WO2018082678A1

WO2018082678A1 - Communications method and communications apparatus

Info

Publication number: WO2018082678A1
Application number: PCT/CN2017/109396
Authority: WO
Inventors: 吕永霞; 马蕊香
Original assignee: 华为技术有限公司
Priority date: 2016-11-04
Filing date: 2017-11-03
Publication date: 2018-05-11
Also published as: CN108023703B; CN108023703A

Abstract

Provided are a communications method and a communications apparatus. A network device determines a first subframe from multiple continuous subframes, each of the multiple continuous subframs comprises an uplink part, an interval part, and a downlink part, the interval part is located between the uplink part and the downlink part, the uplink part of each subframe comprises N continuous symbols, the downlink part of each subframe comprises M continuous symbols, and the interval part of each subframe comprises K continuous symbols; the network device determines an uplink part of the first subframe, and receives uplink signals on some or all symbols in the uplink part of the first subframe; or the network device determines a downlink part of the first subframe, and send downlink signals on some or all symbols in the downlink part of the first subframe. As such, use efficiency of frequency domain resources can be improved.

Description

Communication method and communication device

The present application claims priority to Chinese Patent Application No. Serial No. No. No. No. No. No. No. No. No. No. No. No. No.

Technical field

The present application relates to the field of communications and, more particularly, to communication methods and communication devices.

Background technique

Currently, a Time Division Duplexing (TDD) technology is known. In a communication system using TDD technology, uplink transmission and downlink transmission use the same frequency domain resources in different time periods, and in a communication system. The uplink and downlink switching is performed once every predetermined period of time (for example, 10 milliseconds). With the development of communication technologies, services with high latency requirements, such as Ultra-Reliable and Low Latency Communications (URLLC) services, URLLC services usually require a delay of less than 1 millisecond. For example, if the URLLC service is an uplink service and the downlink transmission is currently being performed, the transmission requirement of the low-latency service cannot be met according to the uplink and downlink handover interval of the prior art.

Summary of the invention

The present application provides a communication method and communication device capable of meeting the service requirements of a low latency service.

In a first aspect, a communication method is provided, where a network device determines a first subframe from consecutive multiple subframes, wherein each of the consecutive plurality of subframes includes an uplink portion, a spacing portion, and a downlink portion, where The interval portion is located between the uplink portion and the downlink portion, and the uplink portion of each subframe includes consecutive N symbols, and the downlink portion of each subframe includes consecutive M symbols, and the interval portion of each subframe includes consecutive K symbols , N≥1, M≥1, K≥1, the uplink portion, the downlink portion, and the interval portion of any two of the consecutive plurality of subframes are arranged in the same order; the network device determines the first subframe Uplink portion, and receiving an uplink signal sent by the terminal device on part or all of the symbols in the uplink portion of the first subframe; or the network device determines a downlink portion of the first subframe, and in the first subframe A downlink signal is transmitted to the terminal device on some or all of the symbols in the downlink portion.

By configuring an uplink portion for carrying an uplink signal, a downlink portion for carrying a downlink signal, and a spacing portion for uplink and downlink handover in each subframe, it is possible to ensure an opportunity for uplink transmission and downlink transmission in each subframe. Moreover, by providing only one interval portion, that is, there is only one chance of uplink and downlink handover, it is possible to reduce waste of frequency domain resources caused by frequent uplink and downlink handover, thereby improving the efficiency of use of frequency domain resources.

With reference to the first aspect, in a first implementation manner of the first aspect, the method further includes: the network device according to the bandwidth of the communication resource in the frequency domain and at least the subcarrier spacing of the communication resource in the frequency domain a parameter determining a minimum value of the number N of symbols included in the uplink portion; or at least one parameter of the network device according to the bandwidth of the communication resource in the frequency domain and the subcarrier spacing of the communication resource in the frequency domain , determining the number of symbols included in the downstream portion The minimum value of the quantity M.

The time-frequency corresponding to the uplink portion in the subframe can be determined by determining the minimum value of the number N or the minimum value of the number M based on the bandwidth of the communication resource in the frequency domain and/or the sub-carrier spacing of the communication resource in the frequency domain. The resource meets the minimum requirement of one uplink transmission (for example, the uplink URLLC service), that is, the minimum time-frequency resource required for one uplink data packet, and can enable the time-frequency resource corresponding to the downlink portion in the subframe to satisfy one downlink transmission. The minimum requirement (for example, the downlink URLLC service) is the minimum time-frequency resource required for a downlink packet. Thereby, the reliability and accuracy of wireless communication can be improved.

With reference to the first aspect and the foregoing implementation manner, in a second implementation manner of the first aspect, the method further includes: a time required by the network device to perform uplink and downlink handover according to the network device or the terminal device, and the network device At least one of a coverage of a cell in which the terminal device is located, a subcarrier spacing of the communication resource in the frequency domain, and a length of a cyclic prefix CP in a signal transmitted between the network device and the terminal device , determining the number K of symbols included in the interval portion.

The time required by the network device to perform uplink and downlink handover according to the network device or the terminal device, the coverage of the network device and the cell in which the terminal device is located, and the subcarrier spacing of the communication resource in the frequency domain, Determining the number K of at least one of the lengths of the cyclic prefix CP in the signal transmitted between the network device and the terminal device, so that the duration of the interval portion in the subframe can be longer than the time required for the uplink and downlink handover Under the premise, try to reduce the length of the interval. Thereby, the use efficiency of the frequency domain resources can be further improved.

With reference to the first aspect and the foregoing implementation manner, in a third implementation manner of the first aspect, the method further includes: the ratio of the uplink service to the downlink service of the network device according to the network device and the cell in which the terminal device is located The ratio of the number N of symbols included in the upstream portion to the number M included in the downstream portion is determined.

By determining the ratio of the number N to the number M based on the ratio of the uplink service to the downlink service in the cell, the structure of the subframe can be corresponding to the specific transmission requirement in the cell (ie, the uplink and downlink data volume requirement), thereby being able to further improve The use efficiency of the frequency domain resources improves the practicability of the embodiments of the present application.

With reference to the first aspect and the foregoing implementation manner, in a fourth implementation manner of the first aspect, the method further includes: the network device sending the first indication information to the terminal device, where the first indication information is used to indicate the interval The number K of symbols included in the section.

With reference to the first aspect and the foregoing implementation manner, in a fifth implementation manner of the first aspect, the method further includes: sending, by the network device, second indication information to the terminal device, where the second indication information is used to indicate at least A type of information: a ratio of the number N of symbols included in the uplink portion to the number M of symbols included in the downlink portion, the number N of symbols included in the uplink portion, and the number M of symbols included in the downlink portion.

By causing the network device to determine the structure of the subframe and then transmitting the indication information of the subframe structure to the terminal device, it is possible to reduce the processing load caused by the terminal device by determining the structure of the subframe.

With reference to the first aspect and the foregoing implementation manner, in a sixth implementation manner of the first aspect, each of the multiple subframes includes at least two time units, and each time unit includes at least one symbol, the at least two The time units include P first time units for uplink transmission and Q second time units for downlink transmission, P≥1, Q≥1, and the symbols included in the uplink part belong to the P first time Units, the symbols included in the downlink portion belong to the Q second time units, the symbols included in the interval portion belong to the P first time units, or the symbols included in the interval portion belong to the Q second time units.

With reference to the first aspect and the foregoing implementation manner, in a seventh implementation manner of the first aspect, the method further includes: The network device determines a first subframe configuration manner from at least two subframe configuration manners, where the at least two subframe configuration manners are in one-to-one correspondence with at least two parameter combinations, and each parameter combination includes a bandwidth value and a subcarrier interval. The value of each seed frame configuration mode is used to indicate the number of symbols included in one uplink part, the number of symbols included in one downlink part, and the number of symbols included in one interval part, and the first subframe configuration manner is a first parameter combination corresponding to a subframe configuration manner, where the first parameter combination is a parameter set of a value of a bandwidth of the communication resource in a frequency domain and a value of a subcarrier spacing of the communication resource in a frequency domain; and the parameter set The determining, by the network device, the uplink part of the first subframe includes: determining, by the network device, the uplink part of the first subframe according to the first subframe configuration manner; or determining, by the network device, that the downlink part of the second subframe includes: the network The device determines an uplink portion of the second subframe according to the first subframe configuration manner.

By pre-storing a plurality of mapping relationships between the parameter groups for determining the subframe structure and the plurality of subframe structures in the network device, the network device can determine the current system state according to the parameter group to which the currently used parameters belong. Corresponding subframe structure, thereby improving the flexibility, practicability and wireless communication performance of the embodiments of the present application.

With reference to the first aspect and the foregoing implementation manner, in the eighth implementation manner of the first aspect, when the subcarrier spacing of the frequency domain resources corresponding to the consecutive multiple subframes is 30 kHz kHz, if the continuous multiple is described If the bandwidth of the frequency domain resource corresponding to the subframe is greater than or equal to 10 MHz and less than 20 MHz, the minimum value of the number of symbols N included in the uplink portion is 14, or the minimum value of the number of symbols M included in the downlink portion is 14; if the bandwidth of the frequency domain resource corresponding to the consecutive multiple subframes is greater than or equal to 20 MHz, the minimum value of the number of symbols N included in the uplink portion is 7, or the number of symbols included in the downlink portion is M. The minimum value is 7.

With reference to the first aspect and the foregoing implementation manner, in the ninth implementation manner of the first aspect, when the subcarrier spacing of the frequency domain resources corresponding to the consecutive multiple subframes is 60 kHz, if the consecutive multiple subframes correspond to If the bandwidth of the frequency domain resource is greater than or equal to 10 MHz MHz and less than 20 MHz, the minimum value of the number N of symbols included in the uplink portion is 28, or the minimum value of the number of symbols M included in the downlink portion is 28; If the bandwidth of the frequency domain resource corresponding to the consecutive multiple subframes is greater than or equal to 20 MHz, the minimum value of the number of symbols N included in the uplink portion is 14, or the minimum value of the number of symbols M included in the downlink portion is 14.

With reference to the first aspect and the foregoing implementation manner, in a tenth implementation manner of the first aspect, when the subcarrier spacing of the frequency domain resources corresponding to the consecutive multiple subframes is 15 kHz, if the consecutive multiple subframes are corresponding to If the bandwidth of the frequency domain resource is greater than or equal to 10 MHz MHz and less than 20 MHz, the minimum value of the number N of symbols included in the uplink portion is 7, or the minimum value of the number of symbols M included in the downlink portion is 7; If the bandwidth of the frequency domain resource corresponding to the consecutive multiple subframes is greater than or equal to 20 MHz, the minimum value of the number of symbols N included in the uplink portion is 3 or 4, or the minimum number of symbols included in the downlink portion is minimum. The value is 3 or 4.

With reference to the first aspect and the foregoing implementation manner, in the eleventh implementation manner of the first aspect, when the subcarrier spacing of the frequency domain resources corresponding to the consecutive multiple subframes is 30 kHz, if the terminal device If the coverage of the cell in which the cell is located is 5 km km, the interval portion includes the value of the symbol number K; if the coverage of the cell in which the terminal device is located is 10 km km, the symbol included in the interval portion The value of the number K is 2; if the coverage of the cell in which the terminal device is located is 15 km km, the interval portion includes the value K of the symbol number K; if the coverage of the cell in which the terminal device is located is 20 thousand m km, then the interval portion includes the value 4 of the symbol number K.

With reference to the first aspect and the foregoing implementation manner, in the twelfth implementation manner of the first aspect, when the subcarrier spacing of the frequency domain resources corresponding to the consecutive multiple subframes is 60 kHz, if the terminal device is located If the coverage of the cell is 2.5 km km, the interval portion includes the value of the symbol number K; if the cell in which the terminal device is located The coverage is 5 km km, and the interval portion includes the value 2 of the symbol number K.

With reference to the first aspect and the foregoing implementation manner, in the thirteenth implementation manner of the first aspect, when the subcarrier spacing of the frequency domain resources corresponding to the consecutive multiple subframes is 15 kHz, if the terminal device is located The coverage of the cell is 10 km km, and the interval portion includes the value 1 of the symbol number K.

With reference to the first aspect and the foregoing implementation manner, in the fourteenth implementation manner of the first aspect, the value of the number of symbols included in the uplink portion between the plurality of second subframes in the consecutive multiple subframes The same, and the value of the number of symbols M included in the downlink portion is the same, and the value of the number of symbols K included in the interval portion is the same, and the second subframe is a subframe other than the third subframe among the plurality of subframes The third subframe is a subframe carrying any one of a physical broadcast channel, a synchronization signal, and a random access channel.

In a second aspect, a method for receiving a signal is provided, the method comprising: determining, by a terminal device, a first subframe from a plurality of consecutive subframes, wherein each of the consecutive plurality of subframes includes an uplink portion and an interval a portion and a downlink portion, the interval portion being located between the uplink portion and the downlink portion, the uplink portion of each subframe includes consecutive N symbols, and the downlink portion of each subframe includes consecutive M symbols, and the interval portion of each subframe Include consecutive K symbols, N≥1, M≥1, K≥1, and the uplink, downlink, and interval portions of any two of the consecutive plurality of subframes are arranged in the same order; the terminal device Determining an uplink portion of the first subframe, and transmitting an uplink signal to the network device on some or all of the symbols in the uplink portion of the first subframe; or the terminal device determines a downlink portion of the first subframe, and A downlink signal transmitted by the network device is received on part or all of the symbols in the downlink portion of the first subframe.

With reference to the second aspect, in the first implementation manner of the second aspect, the minimum value of the number N of symbols included in the uplink portion and/or the minimum value of the number M of symbols included in the downlink portion is based on at least one parameter below Determined: the bandwidth of the communication resource in the frequency domain, and the subcarrier spacing of the communication resource in the frequency domain.

With reference to the second aspect and the foregoing implementation manner, in the second implementation manner of the second aspect, the number K of symbols included in the interval portion is determined according to at least one parameter: the network device or the terminal device performs uplink and downlink The time required for handover, the coverage of the network device and the cell in which the terminal device is located, the subcarrier spacing of the communication resource in the frequency domain, the cyclic prefix in the signal transmitted between the network device and the terminal device The length of the CP.

With reference to the second aspect and the foregoing implementation manner, in a third implementation manner of the second aspect, the ratio of the number N of symbols included in the uplink part and the quantity M included in the downlink part is according to the network device and the terminal device. The proportion of uplink traffic and downlink traffic in the cell in which it is located is determined.

With reference to the second aspect and the foregoing implementation manner, in a fourth implementation manner of the second aspect, the method further includes: receiving, by the terminal device, first indication information that is sent by the network device, where the first indication information is used to indicate the interval And determining, by the terminal device, the uplink portion of the first subframe, the terminal device determining, according to the first indication information, an uplink portion of the first subframe; or the terminal device determining the second subframe The uplink part includes: the terminal device determines an uplink part of the second subframe according to the first indication information.

With reference to the second aspect and the foregoing implementation manner, in a fifth implementation manner of the second aspect, the method further includes: receiving, by the terminal device, second indication information that is sent by the network device, where the second indication information is used to indicate at least A type of information: a ratio of the number N of symbols included in the uplink portion to the number M of symbols included in the downlink portion, the number N of symbols included in the uplink portion, the number M of symbols included in the downlink portion, and the terminal device Determining the uplink part of the first subframe includes: determining, by the terminal device, the uplink part of the first subframe according to the second indication information; or determining, by the terminal device, that the uplink part of the second subframe includes: the terminal device according to the Two indication information, determining the second child The upstream portion of the frame.

With reference to the second aspect and the foregoing implementation manner, in a sixth implementation manner of the second aspect, each of the multiple subframes includes at least two time units, and each time unit includes at least one symbol, the at least two The time unit includes P first time units for uplink transmission and Q second time units for downlink transmission, P≥1, Q≥1, and the symbols included in the uplink part belong to the P first time units. The symbol included in the downlink part belongs to the Q second time units, the symbols included in the interval part belong to the P first time units, or the symbols included in the interval part belong to the Q second time units.

With reference to the second aspect and the foregoing implementation manner, in a seventh implementation manner of the second aspect, the method further includes: determining, by the terminal device, the first subframe configuration manner from the at least two subframe configuration manners, the at least two The seed frame configuration mode corresponds to at least two parameter combinations, and each parameter combination includes a value of a bandwidth and a value of a subcarrier interval, and each seed frame configuration mode is used to indicate the number of symbols included in an uplink part, and The number of symbols included in the downlink part and the number of symbols included in the interval part, the first subframe configuration manner is a subframe configuration manner corresponding to the first parameter combination, and the first parameter combination is the frequency of the communication resource a parameter set of a value of a bandwidth on the domain and a value of a subcarrier spacing of the communication resource in the frequency domain; and determining, by the terminal device, an uplink portion of the first subframe, the terminal device configuring according to the first subframe a method, the uplink part of the first subframe is determined; or the terminal device determines that the downlink part of the second subframe includes: the terminal device is configured according to the first sub Configuration, determines that the uplink portion of the second subframe.

With reference to the second aspect and the foregoing implementation manner, in the eighth implementation manner of the second aspect, when the subcarrier spacing of the frequency domain resources corresponding to the consecutive multiple subframes is 30 kHz kHz, if the continuous multiple is described If the bandwidth of the frequency domain resource corresponding to the subframe is greater than or equal to 10 MHz and less than 20 MHz, the minimum value of the number of symbols N included in the uplink portion is 14, or the minimum value of the number of symbols M included in the downlink portion is 14; if the bandwidth of the frequency domain resource corresponding to the consecutive multiple subframes is greater than or equal to 20 MHz, the minimum value of the number of symbols N included in the uplink portion is 7, or the number of symbols included in the downlink portion is M. The minimum value is 7.

With reference to the second aspect and the foregoing implementation manner, in a ninth implementation manner of the second aspect, when the subcarrier spacing of the frequency domain resources corresponding to the consecutive multiple subframes is 60 kHz, if the consecutive multiple subframes correspond to If the bandwidth of the frequency domain resource is greater than or equal to 10 MHz MHz and less than 20 MHz, the minimum value of the number N of symbols included in the uplink portion is 28, or the minimum value of the number of symbols M included in the downlink portion is 28; If the bandwidth of the frequency domain resource corresponding to the consecutive multiple subframes is greater than or equal to 20 MHz, the minimum value of the number of symbols N included in the uplink portion is 14, or the minimum value of the number of symbols M included in the downlink portion is 14.

With reference to the second aspect and the foregoing implementation manner, in the tenth implementation manner of the second aspect, when the subcarrier spacing of the frequency domain resources corresponding to the consecutive multiple subframes is 15 kHz, if the consecutive multiple subframes correspond to If the bandwidth of the frequency domain resource is greater than or equal to 10 MHz MHz and less than 20 MHz, the minimum value of the number N of symbols included in the uplink portion is 7, or the minimum value of the number of symbols M included in the downlink portion is 7; If the bandwidth of the frequency domain resource corresponding to the consecutive multiple subframes is greater than or equal to 20 MHz, the minimum value of the number of symbols N included in the uplink portion is 3 or 4, or the minimum number of symbols included in the downlink portion is minimum. The value is 3 or 4.

With reference to the second aspect and the foregoing implementation manner, in the eleventh implementation manner of the second aspect, when the subcarrier spacing of the frequency domain resources corresponding to the consecutive multiple subframes is 30 kHz, if the terminal device If the coverage of the cell in which the cell is located is 5 km km, the interval portion includes the value of the symbol number K; if the coverage of the cell in which the terminal device is located is 10 km km, the symbol included in the interval portion a value of K; if the terminal device If the coverage of the cell is 15 km km, the interval portion includes the value K of the symbol number K; if the coverage of the cell in which the terminal device is located is 20 km km, the number of symbols included in the interval portion The value of K is 4.

With reference to the second aspect and the foregoing implementation manner, in the twelfth implementation manner of the second aspect, when the subcarrier spacing of the frequency domain resources corresponding to the consecutive multiple subframes is 60 kHz, if the terminal device is located If the coverage of the cell is 2.5 km km, the interval portion includes the value of the symbol number K; if the coverage of the cell in which the terminal device is located is 5 km km, the interval portion includes the number of symbols K. The value is 2.

With reference to the second aspect and the foregoing implementation manner, in the thirteenth implementation manner of the second aspect, when the subcarrier spacing of the frequency domain resources corresponding to the consecutive multiple subframes is 15 kHz, if the terminal device is located The coverage of the cell is 10 km km, and the interval portion includes the value 1 of the symbol number K.

With reference to the second aspect and the foregoing implementation manner, in the fourteenth implementation manner of the second aspect, the value of the number of symbols included in the uplink portion between the plurality of second subframes in the consecutive multiple subframes The same, and the value of the number of symbols M included in the downlink portion is the same, and the value of the number of symbols K included in the interval portion is the same, and the second subframe is a subframe other than the third subframe among the plurality of subframes The third subframe is a subframe carrying any one of a physical broadcast channel, a synchronization signal, and a random access channel.

In a third aspect, a communication device is provided for performing the method of any of the first aspect and the first aspect, the communication device may comprise any one of the first aspect and the first aspect A unit of a method in a possible implementation.

In a fourth aspect, a communication device is provided for performing the method of any one of the second aspect and the second aspect, in particular, the communication device can include the second aspect and the second aspect A unit of any of the possible implementations.

In a fifth aspect, a communication device is provided, comprising a memory and a processor for storing a computer program for calling and running the computer program from a memory, such that the communication device performs the first aspect and the first aspect Any of the possible ways to achieve this.

In a sixth aspect, a communication device is provided, comprising a memory and a processor for storing a computer program for calling and running the computer program from a memory, such that the communication device performs the second aspect and the second aspect Any of the possible ways to achieve this.

In a seventh aspect, a computer program product is provided, the computer program product comprising: computer program code, when the computer program code is received by a communication device (eg, a network device or a terminal device), a processing unit, a sending unit When the receiver, the processor, and the transmitter are in operation, causing the communication device (eg, the network device or the terminal device) to perform the method of any of the first aspect and the first aspect, or perform the second aspect and the A method in any of the possible implementations of the two aspects.

In an eighth aspect, a computer readable storage medium is provided, the computer readable storage medium storing a program causing a communication device (eg, a network device or a terminal device) to perform the first aspect and the first aspect A method in a possible implementation, or a method in any of the possible implementations of the second aspect and the second aspect.

DRAWINGS

1 is a schematic architectural diagram of an example of a communication system using a method and apparatus for transmitting or receiving a channel of an embodiment of the present application.

FIG. 2 is a schematic diagram showing an example of a subframe structure in the embodiment of the present application.

FIG. 3 is a schematic diagram of another example of a subframe structure in the embodiment of the present application.

FIG. 4 is a schematic diagram of still another example of a subframe structure in the embodiment of the present application.

FIG. 5 is a schematic diagram of still another example of a subframe structure in the embodiment of the present application.

FIG. 6 is a schematic interaction diagram of a method of transmitting or receiving a signal according to an embodiment of the present application.

FIG. 7 is a schematic block diagram of an apparatus for transmitting a signal according to an embodiment of the present application.

FIG. 8 is a schematic block diagram of an apparatus for receiving a signal according to an embodiment of the present application.

detailed description

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

The terms "component," "module," "system," and the like, as used in this specification, are used to mean a computer-related entity, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component can be, but is not limited to being, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of illustration, both an application running on a computing device and a computing device can be a component. One or more components can reside within a process and/or execution thread, and the components can be located on one computer and/or distributed between two or more computers. Moreover, these components can execute from various computer readable media having various data structures stored thereon. A component may, for example, be based on signals having one or more data packets (eg, data from two components interacting with another component between the local system, the distributed system, and/or the network, such as the Internet interacting with other systems) Communicate through local and/or remote processes.

It should be understood that the technical solution of the present application can be applied to various communication systems, for example, a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, and a wideband code division. Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) System, Universal Mobile Telecommunication System (UMTS) or next generation communication system.

In general, traditional communication systems support a limited number of connections and are easy to implement. However, next-generation mobile communication systems will support not only traditional communications, but also device-to-device (D2D) communications, for example, machines. Machine to Machine (M2M) communication, Machine Type Communication (MTC), and Vehicle to Vehicle (V2V) communication, Ultra-Reliable and Low Latency Communications (URLLC) Services, enhanced mobile broadband (eMBB) services, Multimedia Broadcast Multicast Service (MBMS) services, and positioning services.

Among them, the URLLC service is generally an emergency service, which requires high speed reliability and transmission delay, and generally requires 99.999% transmission reliability within 1 ms. In order to ensure the high reliability and ultra-low latency service requirements of the URLLC service, the system needs to allocate enough frequency domain resources for the URLLC service to transmit the URLLC service, but the URLLC service is generally a burst emergency service, and the service data packet is generally They are relatively small. When no service arrives, the resources allocated for the URLLC will cause a certain waste of resources. According to the method for transmitting a signal according to the embodiment of the present application, waste of frequency domain resources caused by the appearance of the URLLC service can be effectively solved.

Optionally, the network device is a base station, and the terminal device is a user equipment.

The present application describes various embodiments in connection with a terminal device. A terminal device can also be called a user device (User Equipment, UE) user equipment, access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user equipment. The terminal device may be a station (STAION, ST) in a Wireless Local Area Networks (WLAN), and may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, or a wireless local loop (Wireless Local) Loop, WLL) station, Personal Digital Assistant ("PDA") device, handheld device with wireless communication capabilities, computing device or other processing device connected to a wireless modem, in-vehicle device, wearable device, and next generation A communication system, for example, a terminal device in a fifth-generation (5G) network or a terminal device in a future evolved Public Land Mobile Network (PLMN) network.

By way of example and not limitation, in the embodiment of the present application, the terminal device may also be a wearable device. A wearable device, which can also be called a wearable smart device, is a general term for applying wearable technology to intelligently design and wear wearable devices such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are more than just a hardware device, but they also implement powerful functions through software support, data interaction, and cloud interaction. Generalized wearable smart devices include full-featured, large-size, non-reliable smartphones for full or partial functions, such as smart watches or smart glasses, and focus on only one type of application, and need to work with other devices such as smartphones. Use, such as various smart bracelets for smart signs monitoring, smart jewelry, etc.

Moreover, the present application describes various embodiments in connection with a network device. The network device may be a device for communicating with the mobile device, such as a network device, and the network device may be an access point (APCESS POINT, AP) in the WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA, or may be A base station (NodeB, NB) in WCDMA may also be an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or an access point, or an in-vehicle device, a wearable device, and a network in a future 5G network. A device or a network device in a future evolved PLMN network.

In addition, in the embodiment of the present application, the terminal device may perform wireless communication in a cell, where the cell may be a cell corresponding to the network device (for example, a base station), and the cell may belong to the macro base station, or may belong to a small cell (small cell). The base station, where the small cell may include: a metro cell, a micro cell, a pico cell, a femto cell, etc., these small cells have small coverage and low transmission power. The features are suitable for providing high-speed data transmission services.

In addition, multiple carriers can work at the same frequency on the carrier in the LTE system. In some special scenarios, the concept of the carrier and the cell in the LTE system can be considered to be equivalent. For example, in a carrier aggregation (CA) scenario, when a secondary carrier is configured for a UE, the carrier index of the secondary carrier and the cell identifier (Cell ID) of the secondary cell operating in the secondary carrier are simultaneously carried. In this case, the concept of the carrier and the cell can be considered to be equivalent, for example, the UE accessing one carrier and accessing one cell are equivalent.

The method and apparatus provided by the embodiments of the present application may be applied to a terminal device or a network device, where the terminal device or the network device includes 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 contains browsing Applications such as address book, address book, word processing software, and instant messaging software. Further, in the embodiment of the present application, the specific structure of the execution subject of the method for transmitting a signal is not particularly limited as long as the program of the code for recording the method of transmitting the signal of the embodiment of the present application can be executed. The method for transmitting a signal of the embodiment may be used for communication. For example, the execution body of the method for transmitting feedback information in the embodiment of the present application may be a terminal device or a network device, or may be a terminal device or a network device capable of calling a program and executing The functional module of the program.

Furthermore, various aspects or features 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, the 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 (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.

1 is a schematic diagram of a communication system using the transmission information of the present application. As shown in FIG. 1, the communication system 100 includes a network device 102 that can include multiple antennas, such as

antennas

104, 106, 108, 110, 112, and 114. Additionally, network device 102 may additionally include a transmitter chain and a receiver chain, as will be understood by those of ordinary skill in the art, which may include multiple components related to signal transmission and reception (eg, processor, modulator, multiplexer) , demodulator, demultiplexer or antenna, etc.).

Network device 102 can communicate with a plurality of terminal devices, such as terminal device 116 and terminal device 122. However, it will be appreciated that network device 102 can communicate with any number of terminal devices similar to

terminal device

116 or 122.

Terminal devices

116 and 122 may be, for example, cellular telephones, smart phones, portable computers, handheld communication devices, handheld computing devices, satellite radios, global positioning systems, PDAs, and/or any other suitable for communicating over wireless communication system 100. device.

As shown in FIG. 1, terminal device 116 is in communication with antennas 112 and 114, wherein antennas 112 and 114 transmit information to terminal device 116 over forward link 118 and receive information from terminal device 116 over reverse link 120. In addition, terminal device 122 is in communication with

antennas

104 and 106, wherein

antennas

104 and 106 transmit information to terminal device 122 over forward link 124 and receive information from terminal device 122 over reverse link 126.

For example, in a Time Division Duplex (TDD) system and a Full Duplex system, the forward link 118 and the reverse link 120 can use a common frequency band, a forward link 124 and a reverse link. Path 126 can use a common frequency band.

Each antenna (or set of antennas consisting of multiple antennas) and/or regions designed for communication is referred to as a sector of network device 102. For example, the antenna group can be designed to communicate with terminal devices in sectors of the network device 102 coverage area. In the process in which network device 102 communicates with

terminal devices

116 and 122 via

forward links

118 and 124, respectively, the transmit antenna of network device 102 may utilize beamforming to improve the signal to noise ratio of

forward links

118 and 124. In addition, when the network device 102 uses beamforming to transmit signals to the randomly dispersed

terminal devices

116 and 122 in the relevant coverage area, the network device 102 uses a single antenna to transmit signals to all of its terminal devices. Mobile devices are subject to less interference.

At a given time, network device 102, terminal device 116 or terminal device 122 may be a wireless communication transmitting device And/or wireless communication receiving device. When transmitting data, the wireless communication transmitting device can encode the data for transmission. In particular, the wireless communication transmitting device may acquire (eg, generate, receive from other communication devices, or store in memory, etc.) a certain number of data bits to be transmitted over the channel to the wireless communication receiving device. Such data bits may be included in a transport block (or multiple transport blocks) of data that may be segmented to produce multiple code blocks.

In addition, the communication system 100 can be a PLMN network or a D2D network or an M2M network or other network. FIG. 1 is only a simplified schematic diagram of an example, and other network devices may also be included in the network, which are not shown in FIG.

In the embodiment of the present application, the deployment scenario of the communication system 100 may be, for example, an indoor hotspot scene, a dense urban scene, a suburban scene, a urban macro coverage scene, a high-speed rail scene, or the like.

Next, communication resources (specifically, time-frequency resources) used for wireless communication used in the communication system 100 will be described in detail.

A. In the frequency domain

In the embodiment of the present application, the communication resource used by the communication system may be any frequency range within 100 GHz in the frequency domain.

In addition, in the embodiment of the present application, the communication resource (for example, the time-frequency resource) used by the communication system 100 may be an authorized time-frequency resource, or may be an unlicensed time-frequency resource, or in the embodiment of the present application. Each communication device (for example, a network device or a terminal device) in the communication system 100 may communicate using time-frequency resources based on an unlicensed transmission scheme, or may communicate using time-frequency resources based on an authorization manner, which is not specifically limited in the present application.

The unlicensed time-frequency resource means that no communication is required, and each communication device can share the resources included in the unlicensed time-frequency domain. Resource sharing on the unlicensed band means that the use of a specific spectrum only specifies the limits of the transmit power and out-of-band leakage to ensure that the basic coexistence requirements are met between multiple devices sharing the band. The licensed band resources can achieve the purpose of network capacity shunting, but need to comply with the regulatory requirements of the unlicensed band resources in different geographies and different spectrums. These requirements are usually designed to protect public systems such as radar, as well as to ensure that multiple systems do not cause harmful effects and fair coexistence with each other, including emission power limits, out-of-band leak indicators, indoor and outdoor use restrictions, and areas. There are also some additional coexistence strategies and so on. For example, each communication device can adopt a contention mode or a monitoring mode, for example, a time-frequency resource used in a manner specified by Listening Before Talk (LBT).

In order to solve a large number of MTC-type services in the future network, and to meet low-latency, high-reliability service transmission, a scheme for unauthorized transmission is proposed. Unauthorized transmission of English can be expressed as Grant Free. The unlicensed transmission here can be for uplink data transmission. An unauthorized transfer can be understood as any one of the following meanings, or multiple meanings, or a combination of some of the various technical meanings or other similar meanings:

The unlicensed transmission may be: the network device pre-allocates and informs the terminal device of multiple transmission resources; when the terminal device has an uplink data transmission requirement, select at least one transmission resource from the plurality of transmission resources pre-allocated by the network device, and use the selected transmission. The resource sends uplink data; the network device detects uplink data sent by the terminal device on one or more of the pre-assigned multiple transmission resources. The detection may be blind detection, or may be performed according to one of the control domains in the uplink data, or may be detected in other manners.

The unlicensed transmission may be: the network device pre-allocates and informs the terminal device of multiple transmission resources, so that when the terminal device has an uplink data transmission requirement, at least one transmission resource is selected from a plurality of transmission resources pre-allocated by the network device, and the selected one is used. The transmission resource sends uplink data.

The unlicensed transmission may be: obtaining information of a plurality of pre-assigned transmission resources, when there is an uplink data transmission requirement, Selecting at least one transmission resource from the plurality of transmission resources, and transmitting uplink data using the selected transmission resource. The method of obtaining can be obtained from a network device.

The unlicensed transmission may be a method for realizing uplink data transmission of the terminal device without dynamic scheduling of the network device. The dynamic scheduling may refer to the network device indicating the transmission resource by signaling for each uplink data transmission of the terminal device. A scheduling method. Optionally, implementing uplink data transmission of the terminal device may be understood as allowing data of two or more terminal devices to perform uplink data transmission on the same time-frequency resource. Optionally, the transmission resource may be a transmission resource of one or more transmission time units after the moment when the terminal device receives the signaling. A transmission time unit can refer to the minimum time unit of a transmission, such as TTI.

Unauthorized transmission can mean that the terminal device performs uplink data transmission without requiring authorization of the network device. The authorization may be performed by the terminal device sending an uplink scheduling request to the network device. After receiving the scheduling request, the network device sends an uplink grant to the terminal device, where the uplink grant indicates the uplink transmission resource allocated to the terminal device.

The unlicensed transmission may refer to: a contention transmission mode, which may specifically mean that multiple terminals simultaneously perform uplink data transmission on the same time-frequency resources allocated in advance without the base station performing authorization.

The data may be included in service data or signaling data.

The blind detection can be understood as the detection of data that may arrive without predicting whether or not data has arrived. The blind detection can also be understood as detection without explicit signaling indication.

In the embodiment of the present application, the basic time unit of the unlicensed transmission may be a Transmission Time Interval (TTI). It should be noted that the unlicensed transmission may include downlink data channel reception or uplink data channel transmission with a TTI length of 1 ms or a TTI length of less than 1 ms.

By way of example and not limitation, in the embodiment of the present application, the unlicensed spectrum resource may include a frequency band near 5 GHz, or a frequency band near 2.4 GHz, or a frequency band near 3.5 GHz, or a frequency band near 60 GHz.

By way of example and not limitation, for example, the communication system 100 may employ a Licensed-Assisted Access Using LTE (LAA-LTE) technology on an unlicensed carrier, or may support the independent deployment of the communication system in an unlicensed band. Technology such as Standalone LTE over unlicensed spectrum, or LTE-U (LTE Advanced in Unlicensed Spectrums, LTE-U) technology, that is, the communication system 100 can independently deploy the LTE system to an unlicensed band, and thus in the unlicensed band. Communication is completed using the LTE air interface protocol, which does not include licensed bands. The LTE system deployed in the unlicensed band can utilize technologies such as centralized scheduling, interference coordination, and Hybrid Automatic Repeat reQuest (HARQ), and access technologies such as Wi-Fi, which has better robustness. For higher spectral efficiency, greater coverage and a better user experience.

Moreover, by way of example and not limitation, in the embodiment of the present application, the communication system 100 may employ, for example, Licensed-Assisted Access (LAA), Dual Connectivity (DC), and unauthorized access ( Standalone) technology. The LAA includes the configuration and structure of Carrier Aggregation (CA) in the existing LTE system, and configures carriers (authorized carriers) on the carrier-licensed band to perform communication on the basis of multiple unlicensed bands. Carrier (unlicensed carrier) and assisted by the licensed carrier for communication using the unlicensed carrier. That is, the LTE device can use the authorized carrier as the primary component carrier (PCC) or the primary cell (PCell) in the CA mode, and use the unlicensed carrier as the secondary component carrier (SCC). Or secondary cell (Secondary Cell, SCell). Dual connectivity DC technology includes passing licensed and unlicensed carriers through non-CA (or non-ideal backhaul) The technology used in conjunction with the method, or a technology that combines multiple unlicensed carriers in a non-CA manner. LTE devices can also be deployed directly on unlicensed carriers through independent deployment.

In addition, in the embodiment of the present application, each communication device in the communication system 100 can also perform wireless communication using the licensed spectrum resource, that is, the communication system 100 in the embodiment of the present application is a communication system capable of using the licensed frequency band.

That is, in the embodiment of the present application, the transmission of data may be based on base station scheduling, and the basic time unit of scheduling may be one TTI. The specific scheduling procedure is that the base station sends a control channel, for example, a Physical Downlink Control Channel (PDCCH) or an Enhanced Physical Downlink Control Channel (EPDCCH), and the control channel can carry different downlink control. Scheduling information for scheduling a Physical Downlink Shared Channel (PDSCH) or a Physical Uplink Shared Channel (PUSCH) in the Downlink Control Information (DCI) format, where the scheduling information includes, for example, resource allocation information. Control information such as modulation and coding methods. The terminal device detects the control channel in the subframe, and performs downlink data channel reception or uplink data channel transmission according to the detected scheduling information carried in the control channel.

Authorized time-frequency resources generally require time-frequency resources that can be used by national or local wireless committees for approval. Different systems, such as LTE systems and WiFi systems, or systems included by different operators may not share authorized time-frequency resources.

Additionally, in some embodiments of the present application, the network device can provide one or more unlicensed cells (or may also be referred to as an unlicensed carrier), and one or more authorized cells (or may also be referred to as an authorized Carrier).

B. In the time domain

In the embodiment of the present application, the communication resource (for example, the time-frequency resource) used by the communication system 100 can be divided into multiple time units in the time domain. In the embodiment of the present application, the time unit may be Refers to the length of an independent decoded transmission in a wireless link. In the embodiment of the present application, the time unit may refer to a basic unit of time governed by radio resource management (eg, resource scheduling, etc.).

By way of example and not limitation, in the embodiment of the present application, the length of the time unit may be any length between 1 symbol (symbol) and 1 time slot (including 7 symbols), or the length of the time unit may also be A combination of at least two symbols of different lengths from 1 to 7 symbols.

In addition, the symbol mentioned above may be an Orthogonal Frequency Division Multiplexing (OFDM) symbol or a Single Carrier-Frequency Division Multiple Access (SC-FDMA) symbol in an LTE system. It can also be a symbol in other communication systems.

Moreover, in the embodiment of the present application, when the subcarrier spacing of the frequency domain resources used by the communication system 100 is different, the length of each symbol is also different.

Situation 1

In the case where the subcarrier spacing is 30 kilohertz (kHz), each subframe (1 ms) includes 28 symbols.

In this case, for example, each subframe may include 4 time units, and each time unit may have a length of 7 symbols.

For another example, each subframe may include 8 time units, wherein the length of the 8 time units may be 4 symbols, 3 symbols, 4 symbols, 3 symbols, 4 symbols, 3 symbols, 4 in order. Symbols, 3 symbols. Alternatively, the length of the eight time units may be 4 symbols, 3 symbols, 3 symbols, 4 symbols, 4 symbols, 3 symbols, 3 symbols, and 4 symbols.

For another example, each subframe may include 12 time units, wherein the length of the 12 time units may be 3 symbols, 2 symbols, 2 symbols, 3 symbols, 2 symbols, 2 symbols, 3 Symbol, 2 symbols, 2 symbols, 3 symbols, 2 symbols, 2 symbols. Alternatively, the length of the 12 time units may be 2 symbols, 2 symbols, 3 symbols, 2 symbols, 2 symbols, 3 symbols, 2 symbols, 2 symbols, 3 symbols, 2 in order. Symbol, 2 symbols, 3 symbols.

For another example, each subframe may include 14 time units, wherein each of the 14 time units may have a length of 2 symbols.

As another example, each subframe may include 28 time units, wherein each of the 28 time units may be 1 symbol in length.

Situation 2

In the case where the subcarrier spacing is 60 kHz, each subframe (1 ms) includes 56 symbols.

In this case, for example, each subframe may include 8 time units, and each time unit may have a length of 7 symbols.

For another example, each subframe may include 16 time units, wherein the length of the 16 time units may be 4 symbols, 3 symbols, 4 symbols, 3 symbols, 4 symbols, 3 symbols, 4 in order. Symbol, 3 symbols, 4 symbols, 3 symbols, 4 symbols, 3 symbols, 4 symbols, 3 symbols, 4 symbols, 3 symbols. Alternatively, the length of the 16 time units may be 4 symbols, 3 symbols, 3 symbols, 4 symbols, 4 symbols, 3 symbols, 3 symbols, 4 symbols, 4 symbols, and 3 symbols. Symbol, 3 symbols, 4 symbols, 4 symbols, 3 symbols, 3 symbols, 4 symbols.

For another example, each subframe may include 24 time units, wherein the length of the 24 time units may be 3 symbols, 2 symbols, 2 symbols, 3 symbols, 2 symbols, 2 symbols, 3 Symbol, 2 symbols, 2 symbols, 3 symbols, 2 symbols, 2 symbols, 3 symbols, 2 symbols, 2 symbols, 3 symbols, 2 symbols, 2 symbols, 3 symbols 2 symbols, 2 symbols, 3 symbols, 2 symbols, 2 symbols. Alternatively, the length of the 24 time units may be 2 symbols, 2 symbols, 3 symbols, 2 symbols, 2 symbols, 3 symbols, 2 symbols, 2 symbols, 3 symbols, 2 in order. Symbol, 2 symbols, 3 symbols, 2 symbols, 2 symbols, 3 symbols, 2 symbols, 2 symbols, 3 symbols, 2 symbols, 2 symbols, 3 symbols, 2 symbols, 2 symbols, 3 symbols.

For another example, each subframe may include 28 time units, wherein each of the 28 time units may have a length of 2 symbols.

As another example, each subframe may include 56 time units, wherein each of the 56 time units may be 1 symbol in length.

Situation 3

In the case where the subcarrier spacing is 15 kHz, each subframe (1 ms) includes 14 symbols.

In this case, for example, each subframe may include 2 time units, and each time unit may have a length of 7 symbols.

For another example, each subframe may include four time units, wherein the length of the four time units may be 4 symbols, 3 symbols, 4 symbols, and 3 symbols in order. Alternatively, the length of the four time units may be 4 symbols, 3 symbols, 3 symbols, and 4 symbols in order.

For another example, each subframe may include 6 time units, wherein the lengths of the 6 time units may be 3 symbols, 2 symbols, 2 symbols, 3 symbols, 2 symbols, 2 symbols. Alternatively, the length of the six time units may be two symbols, two symbols, three symbols, two symbols, two symbols, and three symbols.

For another example, each subframe may include 7 time units, wherein each of the 7 time units may have a length of 2 symbols.

For another example, each subframe may include 14 time units, wherein each of the 14 time units may have a length of 1 symbol.

It should be understood that the lengths and combinations of the above-mentioned time units are merely exemplary, and the present application is not limited thereto, and may be arbitrarily changed according to the requirements of the communication system or the communication protocol or the actual application.

Optionally, in the embodiment of the present application, the number of symbols included in the time unit included in each subframe corresponds to the manner in which the transmission time interval TTI is divided in each subframe.

Specifically, in the embodiment of the present application, the time-frequency resource used by the communication system 100 for wireless communication may be divided into multiple subframes in the time domain, each subframe has a length of 1 ms, and each subframe includes more than one transmission. Transmission Time Interval (TTI) refers to the length of an independent decoding transmission in a wireless link.

In communication networks, latency is a key performance indicator that also affects the user experience. With the development of communication protocols, the scheduling interval of the physical layer that has the most obvious impact on delay is getting smaller and smaller. In the original WCDMA, the scheduling interval is 10ms, and High-Speed Packet Access (HSPA) is used. The scheduling interval is shortened to 2ms, and the scheduling interval (ie, TTI) in Long Term Evolution (LTE) is shortened to 1ms.

The hourly service requirement causes the LTE physical layer to introduce a shorter TTI frame structure to further shorten the scheduling interval. For example, the TTI length can be shortened from 1 ms to 1 symbol (symbol) to 1 slot (including 7 symbols). . The symbols mentioned above may be Orthogonal Frequency Division Multiplexing (OFDM) symbols or Single Carrier-Frequency Division Multiple Access (SC-FDMA) symbols in an LTE system, and may also be Is a symbol in other communication systems.

In the prior art, in the data transmission based on the TTI with a length of 1 ms, the round-trip time ("RTT") of the data transmission is 8 ms.

It is assumed that the processing time is proportionally reduced compared to the scheduling of an existing TTI of 1 ms in length, that is, the existing RTT delay is still followed. Taking the TTI length of one slot as an example, based on the Hybrid Automatic Repeat Request (HARQ) technology, the base station transmits data to the user equipment in slot #3, if the user equipment receives the If the data is correctly demodulated and decoded, the acknowledgement character (Acknowledgement, ACK) is fed back to the base station in slot #7. If the user equipment does not correctly demodulate and decode the received data, it will report back to the base station in slot #7. The character (Negative Acknowledgment, NACK), and the base station decides to perform new data transmission or retransmission processing on the downlink according to the received ACK/NACK in slot #11. The fed back ACK or NACK may also be collectively referred to as HARQ-ACK information. Therefore, in the data transmission based on the sTTI of one slot, the RTT of the data transmission is 8 slots, that is, 4 ms, and the delay can be shortened by half with respect to the data transmission based on the TTI of 1 ms in length.

The above TTI whose length is less than 1 subframe (or 1 ms) may be referred to as a slot or a mini-slot. For example, the length of the time slot may be 14 or 7 symbols, and the length of the mini time slot may be any one of 1 to 7 symbols, or the length of the mini time slot may be at least 1 to 7 symbols. Two combinations of different lengths, for example, 4 mini-slots in 1 ms, each mini-slot length can be 4 symbols, 3 symbols, 4 symbols, 3 symbols, respectively, or each mini-slot length can be respectively It is 4 symbols, 3 symbols, 3 symbols, 4 symbols, and each mini-slot length can also be a combination of other different lengths.

In this case, in the embodiment of the present application, the length of the time unit in the communication system 100 may correspond to the division manner of the Transmission Time Interval (TTI) used in the communication system 100, for example, in one subframe. The time unit corresponding to the same location (or the same sequence number) may be the same as the length of the TTI (or slot or minislot).

The communication system 100 may be in a communication system using TDD technology, that is, in the communication system 100, uplink transmission and downlink transmission use the same frequency domain resource in different time periods due to the existence of physical propagation delay and the communication device (For example, network devices and terminal devices) require additional processing time when switching between uplink and downlink.

Therefore, in the implementation of the present application, as shown in FIG. 2, the symbols included in each subframe in the communication system 100 are divided into a portion for uplink transmission (ie, an example of an uplink portion), and a portion for downlink transmission. (ie, an example of the downstream portion) and a spacing portion between the upstream portion and the downstream portion. Therefore, in the embodiment of the present application, the processing time required for uplink and downlink handover can be provided through the interval portion. The interval portion may also be referred to as a guard interval (Gard Period, GP), which is a communication system (specifically, a network device and a terminal device in a communication system) that performs uplink-downlink switching (or duplex conversion). The time interval utilized. That is, in the embodiment of the present application, the interval portion prohibits the bearer signal.

In addition, in the embodiment of the present application, there is only one uplink part in each subframe, and only one downlink part exists in each subframe, and only one interval part exists in each subframe.

In addition, in the embodiment of the present application, the symbols used for uplink transmission in each subframe are consecutive one or more symbols, and the symbols used for downlink transmission in each subframe are consecutive one or more symbols, and each subframe The symbols occupied by the spacing portion are consecutive one or more symbols. That is, in the embodiment of the present application, there is only one chance of uplink and downlink handover in each subframe. The network device and the terminal device stop transmitting and receiving at every sub-frame interval, but perform transmission and reception state switching of the respective devices.

It should be noted that, in the embodiment of the present application, although each subframe includes an uplink part and a downlink part, the uplink part may carry an uplink signal or may not carry an uplink signal, and the downlink part may carry a downlink signal. The downlink signal is not carried, and can be determined by the actual communication situation and can be determined by the actual communication situation.

In addition, in the embodiment of the present application, the relative positions of the uplink part and the downlink part in the time domain in each subframe may be arbitrarily set. For example, the uplink part in each subframe may be located before the downlink part in the time domain, that is, The order of the parts in each sub-frame in the time domain may be, in order, the uplink part, the interval part, and the downlink part. For example, the downlink part in each subframe may be located before the uplink part in the time domain, that is, the order of the parts in each subframe in the time domain may be, in order, the downlink part, the interval part, and the uplink part.

In addition, as shown in FIG. 2, in the embodiment of the present application, in each subframe, the uplink part may include at least one (ie, N, N≥1) symbols, and the downlink part may include at least one (ie, M, M ≥ 1) symbols, the interval portion may include at least one (ie, K, K ≥ 1) symbols.

In addition, in the embodiment of the present application, the N symbols included in the uplink part may belong to at least one (ie, P, P≥1) time units (ie, the first time unit), that is, in the embodiment of the present application. The first time unit may be a time unit for carrying an uplink signal. It should be noted that, in the embodiment of the present application, the N symbols included in the uplink part may be all the symbols in the P time units, or the N symbols included in the uplink part may be the P time. The partial symbols in the unit are not particularly limited in the present application. For example, in the P time units, in addition to the N symbols included in the uplink portion, the K symbols included in the interval portion may be included.

Similarly, in the embodiment of the present application, the M symbols included in the downlink part may belong to at least one (ie, Q, Q ≥ 1) time unit (ie, the second time unit), that is, in the embodiment of the present application, the second time unit may be a time unit for carrying the downlink signal. It should be noted that, in the embodiment of the present application, the M symbols included in the downlink part may be all the symbols in the Q time units, or the M symbols included in the downlink line part may be the Q The partial symbols in the time unit are not particularly limited in the present application. For example, in addition to the M symbols included in the downlink portion, the K symbols in the time unit may include the K symbols included in the interval portion.

In the following, the structure of the interval portion in each subframe is described in detail in the embodiment of the present application.

1. The length of the interval

In the embodiment of the present application, the duration of the interval portion may be determined according to at least one of the following parameters.

Parameter 1-1: The length of time required for the network device to perform uplink and downlink handover is the duration, and/or the duration of the uplink and downlink handover performed by the terminal device is the duration.

By way of example and not limitation, for example, the duration required for the network device to perform the uplink and downlink handover is the duration #a, and the duration required for the terminal device to perform the uplink and downlink handover is the duration #b, and the duration of the interval portion may be greater than or equal to The larger one of the duration #a and the duration #b is such that the duration of the interval portion satisfies the requirement of the switching duration of both the network device and the terminal device.

Parameter 1-2: coverage of the cell in which the network device and the terminal device are located (or coverage distance or cell radius)

As an example and not by way of limitation, for example, if the coverage of the cell in which the network device and the terminal device are located is large, when the terminal device is at the cell edge, the delay of signal transmission between the network device and the terminal device is large, so The duration of the interval portion is also required to be long. That is, in the embodiment of the present application, the duration of the interval portion and the cell coverage may have a proportional relationship, that is, the larger the coverage of the cell, the larger the duration of the interval portion.

2. The number of symbols included in the interval part K

In the embodiment of the present application, the number of symbols is determined by the granularity of symbols (that is, the length of each symbol in the time domain, which may also be referred to as the period of the symbol, and the length in the time domain also includes the cyclic prefix of the symbol. The duration of the subframe and the length of the subframe, that is, the number of symbols may be determined according to the ratio of the length of the subframe to the granularity of the symbol, and therefore, in the case where the duration of the interval portion is determined as described above, the number of symbols included in the interval portion K It can be determined by the granularity of the symbols, that is, the larger the symbol granularity, the smaller the number K of symbols included in the interval portion; the smaller the symbol granularity, the larger the number K of symbols included in the interval portion.

Specifically, the OFDM technique can use X (X ≥ 2) subcarriers in the frequency domain, and can convert the frequency domain signals on the X subcarriers into time domain signals, in order to avoid crosstalk between symbols, in each time domain waveform Add a small waveform before it. This small waveform is the end of the previous time domain waveform. Because the time domain waveform is copied and placed in front, it is called Cyclic Prefix (CP). In an actual system, before the OFDM symbol is sent to the channel, the cyclic prefix is first added and then sent to the channel for transmission. At the receiving end, the portion of the width Tg at the beginning of the received symbol is first discarded, and then the remaining portion of the width T is subjected to fast Fourier transform, and then demodulated. Adding a cyclic prefix to the OFDM symbol ensures that the number of waveform periods included in the delay copy of the OFDM symbol is also an integer during a fast Fourier transform period, so the delay at this time is only equivalent for each subcarrier. The rotation of the phase, this rotation does not produce ICI during demodulation.

The choice of subcarrier spacing for an OFDM system depends on a compromise between spectral efficiency and frequency offset capability. Under a certain CP length (less than the cell size and multipath channel characteristics), the smaller the subcarrier spacing, the longer the OFDM symbol period, the system frequency The higher the spectral efficiency. At the same time, too small subcarrier spacing is too sensitive to Doppler shift and phase noise, which can affect system performance. In addition, in the TDD system, in order to reduce the implementation complexity of the device, the interval used for uplink and downlink handover should occupy an integer number of symbols, the subcarrier spacing is too small, and the symbol is too long, which may cause unnecessary system overhead caused by the interval. Reduce system spectrum efficiency. For example, even though the actual network deployment requires only one-half the symbol length interval, only one symbol can be used as the interval in order to align the symbol edges.

In the embodiment of the present application, different combinations of subcarrier spacing and CP length may be applicable to different communication environments. For example, the Normal CP length when the subcarrier spacing is 30 kHz is more suitable for urban environment deployment. Specifically, a 30 kHz OFDM symbol is used as the guard interval, which can meet the coverage radius requirement of the urban deployment cell, and at the same time save time and frequency. Resources, compared to the 15 kHz and 60 kHz subcarrier spacing, can better balance resource overhead and urban deployment requirements.

For example, the Normal CP length when the subcarrier spacing is 60 kHz is more suitable for indoor environment deployment, and the small cell deployment using high frequency carriers. Specifically, a 60 kHz OFDM symbol is used as the guard interval, which can satisfy the small cell deployment. The coverage radius requirement of the cell is also conducive to saving resources.

For example, the Normal CP length at a subcarrier spacing of 15 kHz is longer than the Normal CP length when the subcarrier spacing is 30 kHz or 60 kHz, which is advantageous for deployment in a suburban (Urban) scenario with low resource overhead, and can satisfy an urban scenario. Deploy the need for larger cell radii.

In the embodiment of the present application, the number K of symbols included in the interval portion may be determined according to at least one of the following parameters.

Parameter 2-1: Subcarrier spacing of communication resources (specifically, frequency domain resources) used by communication system 100

In the embodiment of the present application, the symbol granularity may be determined according to the subcarrier spacing of the frequency domain resource. For example, in the embodiment of the present application, the larger the subcarrier spacing, the smaller the symbol granularity, and thus, the number of symbols included in the interval portion. The larger K is, the smaller the subcarrier spacing is, the larger the symbol granularity is, and thus the smaller the number K of symbols included in the interval portion.

Parameter 2-2: Cyclic Prefix (CP) used by the communication system 100

In the embodiment of the present application, the subcarrier spacing may be determined according to the CP. For example, in the embodiment of the present application, the smaller the CP, the larger the subcarrier spacing; the larger the CP, the smaller the subcarrier spacing. Thereby, it is possible to determine the subcarrier spacing based on the CP, and further determine the symbol granularity according to the determined subcarrier spacing, thereby determining the number K of symbols included in the interval portion.

It should be understood that the parameters enumerated above for determining the number K of symbols included in the interval portion (specifically, parameters including the length of time for determining the interval portion and parameters for determining the number of symbols K included in the interval portion) may be used alone. The present application is also not particularly limited. For example, when the subcarrier spacing is 30 kHz and the cell coverage (or the cell radius) is 5 km (km), the number of symbols included in the interval portion can be made K= 1.

For another example, when the subcarrier spacing is 30 kHz and the cell coverage (or the cell radius) is 10 km, the number of symbols included in the interval portion can be made K=2.

For another example, when the subcarrier spacing is 30 kHz and the cell coverage (or the cell radius) is 15 km, the number of symbols included in the interval portion can be made K=3.

For another example, when the subcarrier spacing is 30 kHz and the cell coverage (or the cell radius) is 20 km, the number of symbols included in the interval portion may be K=4.

For another example, when the subcarrier spacing is 60 kHz and the cell coverage (or the cell radius) is 2.5 km, the number of symbols included in the interval portion can be made K=1.

For another example, when the subcarrier spacing is 60 kHz and the cell coverage (or the cell radius) is 5 km, So that the number of symbols included in the interval portion is K=2.

For another example, when the subcarrier spacing is 15 kHz and the cell coverage (or cell radius) is 10 km, the number of symbols included in the interval portion may be set to 1=1.

It should be noted that, in the embodiment of the present application, the number of symbols K included in the interval portion may be a value specified by a communication system or a communication protocol, so that the network device and the terminal device may determine that the interval portion includes according to a system or a communication protocol. The number of symbols is K.

Alternatively, in the embodiment of the present application, the network device may determine the number of symbols K included in the interval portion, and deliver the indication information of the number of symbols K included in the interval portion (that is, an example of the first indication information) to the terminal device.

Or, in the embodiment of the present application, the operator or the manufacturer may pre-set the mapping relationship between the plurality of parameters and the plurality of K values (hereinafter, for ease of understanding and distinction, the first mapping relationship) In the network device or the terminal device, the network device and the terminal device can then search for the parameters used in the communication system 100 from the first mapping relationship based on the parameters used in the currently accessed communication system 100. The K value, as the number of symbols included in the interval portion currently used.

In the following, the position of the interval portion in each subframe is described in detail in the embodiment of the present application.

In the embodiment of the present application, consecutive K symbols included in the interval portion in the subframe may be located between consecutive N symbols included in the uplink portion and consecutive M symbols included in the downlink portion.

In addition, as described above, when a subframe is divided into a plurality of time units (for example, including a first time unit for uplink transmission and a second time unit for downlink transmission), the interval portion in the subframe is included The consecutive K symbols may belong to the first time unit described above, or the consecutive K symbols included in the interval portion of the subframe may belong to the second time unit.

By way of example and not limitation, in the embodiment of the present application, the interval including the interval in the subframe may be determined from the first time unit and the second time unit according to the ratio of the first time unit and the second time unit in the subframe. The time unit of consecutive K symbols included.

For example, as shown in FIG. 3, when the downlink portion of the subframe is located before the uplink portion in the time domain, and when the number of second time units in the subframe is greater than the number of the first time unit (or, the second time) When the ratio of the number of units to the number of first time units is greater than 1), the consecutive K symbols included in the interval portion may be located in the second time unit, for example, consecutive K symbols included in the interval portion may be located. The last K symbols in the time domain in the (one or more consecutive) second time units in the subframe.

For another example, as shown in FIG. 4, when the downlink portion of the subframe is located before the uplink portion in the time domain, and when the number of second time units in the subframe is less than the number of the first time unit (or second When the ratio of the number of time units to the number of first time units is less than 1), the consecutive K symbols included in the interval portion may be located in the first time unit, for example, consecutive K symbols included in the interval portion may be The first K symbols in the time domain in the (one or more consecutive) first time units in the subframe.

For another example, as shown in FIG. 5, when the downlink portion of the subframe is located before the uplink portion in the time domain, and when the number of second time units in the subframe is equal to the number of the first time unit (or second When the ratio of the number of time units to the number of first time units is equal to 1), the consecutive K symbols included in the interval portion may be located in the first time unit, for example, consecutive K symbols included in the interval portion may be The first K symbols in the time domain in the first time unit(s) in the subframe.

It should be understood that the time units including the spacing portion shown in the above FIGS. 3 to 5 are merely exemplary descriptions, and the present application It is not limited thereto. For example, the first time unit may be located before the second time unit, or the interval portion may belong to the second of the second time unit and the first time unit.

In the following, the structure of the uplink part and the downlink part in each subframe is described in detail in the embodiment of the present application.

A. Proportion of the number N of symbols included in the uplink portion and the number M of symbols included in the downlink portion

In the embodiment of the present application, the total number of symbols included in the subframe is fixed. Therefore, when the number N of symbols included in the uplink portion of the subframe changes (for example, increases or decreases), the symbols included in the downlink portion are The quantity M also changes accordingly (for example, decreasing or increasing).

By way of example and not limitation, in the embodiment of the present application, the ratio i of the number of symbols included in the uplink part and the number M of symbols included in the downlink part may be uplink services and downlinks according to the cell in which the network device and the terminal device are located. The proportion of the business is determined.

For example, when the number of uplink services is greater than the number of downlink services, the number N of symbols included in the uplink portion may be greater than the number M of symbols included in the downlink portion, or the number N of symbols and the downlink portion included in the uplink portion may be included. The ratio i of the number of symbols M is greater than 1; or, when the amount of data of the uplink service is greater than the amount of data of the downlink service, the number N of symbols included in the uplink portion may be greater than the number M of symbols included in the downlink portion, or The ratio i of the number N of symbols included in the uplink portion to the number M of symbols included in the downlink portion is greater than 1.

For example, when the number of uplink services is smaller than the number of downlink services, the number N of symbols included in the uplink portion may be smaller than the number M of symbols included in the downlink portion, or the number of symbols N and the downlink portion that may be included in the uplink portion. The ratio i of the number M of symbols included is less than 1; or, when the data volume of the uplink service is smaller than the data volume of the downlink service, the number N of symbols included in the uplink portion may be smaller than the number M of symbols included in the downlink portion, or The ratio i of the number of symbols included in the upstream portion to the number M of symbols included in the downstream portion is less than one.

It should be understood that the method and the process for determining the ratio of the number N of symbols included in the uplink portion and the number M of symbols included in the downlink portion are merely exemplary, and the present application is not limited thereto, for example, the uplink portion includes The ratio of the number N of symbols to the number M of symbols included in the downlink portion may also be 1, or the number N of symbols included in the uplink portion may be the same as the number M of symbols included in the downlink portion.

It should be noted that, in the embodiment of the present application, the ratio of the number N of symbols included in the uplink part to the number M of symbols included in the downlink part may be a value specified by a communication system or a communication protocol, so that the network device and the terminal device may The ratio of the number N of symbols included in the uplink portion to the number M of symbols included in the downlink portion is determined according to a specification of the system or the communication protocol.

Alternatively, in the embodiment of the present application, the network device may determine a ratio of the number N of symbols included in the uplink portion to the number M of symbols included in the downlink portion, and set the number of symbols included in the uplink portion to the symbol included in the downlink portion. The indication information of the ratio of the number M (that is, an example of the second indication information) is delivered to the terminal device.

In addition, in the embodiment of the present application, the operator or the manufacturer may map the ratio of the multiple uplink and downlink services to the multiple values of i (hereinafter, in order to facilitate understanding and distinguishing, the second mapping relationship is described as follows: The network device and the terminal device are preset in the network device or the terminal device, so that the network device and the terminal device can find the upper and lower of the communication system 100 from the second mapping relationship based on the proportion of the uplink and downlink services in the currently accessed communication system 100. The i value corresponding to the proportion of the line service is the ratio of the number N of symbols included in the currently used uplink portion to the number M of symbols included in the downlink portion.

B. The minimum number of symbols included in the upstream part N

In the embodiment of the present application, in order to satisfy the uplink transmission, for example, the minimum requirement for time-frequency resources of one uplink URLLC transmission (or a downlink URLLC data packet), a time-frequency resource corresponding to one subframe is required (for example, one A plurality of resource elements (Resources, REs) corresponding to the subframes include a specified number of time-frequency resources for uplink transmission. As an example and not by way of limitation, the minimum number of time-frequency resources used for uplink transmission may be 400 REs. .

In addition, in the embodiment of the present application, when the bandwidth of the frequency domain resource and/or the subcarrier spacing of the frequency domain resource are different, the time-frequency resources corresponding to the same number of symbols are also different. In other words, when a time-frequency resource (for example, 4000 REs) for uplink transmission is specified in one subframe, if the bandwidth and/or the sub-carrier spacing of the frequency domain resource corresponding to the subframe changes, The number of symbols N used for uplink transmission in the subframe also changes accordingly.

And, when the subframe is divided into a plurality of time units (for example, including a first time unit for uplink transmission and a second time unit for downlink transmission), the number of symbols included in the uplink portion of the subframe is N The minimum value may correspond to the minimum number of first time units in the subframe.

For example, when the subcarrier spacing is 30 kHz and the bandwidth of the frequency domain resource is any value between 10 megahertz (MHz) and 20 MHz, each subframe contains 4 time units, and each time unit contains 7 symbols. In this case, the minimum value of the number N of symbols included in the uplink portion of the subframe may be 14 such that the minimum value of the first time unit is 2; or if the physical broadcast channel and/or the synchronization signal are carried in the subframe Therefore, the minimum value of the number N of symbols included in the uplink portion of the subframe may be 7, so that the minimum value of the first time unit is 1; or, if the random access channel is carried in the subframe, the sub-frame may be used. The minimum value of the number N of symbols included in the uplink portion of the frame is 14, so that the minimum value of the first time unit is 2.

For another example, when the subcarrier spacing is 30 kHz and the bandwidth of the frequency domain resource is any value between 20 MHz and 40 MHz, each subframe contains 4 time units, and each time unit contains 7 symbols. In this case, the minimum value of the number N of symbols included in the uplink portion of the subframe may be 7, so that the minimum value of the first time unit is 1; or, if the random access channel is carried in the subframe, The minimum value of the number N of symbols included in the uplink portion of the subframe is 14, so that the minimum value of the first time unit is 2.

For another example, when the subcarrier spacing is 30 kHz and the bandwidth of the frequency domain resource is any value above 40 MHz, each subframe includes 4 time units, and each time unit includes 7 symbols. In this case, the minimum value of the number N of symbols included in the uplink portion of the subframe is 7, so that the minimum value of the first time unit is 1; or, if the random access channel is carried in the subframe, the subframe can be made. The minimum value of the number N of symbols included in the upper portion is 14 and the minimum value of the first time unit is 2.

For another example, when the subcarrier spacing is 30 kHz and the bandwidth of the frequency domain resource is any value of 40 MHz or more, each subframe includes 8 time units, and each time unit includes 3 symbols or 4 symbols. In this case, the minimum value of the number N of symbols included in the uplink portion of the subframe is 7, so that the minimum value of the first time unit is 2; or, if the random access channel is carried in the subframe, the subframe can be made. The minimum value of the number N of symbols included in the upper portion is 14 and the minimum value of the first time unit is 4.

For another example, when the subcarrier spacing is 60 kHz and the bandwidth of the frequency domain resource is any value between 10 MHz and 20 MHz, each subframe contains 8 time units, and each time unit contains 7 symbols. In this case, the value of the number N of symbols included in the uplink portion of the subframe may be 28, so that the value of the first time unit is 4; or, if the random access channel is carried in the subframe, the subframe may be made. The minimum value of the number N of symbols included in the middle up portion is 28, so that the minimum value of the first time unit is 4.

For example, when the subcarrier spacing is 60 kHz and the bandwidth of the frequency domain resource is any value above 20 MHz, each subcarrier The frame contains 8 time units, and each time unit contains 7 symbols. In this case, the minimum value of the number N of symbols included in the uplink portion of the subframe is 14 such that the minimum value of the first time unit is 2; or, if the random access channel is carried in the subframe, the subframe can be made. The minimum value of the number N of symbols included in the middle up portion is 28, so that the minimum value of the first time unit is 4.

For example, when the subcarrier spacing is 15 kHz and the bandwidth of the frequency domain resource is any value between 10 MHz and 20 MHz, each subframe contains 4 time units, and each time unit contains 3 symbols or 4 symbols. In this case, the minimum value of the number N of symbols included in the uplink portion of the subframe may be 7, such that the minimum value of the first time unit is 2; or, if the physical broadcast channel and/or the synchronization signal are carried in the subframe Therefore, the minimum value of the number N of symbols included in the uplink portion of the subframe may be 3 or 4, so that the minimum value of the first time unit is 1; or, if the random access channel is carried in the subframe, The minimum value of the number N of symbols included in the uplink portion of the subframe is set to 7, so that the minimum value of the first time unit is 2.

For another example, when the subcarrier spacing is 15 kHz and the bandwidth of the frequency domain resource is any value between 20 MHz and 40 MHz, each subframe contains 4 time units, and each time unit contains 3 symbols or 4 symbols. In this case, the minimum value of the number N of symbols included in the uplink portion of the subframe may be 3 or 4, so that the minimum value of the first time unit is 1; or, if the random access channel is carried in the subframe, The minimum value of the number N of symbols included in the uplink portion of the subframe may be set to 7, so that the minimum value of the first time unit is 2.

For another example, when the subcarrier spacing is 15 kHz and the bandwidth of the frequency domain resource is any value of 40 MHz or more, each subframe includes 4 time units, and each time unit includes 3 symbols or 4 symbols. In this case, the minimum value of the number N of symbols included in the uplink portion of the subframe is 3 or 4, so that the minimum value of the first time unit is 1; or, if the random access channel is carried in the subframe, The minimum value of the number N of symbols included in the uplink portion of the subframe is 7, so that the minimum value of the first time unit is 2.

For another example, when the subcarrier spacing is 15 kHz and the bandwidth of the frequency domain resource is any value of 40 MHz or more, each subframe includes 7 time units, and each time unit includes 2 symbols. In this case, the minimum value of the number N of symbols included in the uplink portion of the subframe is 4, so that the minimum value of the first time unit is 2; or, if the random access channel is carried in the subframe, the subframe can be made. The minimum value of the number N of symbols included in the middle up portion is 8, so that the minimum value of the first time unit is 4.

It should be noted that, in the embodiment of the present application, the number N of symbols included in the uplink portion (or the number of first time units) may be a value specified by a communication system or a communication protocol, so that the network device and the terminal device may be configured according to The specification of the system or communication protocol determines the number N of symbols (or the number of first time units) included in the upstream portion.

Alternatively, in the embodiment of the present application, the network device may determine the number N of symbols included in the uplink part (or the number of first time units), and the number of symbols included in the uplink part is N (or the first time unit) The indication information (that is, another example of the second indication information) is delivered to the terminal device.

Or, in the embodiment of the present application, the operator or the manufacturer may map the multiple bandwidths and/or subcarrier spacings to multiple N values (or a plurality of first time units). Hereinafter, in order to facilitate understanding and differentiation, it is noted that: the third mapping relationship is preset in the network device or the terminal device, so that the network device and the terminal device can use the bandwidth and/or the child based on the currently accessed communication system 100. a carrier interval from which an N value (or a quantity value of a first time unit) corresponding to a used bandwidth and/or a subcarrier spacing in the communication system 100 is searched for, as included in the upstream portion of the current use The number of symbols (or the number of first time units).

C. The minimum value of the number of symbols included in the downstream part M

In the embodiment of the present application, in order to satisfy the downlink transmission, for example, the minimum requirement of the downlink MACLC transmission (or the data packet of one downlink URLLC) for the time-frequency resource requires a time-frequency resource corresponding to one subframe (for example, one). The plurality of REs corresponding to the subframe includes a specified number of time-frequency resources for downlink transmission. As an example and not by way of limitation, the minimum number of time-frequency resources used for downlink transmission may be 4000 REs.

In addition, in the embodiment of the present application, when the bandwidth of the frequency domain resource and/or the subcarrier spacing of the frequency domain resource are different, the time-frequency resources corresponding to the same number of symbols are also different. In other words, when a time-frequency resource (for example, 4000 REs) for downlink transmission is specified in one subframe, if the bandwidth and/or sub-carrier spacing of the frequency domain resource corresponding to the subframe changes, The number M of symbols used for downlink transmission in the subframe also changes accordingly.

And, when the subframe is divided into a plurality of time units (for example, including a first time unit for downlink transmission and a second time unit for downlink transmission), the number of symbols included in the downlink portion of the subframe is M The minimum value may correspond to the minimum value of the second time unit in the subframe.

For example, when the subcarrier spacing is 30 kHz and the bandwidth of the frequency domain resource is any value between 10 megahertz (MHz) and 20 MHz, each subframe contains 4 time units, and each time unit contains 7 symbols. In this case, the minimum value of the number M of symbols included in the downlink portion of the subframe may be 14 such that the minimum value of the second time unit is 2; or if the physical broadcast channel and/or the synchronization signal are carried in the subframe Then, the minimum value of the number M of symbols included in the downlink portion of the subframe may be 21, and the minimum value of the second time unit is 3.

For another example, when the subcarrier spacing is 30 kHz and the bandwidth of the frequency domain resource is any value between 20 MHz and 40 MHz, each subframe contains 4 time units, and each time unit contains 7 symbols. In this case, the minimum value of the number M of symbols included in the downlink portion of the subframe may be 7 and the minimum value of the second time unit is 1; or if the physical broadcast channel and/or the synchronization signal are carried in the subframe Then, the minimum value of the number M of symbols included in the downlink portion of the subframe can be 14, and the minimum value of the second time unit is 2.

For another example, when the subcarrier spacing is 30 kHz and the bandwidth of the frequency domain resource is any value above 40 MHz, each subframe includes 4 time units, and each time unit includes 7 symbols. In this case, the minimum value of the number M of symbols included in the downlink portion of the subframe is 7, so that the minimum value of the second time unit is 1.

For another example, when the subcarrier spacing is 30 kHz and the bandwidth of the frequency domain resource is any value of 40 MHz or more, each subframe includes 8 time units, and each time unit includes 3 symbols or 4 symbols. In this case, the minimum value of the number M of symbols included in the downlink portion of the subframe is 7, so that the minimum value of the second time unit is 2.

For another example, when the subcarrier spacing is 60 kHz and the bandwidth of the frequency domain resource is any value between 10 MHz and 20 MHz, each subframe contains 8 time units, and each time unit contains 7 symbols. In this case, the value of the number M of symbols included in the downlink portion of the subframe may be 28, such that the value of the second time unit is 4; or, if the physical broadcast channel and/or the synchronization signal is carried in the subframe, The minimum value of the number M of symbols included in the downlink portion of the subframe may be 35, and the minimum value of the second time unit is 5.

For another example, when the subcarrier spacing is 60 kHz and the bandwidth of the frequency domain resource is any value of 20 MHz or more, each subframe includes 8 time units, and each time unit includes 7 symbols. In this case, the minimum value of the number M of symbols included in the downlink portion of the subframe is 14 such that the minimum value of the second time unit is 2; or, if the physical broadcast channel and/or the synchronization signal is carried in the subframe, The minimum value of the number M of symbols included in the downlink portion of the subframe may be 28, and the minimum value of the second time unit is 4.

For example, when the subcarrier spacing is 15 kHz and the bandwidth of the frequency domain resource is any value between 10 MHz and 20 MHz, each subframe contains 4 time units, and each time unit contains 3 symbols or 4 symbols. In this case, So that the minimum value of the number M of symbols included in the downlink portion of the subframe is 7 and the minimum value of the second time unit is 2; or, if the physical broadcast channel and/or synchronization signal is carried in the subframe, The minimum value of the number M of symbols included in the downlink portion of the subframe is 10 or 11, so that the minimum value of the second time unit is 3.

For another example, when the subcarrier spacing is 15 kHz and the bandwidth of the frequency domain resource is any value between 20 MHz and 40 MHz, each subframe contains 4 time units, and each time unit contains 3 symbols or 4 symbols. In this case, the minimum value of the number M of symbols included in the downlink portion of the subframe may be 3 or 4, such that the minimum value of the second time unit is 1; or, if the subframe carries a physical broadcast channel and/or The synchronization signal may be such that the minimum value of the number M of symbols included in the downlink portion of the subframe is 7 and the minimum value of the second time unit is 2.

For another example, when the subcarrier spacing is 15 kHz and the bandwidth of the frequency domain resource is any value of 40 MHz or more, each subframe includes 4 time units, and each time unit includes 3 symbols or 4 symbols. In this case, the minimum value of the number M of symbols included in the downlink portion of the subframe is 3 or 4, and the minimum value of the second time unit is 1.

For another example, when the subcarrier spacing is 15 kHz and the bandwidth of the frequency domain resource is any value of 40 MHz or more, each subframe includes 7 time units, and each time unit includes 2 symbols. In this case, the minimum value of the number M of symbols included in the downlink portion of the subframe is 4, and the minimum value of the second time unit is 2.

It should be noted that, in the embodiment of the present application, the number M of symbols included in the downlink part (or the number of second time units) may be a value specified by a communication system or a communication protocol, so that the network device and the terminal device may be configured according to The specification of the system or communication protocol determines the number M of symbols (or the number of second time units) included in the downlink portion.

Alternatively, in the embodiment of the present application, the network device may determine the number M of symbols included in the downlink part (or the number of second time units), and the number M of symbols included in the downlink part (or the second time unit) The indication information of the number) (ie, another example of the second indication information) is delivered to the terminal device.

Still further, in the embodiment of the present application, the operator or the manufacturer may map the multiple bandwidths and/or subcarrier spacings with multiple M values (or the quantity values of the second time unit) (hereinafter, In order to facilitate understanding and differentiation, the fourth mapping relationship is pre-set in the network device or the terminal device, so that the network device and the terminal device can be based on the bandwidth and/or sub-carrier spacing used in the currently accessed communication system 100. Finding, from the third mapping relationship, an M value (or a quantity value of the second time unit) corresponding to the used bandwidth and/or subcarrier spacing in the communication system 100, as a symbol included in the currently used uplink portion Quantity.

FIG. 6 shows a schematic interaction diagram of a method 200 of transmitting or receiving a signal in an embodiment of the present application.

At S210, the network device can determine the structure of the subframe.

Specifically, the network device may determine the number N of symbols included in the uplink portion of the subframe (or the number of time units included in the uplink portion), and the number M of symbols included in the downlink portion (or the time unit included in the downlink portion) The number) and the number K of symbols included in the interval portion (or the time unit to which the interval portion belongs, that is, one of the first time unit and the second time unit). For example, the network device may determine the minimum value of N and/or M described above based on the bandwidth and/or subcarrier spacing of the frequency domain resources used by the cell in which the terminal device is located.

In S220, the network device may send the indication information of the quantity M (that is, an example of the first indication information) and the indication information of the quantity N or the quantity M (that is, an example of the second indication information) to the terminal device (the sending device or Another example of a receiving device).

At S230, the network device may send a downlink signal (eg, a downlink data channel, a downlink) to the terminal device in all or part of the symbols included in the downlink part of the one or more subframes (ie, an example of the first subframe). Control channel or downlink reference signal, etc.). Accordingly, the terminal device can be included in the downlink portion of the subframe(s) All or part of the symbols receive the downlink signal sent by the network device.

Alternatively, in S240, the terminal device may send an uplink signal (for example, an uplink data channel) to the network device in all or part of the symbols included in the uplink part of the subframe(s) (ie, an instance of the second subframe). , uplink control channel or uplink reference signal, etc.). Correspondingly, the network device may receive the uplink signal sent by the terminal device in all or part of the symbols included in the uplink portion of the subframe(s).

It should be noted that, in the embodiment of the present application, the first subframe and the second subframe may be the same subframe or different subframes, and the present application is not particularly limited.

It should be understood that the specific process of the method for transmitting or receiving signals shown in FIG. 6 is merely exemplary. The present application is not limited thereto. For example, the specific values of the foregoing quantity N, quantity M, and quantity K may also be terminal devices. The specific value of the quantity N, the quantity M, and the quantity K may also be determined by the terminal device according to the bandwidth and/or the sub-carrier spacing of the frequency domain resource used by the cell in which the cell is located, according to the specification of the communication system or the communication protocol. of.

According to the communication method of the embodiment of the present application, by configuring an uplink portion for carrying an uplink signal, a downlink portion for carrying a downlink signal, and a spacing portion for uplink and downlink handover in each subframe, it can be ensured in each subframe. There is an opportunity for uplink transmission and downlink transmission, and by setting only one interval portion, that is, there is only one opportunity for uplink and downlink handover, it is possible to reduce waste of frequency domain resources caused by frequent uplink and downlink handover, thereby enabling Improve the efficiency of the use of frequency domain resources.

FIG. 7 shows a schematic block diagram of a communication device 300 of an embodiment of the present application, which may correspond to the network device described in the above system 100 or method 200, and each module in the device 300 of the wireless communication or The units are respectively used to perform various operations or processes performed by the network device in the above-described system 100 or method 200. Here, in order to avoid redundancy, detailed description thereof will be omitted.

In the embodiment of the present application, the apparatus 300 may include: a processor and a transceiver, the processor and the transceiver being connected, optionally, the device further includes a memory, the memory is connected to the processor, and further optionally, the device includes Bus system. Wherein, the processor, the memory and the transceiver can be connected by a bus system, the memory can be used to store instructions for executing instructions stored in the memory to control the transceiver to transmit or receive information or signals.

Wherein, the determining unit in the device 300 shown in FIG. 7 can correspond to the processor, and the communication unit in the device 300 shown in FIG. 7 can correspond to the transceiver.

FIG. 8 shows a schematic block diagram of a communication device 400 of an embodiment of the present application, which may correspond to the terminal device described in the above system 100 or method 200, and each module in the device 400 of the wireless communication or The units are respectively used to perform various operations or processes performed by the terminal device in the above-described system 100 or method 200. Here, in order to avoid redundancy, detailed description thereof will be omitted.

In the embodiment of the present application, the apparatus 400 may include: a processor and a transceiver, the processor and the transceiver being connected, optionally, the device further includes a memory, the memory is connected to the processor, and further optionally, the device includes Bus system. Wherein, the processor, the memory and the transceiver can be connected by a bus system, the memory can be used to store instructions for executing instructions stored in the memory to control the transceiver to transmit or receive information or signals.

Wherein, the determining unit in the device 400 shown in FIG. 8 can correspond to the processor, and the communication unit in the device 400 shown in FIG. 8 can correspond to the transceiver.

It should be noted that the above method embodiments of the present application may be applied to a processor or implemented by a processor. The processor may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the foregoing method embodiment may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software. The above processor can be General-purpose processor, Digital Signal Processor (DSP), Application Specific Integrated Circuit (ASIC), Field Programmable Gate Array (FPGA) or other programmable logic device, discrete door Or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory, and the processor reads the information in the memory and combines the hardware to complete the steps of the above method.

It is to be understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory may be a read-only memory (ROM), a programmable read only memory (PROM), an erasable programmable read only memory (Erasable PROM, EPROM), or an electric Erase programmable read only memory (EEPROM) or flash memory. The volatile memory can be a Random Access Memory (RAM) that acts as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous DRAM). SDRAM), Double Data Rate SDRAM (DDR SDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), Synchronous Connection Dynamic Random Access Memory (Synchlink DRAM, SLDRAM) ) and direct memory bus random access memory (DR RAM). It should be noted that the memories of the systems and methods described herein are intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the term "and/or" herein is merely an association relationship describing an associated object, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists separately, and A and B exist simultaneously. There are three cases of B alone. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.

It should be understood that, in the various 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 order of execution of each process should be determined by its function and internal logic, and should not be applied to the embodiment of the present application. The implementation process constitutes any limitation.

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 present application.

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. Alternatively, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interface, device or unit. The coupling or communication connection can be in 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.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

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 present application, which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including The instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various 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, which can store program codes. .

The foregoing is only a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application. It should be covered by the scope of protection of this application. Therefore, the scope of protection of the present application should be determined by the scope of the claims.

Claims

A communication method, comprising:

The network device determines a first subframe from a plurality of consecutive subframes, wherein each of the consecutive plurality of subframes includes an uplink portion, a spacing portion, and a downlink portion, wherein the spacing portion is located in the uplink portion and the downlink portion Between the parts, the uplink part of each subframe includes consecutive N symbols, the downlink part of each subframe includes consecutive M symbols, and the interval part of each subframe includes consecutive K symbols, N≥1, M≥1 , K≥1, the order of the uplink portion, the downlink portion, and the interval portion between any two of the consecutive plurality of subframes is the same;

The network device determines an uplink portion of the first subframe, and receives an uplink signal sent by the terminal device on part or all of the symbols in the uplink portion of the first subframe; or

The network device determines a downlink portion of the first subframe, and transmits a downlink signal to the terminal device on some or all of the symbols in the downlink portion of the first subframe.
The method according to claim 1, wherein the duration of the interval portion is determined according to a coverage area of a cell in which the terminal device is located.
The method according to claim 1 or 2, wherein when the subcarrier spacing of the frequency domain resources corresponding to the consecutive plurality of subframes is 30 kHz kHz,

If the bandwidth of the frequency domain resource corresponding to the consecutive multiple subframes is greater than or equal to 10 MHz MHz and less than 20 MHz, the minimum value of the number of symbols N included in the uplink portion is 14, or the downlink portion includes The minimum value of the symbol number M is 14;

If the bandwidth of the frequency domain resource corresponding to the consecutive multiple subframes is greater than or equal to 20 MHz, the minimum value of the number of symbols N included in the uplink portion is 7, or the number of symbols included in the downlink portion is M. The minimum value is 7.
The method according to claim 1 or 2, wherein when the subcarrier spacing of the frequency domain resources corresponding to the consecutive plurality of subframes is 60 kHz,

If the bandwidth of the frequency domain resource corresponding to the consecutive multiple subframes is greater than or equal to 10 MHz MHz and less than 20 MHz, the minimum value of the number of symbols N included in the uplink portion is 28, or the downlink portion includes The minimum value of the symbol number M is 28;

If the bandwidth of the frequency domain resource corresponding to the consecutive multiple subframes is greater than or equal to 20 MHz, the minimum value of the number of symbols N included in the uplink portion is 14, or the number of symbols included in the downlink portion is M. The minimum value is 14.
The method according to claim 1 or 2, wherein when the subcarrier spacing of the frequency domain resources corresponding to the consecutive multiple subframes is 15 kHz,

If the bandwidth of the frequency domain resource corresponding to the consecutive multiple subframes is greater than or equal to 10 MHz MHz and less than 20 MHz, the minimum value of the number of symbols N included in the uplink portion is 7, or the downlink portion includes The minimum value of the symbol number M is 7;

If the bandwidth of the frequency domain resource corresponding to the consecutive multiple subframes is greater than or equal to 20 MHz MHz, the minimum value of the number of symbols N included in the uplink portion is 3 or 4, or the number of symbols included in the downlink portion The minimum value of M is 3 or 4.
The method according to any one of claims 1 to 5, wherein when the consecutive plurality of subframes When the subcarrier spacing of the corresponding frequency domain resource is 30 kHz,

If the coverage of the cell in which the terminal device is located is 5 km km, the interval portion includes a value of the symbol number K of 1;

If the coverage of the cell in which the terminal device is located is 10 km km, the interval portion includes the value 2 of the symbol number K;

If the coverage of the cell in which the terminal device is located is 15 km, the interval portion includes a value of the symbol number K of 3;

If the coverage of the cell in which the terminal device is located is 20 km, the interval portion includes the value 4 of the symbol number K.
The method according to any one of claims 1 to 5, wherein when the subcarrier spacing of the frequency domain resources corresponding to the consecutive plurality of subframes is 60 kHz,

If the coverage of the cell in which the terminal device is located is 2.5 km, the interval portion includes a value of the symbol number K of 1;

If the coverage of the cell in which the terminal device is located is 5 km, the interval portion includes the value 2 of the symbol number K.
The method according to any one of claims 1 to 5, wherein when the subcarrier spacing of the frequency domain resources corresponding to the consecutive plurality of subframes is 15 kHz,

If the coverage of the cell in which the terminal device is located is 10 km, the interval portion includes the value 1 of the symbol number K.
The method of any of claims 1 to 8, the method further comprising:

The network device sends first indication information to the terminal device, where the first indication information is used to indicate the number K of symbols included in the interval portion; or

The network device sends second indication information to the terminal device, where the second indication information is used to indicate at least one of the following information:

The ratio of the number N of symbols included in the uplink portion to the number M of symbols included in the downlink portion, the number N of symbols included in the uplink portion, and the number M of symbols included in the downlink portion.
The method according to any one of claims 1 to 9, each of the plurality of subframes comprising at least two time units, each time unit comprising at least one symbol, the at least two time units being included P first time units for uplink transmission and Q second time units for downlink transmission, P≥1, Q≥1, the symbols included in the uplink part belong to the P first time units, The symbols included in the downlink part belong to the Q second time units, the symbols included in the interval part belong to the P first time units, or the symbols included in the interval part belong to the Q second time units .
A communication method, comprising:

The terminal device determines a first subframe from a plurality of consecutive subframes, wherein each of the consecutive plurality of subframes includes an uplink portion, a spacing portion, and a downlink portion, where the spacing portion is located in the uplink portion and the downlink portion Between the parts, the uplink part of each subframe includes consecutive N symbols, the downlink part of each subframe includes consecutive M symbols, and the interval part of each subframe includes consecutive K symbols, N≥1, M≥1 , K≥1, the order of the uplink portion, the downlink portion, and the interval portion between any two of the consecutive plurality of subframes is the same;

Determining, by the terminal device, an uplink portion of the first subframe and a portion in an uplink portion of the first subframe Or sending an uplink signal to the network device on all symbols; or

The receiving device determines a downlink portion of the first subframe, and receives a downlink signal sent by the network device on part or all of the symbols in the downlink portion of the first subframe.
The method according to claim 11, wherein the duration of the interval portion is determined according to a coverage area of a cell in which the terminal device is located.
The method according to claim 11 or 12, wherein when the subcarrier spacing of the frequency domain resources corresponding to the consecutive multiple subframes is 30 kHz kHz,

If the bandwidth of the frequency domain resource corresponding to the consecutive multiple subframes is greater than or equal to 10 MHz MHz and less than 20 MHz, the minimum value of the number of symbols N included in the uplink portion is 14, or the downlink portion includes The minimum value of the symbol number M is 14;

If the bandwidth of the frequency domain resource corresponding to the consecutive multiple subframes is greater than or equal to 20 MHz, the minimum value of the number of symbols N included in the uplink portion is 7, or the number of symbols included in the downlink portion is M. The minimum value is 7.
The method according to claim 11 or 12, wherein when the subcarrier spacing of the frequency domain resources corresponding to the consecutive multiple subframes is 60 kHz,

If the bandwidth of the frequency domain resource corresponding to the consecutive multiple subframes is greater than or equal to 10 MHz MHz and less than 20 MHz, the minimum value of the number of symbols N included in the uplink portion is 28, or the downlink portion includes The minimum value of the symbol number M is 28;

If the bandwidth of the frequency domain resource corresponding to the consecutive multiple subframes is greater than or equal to 20 MHz, the minimum value of the number of symbols N included in the uplink portion is 14, or the number of symbols included in the downlink portion is M. The minimum value is 14.
The method according to claim 11 or 12, wherein when the subcarrier spacing of the frequency domain resources corresponding to the consecutive multiple subframes is 15 kHz,

If the bandwidth of the frequency domain resource corresponding to the consecutive multiple subframes is greater than or equal to 10 MHz MHz and less than 20 MHz, the minimum value of the number of symbols N included in the uplink portion is 7, or the downlink portion includes The minimum value of the symbol number M is 7;

If the bandwidth of the frequency domain resource corresponding to the consecutive multiple subframes is greater than or equal to 20 MHz MHz, the minimum value of the number of symbols N included in the uplink portion is 3 or 4, or the number of symbols included in the downlink portion The minimum value of M is 3 or 4.
The method according to any one of claims 11 to 15, wherein when the subcarrier spacing of the frequency domain resources corresponding to the consecutive plurality of subframes is 30 kHz,

If the coverage of the cell in which the terminal device is located is 5 km km, the interval portion includes a value of the symbol number K of 1;

If the coverage of the cell in which the terminal device is located is 10 km, the interval portion includes the value 2 of the symbol number K;

If the coverage of the cell in which the terminal device is located is 15 km, the interval portion includes a value of the symbol number K of 3;

If the coverage of the cell in which the terminal device is located is 20 km, the interval portion includes the value 4 of the symbol number K.
The method according to any one of claims 11 to 15, wherein when said plurality of consecutive children When the subcarrier spacing of the frequency domain resource corresponding to the frame is 60 kHz,

If the coverage of the cell in which the terminal device is located is 2.5 km, the interval portion includes a value of the symbol number K of 1;

If the coverage of the cell in which the terminal device is located is 5 km, the interval portion includes the value 2 of the symbol number K.
The method according to any one of claims 11 to 15, wherein when the subcarrier spacing of the frequency domain resources corresponding to the consecutive multiple subframes is 15 kHz,

If the coverage of the cell in which the terminal device is located is 10 km, the interval portion includes the value 1 of the symbol number K.
A method according to any one of claims 11 to 18, the method further comprising:

Receiving, by the terminal device, first indication information, where the first indication information is used to indicate the number K of symbols included in the interval portion; or

The terminal device receives the second indication information, where the second indication information is used to indicate at least one of the following information:

The ratio of the number N of symbols included in the uplink portion to the number M of symbols included in the downlink portion, the number N of symbols included in the uplink portion, and the number M of symbols included in the downlink portion.
The method according to any one of claims 11 to 19, each of the plurality of subframes comprising at least two time units, each time unit comprising at least one symbol, the at least two time units being included P first time units for uplink transmission and Q second time units for downlink transmission, P≥1, Q≥1, the symbols included in the uplink part belong to the P first time units, The symbols included in the downlink part belong to the Q second time units, the symbols included in the interval part belong to the P first time units, or the symbols included in the interval part belong to the Q second time units .
A device for transmitting a signal, characterized in that the device comprises:

a determining unit, configured to determine a first subframe from consecutive multiple subframes, where each of the consecutive multiple subframes includes an uplink portion, a spacing portion, and a downlink portion, where the spacing portion is located in the uplink Between the partial and downlink portions, the uplink portion of each subframe includes consecutive N symbols, and the downlink portion of each subframe includes consecutive M symbols, and the interval portion of each subframe includes consecutive K symbols, N≥1, M≥1, K≥1, the order of the uplink portion, the downlink portion, and the interval portion between any two of the consecutive plurality of subframes is the same;

a communication unit, configured to receive an uplink signal sent by the terminal device on part or all of the symbols in the uplink portion of the first subframe; or

And transmitting, on a part or all of the symbols in the downlink part of the first subframe, a downlink signal to the terminal device.
The apparatus according to claim 21, wherein the duration of the interval portion is determined according to a coverage area of a cell in which the terminal device is located.
The apparatus according to claim 21 or 22, wherein when the subcarrier spacing of the frequency domain resources corresponding to the consecutive plurality of subframes is 30 kHz kHz,

If the bandwidth of the frequency domain resource corresponding to the consecutive multiple subframes is greater than or equal to 10 MHz MHz and less than 20 MHz, the minimum value of the number of symbols N included in the uplink portion is 14, or the downlink portion includes The minimum value of the symbol number M is 14;

If the bandwidth of the frequency domain resource corresponding to the consecutive multiple subframes is greater than or equal to 20 MHz, the minimum value of the number of symbols N included in the uplink portion is 7, or the number of symbols included in the downlink portion is M. The minimum value is 7.
The apparatus according to claim 21 or 22, wherein when the subcarrier spacing of the frequency domain resources corresponding to the consecutive plurality of subframes is 60 kHz,

If the bandwidth of the frequency domain resource corresponding to the consecutive multiple subframes is greater than or equal to 10 MHz MHz and less than 20 MHz, the minimum value of the number of symbols N included in the uplink portion is 28, or the downlink portion includes The minimum value of the symbol number M is 28;

If the bandwidth of the frequency domain resource corresponding to the consecutive multiple subframes is greater than or equal to 20 MHz, the minimum value of the number of symbols N included in the uplink portion is 14, or the number of symbols included in the downlink portion is M. The minimum value is 14.
The apparatus according to claim 21 or 22, wherein when the subcarrier spacing of the frequency domain resources corresponding to the consecutive plurality of subframes is 15 kHz,

If the bandwidth of the frequency domain resource corresponding to the consecutive multiple subframes is greater than or equal to 10 MHz MHz and less than 20 MHz, the minimum value of the number of symbols N included in the uplink portion is 7, or the downlink portion includes The minimum value of the symbol number M is 7;

If the bandwidth of the frequency domain resource corresponding to the consecutive multiple subframes is greater than or equal to 20 MHz MHz, the minimum value of the number of symbols N included in the uplink portion is 3 or 4, or the number of symbols included in the downlink portion The minimum value of M is 3 or 4.
The apparatus according to any one of claims 21 to 25, wherein when the subcarrier spacing of the frequency domain resources corresponding to the consecutive plurality of subframes is 30 kHz,

If the coverage of the cell in which the terminal device is located is 5 km km, the interval portion includes a value of the symbol number K of 1;

If the coverage of the cell in which the terminal device is located is 10 km, the interval portion includes the value 2 of the symbol number K;

If the coverage of the cell in which the terminal device is located is 15 km, the interval portion includes a value of the symbol number K of 3;

If the coverage of the cell in which the terminal device is located is 20 km, the interval portion includes the value 4 of the symbol number K.
The apparatus according to any one of claims 21 to 25, wherein when the subcarrier spacing of the frequency domain resources corresponding to the consecutive plurality of subframes is 60 kHz,

If the coverage of the cell in which the terminal device is located is 2.5 km, the interval portion includes a value of the symbol number K of 1;

If the coverage of the cell in which the terminal device is located is 5 km, the interval portion includes the value 2 of the symbol number K.
The apparatus according to any one of claims 21 to 25, wherein when the subcarrier spacing of the frequency domain resources corresponding to the consecutive plurality of subframes is 15 kHz,

If the coverage of the cell in which the terminal device is located is 10 km, the interval portion includes the value 1 of the symbol number K.
The apparatus according to any one of claims 21 to 28, wherein the communication unit is further configured to send first indication information, the first indication information being used to indicate the number K of symbols included in the interval portion; or

And configured to send the second indication information, where the second indication information is used to indicate at least one of the following information:

The ratio of the number N of symbols included in the uplink portion to the number M of symbols included in the downlink portion, the number N of symbols included in the uplink portion, and the number M of symbols included in the downlink portion.
The apparatus according to any one of claims 21 to 29, each of the plurality of subframes comprising at least two time units, each time unit comprising at least one symbol, the at least two time units being included P first time units for uplink transmission and Q second time units for downlink transmission, P≥1, Q≥1, the symbols included in the uplink part belong to the P first time units, The symbols included in the downlink part belong to the Q second time units, the symbols included in the interval part belong to the P first time units, or the symbols included in the interval part belong to the Q second time units .
A device for receiving a signal, characterized in that the device comprises:

a determining unit, configured to determine a first subframe from consecutive multiple subframes, where each of the consecutive multiple subframes includes an uplink portion, a spacing portion, and a downlink portion, where the spacing portion is located in the uplink Between the partial and downlink portions, the uplink portion of each subframe includes consecutive N symbols, and the downlink portion of each subframe includes consecutive M symbols, and the interval portion of each subframe includes consecutive K symbols, N≥1, M≥1, K≥1, the order of the uplink portion, the downlink portion, and the interval portion between any two of the consecutive plurality of subframes is the same;

a communication unit, configured to send an uplink signal to the network device on some or all of the symbols in the uplink portion of the first subframe; or

And receiving, on a part or all of the symbols in the downlink part of the first subframe, a downlink signal sent by the network device.
The apparatus according to claim 31, wherein the duration of said interval portion is determined according to a coverage of a cell in which said device is located.
The apparatus according to claim 31 or 32, wherein when the subcarrier spacing of the frequency domain resources corresponding to the consecutive plurality of subframes is 30 kHz kHz,

If the bandwidth of the frequency domain resource corresponding to the consecutive multiple subframes is greater than or equal to 10 MHz MHz and less than 20 MHz, the minimum value of the number of symbols N included in the uplink portion is 14, or the downlink portion includes The minimum value of the symbol number M is 14;

If the bandwidth of the frequency domain resource corresponding to the consecutive multiple subframes is greater than or equal to 20 MHz, the minimum value of the number of symbols N included in the uplink portion is 7, or the number of symbols included in the downlink portion is M. The minimum value is 7.
The apparatus according to claim 31 or 32, wherein when the subcarrier spacing of the frequency domain resources corresponding to the consecutive plurality of subframes is 60 kHz,

If the bandwidth of the frequency domain resource corresponding to the consecutive multiple subframes is greater than or equal to 10 MHz MHz and less than 20 MHz, the minimum value of the number of symbols N included in the uplink portion is 28, or the downlink portion includes The minimum value of the symbol number M is 28;

If the bandwidth of the frequency domain resource corresponding to the consecutive multiple subframes is greater than or equal to 20 MHz, the minimum value of the number of symbols N included in the uplink portion is 14, or the number of symbols included in the downlink portion is M. The minimum value is 14.
The apparatus according to claim 31 or 32, wherein when the subcarrier spacing of the frequency domain resources corresponding to the consecutive plurality of subframes is 15 kHz,

If the bandwidth of the frequency domain resource corresponding to the consecutive multiple subframes is greater than or equal to 10 MHz MHz and less than 20 MHz, the minimum value of the number of symbols N included in the uplink portion is 7, or the downlink portion includes Symbol The minimum value of the number M is 7;

If the bandwidth of the frequency domain resource corresponding to the consecutive multiple subframes is greater than or equal to 20 MHz MHz, the minimum value of the number of symbols N included in the uplink portion is 3 or 4, or the number of symbols included in the downlink portion The minimum value of M is 3 or 4.
The apparatus according to any one of claims 31 to 35, wherein when the subcarrier spacing of the frequency domain resources corresponding to the consecutive plurality of subframes is 30 kHz,

If the coverage of the cell in which the device is located is 5 km km, the interval portion includes a value of the symbol number K of 1;

If the coverage of the cell in which the device is located is 10 km, the interval portion includes a value of the symbol number K of 2;

If the coverage of the cell in which the device is located is 15 km, the interval portion includes a value of the symbol number K of 3;

If the coverage of the cell in which the device is located is 20 km, the interval portion includes the value 4 of the symbol number K.
The apparatus according to any one of claims 31 to 35, wherein when the subcarrier spacing of the frequency domain resources corresponding to the consecutive plurality of subframes is 60 kHz,

If the coverage of the cell in which the device is located is 2.5 km, the interval portion includes a value of the symbol number K of 1;

If the coverage of the cell in which the device is located is 5 km, the interval portion includes the value 2 of the symbol number K.
The apparatus according to any one of claims 31 to 35, wherein when the subcarrier spacing of the frequency domain resources corresponding to the consecutive plurality of subframes is 15 kHz,

If the coverage of the cell in which the device is located is 10 km, the interval portion includes a value of 1 for the number K of symbols.
The apparatus according to any one of claims 31 to 38, the communication unit is further configured to receive first indication information, the first indication information being used to indicate the number K of symbols included in the interval portion; or

And configured to receive the second indication information, where the second indication information is used to indicate at least one of the following information:

The ratio of the number N of symbols included in the uplink portion to the number M of symbols included in the downlink portion, the number N of symbols included in the uplink portion, and the number M of symbols included in the downlink portion.
The apparatus according to any one of claims 31 to 39, each of the plurality of subframes comprising at least two time units, each time unit comprising at least one symbol, the at least two time units being included P first time units for uplink transmission and Q second time units for downlink transmission, P≥1, Q≥1, the symbols included in the uplink part belong to the P first time units, The symbols included in the downlink part belong to the Q second time units, the symbols included in the interval part belong to the P first time units, or the symbols included in the interval part belong to the Q second time units .