WO2018171603A1 - Procédé d'envoi de données et appareil associé, et procédé de réception de données et appareil associé - Google Patents
Procédé d'envoi de données et appareil associé, et procédé de réception de données et appareil associé Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
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Definitions
- the present application relates to the field of communications, and more particularly to a method of transmitting data and apparatus therefor, and a method of receiving data and apparatus therefor.
- 5G mobile communication systems need to support enhanced mobile broadband (eMBB) services, ultra reliable and low latency communications (URLLC) services, and mass machine type communications (mMTC) services. .
- eMBB enhanced mobile broadband
- URLLC ultra reliable and low latency communications
- mMTC mass machine type communications
- Typical URLLC services include wireless control in industrial manufacturing or production processes, motion control for driverless and drones, and tactile interaction applications such as remote surgery.
- the main features of these services are ultra-high reliability and low latency. At the time, the amount of transmitted data is small and bursty.
- the URLLC service requires extremely high latency.
- the transmission delay is required to be within 0.5 milliseconds (millisecond, ms).
- the transmission delay is required to be within 1 ms.
- the present application provides a requirement to meet the high reliability and low latency of the service.
- a first aspect includes: a network device sending first control information to a terminal device, where the first control information is used to indicate a first parameter; and the network device uses the first parameter in The first information block is sent to the terminal device on the first time-frequency resource group; the network device receives the first information sent by the terminal device, where the first information indicates the first time-frequency resource Grouping a corresponding channel state, or the first information indicating a second parameter, the second parameter being obtained based on the first parameter; or, the first information indicating the first parameter and the first time The matching degree of the corresponding channel state of the frequency resource group; wherein the first information block is one of the following: a transport block TB, a coding block CB, and a coding block group CBG.
- the method further includes: the network device receiving the terminal device in the The hybrid automatic repeat request HARQ feedback information of the first information block sent on the first time-frequency resource group.
- the first control information further indicates that the first parameter is used to send to the terminal device on the second time-frequency resource group.
- the first information block the method further includes: the network device sending second control information to the terminal device, where the second control information indicates the second parameter or a third parameter; The second parameter or the third parameter sends the first information block to the terminal device on the second time-frequency resource group.
- the third parameter is obtained based on the first information.
- the terminal device can send the first information to the network device in time (for example, in the process of receiving the first information block on the first time-frequency resource).
- the network device receives the first information sent by the terminal device, and generates second control information according to the first information, where the second control information is already generated by the network device according to the first information, where the network device sends the control information to the terminal device.
- a second control information instructing the terminal device to receive the first information block by using the second parameter or the third parameter on the second time-frequency resource group, and then decoding and decoding the first information block sent on the second time unit is correct
- the probability will increase, and the reliability of service transmission will be improved accordingly.
- the method further includes: after receiving the first information, the network device sends a third to the terminal device Control information, the third control information indicating that the first information block is sent on a third time-frequency resource group; and the network device sends the first information block on the third time-frequency resource group.
- the terminal device can send the first information to the network device in time (for example, before the terminal device sends the HARQ feedback information of the first information block on the first time-frequency resource), therefore, the network device can be based on the first
- the information is transmitted in the next time in the third time-frequency resource group scheduling.
- the transmission parameter of the scheduling may be adjusted according to the first information in time, which is beneficial to achieving reliable target transmission within the specified delay range.
- the sending the third control information to the terminal device includes: when the network device receives the HARQ feedback information of the first information in the first time-frequency resource group Sending the third control information to the terminal device.
- the network device receives a field that is sent by the terminal device, where the field includes at least one first state, The first information, the field further includes at least one second state, used to indicate HARQ feedback information of the first information block sent on the fourth time-frequency resource group.
- the first information includes a channel quality indicator CQI or a signal dry noise of a part or all channels of the corresponding first time frequency resource group
- the first parameter includes a first MCS index
- the second parameter includes a second MCS index
- the first information includes a difference between the second MSC index and the first MCS index; Determining, by the first information, whether a transmission reliability of the first information block on the first time-frequency resource group satisfies a target reliability; or the first information indicating a first information block on the at least two time-frequency resource groups Whether the transmission reliability satisfies the target reliability, wherein the at least two time-frequency resource groups include the first time-frequency resource group.
- the fourth time-frequency resource group is located before the first time-frequency resource group in the time domain, and the fourth The HARQ feedback information of the first information block sent on the time-frequency resource group is ACK.
- a method for receiving data includes: receiving, by a terminal device, first control information sent by a network device, where the first control information is used to indicate a first parameter; and the terminal device uses the first parameter in Receiving, by the first time-frequency resource group, the first information block, where the terminal device sends the first information to the network device, where the first information indicates a channel state of the first time-frequency resource group, Or the first information indicates a second parameter, and the second parameter is obtained based on the first parameter; or the first information indicates that the first parameter is related to a channel state of the first time-frequency resource group. a matching degree; wherein the first information block is one of the following: a transport block TB, a coding block CB, and a coding block group CBG.
- the method further includes: the terminal device to the network device And transmitting hybrid automatic repeat request HARQ feedback information of the first information block received on the first time-frequency resource group.
- the first control information further indicates that the first parameter is sent to the terminal device on the second time-frequency resource group by using the first parameter
- the first information block further includes: the terminal device receiving second control information sent by the network device, the second control information indicating the second parameter or a third parameter;
- the first information block is received on the second time-frequency resource group using a second parameter or a third transmission.
- the third parameter is obtained based on the first information.
- the third device after the terminal device sends the first information to the network device, the third device sends the third information Controlling information, the third control information indicating that the first information block is sent on a third time-frequency resource group; and the terminal device receiving the first information block on the third time-frequency resource group.
- the receiving the third control information sent by the network device includes: sending, by the terminal device, the first information in the first time-frequency resource group to the network device Before receiving the HARQ feedback information, the terminal device is received to send the third control information.
- the receiving the third control information sent by the network device includes: sending, by the terminal device, the first information in the first time-frequency resource group to the network device Receiving, by the terminal device, the third control information when the HARQ feedback information is received.
- the terminal device sends a field to the network device, where the field includes at least one first state, The first information, the field further includes at least one second state, used to indicate HARQ feedback information of the first information block sent on the fourth time-frequency resource group.
- the channel quality of the corresponding part or all channels of the first time-frequency resource group indicates a CQI or a signal to interference and noise ratio SINR;
- the first parameter includes a first MCS index
- the second parameter includes a second MCS index
- the first information includes a difference between the second MSC index and the first MCS index; or
- the first information indicates whether the transmission reliability of the first information block on the first time-frequency resource group satisfies the target reliability; or the first information indicates the first information block on the at least two time-frequency resource groups. Whether the transmission reliability satisfies the target reliability, wherein the at least two time-frequency resource groups include the first time-frequency resource group.
- a network device a method for executing the foregoing network device, is provided.
- the network device may include a module for performing corresponding steps of the network device.
- a processing module a transmitting module, a receiving module, and the like.
- a fourth aspect provides a terminal device, a method for the foregoing terminal device, and specifically, the terminal device may include a module for performing corresponding steps of the terminal device.
- the terminal device may include a module for performing corresponding steps of the terminal device.
- a processing module for example, a transmitting module, a receiving module, and the like.
- a network device comprising a memory and a processor for storing a computer program for calling and running the computer program from a memory, such that the network device performs the method of the network device described above.
- a terminal device comprising a memory and a processor for storing a computer program for calling and running the computer program from the memory such that the terminal device performs the method of the terminal device described above.
- a computer readable storage medium having instructions stored therein that, when executed on a computer, cause the computer to perform the methods described in the above aspects.
- a computer program product comprising instructions, when executed on a computer, causes the computer to perform the methods described in the various aspects above.
- the embodiment of the present application provides a method for transmitting data, which can be beneficial to improve the reliability of the service while satisfying the requirement of low latency of the service.
- FIG. 1 is a schematic diagram of a wireless communication system applied to an embodiment of the present application.
- FIG. 2 is a schematic structural diagram of a network device in the wireless communication system shown in FIG. 1.
- FIG. 3 is a schematic structural diagram of a terminal device in the wireless communication system shown in FIG. 1.
- FIG. 4 is a schematic flowchart of a method according to an embodiment of the present application.
- Figure 5 shows a schematic diagram of one method of transmitting data.
- Figure 6 shows a schematic diagram of a method of one embodiment of the present application.
- Figure 7 shows a schematic diagram of a method of one embodiment of the present application.
- Figure 8 shows a schematic diagram of a method of one embodiment of the present application.
- Figure 9 shows a schematic diagram of one method of transmitting data.
- Figure 10 shows a schematic diagram of a method of one embodiment of the present application.
- Figure 11 shows a schematic diagram of a method of one embodiment of the present application.
- Figure 12 shows a schematic diagram of one method of transmitting data.
- Figure 13 shows a schematic diagram of a method of one embodiment of the present application.
- Figure 14 shows a schematic diagram of a method of one embodiment of the present application.
- Figure 15 shows a schematic diagram of a method of one embodiment of the present application.
- FIG. 16 is a schematic block diagram of a terminal device 1600 according to an embodiment of the present application.
- FIG. 17 shows a schematic block diagram of a network device 1700 of an embodiment of the present application.
- GSM global system of mobile communication
- CDMA code division multiple access
- WCDMA wideband code division multiple access
- GPRS general packet radio service
- LTE long term evolution
- LTE-A advanced long term evolution
- UMTS universal mobile telecommunication system
- 5G next-generation communication system
- D2D device to device
- M2M machine to machine
- MTC machine type communication
- V2V vehicle to vehicle
- the embodiments of the present application describe various embodiments in combination with a sending device and a receiving device, where the sending device may be one of a network device and a terminal device, and the receiving device may be the other one of the network device and the terminal device, for example, in the present application.
- the sending device may be a network device, and the receiving device may be a terminal device; or the sending device may be a terminal device, and the receiving device may be a network device.
- a terminal device may also be called a user equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, and a user. Agent or user device.
- UE user equipment
- the terminal device may be a station (STA) in a wireless local area network (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 communication system, For example, a terminal device in a fifth-generation (5G) communication network or a terminal device in a public land mobile network (PLMN) network that is evolving in the future.
- 5G fifth-generation
- PLMN public land mobile network
- 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.
- the network device may be a device for communicating with the mobile device, and the network device may be an access point (AP) in the WLAN, a Base Transceiver Station (BTS) in GSM or CDMA, or may be in WCDMA.
- AP access point
- BTS Base Transceiver Station
- a base station (NodeB, NB) which may also be an evolved 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 device in a future 5G network (g Node B, gNB or gNodeB) or network equipment in a future evolved PLMN network.
- g Node B, gNB or gNodeB future 5G network
- the network device provides a service for the cell
- the terminal device communicates with the network device by using a transmission resource (for example, a frequency domain resource, or a spectrum resource) used by the cell.
- the cell may be a cell corresponding to a network device (for example, a base station), and the cell may belong to a macro base station or a base station corresponding to a small cell, where the small cell may include: a metro cell and a micro cell ( Micro cell), Pico cell, Femto cell, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.
- 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 includes applications such as browsers, contacts, word processing software, and instant messaging software.
- the specific structure of the execution body 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 is executed.
- the method for transmitting a signal according to the embodiment of the present application may be performed.
- the execution body of the method for wireless communication 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 The functional module that executes the program.
- a computer readable medium may include, but is not limited to, a magnetic storage device (eg, a hard disk, a floppy disk, or a magnetic tape, etc.), such as a compact disc (CD), a digital versatile disc (DVD). Etc.), smart cards and flash memory devices (eg, erasable programmable read-only memory (EPROM), cards, sticks or key drivers, etc.).
- a magnetic storage device eg, a hard disk, a floppy disk, or a magnetic tape, etc.
- CD compact disc
- DVD digital versatile disc
- Etc. smart cards and flash memory devices (eg, erasable programmable read-only memory (EPROM), cards, sticks or key drivers, etc.).
- 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.
- the embodiment of the present application provides a method for transmitting data and a method for receiving data, and corresponding network devices and terminal devices.
- FIG. 1 is a schematic diagram of a wireless communication system applied to an embodiment of the present application.
- the wireless communication system 100 includes a network device 102, which may include one antenna or 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 terminal device 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.
- terminal device 116 is in communication with antennas 112 and 114, wherein antennas 112 and 114 transmit information to terminal device 116 over a forward link (also referred to as downlink) 118 and through the reverse link (also Information referred to as uplink 120 receives information from terminal device 116.
- 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.
- forward link 118 can use a different frequency band than reverse link 120, and forward link 124 can be used differently than reverse link 126. Frequency band.
- FDD frequency division duplex
- the forward link 118 and the reverse link 120 can use a common frequency band, a forward chain.
- the path 124 and the reverse link 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.
- the antenna group can be designed to communicate with terminal devices in sectors of the network device 102 coverage area.
- the network device can transmit signals to all of the terminal devices in its corresponding sector through a single antenna or multiple antenna transmit diversity.
- the transmit antenna of network device 102 may also utilize beamforming to improve the signal to noise ratio of forward links 118 and 124.
- the network device 102 utilizes beamforming to transmit signals to the randomly dispersed terminal devices 116 and 122 in the associated coverage area, as compared to the manner in which the network device transmits signals to all of its terminal devices through single antenna or multi-antenna transmit diversity, Mobile devices in neighboring cells are subject to less interference.
- network device 102, terminal device 116, or terminal device 122 may be a wireless communication transmitting device and/or a wireless communication receiving device.
- the wireless communication transmitting device can encode the data for transmission.
- 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.
- 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.
- FIG. 2 is a schematic structural diagram of a network device in the above wireless communication system.
- the network device is capable of performing the method for transmitting data provided by the embodiment of the present application.
- the network device includes a processor 201, a receiver 202, a transmitter 203, and a memory 204.
- the processor 201 can be communicatively coupled to the receiver 202 and the transmitter 203.
- the memory 204 can be used to store program code and data for the network device. Therefore, the memory 204 may be a storage unit inside the processor 201, or may be an external storage unit independent of the processor 201, or may be a storage unit including the processor 201 and an external storage unit independent of the processor 201. component.
- the network device may further include a bus 205.
- the receiver 202, the transmitter 203, and the memory 204 may be connected to the processor 201 via a bus 205;
- the bus 205 may be a Peripheral Component Interconnect (PCI) bus or an extended industry standard structure (Extended Industry Standard) Architecture, EISA) bus, etc.
- PCI Peripheral Component Interconnect
- EISA Extended Industry Standard Architecture
- the bus 205 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 2, but it does not mean that there is only one bus or one type of bus.
- the processor 201 can be, for example, a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), and a field programmable gate. Field Programmable Gate Array (FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
- the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
- the receiver 202 and the transmitter 203 may be circuits including the above-described antenna and transmitter chain and receiver chain, which may be independent circuits or the same circuit.
- FIG. 3 is a schematic structural diagram of a terminal device in the above wireless communication system.
- the terminal device is capable of performing the data receiving method provided by the embodiment of the present application.
- the terminal device may include a processor 301, a receiver 302, a transmitter 303, and a memory 304.
- the processor 301 can be communicatively coupled to the receiver 302 and the transmitter 303.
- the terminal device may further include a bus 305, and the receiver 302, the transmitter 303, and the memory 304 may be connected to the processor 301 via the bus 305.
- the bus 305 may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus or the like.
- PCI Peripheral Component Interconnect
- EISA Extended Industry Standard Architecture
- the bus 305 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 3, but it does not mean that there is only one bus or one
- the memory 304 can be used to store program code and data for the terminal device. Therefore, the memory 304 may be a storage unit inside the processor 301, or may be an external storage unit independent of the processor 301, or may be a storage unit including the processor 301 and an external storage unit independent of the processor 201. component. Receiver 302 and transmitter 303 can be separate circuits or the same circuit.
- the information block may be a transport block (TB), a code block (CB), and a code block group (CBG), where the CB includes a set of information bits, where The group information bits are used together for primary channel coding, or the group of information bits are channel-coded together by the transmitting device, corresponding to one channel-coded bit block;
- the CBG includes at least one coding block, which may include multiple coding blocks;
- At least one CB may also include at least one CBG, which is not limited in this application.
- the time-frequency resource group includes one or more time units in the time domain, where each time domain unit may include one or more time domain symbols, and may also include one or more time slots (slots). ), may also include one or more mini-slots, or include one or more sub-frames.
- the first time-frequency resource group includes multiple time-domain units, the multiple time-domain units may be continuous or discrete, which is not limited in this application.
- the time domain symbol may be an orthogonal frequency division multiplexing (OFDM) symbol, or may be a single-carrier frequency-division multiplexing (SC-FDM) symbol.
- OFDM orthogonal frequency division multiplexing
- SC-FDM single-carrier frequency-division multiplexing
- the time-frequency resource group occupies a certain bandwidth in the frequency domain, and the bandwidth may be one or more physical resource blocks (PRBs), and may be one or more physical resource block groups (physical). Resource block group (PRBG), which can be one or more subbands.
- PRBs physical resource blocks
- PRBG physical resource block group
- the size and location of the frequency domain resources on each time domain unit may be the same or different.
- the network device may schedule downlink transmission of the terminal device by performing frequency domain resource frequency hopping on different time domain units.
- the time-frequency resource group also carries a demodulation pilot or a demodulation reference signal used when the terminal device performs channel estimation when receiving downlink data.
- the corresponding channel of the first time-frequency resource group may refer to only part or all of the channels experienced by the first information block carried by the first time-frequency resource group.
- the channel corresponding to the first time-frequency resource group may also refer to part or all of the channels experienced by the first information block carried by the first time-frequency resource group and the first time-frequency resource in the time domain. All channels experienced by the first information block carried by one or more time-frequency resource groups before the group.
- the channel state of the first time-frequency resource group is a channel state of a channel corresponding to the first time-frequency resource group.
- FIG. 4 is a schematic flowchart of a method according to an embodiment of the present application. As shown in FIG. 4, the method 400 includes:
- Step 401 The network device sends first control information to the terminal device, where the first control information is used to indicate the first parameter.
- the first control information may be carried in the first control channel, that is, the network device sends the first control information to the terminal device by using the first control channel.
- the first control channel may be a downlink downlink control channel (PDCCH) or other downlink channel for carrying physical layer control information, which is not limited in this application.
- PDCCH downlink downlink control channel
- the first control information is used to schedule transmission of the first information block in the first time-frequency resource group
- the terminal device is configured to receive, according to the first control information, the first information block in the first time-frequency resource group
- the control information includes at least one of the following: the transmission resource indication information of the first information block in the first time-frequency resource group, the HARQ process index of the first information block in the first time-frequency resource group, and the first The HARQ feedback resource indication information, the first parameter, and the like of the first information block in the time-frequency resource group; wherein the first parameter is used by the terminal device to the first information block in the first time-frequency resource group according to the first parameter Decoding and decoding, etc.
- the first parameter includes at least one of the following information: a modulation and coding scheme (MCS) information of the first information block in the first time-frequency resource group, and a first time Precoding information of the first information block in the frequency resource group, redundancy version information of the first information block in the first time-frequency resource group, and whether
- the first control information is used to indicate the first parameter, which can indicate that the terminal device receives the first information block in the first time-frequency resource group according to the first parameter in the first control information, and can also represent that the network device is The first parameter in the first control information sends the first information block in the first time-frequency resource group, which is not limited in this application.
- Step 402 The network device sends the first information block to the terminal device on the first time-frequency resource group by using the first parameter.
- the network device transmits the first information block on the first time-frequency resource group using the first parameter.
- the terminal device after receiving the first control information, the terminal device receives the first information block carried on the first time-frequency resource group according to the first control information, specifically, the terminal device uses the first time-frequency resource group.
- the carried demodulation pilot estimates the channel experienced by the first information block in the first time-frequency resource group (ie, estimates the channel impulse response experienced by the first information block in the first time-frequency resource group), and Demodulating and decoding the first information block carried in the first time-frequency resource group according to the channel estimation result and the first parameter.
- the terminal device estimates the channel state of the first time-frequency resource group by using the demodulation pilot, for example, according to demodulation.
- the pilot generates the first information by using the signal to interference plus noise ratio (SINR) information estimated by the channel corresponding to the first time-frequency resource group, and sends the first information to the network device.
- SINR signal to interference plus noise ratio
- the network device receives the first information sent by the terminal device, where the first information indicates a channel state corresponding to the first time-frequency resource group, or the first information indicates a second parameter, the second parameter is obtained based on the first parameter; or, the first information indicates a matching degree between a channel state of the first time-frequency resource group and a first parameter.
- the terminal device may use the pilot (demodulation pilot) carried in the first time-frequency resource group, or use the first time-frequency resource group and the time-domain resource group before the first time-frequency resource group. And performing pilot estimation on the pilot (demodulation pilot) carried on the time-frequency resource group carrying the first information block, and determining a corresponding channel state of the first time-frequency resource group according to the channel estimation result.
- the channel state may be channel state information (CSI), or channel quality indicator (CQI), SINR, sum of interference and noise energy, beam state information (BSI),
- CSI channel state information
- CQI channel quality indicator
- SINR system for CSI
- BSI beam state information
- the beam quality information and the like are not limited in this application.
- the lobe state information includes at least one of lobe quality information or precoding matrix information, and the lobe quality information is used by the terminal device to carry at least one lobe of the first information block according to the pilot (reference signal). Quality is measured.
- the terminal device may allocate a part or all of the channels of the first time-frequency resource group and all channels corresponding to all the time-frequency resource groups of the first information block that are located before the first time-frequency resource group in the time domain.
- the channel state is determined as the corresponding channel state of the first time-frequency resource group.
- the terminal device allocates part or all of the first time-frequency resource group and one or more (for example, Z) time-frequency carriers of the first information block that are located before the first time-frequency resource group in the time domain.
- the channel state of the corresponding channel of the resource group is determined as the corresponding channel state of the first time-frequency resource group.
- the terminal device may determine the value Z according to the indication of the network device, where Z is a positive integer.
- the first information includes channel quality indication or channel state information of a part or all channels corresponding to the first time-frequency resource group.
- the first information may include a CQI corresponding to the first time-frequency resource group, and may also include a corresponding CQI of the first time-domain resource group and a time-domain resource group that is located before the first time-domain resource group in the time domain.
- the difference between CQIs is not limited in this application.
- the first information includes an SINR of a part or all channels corresponding to the first time-frequency resource group.
- the first information may include a corresponding average SINR of the first time-frequency resource group, and may also include an average SINR of each one or more frequency domain sub-bands, and may also include a corresponding average SINR of the first time-domain resource group.
- the difference in the average SINR of the time domain resource group in the time domain in the time domain is not limited in this application.
- the first parameter includes a first MCS index
- the second parameter includes a second MCS index
- the first information includes the second MCS index and the first MCS index difference.
- the first MCS index is 5, the second MCS index is 4, and the second MCS index and the first MCS index difference ⁇ MCS are -1. It should be understood that the foregoing numerical values are merely exemplary, and the first MCS index and the second MCS index specific values are not limited in the embodiment of the present application.
- the terminal device may determine the second MCS index according to the obtained channel state information of the first time-frequency resource group and/or the target reliability of the first information block in the preset first time-frequency resource group. For example, the terminal device determines, by the modulation and coding scheme corresponding to the MCS index, the SINR corresponding to the target reliability of the first information block in the first time-frequency resource group and the channel state corresponding to the first time-frequency resource group (for example, the first Comparing the corresponding SINR of the time-frequency resource group, the modulation coding scheme corresponding to the selected second MCS index can reach the SINR corresponding to the target reliability of the first information block in the first time-frequency resource and the first time-frequency resource group
- the SINR is the closest.
- the second MCS index selected by the terminal device is that the corresponding modulation coding scheme can reach the highest value in the MCS index of the target reliability of the first information block in the first time-frequency resource.
- the above target reliability can also be configured by the network device.
- the first information indicating ⁇ MCS may include 2 bits, and the 4 states of the 2 bits may respectively indicate ⁇ MCS as “less than -2”, “-2”, “-1”, “greater than or equal to 0” ".
- “-1" is used to indicate that the second MCS index is decreased by 1 compared to the first MCS index
- "-2” is used to indicate the second
- the MCS index is reduced by 2 compared to the first MCS index
- “less than -2” is used to indicate that the reduction of the second MCS index is greater than 2 compared to the first MCS index
- "greater than or equal to 0” is used to indicate the first
- the MCS index can achieve target reliability.
- the first information used to indicate ⁇ MCS may include 2 bits, and the 4 states of the 2 bits may respectively indicate ⁇ MCS, “less than or equal to -2”, “-1”, “0”, “ 1".
- "less than or equal to -2” is used to indicate that the reduction amount of the second MCS index is greater than or equal to 2 with respect to the first MCS index.
- "-1" is used to indicate that the second MCS index is reduced by 1 compared to the first MCS index;
- "0" is used to indicate that the first MCS index can reach the target reliability;
- “1” is used to indicate the second MCS index phase.
- the first parameter includes first precoding information
- the second parameter includes second precoding information
- the first information may include the second precoding information.
- the first parameter includes a precoding matrix index
- the second parameter includes a second precoding matrix index
- the first information may include the second precoding matrix index and the first precoding matrix index. Difference.
- the terminal device may determine, according to the obtained channel state information of the first time-frequency resource group and/or the target reliability of the first information block in the preset first time-frequency resource group, the second pre-coding matrix. index.
- the first precoding matrix index is 7
- the second precoding matrix index is 4, and the second precoding matrix index and the first precoding matrix index difference is -3. It should be understood that the above-mentioned numerical values are only exemplary, and the specific values of the first pre-coding matrix index and the second pre-coding matrix index are not limited in the embodiment of the present application.
- the first parameter includes a first redundancy version index of the first information block
- the second parameter includes a second redundancy version index of the first information block.
- the first information may include the second redundancy version index of the first information block.
- the terminal device may determine the first information according to the obtained channel state information of the first time-frequency resource group and/or the target reliability of the first information block in the preset first time-frequency resource group.
- the second redundancy version index of the block may be determined according to the obtained channel state information of the first time-frequency resource group and/or the target reliability of the first information block in the preset first time-frequency resource group.
- the first information indicates a matching degree of a channel state corresponding to the first parameter and the first time-frequency resource group.
- the first parameter includes a first MCS index
- the first information indicates that the matching degree of the first parameter and the channel state corresponding to the first time-frequency resource group refers to: the modulation coding scheme indicated by the first MCS index is in the first The relationship between the reliability achieved in the corresponding channel state of the one-time resource group and the target reliability of the first information block transmitted on the first time-frequency resource group.
- the first information includes 1 bit
- Bit 1 indicates that the channel state matching degree corresponding to the first time-frequency resource group of the first parameter is 1; if the modulation coding scheme corresponding to the first MCS index can achieve reliability less than that transmitted on the first time-frequency resource group
- the target reliability of the first information block can be represented by bit 0, and the matching degree of the channel state corresponding to the first parameter and the first time-frequency resource group is 0.
- the terminal device compares the SINR corresponding to the modulation and coding scheme corresponding to the first MCS index to the target reliability, and the channel state corresponding to the first time-frequency resource group (for example, the SINR corresponding to the first time-frequency resource group), if If the absolute value of the difference between the two is less than or equal to the threshold threshold, the first parameter matches the channel state corresponding to the first time-frequency resource group (for example, the matching degree is 1); if the absolute value of the difference between the two is greater than the threshold threshold, Then, the first parameter does not match the channel state corresponding to the first time-frequency resource group (for example, the matching degree is 0).
- the threshold threshold may be specified by the network device by using high-layer signaling (such as radio resource control signaling) or a communication protocol standard, and the threshold may be 1 dB, 1.5 dB, 2 dB, or the like.
- the first information includes 2 bits
- the network device passes high-level signaling (such as radio resource control signaling) or a predetermined threshold interval, for example, the value in the first interval is between 1 dB and 2 dB, and second.
- the value of the interval is between 2 dB and 3 dB
- the value of the third interval is less than or equal to 1 dB
- the value in the fourth interval is greater than or equal to 3 dB.
- the terminal device compares the SINR corresponding to the modulation and coding scheme corresponding to the first MCS index to the target reliability, and the channel state corresponding to the first time-frequency resource group (for example, the SINR corresponding to the first time-frequency resource group), if the difference between the two If the absolute value is less than or equal to 1 dB, the terminal device determines that the first MCS index is used to reach the target reliability of the first information block on the first time-frequency resource group, and the first parameter and the first time-frequency The corresponding channel state matching degree of the resource group is 11; if the absolute value of the difference between the two is greater than 1 dB and less than 2 dB, the channel state matching degree corresponding to the first parameter and the first time-frequency resource group is 10; If the absolute value is greater than 2 dB and less than 3 dB, the channel state matching degree corresponding to the first time-frequency resource group is 01; if the absolute value of the difference between the two is greater than 3 dB, the first parameter corresponds to the first time
- the first parameter when the first information indicates a matching degree of a channel state corresponding to a first time-frequency resource group, the first parameter includes first pre-coding information, where The first information indicating that the first parameter matches the channel state of the first time-frequency resource group means that the pre-coding scheme indicated by the first pre-coding information is reliable in the channel state corresponding to the first time-frequency resource group.
- the relationship between the degree and the target reliability of the first information block transmitted on the first time-frequency resource group.
- the matching degree of the channel state corresponding to the first parameter and the first time-frequency resource group may also be a match or a mismatch.
- the first information may indicate whether the transmission reliability of the first information block on the first time-frequency resource group satisfies the target reliability, or the first information indicates at least two Whether the transmission reliability of the first information block on the time-frequency resource group satisfies the target reliability, wherein the at least two time-frequency resource groups include the first time-frequency resource group. If the transmission reliability of the first information block on the first time-frequency resource group sent by using the first parameter can meet the target reliability, the channel state corresponding to the first time-frequency resource of the first parameter is a match. If the transmission reliability of the first information block on the first time-frequency resource group sent by using the first parameter cannot meet the target reliability, the channel state corresponding to the first time-frequency resource of the first parameter is a mismatch.
- the representation method of the first information may also be 2 bits or more, which is not limited in this application.
- the network device receives a field sent by the terminal device, where the field includes at least one first state for indicating the first information, and the field further includes at least one second state for And indicating HARQ feedback information of the first information block sent on the fourth time-frequency resource group.
- the fourth time-frequency resource group is located before the first time-frequency resource group in the time domain.
- the HARQ feedback information of the first information block sent on the fourth time-frequency resource group is an ACK.
- This field may contain 1 bit or 2 bits, or 2 bits or more.
- this field can contain 2 bits.
- the field uses one state (ie, the first state) to indicate ACK information for the first information block on the fourth time-frequency resource group, and the remaining state (ie, the second state) to indicate the first information. More specifically, the remaining state is used to indicate a second parameter of the first information.
- the second parameter may be a difference between the second MCS index and the first MCS index.
- the field can contain 2 bits or 3 bits.
- the field uses one state (ie, the first state) to indicate the ACK information of the first information block on the fourth time-frequency resource group, and uses the remaining state (ie, the second state) to indicate the corresponding channel state of the first time-frequency resource group. information. More specifically, the remaining state is used to indicate SINR or CQI information.
- the field can contain 1 bit.
- the field uses one state (ie, the first state) to indicate ACK information of the first information block on the fourth time-frequency resource group, and another state (ie, the second state) to indicate the first parameter indicated by the first control information.
- the channel state matching corresponding to the first time-frequency resource group (for example, the matching degree is 1).
- the corresponding channel state of the first time-frequency resource group may include only part or all of the channel states of the first time-frequency resource group
- the corresponding channel state of the first time-frequency resource group may also refer to the first time-frequency resource group.
- the first information may indicate the first The matching degree between the channel state of the time-frequency resource group and the at least one time-frequency resource group preceding the first time-frequency resource group and the first parameter.
- the method further includes: the network device sending a notification message to the terminal device, where the notification message includes the target reliability.
- the block error rate is used to characterize the probability of successful demodulation decoding. For example, if the target BLER is 10-3, the target probability of failing to demodulate and decode successfully is 10-3, or it can be successful. The decoding target probability is 99.9%.
- the network device may indicate, to the terminal device, the target reliability of the first information block in the first time-frequency resource group by using the high-layer signaling, for example, the high-layer signaling is wireless.
- a resource control (RRC) message the network device may also indicate the target reliability to the terminal device by using the first control information; the network device may further indicate the device to the terminal device by using another media control layer or physical layer control information.
- RRC resource control
- the first control information further indicates that the first information block is sent to the terminal device on the second time-frequency resource group by using the first parameter, that is, the first control information.
- the method is further configured to schedule transmission of the first information block of the second time-frequency resource group, the method further comprising, in step 404, the network device generating the second control information.
- the second control information may be generated according to the first information.
- Step 405 The network device sends second control information to the terminal device, where the second control information indicates the second parameter or the third parameter, and the third parameter is obtained based on the first information.
- Step 406 The network device sends the first information block to the terminal device on the second time-frequency resource group by using a second parameter or a third parameter.
- the number of time domain units included in the first time-frequency resource group and the second time-frequency resource group may be the same or different, and the first time-frequency resource group and the second time-frequency resource group may be adjacent in the time domain. , may not be adjacent, this application is not limited.
- the second control information may be used by the terminal device to receive, by using the second parameter, the first information block sent by the network device on the second time-frequency resource group time-frequency resource group.
- the network device may generate the third parameter according to the second parameter, or determine the third parameter by itself, if the network device The second control information generated by the first information includes the third parameter, and the second control information may be used by the terminal device to receive, by using the third parameter, the first information block sent by the network device on the second time-frequency resource group.
- the third parameter may be determined according to the channel state corresponding to the first time-frequency resource group of the first information, or the third parameter may also be the first parameter and the first parameter indicated by the first information.
- the matching degree of the corresponding channel state of the time-frequency resource group is determined, which is not limited in this application.
- the application scenario of steps 404 to 406 is a case where the first control information can schedule data transmission of a plurality of time-frequency resource groups (such as the first time-frequency resource group and the second time-frequency resource group), in which case If the terminal device receives the first information block sent by the network device on the first time-frequency resource group, the first information block carried on the first time-frequency resource group is decoded and decoded according to the first control information. And confirming the decoding result, then, optionally, step 410 is performed, the network device receiving a hybrid automatic repeat request of the first information block sent by the terminal device on the first time-frequency resource group ( Hybrid automatic repeat request, HARQ) feedback information.
- Hybrid automatic repeat request Hybrid automatic repeat request
- the HARQ feedback information may be an acknowledgement (ACK) or a non-acknowledgement (not acknowledged, NACK).
- ACK acknowledgement
- NACK non-acknowledgement
- the channel state information reported by the terminal device stored by the network device cannot satisfy the bearer due to the time variation of the channel.
- the URLLC service requires a very short transmission delay, if the network device triggers the channel state report and then schedules the URLLC data transmission, the time for scheduling the first information block transmission is reduced (that is, the delay requirement of the first information block in the URLLC service is reduced) Within the maximum number of transmissions within the URLLC service, it will be difficult to achieve the correct transmission of the first information block.
- the network device may schedule the terminal device to be more than one transmission at a time. For example, the network device indicates, by using the first control information, that the terminal device receives the first information block by using the first parameter at least in the first time-frequency resource group and the second time-frequency resource group. Due to the inaccuracy of the channel state information used for scheduling the URLLC, the transmission of the first information block on the first time-frequency resource group cannot reach the probability that the network device sets the target reliability of the scheduling.
- the terminal device fails to decode the first information block carried by the first time-frequency resource group with a large probability, and sends a feedback information NACK to the network device. . Since the terminal device needs a certain time to demodulate and decode the first information block carried on the first time-frequency resource group, when the network device receives the NACK, the network device may have started using the first parameter in the second time-frequency resource. The group sends the first information block. Correspondingly, the terminal device can only receive the first information block on the second time-frequency resource group by using the first parameter. In this case, the terminal device still fails to decode the first information block with a large probability.
- the terminal device can send the first information to the network device in time (for example, in the process of receiving the first information block on the first time-frequency resource).
- the network device receives the first information sent by the terminal device, and generates second control information according to the first information, where the second control information is already generated by the network device according to the first information, where the network device sends the control information to the terminal device.
- a second control information instructing the terminal device to receive the first information block by using the second parameter or the third parameter on the second time-frequency resource group, and then decoding and decoding the first information block sent on the second time unit is correct
- the probability will increase, and the reliability of service transmission will be improved accordingly.
- the second control information is used to schedule transmission of the first information block in the second time-frequency resource group
- the terminal device is configured to receive the first information block in the second time-frequency resource group according to the second control information, and second.
- the control information includes at least a second parameter or a third parameter, where the second parameter or the third parameter is used by the terminal device to decode and decode the first information block in the first time-frequency resource group according to the first parameter. Wait.
- the third parameter includes at least one of the following information: modulation coding scheme information of the first information block in the second time-frequency resource group, and the second time-frequency resource group Precoding information of an information block, redundancy version information of a first information block in a second time-frequency resource group, and the like.
- the method further includes step 407, the network device generates Third control information.
- the network device may generate the third control information according to the first information, or may generate the third control information by itself.
- step 408 is performed, and third control information is sent to the terminal device, where the third control information indicates that the third time-frequency resource group is sent on the time-frequency resource group.
- the first information block is described.
- Step 409 The network device sends the first information block on the third time-frequency resource group.
- the terminal device receives the first information block sent by the network device on the third time-frequency resource group according to the third control information, and decodes the first information block sent on the third time-frequency resource group according to the third control information. And decoding.
- the application scenario of steps 407 to 409 is that the first downlink control information only schedules data transmission of the first time-frequency resource group time-frequency resource group, in this case, if the terminal device receives the network device in the first After decoding, decoding, and decoding the first information block carried on the first time-frequency resource group according to the first control information, the first information block sent on the first-time resource group is decoded, and then the decoding result is confirmed.
- the network device receives the hybrid automatic repeat request HARQ feedback information of the first information block sent by the terminal device on the first time-frequency resource group.
- the HARQ feedback information may be an ACK or a non-acknowledgment response NACK.
- the terminal device fails to decode the first information block on the first time-frequency resource group with a large probability (the network device stores the The channel state information reported by the URLLC terminal cannot meet the high reliability requirement of the URLLC downlink data packet, and the terminal device sends the NACK information to the network device. Since the delay requirement of the URLLC service is determined, and the terminal device needs to demodulate and decode the received first information block for a certain time, when the network device receives the NACK, the network device reschedules the transmission time of the first information block. There are not many, it will be difficult to achieve the correct transmission of the first information block in the delay request of the URLLC service.
- the terminal device can send the first information to the network device in time (for example, before the terminal device sends the HARQ feedback information of the first information block on the first time-frequency resource), therefore, the network device can be based on the first
- the information is transmitted in the next time in the third time-frequency resource group scheduling.
- the transmission parameter of the scheduling may be adjusted according to the first information in time, which is beneficial to achieving reliable target transmission within the specified delay range.
- the HARQ feedback information is NACK
- the decoding error of the first information block sent on the first time-frequency resource group is explained, and the demodulation of the first information block carried by the terminal device on the time-frequency resource group is performed.
- decoding requires a certain time, when the network device receives the NACK and the time interval T of transmitting the first information block on the first time-frequency resource group is large, and if the retransmission of the first information block is started, Then at least a time interval T is separated from the last transmission of the first information block.
- the network device receives the first information sent by the terminal device before receiving the NACK feedback, and assumes that the time interval between the time when the network device receives the first information and the time when the first information block is sent on the first time-frequency resource group is t, then t ⁇ T, the network device determines, according to the first information, that retransmission of the first information block needs to be scheduled, and generates third control information according to the first information, and schedules retransmission of the first information block by using the third control information, That is, the third control information instructs the network device to send the first information block on the third time-frequency resource group.
- the network device can timely retransmit the first information block after receiving the first information, so in the first information block.
- the delay requirement of the service can increase the number of retransmissions of the first information block, thereby improving the probability of decoding and decoding the first information block and improving service reliability.
- the service carried by the first information block may be a URLLC service, or may be a voice service in the eMBB service or other eMBB service sensitive to delay, and thus can meet the low time. Increase the reliability of service transmission under the requirements of the extension.
- FIG. 4 is a schematic flowchart of a method in an embodiment of the embodiment of the present application. It should be understood that FIG. 4 illustrates detailed communication steps or operations of the method, but these steps or operations are merely examples, and other embodiments of the present application may also perform other operations or variations of the various operations in FIG. Moreover, the various steps in FIG. 4 may be performed in a different order than that presented in FIG. 4, and it is possible that not all operations in FIG. 4 are to be performed.
- first”, “second”, and “third” are only used to distinguish different objects, for example, different control information, different time-frequency resource groups, and the like. This application should not be construed as limiting.
- Figure 5 shows a schematic diagram of one method of transmitting data.
- the network device sends first control information to the terminal device in the nth time-frequency resource group, where the first control information indicates that the terminal device is in the nth time-frequency resource group, and the n+1th time-frequency resource
- the group receives the first information block on the n+2 time-frequency resource group and the n+3 time-frequency group.
- Figure 6 shows a schematic diagram of a method of one embodiment of the present application.
- the network device sends first control information to the terminal device in the nth time-frequency resource component of the downlink carrier, where the first control information indicates that the terminal device is in the nth time-frequency resource group, the n+1th
- the first information block is received by using the first parameter on the time-frequency resource group, the n+2 time-frequency resource group, and the n+3 time-frequency group.
- the terminal device determines the first information according to the first parameter carried in the first control information, and returns the first information to the network device on the nth time-frequency resource group of the uplink carrier, where the network device is configured according to the first information. , determining the second control information.
- the network device sends the second control information to the terminal device in the n+1th time-frequency resource component of the downlink carrier, where the second control information indicates that the terminal device uses the second parameter or the third parameter in the nth time-frequency
- the resource group, the n+1th time-frequency resource group, the n+2 time-frequency resource group, and the n+3 time-frequency group receive the first information block.
- the network device can send the second control information to the terminal device on the (n+1)th time-frequency resource group, and use the second control information to schedule the first information block three times.
- the second control information is used to improve the accuracy of decoding the first information block by the terminal device and improve the reliability of the service transmission.
- Figure 7 shows a schematic diagram of a method of one embodiment of the present application.
- the network device sends the first control information to the terminal device in the nth time-frequency resource component of the downlink carrier, where the first control information indicates that the terminal device is in the (n+1)th time-frequency resource group, the nth
- the first information block is received using the first parameter on the +2 time-frequency resource group and the n+3 time-frequency group.
- the terminal device determines, according to the first parameter carried in the first control information, the first information, and returns the first information to the network device on the n+1th time-frequency resource group of the uplink carrier, where the network device is configured according to the first A message determining the second control information.
- the network device sends the second control information to the terminal device in the n+2 time-frequency resource component of the downlink carrier, where the second control information indicates that the terminal device uses the second parameter or the third parameter in the n+2th
- the first information block is received on the time-frequency resource group and the n+3 time-frequency group.
- the network device can send the second control information to the terminal device on the n+2 time-frequency resource group, and use the second control information to schedule the second information block.
- the second transmission information is beneficial to improving the correct rate of decoding the first information block by the terminal device and improving the reliability of the service transmission.
- Figure 8 shows a schematic diagram of a method of one embodiment of the present application.
- the network device sends first control information to the terminal device in the nth time-frequency resource component of the downlink carrier, where the first control information indicates that the terminal device is in the (n+1)th time-frequency resource group, the nth
- the first information block is received using the first parameter on the +2 time-frequency resource group and the n+3 time-frequency group.
- the terminal device determines, according to the first parameter carried in the first control information, the first information, and returns the first information to the network device on the n+1th time-frequency resource group of the uplink carrier, where the network device is configured according to the first A message determining the second control information.
- the network device sends the second control information to the terminal device in the n+3 time-frequency resource component of the downlink carrier, where the second control information indicates that the terminal device uses the second parameter or the third parameter in the n+3th
- the first information block is received on the time-frequency group.
- the network device can send the second control information to the terminal device on the n+3 time-frequency resource group, and use the second control information to schedule the first information block once.
- the second control information is used to improve the accuracy of decoding the first information block by the terminal device and improve the reliability of the service transmission.
- Figure 9 shows a schematic diagram of one method of transmitting data.
- the network device sends first control information to the terminal device in the nth time-frequency resource component of the downlink carrier, where the first control information indicates the n+2 time-frequency resource group and the n+th of the terminal device.
- the first information block is received using the first parameter on the three time-frequency groups.
- Figure 10 shows a schematic diagram of a method of one embodiment of the present application.
- the network device sends the first control information to the terminal device in the nth time-frequency resource group of the downlink carrier, where the first control information indicates that the terminal device is in the (n+1)th time-frequency resource group, the nth
- the first information block is received using the first parameter on the +2 time-frequency resource group and the n+3 time-frequency group.
- the terminal device determines, according to the first parameter carried in the first control information, the first information, and returns the first information to the network device on the n+1th time-frequency resource group of the uplink carrier, where the network device is configured according to the first A message determining the second control information.
- the network device sends the second control information to the terminal device in the n+2 time-frequency resource component of the downlink carrier, where the second control information indicates that the terminal device uses the second parameter or the third parameter in the n+2th
- the first information block is received on the time-frequency resource group and the n+3 time-frequency group.
- the network device can send the second control information to the terminal device on the n+2 time-frequency resource group, and use the second control information to schedule the first information block twice.
- the second control information is used to improve the accuracy of decoding the first information block by the terminal device and improve the reliability of the service transmission.
- Figure 11 shows a schematic diagram of a method of one embodiment of the present application.
- the network device sends first control information to the terminal device on the nth time-frequency resource component of the downlink carrier, where the first control information indicates that the terminal device is in the (n+1)th time-frequency resource group, the nth
- the first information block is received using the first parameter on the +2 time-frequency resource group and the n+3 time-frequency group.
- the network device sends the second control information to the terminal device in the n+3 time-frequency resource component of the downlink carrier, where the second control information indicates that the terminal device uses the second parameter or the third parameter in the n+3th
- the first information block is received on the time-frequency group.
- the network device can send the second control information to the terminal device on the n+2 time-frequency resource group, and use the second control information to schedule the first information block once.
- the second control information is used to improve the accuracy of decoding the first information block by the terminal device and improve the reliability of the service transmission.
- Figure 12 shows a schematic diagram of one method of transmitting data.
- the network device sends first control information to the terminal device on the nth time-frequency resource component of the downlink carrier, where the first control information indicates that the terminal device uses the first parameter to receive on the nth time-frequency resource group.
- the first information block the network device receives the HARQ feedback information of the first information of the first time-frequency resource group on the n+3 time-frequency resource group, and if the HARQ feedback information is NACK, the network device immediately according to the Sending fourth control information to the terminal device on the downlink resource of the n+th time-frequency resource group of the downlink carrier, that is, the fourth control information is used to instruct the terminal device to receive on the n+6 time-frequency resource group The first information block.
- Figure 13 shows a schematic diagram of a method of one embodiment of the present application.
- the network device sends first control information to the terminal device on the nth time-frequency resource component of the downlink carrier, where the first control information indicates that the terminal device uses the n-th time-frequency resource group of the downlink carrier.
- the first parameter receives the first information block.
- the terminal device determines the first information according to the first parameter carried in the first control information, and returns the first information to the network device on the nth time-frequency resource group of the uplink carrier, where the network device is configured according to the first information. , determining the third control information.
- the network device sends the third control information to the terminal device in the n+1th time-frequency resource group of the downlink carrier, where the third control information indicates that the terminal device receives the first time in the (n+1)th time-frequency group. Information block.
- the network device receives the first information before receiving the HARQ feedback information of the first information in the first time-frequency resource group, and sends the second control according to the first information.
- the information is scheduled to retransmit the first information block, so that the reliability of the service transmission can be improved within the service delay requirement.
- Figure 14 shows a schematic diagram of a method of one embodiment of the present application.
- the network device sends first control information to the terminal device in the nth time-frequency resource group of the downlink carrier, where the first control information indicates that the terminal device uses the nth time-frequency resource group of the downlink carrier.
- a parameter receives the first information block.
- the terminal device determines the first information according to the first parameter carried in the first control information, and returns the first information to the network device on the n+1th time-frequency resource group, and the network device is configured according to the first information.
- the third control information is determined.
- the network device sends the third control information to the terminal device in the n+2 time-frequency resource component of the downlink carrier, where the third control information indicates that the terminal device receives the first time in the n+2 time-frequency group An information block.
- the network device receives the first information before receiving the HARQ feedback information of the first information in the first time-frequency resource group, and sends the second control according to the first information.
- the information is scheduled to retransmit the first information block, so that the reliability of the service transmission can be improved within the service delay requirement.
- Figure 15 shows a schematic diagram of a method of one embodiment of the present application.
- the network device sends first control information to the terminal device in the nth time-frequency resource group of the downlink carrier, where the first control information indicates that the terminal device uses the nth time-frequency resource group of the downlink carrier.
- a parameter receives the first information block.
- the terminal device determines the first information according to the first parameter carried in the first control information, and returns the first information to the network device on the n+1th time-frequency resource group, and the network device is configured according to the first information.
- the third control information is determined.
- the network device sends the third control information to the terminal device in the n+3 time-frequency resource component of the downlink carrier, where the third control information indicates that the terminal device receives the first time in the n+3 time-frequency group An information block.
- the network device receives the first information before receiving the HARQ feedback information of the first information of the first time-frequency resource group, and sends the second control information according to the first information.
- the retransmission of the first information block is scheduled, so that the reliability of the service transmission can be improved within the service delay requirement.
- FIG. 16 is a schematic block diagram of a network device 1600 according to an embodiment of the present application.
- Each module in the network device 1600 is used to perform each action or process performed by the terminal device in the foregoing method.
- the description can be referred to the description above.
- the network device may include: a communication module and a processing module, wherein the processing module is configured to control a signal received and sent by the communication module, and the communication module is configured to send the first control information to the terminal device, where the first control The information is used to indicate the first parameter; the communication module is further configured to send the first information block to the terminal device on the first time-frequency resource group by using the first parameter; Receiving the first information sent by the terminal device, where the first information indicates a channel state corresponding to the first time-frequency resource group, or the first information indicates a second parameter, the second parameter Obtaining, according to the first parameter, the first information indicating a matching degree of the channel state corresponding to the first parameter and the first time-frequency resource group; wherein the first information block is in the following One type: transport block TB, code block CB, code block group CBG.
- the communication module is further configured to: receive hybrid automatic repeat request HARQ feedback information of the first information block sent by the terminal device on the first time-frequency resource group.
- the communication module is further configured to send second control information to the terminal device, where the second control information indicates the second parameter or the third parameter; using the second parameter or the third parameter in the Transmitting, by the second time-frequency resource group, the first information block to the terminal device.
- the third parameter is obtained based on the first information.
- the communication module is further configured to: after receiving the first information, send third control information to the terminal device, where the third control information indicates that the first time is sent on the third time-frequency resource group An information block; transmitting the first information block on the third time-frequency resource group.
- the communication module is further configured to: receive a field sent by the terminal device, where the field includes at least one first state for indicating the first information, and the field further includes at least one second state And indicating HARQ feedback information of the first information block sent on the fourth time-frequency resource group.
- the fourth time-frequency resource group is located in the time domain before the first time-frequency resource group, and the HARQ feedback information of the first information block sent on the fourth time-frequency resource group is ACK .
- the first information includes a channel quality indicator CQI or a signal to interference and noise ratio SINR of a part or all channels of the corresponding first time frequency resource group; or the first parameter includes a first MCS index, and the second The parameter includes a second MCS index, the first information includes a difference between the second MSC index and the first MCS index; or the first information indicates a first information block on the first time-frequency resource group Whether the transmission reliability satisfies the target reliability; or the first information indicates whether the transmission reliability of the first information block on the at least two time-frequency resource groups satisfies the target reliability, wherein the at least two time-frequency resources The group includes a first time-frequency resource group.
- processing module in this embodiment may be implemented by 201 in FIG. 2, and the communication module in this embodiment may be implemented by the receiver 202 and the transmitter 203 in FIG. 2.
- FIG. 17 is a schematic block diagram of a network device 1700 according to an embodiment of the present application.
- Each module in the network device 1700 is used to perform various actions or processes performed by the network device in the foregoing method.
- the description can be referred to the description above.
- the terminal device 1700 includes: a communication module and a processing module, wherein the processing module is configured to control a signal received and sent by the communication module, and the communication module is configured to receive first control information sent by the network device, where the first Controlling information is used to indicate the first parameter; the communication module is further configured to: receive, by using the first parameter, the first information block on a first time-frequency resource group; the communication module is further configured to: The device sends the first information to the network device, where the first information is used to feed back a corresponding channel state of the first time-frequency resource group, or the first information indicates a second parameter, the second The parameter is obtained based on the first parameter; or the first information indicates a matching degree between the channel state of the first time-frequency resource group and the first parameter; wherein the first information block is one of the following Kind: transport block TB, coding block CB, coding block group CBG.
- the communication module is configured to send hybrid automatic repeat request HARQ feedback information of the first information block sent on the first time-frequency resource group to the network device.
- the communication module is further configured to receive second control information sent by the network device, where the second control information indicates the second parameter or the third parameter; using the second parameter or the third transmission Receiving, by the second time-frequency resource group, the first information block.
- the third parameter is obtained based on the first information.
- the communication module is further configured to: after sending the first information to the network device, receive third control information that is sent by the network device, where the third control information indicates that the third time-frequency resource is Sending the first information block on the group; and receiving the first information block on the third time-frequency resource group.
- the communication module is further configured to send a field to the network device, where the field includes at least one first state for indicating the first information, and the field further includes at least one The second state is used to indicate HARQ feedback information of the first information block sent on the fourth time-frequency resource group.
- the fourth time-frequency resource group is located in the time domain before the first time-frequency resource group, and the HARQ feedback information of the first information block sent on the fourth time-frequency resource group is ACK .
- the first information includes a channel quality indicator CQI or channel state information CSI of a part or all channels corresponding to the first time-frequency resource group; or the first parameter includes a first MCS index, and the second parameter Including a second MCS index, the first information includes a difference between the second MSC index and the first MCS index; or the first information indicates a first information block on the first time-frequency resource group Whether the transmission reliability satisfies the target reliability; or the first information indicates whether the transmission reliability of the first information block on the at least two time-frequency resource groups satisfies the target reliability, wherein the at least two time-frequency resource groups Includes the first time-frequency resource group.
- processing module in this embodiment may be implemented by the processor 301 in FIG. 3, and the communication module in this embodiment may be implemented by the receiver 302 and the transmitter 303 in FIG.
- the processor may be an integrated circuit chip with signal processing capabilities.
- 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 processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA), or the like. Programming logic devices, discrete gates 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.
- the computer program product includes one or more computer instructions.
- the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
- the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL), or wireless (eg, infrared, wireless, microwave, etc.).
- the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
- the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium, or the like.
- a magnetic medium eg, a floppy disk, a hard disk, a magnetic tape
- an optical medium eg, a DVD
- semiconductor medium or the like.
- the disclosed systems, devices, and methods may be implemented in other manners.
- the device embodiments described above are merely illustrative.
- the division of the unit is only a logical function division.
- 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.
- the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
- the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
- each functional unit in each embodiment of the embodiments 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.
- 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.
- 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.
- 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.
- 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
- the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, the technical solution of the embodiments of the present application, or the part contributing to the prior art or the part of the technical solution, may be embodied in the form of a software product stored in a storage medium.
- the instructions include a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the various embodiments of the embodiments of the present application.
- the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .
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Abstract
La présente invention concerne un procédé d'envoi de données, et un appareil associé. Le procédé comprend les étapes suivantes : un dispositif de réseau envoie des premières informations de commande à un dispositif terminal, les premières informations de commande étant utilisées pour indiquer un premier paramètre ; le dispositif de réseau envoie un premier bloc d'informations au dispositif de terminal sur un premier groupe de ressources temps-fréquence à l'aide du premier paramètre ; et le dispositif de réseau reçoit des premières informations renvoyées par le dispositif de terminal, les premières informations indiquant un état de canal correspondant au premier groupe de ressources temps-fréquence ou les premières informations indiquant un second paramètre, le second paramètre étant obtenu sur la base du premier paramètre ; ou, les premières informations indiquant un degré de correspondance entre le premier paramètre et l'état de canal correspondant au premier groupe de ressources temps-fréquence, et le premier bloc d'informations étant l'un des éléments dans la liste suivante : un bloc de transmission (TB), un bloc de code (CB) et un groupe de blocs de code (CBG). En conséquence, un mode de réalisation de l'application prédéfinie fournit un procédé d'envoi de données, qui peut aider à améliorer la fiabilité d'un service tandis que l'exigence du faible retard temporel du service est satisfaite.
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WO2020097881A1 (fr) * | 2018-11-15 | 2020-05-22 | 北京小米移动软件有限公司 | Procédé et dispositif de transmission d'informations de commande et de données |
CN114467344A (zh) * | 2019-10-12 | 2022-05-10 | 华为技术有限公司 | 频域传输资源配置的方法以及装置 |
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CN111148074B (zh) * | 2018-11-02 | 2021-06-22 | 华为技术有限公司 | 传输方法和通信设备 |
CN111147204B (zh) * | 2018-11-02 | 2021-06-22 | 华为技术有限公司 | 通信方法、装置及存储介质 |
CN114157400B (zh) * | 2019-02-15 | 2024-04-16 | 华为技术有限公司 | 一种码本的处理方法及装置 |
CN111586859B (zh) * | 2019-02-16 | 2023-10-24 | 华为技术有限公司 | 资源配置的方法和装置 |
CN111757500B (zh) * | 2019-03-28 | 2024-05-24 | 华为技术有限公司 | 通信方法和装置 |
CN112152761B (zh) * | 2019-06-28 | 2024-06-14 | 华为技术有限公司 | 一种通信方法、装置及存储介质 |
CN112584342B (zh) * | 2019-09-30 | 2022-06-10 | 华为技术有限公司 | 通信方法和通信装置 |
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