WO2018202031A1 - Procédé et dispositif de mesure d'interférence, et procédé et dispositif d'acquisition d'informations d'état de canal - Google Patents

Procédé et dispositif de mesure d'interférence, et procédé et dispositif d'acquisition d'informations d'état de canal Download PDF

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Publication number
WO2018202031A1
WO2018202031A1 PCT/CN2018/085304 CN2018085304W WO2018202031A1 WO 2018202031 A1 WO2018202031 A1 WO 2018202031A1 CN 2018085304 W CN2018085304 W CN 2018085304W WO 2018202031 A1 WO2018202031 A1 WO 2018202031A1
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Prior art keywords
time
frequency resource
terminal device
reference signal
channel state
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PCT/CN2018/085304
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English (en)
Chinese (zh)
Inventor
吕永霞
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华为技术有限公司
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Publication of WO2018202031A1 publication Critical patent/WO2018202031A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • 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
    • 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver

Definitions

  • the present application relates to the field of communications, and more particularly to a method and apparatus for interference measurement and a method and apparatus for obtaining channel state information.
  • 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.
  • the URLLC service data packet is usually small, and the time-frequency resources are also small.
  • the existing channel interference measurement is often periodic, and the period is much longer than the transmission delay requirement of the URLLC service. Therefore, the existing channel interference measurement scheme cannot accurately reflect the channel state corresponding when the service data packet is small.
  • the present application provides a method and apparatus for interference measurement and a method and apparatus for obtaining channel state information, which can provide fine interference measurement possibilities for a channel.
  • the first aspect provides a method for performing interference measurement, including: receiving, by a terminal device, control information sent by a network device, where the control information indicates a first time-frequency resource, and the first time-frequency resource includes a zero-power reference a second time-frequency resource corresponding to the signal and a third time-frequency resource that includes the first information block; the terminal device determines the second time-frequency resource according to the control information; and the terminal device uses the zero-power The second time-frequency resource measurement interference corresponding to the reference signal obtains an interference measurement result.
  • the interference measurement resource of the larger period in the conventional solution cannot meet the requirement of high reliability of the URLLC service, and therefore, the terminal device uses the third time-frequency resource.
  • the second time-frequency resource corresponding to the corresponding zero-power reference signal can obtain more detailed interference measurement results.
  • the interference measurement result helps to improve the accuracy of the terminal device channel estimation, thereby improving the performance of the terminal device demodulation and decoding.
  • the service carried by the first information block is a URLLC service.
  • the method provided by the embodiment of the present invention can perform interference measurement on the time-frequency resource occupied by the URLLC service, and can perform interference measurement more finely, thereby facilitating reporting to the network device the channel state information corresponding to the URLLC service transmission, thereby facilitating the channel state information corresponding to the URLLC service transmission.
  • the method further includes: acquiring, by the terminal device, channel state information corresponding to the first time-frequency resource according to the interference measurement result; The terminal device sends the channel state information to the network device.
  • the first time-frequency resource further includes a fourth time-frequency resource corresponding to the first demodulation reference signal
  • the first demodulation reference signal is used by the terminal device to demodulate the first information block
  • the method further includes: the terminal device receiving, by using the network device, the network device, on the fourth time-frequency resource a first demodulation reference signal; the terminal device obtains a channel measurement result by performing channel measurement on the first demodulation reference signal; the terminal device determines the first according to the interference measurement result and the channel measurement result Channel state information corresponding to a time-frequency resource; and the terminal device transmitting the channel state information to the network device.
  • the network device adjusts the MCS used for retransmission of the first information block according to the channel state information fed back by the terminal device, which is beneficial to improving the reliability of the service transmission and satisfying the service. Low latency requirements.
  • the method further includes: receiving, by the terminal device, the first sent by the network device in the third time-frequency resource Information block.
  • the method further includes: the terminal device receiving the indication information sent by the network device, where the indication information is used to indicate the location The second time-frequency resource included in the first time-frequency resource.
  • the sixth time-frequency resource of the second time-frequency resource and the seventh time of the fourth time-frequency resource The frequency resource is located on the same time unit; the transmission power of the signal on the at least one resource particle of the seventh time-frequency resource is greater than the transmission power of the signal on the at least one resource particle of the third time-frequency resource.
  • the signal on the seventh time-frequency resource may have a higher transmission power, it is advantageous to improve the accuracy of the terminal device using the first demodulation reference signal for channel measurement, and to improve the use of the first demodulation by the terminal device.
  • the reference signal performs channel estimation accuracy, thereby improving the correct rate of the demodulation decoding performed by the terminal device by using the channel estimation result.
  • the second aspect provides a method for obtaining channel state information, including: the network device sends control information to the terminal device, where the control information is used to indicate a first time-frequency resource, and the first time-frequency resource includes zero power. a second time-frequency resource corresponding to the reference signal and a third time-frequency resource that includes the first information block; the network device receiving, by the terminal device, channel state information corresponding to the first time-frequency resource, where the channel state information is The terminal device is obtained according to the interference measurement result, and the interference measurement result is obtained by the terminal device by measuring interference of the second time-frequency resource corresponding to the zero-power reference signal.
  • the first time-frequency resource includes a fourth time-frequency resource corresponding to the first demodulation reference signal, and the first demodulation reference signal Decoding the first information block by the terminal device, the method further comprising: the first demodulation reference sent by the network device to the terminal device on the fourth time-frequency resource a signal, wherein the first demodulation reference signal is used by the terminal device to measure a channel and obtain a channel measurement result, where the channel state information is determined by the terminal device according to the interference measurement result and the channel measurement result; The network device receives the channel state information sent by the terminal device.
  • the method further includes: the network device sending, by the network device, the The first information block.
  • the method further includes: the network device sending the indication information to the terminal device, where the indication information is used to indicate a second time-frequency resource included in the first time-frequency resource.
  • the sixth time-frequency resource of the second time-frequency resource and the seventh time of the fourth time-frequency resource The frequency resource is located on the same time unit; the transmission power of the signal on the at least one resource particle of the seventh time-frequency resource is greater than the transmission power of the signal on the at least one resource particle of the third time-frequency resource.
  • a third aspect provides a method for performing interference measurement, including: receiving, by a terminal device, indication information sent by a network device, where the indication information is used to indicate a second time-frequency resource included in the first time-frequency resource; Control information sent by the device, where the control information indicates a first time-frequency resource, where the first time-frequency resource includes a second time-frequency resource corresponding to the zero-power reference signal and a third time that includes the first information block a frequency resource; the terminal device determines, according to the control information, the second time-frequency resource corresponding to a zero-power reference signal included in the first time-frequency resource; and the terminal device measures the zero-power reference signal by using Interference results in interference measurements.
  • the fourth aspect provides a method for obtaining channel state information, including: the network device sends the indication information to the terminal device, where the indication information is used to indicate the second time-frequency resource included in the first time-frequency resource;
  • the terminal device sends control information, where the control information indicates a first time-frequency resource, where the first time-frequency resource includes a second time-frequency resource corresponding to the zero-power reference signal and a third time that includes the first information block. a frequency resource;
  • the terminal device determines, according to the control information, the second time-frequency resource corresponding to a zero-power reference signal included in the first time-frequency resource; and the terminal device measures the zero-power reference signal by using Interference results in interference measurements.
  • a fifth aspect a method for providing interference measurement, comprising: receiving, by a terminal device, control information sent by a network device, where the control information indicates that the terminal device receives a first information block at an eighth time-frequency resource; The device determines, according to the control information, the ninth time-frequency resource corresponding to the zero-power reference signal in a time unit corresponding to the eighth time-frequency resource; the terminal device uses the zero-power reference signal to measure the location The interference on the ninth time-frequency resource is obtained and the interference measurement result is obtained.
  • the method further includes: when the terminal device acquires the time domain range in which the eighth time-frequency resource is located according to the interference measurement result Channel state information corresponding to the frequency resource; the terminal device sends the channel state information to the network device.
  • the terminal device can traverse the sub-bands of the multiple frequency domains in the time domain of the eighth time-frequency resource, obtain the channel state information corresponding to each sub-band, and feed back the channel state information corresponding to each sub-band to the network device, It is advantageous for the network device to schedule the transmission of the next information block.
  • the method further includes: receiving, by the terminal device, a measurement reference sent by the network device in a tenth time-frequency resource Signal, the eighth time-frequency resource includes the tenth time-frequency resource; the terminal device uses the measurement reference signal to measure a channel and obtains a channel measurement result; the terminal device according to the interference measurement result and the channel The measurement result determines channel state information corresponding to the time-frequency resource in the time domain unit where the eighth time-frequency resource is located.
  • the method further includes: receiving, by the terminal device, the first sent by the network device in the fifth time-frequency resource Information block.
  • a sixth aspect a method for obtaining channel state information, comprising: a network device transmitting control information to a terminal device, wherein the control information indicates that the terminal device receives a first information block at an eighth time-frequency resource;
  • the control information is used by the terminal device to determine, according to the control information, the ninth time-frequency resource corresponding to the zero-power reference signal in a time unit corresponding to the eighth time-frequency resource; the zero-power reference signal
  • the terminal device is configured to measure interference on the ninth time-frequency resource and obtain an interference measurement result.
  • the method further includes: when the network device receives the time domain range in which the eighth time-frequency resource sent by the terminal device is located Channel state information corresponding to the frequency resource, the channel state information being obtained by the terminal device according to the interference measurement result.
  • the method further includes: the network device sending, by using the network device, the measurement reference signal in the tenth time-frequency resource,
  • the eighth time-frequency resource includes the tenth time-frequency resource; the measurement reference signal is used by the terminal device to measure a channel and obtain a channel measurement result; and the time-frequency unit in the time-frequency unit where the eighth time-frequency resource is located
  • the channel state information corresponding to the resource is determined by the terminal device according to the interference measurement result and the channel measurement result.
  • the method further includes: the network device sending the first to the terminal device in the fifth time-frequency resource Information block.
  • a seventh aspect provides a network device, a method for executing the foregoing network device, and specifically, the network device may include a module for performing corresponding steps of the foregoing network device.
  • the network device may include a module for performing corresponding steps of the foregoing network device.
  • a processing module for example, a transmitting module, a receiving module, and the like.
  • the eighth 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 the 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 executes the method of the terminal device described above.
  • a computer readable storage medium having instructions stored thereon that, when executed on a computer, cause the computer to perform the methods described in the above aspects.
  • a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method described in the above aspects.
  • FIG. 1 is a schematic diagram of a wireless communication system applied to an embodiment of the present invention.
  • 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.
  • Figure 4 illustrates an interaction diagram of a method of one embodiment of the present application.
  • Figure 5 shows a schematic diagram of one embodiment of the present application.
  • Figure 6 shows a schematic diagram of one embodiment of the present application.
  • Figure 7 shows a schematic diagram of one embodiment of the present application.
  • Figure 8 shows a schematic diagram of another embodiment of the present application.
  • Figure 9 shows a schematic diagram of another embodiment of the present application.
  • Figure 10 shows a schematic diagram of another embodiment of the present application.
  • Figure 11 shows a schematic diagram of another embodiment of the present application.
  • Figure 12 shows a schematic diagram of one embodiment of the present application.
  • Figure 13 shows a schematic diagram of one embodiment of the present application.
  • Figure 14 shows a schematic diagram of one embodiment of the present application.
  • Figure 15 shows a schematic diagram of one embodiment of the present application.
  • Figure 16 shows a schematic diagram of another embodiment of the present application.
  • FIG. 17 shows a schematic block diagram of a terminal device 1700 according to an embodiment of the present invention.
  • FIG. 18 shows a schematic block diagram of a network device 1800 in accordance with an embodiment of the present invention.
  • 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 invention 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 invention.
  • 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 or a future Network devices and the like in an evolved PLMN network.
  • eNB evolved Node B
  • eNodeB evolved Node B
  • 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 invention 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 invention can be executed by
  • the method for transmitting a signal according to the embodiment of the present invention may be used for communication.
  • the execution body of the method for wireless communication according to the embodiment of the present invention 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.
  • 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.
  • mini-slot can be applied in scenarios with large bandwidth scheduling in high-frequency systems, ie scheduling strategies tend to be smaller in time granularity.
  • an embodiment of the present invention provides a data transmission method and a data receiving method, and a corresponding network device and terminal device.
  • 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.).
  • a network device 102 may include one antenna or multiple antennas, such as antennas 104, 106, 108, 110, 112, and 114.
  • 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 (e.g., 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 executing the data sending method provided by the embodiment of the present invention.
  • 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 7, 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 invention.
  • 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 301. component. Receiver 302 and transmitter 303 can be separate circuits or the same circuit.
  • the burst data packet of the URLLC service has a certain randomness.
  • the network device cannot accurately predict when the URLLC packet needs to be transmitted.
  • the URLLC service has very high requirements for delay and transmission reliability.
  • the normal channel information is reported in a period of about 5 ms or 10 ms, which cannot meet the high reliability requirement of the URLLC.
  • the URLLC service is scheduled to report a non-periodic channel state information and then scheduled, it is difficult to meet the requirement of ultra-low latency.
  • the URLLC service if the URLLC service is scheduled to report a non-periodic channel state information and then scheduled, it will preempt the time that can be used to transmit data, and increase the difficulty of meeting the target reliability within the 1 ms transmission delay. Further, due to the bursty nature of the URLLC service, significant power consumption of the terminal device is wasted only by reducing the period. Therefore, the existing channel information reporting mechanism cannot meet the low latency and high reliability transmission requirements of the URLLC service.
  • the method provided by the embodiment of the present invention can perform interference measurement on the time-frequency resource occupied by the URLLC service, and can perform interference measurement more finely, thereby facilitating reporting to the network device the channel state information corresponding to the URLLC service transmission, thereby facilitating the channel state information corresponding to the URLLC service transmission.
  • the time-frequency resource includes one or more frequency domain units in the frequency domain, and the frequency domain unit may include one or more resource blocks, and may further include one or more resource block groups.
  • the time-frequency resource includes one or more time units in the time domain, and the time unit may include one or more time domain symbols, may also include one or more slots, and may also include one or more mini-slots. (mini-slot), or, include one or more subframes.
  • the frequency domain unit includes a plurality of frequency domain units
  • the multiple frequency domain units may be continuous or discontinuous, which is not limited in this application.
  • the time unit includes a plurality of time units
  • the plurality of time units may be continuous or discontinuous, which is not limited in the 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
  • 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.
  • Figure 4 illustrates an interaction diagram of a method of one embodiment of the present application. As shown in FIG. 4, the method includes the following steps. It should be noted that the broken line in FIG. 4 indicates that the corresponding step is an optional step. 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. It should also be understood that, in the embodiment of the present application, “first”, “second” and “third” are only used to distinguish different objects, for example, different modulation and coding schemes, different time-frequency resources, and different The data and the like should not constitute any limitation on this application.
  • Step 401 The terminal device receives control information sent by the network device, where the control information indicates a first time-frequency resource, where the first time-frequency resource includes a second time-frequency resource corresponding to the zero-power reference signal, and includes a bearer.
  • the third time-frequency resource of a block of information is a first time-frequency resource, where the first time-frequency resource includes a second time-frequency resource corresponding to the zero-power reference signal, and includes a bearer.
  • control information in step 401 may be physical layer control information.
  • the control information may be carried in the first downlink control channel, where the control channel may be a physical downlink control channel (PDCCH) or other downlink channel for carrying physical layer control information, and the present application does not. limited.
  • PDCCH physical downlink control channel
  • control information is further used to indicate that the terminal device performs channel measurement on the channel corresponding to the first time-frequency resource, and reports the channel measurement result to the network device.
  • control information may further indicate, to the terminal device, a Modulation and Coding Scheme (MCS), a transmission mode, and the like used by the current transmission of the first information block.
  • the transmission mode may include the number of layers used to transmit the first information block, the precoding matrix used to transmit the first information block, the lobes used to transmit the first information block, and the like.
  • the control information may indicate the MCS, the transmission mode, and the like in an explicit manner, for example, including corresponding fields in the control information to indicate corresponding information.
  • the control information may also indicate the transmission parameters in an implicit manner.
  • the format of the control information is not limited in this application.
  • the control information indicates to the terminal device an index of the MCS candidate scheme used by the network device to schedule the terminal device to transmit, which is hereinafter referred to as the MCS index used for scheduling.
  • the first time-frequency resource in the step 401 includes a third time-frequency resource that carries the first information block, and the first time-frequency resource further includes a second time-frequency resource corresponding to the zero-power reference signal.
  • the first time-frequency resource may be a reference resource for interference measurement, or may include a reference resource for interference measurement, or may be part of a reference resource of the interference measurement, the size of the reference resource of the interference measurement and the time-frequency domain.
  • the location may be indicated by the network device to the terminal device or may be predefined by the communication standard specification.
  • the second time-frequency resource corresponding to the zero-power reference signal in the step 401 is that the network device does not carry any signal on the second time-frequency resource when transmitting the signal to the terminal device, for example, the zero-power reference signal may be specifically Zero Power Channel State Information-Reference Signal (ZP-CSI-RS) or Channel-State Information-Interference Measurement.
  • ZP-CSI-RS Zero Power Channel State Information-Reference Signal
  • the second time-frequency resource corresponding to the zero-power reference signal means that no signal is sent on the second time-frequency resource, and the terminal device can measure, by the second time-frequency resource, the network device to send the same. The energy of the signal other than the signal on the second time-frequency resource, and thus the interference energy.
  • the terminal device measures interference using the received signal on the second time-frequency resource.
  • the terminal device may determine, as the interference signal, the signal received on the second time-frequency resource, and use the interference signal energy as Interference energy.
  • the terminal device may divide the signal received on the second time-frequency resource. A signal other than the two signals is determined as an interference signal, and the energy of the interference signal is used as interference energy. It should be understood that the above interference signal may include a noise signal.
  • the sum of the second time-frequency resource and the third time-frequency resource is a true subset of the first time-frequency resource, or the sum of the second time-frequency resource and the third time-frequency resource is the first time-frequency resource.
  • control information indicates the first time-frequency resource.
  • control information may indicate the location of the first time-frequency resource in an explicit manner, or may indicate the location of the first time-frequency resource in an implicit manner.
  • control information indicates a frequency domain location of the first time-frequency resource of the terminal device
  • the terminal device can determine the frequency domain location of the first time-frequency resource according to the control information, and the terminal device can further perform the predefined rule and the control information. Determine the time domain location of the first time-frequency resource.
  • the predefined rule may be that the time domain location of the first time-frequency resource is a time domain unit where the control information is located; and, for example, the control information directly indicates a time domain location of the first time-frequency resource of the terminal device.
  • the frequency domain location therefore, the terminal device determines the location of the first time-frequency resource according to the control information.
  • control information indicates the third time-frequency resource in the first time-frequency resource.
  • control information may be used to indicate that the terminal device receives the first information block on the first time-frequency resource, where the first time-frequency resource includes a third time-frequency resource for carrying the first information block, and the terminal device may
  • the other related information and/or the communication protocol specification pre-defined rules determine the third time-frequency resource in the first time-frequency resource, wherein the other related information may be location information of the reference signal carried in the first time-frequency resource, and the like.
  • FIG. 5 is a schematic diagram of an embodiment of the present application.
  • the first time-frequency resource includes a third time-frequency resource and a second time-frequency resource, and the first time-frequency resource and the third time-frequency resource are included.
  • the third time-frequency resource is used to transmit the first information block, and the second time-frequency resource is the time-frequency resource corresponding to the zero-power reference signal;
  • FIG. 6 is a schematic diagram of another embodiment of the present application, as shown in FIG.
  • the first time-frequency resource includes a second time-frequency resource and a third time-frequency resource.
  • the manner of determining the other time-frequency resource is similar to the foregoing second time-frequency resource, which is not limited in this application.
  • the other time-frequency resources may be time-frequency resources for transmitting a control channel.
  • the terminal device determines the third time-frequency resource in the first time-frequency resource according to the rule defined by the other related information and/or the communication protocol specification, the other related information may further include the first time-frequency resource. Location information of the control channel carried in the medium, and the like.
  • the first time-frequency resource may refer to a reference resource for performing interference measurement, where the control information indicates that the terminal device performs interference measurement on the reference resource by using a second time-frequency resource measurement, and the reference resource and the third The time-frequency resource has a corresponding relationship.
  • the reference resource includes a three-time frequency resource.
  • control information may indicate the location of the reference resource in an explicit manner, or may indicate the location of the reference resource in an implicit manner.
  • control information indicates that the terminal device refers to the frequency domain location of the resource, and the terminal device can determine the frequency domain location of the reference resource according to the control information, and the terminal device can further determine the time domain of the reference resource according to the predefined rule and the control information. position.
  • the predefined rule may be that the time domain location of the reference resource is a time domain unit where the control information is located; for example, the control information directly indicates the time domain location and the frequency domain location of the reference device reference resource, and therefore, The terminal device determines the location of the reference resource according to the control information.
  • FIG. 7 is a schematic diagram of an embodiment of the present application. As shown in FIG. 7, the first time-frequency resource includes a second time-frequency resource and a third time-frequency resource, and the first time-frequency resource occupies a frequency range greater than The frequency domain of the three-time frequency resources.
  • Step 404 The terminal device determines, according to the control information, the second time-frequency resource corresponding to the zero-power reference signal included in the first time-frequency resource.
  • the second time-frequency resource and the first time-frequency resource have a corresponding relationship
  • the time-frequency resource occupied by the zero-power reference signal has a certain correspondence with the time-frequency resource used for transmitting the first information block
  • the time-frequency resource occupied by the zero-power reference signal has a corresponding relationship with the reference resource for performing interference measurement and the time-frequency resource for transmitting the first information block.
  • the time-frequency resource for transmitting the first information block and the time-frequency resource corresponding to the zero-power reference signal for measuring interference have a corresponding relationship.
  • the channel state information corresponding to the first time-frequency resource refers to channel state information based on the second time-frequency resource measurement, where the channel state information measured based on the second time-frequency resource includes a channel measured only according to the second time-frequency resource.
  • the status information includes or includes channel state information measured according to the second time-frequency resource and other time-frequency resources in the first time-frequency resource.
  • control information indicates the second time-frequency resource in the first time-frequency resource.
  • the control information is used to indicate whether the second time-frequency resource is included in the first time-frequency resource, and the specific location of the second time-frequency resource in the first time-frequency resource may be agreed by the communication standard specification.
  • the terminal device After receiving the control information, the terminal device determines the location of the second time-frequency resource according to the communication standard specification; or the network device indicates the location of the second time-frequency resource to the terminal device by using the high-layer signaling, where the control information is used to indicate the first Whether the second time-frequency resource is included in the time-frequency resource, and the terminal device determines the location of the second time-frequency resource according to the indication of the high-level signaling after receiving the control information; or the network device indicates the second time to the terminal device by using the high-layer signaling
  • the control information is further used to indicate another part of the location information of the second time-frequency resource included in the first time-frequency resource, and the terminal device determines the location of the second time-frequency resource according to the high-level signaling and
  • the network device indicates that the second time-frequency resource is included in the first time-frequency resource by using high-layer signaling, such as radio resource control (RRC) signaling or media access control (MAC) signaling.
  • high-layer signaling such as radio resource control (RRC) signaling or media access control (MAC) signaling.
  • RRC radio resource control
  • MAC media access control
  • the high-level signaling carries indication information, where the indication information indicates that when the transmission of one information block is scheduled by the control information, the first time-frequency resource corresponding to the third time-frequency resource carrying the information block includes the second Time-frequency resources.
  • the format of the control information is X (Format X).
  • the network device enables or activates the terminal device to report the channel state information through the high layer signaling.
  • the network device may explicitly use the control information to indicate, to the terminal device, the second time-frequency resource included in the first time-frequency resource, where the control information includes a field, where the field is at least used. Instructing the terminal device to include the second time-frequency resource in the first time-frequency resource.
  • the network device may implicitly use the control information to indicate to the terminal device that the second time-frequency resource is included in the first time-frequency resource, and the control information includes a field, where the field is at least used to indicate that the terminal device needs to report the first time.
  • the channel state information corresponding to the frequency resource, and the second time-frequency resource used to obtain the channel state information is included in the first time-frequency resource.
  • the network device when the network device sends the first information block, it simultaneously sends a zero power reference signal on the second time-frequency resource.
  • transmitting the zero-power reference signal on the second time-frequency resource refers to vacating the second time-frequency resource, or the network device does not use the second time-frequency resource to carry any transmission signal, or the network device is transmitting.
  • the signal power corresponding to the second time-frequency resource is set to zero.
  • control information is further used to instruct the terminal device to perform interference measurement according to the second time-frequency resource.
  • the terminal device uses the second time-frequency resource corresponding to the zero-power reference signal to measure the interference and obtain the interference measurement result.
  • the interference measurement resource of the larger period in the conventional solution cannot meet the requirement of high reliability of the URLLC service, and therefore, the terminal device uses the third time-frequency resource.
  • the second time-frequency resource corresponding to the corresponding zero-power reference signal can obtain more detailed interference measurement results.
  • the interference measurement result helps to improve the accuracy of the terminal device channel estimation, thereby improving the performance of the terminal device demodulation and decoding.
  • Step 405 The terminal device acquires channel state information corresponding to the first time-frequency resource according to the interference measurement result.
  • the terminal device may determine the channel state information corresponding to the first time-frequency resource according to the interference measurement result, and determine the channel state information corresponding to the first time-frequency resource according to the interference measurement result and the channel measurement result.
  • the foregoing channel state information may be the energy of the interference signal, the channel quality indication, the network device scheduling data transmission using the MCS index, the CQI index, the CQI index difference, and the network device scheduling data transmission using the MCS index difference. At least one of a size or bandwidth of a frequency domain resource, a precoding matrix indication, a rank indication, or a transmission repetition number.
  • the channel state information can be the energy of the interfering signal.
  • the terminal device may determine an absolute value (for example, a power value) of the interference energy according to the interference measurement result, and determine an absolute value of the interference energy as channel state information corresponding to the first time-frequency resource; the terminal device may also determine the interference energy according to the interference measurement result. And determining the received signal energy according to the channel measurement result, and using the received signal energy as a reference, the relative value of the interference energy relative to the received signal energy (for example, a dB value) is used as the channel state information.
  • an absolute value for example, a power value
  • the relative value of the interference energy relative to the received signal energy for example, a dB value
  • the channel state information may be a Channel Quality Indicator (CQI).
  • the terminal device may determine, according to the interference measurement result and the channel measurement result, a Modulation and Coding Scheme (MCS) that satisfies (or can reach) a target block error rate (BLER) of the first information block, and The index of the target MCS with the largest index is selected in the MCS that satisfies the condition, or the index of the target MCS with the highest code rate is selected from the MCS that satisfies the condition, or the index of the target MCS with the highest efficiency is selected from the MCS that satisfies the condition, The index of the target MCS is determined as the CQI corresponding to the first time-frequency resource.
  • MCS Modulation and Coding Scheme
  • BLER target block error rate
  • the above one modulation coding scheme is a scheme including a modulation scheme and an encoding scheme.
  • the foregoing coding scheme may be a modulation code pre-defined by a communication protocol specification and a coding rate, and the foregoing The modulation coding scheme corresponds to an efficiency value equal to the order of its corresponding modulation mode multiplied by its corresponding coding rate.
  • the above target error rate may be indicated by the network device to the terminal device, for example by higher layer signaling, or predefined by a communication standard specification.
  • the index of the MCS may be an index of the network device scheduling data transmission using the MCS, or an index of the MCS candidate scheme (hereinafter referred to as the MCS used for CQI reporting) included in the terminal device reporting the channel state information, that is, the CQI index.
  • the channel state information may be a difference of a CQI index, which may be simply referred to as a Delta CQI.
  • the terminal device determines, according to the CQI index determined by the current channel state, a difference between the CQI index determined by the terminal device according to the channel state of the previous data transmission, and the channel state information corresponding to the first time-frequency resource. .
  • the previous channel state information report may be reported in the previous period that is closest to the current channel state information reporting time, or the previous aperiodic report in which the time is closest.
  • the aperiodic report may be triggered by the network device, or may be reported by the terminal device.
  • the channel state information may be a difference of an MCS index, which may be simply referred to as a Delta MCS.
  • the terminal device may determine, according to the interference measurement result and the channel measurement result, the MCS that satisfies the target block error rate of the first information block, and select the target MCS index with the largest MCS index from the MCS that satisfies the condition, and then the maximum target MCS index is The difference of the MCS index indicated by the control information is determined as channel state information corresponding to the first time-frequency resource.
  • the channel state information may be the size or bandwidth of a frequency domain resource.
  • the terminal device may determine, according to the interference measurement result and the channel measurement result, the bandwidth of the time-frequency resource that is required by the MCS that meets the target error block rate of the first information block and that is indicated by the control information, and uses the bandwidth information of the bandwidth as the first
  • the channel state information corresponding to the time-frequency resource where the bandwidth is the size of the frequency domain range occupied by the time-frequency resource (for example, the number of resource blocks or the number of resource block groups).
  • the terminal device determines the bandwidth of the time-frequency resource, it is assumed that the time domain size occupied by the time-frequency resource is the same as the time domain size occupied by the third time-frequency resource, or the time occupied by the time-frequency resource
  • the domain size is pre-agreed by the communication standard specification.
  • the channel state information may also be a Precoding Matrix Indicator (PMI), or a Rank Indicator (RI), or a transmission repetition number that can satisfy the target BLER.
  • PMI Precoding Matrix Indicator
  • RI Rank Indicator
  • Step 406 The terminal device sends the channel state information to a network device.
  • the terminal device may be in a predefined time domain unit or a time domain unit specified by the network device (for example, the nth time domain) Transmitting, by the unit, the measured channel state information to the network device, where the nk time domain unit is the nkth downlink time domain unit when the network device and the terminal device work in the FDD system,
  • the nth time domain unit is the nth uplink time domain unit.
  • the nk time domain unit can be used to carry a downlink signal
  • the nth The time domain unit can be used to carry the uplink signal
  • n is an integer
  • k is a natural number
  • the network device adjusts the MCS used for retransmission of the first information block according to the channel state information fed back by the terminal device, which is beneficial to improving the reliability of the service transmission and satisfying the service. Low latency requirements.
  • the terminal device receives the first demodulation reference signal sent by the network device.
  • the first time-frequency resource includes a fourth time-frequency resource corresponding to the first demodulation reference signal, where the first demodulation reference signal is used by the terminal device to demodulate the first information block.
  • the method further includes: the terminal device receiving the first demodulation reference signal sent by the network device in the fourth time-frequency resource; the terminal device uses the first demodulation reference signal to measure a channel and And obtaining, by the terminal device, the channel state information corresponding to the first time-frequency resource according to the interference measurement result and the channel measurement result.
  • the first demodulation reference information may be a Demodulation Reference Signal (DMRS) for demodulating and decoding the first information block.
  • DMRS Demodulation Reference Signal
  • the terminal device performs channel measurement according to the first demodulation reference signal, obtains a channel measurement result, and obtains channel state information corresponding to the first time-frequency resource according to the interference measurement result and the channel measurement result.
  • the terminal device can not only demodulate and decode the first information block according to the first demodulation reference signal, but also perform channel measurement according to the first demodulation reference signal.
  • the indication information carried by the high-layer signaling is used to indicate that the terminal device performs channel measurement on the channel corresponding to the first time-frequency resource and reports the measurement result to the network device.
  • the network device enables or activates the terminal device to report the channel state information through the high layer signaling.
  • the terminal device receives the first information block sent by the network device on the third time-frequency resource.
  • the manner of how the terminal device determines the third time-frequency resource can refer to the foregoing description. For the sake of brevity, no further details are provided herein.
  • the indication information carried by the high-layer signaling may be used to indicate that the terminal device measures the channel corresponding to each transmission of the first information block and reports the channel state information; or, the terminal device pairs A channel corresponding to one transmission of an information block measures and reports channel state information; or, the terminal device measures a channel corresponding to several transmissions of the first information block and reports channel state information.
  • the sixth time-frequency resource in the second time-frequency resource and the seventh time-frequency resource in the fourth time-frequency resource are located on the same time unit;
  • the transmit power of the signal on the at least one resource particle in the time-frequency resource is greater than the transmit power of the signal on the at least one resource particle in the third time-frequency resource.
  • the resource particle may refer to a time-frequency resource unit, and the duration of the resource particle in the time domain is equal to a time domain symbol, and the size of the resource particle in the frequency domain is equal to one sub-carrier. Further, the signal carried by the resource particle is included in a time domain symbol in the time domain and modulated on one subcarrier in the frequency domain. This application is not limited.
  • the transmission power of the signal on the at least one resource particle in the time-frequency resource occupied by the first demodulation reference signal is greater than the transmission power of the signal on the at least one resource particle in the time-frequency resource occupied by the corresponding signal of the first information block.
  • the network device may allocate the power originally allocated to the second time-frequency resource corresponding to the zero-power reference signal to the first demodulation reference signal, that is, the network device may save the zero-power reference signal.
  • the lower energy is used to increase the transmission energy of the first mediation reference signal.
  • the power originally allocated to the second time-frequency resource corresponding to the zero-power reference signal refers to the power originally allocated to the second time-frequency resource for transmitting the signal carried on the second time-frequency resource.
  • the signal on the seventh time-frequency resource may have a higher transmission power, it is advantageous to improve the accuracy of the terminal device using the first demodulation reference signal for channel measurement, and to improve the use of the first demodulation by the terminal device.
  • the reference signal performs channel estimation accuracy, thereby improving the correct rate of the demodulation decoding performed by the terminal device by using the channel estimation result.
  • the number of resource particles included in the fourth time-frequency resource is greater than or equal to the number of resource particles included in the second time-frequency resource. That is, the number of resource particles corresponding to the first demodulation reference signal in the first time-frequency resource is greater than the number of resource particles corresponding to the zero-power reference signal.
  • the manner of the embodiments of the present application helps provide the accuracy of channel measurement and/or channel estimation by the terminal device using the first demodulation reference signal.
  • the method further includes: receiving, by the terminal device, the first measurement reference signal sent by the network device.
  • the first time-frequency resource includes an eighth time-frequency resource corresponding to the first measurement reference signal, where the first measurement reference signal is used by the terminal device to measure a channel
  • the method further includes: the terminal device is Receiving, by the eighth time-frequency resource, the first measurement reference signal sent by the network device; the terminal device uses the first measurement reference signal to measure a channel and obtain a channel measurement result; The interference measurement result and the channel measurement result determine channel state information corresponding to the first time-frequency resource.
  • the first measurement reference information may be a Channel State Information Reference Signal (CSIRS).
  • CSIRS Channel State Information Reference Signal
  • the ninth time-frequency resource in the second time-frequency resource and the tenth time-frequency resource in the eighth time-frequency resource are located on the same time unit;
  • the transmit power of the signal on the at least one resource particle in the time-frequency resource is greater than the transmit power of the signal on the at least one resource particle in the ninth time-frequency resource.
  • the transmission power of the signal on the at least one resource particle in the time-frequency resource occupied by the first measurement reference signal is greater than the transmission power of the signal on the at least one resource particle in the time-frequency resource occupied by the corresponding signal of the first information block.
  • the network device may allocate the power originally allocated to the second time-frequency resource corresponding to the zero-power reference signal to the first measurement reference signal, that is, the network device may save the zero-power reference signal.
  • the energy is used to increase the transmission energy of the first measurement reference signal.
  • the power originally allocated to the second time-frequency resource corresponding to the zero-power reference signal refers to the power originally allocated to the second time-frequency resource for transmitting the signal carried on the second time-frequency resource.
  • the signal on the tenth time-frequency resource may have a higher transmission power, it is advantageous to improve the accuracy of the terminal device using the first measurement reference signal for channel measurement.
  • the measurement reference signal is a reference signal for channel measurement.
  • the width of the measurement reference signal distributed in the frequency domain is generally greater than the width of the demodulation reference signal in the frequency domain, or the frequency domain bandwidth occupied by the measurement reference signal is greater than the frequency domain bandwidth occupied by the demodulation reference signal. Therefore, the terminal device performs measurement of the channel using the measurement reference signal, which helps to improve the frequency domain range of the channel measurement. Accordingly, a wider range of channel measurement results help the network device select a channel state for subsequent data transmission of the terminal device. Good frequency domain resources, thereby improving the spectral efficiency and transmission reliability of subsequent transmissions.
  • Figure 8 shows a schematic diagram of one embodiment of the present application.
  • the resource corresponding to the zero-power reference signal is the second time-frequency resource
  • the time-frequency resource occupied by the first information block (that is, the data transmission time-frequency resource in FIG. 8) is the third time-frequency resource, first.
  • the time-frequency resource carries control information, a demodulation reference signal, a zero-power reference signal, and a first information block.
  • the time domain resources where the control information, the first demodulation reference signal, and the zero power reference signal are located are the same.
  • the demodulation reference signal and the zero power reference signal are located in a control channel region within the first time-frequency resource.
  • Figure 9 shows a schematic diagram of another embodiment of the present application.
  • the resource corresponding to the zero-power reference signal is the second time-frequency resource
  • the time-frequency resource occupied by the first information block (that is, the data transmission time-frequency resource in FIG. 9) is the third time-frequency resource, first.
  • the time-frequency resource carries control information, a demodulation reference signal, a zero-power reference signal, and a first information block.
  • the time domain resources where the control information and the demodulation reference signal are located are the same, and the time domain resources where the zero power reference signal is located are different from the time domain resources where the control information and the demodulation reference signal are located.
  • Figure 10 shows a schematic diagram of another embodiment of the present application.
  • the resource corresponding to the zero-power reference signal is the second time-frequency resource
  • the time-frequency resource occupied by the first information block (that is, the data transmission time-frequency resource in FIG. 10) is the third time-frequency resource, first.
  • the time-frequency resource carries a demodulation reference signal, a zero-power reference signal, and a first information block.
  • the time domain resources of the first demodulation reference signal and the zero power reference signal are the same, and the demodulation reference signal and the zero power reference signal are located in a data channel region within the first time-frequency resource.
  • Figure 11 shows a schematic diagram of another embodiment of the present application.
  • the resource corresponding to the zero-power reference signal is the second time-frequency resource
  • the time-frequency resource occupied by the first information block (that is, the data transmission time-frequency resource in FIG. 11) is the third time-frequency resource, first.
  • the time-frequency resource carries a demodulation reference signal, a zero-power reference signal, and a first information block.
  • the time domain resources occupied by the demodulation reference signal and the zero power reference signal are different, the zero power pilots in the first time-frequency resource are located in the same time domain unit, and the demodulation reference signal and the zero power reference signal are located in the first The data channel area within a time-frequency resource.
  • Figure 12 shows a schematic diagram of another embodiment of the present application.
  • the resource corresponding to the zero-power reference signal is the second time-frequency resource
  • the time-frequency resource occupied by the first information block (that is, the data transmission time-frequency resource in FIG. 12) is the third time-frequency resource, first.
  • the time-frequency resource carries a demodulation reference signal, a zero-power reference signal, and a first information block.
  • the time domain resources occupied by the first demodulation reference signal and the zero power reference signal are different, and the zero power pilot in the first time-frequency resource is located in at least two time domain units, and the demodulation reference signal and the zero power reference are used.
  • the signal is located in a data channel region within the first time-frequency resource.
  • the method includes: receiving, by the terminal device, control information sent by the network device, where the control information indicates that the terminal device receives the first information block in the eighth time-frequency resource; the terminal device Determining, according to the control information, the ninth time-frequency resource corresponding to the zero-power reference signal in a time unit corresponding to the eighth time-frequency resource; the terminal device uses the zero-power reference signal to measure the Interference on the ninth time-frequency resource and the interference measurement result.
  • the method further includes: the terminal device acquiring, according to the interference measurement result, channel state information corresponding to a time-frequency resource in a time domain range in which the eighth time-frequency resource is located; The terminal device sends the channel state information to the network device.
  • the terminal device can traverse the sub-bands of the multiple frequency domains in the time domain range of the eighth time-frequency resource, obtain the channel state information corresponding to each sub-band, and feed back the channel state information corresponding to each sub-band to the network device, It is advantageous for the network device to schedule the transmission of the next information block.
  • the method further includes: receiving, by the terminal device, a measurement reference sent by the network device in a tenth time-frequency resource Signal, the eighth time-frequency resource includes the tenth time-frequency resource; the terminal device uses the measurement reference signal to measure a channel and obtains a channel measurement result; the terminal device according to the interference measurement result and the channel The measurement result determines channel state information corresponding to the time-frequency resource in the time domain unit where the eighth time-frequency resource is located.
  • the method further includes: receiving, by the terminal device, the first sent by the network device in the fifth time-frequency resource Information block.
  • Figure 13 shows a schematic diagram of one embodiment of the present application.
  • the resource corresponding to the zero-power reference signal is the ninth time-frequency resource
  • the time-frequency resource occupied by the first information block is the eighth time-frequency resource, that is, the data transmission resource in FIG.
  • the frequency resource carries a demodulation reference signal, a zero power reference signal, a channel state information reference signal, and a first information block.
  • the channel state information reference signal, the demodulation reference signal, and the zero power reference signal are located in the same time domain resource.
  • Figure 14 shows a schematic diagram of one embodiment of the present application.
  • the resource corresponding to the zero-power reference signal is the ninth time-frequency resource
  • the time-frequency resource occupied by the first information block is the eighth time-frequency resource, that is, the data transmission resource in FIG.
  • the frequency resource carries a demodulation reference signal, a zero power reference signal, a channel state information reference signal, and a first information block.
  • the channel state information reference signal and the zero power reference signal are located in the same time domain resource, and the demodulation reference signals occupy different time-frequency resources.
  • Figure 15 shows a schematic diagram of one embodiment of the present application.
  • the resource corresponding to the zero-power reference signal is the ninth time-frequency resource
  • the time-frequency resource occupied by the first information block is the eighth time-frequency resource, that is, the data transmission resource in FIG.
  • the frequency resource carries a demodulation reference signal, a zero power reference signal, a channel state information reference signal, and a first information block.
  • Figure 16 shows a schematic diagram of one embodiment of the present application.
  • the resource corresponding to the zero-power reference signal is the ninth time-frequency resource
  • the time-frequency resource occupied by the first information block is the eighth time-frequency resource, that is, the data transmission resource in FIG.
  • the frequency resource carries control information, a demodulation reference signal, a zero power reference signal, a channel state information reference signal, and a first information block.
  • FIG. 17 is a schematic block diagram of a terminal device 1700 according to an embodiment of the present invention.
  • Each module in the terminal device 1700 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 terminal device may include: a communication module and a processing module, where the communication module is configured to receive control information sent by the network device, where the control information indicates a first time-frequency resource, and the first time-frequency resource includes zero a second time-frequency resource corresponding to the power reference signal and a third time-frequency resource that includes the first information block;
  • the processing module is configured to determine the second time-frequency resource according to the control information
  • the processing module is further configured to obtain an interference measurement result by performing interference measurement on the second time-frequency resource corresponding to the zero-power reference signal.
  • the processing module is configured to acquire, according to the interference measurement result, channel state information corresponding to the first time-frequency resource, where the communication module is configured to send, to the network device, Channel state information.
  • the first time-frequency resource includes a fourth time-frequency resource corresponding to the first demodulation reference signal, where the first demodulation reference signal is used by the terminal device.
  • the communication module is further configured to send the first demodulation reference signal to the terminal device on the fourth time-frequency resource;
  • the processing module is further configured to The first demodulation reference signal is used for channel measurement to obtain a channel measurement result;
  • the processing module is further configured to determine, according to the interference measurement result and the channel measurement result, channel state information corresponding to the first time-frequency resource;
  • the communication module is further configured to send the channel state information to the network device.
  • the communications module is configured to receive the first information block sent by the network device in the third time-frequency resource.
  • the method further includes: the terminal device receiving the indication information sent by the network device, where the indication information is used to indicate a second included in the first time-frequency resource Time-frequency resources.
  • the sixth time-frequency resource in the second time-frequency resource and the seventh time-frequency resource in the fourth time-frequency resource are located on the same time unit;
  • the transmit power of the signal on the at least one resource particle in the time-frequency resource is greater than the transmit power of the signal on the at least one resource particle in the third time-frequency resource.
  • processing module in this embodiment may be implemented by 201 in FIG. 3, and the communication module in this embodiment may be implemented by the receiver 302 and the transmitter 303 in FIG.
  • FIG. 18 is a schematic block diagram of a network device 1800 according to an embodiment of the present invention.
  • Each module in the network device 1800 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 terminal device may include: a communication module and a processing module, where the communication module is used to send control information to the terminal device, where the control information is used to indicate a first time-frequency resource, the first time-frequency resource The second time-frequency resource corresponding to the zero-power reference signal and the third time-frequency resource that includes the first information block are included; the communication module is further configured to receive, by the terminal device, channel state information corresponding to the first time-frequency resource, The channel state information is obtained by the terminal device according to the interference measurement result, and the interference measurement result is obtained by the terminal device by performing interference measurement on the second time-frequency resource corresponding to the zero-power reference signal.
  • control information is further used by the terminal device to determine the second time-frequency resource corresponding to the zero-power reference signal included in the first time-frequency resource.
  • the first time-frequency resource includes a fourth time-frequency resource corresponding to the first demodulation reference signal, where the first demodulation reference signal is used by the terminal device. Decoding the first information block,
  • the communication module is configured to send the first demodulation reference signal to the terminal device on the fourth time-frequency resource, where the first demodulation reference signal is used by the terminal device to measure a channel and Obtaining a channel measurement result, where the channel state information corresponding to the first time-frequency resource is determined by the terminal device according to the interference measurement result and the channel measurement result; the communication module is further configured to receive the Channel status information.
  • the communications module is further configured to send the first information block to the terminal device in the third time-frequency resource.
  • the communications module is further configured to send, to the terminal device, indication information, where the indication information is used to indicate a second time-frequency resource included in the first time-frequency resource. .
  • the sixth time-frequency resource in the second time-frequency resource and the seventh time-frequency resource in the fourth time-frequency resource are located on the same time unit;
  • the transmit power of the signal on the at least one resource particle in the time-frequency resource is greater than the transmit power of the signal on the at least one resource particle in the third time-frequency resource.
  • 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.
  • 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 couplings or direct couplings or communication connections that are explicitly or discussed may be indirect coupling or communication connections through some interfaces, devices or units, and may be electrical, mechanical or otherwise.
  • the units described as separate components may or may not be physically separated, and the components that are explicit 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 present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present application which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

Abstract

Un mode de réalisation de la présente invention concerne un procédé de mesure d'interférence comprenant les étapes suivantes : un appareil terminal reçoit des informations de commande transmises par un appareil de réseau, les informations de commande indiquant une première ressource temps-fréquence et la première ressource temps-fréquence comprenant une seconde ressource temps-fréquence correspondant à un signal de référence de puissance nulle et une troisième ressource temps-fréquence portant un premier bloc d'informations ; l'appareil terminal détermine la seconde ressource temps-fréquence conformément aux informations de commande ; et l'appareil terminal mesure, au moyen de la seconde ressource temps-fréquence correspondant au signal de référence de puissance nulle, une interférence pour obtenir un résultat de mesure d'interférence. Le mode de réalisation de la présente invention permet une mesure d'interférence précise d'un canal.
PCT/CN2018/085304 2017-05-05 2018-05-02 Procédé et dispositif de mesure d'interférence, et procédé et dispositif d'acquisition d'informations d'état de canal WO2018202031A1 (fr)

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CN113330802B (zh) * 2019-04-22 2023-11-07 Oppo广东移动通信有限公司 用于无线通信的方法和设备
CN111600690B (zh) * 2019-04-30 2021-07-06 维沃移动通信有限公司 参考信号测量、参考信号资源配置方法和设备
CN112929100B (zh) * 2019-12-05 2022-12-06 维沃移动通信有限公司 参考信号的发送方法、发射机及计算机可读存储介质
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