WO2019128949A1

WO2019128949A1 - Method and device for transmitting data transmission format

Info

Publication number: WO2019128949A1
Application number: PCT/CN2018/123286
Authority: WO
Inventors: 郑娟; 官磊; 马莎
Original assignee: 华为技术有限公司
Priority date: 2017-12-29
Filing date: 2018-12-25
Publication date: 2019-07-04
Also published as: CN109995462A; CN109995462B

Abstract

Embodiments of the present application provide a method and device for transmitting a data transmission format, relating to the field of communications. The method comprises: a terminal device determining a first system parameter or a second system parameter used by the terminal device and an access network device for data transmission; the terminal device receiving first indication information sent by the access network device, the first indication information being used to indicate a number of time units for sending and/or receiving data by the access network device; and the terminal device determining the number of time units according to the first indication information. The method provided by the embodiments of the present application can provide an effective data transmission format indication method for data transmission with respect to different system parameters.

Description

Method and device for transmitting data transmission format

This application claims the priority of the Chinese Patent Application filed on Dec. 29, 2017, the Chinese National Intellectual Property Office, the application number is 201711483895.9, and the application name is "a transmission method and device for a data transmission format", the entire contents of which are incorporated by reference. Combined in this application.

Technical field

The embodiments of the present application relate to the field of communications, and more specifically, to a method and apparatus for transmitting a data transmission format.

Background technique

In a wireless communication network, each device needs to use frequency resources for information transmission, and the frequency resources are also referred to as spectrum or frequency bands. The frequency band can be divided into a licensed frequency band and an unlicensed frequency band, and the unlicensed frequency band is also called an unlicensed frequency band. The licensed band is a frequency resource exclusive to some operators. The unlicensed band is a common frequency resource in a wireless communication network and can be used free of charge. Different devices can share frequency resources on the unlicensed band. With the development of communication technology, the amount of information transmitted in the wireless communication network is increasing, and the use of the unlicensed band to transmit information can improve the data throughput in the wireless communication network and better meet the needs of users.

However, when the device preempts the unlicensed band for information transmission, since the information transmission on the unlicensed band is opportunistic, it is necessary to dynamically determine the data transmission format. On the other hand, information transmission over the unlicensed band can be adapted to different service types using a variety of different system parameters. Therefore, how to design an effective data transmission format indication method for different system parameters is a problem to be solved by the present application.

Summary of the invention

The embodiment of the present application provides a method and an apparatus for transmitting a data transmission format.

In a first aspect, a method for transmitting a data transmission format includes: determining, by a terminal device, a first system parameter or a second system parameter used by the terminal device and the access network device for data transmission; Receiving, by the terminal device, the first indication information that is sent by the access network device, where the first indication information is used to indicate a number of time units for sending and/or receiving data by the access network device; Determining, by the first indication information, the number of the time units; wherein, when the terminal device determines that the terminal device and the access network device use the first system parameter when performing data transmission, the time unit The number is an element included in the first set; or, when the terminal device determines that the second system parameter is used when the terminal device and the access network device perform data transmission, the number of the time units is An element included in the two sets; wherein the first set corresponds to the first system parameter, and the second set corresponds to the second system parameter; At least one M value is included in a set, the M is greater than N, the N is a maximum value in the second set, and a subcarrier spacing corresponding to the second system parameter is smaller than a corresponding one of the first system parameters. Subcarrier spacing. With the method provided by the embodiment of the present application, the access network device can use the first indication information to indicate the sending and/or receiving data, regardless of the system parameters used for data transmission between the access network device and the terminal device. The number of time units, which simplifies the indication of data transmission formats (such as SFI).

In a possible implementation manner, the first set includes a set {a ₁ , a ₂ , . . . , a _w }, and the second set includes a set {b ₁ , b ₂ , . . . , b _w },

The value is an integer multiple of K, where a _i , b _i , w are positive integers, i is a natural number greater than 0 and less than or equal to w; or at least one value in the first set is related to the second set The ratio between the at least one of the values is an integer multiple of K; wherein K is a ratio between a subcarrier spacing corresponding to the first system parameter and a subcarrier spacing corresponding to the second system parameter. With the method provided by the embodiment of the present application, no matter what system parameter is used for data transmission between the access network device and the terminal device, the data transmission duration corresponding to the multiple time units indicated by the first indication information is in different system parameters. In the case of similar results, this is especially true for data transmission format indications on unlicensed band resources.

In a possible implementation, when the terminal device determines that the terminal device and the access network device use the first system parameter when performing data transmission, the terminal device is configured according to the first indication information. Determining, by the first system parameter and the second system parameter, the number of time units; or determining, by the terminal device, the number of the time units according to the first indication information and the second system parameter The length of the transmission.

In a possible implementation, the first indication information is further used to indicate a starting position of the number of time units; when the terminal device determines that the terminal device and the access network device perform data transmission When the first system parameter is used, the terminal device determines the time according to the first indication information and the first system parameter, or according to the first indication information and the second system parameter. a starting position of the number of units; or, when the terminal device determines that the terminal device and the access network device use the second system parameter when performing data transmission, the terminal device according to the first indication The information and the second system parameter determine a starting position of the number of time units.

In a possible implementation manner, the terminal device receives second indication information that is sent by the access network device, where the second indication information is used to indicate a starting position of the number of time units; When the terminal device determines that the first system parameter is used when the terminal device and the access network device perform data transmission, the terminal device determines the time according to the second indication information and the first system parameter. The start position of the unit; or, when the terminal device determines that the terminal device and the access network device use the second system parameter for data transmission, the terminal device according to the second indication information and The second system parameter determines a starting position of the time unit.

Optionally, the first indication information and the second indication information are carried in the same downlink control channel.

Optionally, the first indication information is carried in a downlink common control channel.

In a possible implementation manner, the first system parameter includes a subcarrier spacing SCS and/or a time unit duration; and the second system parameter includes a subcarrier spacing SCS and/or a time unit duration.

In a possible implementation, the first indication information is used to indicate the number of time units in which the access network device sends and/or receives data, and the first indication information is used to indicate the The number of time units in which the network access device transmits and/or receives data within a preset time range, wherein the duration of the preset time range is not greater than the duration of the single data transmission limited by the regulatory band on the unlicensed band resource. . Therefore, the terminal device may not perform downlink detection during the uplink data transmission period that is not scheduled, thereby achieving the power saving effect.

In a second aspect, an embodiment of the present application provides a data transmission format transmission method, including: determining, by an access network device, a number of time units for transmitting and/or receiving data; and the access network device sending the first to a terminal device Instructing information, the first indication information is used to indicate a number of time units in which the access network device sends and/or receives data; wherein, when the terminal device and the access network device perform data transmission, When the first system parameter is the first system parameter, the number of time units is an element included in the first set; or, when the terminal device and the access network device perform data transmission, when the second system parameter is used, The number of time units is an element included in the second set; wherein the first set corresponds to the first system parameter, and the second set corresponds to the second system parameter; the first The set includes at least one M value, the M is greater than N, the N is a maximum value in the second set, and the subcarrier spacing corresponding to the second system parameter is smaller than the sub corresponding to the first system parameter. Wave interval. With the method provided by the embodiment of the present application, the indication of the data transmission format can also achieve that the data transmission duration corresponding to the indicated time unit is comparable regardless of which system parameter is adopted, thereby simplifying the data transmission format indication on the unlicensed band resource. Method design.

The value is an integer multiple of K, where a _i , b _i , w are positive integers, i is a natural number greater than 0 and less than or equal to w; or at least one value in the first set is related to the second set The ratio between the at least one of the values is an integer multiple of K; wherein K is a ratio between a subcarrier spacing corresponding to the first system parameter and a subcarrier spacing corresponding to the second system parameter.

Optionally, the first indication information is further used to indicate a starting position of the number of time units.

In a possible implementation manner, the access network device sends second indication information to the terminal device, where the second indication information is used to indicate a starting position of the number of time units.

In a possible implementation manner, the first indication information is carried in a downlink common control channel.

In a possible implementation, the first indication information is used to indicate the number of time units in which the access network device sends and/or receives data, and the first indication information is used to indicate the The number of time units in which the network access device transmits and/or receives data within a preset time range, wherein the duration of the preset time range is not greater than the duration of the single data transmission limited by the regulatory band on the unlicensed band resource. .

In a third aspect, the embodiment of the present application provides a terminal device for performing the method of the first aspect. In particular, the terminal device comprises means for performing the method of the first aspect or any one of the implementations of the first aspect.

In a fourth aspect, an embodiment of the present application provides an access network device, where the method of the second aspect is performed. Specifically, the access network device includes means for performing the method in any one of the second aspect or the second aspect.

In a fifth aspect, the embodiment of the present application provides a data transmission format transmission method, including: determining, by a terminal device, a first system parameter or a second system parameter used by the terminal device and an access network device to perform data transmission; The terminal device receives the indication information sent by the access network device, where the indication information is used to indicate a starting position of the number of time units of the access network device to send and/or receive data; the terminal device according to the indication Determining a starting position of the number of time units; wherein, when the terminal device determines that the terminal device and the access network device use the first system parameter when performing data transmission, the terminal device Determining a starting position of the number of time units according to the indication information and the first system parameter, or according to the indication information and the second system parameter; or when the terminal device determines the terminal When the device and the access network device use the second system parameter when performing data transmission, the terminal device according to the indication information and the second system Parameters determining the starting position of the number of time units.

In a possible implementation, when the terminal device determines that the terminal device and the access network device use the first system parameter when performing data transmission, the number of the time units is in the first set. The included element; or, when the terminal device determines that the terminal device and the access network device use the second system parameter for data transmission, the number of time units is an element included in the second set Wherein the first set corresponds to the first system parameter, the second set corresponds to the second system parameter, the first set includes at least one M value, and the M is greater than N The N is a maximum value in the second set, and the subcarrier spacing corresponding to the second system parameter is smaller than the subcarrier spacing corresponding to the first system parameter.

In a possible implementation manner, the first system parameter includes a subcarrier spacing SCS and/or a slot duration; and the second system parameter includes a subcarrier spacing SCS and/or a slot duration.

In a possible implementation, the indication information is used to indicate a starting position of the number of time units in which the access network device sends and/or receives data within a preset time range, where the preset time is The duration of the range corresponds to no more than a single data transmission duration subject to regulatory restrictions on the unlicensed band resources.

Optionally, the indication information is further used to indicate the number of time units in which the access network device sends and/or receives data.

In a sixth aspect, the embodiment of the present application provides a data transmission format transmission method, including: determining, by an access network device, a starting position of a number of time units for transmitting and/or receiving data; and the access network device to the terminal device Sending indication information, the indication information is used to indicate a starting position of the number of time units of the access network device to send and/or receive data.

In a possible implementation manner, when the first system parameter is used when the terminal device and the access network device perform data transmission, the number of time units is an element included in the first set; or When the second system parameter is used when the terminal device and the access network device perform data transmission, the number of time units is an element included in the second set; wherein the first set and the first Corresponding to a system parameter, the second set corresponds to the second system parameter, the first set includes at least one M value, the M is greater than N, and the N is in the second set The maximum value, and the subcarrier spacing corresponding to the second system parameter is smaller than the subcarrier spacing corresponding to the first system parameter.

Optionally, the indication information is carried in a downlink common control channel.

In a seventh aspect, the embodiment of the present application provides a terminal device for performing the method of the fifth aspect. Specifically, the terminal device includes means for performing the method in any one of the fifth aspect or the fifth aspect.

In an eighth aspect, an embodiment of the present application provides an access network device, where the method of the sixth aspect is performed. Specifically, the access network device includes means for performing the method in any one of the sixth aspect or the sixth aspect.

In a ninth aspect, the present application provides a computer storage medium on which a computer program (instruction) is stored, and when the program (instruction) is run on a computer, the computer is caused to perform the first aspect, the second aspect, and the fifth aspect. Or the method described in the sixth aspect.

In a tenth aspect, the present application provides a chip system including a processor for supporting an access network device and a terminal device to implement the functions involved in the foregoing aspects, such as, for example, generating or processing the method involved in the foregoing method. Data and / or information. In a possible design, the chip system further comprises a memory for storing the necessary program instructions and data of the access network device and the terminal device. The chip system can be composed of chips, and can also include chips and other discrete devices.

In an eleventh aspect, the application provides a communication device including a processor and a memory; the memory is configured to store a computer execution instruction; the processor is configured to execute a computer execution instruction stored by the memory to enable the communication The apparatus performs the method of the first aspect, the second aspect, the fifth aspect, or the sixth aspect.

According to a twelfth aspect, the present application provides a communication system, comprising the terminal device according to the above third aspect and the access network device of the fourth aspect.

In a thirteenth aspect, the present application provides a communication system, comprising the terminal device according to the seventh aspect and the access network device of the eighth aspect.

In summary, when the data transmission between the access network device and the terminal device uses different system parameters, the transmission duration corresponding to multiple time units that are comparable or identical may be used to implement an effective data transmission format. Indicates and simplifies the design of the data transfer format indication.

DRAWINGS

FIG. 1 is a schematic structural diagram of a wireless communication system according to an embodiment of the present application;

FIG. 2 is a schematic structural diagram of an access network device according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure;

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

FIG. 5 is a schematic diagram of different SCSs and corresponding time slot durations according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of a frame according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of another frame provided by an embodiment of the present application;

FIG. 8 is a schematic diagram of indicating a transmission duration according to an embodiment of the present application;

FIG. 9 is a schematic diagram of another indication transmission duration provided by an embodiment of the present application;

FIG. 10 is a schematic diagram of another indication transmission duration provided by an embodiment of the present application; FIG.

FIG. 11 is a schematic flowchart of another data transmission method according to an embodiment of the present application;

FIG. 12 is a schematic diagram of the number of time units indicating that the access network device receives data by using the first indication information according to an embodiment of the present disclosure;

FIG. 13 is a schematic diagram of another time unit number indicating that an access network device receives data by using the first indication information according to an embodiment of the present disclosure;

FIG. 14 is a schematic diagram of another time unit number indicating that an access network device receives data by using the first indication information according to an embodiment of the present disclosure;

FIG. 15 is a schematic diagram of a different relationship between a starting position #1 and a starting position #2 according to an embodiment of the present application;

FIG. 16 is a schematic diagram of another relationship between a starting position #1 and a starting position #2 according to an embodiment of the present application;

FIG. 17 is a schematic diagram showing another relationship between the starting position #1 and the starting position #2 provided by the embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. It should be noted that, in the case of no conflict, the technical solutions or features in the various embodiments of the present application may be combined with each other.

"One" in the embodiment of the present application means a single individual, and does not mean that it can only be one individual, and cannot be applied to other individuals. For example, "a terminal device" in the embodiment of the present application refers to a certain terminal device, and does not mean that it can be applied to only one specific terminal device. In the present application, the term "system" can be used interchangeably with "network".

References to "one embodiment" (or "an implementation") or "an embodiment" (or "an implementation") in this application are meant to include the particular features, structures, features, etc. described in connection with the embodiments, in at least one embodiment. . Thus, "in one embodiment" or "in an embodiment" or "an"

Further, the terms "and/or" and "at least one" in the case of "A and/or B" and "at least one of A and B" in the embodiment of the present application include any one of three schemes, That is, a scheme including A but not including B, a scheme including B not including A, and a scheme including both options A and B. As another example, in the case of "A, B, and/or C" and "at least one of A, B, and/or C", such a phrase includes any of the six schemes, ie, includes A, but does not include the B and C schemes, including B without A and C, including C but not A and B, including A and B but not C, including B and C but not A The scheme includes the schemes of A and C but not B, and the schemes of all three options A, B and C. As will be readily understood by one of ordinary skill in the art and related art, the embodiments of the present application can be understood as described above.

Figure 1 shows a schematic diagram of communication between a wireless device and a wireless communication system. The wireless communication system may be a system that applies various radio access technologies (RATs), such as code division multiple access (CDMA), time division multiple access (TDMA), Frequency division multiple access (FDMA), orthogonal frequency-division multiple access (OFDMA), or single carrier frequency division multiple access (SC-FDMA) and other systems . For example, the wireless communication system may be a long term evolution (LTE) system, a CDMA system, a wideband code division multiple access (wideband CDMA (WCDMA) system, a global system for mobile communications (GSM) system, a wireless local area network ( Wireless local area network (WLAN) system, New Radio (NR) system, various evolved or fused systems, and systems for future-oriented communication technologies. The system architecture and the service scenario described in the embodiments of the present application are for the purpose of more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute a limitation of the technical solutions provided by the embodiments of the present application. The technical solutions provided by the embodiments of the present application are equally applicable to similar technical problems.

For simplicity, one network device 102 (e.g., an access network device) and two wireless devices 104 (e.g., terminal devices) are shown in Figure 1. In general, a wireless communication system can include any number of network devices as well as terminal devices. The wireless communication system may also include one or more core network devices or devices for carrying virtualized network functions, and the like. The access network device 102 can provide services to the wireless device over one or more carriers. In the present application, the access network device and the terminal device are collectively referred to as a wireless device.

In the present application, the access network device 102 is a device deployed in a wireless access network to provide a wireless communication function for a terminal device. The access network device may include various forms of a macro base station (BS), a micro base station (also referred to as a small station), a relay station, or an access point. In a system using different radio access technologies, the name of a device with radio access capability may be different, for example, in an LTE system, called an evolved Node B (eNB or eNodeB), In the third generation (3rd generation, 3G) system, it is called Node B (Node B). For convenience of description, for convenience of description, in the present application, it is simply referred to as an access network device, sometimes also referred to as a base station.

The wireless devices involved in the embodiments of the present application may include various handheld devices having wireless communication functions, in-vehicle devices, wearable devices, computing devices, or other processing devices connected to the wireless modem. The wireless device may be referred to as a terminal device, and may also be referred to as a mobile station (MS), a terminal, a user equipment (UE), or the like. The wireless device may be a subscriber unit, a cellular phone, a smart phone, a wireless data card, a personal digital assistant (PDA) computer, a tablet computer, a modem ( Modem) or modem processor, handheld, laptop computer, netbook, cordless phone or wireless local loop (WLL) station, Bluetooth device , machine type communication (MTC) terminal, etc. For convenience of description, in the present application, it is simply referred to as a terminal device or a UE.

The wireless device can support one or more wireless technologies for wireless communication, such as 5G, LTE, WCDMA, CDMA, 1X, Time Division-Synchronous Code Division Multiple Access (TS-SCDMA), GSM, 802.11 and more. Wireless devices can also support carrier aggregation techniques.

Multiple wireless devices can perform the same or different services. For example, mobile broadband services, Enhanced Mobile Broadband (eMBB) services, and Ultra-Reliable and Low-Latency Communication (URLLC) services.

Further, a possible schematic diagram of the foregoing access network device 102 can be as shown in FIG. 2. The access network device 102 is capable of performing the method provided by the embodiments of the present application. The access network device 102 may include a controller or a processor 201 (hereinafter, the processor 201 is taken as an example) and a transceiver 202. Controller/processor 201 is sometimes also referred to as a modem processor. Modem processor 201 can include a baseband processor (BBP) (not shown) that processes the digitized received signal to extract information or data bits conveyed in the signal. As such, the BBP is typically implemented in one or more digital signal processors (DSPs) within the modem processor 201 or as separate integrated circuits (ICs) as needed or desired.

The transceiver 202 can be used to support the transmission and reception of information between the access network device 102 and the terminal device, and to support radio communication between the terminal devices. The processor 201 can also be used to perform functions of communication between various terminal devices and other network devices. On the uplink, the uplink signal from the terminal device is received via the antenna, coordinated by the transceiver 202, and further processed by the processor 201 to recover the traffic data and/or signaling information transmitted by the terminal device. On the downlink, the traffic data and/or signaling messages are processed by the terminal device and modulated by the transceiver 202 to generate a downlink signal and transmitted to the UE via the antenna. The access network device 102 can also include a memory 203 that can be used to store program code and/or data for the access network device 102. The transceiver 202 can include separate receiver and transmitter circuits, or the same circuit can implement transceiving functions. The access network device 102 can also include a communication unit 204 for supporting the access network device 102 to communicate with other network entities. For example, it is used to support the access network device 102 to communicate with a network device or the like of the core network.

Optionally, the access network device may further include a bus. The transceiver 202, the memory 203, and the communication unit 204 can be connected to the processor 201 through a bus. For example, the bus can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus. The bus may include an address bus, a data bus, a control bus, and the like.

FIG. 3 is a schematic diagram of a possible structure of a terminal device in the above wireless communication system. The terminal device is capable of performing the method provided by the embodiment of the present application. The terminal device can be any of the two terminal devices 104. The terminal device includes a transceiver 301, an application processor 302, a memory 303, and a modem processor 304.

The transceiver 301 can condition (e.g., analog convert, filter, amplify, upconvert, etc.) the output samples and generate an uplink signal that is transmitted via an antenna to the base station described in the above embodiments. On the downlink, the antenna receives the downlink signal transmitted by the access network device. Transceiver 301 can condition (eg, filter, amplify, downconvert, digitize, etc.) the signals received from the antenna and provide input samples.

Modem processor 304, also sometimes referred to as a controller or processor, may include a baseband processor (BBP) (not shown) that processes the digitized received signal to extract information conveyed in the signal Or data bits. The BBP is typically implemented in one or more numbers within the modem processor 304 or as a separate integrated circuit (IC), as needed or desired.

In one design, a modem processor 304 may include an encoder 3041, a modulator 3042, a decoder 3043, and a demodulator 3044. The encoder 3041 is for encoding the signal to be transmitted. For example, encoder 3041 can be used to receive traffic data and/or signaling messages to be transmitted on the uplink and to process (eg, format, encode, or interleave, etc.) the traffic data and signaling messages. Modulator 3042 is used to modulate the output signal of encoder 3041. For example, the modulator can perform symbol mapping and/or modulation processing on the encoder's output signals (data and/or signaling) and provide output samples. A demodulator 3044 is used to demodulate the input signal. For example, demodulator 3044 processes the input samples and provides symbol estimates. The decoder 3043 is configured to decode the demodulated input signal. For example, the decoder 3043 deinterleaves, and/or decodes the demodulated input signal and outputs the decoded signal (data and/or signaling). Encoder 3041, modulator 3042, demodulator 3044, and decoder 3043 may be implemented by a composite modem processor 304. These units are processed according to the radio access technology employed by the radio access network.

Modem processor 304 receives digitized data representative of voice, data or control information from application processor 302 and processes the digitized data for transmission. The associated modem processor can support one or more of a variety of wireless communication protocols of various communication systems, such as LTE, new air interface, Universal Mobile Telecommunications System (UMTS), high speed packet access (High Speed) Packet Access, HSPA) and more. Optionally, one or more memories may also be included in the modem processor 304.

Alternatively, the modem processor 304 and the application processor 302 may be integrated in one processor chip.

The memory 303 is used to store program code (sometimes referred to as programs, instructions, software, etc.) and/or data for supporting communication of the terminal device.

It should be noted that the memory 203 or the memory 303 may include one or more storage units, for example, may be a processor 201 for storing program code or a storage unit inside the modem processor 304 or the application processor 302, or may Is an external storage unit separate from the processor 201 or the modem processor 304 or the application processor 302, or may also be a storage unit including the processor 201 or the modem processor 304 or the application processor 302 and with the processor 201 or modem The processor 304 or the application processor 302 is a separate component of an external storage unit.

The processor 201 and the modem processor 301 may be the same type of processor or different types of processors. For example, it can be implemented in a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), and a field programmable gate array ( Field Programmable Gate Array (FPGA) or other programmable logic device, transistor logic device, hardware component, other integrated circuit, or any combination thereof. The processor 201 and the modem processor 301 can implement or perform various exemplary logical blocks, modules and circuits described in connection with the disclosure of the embodiments of the present application. The processor may also be a combination of computing function devices, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, or a system-on-a-chip (SOC) or the like.

Those skilled in the art can appreciate that the various illustrative logical blocks, modules, circuits, and algorithms described in connection with the aspects disclosed herein can be implemented as electronic hardware, stored in a memory, or in another computer-readable medium and An instruction executed by a processor or other processing device, or a combination of the two. By way of example, the devices described herein can be used in any circuit, hardware component, IC, or IC chip. The memory disclosed herein can be any type and size of memory and can be configured to store any type of information as desired. To clearly illustrate this interchangeability, various illustrative components, blocks, modules, circuits, and steps have been described. How such functionality is implemented depends on the specific application, design choices, and/or design constraints imposed on the overall system. A person skilled in the art can implement the described functionality in different ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the application.

In the schematic diagram of the wireless communication system shown in FIG. 1, a radio access network device, such as a base station, a wireless local area network access point, and the like, a transmission reception point (TRP), provides access to a licensed device in a licensed frequency band. Access services under service or unlicensed bands. Unlicensed bands are bands that can be used free of charge, and different devices can share resources on unlicensed bands. Operators can use the unlicensed band resources to achieve the purpose of network capacity offloading, but need to comply with the regulatory requirements of the unlicensed band resources in different geographies and different spectrums. For example, the license target frequency band is a 5 GHz unlicensed frequency band opened by governments. The coexistence specifications include transmission power control (TPC), dynamic frequency selection (DFS), channel occupied bandwidth, and after listening. Said (listen before talk, LBT) and so on. Generally speaking, the LBT is a coexistence strategy between systems. The wireless communication system needs to use the LBT rule when occupying the unlicensed band communication. The following describes the LBT rules.

Take, for example, a wireless fidelity (Wi-Fi) communication system that can currently operate in an unlicensed band. One method of competing resources for Wi-Fi communication system applications is the LBT rule. The basic idea of the LBT rule is: Before each communication device sends data on a certain channel, it needs to detect whether the current channel is idle, that is, whether it can detect that the nearby node is occupying the channel to transmit data. This detection process is called idle. Clear channel assessment (CCA). If the communication device detects that the channel is occupied, then the communication device is currently unable to transmit data on the channel. Conversely, if the channel is detected to be idle for a period of time, the communication device can transmit data, and in general, In order to maintain friendly coexistence with other communication devices, the time for transmitting data on the channel is limited, and within this limited time range, the communication device does not need to perform idle evaluation on the channel; or, at this limited time Within the scope, the communication device can also share the unlicensed band resources that are competing with other communication devices. Specifically, the other communication device having a certain relationship with the communication device can use the unlicensed band resource with high priority. Here, other communication devices having a certain relationship with the communication device can be understood as other communication devices served by the communication device. For example, if the communication device is a base station, other communication devices serving with the communication device can be understood as the base station. The terminal device of the service, or if the communication device is a terminal device, the other communication device having a certain relationship with the communication device can be understood as the serving base station of the terminal device or other service of the serving base station of the terminal device. User equipment. Secondly, here, the high priority uses the unlicensed band resource, which may include other communication devices that can use the unlicensed band resource when the unlicensed band resource is used, and does not need to idle evaluation of the channel, or if idle evaluation is needed, Listening is performed using a high-priority CCA method.

For convenience of description, in the present application, the time range of the above limitation is referred to as a maximum channel occupancy time (MCOT). The specific value of the MCOT is related to local regulations or, in addition, to the definition of the standard. For example, in the 5 GHz band, according to Japanese regulations, MCOT can be 4 ms; according to European regulations, MCOT can be 13 ms or 10 ms; according to the 3rd Generation Partner Project (3GPP) standard protocol, MCOT specific value and LBT The priority value can be 2ms, 4ms, 6ms, 8ms or 10ms; in the 60GHz band, according to European regulations, MCOT can be 9ms.

In the above process, whether the channel is idle or not can be realized by means of signal detection, energy detection, and the like. Specifically, if the detection channel is idle or not, the signal is detected, and accordingly, if a specific signal is not detected (for example, for a Wi-Fi system, the specific signal may be a preamble Preamble), the channel may be considered idle. The detecting device can use the unlicensed frequency band for data transmission; if energy detection is used, if the received or detected energy is below a certain threshold, the channel can be considered as idle, and likewise, at this time, the detecting device Data can be transferred using the unlicensed band.

In areas with LBT constraints, devices requiring unlicensed bands need to detect whether the channel is idle before using the unlicensed band for data transmission. That is, data transmission on the unlicensed band is opportunistic. In the future 5th generation (5G) communication system, a new radio (NR) based communication system can also use unlicensed band resources for data communication.

An embodiment of the present application provides a data transmission format transmission method. As shown in FIG. 4, the transmission method may be applied to the network architecture shown in FIG. 1. The access network device in the method may be applied to the structure of FIG. Schematically, the terminal device can be applied to the structural diagram of FIG. The method provided by the embodiment of the present application is exemplified by the data transmission of the licensed band. However, the method provided by the embodiment of the present application is not limited to the unlicensed band, and the method includes the following steps:

Step 401: The terminal device determines a first system parameter or a second system parameter used when the access network device performs data transmission.

Here, the first system parameter and the second system parameter are system parameters (numerology) that can be used when the terminal device and the access network device perform data transmission, and the system parameters include subcarrier spacing (SCS) in the embodiment of the present application. And/or slot duration. For example, a 5G NR system is a communication system that can support multiple subcarrier spacing SCSs, and the duration or duration of each slot is related to the size of the subcarriers. It should be noted that the method provided by the embodiment of the present application is only a 5G NR system, but is not limited to the 5G NR system, and any system supporting multiple system parameters can be applied.

Table 1 shows a correspondence table of subcarrier spacings that can be supported and corresponding slot durations in the NR system. As can be seen from Table 1, the NR system can support at least 6 SCS (kHz), corresponding to 6 different time slot durations (ms). In general, corresponding to the SCS and slot duration included in the same system parameter, the larger the SCS interval, the smaller the corresponding slot duration. We use different SCS as one of the system parameters, that is, each of the rows from the second row to the seventh row in Table 1 can be regarded as one of the system parameters.

Table 1 Correspondence table between different SCS and Slot duration

SCS(kHz)SCS (kHz)	slot duration(ms)Slot duration(ms)
1515	11
3030	0.50.5

6060	0.250.25
120120	0.1250.125
240240	0.06250.0625
480480	0.031250.03125

According to Table 1, the time slots corresponding to the SCSs of 15 kHz, 30 kHz, and 60 kHz are 1 ms, 0.5 ms, and 0.25 ms, respectively, and the schematic diagrams of the SCSs and corresponding different time slots are as shown in FIG. 5 .

In the implementation method of the present application, the terminal device may determine system parameters used when the terminal device and the access network device perform data transmission by using the following manner. The data transmission here includes control data transmission and/or service data transmission, wherein the system parameters corresponding to the control data transmission and the service data transmission may be the same or different.

(1) Pre-set criteria. For example, after the terminal device establishes a radio resource control (RRC) link with the access network device, the system parameter corresponding to the synchronization channel and/or the broadcast channel detected when accessing the access network device may be used as the terminal. System parameters used by the device and the access network device for data transmission. The terminal device can determine the system parameters corresponding to the detected synchronization channel and/or the broadcast channel by means of blind detection.

(2) High-level signaling. For example, when accessing the access network device, the terminal device can determine the system parameters used by the access network device and the terminal device for data transmission through high-level broadcast signaling or user-specific high-level signaling. The high layer broadcast signaling may include signaling transmitted through a broadcast channel, such as control information included in a synchronization signal block (SSB), control information included in remaining minimum system information (RMSI), The control information included in the optional system information (OSI), the control information included in the on-demand system information, and the like are selected. User-specific higher layer signaling may include, for example, RRC signaling.

(3) Physical layer signaling. For example, after the terminal device and the access network device establish an RRC link, the system parameters used by the access network device and the terminal device for data transmission may be determined through physical layer signaling. The physical layer signaling may include signaling sent through a physical layer channel, such as a physical downlink control channel (PDCCH). The physical layer signaling may be public physical layer signaling, or may be terminal device specific physical layer signaling, where the terminal device specific physical layer signaling is a radio network temporary identifier (RNTI) specific to the terminal device. ) Scrambled signaling.

(4) Media access control (MAC) signaling. The MAC signaling may be transmitted through a physical layer data traffic channel, for example, through a physical downlink shared channel (PDSCH).

Step 402: The access network device determines the number of time units for transmitting and/or receiving data.

The time unit for transmitting and/or receiving data indicates that the access network device sends the data to the terminal device in the time unit, and the terminal device sends the data to the access network device.

In the embodiment of the present application, a time unit can be understood as a time slot in the NR system. In order to simplify the description, in the following description, time slots are used for description. It should be noted that the embodiments of the present application are not limited thereto, and may be applied to time units of other representations.

The access network device determines the number of time slots for transmitting and/or receiving data. It can also be understood that the access network device determines the length of data transmission for transmitting and/or receiving data. This is because, if the duration of the time slot is known or fixed, the access network device determines the number of time slots in which the data is transmitted and/or received, equivalent to the access network device determining the transmission and/or The data transmission duration of the received data, wherein the transmission data transmission duration can also be understood as the downlink data transmission duration or the downlink data transmission period, and the received data transmission duration can also be understood as the uplink data transmission duration or the uplink data transmission period.

After competing for the unlicensed band resources, the access network device can adaptively determine the time period for the downlink data transmission and the uplink data transmission on the unlicensed band according to the uplink and downlink data transmission requirements. For convenience of description, in the previous MCOT, the time period in which the access network device is used for downlink data transmission and uplink data transmission may be regarded as a frame structure. Since the access network device can adaptively select the frame structure mode, the frame structure on the unlicensed band when the access network device performs data transmission (including transmission and/or reception) is also flexible.

FIG. 6 shows a schematic diagram of a frame structure, and FIG. 7 shows another frame structure diagram. Figure 6 is applicable to service transmissions with multiple uplink data transmissions and less downlink data transmission, for example, if the access network equipment competes for the unlicensed frequency band resources, if the uplink service to be scheduled for transmission (corresponding to uplink data) If the load is large, the access network device can use one slot for downlink data transmission (for example, sending uplink scheduling control information, etc.) within a limited time range, and then the remaining time slots are used for receiving the terminal device. The uplink data sent.

Figure 7 is applicable to more dynamic and flexible service transmission. The downlink data transmission part and the uplink data transmission part included in each time slot in Figure 7 can be different from each other. This design is more suitable for the service to be slotted. Changing scenes. For example, after the downlink network device sends the downlink data, it hopes to receive the feedback information sent by the terminal device as soon as possible. In this case, a self-contained slot structure can be used (such as the third in FIG. 7). The slot structure of the slot).

In the embodiment of the present application, a time slot having a self-contained slot structure means that the time slot includes orthogonal frequency division multiplexing (OFDM) symbols for downlink data transmission and is used for uplink. OFDM symbol for data transmission. Specifically, if the downlink data transmission part in one time slot includes control information for scheduling the terminal device to transmit uplink data, the uplink data transmission scheduled by the scheduling information may be in an uplink data transmission part included in the time slot; or, if one If the downlink data transmission part in the slot includes the service data sent to the terminal device, the uplink feedback information of the terminal device for the service data may be in the uplink data transmission part included in the time slot. The uplink feedback information may include a hybrid automatic repeat request acknowledgement (HARQ-ACK), where the HARQ-ACK may include an acknowledgement (ACK) and a negative acknowledgement (NACK).

It should be noted that, in combination with the frame structure feature of the access network device in the unlicensed frequency band, in the embodiment of the present application, the number of time slots for transmitting and/or receiving data determined by the access network device may include the following different types. It is understood that the number of time slots (the number of downlink time slots) used by the access network device to transmit data, and the number of time slots (the number of uplink time slots) used by the access network device to receive data are used by the access network device. The sum of the time slot of the transmitted data and the number of time slots for receiving data, and the number of time slots used by the access network device to transmit and receive data (the time slot here includes the part for downlink data transmission and uplink data transmission reception) ). Taking FIG. 6 as an example, in the time range shown, the number of downlink time slots is one, the number of uplink time slots is five, the time slot for transmitting data, and the number of time slots for receiving data. The sum is six, and the number of time slots for transmitting and receiving data is zero. Taking FIG. 7 as an example, in the time range shown, the number of downlink time slots is one, the number of uplink time slots is one, and the number of time slots for transmitting and receiving data is four, and only The sum of the time slot for transmitting data and the number of time slots for receiving data only is two. Also. In the NR system, the data transmission portion included in one slot may include an "unknown" portion in addition to the downlink data transmission portion and the uplink data transmission portion. The duration of a time slot can be unknown, or only part of the time is unknown. In the embodiment of the present application, in order to simplify the description, if only one unknown part and an uplink data transmission part are included in one time slot, the time slot can be regarded as one uplink time slot; if only one unknown part and downlink data are included in one time slot In the transmission part, the time slot can be regarded as a downlink time slot; if a time slot includes both an uplink data transmission part and a downlink data transmission part, and an Unknown part, the time slot can be regarded as one for transmitting data and The time slot in which data is received.

Step 403: The access network device sends the first indication information to the terminal device, where the first indication information is used to indicate the number of time units in which the access network device sends and/or receives data.

Optionally, in the implementation method of the present application, the first indication information used to indicate the number of time units (eg, time slots) may have the following form:

(1) The first indication information may directly indicate the number of slots.

The number of time slots indicated by the first indication information includes a transmission structure corresponding to each time slot (for example, for downlink data transmission, for uplink data transmission, or for downlink data transmission and uplink data transmission, Still belongs to the unknown state). The transmission structure may be indicated by the first indication information, or may be indicated by other indication information. For example, the first indication information indicates that the number of time slots is 5, and then the access network device may indicate, by using the first indication information or other indication information, a transmission structure corresponding to all time slots or partial time slots of the five time slots.

(2) The first indication information indicates a transmission structure corresponding to the time slot.

According to different transmission structures corresponding to the time slots, the terminal device can determine the number of time slots corresponding to different transmission structures, that is, the terminal device can determine the number of time slots for the access network device to send and/or receive data. Based on this, it can also be understood that the first indication information is used to indicate the number of time units of the access network device to send and/or receive data. For example, the first indication information indicates that the transmission structure corresponding to the time slot has the following representation or the content indicated by the first indication information is: [downlink time slot, downlink time slot, uplink time slot, uplink time slot, uplink time slot, uplink time slot], then the terminal device It can be determined that the number of time slots for transmitting data by the access network device is two, and the number of time slots for receiving data is four.

(3) The first indication information indicates a transmission duration of the data transmission by the access network device and the terminal device.

The terminal device may determine the number of time slots for the access network device to send and/or receive data according to the transmission duration and the duration of the time slot corresponding to the system parameter used when the access network device performs data transmission. Based on this, it can also be understood that the first indication information is used to indicate the number of time units of the access network device to send and/or receive data. For example, the first indication information indicates a system for uplink data transmission (or access network device receiving data) with a transmission duration of 4 milliseconds (millisecond, ms), and uplink data transmission between the terminal device and the access network device. The time slot corresponding to the parameter transmission time is 0.5 ms (the SCS can be 30 kHz), and the terminal device can determine that the number of time units for receiving data by the access network device is 4/0.5=8.

It should be noted that, regardless of the representation form of the first indication information, the first indication information may directly indicate the above content, or may be indirectly indicated. The indirect indication may include the first indication information used to indicate an index information associated with the content of the high layer signaling (eg, RRC signaling) configuration. For example, the first indication information may include two bits, and a total of four different indication contents may be corresponding to each other. The four different indication contents may be configured by using RRC signaling.

More specifically, the first indication information may be public control information and carried in a downlink common control channel. For example, the first indication information may be a slot format indicator (SFI) in the NR system, and is carried in a group common physical downlink control channel (group common PDCCH). The SFI may indicate a slot structure or may indicate multiple slot structures. In particular, when the SFI indicates a plurality of slot structures, it can be seen that the SFI indicates the number of time units in which the access network device transmits and/or receives data.

Step 404: The terminal device receives the first indication information sent by the access network device.

It should be noted that, in the method provided by the embodiment of the present application, the labels of the steps 401 and 402 do not limit the sequence, that is, the step 401 may be performed before step 402 or may be performed after step 402. Likewise, step 401 can be performed prior to step 404 or after step 404.

Step 405: The terminal device determines, according to the first indication information, the number of the time units.

The number of the time units has the following characteristics: when the terminal device determines that the terminal device and the access network device use the first system parameter when performing data transmission, the number of the time units is An element included in a set; or, when the terminal device determines that the second system parameter is used when the terminal device and the access network device perform data transmission, the number of the time units is in the second set. Elements included.

The first set corresponds to the first system parameter, the second set corresponds to the second system parameter, and the first set includes at least one M value, where M is greater than N, and N is a maximum value in the second set, and a subcarrier spacing corresponding to the second system parameter is smaller than a subcarrier spacing corresponding to the first system parameter.

It should be noted that, preferably, the time units corresponding to the M and N values herein have the same time unit structure. For example, the M value corresponds to a time unit for uplink data transmission, and the N value corresponds to a time unit for uplink data transmission; the M value corresponds to a time unit for downlink data transmission, and the N value corresponds to It is also a time unit for downlink data transmission; the M value corresponds to the sum of the time unit for downlink data transmission and the number of time units for uplink data transmission, and N corresponding to the downlink data transmission is also used. The sum of the time unit and the number of time units used for upstream data transmission.

In the NR communication system, if the access network device uses the SFI of each time slot to notify the structure of the current time slot, so that the terminal device learns the transmission time of the data transmission with the access network device, it is obvious that the signaling overhead is large, especially When several consecutive time slots have the same structure. The method provided by the embodiment of the present application effectively informs the frame structure on the frequency band when the signaling overhead is ensured, so that the terminal device knows the transmission duration of the data transmission.

FIG. 8 is a schematic diagram of indicating a transmission duration according to an embodiment of the present application, where a time slot of a time unit is transmitted as an example, and a duration of the time slot is measured by using a granularity of 1 ms. Accordingly, the terminal device The transmission time is obtained in units of 1 ms. For example, the first indication information includes L bits for indicating the transmission duration, and L is a positive integer. In the embodiment of the present application, the information of the L bits may be pre-configured or configured by the access network device using high layer signaling, where the high layer signaling may be high layer broadcast signaling or RRC signaling. For example, when the access network device configures control information including L bits, the specific value of L can be configured. Here, the L bits of information may include at least one of the following:

L bits control the size of the information (for example, the number of original information bits);

a time-frequency resource range in which a control channel including L bits of control information is carried; the time-frequency resource range may be represented by, for example, a control resource set (CORESET);

Radio network tempory indentation (RNTI) used for L bits of control information.

The L bits can be represented as 2 ^L states, and the corresponding values constitute the set {1, 2, ..., 2 ^L }. The terminal device receives the first indication information sent by the access network device, and determines a certain value Y in the set of L bits in the first indication information, and determines the transmission duration. Where Y may be pre-configured by the access network device.

The terminal device may determine, according to the formula 1, the transmission duration corresponding to the number of slots in which the access network transmits and/or receives data, that is, the terminal device may use the S in the first indication information, the actually used SCS (first system parameter). And referring to the SCS (second system parameter), determining the transmission duration D corresponding to the number of slots in which the access network transmits and/or receives data:

Where k is the slot duration corresponding to the actually used SCS. As described above, in the embodiment of the present application, the number of time units can be determined by determining the transmission duration.

Take the reference SCS as 15 kHz and Y=3 as an example.

When the actually used SCS is 15 kHz, according to Table 1, the corresponding slot duration under the SCS is 1 ms, that is, k=1 ms. The terminal device determines D = 3 × (15 kHz / 15 kHz) × 1 ms = 3 ms according to Formula 1.

When the actually used SCS is 30 kHz, the corresponding slot duration under the SCS is 0.5 ms, that is, k=0.5 ms. The terminal device determines D = 3 × (30 kHz / 15 kHz) × 0.5 ms = 3 ms according to Formula 1.

When the actually used SCS is 60 kHz, k = 0.25 ms, the terminal device determines D = 3 × (60 kHz / 15 kHz) × 0.25 ms = 3 ms according to Formula 1.

In another embodiment provided by the present application, the terminal device may further determine the transmission duration according to Equation 2, that is, the terminal device may determine the access according to Y in the first indication information and the corresponding slot duration 1 ms (second system parameter). The transmission duration corresponding to the number of slots in which the network transmits and/or receives data:

D=Y×1ms (Equation 2)

Where Y is as described above and is a value in the set {1, 2, ..., 2 ^L }. As described above, in the embodiment of the present application, the number of time units can be determined by determining the transmission duration.

Still take Y=3 as an example.

When the actually used SCS is 15 kHz, 30 kHz, or 60 kHz, the terminal device determines D = 3 × 1 ms = 3 ms according to Formula 2.

It is assumed that the duration set corresponding to the first system parameter includes P elements, wherein each element can be represented by I _i × t1, where I _i is a natural number, and i=1, 2, ..., P; t1 is the first The slot duration in the system parameters. Here, I _i can also be understood as the number of first time slots corresponding to the number of time units in which the access network device transmits and/or receives data when the access network device and the terminal device perform data transmission using the first system parameter, where The first time slot is a time slot corresponding to the first system parameter. For example, when the subcarrier spacing in the first system parameter is 60 kHz, the first time slot corresponding to the first system parameter has the following feature: a slot with a slot duration of 0.25 ms can be regarded as the first time slot. It should be noted that the duration set corresponding to the first system parameter herein can be understood as a time unit in which the access network device sends and/or receives data when the access network device and the terminal device perform data transmission using the first system parameter. The set of transmission durations, where the set of I _i (i=1, 2, . . . , P) can be understood as the first set in the embodiment of the present application, and I _i can be understood as the terminal device and the access network. The number of time units in which the access network device transmits and/or receives data when the device performs data transmission using the first system parameter.

On the other hand, it is assumed that the duration set corresponding to the second system parameter includes Q elements, each of which can be represented by J _j × t2, where J _j is a natural number, and j=1, 2, ..., Q, T2 is the slot duration corresponding to the second system parameter. Here, for the same reason, J _j can also be understood as the second time slot corresponding to the number of time units in which the access network device transmits and/or receives data when the access network device and the terminal device perform data transmission using the second system parameter. The number, wherein the second time slot is a time slot corresponding to the second system parameter. It should be noted that the duration set corresponding to the second system parameter herein can be understood as the transmission duration of the data transmitted and/or received by the access network device when the access network device and the terminal device use the second system parameter for data transmission. The set of constituents, wherein the set of J _j (j=1, 2, . . . , Q) can be understood as the second set in the embodiment of the present application, and J _j can be understood as the data is performed by the terminal device and the access network device. The number of time units in which the access network device transmits and/or receives data when the second system parameter is transmitted.

Assuming that J _max is the largest natural number in J _j , that is, J _max is the maximum value in the second set, the duration set corresponding to the first system parameter includes at least one element, and the element is assumed to be represented by I _x ×t1, where I _x is a value in the first set. Then, the method provided by the embodiment of the present application, I _x >J _max , wherein the sub-carrier spacing corresponding to the first system parameter is greater than the sub-carrier spacing corresponding to the second system parameter. That is, as described above, no matter what type of system parameter is used for data transmission between the access network device and the terminal device, the transmission duration indication under different numerology is close or identical, based on this, if If the sub-carrier spacing corresponding to the system parameter is greater than the sub-carrier spacing corresponding to the second system parameter, the slot duration corresponding to the first system parameter is smaller than the slot duration corresponding to the second system parameter, and the duration set corresponding to the first system parameter includes at least An element, the number of the first time slots corresponding to the element is greater than the number of the second time slots corresponding to the largest element included in the duration set corresponding to the second system parameter, and the first corresponding to the first system parameter The set includes at least one value greater than a maximum value in the second set corresponding to the second system parameter.

For example, if the SCS corresponding to the first system parameter is 60 kHz, the SCS corresponding to the second system parameter is 15 kHz, and the first indication information includes L bits for indicating the transmission duration, then the data between the access network device and the terminal device When the second system parameter is used for transmission, the maximum value of the transmission duration that can be indicated is 2 ^L × t2 (when the SCS corresponding to the second system parameter is 15 kHz, the corresponding slot duration t2 is 1 ms), where 2 ^L can correspond to The aforementioned J _max . On the other hand, when the first system parameter is used for data transmission between the access network device and the terminal device, the transmission duration that can be indicated may be one of the following:

1×t1, 2×t1, ...,

When the SCS corresponding to the first system parameter is 60 kHz and the corresponding slot duration t1 is 0.25 ms (refer to Table 1), the transmission duration that can be indicated may be one of the following:

1 × 0.25, 2 × 0.25, ..., 1 × (60 kHz / 15 kHz) × 0.25, 2 × (60 kHz / 15 kHz) × 0.25, ..., 2 ^L × (60 kHz / 15 kHz) × 0.25

Here, 1, 2, ..., 1 × (60 kHz / 15 kHz), 2 × (60 kHz / 15 kHz), 2 ^L × (60 kHz / 15 kHz) may correspond to the aforementioned I _i . Obviously, at least 2 ^L × (60 kHz/15 kHz) of the number of time units that can be indicated by the first system parameter (SCS is 60 kHz) for data transmission between the access network device and the terminal device is greater than the access network device and the terminal. The data transmission between devices uses the maximum value 2 ^L of the number of time units that can be indicated by the second system parameter (SCS is 15 kHz).

As a typical example of the above characteristics, there is a certain proportional relationship between I _x and J _max , that is, I _x /J _max =S* (the SCS corresponding to the first system parameter/the SCS corresponding to the second system parameter), where S Is a positive integer.

As another typical example of the above features, I _i corresponding to each element included in the first set corresponding to the first system parameter may be found in a second set corresponding to the second system parameter. _j , where I _i = K1 * J _j , and K1 is a positive integer. Alternatively, using the J _j corresponding to each element included in the second set corresponding to the second system parameter, in the first set corresponding to the first system parameter, I _i can be found, wherein J _j =1/ K2*I _i , where K2 is a positive integer.

For example, as described above, if the control information includes 2 bits for indicating the transmission duration, then 2 bits can correspond to 1, 2, 3, and 4, respectively. When the SCS is 15 kHz (assuming the second system parameter), the indicated transmission duration is The number of corresponding slots (which can be understood as the value of J _j ) is 1, 2, 3, 4 respectively; when the SCS is 60 kHz (assuming the first system parameter), the number of slots corresponding to the indicated transmission duration (may be It is understood that the value of I _i is 4, 8, 12, and 16, respectively. Based on this, it can be observed that there is a certain ratio between the I _i corresponding to each element included in the first set corresponding to the first system parameter and the J _j corresponding to each element included in the second set corresponding to the second system parameter. Relationship (for example, a scale value of 4).

Optionally, in the embodiment of the present application, the first set may include the same number of elements as the second set, and the first set may use {a ₁ , a ₂ , . . . , a _w }, The second set can be represented by {b ₁ , b ₂ ,..., b _w }, in which case

The value is an integer multiple of K, where a _i , b _i , and w are positive integers, and i is a natural number greater than 0 and not greater than w.

Optionally, in the embodiment of the present application, the number of elements included in the first set may be different from the number of elements included in the second set, for example, the number of elements included in the first set is greater than the number of elements included in the second set, And the first set can be represented by {a ₁ , a ₂ , . . . , a _x }, and the second set can be represented by {b ₁ , b ₂ , . . . , b _y }, and the elements in the second set can always be in the first Find a set of elements in a set that have a fixed proportional relationship, ie

The value is an integer multiple of K, where i is a natural number greater than 0 and not greater than y, x, y is a positive integer, x is greater than y, and the set {a ₁ , a ₂ ,..., a _y } is a set {a ₁ , a ₂ , ..., a _x } true subset.

Optionally, in the embodiment of the present application, the number of elements included in the first set may be different from the number of elements included in the second set, for example, the number of elements included in the first set is smaller than the number of elements included in the second set, And the first set can be represented by {a ₁ , a ₂ , . . . , a _u }, and the second set can be represented by {b ₁ , b ₂ , . . . , b _v }, and the elements in the first set can always be in the first Find the elements in the second set that have a fixed proportional relationship with them, ie

The value is an integer multiple of K, where i is a natural number greater than 0 and not greater than u, u, v is a positive integer, u is less than v, and the set {b ₁ , b ₂ ,..., b _u } is a set {b ₁ , true subset of b ₂ , ..., b _v }.

Optionally, in the embodiment of the present application, the first set includes at least one element, and a ratio between the element and at least one element in the second set is an integer multiple of K, where K is the first system parameter. a ratio between a corresponding subcarrier spacing and a subcarrier spacing corresponding to the second system parameter. For example, the first set is represented by {a ₁ , a ₂ , . . . , a _p }, and the second set is represented by {b ₁ , b ₂ , . . . , b _q }, and at least one element (or numerical value) exists in the first set. The ratio between a _i and at least one element (or value) b _j in the second set is an integer multiple of K. In this example, some of the elements in the first set, rather than all of them, have a fixed proportional relationship with some of the elements in the second set, rather than all of them.

It should be noted that, in the embodiments of the present application, the values in the set and the elements in the set can be understood as the same concept.

It should be noted that if the number of slots corresponding to each element included in the first set corresponding to the first system parameter can be found in the second set corresponding to the second system parameter, the number of slots corresponding to the ratio may be found. The transmission time length of the slot determined by the data transmission using the second system parameter is not indicated by the indication information, that is, the circled portion in FIG.

In FIG. 8, when the SCS is 30 kHz, one slot (0.5 ms) included in the transmission duration cannot be indicated by the indication information; when the SCS is 60 kHz, the transmission duration includes three slots (the transmission duration of each slot is 0.25) Ms) is also not indicated by the indication. Optionally, the slot format may be used in combination to indicate that the SFI or the terminal device-specific control information indicates a transmission duration portion that the indication information cannot indicate. The terminal device-specific control information includes control information that only a specific terminal device can demodulate, for example, control information that is scrambled using a terminal device-specific RNTI. For example, in conjunction with FIG. 8, when the SCS is 60 kHz, the access network device can use the SFI to indicate that there are three uplink slots after 3 ms, wherein the indications of the three uplink slots can be displayed, and the starting positions of the three uplink slots. The indication (eg after 3ms here) can be explicit or implicit. Explicitly, after the SFI includes a control field specifically indicating 3ms, the implicit indication may be an indication of the combined indication information, and the terminal device may default to the SFI (second indication information) indication after the duration indicated by the first indication information. The number of slots.

For another example, the length of time circled in FIG. 8 can be indicated by terminal device specific control information. As shown in FIG. 8, the terminal device-specific control information may be sent on the first downlink slot. Due to the implementation manner of FIG. 8, the uplink/downlink control information is located between the time slot and the circled/uplink time slot of the circled portion. The time delay is generally greater than the minimum processing capability, for example, greater than one time slot, so that regardless of the capabilities of the terminal device, the terminal device specific control information can be scheduled on the last several uplink/downlink time slots.

FIG. 9 shows another implementation in which the resolution indication information is not indicated, and the above description is equally applicable to FIG. Different from FIG. 8, the duration portion in which the indication information cannot be indicated is located in one or several slots starting after the end of the downlink, that is, the portion circled in FIG. 9 for the SCS of 30 kHz and the SCS of 60 kHz. The circled part may be indicated by the indication information, and the indication information may be carried in the same downlink control channel as the indication information indicating the duration, or may be separately carried; or the implicit indication method may also be used. That is, the terminal device may include an uplink time slot between the default downlink time slot and the duration indicated by the indication information. It should be noted that if the terminal device specific control information is used to notify the part circled in FIG. 9 , the access network device may also acquire the capability of the terminal device first, and then determine that the part circled in FIG. 9 can be scheduled through specific signaling. Which terminal devices are given.

In addition, it should be noted that, regardless of the system parameters used, if both the downlink DL and the uplink UL are included in the corresponding time slot, the transmission duration in the time slot may not be indicated by the indication information. At this time, SFI can also be used to indicate the portion of the transmission duration within the slot. This is valid for both the implementations of Figures 8 and 9. For example, taking SCS 60 kHz as an example, the transmission duration indicated by the blank portion in FIG. 10 can be indicated by SFI, for example, by an unknown state indicated by SFI.

It should be noted that, in the embodiment of the present application, the indication information for indicating the transmission duration may also be indicated by using only the SFI.

As another optional implementation manner, the first indication information indicates a transmission structure corresponding to the time slot as an example for description. It can be understood that when the first indication information indicates the transmission structure corresponding to the at least one time slot, the terminal device may determine, according to the first indication information, the number of time slots corresponding to the specific transmission structure, which is equivalent to determining the access network. The number of time units that the device sends and/or receives data.

For example, when the subcarrier spacing used by the data transmission between the access network device and the terminal device is 15 kHz (corresponding to the second system parameter), the number of the first first time slot that the first indication information can indicate is 4, and The content indicated by the first indication information or the content corresponding to the first indication information is

[Second time slot with transmission structure 1 having a second time slot of transmission structure 2 having a second time slot of transmission structure 3 having a second time slot of transmission structure 4]

It can be seen that, in this example, the content indicated by the first indication information includes a transmission structure corresponding to each time slot in addition to the number of time slots (including 4 time slots). It should be noted that the transmission structure 1, the transmission structure 2, the transmission structure 3, and the transmission structure 4 are only used to distinguish the transmission structures corresponding to different time slots, that is, the transmission structure 1, the transmission structure 2, the transmission structure 3, and the transmission structure 4 They are the same transmission structure, or different transmission structures, or part of the transmission structure is the same, and some transmission structures are different. More generally, the transmission structure 1, the transmission structure 2, the transmission structure 3, and the transmission structure 4 herein may be any of the transmission formats shown in Table 2 below.

Table 2 slot format diagram

Table 2 Schematic diagram of time slot format (continued)

In Table 2, a total of 256 different slot formats (Format 0 to Format 255) can be supported. However, NR only supports 62 slot formats with explicit meanings, and Format 62 to Format 255 are currently reserved. One of the slot formats is represented by a different transmission type corresponding to 14 OFDM symbols included in the slot, where D (downlink) indicates that the OFDM symbol is used for downlink data transmission, and U (uplink) indicates that the OFDM symbol is used for uplink data. Transmission, X (flexible) indicates that the OFDM symbol is in an unknown state. On the other hand, with the method provided by the embodiment of the present application, when the subcarrier spacing used for data transmission between the access network device and the terminal device is 30 kHz (corresponding to the second system parameter), the content indicated by the first indication information or Said that the content corresponding to the first indication information may be

[The first time slot with transmission structure 1 has a first time slot of transmission structure 2 The first time slot with transmission structure 3 has a first time slot with transmission structure 4 The first time slot with transmission structure 5 has transmission structure 6 The first time slot has a first time slot of the transmission structure 7 having a first time slot of the transmission structure 8]

The same as above, the transmission structures 1 to 8 herein are only for distinguishing the transmission structures corresponding to different time slots, and may be any one of the time slot formats in Table 2. Based on this example, it can be observed that when the data transmission between the access network device and the terminal device uses different system parameters, the number of time units indicated by the first indication information has the following characteristics: the first indication information indicated by the SCS is indicated by The number of the first time slots is greater than the maximum number of second time slots indicated by the first indication information that is smaller than the SCS. The slot duration corresponding to the SCS large system parameter is less than the slot duration corresponding to the system parameter with a small SCS.

Therefore, when the data transmission between the access network device and the terminal device uses different system parameters, the first indication information may indicate a comparable or the same transmission duration. This applies in particular to unlicensed band resources, since access network devices are limited in data transmission time for data transmission on unlicensed band resources after competing for unlicensed band resources, such as MCOT, and MCOT The length is generally restricted by the geographical regulations, and is independent of different system parameters. Therefore, the implementation of the present application can simplify the design of the first indication information under different system parameters, and implement an effective data transmission format and/or data transmission corresponding. An indication of the number of time units.

Optionally, in the embodiment of the present application, the terminal device may periodically detect the first indication information sent by the access network device, and correspondingly, the access network device may periodically send the first indication information. Assuming that the terminal device detects the first indication information every m time slots, in order to ensure that the terminal device can learn the transmission structure corresponding to each time slot, the first indication information may indicate the transmission corresponding to each time slot of the m time slots. structure. The method of the embodiment of the present application, in particular, when the data transmission between the access network device and the terminal device uses the first system parameter of the SCS, the number of slots indicated by the first indication information may be greater than when the access network is used. When the data transmission between the device and the terminal device uses the second system parameter of the SCS, the number of time slots that the first indication information can indicate. Correspondingly, when the data transmission between the access network device and the terminal device uses the first system parameter of the SCS, the period of detecting the first indication information by the terminal device is greater than that of the access network device and When the data transmission between the terminal devices uses the second system parameter of the SCS, the terminal device detects the period of the first indication information.

The following is a specific form of the transmission structure indicated by the first indication information when different system parameters are used for data transmission between the access network device and the terminal device. The SCS corresponding to the first system parameter is 60 kHz, and the SCS corresponding to the second system parameter is 15 kHz.

(1) When the data transmission between the access network device and the terminal device uses the second system parameter, the content indicated by the first indication information, for example, SFI, may be as shown in Table 3.

Table 3 SCS=15kHz, the first indication information indicates the content example table

格式 format		时隙1Time slot 1	时隙2 Time slot 2	时隙3 Time slot 3	时隙4 Time slot 4
第一种格式First format	下行时隙Downlink time slot	下行时隙Downlink time slot	下行时隙Downlink time slot	下行时隙Downlink time slot
第二种格式Second format	下行时隙Downlink time slot	下行时隙Downlink time slot	下行时隙Downlink time slot	上行时隙Uplink time slot
第三种格式Third format	下行时隙Downlink time slot	下行时隙Downlink time slot	上行时隙Uplink time slot	上行时隙Uplink time slot
第四种格式Fourth format	下行时隙Downlink time slot	上行时隙Uplink time slot	上行时隙Uplink time slot	上行时隙Uplink time slot

In the table 3, when the SCS is 15 kHz, the number of time slots indicated by the first indication information is four, and the number of time units and the number of time units for transmitting the data by the access network device indicated by the first indication information are different for different formats. The number of time units of data is [4 0], [3 1], [2 2], [1 3], where X in [X Y] represents the number of time units in which the access network device transmits data, Y Indicates the number of time units in which the access network device receives data, and the time slot 1 to time slot 4 can be understood as the first time slot to the fourth time slot indicated by the SFI, that is, the SFI indicates the time from the first to the last. The order corresponds to different time slots. With the method of the embodiment of the present application, when the data transmission between the access network device and the terminal device uses the first system parameter, the number of downlink time slots indicated by the first indication information is at least four, or the first indication. The number of uplink time slots indicated by the information is at least greater than three, or the total number of time slots indicated by the first indication information for downlink data transmission and uplink data transmission is greater than four.

In this case, the content indicated by the first indication information such as SFI may be as shown in Table 4. In Table 4, S1 represents time slot 1, S2 represents time slot 2, and so on, and S1 to S16 are the first time slot to the 16th time slot indicated by SFI, and D and U respectively indicate that the time slot is used for Downlink data transmission is also used for uplink data transmission. Based on Table 4, for different formats (represented by 0, 1, 2, and 3 in Table 4, respectively), when the SCS used for data transmission between the access network device and the terminal device is 60 kHz, the first indication information indicates The number of slots in which the access network device transmits data and the number of slots in which data is received are [16 0], [12 4], [8 8], [4 12], respectively. Based on the above description, it can be observed that when SCS=15 kHz, the number of downlink time slots indicated by the first indication information may be {4, 3, 2, 1}, and the number of indicated uplink time slots may be {0, 1, 2, 3}, the number of indicated time slots may be 4, and these may correspond to the second set respectively. On the other hand, when SCS=60 kHz, the number of downlink time slots indicated by the first indication information may be {16, 12, 8, 4}, and the number of indicated uplink time slots may be {0, 4, 8 , 12}, the number of indicated slots is 16, which may correspond to the first set respectively.

In this example, any one of the elements included in the first set can find an element proportional to it in the second set, and the proportional relationship between the two elements is between the first system parameter and the second system parameter. The proportional relationship is related to the number of uplink time slots indicated by the first indication information. The ratio between the number of uplink time slots indicated by SCS=60 kHz and the number of uplink time slots indicated by SCS=15 kHz may be: 12/3. , 8/2, 4/1, etc. Similarly, the number of downlink time slots indicated by the first indication information is taken as an example, and similar descriptions are also made. That is, in general, in this example, when SCS=15 kHz, X, or Y, or X and Y in [X Y] can be regarded as elements included in the second set; when SCS=60 kHz, [ X, or Y, or X and Y in X Y] can be regarded as elements included in the first set.

Table 4 SCS=60kHz, the first indication information indicates the content example table

(2) When the data transmission between the access network device and the terminal device uses the second system parameter, the content indicated by the first indication information, for example, SFI, may be as shown in Table 5.

Table 5 SCS=15kHz, the first indication information indicates the content example table

format

Time slot 1

Time slot 2

Time slot 3

Time slot 4

第一种格式First format	下行时隙Downlink time slot	下行时隙Downlink time slot	下行时隙Downlink time slot	上行时隙Uplink time slot
第二种格式Second format	下行时隙Downlink time slot	下行时隙Downlink time slot	上行时隙Uplink time slot	不指示Not indicating
第三种格式Third format	下行时隙Downlink time slot	上行时隙Uplink time slot	上行时隙Uplink time slot	不指示Not indicating
第四种格式Fourth format	下行时隙Downlink time slot	上行时隙Uplink time slot	不指示Not indicating	不指示Not indicating

The main difference between the table 5 and the table 3 is that the number of time slots indicated by the first indication information may be different. For example, the second format and the third format, the first indication information indicates the transmission corresponding to the three time slots. Structure; in the fourth format, the first indication information indicates only the transmission structure corresponding to the two time slots. For different formats, the number of time units for transmitting data and the number of time units for receiving data indicated by the first indication information are [3 1], [2 1], [1 2], [1 1 ], wherein the X and Y expressions in [X Y] have the same meaning as before.

With the method of the embodiment of the present application, when the data transmission between the access network device and the terminal device uses the first system parameter, the number of downlink time slots indicated by the first indication information is at least four, or the first indication. The number of uplink time slots indicated by the information is at least greater than two, or the total number of time slots indicated by the first indication information for downlink data transmission and uplink data transmission is greater than four. For example, in this case, the content indicated by the first indication information, for example, the SFI, may be as shown in Table 6. The meanings of the symbols in Table 6 are the same as those in Table 4, and are not specifically described herein.

Based on Table 6, for different formats, when the SCS used for data transmission between the access network device and the terminal device is 60 kHz, the number of time slots in which the access network device indicated by the first indication information transmits data and the received data The number of slots is [12 4], [8 6], [4 8], [4 9], respectively. Based on the above description, it can be observed that when SCS=15 kHz, the number of downlink time slots indicated by the first indication information may be {3, 2, 1}, and the number of indicated uplink time slots may be {1, 2}. The number of indicated time slots may be {4, 3, 2}, and these may correspond to the second set respectively. On the other hand, when SCS=60 kHz, the number of downlink time slots indicated by the first indication information may be {12, 8, 4}, and the number of indicated uplink time slots may be {4, 6, 8, 9 }, the number of indicated time slots is {16, 14, 12, 13}, which respectively correspond to the first set. In this example, some of the elements included in the first set can find elements proportional to them in the second set, and the proportional relationship between the two elements is proportional to the first system parameter and the second system parameter. For example, the number of uplink time slots indicated by the first indication information is taken as an example, and the number of uplink time slots corresponding to SCS=60 kHz is related to

The ratio of the number of uplink slots corresponding to SCS=15 kHz may be: 16/4, 12/3, taking the number of downlink slots indicated by the first indication information as an example, and the number of downlink slots corresponding to SCS=60 kHz. The ratio between the number of downlink slots corresponding to SCS=15 kHz may be: 12/3, 8/2, 4/1.

Table 6 SCS=60kHz, the first indication information indicates the content example table

It should be noted that, in the embodiment of the present application, the transmission structure corresponding to the first indication information may be configured by the RRC, and then dynamically indicated by the first indication information, and the time unit for the access network device to send data and/or receive data ( The number of slots, for example, the structure types corresponding to slot 1 to slot 4 in Table 3 can be configured through RRC, and then the first indication information uses 2 bits to indicate different transmission structures. For example, when the value of the 2 bit is 00, the terminal device can determine that the transmission structure corresponding to the time slot 1 to the time slot 4 is:

[downlink time slot downlink time slot downlink time slot downlink time slot]

When the value of the 2 bit is 11, the terminal device determines that the transmission structure corresponding to the time slot 1 to the time slot 4 is:

[downlink time slot uplink time slot uplink time slot uplink time slot]

Tables 4 to 6 also have similar descriptions, and are not described herein.

It should be noted that, in the embodiment of the present application, the meaning of the indication is that the control information (first indication information) does not indicate the transmission structure of the corresponding time slot. For example, in Table 6, for format 1, the first indication information indicates only the transmission structure of S1-S14, and the transmission structure indicating S15 and S16 is not indicated.

As an optional implementation manner, no matter what system parameters are used for data transmission between the access network device and the terminal device, the transmission structure corresponding to a set of system parameters may be pre-configured by the standard pre-defined or the access network device. Then, the first indication information sent by the access network device directly indicates the transmission structure corresponding to the set of system parameters. For example, the access network device is pre-configured (for example, by RRC signaling) with a transmission structure corresponding to SCS=15 kHz (corresponding to the second system parameter). For example, as shown in Table 3, the first indication information includes at least 2 bits, which may be included in the indication table 3. Transmission structure, when the terminal device determines that the system parameter used for data transmission between the access network device and the terminal device is different from SCS=15 kHz, for example, SCS=60 kHz (corresponding to the first system parameter), according to the first indication information, The first system parameter and the second system parameter determine a number of time units (time slots) corresponding to the second system parameter for transmitting and/or receiving data. Still taking Table 3 as an example, if the first indication information includes 2 bits of information, and the indicated transmission structure is the third format, the terminal device determines, according to the first indication information, that the indicated transmission structure corresponds to the third type corresponding to 15 kHz. The format, and then according to the first system parameter and the second system parameter, the transmission format corresponding to 60 kHz can be determined proportionally, that is, the transmission structure corresponding to the eight downlink time slots and the eight uplink time slots in Table 4.

As another optional implementation manner, no matter what system parameters are used for data transmission between the access network device and the terminal device, the transmission structure corresponding to a set of system parameters may be pre-defined by the standard pre-defined or the access network device. Then, the first indication information sent by the access network device directly indicates the transmission structure corresponding to the set of system parameters. The terminal device may determine, according to the first indication information and the transmission structure corresponding to the set of parameters, that the access network device sends and/or receives data when other system parameters are used when data transmission between the access network device and the terminal device is used. The transmission time corresponding to the time unit. If the transmission structure indicated by the first indication information is the second format, the terminal device determines, according to the received first indication information, that the transmission structure indicated by the first indication information is three downlink time slots. And an uplink time slot, the terminal device may determine, according to the slot duration corresponding to the SCS=15 kHz, that the data transmission length between the access network device and the terminal device may be 4 ms, and the number of time units used for downlink data transmission corresponds to The transmission duration is 3 ms, and the transmission time corresponding to the number of time units for uplink data transmission is 1 ms.

In the embodiment of the present application, the first indication information is used to indicate the number of time units for the access network device to send and/or receive data within a preset time range, where the access is for the unlicensed band resource, as described above. When the network equipment competes to the unlicensed band resources, the time required to re-determine the license-free band availability through the LBT is limited, for example, subject to MCOT restrictions. Therefore, on the unlicensed band resource, in order to ensure the validity of the indication indicated by the first indication information, the first indication information may indicate a transmission structure corresponding to a time slot included in an MCOT, or may indicate an access included in an MCOT. The number of time units in which the network device sends data and/or receives data. Certainly, the length of time indicated by the first indication information may also be greater than one MCOT. For example, the access network device may pre-determine a downlink time unit pre-configured by the access network device after a competition for resources (except for one MCOT). Time unit for downlink data transmission) and/or uplink time unit (time unit for uplink data transmission).

It should be noted that, in the embodiment of the present application, the first indication information is used to indicate the number of time units in which the access network device sends and/or receives data in a preset time range, which may be understood as the first indication information indication. The transmission time length corresponding to the number of time units is within the transmission duration corresponding to the preset time range, or the time units indicated by the first indication information are within a preset time range. The starting position of the preset time range can be indeterminate. For example, in the unlicensed band resource, taking the access network device as an example, the access network device needs to determine the starting position of the MCOT or a transmission opportunity (TxOP, which may also be referred to as a transmission opportunity) according to the result of the CCA. The transmission duration corresponding to MCOT or TxOP is related to regulatory constraints and can be considered as pre-set. Therefore, when the first indication information indicates the number of time units for the access network device to send and/or receive data within a preset time range, it can be understood that the indicated time units are within a preset time range. Or the transmission duration corresponding to the indicated time unit is within the corresponding transmission duration within a preset time range.

Optionally, the first indication information is further used to indicate a starting position of the number of time units; or the terminal device receives the second indication information sent by the access network device, where the second indication information is used to indicate the number of time units. The starting position. Regardless of the SCS included in the system parameters used for data transmission between the access network device and the terminal device, the indication information uses 1 ms as the granularity unit to indicate the transmission duration, and the start position of the time unit can pass the system parameters currently used. The corresponding time slot length is notified in units. The following uses the first indication information as an example to illustrate several implementation manners when the first indication information indicates the starting position of the number of time units. It should be noted that the following description also applies to the second indication information.

It should be noted that, when the first indication information or the second indication information indicates the starting position of the number of time units, the time units corresponding to the indicated number of time units may be consecutive in time. And a plurality of time units for transmitting data or for receiving data.

The starting position of the number of time units can be understood as the time unit from which the access network device transmits data is measured. The starting position of the number of time units may be associated with the first time offset. For example, the starting position of the number of time units may be a time after the time unit is shifted backward by the first time offset. The starting boundary of the unit. Optionally, the first time offset may be indicated by the first indication information. The first time offset may include the following implementation manners:

(1) The starting position of the number of time units may be the starting position of the corresponding time unit after the time unit in which the first indication information is located is shifted backward by the first time offset. That is, the first time offset is a time offset between a time unit in which the first indication information is located and a first time unit corresponding to the number of time units indicated by the first indication information.

For example, as shown in FIG. 12a and FIG. 12b, FIG. 12a and FIG. 12b illustrate the number of time units for receiving data by the access network device indicated by the first indication information. In FIG. 12a, the specific value corresponding to the first time offset is 1 (representing 1 time unit or 1 time slot), and FIG. 12b, the specific value corresponding to the first time offset is 2 (representing 2 time units) Or 2 time slots).

(2) More generally, the first time offset is a time offset between a specific time unit and a first time unit corresponding to the number of time units indicated by the first indication information. The specific time unit here may have a certain preset relationship with the time unit in which the first indication information is located, for example, the next time unit of the time unit in which the first indication information is located, for example, as shown in FIG. 13 , still in FIG. 13 The number of time units for receiving data by the access network device indicated by the first indication information is taken as an example.

For another example, if the first indication information indicates the number of time units of the access network device receiving data, the starting position of the number of time units may be based on the ending position of the downlink time unit for sending data of the access network device. To measure, as shown in Figure 14. In Fig. 14, the specific value corresponding to the first time offset is 1 (representing 1 time unit or 1 time slot).

In the method provided by the embodiment of the present application, the terminal device determines the starting position of the number of time units indicated by the first indication information according to the control information sent by the access network device (referred to as control information A for convenience of description). (For convenience of description, denoted as the start position #1), the relationship between the time unit in which the control information is located (for the convenience of description, the start position of the time unit is referred to as the start position #2) may have the following relationship Representation. It should be noted that the starting position herein may be represented by the starting boundary of the first time unit in the number of time units indicated by the first indication information, and may also have other representations, which are not specifically limited; The control information may be the first indication information, or may be other indication information different from the first indication information, for example, the second indication information, and may also have other representations, which are not specifically limited. When the indication information indicating the start position of the number of time units is different from the first indication information (for example, the second indication information), the first indication information and the second indication information may be carried on the same downlink control channel, and may also be carried in Different downlink control channels. The following is a detailed description of the possible relationship between the starting position #1 and the starting position #2.

(1) The starting position #1 and the starting position #2 are the same starting position.

For example, when the first indication information indicates the number of time units for transmitting data to the access network device, the starting position of the number of time units may be the same as the starting position of the time unit including the control information A. For another example, when the first indication information indicates the number of time units for transmitting data and receiving data for the access network device, the starting position of the number of time units may be the same as the starting position of the time unit including the control information A. . As shown in Figure 15.

(2) There is a certain time offset between the starting position #1 and the starting position #2, and after the starting position #1 is after the starting position #2, the time offset can be expressed by the number of time units. .

For example, when the first indication information indicates the number of time units for transmitting data and receiving data, the number of time units for transmitting data, or the number of time units for receiving data, the starting position #1 starts from This relationship can be satisfied between the starting position #2. As shown in Figure 16.

(3) There is a certain time offset between the starting position #1 and the starting position #2, and the starting position #1 is before the starting position #2, and the time offset can also be determined by the number of time units. Said.

In the embodiment of the present application, if the starting position #1 and the starting position #2 are the same starting position, the terminal device detects the control information A (for example, the first indication information or the second indication information), then The starting position of the number of time units indicated by the first indication information may be determined, that is, the starting boundary of the time unit including the control information A may be understood as the starting position of the number of time units indicated by the first indication information; There is a certain time offset between the start position #1 and the start position #2, and the control information A may include related information of the time offset. For example, the control information A may indicate the time offset, based on which the terminal device once When the control information A (for example, the first indication information or the second indication information) is detected, the time unit position of the control information A and the time offset indicated by the control information A may be included, and the time unit indicated by the first indication information is determined. The starting position of the number.

For example, when the first indication information indicates the number of time units for transmitting data for the access network device, or when the first indication information indicates the number of time units for transmitting data and receiving data for the access network device, the starting position This relationship can be satisfied between #1 and the starting position #2. As shown in Figure 17.

It should be noted that, in the embodiment of the present application, if there is a time offset between the starting position #1 and the starting position #2, the time offset may be represented by the number of time units, or may also be through the time unit. The transmission duration corresponding to the number is expressed, or other forms are used, and no specific limitation is imposed.

It should be noted that, in the embodiment of the present application, if the first indication information sent by the access network device indicates the sum of the number of time units of the access network device sending data and receiving data, the terminal device receives the first When an indication information is used, in addition to determining the sum of the number of time units for transmitting data and receiving data by the access network device, the number of time units for transmitting data by the access network device may be determined according to the first indication information, or An indication information determines the number of time units in which the access network device receives data. For example, as described above, when the first indication information indicates the transmission structure corresponding to the time slot, the terminal device may determine the content according to the first indication information. In particular, the terminal device may determine the starting position of the number of uplink time units according to the number of downlink time units indicated by the first indication information.

In the embodiment of the present application, after receiving the control information A sent by the access network device for indicating the starting position of the number of time units, the terminal device may determine the starting position by:

(1) If the terminal device determines that the data transmission between the access network device and the access network device uses the first system parameter, the terminal device may determine the starting position according to the control information A and the first system parameter.

(2) If the terminal device determines that the data transmission between the access network device and the access network device uses the second system parameter, the terminal device may determine the starting position according to the control information A and the second system parameter.

(3) Regardless of the type of system parameter used for data transmission between the terminal device and the access network device, the terminal device may be based on the control information A and the reference system parameter (for example, the second system parameter in the embodiment of the present application) , determine the starting position.

For the specific indication manners of the modes (1) and (2), for example, as shown in FIG. 8, the offset in FIG. 8 can be understood as the content indicated by the control information A. In FIG. 8, when SCS=15 kHz, the number of slots corresponding to the offset indicated by the control information A (in this example, the first indication information) is 1, and the corresponding transmission duration is 1 ms, and the uplink indicated by the first indication information is If the number of slots is 3, the terminal device may determine, after 1 slot (or 1 ms) after the detected first indication information, a starting position of the number of uplink slots indicated by the first indication information; Similarly, when SCS=30 kHz, the number of slots corresponding to the offset indicated by the control information A (in this example, the first indication information) is 1, and the corresponding transmission duration is 0.5 ms, and the uplink indicated by the first indication information is If the number of time slots is 6, the terminal device may determine, starting after one time slot (or 0.5 ms) after the detected first indication information, the starting position of the number of uplink time slots indicated by the first indication information. When SCS=60 kHz, the number of slots corresponding to the offset indicated by the control information A (in this example, the first indication information) is 1, and the corresponding transmission duration is 0.25 ms, and the uplink time slot indicated by the first indication information The number is 12, the terminal device can determine the first detected The start position after the one time slot (or 1 ms) following the indication information is the start position of the number of uplink time slots indicated by the first indication information. The advantage of this is that the starting position of the time unit for transmitting data and/or receiving data is related to the system parameter corresponding to the actual data transmission, and the subcarrier spacing used by the data transmission between the access network device and the terminal device is relatively large. When compared to the smaller subcarrier spacing used for transmission transmission between the access network device and the terminal device, since the transmission time length of the corresponding time slot is shorter, for the same control information A, when accessing the network device and When the subcarrier spacing used for data transmission between the terminal devices is large, the terminal device can identify the starting position of the more flexible time unit.

For the specific indication manner of the mode (3), as shown in FIG. 9, regardless of the type of system parameters used for data transmission between the terminal device and the access network device, the terminal device transmits the time slot according to the time slot corresponding to SCS=15 kHz. To understand the starting position of the time unit. For example, when SCS=15 kHz, SCS=30 kHZ, and SCS=60 kHz, the transmission duration corresponding to the indication information (for example, offset) associated with the start position in the control information A is 1 ms. Optionally, in the case that the foregoing SCS corresponds to different values, the offsets in the control information A that are adjacent to the start position may all correspond to the same value, for example, all are 1, and the terminal device may transmit according to the time slot corresponding to SCS=15 kHz. The length of time to interpret the corresponding specific value of 1 is 1*1ms=1ms. The advantage of this is that when the data transmission between the access network device and the terminal device uses a larger subcarrier spacing, the indication information associated with the starting location is corresponding to the smaller subcarrier spacing. The time slot transmission time length is understood. Therefore, when the data transmission between the access network device and the terminal device uses a larger subcarrier spacing, the time offset that can be indicated is greater under the same control information A bit overhead. . The time offset here refers to the time offset between the start position of the number of time units indicated by the first indication information and the start position of the control information A.

As a special implementation manner, the terminal device may determine, according to the first indication information, a data transmission duration of the data received by the access network device and a start position of the data transmission duration. In this case, regardless of the system parameters used for data transmission between the access network device and the terminal device, the terminal device can determine the starting position of the data transmission duration according to the corresponding time slot transmission duration under the specific system parameter. For example, the specific system parameter is SCS=15 kHz, the corresponding time slot transmission duration is 1 ms, and the specific representation of the control information A associated with the start position of the data transmission duration is assumed to be U, and the terminal device can always be based on U*1 ms. Determine the starting position of the data transmission duration.

It should be noted that, in the embodiment of the present application, the time offset associated with the start position of the number of time units (eg, the first time offset, time offset, offset, etc. described above) may be controlled. The information (the first indication information or the second indication information) is displayed as an indication, and may be implicitly indicated, and is not specifically limited herein. When the manner of displaying the indication is adopted, it means that the bit included in the control information (the first indication information or the second indication information) indicates the offset; when the implicit indication mode is adopted, in one mode, when the first When the indication information (or control information) indicates the transmission structure corresponding to the time slot, for example, the content indicated by the first indication information is:

[downlink time slot downlink time slot uplink time slot uplink time slot uplink time slot uplink time slot]

The terminal device may determine that if the first downlink time slot indicated by the first indication information is used as a reference point, the start position of the number of uplink time slots used by the access network device to receive data and the reference point may be determined. The offset is 2 slots. The implicit indication may also have other indication forms, and is not specifically limited.

In the method provided by the embodiment of the present application, the first indication information used to indicate the number of time units of the access network device to send data and/or receive data may be physical layer common control information, and is carried in the downlink common control channel. For example, the cell common RNTI scrambling is implemented. Because the physical layer common control information is valid for multiple terminal devices, the first indication information is implemented by using common control information, which can save control signaling overhead.

It should be noted that, in the embodiment of the present application, system parameters used for data transmission between the terminal device and the access network device may be different due to different data transmission types. For example, the system parameters corresponding to the control data transmission between the terminal device and the access network device are different from the system parameters corresponding to the service data transmission between the terminal device and the access network device. When the corresponding system parameters are different, in the embodiment of the present application, the first system parameter corresponding to the first set and the second system parameter corresponding to the second set are preferably the same between the terminal device and the access network device. The corresponding system parameter when the data transfer type. For example, the first system parameter and the second system parameter are system parameters corresponding to the service data transmission between the terminal device and the access network device; or the first system parameter and the second system parameter are terminal devices and accesses. The network device performs the corresponding system parameters when controlling data transmission. In the embodiment of the present application, other representations may be used for the first system parameter and the second system parameter, and are not specifically limited.

The embodiment of the present application further provides a data transmission format transmission method, as shown in FIG. 11 . Similarly, the transmission method can be applied to the network architecture shown in FIG. 1 , and the access network device in the method can be applied to 2 is a schematic structural diagram of the terminal device, which can be applied to the structure diagram of FIG. 3. The method provided by the embodiment of the present application is exemplified by the data transmission of the licensed band. However, the method provided by the embodiment of the present application is not limited to the unlicensed band, and the method includes the following steps:

Step 1101 is the same as step 401, and details are not described herein again.

Step 1102: The access network device determines a starting position of the number of time units for transmitting and/or receiving data.

Step 1103: The access network device sends, to the terminal device, first indication information, where the first indication information is used to indicate a starting position of the number of time units for sending and/or receiving data by the access network device.

Step 1104: The terminal device receives the first indication information sent by the access network device.

Similarly, in the method provided by the embodiment of the present application, the labels of the steps 1101 and 1102 do not limit the sequence, that is, the step 1101 may be performed before the step 1102 or may be performed after the step 1102. Likewise, step 1101 can be performed prior to step 1104 or after step 1104.

Step 1105: The terminal device determines, according to the first indication information, a starting position of the number of the time units.

The method of determining the starting position of the number of time units here is the same as the method of the foregoing embodiment, and will not be described again. When the terminal device determines that the first system parameter is used when the terminal device and the access network device perform data transmission, the terminal device determines, according to the second indication information and the first system parameter, The start position of the time unit; or, when the terminal device determines that the terminal device and the access network device use the second system parameter when performing data transmission, the terminal device is according to the second The indication information and the second system parameter determine a starting position of the time unit.

Optionally, the first indication information is further used to indicate the number of time units for the access network device to send and/or receive data, and may be carried in the downlink common control channel.

Similar to the foregoing embodiment, in the transmission method provided by the embodiment of the present application, when the terminal device and the access network device use the first system parameter when performing data transmission, the time unit is used. The number is an element included in the first set; or, when the second system parameter is used when the terminal device and the access network device perform data transmission, the number of the time units is included in the second set element. The first set corresponds to the first system parameter, the second set corresponds to the second system parameter, the first set includes at least one M value, and the M is greater than N, The N is a maximum value in the second set, and the subcarrier spacing corresponding to the second system parameter is smaller than the subcarrier spacing corresponding to the first system parameter. The content of this part is similar to the content of the foregoing embodiment, and details are not described herein again.

Through the method provided in the embodiment of the present application, it can be known that, first, regardless of the system parameters used for data transmission between the access network device and the terminal device, the access network device can use the first indication information to indicate the sending. And / or the number of time units receiving data, which simplifies the indication of data transmission formats (such as SFI). Second, when the subcarrier spacing corresponding to the second system parameter is smaller than the subcarrier spacing corresponding to the first system parameter, the number of time units included in the first set corresponding to the first system parameter is corresponding to the second system parameter. The value of the number of time units included in the two sets satisfies the following relationship: the first set includes at least one M value, the M is greater than N, and N is the maximum value in the second set.

The method provided by the embodiment of the present application is such that the data transmission duration corresponding to the multiple time units indicated by the first indication information is different in different systems regardless of the system parameters used for data transmission between the access network device and the terminal device. Similar results can be achieved in the case of parameters, which is especially applicable to data transmission format indications on unlicensed band resources. For example, when it is determined that the first system parameter SCS used by the terminal device and the access network device for data transmission is 60 kHz, then the maximum length that the first indication information can indicate is 2 ^L × 0.25 ms (continuing the meaning of the parameters in the previous example) ). With the method provided by the embodiment of the present application, the maximum indication duration that the first indication information can indicate is 2 ^L × 1 ms, and the transmission duration is greater than the maximum value 2 ^L × 0.25 ms in the second set corresponding to the second system parameter. Because on the unlicensed band resources, the access network equipment, once bound to the unlicensed band resources, is subject to geographical regulations, and transmits and/or receives data without reassessing the availability of the unlicensed band resources. The transmission duration is limited. The transmission duration is independent of which system parameter the data transmission uses. For example, the transmission duration may be represented by MCOT, that is, the first indication information indicates the number of time units in which the access network device transmits and/or receives data in the MCOT, where The MCOT is no larger than the single data transmission duration that is subject to regulatory restrictions on the unlicensed band resources. For ease of description, in the embodiment of the present application, the limited transmission duration is represented by MCOT, but it should be noted that the limited transmission duration may have other representations. Therefore, with the method provided by the embodiment of the present application, the indication of the data transmission format can also realize that regardless of which system parameter is adopted, the data transmission duration corresponding to the indicated time unit is comparable, thereby simplifying data transmission on the unlicensed band resource. The format indicates the design of the method.

In summary, when the data transmission between the access network device and the terminal device uses different system parameters, the transmission duration corresponding to multiple time units that are comparable or identical may be used to implement an effective data transmission format. Indicates and simplifies the design of the data transfer format indication. In addition, using the embodiment to indicate the data transmission structure on the unlicensed band can also achieve the following effects:

(1) The terminal device may not perform downlink detection during the uplink data transmission period that is not scheduled, thereby achieving the power saving effect.

(2) During the correct downlink data period, the terminal device can average channel state information (CSI) based on the downlink reference signal measurement.

(3) It is convenient for the terminal device to determine the type of listen before talk (LBT). In general, there are two ways for LBT, one is a listening mechanism with random fallback, and the other is a listening mechanism without random backoff, that is, one shot listening mechanism. Generally, in the MCOT, the device can adopt a one shot listening mechanism, that is, if the access network device competes for the use right of the unlicensed band through the LBT, then the terminal device in the MCOT after the access network device competes for the resource The one shot listening mechanism can be used to determine whether the unlicensed band resources that the access network device competes for can continue to be used. After the access network device competes to the unlicensed band resource, the terminal device is notified of the frame structure by using the indication information, and only the frame structure included in the MCOT may be notified. If the terminal device is scheduled to be within the uplink data transmission time range indicated by the indication information, Then the terminal device can determine to adopt a one shot listening mechanism before transmitting the data.

The present application examples also provide a device (eg, an integrated circuit, a wireless device, a circuit module, etc.) for implementing the above method. The means for implementing the power tracker and/or power generator described herein may be a stand-alone device or may be part of a larger device. The device may be (i) a self-contained IC; (ii) a set having one or more 1Cs, which may include a memory IC for storing data and/or instructions; (iii) an RFIC, such as an RF receiver or RF transmitter (iv) an ASIC, such as a mobile station modem; (v) a module that can be embedded in other devices; (vi) a receiver, a cellular phone, a wireless device, a handset, or a mobile unit; (vii) other, etc. Wait.

The method and apparatus provided by the embodiments of the present application may be applied to a terminal device or an access network device (which may be collectively referred to as a wireless device). The terminal device or access network device or wireless device may include a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and a memory (also referred to as main memory). The operating system may be any one or more computer operating systems that implement business processing through a process, such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a Windows operating system. The application layer includes applications such as browsers, contacts, word processing software, and instant messaging software. Moreover, in the embodiment of the present application, the embodiment of the present application does not limit the specific structure of the execution subject of the method, as long as the transmission signal according to the embodiment of the present application can be executed by running a program that records the code of the method of the embodiment of the present application. The method can be communicated. For example, the execution body of the method for wireless communication in the embodiment of the present application may be a terminal device or an access network device, or a function capable of calling a program and executing a program in the terminal device or the access network device. Module.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the embodiments of the present application.

Furthermore, various aspects or features of embodiments of the present application can be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques. The term "article of manufacture" as used in this application encompasses a computer program accessible from any computer-readable device, carrier, or media. For example, a computer readable medium may include, but is not limited to, a magnetic storage device (eg, a hard disk, a floppy disk, or a magnetic tape, etc.), such as a compact disc (CD), a digital versatile disc (DVD). Etc.), smart cards and flash memory devices (eg, erasable programmable read-only memory (EPROM), cards, sticks or key drivers, etc.). Additionally, various storage media described herein can represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" may include, without limitation, a wireless channel and various other mediums capable of storing, containing, and/or carrying instructions and/or data.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL), or wireless (eg, infrared, wireless, microwave, etc.). The computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media. The usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)).

It should be understood that, in various embodiments of the embodiments of the present application, the size of the sequence numbers of the foregoing processes does not mean the order of execution sequence, and the execution order of each process should be determined by its function and internal logic, and should not be applied to this application. The implementation of the embodiments constitutes any limitation.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be 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 may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

The functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, the technical solution of the embodiments of the present application, or the part contributing to the prior art or the part of the technical solution, may be embodied in the form of a software product stored in a storage medium. The instructions include a plurality of instructions for causing a computer device (which may be a personal computer, a server, or an access network device, etc.) to perform all or part of the steps of the methods described in the various embodiments of the embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

The foregoing is only a specific embodiment of the embodiments of the present application, but the scope of protection of the embodiments of the present application is not limited thereto, and any person skilled in the art can easily adopt the technical scope disclosed in the embodiments of the present application. All changes or substitutions are contemplated to be within the scope of the embodiments of the present application.

Claims

A method for transmitting a data transmission format, comprising:

Determining, by the terminal device, a first system parameter or a second system parameter used when the terminal device and the access network device perform data transmission;

Receiving, by the terminal device, first indication information that is sent by the access network device, where the first indication information is used to indicate a number of time units of the access network device that send and/or receive data;

Determining, by the terminal device, the number of the time units according to the first indication information;

Wherein, when the terminal device determines that the first system parameter is used when the terminal device and the access network device perform data transmission, the number of time units is an element included in the first set; or And when the terminal device determines that the second system parameter is used when the terminal device and the access network device perform data transmission, the number of the time units is an element included in the second set;

The first set corresponds to the first system parameter, the second set corresponds to the second system parameter; the first set includes at least one M value, and the M is greater than N, The N is a maximum value in the second set, and the subcarrier spacing corresponding to the second system parameter is smaller than the subcarrier spacing corresponding to the first system parameter.
The method of claim 1 wherein

The first set includes a set {a 1 , a 2 , . . . , a w }, and the second set includes a set {b 1 , b 2 , . . . , b w },
The value is an integer multiple of K, where a i , b i , and w are positive integers, and i is a natural number greater than 0 and less than or equal to w;

Or the ratio between the at least one value in the first set and the at least one value in the second set is an integer multiple of K;

Where K is the ratio between the subcarrier spacing corresponding to the first system parameter and the subcarrier spacing corresponding to the second system parameter.
Method according to claim 1 or 2, characterized in that

When the terminal device determines that the first system parameter is used when the terminal device and the access network device perform data transmission,

Determining, by the terminal device, the number of the time units according to the first indication information, the first system parameter, and the second system parameter;

Or the terminal device determines, according to the first indication information and the second system parameter, a transmission duration corresponding to the number of the time units.
A method according to any one of claims 1 to 3, characterized in that

The first indication information is further used to indicate a starting position of the number of time units;

When the terminal device determines that the first system parameter is used when the terminal device and the access network device perform data transmission, the terminal device is configured according to the first indication information and the first system parameter. Or determining a starting position of the number of time units according to the first indication information and the second system parameter;

Or, when the terminal device determines that the second system parameter is used when the terminal device and the access network device perform data transmission, the terminal device is configured according to the first indication information and the second The system parameters determine the starting position of the number of time units.
A method according to any one of claims 1 to 3, characterized in that

Receiving, by the terminal device, second indication information that is sent by the access network device, where the second indication information is used to indicate a starting position of the number of time units;

When the terminal device determines that the first system parameter is used when the terminal device and the access network device perform data transmission, the terminal device is configured according to the second indication information and the first system parameter. Or determining a starting position of the number of time units according to the first indication information and the second system parameter;

Or, when the terminal device determines that the second system parameter is used when the terminal device and the access network device perform data transmission, the terminal device is configured according to the second indication information and the second A system parameter that determines the starting position of the time unit.
The method according to claim 5, wherein the first indication information and the second indication information are carried in the same downlink control channel.
The method according to any one of claims 1-6, wherein the first indication information is carried in a downlink common control channel.
The method according to any one of claims 1 to 7, wherein the first system parameter comprises a subcarrier spacing SCS and/or a time unit duration; the second system parameter comprises a subcarrier spacing SCS and / or time unit duration.
The method according to any one of claims 1-8, wherein the first indication information is used to indicate the number of time units of the access network device to send and/or receive data, including:

The first indication information is used to indicate the number of time units in which the access network device sends and/or receives data within a preset time range, where the preset time range corresponds to a duration that is not greater than the unlicensed band resource. A single data transfer duration that is subject to regulatory constraints.
A method for transmitting a data transmission format, the method comprising:

The access network device determines the number of time units for transmitting and/or receiving data;

The access network device sends first indication information to the terminal device, where the first indication information is used to indicate the number of time units in which the access network device sends and/or receives data;

Wherein, when the terminal device and the access network device perform data transmission as the first system parameter, the number of time units is an element included in the first set; or, when the terminal device When the second network parameter is used when the access network device performs data transmission, the number of time units is an element included in the second set;

The first set corresponds to the first system parameter, the second set corresponds to the second system parameter; the first set includes at least one M value, and the M is greater than N, The N is a maximum value in the second set, and the subcarrier spacing corresponding to the second system parameter is smaller than the subcarrier spacing corresponding to the first system parameter.
The method of claim 10 wherein:

The first set includes a set {a 1 , a 2 , . . . , a w }, and the second set includes a set {b 1 , b 2 , . . . , b w },
The value is an integer multiple of K, where a i , b i , and w are positive integers, and i is a natural number greater than 0 and less than or equal to w;

Or the ratio between the at least one value in the first set and the at least one value in the second set is an integer multiple of K;

Where K is the ratio between the subcarrier spacing corresponding to the first system parameter and the subcarrier spacing corresponding to the second system parameter.
The method according to claim 10 or 11, wherein the first indication information is further used to indicate a starting position of the number of time units.
A method according to any one of claims 10-12, wherein

The access network device sends second indication information to the terminal device, where the second indication information is used to indicate a starting position of the number of time units.
The method according to claim 13, wherein the first indication information and the second indication information are carried in the same downlink control channel.
The method according to any one of claims 10 to 14, wherein the first indication information is carried in a downlink common control channel.
The method according to any one of claims 10-15, wherein the first system parameter comprises a subcarrier spacing SCS and/or a time unit duration; the second system parameter comprises a subcarrier spacing SCS and / or time unit duration.
The method according to any one of claims 10-16, wherein the first indication information is used to indicate the number of time units of the access network device to send and/or receive data, including:

The first indication information is used to indicate the number of time units in which the access network device sends and/or receives data within a preset time range, where the preset time range corresponds to a duration that is not greater than the unlicensed band resource. A single data transfer duration that is subject to regulatory constraints.
A terminal device, comprising:

a processing unit, configured to determine a first system parameter or a second system parameter used by the terminal device and the access network device to perform data transmission;

a transceiver unit, configured to receive first indication information that is sent by the access network device, where the first indication information is used to indicate a number of time units in which the access network device sends and/or receives data;

The processing unit is further configured to determine, according to the first indication information, the number of the time units;

Wherein, when the processing unit determines that the first system parameter is used when the terminal device and the access network device perform data transmission, the number of time units is an element included in the first set; or And when the processing unit determines that the second system parameter is used when the terminal device and the access network device perform data transmission, the number of the time units is an element included in the second set;

The first set corresponds to the first system parameter, the second set corresponds to the second system parameter; the first set includes at least one M value, and the M is greater than N, The N is a maximum value in the second set, and the subcarrier spacing corresponding to the second system parameter is smaller than the subcarrier spacing corresponding to the first system parameter.
The terminal device according to claim 18, characterized in that

The first set includes a set {a 1 , a 2 , . . . , a w }, and the second set includes a set {b 1 , b 2 , . . . , b w },
The value is an integer multiple of K, where a i , b i , and w are positive integers, and i is a natural number greater than 0 and less than or equal to w;

Or the ratio between the at least one value in the first set and the at least one value in the second set is an integer multiple of K;

Where K is the ratio between the subcarrier spacing corresponding to the first system parameter and the subcarrier spacing corresponding to the second system parameter.
A terminal device according to claim 18 or 19, characterized in that

When the processing unit determines that the first system parameter is used when the terminal device and the access network device perform data transmission,

The processing unit determines the number of the time units according to the first indication information, the first system parameter, and the second system parameter;

Alternatively, the processing unit determines, according to the first indication information and the second system parameter, a transmission duration corresponding to the number of the time units.
A terminal device according to any one of claims 18 to 20, characterized in that

The first indication information is further used to indicate a starting position of the number of time units;

When the processing unit determines that the first system parameter is used when the terminal device and the access network device perform data transmission, the processing unit is configured according to the first indication information and the first system parameter Or determining a starting position of the number of time units according to the first indication information and the second system parameter;

Or, when the processing unit determines that the second system parameter is used when the terminal device and the access network device perform data transmission, the processing unit is configured according to the first indication information and the second The system parameters determine the starting position of the number of time units.
A terminal device according to any one of claims 18 to 20, characterized in that

The transceiver unit receives the second indication information sent by the access network device, where the second indication information is used to indicate a starting position of the number of time units;

When the processing unit determines that the first system parameter is used when the terminal device and the access network device perform data transmission, the processing unit is configured according to the second indication information and the first system parameter Or determining a starting position of the number of time units according to the first indication information and the second system parameter;

Or, when the processing unit determines that the second system parameter is used when the terminal device and the access network device perform data transmission, the processing unit is configured according to the second indication information and the second A system parameter that determines the starting position of the time unit.
The terminal device according to claim 22, wherein the first indication information and the second indication information are carried in the same downlink control channel.
The terminal device according to any one of claims 18 to 23, wherein the first indication information is carried in a downlink common control channel.
The terminal device according to any one of claims 18 to 24, wherein the first system parameter comprises a subcarrier spacing SCS and/or a time unit duration; the second system parameter comprises a subcarrier spacing SCS And / or time unit duration.
The terminal device according to any one of claims 18 to 25, wherein the first indication information is used to indicate the number of time units in which the access network device transmits and/or receives data, including:

The first indication information is used to indicate the number of time units in which the access network device sends and/or receives data within a preset time range, where the preset time range corresponds to a duration that is not greater than the unlicensed band resource. A single data transfer duration that is subject to regulatory constraints.
An access network device, comprising:

a processing unit, configured to determine a number of time units for transmitting and/or receiving data by the transceiver unit;

The transceiver unit is further configured to send the first indication information to the terminal device, where the first indication information is used to indicate the number of time units in which the transceiver unit sends and/or receives data;

Wherein, when the terminal device and the transceiver unit use the first system parameter when performing data transmission, the number of time units is an element included in the first set; or, when the terminal device and the When the transceiver unit performs data transmission for the second system parameter, the number of time units is an element included in the second set;

The first set corresponds to the first system parameter, the second set corresponds to the second system parameter; the first set includes at least one M value, and the M is greater than N, The N is a maximum value in the second set, and the subcarrier spacing corresponding to the second system parameter is smaller than the subcarrier spacing corresponding to the first system parameter.
The access network device of claim 27, wherein

The first set includes a set {a 1 , a 2 , . . . , a w }, and the second set includes a set {b 1 , b 2 , . . . , b w },
The value is an integer multiple of K, where a i , b i , and w are positive integers, and i is a natural number greater than 0 and less than or equal to w;

Or the ratio between the at least one value in the first set and the at least one value in the second set is an integer multiple of K;

Where K is the ratio between the subcarrier spacing corresponding to the first system parameter and the subcarrier spacing corresponding to the second system parameter.
The access network device according to claim 27 or 28, wherein the first indication information is further used to indicate a starting position of the number of time units.
An access network device according to any one of claims 27-29, characterized in that

The transceiver unit sends second indication information to the terminal device, where the second indication information is used to indicate a starting position of the number of time units.
The access network device according to claim 30, wherein the first indication information and the second indication information are carried in the same downlink control channel.
The access network device according to any one of claims 27-31, wherein the first indication information is carried in a downlink common control channel.
The access network device according to any one of claims 27-32, wherein the first system parameter comprises a subcarrier spacing SCS and/or a time unit duration; the second system parameter comprises a subcarrier Interval SCS and/or time unit duration.
The access network device according to any one of claims 27 to 33, wherein the first indication information is used to indicate the number of time units in which the transceiver unit transmits and/or receives data, including:

The first indication information is used to indicate the number of time units in which the transceiver unit transmits and/or receives data within a preset time range, wherein the preset time range corresponds to a duration that is not greater than an unlicensed band resource. Limited to a single data transfer duration subject to regulatory restrictions.
A computer readable storage medium for storing instructions that, when executed on a computer, cause the computer to perform the method of any of claims 1-9.
A computer readable storage medium for storing instructions that, when executed on a computer, cause the computer to perform the method of any of claims 10-17.