is different from the second downlink scheduling time domain resource in the second time-frequency resource region, including:

The starting symbol of the first downlink scheduling time domain resource is different from the starting symbol of the second downlink scheduling time domain resource; and/or

The time domain length of the first downlink scheduling time domain resource is different from the time domain length of the second downlink scheduling time domain resource.

Optionally, the start symbol of the first downlink data time domain resource is immediately adjacent to the end symbol of the control channel resource in the first time-frequency resource region; or

There is at least one symbol between the start symbol of the first downlink data time domain resource and the end symbol of the control channel resource in the first time-frequency resource region.

Optionally, the indication information includes information about control channel resources in the first time-frequency resource region. In this case, the determining unit 420 is specifically configured to determine a starting symbol of the first downlink data time domain resource according to the information about the control channel resources.

Optionally, the first time-frequency resource region includes a self-contained scheduling unit, and the self-contained scheduling unit includes a downlink transmission period, an uplink-downlink switching period, and an uplink transmission period.

At this time, optionally, the indication information includes information of the uplink and downlink switching period in the self-contained scheduling unit; accordingly, the determination unit 420 is specifically used to determine the end symbol of the first downlink data time domain resource according to the information of the uplink and downlink switching period.

Optionally, the receiving unit 410 is specifically configured to receive a high-layer signaling sent by a network device, where the high-layer signaling or a physical layer common signal carries the indication information; or

The receiving unit 410 is specifically configured to receive a physical layer common signal sent by a network device, where the physical layer common signal carries the indication information; or

The receiving unit 410 is specifically configured to receive a terminal-specific control signal sent by a network device, where the terminal-specific control signal carries the indication information.

Optionally, the first downlink data time domain resource includes multiple mini-time slots, and the indication information is used to indicate the total length of the multiple mini-time slots.

Optionally, if the network device configures multiple time-frequency resource areas including the first time-frequency resource area for the terminal device, wherein the multiple time-frequency resource areas have different subcarrier spacings, then the indication information includes information of a third downlink scheduling time domain resource in a third time-frequency resource area, wherein the third time-frequency resource area is the time-frequency resource area with the smallest subcarrier spacing among the multiple time-frequency resource areas; accordingly, the determination unit 420 is specifically used to determine the end time of the third downlink data time domain resource according to the indication information, and determine the time corresponding to the end symbol of the first downlink data time domain resource as the end time of the third downlink data time domain resource.

It should be understood that the apparatus 400 herein is embodied in the form of a functional unit. In an optional example, those skilled in the art will appreciate that the apparatus 400 may be specifically a terminal device in the above-described embodiment, and the apparatus 400 may be used to execute the various processes and/or steps corresponding to the terminal device in the above-described method embodiment. To avoid repetition, detailed description thereof will not be given here.

FIG11 shows a data transmission device 500 provided by another embodiment of the present invention, including:

A receiving unit 510 is configured to receive indication information sent by a network device, where the indication information is used to indicate a first uplink scheduling time domain resource for transmitting uplink data in a first scheduling unit, wherein a time domain position of the first uplink scheduling time domain resource in the first scheduling unit is different from a time domain position of a second uplink scheduling time domain resource in the second scheduling unit, and the second uplink scheduling time domain resource is a time domain resource for transmitting uplink data in the second scheduling unit;

The determining unit 520 is configured to determine the first uplink scheduling time domain resource according to the indication information received by the receiving unit 510;

The sending unit 530 is configured to send data to the network device on the first uplink scheduling time domain resource determined by the determining unit 520.

Optionally, the indication information is used to indicate at least one of a starting symbol, a time domain length, and an ending symbol of the first uplink scheduling time domain resource.

Optionally, the first uplink scheduling time domain resource is different from the second uplink scheduling time domain resource, including:

The starting symbol of the first uplink scheduling time domain resource is different from the starting symbol of the second uplink scheduling time domain resource; and/or

The time domain length of the first uplink scheduling time domain resource is different from the time domain length of the second uplink scheduling time domain resource.

Optionally, the first scheduling unit is specifically a self-contained scheduling unit, which includes a downlink transmission period, an uplink and downlink switching period, and an uplink transmission period.

Optionally, the starting symbol of the first uplink scheduling time domain resource is the starting symbol of the short format control channel, and the ending symbol of the first uplink scheduling time domain resource is the ending symbol of the short format control channel.

Optionally, the starting symbol of the first uplink scheduling time domain resource is the first symbol after the uplink and downlink switching period, and the ending symbol of the first uplink scheduling time domain resource is the previous symbol of the short format control channel.

Optionally, the starting symbol of the first uplink scheduling time domain resource is the first symbol after the uplink and downlink switching period, and the ending symbol of the first uplink scheduling time domain resource is the ending symbol of the short format control channel.

Optionally, the receiving unit 510 is specifically configured to receive a high-layer signaling sent by a network device, where the high-layer signaling or a physical layer common signal carries the indication information; or

The receiving unit 510 is specifically configured to receive a physical layer common signal sent by a network device, where the physical layer common signal carries the indication information; or

The receiving unit 510 is specifically configured to receive a terminal-specific control signal sent by a network device, where the terminal-specific control signal carries the indication information.

Optionally, the first uplink scheduling time domain resource includes multiple mini-time slots, and the indication information is used to indicate the total length of the multiple mini-time slots.

Optionally, if the network device configures multiple time-frequency resource areas within the first scheduling unit for the terminal device, wherein the multiple time-frequency resource areas have different subcarrier spacings, then the indication information includes information about a third uplink scheduling time domain resource in a third time-frequency resource area, wherein the third time-frequency resource area is a time-frequency resource area with the smallest subcarrier spacing among the multiple time-frequency resource areas;

The determining unit 520 is specifically configured to determine the end time of the third uplink data time domain resource according to the indication information, and determine the time corresponding to the end symbol of the first uplink data time domain resource as the end time of the third uplink data time domain resource.

It should be understood that the apparatus 500 herein is embodied in the form of a functional unit. In an optional example, those skilled in the art will appreciate that the apparatus 500 may be specifically a terminal device in the above-described embodiment, and the apparatus 500 may be used to execute the various processes and/or steps corresponding to the terminal device in the above-described method embodiment. To avoid repetition, detailed description thereof will not be given here.

FIG12 shows a data transmission device 600 provided by another embodiment of the present invention, including:

The determining unit 610 is configured to determine a first downlink scheduling time domain resource in a first time-frequency resource region, wherein the frequency domain resources included in the first time-frequency resource region are part of the system bandwidth;

The sending unit 620 is used to send indication information to the terminal device, where the indication information is used to indicate the first downlink scheduling time domain resource determined by the determining unit 610.

Optionally, the indication information is used to indicate at least one of a start symbol, a time domain length, and an end symbol of the first downlink data time domain resource.

Optionally, the first downlink scheduling time domain resource is different from the second downlink scheduling time domain resource in the second time-frequency resource region, wherein the first time-frequency resource region and the second time-frequency resource region correspond to the same time domain resource and correspond to different frequency domain resources.

Optionally, the first downlink scheduling time domain resource is different from the second downlink scheduling time domain resource in the second time-frequency resource region, including:

The starting symbol of the first downlink scheduling time domain resource is different from the starting symbol of the second downlink scheduling time domain resource; and/or

The time domain length of the first downlink scheduling time domain resource is different from the time domain length of the second downlink scheduling time domain resource.

Optionally, the start symbol of the first downlink data time domain resource is immediately adjacent to the end symbol of the control channel resource in the first time-frequency resource region; or

There is at least one symbol between the start symbol of the first downlink data time domain resource and the end symbol of the control channel resource in the first time-frequency resource region.

Optionally, the indication information includes information about control channel resources in the first time-frequency resource region.

Optionally, the first time-frequency resource region includes a self-contained scheduling unit, which includes a downlink transmission period, an uplink and downlink switching period, and an uplink transmission period; at this time, optionally, the indication information includes information on the uplink and downlink switching period in the self-contained scheduling unit.

Optionally, the sending unit 620 is specifically configured to send a higher-layer signaling, where the higher-layer signaling carries the indication information; or

The sending unit 620 is specifically configured to send a physical layer common signal, where the physical layer common signal carries the indication information; or

The sending unit 620 is specifically configured to send a terminal-specific control signal to the terminal device, where the terminal-specific control signal carries the indication information.

Optionally, the first downlink data time domain resource includes multiple mini-time slots, and the indication information is used to indicate the total length of the multiple mini-time slots.

Optionally, if the network device configures multiple time-frequency resource areas including the first time-frequency resource area for the terminal device, wherein the multiple time-frequency resource areas have different subcarrier spacings, then the indication information includes information of a third downlink scheduling time domain resource in a third time-frequency resource area, wherein the third time-frequency resource area is the time-frequency resource area with the smallest subcarrier spacing among the multiple time-frequency resource areas.

It should be understood that the apparatus 600 herein is embodied in the form of a functional unit. In an alternative example, those skilled in the art will appreciate that the apparatus 600 may be specifically a network device in the above-described embodiment, and the apparatus 600 may be used to execute the various processes and/or steps corresponding to the network device in the above-described method embodiment. To avoid repetition, detailed description thereof will not be given here.

FIG13 shows a data transmission device 700 provided by another embodiment of the present invention, including:

a determining unit 710, configured to determine a first uplink scheduling time domain resource for transmitting uplink data in a first scheduling unit, wherein a position of the first uplink scheduling time domain resource in the first scheduling unit is different from a position of a second uplink scheduling time domain resource in the second scheduling unit, and the second uplink scheduling time domain resource is a time domain resource for transmitting uplink data in the second scheduling unit;

The sending unit 720 is used to send indication information to the terminal device, where the indication information is used to indicate the first uplink scheduling time domain resource in the first scheduling unit determined by the determining unit 710.

Optionally, the indication information is used to indicate at least one of a starting symbol, a time domain length, and an ending symbol of the first uplink scheduling time domain resource.

Optionally, the time domain resources used for transmitting uplink data in the first scheduling unit are different from the time domain resources used for transmitting uplink data in the second scheduling unit, including:

The starting symbol of the first uplink scheduling time domain resource is different from the starting symbol of the second uplink scheduling time domain resource; and/or

The time domain length of the first uplink scheduling time domain resource is different from the time domain length of the second uplink scheduling time domain resource.

Optionally, the first scheduling unit is specifically a self-contained scheduling unit, which includes a downlink transmission period, an uplink and downlink switching period, and an uplink transmission period.

Optionally, the starting symbol of the first uplink scheduling time domain resource is the starting symbol of the short format control channel, and the ending symbol of the first uplink scheduling time domain resource is the ending symbol of the short format control channel.

Optionally, the starting symbol of the first uplink scheduling time domain resource is the first symbol after the uplink and downlink switching period, and the ending symbol of the first uplink scheduling time domain resource is the previous symbol of the short format control channel.

Optionally, the starting symbol of the first uplink scheduling time domain resource is the first symbol after the uplink and downlink switching period, and the ending symbol of the first uplink scheduling time domain resource is the ending symbol of the short format control channel.

Optionally, the sending unit 720 is specifically configured to send a higher-layer signaling, where the higher-layer signaling carries the indication information; or

The sending unit 720 is specifically configured to send a physical layer common signal, where the physical layer common signal carries the indication information; or

The sending unit 720 is specifically configured to send a terminal-specific control signal to the terminal device, where the terminal-specific control signal carries the indication information.

Optionally, the first uplink scheduling time domain resource includes multiple mini-time slots, and the indication information is used to indicate the total length of the multiple mini-time slots.

Optionally, if the network device configures multiple time-frequency resource areas within the first scheduling unit for the terminal device, wherein the multiple time-frequency resource areas have different subcarrier spacings, then the indication information includes information of a third uplink scheduling time domain resource in a third time-frequency resource area, wherein the third time-frequency resource area is the time-frequency resource area with the smallest subcarrier spacing among the multiple time-frequency resource areas.

It should be understood that the apparatus 700 herein is embodied in the form of a functional unit. In an alternative example, those skilled in the art will appreciate that the apparatus 700 may be specifically a network device in the above-described embodiment, and the apparatus 700 may be used to execute the various processes and/or steps corresponding to the network device in the above-described method embodiment. To avoid repetition, detailed description thereof will not be given here.

It should also be understood that in embodiments of the present invention, the term "unit" may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (such as a shared processor, a dedicated processor or a group processor, etc.) and memory for executing one or more software or firmware programs, a combined logic circuit and/or other suitable components that support the described functions.

FIG14 shows a data transmission device 800 provided by an embodiment of the present invention, including a processor 810 and a memory 820, wherein the memory 820 is used to store instructions, and the processor 810 is used to execute the instructions stored in the memory 820, wherein the execution of the instructions causes the processor 810 to perform the following operations:

receiving indication information sent by a network device, where the indication information is used to indicate a first downlink scheduling time domain resource in a first time-frequency resource region, where the frequency domain resources included in the first time-frequency resource region are part of the system bandwidth;

Determine the first downlink scheduling time domain resource according to the indication information;

Data sent by the network device is received on the first downlink data time domain resource.

Optionally, the indication information includes information about control channel resources in the first time-frequency resource region. In this case, the processor 810 is specifically configured to determine a starting symbol of the first downlink data time domain resource according to the information about the control channel resources.

At this time, optionally, the indication information includes information of the uplink and downlink switching period in the self-contained scheduling unit; accordingly, the processor 810 is specifically configured to determine the end symbol of the first downlink data time domain resource according to the information of the uplink and downlink switching period.

Optionally, if the network device configures multiple time-frequency resource areas including the first time-frequency resource area for the terminal device, wherein the multiple time-frequency resource areas have different subcarrier spacings, then the indication information includes information of a third downlink scheduling time domain resource in a third time-frequency resource area, wherein the third time-frequency resource area is the time-frequency resource area with the smallest subcarrier spacing among the multiple time-frequency resource areas; accordingly, the processor 810 is specifically used to determine the end time of the third downlink data time domain resource according to the indication information, and determine the time corresponding to the end symbol of the first downlink data time domain resource as the end time of the third downlink data time domain resource.

In an optional example, those skilled in the art may understand that the apparatus 800 may be specifically the terminal device in the above embodiment, and the apparatus 800 may be used to execute the various processes and/or steps corresponding to the terminal device in the above method embodiment. To avoid repetition, they will not be described here.

FIG15 shows a data transmission device 900 provided by another embodiment of the present invention, including a processor 910 and a memory 920, wherein the memory 920 is used to store instructions, and the processor 910 is used to execute the instructions stored in the memory 920, wherein the execution of the instructions causes the processor 910 to perform the following operations:

Receiving indication information sent by a network device, the indication information being used to indicate a first uplink scheduling time domain resource for transmitting uplink data in a first scheduling unit, wherein a time domain position of the first uplink scheduling time domain resource in the first scheduling unit is different from a time domain position of a second uplink scheduling time domain resource in the second scheduling unit, and the second uplink scheduling time domain resource is a time domain resource for transmitting uplink data in the second scheduling unit;

Determining the first uplink scheduling time domain resource according to the indication information;

Data is sent to the network device on the first uplink scheduling time domain resource.

In an optional example, those skilled in the art may understand that the apparatus 900 may be specifically the terminal device in the above embodiment, and the apparatus 900 may be used to execute the various processes and/or steps corresponding to the terminal device in the above method embodiment. To avoid repetition, they will not be described here.

FIG16 shows a data transmission device 1000 provided by another embodiment of the present invention, including: a processor 1010 and a memory 1020, wherein the memory 1020 is used to store instructions, and the processor 1010 is used to execute the instructions stored in the memory 1020, wherein the execution of the instructions causes the processor 1010 to perform the following operations:

Determine a first downlink scheduling time domain resource in a first time-frequency resource region, wherein the frequency domain resources included in the first time-frequency resource region are part of the system bandwidth;

Send indication information to the terminal device, where the indication information is used to indicate the first downlink scheduling time domain resource.

In an optional example, those skilled in the art may understand that the device 1000 may be specifically a network device in the above-mentioned embodiment, and the device 1000 may be used to execute the various processes and/or steps corresponding to the network device in the above-mentioned method embodiment. To avoid repetition, they will not be described here.

FIG17 shows a data transmission device 1100 provided by another embodiment of the present invention, including a processor 1110 and a memory 1120, wherein the memory 1120 is used to store instructions, and the processor 1110 is used to execute the instructions stored in the memory 1120, wherein the execution of the instructions causes the processor 1110 to perform the following operations:

Determining a first uplink scheduling time domain resource for transmitting uplink data in a first scheduling unit, wherein a position of the first uplink scheduling time domain resource in the first scheduling unit is different from a position of a second uplink scheduling time domain resource in the second scheduling unit, and the second uplink scheduling time domain resource is a time domain resource for transmitting uplink data in the second scheduling unit;

Send indication information to the terminal device, where the indication information is used to indicate the first uplink scheduling time domain resource in the first scheduling unit.

In an optional example, those skilled in the art may understand that the device 1100 may be specifically a network device in the above-mentioned embodiment, and the device 1100 may be used to execute the various processes and/or steps corresponding to the network device in the above-mentioned method embodiment. To avoid repetition, they will not be described here.

It should be understood that in the embodiments of the present invention, the processor may be a central processing unit (CPU), or may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor, etc.

The memory may include read-only memory and random access memory, and provides instructions and data to the processor. A portion of the memory may also include non-volatile random access memory. For example, the memory may also store device type information. The processor may be configured to execute instructions stored in the memory, and when the processor executes the instructions, the processor may perform the steps corresponding to the terminal device in the above-described method embodiment.

During implementation, each step of the above method can be completed by an integrated logic circuit of hardware in a processor or by instructions in the form of software. The steps of the method disclosed in conjunction with the embodiments of the present invention can be directly embodied as being executed by a hardware processor, or can be executed by a combination of hardware and software modules in the processor. The software module can be located in a storage medium mature 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, a register, etc. The storage medium is located in a memory, and the processor executes the instructions in the memory, and in combination with its hardware, completes the steps of the above method. To avoid repetition, a detailed description is not given here.

It should be understood that the above description of the embodiments of the present invention focuses on emphasizing the differences between the various embodiments. The same or similar points not mentioned can be referenced to each other. For the sake of brevity, they will not be repeated here.

Furthermore, the terms "system" and "network" are often used interchangeably in this document. The term "and/or" is simply a description of an association between related objects, indicating that three possible relationships exist. For example, "A and/or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character "/" generally indicates an "or" relationship between the related objects.

Those skilled in the art will appreciate that the various method steps and units described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the steps and components of each embodiment have been generally described in terms of function in the above description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, or can be electrical, mechanical or other forms of connection.

The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected according to actual needs to achieve the objectives of the embodiments of the present invention.

In addition, the functional units in the various embodiments of the present invention may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims (86)

1. A data transmission method, characterized in that it includes: The terminal device receives indication information sent by the network device. This indication information indicates a first downlink scheduling time-domain resource in a first time-frequency resource region. The first time-frequency resource region corresponds to a scheduling unit in the time domain, and the frequency-domain resources included in the first time-frequency resource region are a portion of the system bandwidth. The network device configures multiple time-frequency resource regions for the terminal device, including the first time-frequency resource region. These multiple time-frequency resource regions have different subcarrier spacings. The multiple time-frequency resource regions correspond to different frequency bands within the same time-frequency resource. The terminal device receives data sent by the network device on the first downlink data time domain resource according to the instruction information. 2. The method according to claim 1, wherein the indication information is used to indicate at least one of the start symbol, time domain length, and end symbol of the first downlink data time domain resource. 3. The method according to claim 1 or 2, wherein the first downlink scheduling time domain resource is different from the second downlink scheduling time domain resource in the second time-frequency resource region, wherein the first time-frequency resource region and the second time-frequency resource region correspond to the same time domain resource and different frequency domain resources. 4. The method according to claim 3, wherein the first downlink scheduling time-domain resource is different from the second downlink scheduling time-domain resource in the second time-frequency resource region, including: The start symbol of the first downlink scheduling time-domain resource is different from the start symbol of the second downlink scheduling time-domain resource; and/or The time domain length of the first downlink scheduling time domain resource is different from the time domain length of the second downlink scheduling time domain resource. 5. The method according to claim 1, wherein the start symbol of the first downlink data time-domain resource is immediately adjacent to the end symbol of the control channel resource in the first time-frequency resource region; or The start symbol of the first downlink data time domain resource is separated from the end symbol of the control channel resource in the first time-frequency resource region by at least one symbol. 6. The method according to claim 1, wherein the scheduling unit corresponds to one or more subframes, time slots or micro-time slots in the time domain. 7. The method according to claim 1, wherein the indication information includes information on control channel resources in the first time-frequency resource region; The method further includes: the terminal device determining the start symbol of the first downlink data time domain resource based on the information of the control channel resource. 8. The method according to claim 1, wherein the first time-frequency resource region includes a self-contained scheduling unit, and the self-contained scheduling unit includes a downlink transmission period, an uplink/downlink switching period, and an uplink transmission period. 9. The method according to claim 8, wherein the indication information includes information on the uplink/downlink handover period in the self-contained scheduling unit; The method further includes: The terminal device determines the end symbol of the first downlink data time domain resource based on the information of the uplink/downlink switching period. 10. The method according to claim 1, wherein the terminal device receives indication information sent by the network device, comprising: The terminal device receives higher-layer signaling sent by the network device, the higher-layer signaling carrying the indication information; or The terminal device receives a physical layer common signal sent by the network device, the physical layer common signal carrying the indication information; or The terminal device receives a terminal-specific control signal sent by the network device, and the terminal-specific control signal carries the indication information. 11. The method according to claim 1, wherein the first downlink data time-domain resource includes a plurality of microtime slots, and the indication information is used to indicate the total length of the plurality of microtime slots. 12. The method according to claim 1, wherein the indication information includes information on the third downlink scheduling time domain resources in the third time-frequency resource region, wherein the third time-frequency resource region is the time-frequency resource region with the minimum subcarrier spacing among the plurality of time-frequency resource regions; The method further includes: The terminal device determines the end time of the third downlink data time domain resource according to the instruction information; The terminal device determines the time corresponding to the end symbol of the first downlink data time domain resource as the end time of the third downlink data time domain resource. 13. A data transmission method, characterized in that it includes: The terminal device receives indication information sent by the network device. This indication information is used to indicate a first uplink scheduling time-domain resource in a first scheduling unit for transmitting uplink data. The first time-frequency resource region corresponds to one scheduling unit in the time domain. The time-domain position of the first uplink scheduling time-domain resource in the first scheduling unit is different from the time-domain position of a second uplink scheduling time-domain resource in the second scheduling unit. The second uplink scheduling time-domain resource is the time-domain resource in the second scheduling unit used for transmitting uplink data. The network device configures multiple time-frequency resource regions for the terminal device, including the first time-frequency resource region. These multiple time-frequency resource regions have different subcarrier spacings. The multiple time-frequency resource regions correspond to different frequency bands within the same time-frequency resource. The terminal device sends data to the network device on the first uplink scheduling time domain resource according to the instruction information. 14. The method according to claim 13, wherein the indication information is used to indicate at least one of the start symbol, time domain length, and end symbol of the first uplink scheduling time domain resource. 15. The method according to claim 13 or 14, wherein the first uplink scheduling time domain resource is different from the second uplink scheduling time domain resource, comprising: The start symbol of the first uplink scheduling time-domain resource is different from the start symbol of the second uplink scheduling time-domain resource; and/or The time domain length of the first uplink scheduling time domain resource is different from the time domain length of the second uplink scheduling time domain resource. 16. The method according to claim 13, wherein the first scheduling unit is specifically a self-contained scheduling unit, the self-contained scheduling unit including a downlink transmission period, an uplink/downlink switching period, and an uplink transmission period. 17. The method according to claim 13, wherein the start symbol of the first uplink scheduling time-domain resource is the start symbol of the short format control channel, and the end symbol of the first uplink scheduling time-domain resource is the end symbol of the short format control channel. 18. The method according to claim 13, wherein the starting symbol of the first uplink scheduling time domain resource is the first symbol after the uplink/downlink switching period, and the ending symbol of the first uplink scheduling time domain resource is the previous symbol of the short format control channel. 19. The method according to claim 13, wherein the starting symbol of the first uplink scheduling time domain resource is the first symbol after the uplink/downlink switching period, and the ending symbol of the first uplink scheduling time domain resource is the ending symbol of the short format control channel. 20. The method according to claim 13, wherein the terminal device receiving the indication information sent by the network device includes: The terminal device receives higher-layer signaling sent by the network device, wherein the higher-layer signaling or physical layer common signal carries the indication information; or The terminal device receives a physical layer common signal sent by the network device, the physical layer common signal carrying the indication information; or The terminal device receives a terminal-specific control signal sent by the network device, and the terminal-specific control signal carries the indication information. 21. The method according to claim 13, wherein the first uplink scheduling time-domain resource includes a plurality of micro-time slots, and the indication information is used to indicate the total length of the plurality of micro-time slots. 22. The method according to claim 13, wherein the indication information includes information on the third uplink scheduling time domain resources in the third time-frequency resource region, wherein the third time-frequency resource region is the time-frequency resource region with the minimum subcarrier spacing among the plurality of time-frequency resource regions; The method further includes: The terminal device determines the end time of the third uplink data time domain resource according to the instruction information; The terminal device determines the time corresponding to the end symbol of the first uplink data time domain resource as the end time of the third uplink data time domain resource. 23. The method according to claim 13, wherein the scheduling unit corresponds to one or more subframes, time slots or micro-time slots in the time domain. 24. A data transmission method, characterized in that it includes: The network device determines a first downlink scheduling time-domain resource in a first time-frequency resource region, wherein the first time-frequency resource region corresponds to a scheduling unit in the time domain, and the frequency-domain resources included in the first time-frequency resource region are a portion of the system bandwidth; the network device configures multiple time-frequency resource regions for the terminal device, including the first time-frequency resource region, the multiple time-frequency resource regions having different subcarrier spacings; the multiple time-frequency resource regions correspond to different frequency bands within the same time-frequency resource. The network device sends an indication message to the terminal device, the indication message being used to indicate the first downlink scheduling time domain resource. 25. The method according to claim 24, wherein the indication information is used to indicate at least one of the start symbol, time domain length, and end symbol of the first downlink data time domain resource. 26. The method according to claim 24 or 25, wherein the first downlink scheduling time domain resource is different from the second downlink scheduling time domain resource in the second time-frequency resource region, wherein the first time-frequency resource region and the second time-frequency resource region correspond to the same time domain resource and different frequency domain resources. 27. The method according to claim 26, wherein the first downlink scheduling time-domain resource is different from the second downlink scheduling time-domain resource in the second time-frequency resource region, comprising: The start symbol of the first downlink scheduling time-domain resource is different from the start symbol of the second downlink scheduling time-domain resource; and/or The time domain length of the first downlink scheduling time domain resource is different from the time domain length of the second downlink scheduling time domain resource. 28. The method according to claim 24, wherein the start symbol of the first downlink data time-domain resource is immediately adjacent to the end symbol of the control channel resource in the first time-frequency resource region; or The start symbol of the first downlink data time domain resource is separated from the end symbol of the control channel resource in the first time-frequency resource region by at least one symbol. 29. The method according to claim 24, wherein the indication information includes information on control channel resources in the first time-frequency resource region. 30. The method according to claim 24, wherein the first time-frequency resource region includes a self-contained scheduling unit, and the self-contained scheduling unit includes a downlink transmission period, an uplink/downlink switching period, and an uplink transmission period; The indication information includes information about the uplink/downlink handover period in the self-contained scheduling unit. 31. The method according to claim 24, wherein the network device sends indication information to the terminal device, comprising: The network device sends higher-layer signaling, the higher-layer signaling carrying the indication information; or The network device sends a physical layer common signal, which carries the indication information; or The network device sends a terminal-specific control signal to the terminal device, and the terminal-specific control signal carries the indication information. 32. The method according to claim 24, wherein the first downlink data time-domain resource includes a plurality of microtime slots, and the indication information is used to indicate the total length of the plurality of microtime slots. 33. The method according to claim 24, wherein the network device determines the first downlink scheduling time domain resource in the first time-frequency resource region, comprising: The network device uses the end time of the third downlink time domain resource in the third time-frequency resource region as the end time of the first downlink scheduling time domain resource, wherein the third time-frequency resource region is the time-frequency resource region with the smallest subcarrier spacing among the plurality of time-frequency resource regions; The indication information includes information about the third downlink scheduling time domain resources. 34. A data transmission method, characterized in that it includes: The network device determines a first uplink scheduling time-domain resource in a first scheduling unit for transmitting uplink data. This first time-frequency resource region corresponds to one scheduling unit in the time domain. The time-domain position of the first uplink scheduling time-domain resource in the first scheduling unit differs from the time-domain position of a second uplink scheduling time-domain resource in the second scheduling unit. The second uplink scheduling time-domain resource is the time-domain resource in the second scheduling unit used for transmitting uplink data. The network device configures multiple time-frequency resource regions for the terminal device, including the first time-frequency resource region. These multiple time-frequency resource regions have different subcarrier spacings. The multiple time-frequency resource regions correspond to different frequency bands within the same time-frequency resource. The network device sends an indication message to the terminal device, the indication message being used to indicate the first uplink scheduling time domain resource in the first scheduling unit. 35. The method according to claim 34, wherein the indication information is used to indicate at least one of the start symbol, time domain length, and end symbol of the first uplink scheduling time domain resource. 36. The method according to claim 34 or 35, characterized in that the time-domain resources used for transmitting uplink data in the first scheduling unit are different from the time-domain resources used for transmitting uplink data in the second scheduling unit, including: The start symbol of the first uplink scheduling time-domain resource is different from the start symbol of the second uplink scheduling time-domain resource; and/or The time domain length of the first uplink scheduling time domain resource is different from the time domain length of the second uplink scheduling time domain resource. 37. The method according to claim 34, wherein the first scheduling unit is specifically a self-contained scheduling unit, the self-contained scheduling unit including a downlink transmission period, an uplink/downlink switching period, and an uplink transmission period. 38. The method according to claim 34, wherein the start symbol of the first uplink scheduling time-domain resource is the start symbol of the short format control channel, and the end symbol of the first uplink scheduling time-domain resource is the end symbol of the short format control channel. 39. The method according to claim 34, wherein the starting symbol of the first uplink scheduling time domain resource is the first symbol after the uplink/downlink switching period, and the ending symbol of the first uplink scheduling time domain resource is the previous symbol of the short format control channel. 40. The method according to claim 34, wherein the starting symbol of the first uplink scheduling time domain resource is the first symbol after the uplink/downlink switching period, and the ending symbol of the first uplink scheduling time domain resource is the ending symbol of the short format control channel. 41. The method according to claim 34, wherein the network device sends indication information to the terminal device, comprising: The network device sends higher-layer signaling, the higher-layer signaling carrying the indication information; or The network device sends a physical layer common signal, which carries the indication information; or The network device sends a terminal-specific control signal to the terminal device, and the terminal-specific control signal carries the indication information. 42. The method according to claim 34, wherein the first uplink scheduling time domain resource includes a plurality of microtime slots, and the indication information is used to indicate the total length of the plurality of microtime slots. 43. The method according to claim 34, wherein the network device determines the first uplink scheduling time domain resource in the first scheduling unit for transmitting uplink data, comprising: The network device takes the end time of the third uplink time domain resource in the third time-frequency resource region as the end time of the first uplink scheduling time domain resource, wherein the third time-frequency resource region is the time-frequency resource region with the smallest subcarrier interval among the plurality of time-frequency resource regions; The indication information includes information about the third uplink scheduling time domain resources. 44. A data transmission device, characterized in that it comprises: A receiving unit is configured to receive indication information sent by a network device. The indication information indicates a first downlink scheduling time-domain resource in a first time-frequency resource region. The first time-frequency resource region corresponds to a scheduling unit in the time domain, and the frequency-domain resources included in the first time-frequency resource region are a portion of the system bandwidth. The network device configures multiple time-frequency resource regions for the terminal device, including the first time-frequency resource region. These multiple time-frequency resource regions have different subcarrier spacings. The multiple time-frequency resource regions correspond to different frequency bands within the same time-frequency resource. The determining unit is configured to determine the first downlink scheduling time domain resource based on the indication information received by the receiving unit; The receiving unit is also used to receive data sent by the network device on the first downlink data time domain resource determined by the determining unit. 45. The apparatus according to claim 44, wherein the indication information is used to indicate at least one of the start symbol, time domain length, and end symbol of the first downlink data time domain resource. 46. The apparatus according to claim 44 or 45, wherein the first downlink scheduling time-domain resource is different from the second downlink scheduling time-domain resource in the second time-frequency resource region, wherein the first time-frequency resource region and the second time-frequency resource region correspond to the same time-domain resource and different frequency-domain resources. 47. The apparatus according to claim 46, wherein the first downlink scheduling time-domain resource is different from the second downlink scheduling time-domain resource in the second time-frequency resource region, comprising: The start symbol of the first downlink scheduling time-domain resource is different from the start symbol of the second downlink scheduling time-domain resource; and/or The time domain length of the first downlink scheduling time domain resource is different from the time domain length of the second downlink scheduling time domain resource. 48. The apparatus according to claim 44, wherein the start symbol of the first downlink data time-domain resource immediately follows the end symbol of the control channel resource in the first time-frequency resource region; or The start symbol of the first downlink data time domain resource is separated from the end symbol of the control channel resource in the first time-frequency resource region by at least one symbol. 49. The apparatus according to claim 44, wherein the scheduling unit corresponds to one or more subframes, time slots or micro-time slots in the time domain. 50. The apparatus according to claim 44, wherein the indication information includes information on control channel resources in the first time-frequency resource region; The determining unit is specifically used to determine the starting symbol of the first downlink data time domain resource based on the information of the control channel resource. 51. The apparatus according to claim 44, wherein the first time-frequency resource region includes a self-contained scheduling unit, and the self-contained scheduling unit includes a downlink transmission period, an uplink/downlink switching period, and an uplink transmission period. 52. The apparatus according to claim 51, wherein the indication information includes information on the uplink/downlink switching time period in the self-contained scheduling unit; The determining unit is specifically used to determine the end symbol of the first downlink data time domain resource based on the information of the uplink/downlink switching period. 53. The apparatus according to claim 44, wherein the receiving unit is specifically configured to receive higher-layer signaling sent by a network device, the higher-layer signaling or physical layer common signal carrying the indication information; or The receiving unit is specifically used to receive physical layer common signals sent by network devices, the physical layer common signals carrying the indication information; or The receiving unit is specifically used to receive terminal-specific control signals sent by network devices, and the terminal-specific control signals carry the indication information. 54. The apparatus according to claim 44, wherein the first downlink data time-domain resource includes a plurality of microtime slots, and the indication information is used to indicate the total length of the plurality of microtime slots. 55. The apparatus according to claim 44, wherein the indication information includes information on a third downlink scheduling time-domain resource in a third time-frequency resource region, wherein the third time-frequency resource region is the time-frequency resource region with the minimum subcarrier spacing among the plurality of time-frequency resource regions; The determining unit is specifically used to determine the end time of the third downlink data time domain resource according to the indication information, and to determine the time corresponding to the end symbol of the first downlink data time domain resource as the end time of the third downlink data time domain resource. 56. A data transmission apparatus, characterized in that it comprises: A receiving unit is configured to receive indication information sent by a network device. The indication information indicates a first uplink scheduling time-domain resource in a first scheduling unit used for transmitting uplink data. The first time-frequency resource region corresponds to a scheduling unit in the time domain. The time-domain position of the first uplink scheduling time-domain resource in the first scheduling unit differs from the time-domain position of a second uplink scheduling time-domain resource in the second scheduling unit. The second uplink scheduling time-domain resource is the time-domain resource in the second scheduling unit used for transmitting uplink data. The network device configures multiple time-frequency resource regions for the terminal device, including the first time-frequency resource region. These multiple time-frequency resource regions have different subcarrier spacings. The multiple time-frequency resource regions correspond to different frequency bands within the same time-frequency resource. The determining unit is configured to determine the first uplink scheduling time domain resource based on the indication information received by the receiving unit; The sending unit is configured to send data to the network device on the first uplink scheduling time domain resource determined by the determining unit. 57. The apparatus according to claim 56, wherein the indication information is used to indicate at least one of the start symbol, time domain length, and end symbol of the first uplink scheduling time domain resource. 58. The apparatus according to claim 56 or 57, wherein the first uplink scheduling time-domain resource is different from the second uplink scheduling time-domain resource, comprising: The start symbol of the first uplink scheduling time-domain resource is different from the start symbol of the second uplink scheduling time-domain resource; and/or The time domain length of the first uplink scheduling time domain resource is different from the time domain length of the second uplink scheduling time domain resource. 59. The apparatus according to claim 56, wherein the first scheduling unit is specifically a self-contained scheduling unit, the self-contained scheduling unit comprising a downlink transmission period, an uplink/downlink switching period, and an uplink transmission period. 60. The apparatus according to claim 56, wherein the start symbol of the first uplink scheduling time-domain resource is the start symbol of the short format control channel, and the end symbol of the first uplink scheduling time-domain resource is the end symbol of the short format control channel. 61. The apparatus according to claim 56, wherein the starting symbol of the first uplink scheduling time domain resource is the first symbol after the uplink/downlink switching period, and the ending symbol of the first uplink scheduling time domain resource is the previous symbol of the short format control channel. 62. The apparatus according to claim 56, wherein the starting symbol of the first uplink scheduling time domain resource is the first symbol after the uplink/downlink switching period, and the ending symbol of the first uplink scheduling time domain resource is the ending symbol of the short format control channel. 63. The apparatus according to claim 56, wherein the receiving unit is specifically configured to receive higher-layer signaling sent by a network device, wherein the higher-layer signaling or physical layer common signal carries the indication information; or The receiving unit is specifically used to receive physical layer common signals sent by network devices, the physical layer common signals carrying the indication information; or The receiving unit is specifically used to receive terminal-specific control signals sent by network devices, and the terminal-specific control signals carry the indication information. 64. The apparatus according to claim 56, wherein the first uplink scheduling time-domain resource includes a plurality of micro-time slots, and the indication information is used to indicate the total length of the plurality of micro-time slots. 65. The apparatus according to claim 56, wherein if the network device configures a plurality of time-frequency resource regions within the first scheduling unit for a terminal device, wherein the plurality of time-frequency resource regions have different subcarrier intervals, then the indication information includes information on a third uplink scheduling time domain resource in a third time-frequency resource region, wherein the third time-frequency resource region is the time-frequency resource region with the smallest subcarrier interval among the plurality of time-frequency resource regions; The determining unit is specifically used to determine the end time of the third uplink data time domain resource according to the indication information, and to determine the time corresponding to the end symbol of the first uplink data time domain resource as the end time of the third uplink data time domain resource. 66. The apparatus according to claim 56, wherein the scheduling unit corresponds to one or more subframes, time slots or micro-time slots in the time domain. 67. A data transmission apparatus, characterized in that it comprises: A determining unit is configured to determine a first downlink scheduling time-domain resource in a first time-frequency resource region, wherein the first time-frequency resource region corresponds to a scheduling unit in the time domain, and the frequency-domain resources included in the first time-frequency resource region are a portion of the system bandwidth; the network device configures multiple time-frequency resource regions for the terminal device, including the first time-frequency resource region, the multiple time-frequency resource regions having different subcarrier spacings; the multiple time-frequency resource regions correspond to different frequency bands within the same time-frequency resource. The sending unit is used to send indication information to the terminal device, the indication information being used to indicate the first downlink scheduling time domain resource determined by the determining unit. 68. The apparatus according to claim 67, wherein the indication information is used to indicate at least one of the start symbol, time domain length, and end symbol of the first downlink data time domain resource. 69. The apparatus according to claim 67 or 68, wherein the first downlink scheduling time-domain resource is different from the second downlink scheduling time-domain resource in the second time-frequency resource region, wherein the first time-frequency resource region and the second time-frequency resource region correspond to the same time-domain resource and different frequency-domain resources. 70. The apparatus according to claim 69, wherein the first downlink scheduling time-domain resource is different from the second downlink scheduling time-domain resource in the second time-frequency resource region, comprising: The start symbol of the first downlink scheduling time-domain resource is different from the start symbol of the second downlink scheduling time-domain resource; and/or The time domain length of the first downlink scheduling time domain resource is different from the time domain length of the second downlink scheduling time domain resource. 71. The apparatus according to claim 67, wherein the start symbol of the first downlink data time-domain resource immediately follows the end symbol of the control channel resource in the first time-frequency resource region; or The start symbol of the first downlink data time domain resource is separated from the end symbol of the control channel resource in the first time-frequency resource region by at least one symbol. 72. The apparatus according to claim 67, wherein the indication information includes information on control channel resources in the first time-frequency resource region. 73. The apparatus according to claim 67, wherein the first time-frequency resource region includes a self-contained scheduling unit, and the self-contained scheduling unit includes a downlink transmission period, an uplink/downlink switching period, and an uplink transmission period; The indication information includes information about the uplink/downlink handover period in the self-contained scheduling unit. 74. The apparatus according to claim 67, wherein the transmitting unit is specifically configured to transmit higher-layer signaling, the higher-layer signaling carrying the indication information; or The transmitting unit is specifically used to transmit a physical layer common signal, which carries the indication information; or The sending unit is specifically used to send a terminal-specific control signal to the terminal device, and the terminal-specific control signal carries the indication information. 75. The apparatus according to claim 67, wherein the first downlink data time-domain resource includes a plurality of microtime slots, and the indication information is used to indicate the total length of the plurality of microtime slots. 76. The apparatus according to claim 67, wherein the determining unit is specifically configured to: take the end time of the third downlink time-domain resource in the third time-frequency resource region as the end time of the first downlink scheduling time-domain resource, wherein the third time-frequency resource region is the time-frequency resource region with the smallest subcarrier spacing among the plurality of time-frequency resource regions; The indication information includes information about the third downlink scheduling time domain resources. 77. A data transmission apparatus, characterized in that it comprises: A determining unit is configured to determine a first uplink scheduling time-domain resource in a first scheduling unit for transmitting uplink data. The first time-frequency resource region corresponds to one scheduling unit in the time domain. The position of the first uplink scheduling time-domain resource in the first scheduling unit differs from the position of a second uplink scheduling time-domain resource in the second scheduling unit. The second uplink scheduling time-domain resource is the time-domain resource in the second scheduling unit used for transmitting uplink data. The network device configures multiple time-frequency resource regions for the terminal device, including the first time-frequency resource region. These multiple time-frequency resource regions have different subcarrier spacings. The multiple time-frequency resource regions correspond to different frequency bands within the same time-frequency resource. The sending unit is used to send indication information to the terminal device, the indication information being used to indicate the first uplink scheduling time domain resource in the first scheduling unit determined by the determining unit. 78. The apparatus according to claim 77, wherein the indication information is used to indicate at least one of the start symbol, time domain length, and end symbol of the first uplink scheduling time domain resource. 79. The apparatus according to claim 77 or 78, characterized in that the time-domain resources for transmitting uplink data in the first scheduling unit are different from the time-domain resources for transmitting uplink data in the second scheduling unit, including: The start symbol of the first uplink scheduling time-domain resource is different from the start symbol of the second uplink scheduling time-domain resource; and/or The time domain length of the first uplink scheduling time domain resource is different from the time domain length of the second uplink scheduling time domain resource. 80. The apparatus according to claim 77, wherein the first scheduling unit is specifically a self-contained scheduling unit, the self-contained scheduling unit comprising a downlink transmission period, an uplink/downlink switching period, and an uplink transmission period. 81. The apparatus according to claim 77, wherein the start symbol of the first uplink scheduling time-domain resource is the start symbol of the short format control channel, and the end symbol of the first uplink scheduling time-domain resource is the end symbol of the short format control channel. 82. The apparatus according to claim 77, wherein the starting symbol of the first uplink scheduling time domain resource is the first symbol after the uplink/downlink handover period, and the ending symbol of the first uplink scheduling time domain resource is the previous symbol of the short format control channel. 83. The apparatus according to claim 77, wherein the starting symbol of the first uplink scheduling time domain resource is the first symbol after the uplink/downlink switching period, and the ending symbol of the first uplink scheduling time domain resource is the ending symbol of the short format control channel. 84. The apparatus according to claim 77, wherein the transmitting unit is specifically configured to transmit higher-layer signaling, the higher-layer signaling carrying the indication information; or The transmitting unit is specifically used to transmit a physical layer common signal, which carries the indication information; or The sending unit is specifically used to send a terminal-specific control signal to the terminal device, and the terminal-specific control signal carries the indication information. 85. The apparatus according to claim 77, wherein the first uplink scheduling time-domain resource includes a plurality of microtime slots, and the indication information is used to indicate the total length of the plurality of microtime slots. 86. The apparatus according to claim 77, wherein the determining unit is specifically used for: If the network device configures multiple time-frequency resource regions within the first scheduling unit for the terminal device, wherein the multiple time-frequency resource regions have different subcarrier intervals, the end time of the third uplink time domain resource in the third time-frequency resource region is taken as the end time of the first uplink scheduling time domain resource, wherein the third time-frequency resource region is the time-frequency resource region with the smallest subcarrier interval among the multiple time-frequency resource regions; The indication information includes information about the third uplink scheduling time domain resources.