WO2022194263A1 - Procédé de communication et appareil de communication - Google Patents

Procédé de communication et appareil de communication Download PDF

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Publication number
WO2022194263A1
WO2022194263A1 PCT/CN2022/081591 CN2022081591W WO2022194263A1 WO 2022194263 A1 WO2022194263 A1 WO 2022194263A1 CN 2022081591 W CN2022081591 W CN 2022081591W WO 2022194263 A1 WO2022194263 A1 WO 2022194263A1
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WIPO (PCT)
Prior art keywords
signal
time domain
symbol
resource
subcarriers
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PCT/CN2022/081591
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English (en)
Chinese (zh)
Inventor
余健
邵家枫
赵文琪
李怡然
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华为技术有限公司
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Publication of WO2022194263A1 publication Critical patent/WO2022194263A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • 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
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present application relates to the field of communications, and in particular, to a method and apparatus for integrating communication perception.
  • Radar perception also known as radar detection
  • radar detection is widely used in air and ground traffic monitoring, weather detection, security monitoring, electromagnetic imaging, etc.
  • the cost of radar equipment is high, especially in the case of continuous networking.
  • wireless communication has abundant spectrum resources, large-scale deployment and wide coverage
  • radar sensing and wireless communication can be integrated to meet the needs of both wireless communication and detection.
  • the signal in the wireless communication system is mainly used for communication. For the system integrating communication and perception, how to design the perception signal has become an urgent problem to be solved.
  • the communication method and device provided by the embodiments of the present application can improve the work efficiency and performance of the communication-aware integrated device.
  • a communication method is provided, and the method can be performed by a network device or a chip configured in the network device.
  • the network device may be an access network device, or may be a network element that implements corresponding functions of the access network device.
  • the method includes: mapping a first signal to a first resource; sending the first signal on the first resource; wherein the first signal includes a first physical channel and a first reference signal, the first The resource includes a first time domain symbol in the time domain, the first physical channel and the first reference signal are mapped to N subcarriers on the first time domain symbol, and any two adjacent N subcarriers and the interval between any two adjacent subcarriers in the N subcarriers is the first interval, the first interval is one or two subcarriers, and the N is a positive value greater than 2 Integer.
  • the first signal is mapped at equal intervals in the frequency domain, which can make repeated waveforms appear in the time domain, which is equivalent to lengthening the cyclic prefix, which can reduce inter-symbol interference, which is beneficial to improve the receiving quality of the echo signal, thereby improving the perception accuracy.
  • the first signal is mapped in the frequency domain at equal intervals of 1 or 2 subcarriers, that is, the frequency domain density is 4 or 6, while the current CSI-RS frequency domain density is at most 3, and higher frequency domain densities can be
  • the sensing accuracy is improved; both the physical channel and the RS included in the first signal can be used as sensing signals at the same time; therefore, the network device can use the first signal to perform target sensing with higher precision.
  • the first signal includes a first physical channel for carrying communication data, that is, the first physical channel can be used for sensing and communication at the same time, which is beneficial to reduce the influence of increased system overhead caused by sending the sensing signal and improve communication throughput.
  • the method further includes: receiving an echo signal of the first signal, wherein the echo signal is used to perceive a target. Further, the network device may obtain the sensing result of the sensed target according to the first signal and the echo signal of the first signal. In this way, the network device can further utilize the sensing result to assist communication and improve the quality of communication.
  • the method before sending the first signal, further includes: sending configuration information of the first signal; wherein the configuration information includes one or more of the following: time domain resource information of the first signal, The frequency domain resource information of the first signal, the code domain resource information of the first signal, or the port number information of the first signal.
  • the method further includes: sending a second signal on a second resource, where the second resource and the first resource are time division and/or frequency division.
  • the second signal is used for communication, and the second signal includes a second physical channel and a second reference signal RS.
  • a communication method is provided, and the method can be executed by a terminal device or a chip configured in the terminal device.
  • the method includes: determining a first resource; receiving a first signal on the first resource; wherein the first signal includes a first physical channel and a first reference signal, and the first resource includes a first resource in the time domain a time domain symbol, the first physical channel and the first reference signal are mapped to N subcarriers on the first time domain symbol, any two adjacent subcarriers in the N subcarriers are equally spaced, and The interval between any two adjacent subcarriers in the N subcarriers is a first interval, the first interval is one or two subcarriers, and the N is a positive integer greater than 2.
  • the method before receiving the first signal, the method further includes: receiving configuration information of the first signal; wherein the configuration information includes one or more of the following: time domain resource information of the first signal, The frequency domain resource information of the first signal, the code domain resource information of the first signal, or the port number information of the first signal.
  • the terminal device can determine the mapping resource of the first signal according to the configuration information of the first signal.
  • the method further includes: processing the first signal and sending feedback information corresponding to the first signal.
  • the method further includes: receiving a second signal on a second resource, where the second resource and the first resource are time division and/or frequency division. Further, the terminal device processes the second signal and sends feedback information corresponding to the second signal.
  • the second signal is used for communication, and the second signal includes a second physical channel and a second RS. The terminal device can jointly process the first signal and the second signal to further improve communication performance.
  • the first resource further includes a second time domain symbol in the time domain.
  • the first time domain symbol and the second time domain symbol are respectively the nth symbol and the n+kth symbol in the same slot, where n and k are positive integers. For example, k is 7.
  • the first physical channel and the first RS are further mapped to M subcarriers on the second time domain symbol; or the first physical channel is further mapped to the second time domain symbol M subcarriers on a domain symbol, the second time domain symbol does not carry the first RS.
  • the interval between any two adjacent subcarriers in the M subcarriers is equal, and the interval between any two adjacent subcarriers in the M subcarriers is a second interval, and the second interval is equal to the the first interval. If the second time-domain symbol does not carry the first RS, the reference signal overhead can be reduced, and the communication transmission capacity can be increased.
  • the first resource includes a first time domain symbol, a second time domain symbol, a third time domain symbol and a fourth time domain symbol in the time domain, wherein the four time domain symbols are the same slot
  • k is 7.
  • the first resource is a mapping resource corresponding to a first antenna port
  • the first signal is mapped to mapping resources corresponding to the first antenna port and other O antenna ports, where O is a positive integer
  • the mapping resources corresponding to the first resource and the other O antenna ports are frequency- or time-divided.
  • the network device transmits sensing signals in different scanning directions on different antenna ports, which speeds up the sensing and scanning speed while taking into account the detection performance.
  • REs between any two adjacent subcarriers have zero power
  • REs between any two adjacent subcarriers are mapping resources of the first signals corresponding to the other O antenna ports.
  • the first signal is mapped at equal intervals in the frequency domain, which can make repeated waveforms appear in the time domain, which is equivalent to lengthening the cyclic prefix, which can reduce inter-symbol interference, which is beneficial to improve the receiving quality of the echo signal, thereby improving the perception accuracy.
  • zero-power REs can also be used to measure interference from other network equipment.
  • the first RS is used to demodulate the first physical channel. Because the first signal includes the first RS for demodulating the first physical channel, it supports scenarios where the perceived beam direction and the communication beam direction are inconsistent, for example, the beam directions of the first signal and the second signal are inconsistent or precoding Are not the same.
  • the first RS is used for channel measurement or interference measurement.
  • the first physical channel may be demodulated by RSs on other communication resources.
  • the first signal may not include the RS for demodulating the first physical channel, thereby saving RS overhead.
  • the feedback information corresponding to the first signal is CSI.
  • the CSI fed back by the terminal equipment can be further used for beam management and resource scheduling. Since the first signal is frequently sent in the time domain as a sensing signal, the accuracy of beam measurement can be improved.
  • the first RS and the second RS are used for demodulation of the second physical channel.
  • the terminal equipment performs channel estimation in conjunction with multiple RSs to improve the channel estimation accuracy, thereby improving the demodulation performance of the second physical channel, which is especially suitable for scenarios where the perceived beam direction and the communication beam direction are the same.
  • a communication apparatus including each module or unit for performing the method in any possible implementation manner of the above-mentioned first aspect.
  • a communication apparatus including each module or unit for executing the method in any possible implementation manner of the second aspect.
  • a communication apparatus including a processor.
  • the processor is coupled to the memory and is operable to execute instructions in the memory to cause the communication device to perform the method in any of the possible implementations of the first aspect above.
  • the communication device further includes a memory.
  • the communication device further includes a transceiver and/or an antenna.
  • the communication apparatus may be a network device or a chip configured in the network device.
  • a communication apparatus including a processor.
  • the processor is coupled to the memory and is operable to execute instructions in the memory to cause the communication device to perform the method in any of the possible implementations of the second aspect above.
  • the communication device further includes a memory.
  • the communication device further includes a transceiver and/or an antenna.
  • the communication apparatus may be a terminal device or a chip configured in the terminal device.
  • a network device which can implement the method in any possible implementation manner of the foregoing first aspect.
  • the network device may be a chip (such as a baseband chip, or a communication chip, etc.) or a base station device, and the above method may be implemented by software, hardware, or by executing corresponding software by hardware.
  • the network device includes a processor and a memory.
  • the processor is configured to support the network device to execute the method in any one of the possible implementation manners of the first aspect;
  • the memory is configured to store instructions and/or data.
  • the network device further includes a radio frequency unit and an antenna.
  • the network device includes a baseband unit and a transceiver unit.
  • the baseband unit is configured to perform the actions performed by the network device in any of the possible implementation methods of the first aspect;
  • the transceiver unit is configured to perform the actions of the network device sending or receiving from the outside.
  • the network device includes a processor and a transceiver.
  • the processor is configured to support the network device to execute the method in any one of the possible implementation manners of the first aspect.
  • the transceiver may be an input-output unit, such as an input-output circuit or an input-output interface.
  • the network device may include a unit module that performs corresponding actions in any of the possible implementation methods of the first aspect above.
  • a terminal device which can implement the method in any possible implementation manner of the foregoing second aspect.
  • the terminal device may be a chip (such as a communication chip, etc.) or user equipment, and the above method may be implemented by software, hardware, or by executing corresponding software by hardware.
  • the terminal device includes a processor and a memory; the processor is configured to support the terminal device to perform corresponding functions in any of the possible implementation methods of the second aspect; the Memory is used to store instructions and/or data.
  • the terminal further includes a radio frequency circuit and an antenna.
  • the terminal device includes a processing device and a transceiver unit.
  • the processing device includes a processor and a memory, and is configured to execute the actions implemented by the terminal device in any of the possible implementation methods of the second aspect;
  • the transceiver unit includes a radio frequency circuit and an antenna, and is configured to execute the terminal device to perform the operations. Actions sent or received externally.
  • the terminal device includes a processor and a transceiver.
  • the processor is configured to support the terminal device to execute the method in any of the possible implementation manners of the second aspect.
  • the transceiver may be an input-output unit, such as an input-output circuit or an input-output interface.
  • the terminal device may include a unit module that performs corresponding actions in any of the possible implementation methods of the second aspect above.
  • a computer-readable storage medium which stores a computer program or instruction, and when the computer program or instruction is executed, implements the method in any possible implementation manner of the above-mentioned first aspect.
  • a tenth aspect provides a computer-readable storage medium storing a computer program or instruction, when the computer program or instruction is executed, the method in any of the possible implementation manners of the second aspect above is implemented.
  • a processor comprising: an input circuit, an output circuit and a processing circuit.
  • the processing circuit is configured to receive signals through the input circuit and transmit signals through the output circuit, so that the processor performs any of the above aspects or the method in any of the possible implementations of this aspect.
  • the above-mentioned processor is a chip
  • the input circuit is an input pin
  • the output circuit is an output pin
  • the processing circuit is a transistor, a gate circuit, a flip-flop and/or various logic circuits.
  • a twelfth aspect provides a computer program product, the computer program product comprising: a computer program (also referred to as code, or instructions), which, when the computer program is executed, causes a computer to execute any one of the above-mentioned first aspects method in one possible implementation.
  • a computer program also referred to as code, or instructions
  • a thirteenth aspect provides a computer program product, the computer program product comprising: a computer program (also referred to as code, or instructions), which, when the computer program is executed, causes a computer to execute any one of the above-mentioned second aspects method in one possible implementation.
  • a computer program also referred to as code, or instructions
  • FIG. 1 is a schematic diagram of the communication perception integrated system of the application
  • Fig. 2A is a kind of resource mapping diagram that this application provides
  • FIG. 2B is another resource mapping diagram provided by this application.
  • FIG. 2C provides another resource mapping diagram for this application
  • FIG. 2D is another resource mapping diagram provided by this application.
  • Fig. 2E is another resource mapping diagram provided by this application.
  • FIG. 2F provides another resource mapping diagram for this application
  • FIG. 2G is another resource mapping diagram provided by this application.
  • FIG. 5 is a schematic structural diagram of a communication device provided by the present application.
  • FIG. 6 is a schematic structural diagram of a terminal device provided by the present application.
  • FIG. 7 is a schematic structural diagram of a network device provided by the present application.
  • HCS harmonized communication and sensing
  • Communication in this system includes but is not limited to: long term evolution (LTE), fifth generation (5G), new radio (NR), wireless-fidelity (WiFi), Wireless communications related to the 3rd generation partnership project (3GPP), or other wireless communications that may appear in the future.
  • LTE long term evolution
  • 5G fifth generation
  • NR new radio
  • WiFi wireless-fidelity
  • 3GPP 3rd generation partnership project
  • FIG. 1 shows a schematic diagram of the system structure of an integrated communication perception system.
  • the system 100 includes at least one network device, such as the network device 110 shown in FIG. 1; the system 100 may also include at least one terminal device, such as the terminal device 120 shown in FIG. 1; the system 100 may also include at least one A perceived target, such as the perceived target 130 shown in FIG. 1 .
  • the network device 110 has a communication function, that is, the network device 110 and the terminal device 120 can communicate through a wireless link, thereby exchanging information. It can be understood that network equipment and terminal equipment may also be referred to as communication equipment.
  • the network device 110 has a sensing function. For example, after the network device 110 sends the sensing signal, it will receive the echo signal of the sensed target 130 .
  • the network device 110 can obtain the sensing result of the sensed target according to the first signal and the echo signal of the first signal, for example, the distance, angle, position, moving speed, or overall size of the sensed target. In this way, the network device 110 can further utilize the sensing result to assist communication and improve the quality of communication.
  • the sensing function and the communication function may be implemented by the same network device, or may be implemented by a plurality of network devices in cooperation with each other, which is not limited in this embodiment of the present invention.
  • the integrated communication and perception system is a system that integrates the communication function and the perception function.
  • Communication perception fusion includes the following advantages: the communication and radar perception functions share hardware, which can save hardware costs; the perception function can be directly deployed on the existing site, so the deployment is convenient; it is convenient for collaborative networking, and the perception results are used to assist communication and improve communication. the quality of.
  • a network device is a network-side device with wireless transceiver functions.
  • the network device may be a base station (base station), an evolved NodeB (eNodeB), a next generation NodeB (gNB) in a 5G mobile communication system, a transmission reception point (TRP) , 3GPP subsequent evolution base station, access node in WiFi system, wireless relay node, wireless backhaul node, etc.
  • a network device may contain one or more co-located or non-co-located transmit and receive points.
  • the network device may include a centralized unit (central unit, CU), a distributed unit (distributed unit, DU), or a CU and a DU.
  • the wireless access network device can be implemented through multiple network function entities.
  • These network function entities may be network elements in hardware devices, software functions running on dedicated hardware, or virtualized functions instantiated on a platform (eg, a cloud platform).
  • the network device may be a road side unit (RSU).
  • the multiple network devices in the communication system may be the same type of base station, or may be different types of base stations.
  • the base station can communicate with the terminal equipment, and can also communicate with the terminal equipment through the relay station.
  • the network device in this application may also be a device with a sensing function, and the device can send a sensing signal and receive and process an echo signal of a sensed target.
  • the communication device used to implement the function of the network device may be a network device, a network device having some functions of a base station, or a device capable of supporting the network device to realize the function, such as a chip system, the device Can be installed in network equipment.
  • a terminal device is a user-side device with wireless transceiver function, which can be a fixed device, a mobile device, a handheld device (such as a mobile phone), a wearable device, a vehicle-mounted device, or a wireless device (such as a communication module) built into the above-mentioned device. , modem, or system-on-a-chip, etc.).
  • Terminal devices are used to connect people, things, machines, etc., and can be widely used in various scenarios, such as: cellular communication, device-to-device (D2D) communication, V2X communication, machine-to-machine/machine class Communication (M2M/MTC) communication, Internet of things (IoT), virtual reality (VR), augmented reality (AR), industrial control ( industrial control), unmanned driving (self driving), telemedicine (remote medical), smart grid (smart grid), smart furniture, smart office, smart wear, smart transportation, smart city, drone, robot etc. scene.
  • D2D device-to-device
  • V2X machine-to-machine/machine class Communication
  • M2M/MTC machine-to-machine/machine class Communication
  • IoT Internet of things
  • VR virtual reality
  • AR augmented reality
  • industrial control industrial control
  • unmanned driving self driving
  • telemedicine remote medical
  • smart grid smart furniture, smart office, smart wear, smart transportation, smart city, drone, robot etc. scene.
  • the terminal device may be a handheld terminal in cellular communication, a communication device in D2D, an IoT device in MTC, a surveillance camera in smart transportation and smart city, or a communication device on drones, etc.
  • Terminal equipment may sometimes be referred to as user equipment (UE), user terminal, user equipment, subscriber unit, subscriber station, terminal, access terminal, access station, UE station, remote station, mobile device, or wireless communication device, etc. Wait.
  • UE user equipment
  • Perceived targets refer to various tangible objects on the ground that can be perceived, such as mountains, forests, or buildings, and can also include movable objects such as vehicles, drones, pedestrians, and terminal equipment.
  • the sensed target is a target that can be sensed by a network device with a sensing function, and the target can feed back electromagnetic waves to the network device.
  • the perceived target may also be referred to as a detected target, a perceived object, a detected object, or a perceived device, etc., which is not limited in this embodiment of the present invention.
  • the perception signal refers to a signal used for perceiving a target or detecting a target, or in other words, the perception signal refers to a signal used for perceiving environmental information or detecting environmental information.
  • a sensing signal is an electromagnetic wave sent by a network device to sense environmental information.
  • the perception signal may also be referred to as a radar signal, a radar perception signal, a detection signal, a radar detection signal, an environment perception signal, or the like, which is not limited in the embodiment of the present invention.
  • Resource refers to wireless resources, including time domain resources, frequency domain resources, or code domain resources, and the like.
  • Resource element a resource element with the smallest granularity, a resource element is composed of a time-domain symbol (hereinafter referred to as a symbol in this embodiment of the present invention) and a sub-carrier in the frequency domain, and can be composed of an index pair (k, l) Unique identifier, where k is the subcarrier index, and l is the symbol index.
  • Resource block An RB is composed of consists of consecutive subcarriers. in, is a positive integer. In the 5G system, Equal to 12, can be other values when applied to other systems. In this embodiment of the present invention, RBs are only defined from frequency domain resources, and have nothing to do with time domain resources.
  • Time domain symbol (symbol): The time domain symbol may also be called an orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbol. It should be noted that the time domain symbol may also be named in combination with other multiple access modes, which is not limited in the embodiment of the present invention.
  • the time-domain symbol lengths may be different for different subcarrier spacings.
  • a slot consists of N symbols, where N is a positive integer. For example, for a normal cyclic prefix (NCP), N is equal to 14; for a long CP (extended cyclic prefix, ECP), N is equal to 12. When the solutions of the embodiments of the present invention are applied to other systems, N may also be other numerical values. For different subcarrier intervals, the length of a slot may be different, which is not limited in this embodiment of the present invention. For example, when the subcarrier spacing is 15kHz and the CP is NCP, one slot is 1ms (milliseconds) and consists of 14 symbols.
  • Physical channel bears data information.
  • a physical channel can be a physical downlink shared channel (PDSCH), a physical downlink control channel (PDCCH), and a physical broadcast channel (physical downlink control channel).
  • broadcast channel PBCH
  • physical sidelink shared channel PSSCH
  • physical sidelink control channel PSCCH
  • physical sidelink broadcast channel physical sidelink broadcast channel
  • PSBCH physical sidelink feedback channel
  • PUCCH physical uplink shared channel
  • PUSCH physical uplink shared channel
  • PUCCH physical uplink control channel
  • Reference signal reference signal
  • the reference signal can be used for physical channel demodulation, channel measurement, interference measurement, or synchronization tracking.
  • the reference signal may be a demodulation reference signal (DMRS), a channel state information reference signal (CSI-RS), a sounding reference signal (SRS), a phase tracking reference signal (phase -tracking reference signal, PT-RS), primary synchronization signal (PSS) or secondary synchronization signal (SSS).
  • DMRS is used to demodulate the physical channel.
  • the network device or the terminal device performs channel estimation according to the DMRS, and then demodulates the physical channel according to the estimated channel value.
  • the CSI-RS is used to obtain channel state information.
  • the network device sends the CSI-RS to the terminal device, and the terminal device obtains the channel state information CSI according to the measurement of the CSI-RS and feeds back the CSI to the network device.
  • the network device pairs the CSI based on the CSI-RS. Scheduling of end devices.
  • the reference signal may also be other types of reference signals, or reference signals with other functions.
  • antenna port (antenna port): referred to as the port.
  • the transmit antenna recognized by the receiving end device, or the transmit antenna that can be distinguished in space.
  • One antenna port may be configured for each virtual antenna, each virtual antenna may be a weighted combination of multiple physical antennas, and each antenna port may correspond to one reference signal port.
  • the channels experienced by different signals transmitted by the same antenna port are the same, that is, the channel of one RE on the same antenna port can be inferred from the channel of another RE.
  • An antenna port corresponds to a set of time-frequency resource units.
  • Reference signals in 5G NR systems are mainly used for communication.
  • the current position of CSI-RS or other RSs in the frequency domain or time domain is subject to certain constraints, and cannot meet the requirements of radar detection in different scenarios.
  • the existing CSI-RS signals can be flexibly configured in the time domain, their density in the frequency domain is low, resulting in low detection accuracy.
  • the current frequency domain density of CSI-RS is at most 3, that is, there are at most 3 REs in a physical resource block (PRB) to send CSI-RS, and they are sent at equal intervals in the frequency domain.
  • PRB physical resource block
  • the frequency domain density is small, although target detection can also be performed, but the detection accuracy will be limited, for example, the detection distance will be reduced.
  • the frequency domain density is small, the energy of the frequency domain correlation peak will be reduced, which will reduce the signal-to-interference plus noise ratio (SINR), resulting in a decrease in detection accuracy.
  • SINR signal-to-interference plus noise ratio
  • the radar signal needs to be designed according to the requirements of detection accuracy (including detection distance, speed estimation accuracy, etc.).
  • the methods provided by the embodiments of the present application will be described with reference to the accompanying drawings. It can be understood that, in the method embodiments described below, only the network equipment and the terminal equipment are used as examples for description, and the network equipment mentioned in the method embodiments can also be replaced by chips configured in the network equipment. For execution, the terminal device can also be replaced by a chip configured in the terminal device. The terminal device and the network device may specifically be in the various forms mentioned above.
  • the embodiments of the present invention have been described with network equipment and terminal equipment, it should be understood that different functions in the method may be performed by different network equipment. For example, different functions of the base station may be performed by different network equipment.
  • FIG. 2 is a schematic diagram of resource mapping provided by an embodiment of the present application.
  • the first signal and resource mapping thereof provided by the embodiment of the present application will be described below with reference to FIG. 2 .
  • the first resource is the resource to which the first signal is mapped, that is, the resource that bears the first signal.
  • This first signal can be used as a sensing signal.
  • the first resource includes first time domain symbols in the time domain.
  • the first time domain symbol is the nth symbol in a slot, where n is a positive integer, for example, n is 7 or 14.
  • n is a positive integer, for example, n is 7 or 14.
  • the first time-domain symbol is the seventh symbol in a slot.
  • the first resource includes a first time domain symbol and a second time domain symbol in the time domain.
  • the first time domain symbol and the second time domain symbol are respectively the nth symbol and the n+kth symbol in the same slot, where n and k are positive integers.
  • a slot includes 14 time domain symbols, and k is 7, that is, the first time domain symbol and the second time domain symbol are the nth symbol and the n+7th symbol in the same slot, respectively.
  • the first time-domain symbol and the second time-domain symbol are the seventh symbol and the fourteenth symbol in the same slot, respectively.
  • the first time domain symbols and the second time domain symbols are evenly distributed in a slot, which is beneficial to channel estimation performance.
  • the first resource includes a first time domain symbol, a second time domain symbol, a third time domain symbol and a fourth time domain symbol in the time domain, wherein the first time domain symbol, the second time domain symbol, The third time domain symbol and the fourth time domain symbol are the nth symbol, the n+1th symbol, the n+kth symbol and the n+k+1th symbol in the same slot.
  • k is 7, that is, the four time domain symbols are the nth symbol, the n+1th symbol, the n+7th symbol, and the n+8th symbol in the same slot, respectively.
  • the 4 symbols are the 6th, 7th, 13th and 14th symbols in the same slot.
  • the network device receives the echo (specifically, as the present invention
  • the time described in step S405 in the embodiment may be longer, which is conducive to sensing a longer distance.
  • the first resource includes N REs.
  • the N REs are located in N subcarriers on the first time domain symbol.
  • the interval between any two adjacent subcarriers in the N subcarriers is equal, and the interval between any two adjacent subcarriers in the N subcarriers is the first interval, and the first interval is one or two subcarriers , and N is a positive integer greater than 2.
  • adjacent subcarriers do not refer to continuous subcarriers, but two subcarriers with the closest distance in the frequency domain.
  • the REs carrying the first signal are gray and black squares, and it can be seen that the first interval between any two adjacent REs is one subcarrier.
  • the subcarrier k carrying the first signal ⁇ k satisfies Formula 1:
  • ⁇ is a power or amplitude scaling factor
  • r(t) is the modulation symbol and/or sequence to be transmitted by the first signal (including the modulation symbol and the first reference signal sequence carried by the first physical channel)
  • t is the modulation symbol or The index of the sequence.
  • the network device needs to indicate the values of C and k' to the terminal device. When C is equal to 2, it represents that the first interval is 1 subcarrier, and when C is equal to 3, it represents that the first interval is 2 subcarriers.
  • the first resource includes N REs and M REs.
  • the N REs are located on the N subcarriers on the first time domain symbol, as described above.
  • the M REs are located in M subcarriers on the second time domain symbol. Any two adjacent subcarriers in the M subcarriers are equally spaced, and there is a second space between any two adjacent subcarriers in the M subcarriers, the second space is one or two subcarriers, and the first space
  • the second interval is equal to the first interval.
  • M is a positive integer greater than 2.
  • N may be equal to M, and of course N may not be equal to M.
  • the N subcarriers and the M subcarriers may completely overlap, partially overlap, or completely non-overlapping in the frequency domain.
  • the non-overlapping resource mapping method is beneficial to obtain frequency domain diversity gain.
  • the N REs are 6 subcarriers on the 7th symbol
  • the M REs are 6 subcarriers on the 14th symbol
  • the N REs and the M REs are in the frequency domain completely overlapped.
  • the N REs are 6 subcarriers on the 7th symbol
  • the M REs are 6 subcarriers on the 14th symbol
  • the N REs and the M REs do not overlap at all in the frequency domain. .
  • the REs of the first resource are distributed in the frequency domain at the interval of one or two adjacent subcarriers; in other words, the first resource is distributed between any two adjacent subcarriers in the frequency domain.
  • the interval is one or two subcarriers; in other words, the first resources are distributed at equal intervals in the frequency domain, and the equal interval means that the interval between two adjacent subcarriers is one or two subcarriers.
  • the first signal is mapped in the frequency domain with an interval of one adjacent subcarrier. It should be noted that each grid in FIG. 2A to FIG. 2G represents one RE.
  • N REs correspond to 6*a or 4*a subcarriers in the frequency domain, where "*" represents the multiplication of mathematical operations, a represents the number of RBs and is a positive integer, and 6 or 4 represents 6 on each RB Or 4 subcarriers, the interval between any two adjacent subcarriers in the 6 subcarriers is 1 subcarrier, and the interval between any two adjacent subcarriers in the 4 subcarriers is 2 subcarriers.
  • the REs between any two adjacent subcarriers in the above-mentioned first resource are zero-power REs, that is, the network device performs zero-power transmission on REs between any two adjacent subcarriers.
  • Zero-power REs can also be used to measure interference from other network equipment.
  • the RE between any two adjacent subcarriers may be the mapping resources of the first signal corresponding to other antenna ports, for example, the first resource is the mapping resource of the first signal corresponding to the first antenna port, any two The RE in the middle of the adjacent subcarriers is the mapping resource of the first signal corresponding to the second antenna port, as shown in FIG. 2D .
  • the first signal is mapped to N subcarriers at equal intervals, and the REs vacated in the middle may be zero-power REs or mapping resources of the first signals corresponding to other antenna ports.
  • the first signal is mapped at equal intervals in the frequency domain, which can make repeated waveforms appear in the time domain, which is equivalent to lengthening the cyclic prefix, which can reduce inter-symbol interference, which is beneficial to improve the receiving quality of the echo signal, thereby improving the perception accuracy.
  • the first signal is mapped at equal intervals of 1 or 2 subcarriers in the frequency domain, that is, the frequency domain density is 4 or 6, while the current CSI-RS frequency domain density is at most 3, and higher frequency Domain density can improve perception accuracy.
  • the terminal device can directly demodulate the data carried by the first physical channel through the first reference signal, without relying on other symbols The reference signal carried, so that the network device can configure the precoding of the first signal to be different from the precoding on other symbols, and can be used to perceive targets in different spatial directions.
  • the first signal includes a first physical channel and a first RS.
  • the first physical channel carries downlink control information (downlink control information, DCI), unicast data, multicast data or broadcast data.
  • the first physical channel may be a downlink physical channel, such as PDSCH, PDCCH or PBCH.
  • the first physical channel is a PDCCH, and the first PDCCH carries DCI.
  • the first physical channel is a PDSCH, and the PDSCH carries unicast data, broadcast data, or multicast data.
  • the first physical channel is a PBCH, and the PBCH carries a master information block (master information block, MIB).
  • the first physical channel may also be a sidelink physical channel, such as PSSCH, PSBCH or PSCCH.
  • the network device is an in-vehicle device and generates the first sidelink physical channel.
  • the first RS in this embodiment of the present invention may be a newly designed RS, for example, an RS used for perception, and the first RS may also be a currently defined RS.
  • the first RS may be used to demodulate the first physical channel, for example, the first RS may be a DMRS used to demodulate the first downlink physical channel or the first sidelink physical channel.
  • the first RS may be used for channel measurement or interference measurement, for example, the first RS may be a CSI-RS.
  • the first RS is used for phase tracking, for example, the first RS may be a PT-RS.
  • the first RS may be used for time-frequency synchronization or tracking, for example, the first RS may be PSS or SSS. Accordingly, the first RS may be an RS used for at least one of the following purposes: for demodulating the first physical channel, for channel measurement or interference measurement, for phase tracking, or for time-frequency synchronization or tracking.
  • the first signal includes a first physical channel and a first RS for demodulating the first physical channel.
  • the time-frequency domain pattern of the first signal meets the detection accuracy requirement, so the first signal can be used for sensing.
  • the first signal includes the first physical channel, so the first signal is available for communication.
  • this embodiment supports a scenario where the perceived beam direction and the communication beam direction are inconsistent, for example, the beam direction of the first signal and the The beam directions of the two signals (used as communication signals as described in step S409 ) may be inconsistent.
  • this embodiment can also support a scenario in which the perceived beam direction and the communication beam direction are the same. In this case, multiple RSs can be combined to perform channel estimation to improve the channel estimation accuracy and further improve the demodulation performance of the physical channel.
  • the first signal includes a first physical channel and a first RS for channel measurement or interference measurement.
  • the time-frequency domain pattern of the first signal meets the detection accuracy requirement, so the first signal can be used for sensing.
  • the first signal includes the first physical channel, so the first signal is available for communication.
  • This embodiment supports a scenario in which the perceived beam direction and the communication beam direction are the same.
  • the beam direction of the first signal and the beam direction of the second signal (used as a communication signal as described in step S409 in this embodiment of the present application) are the same. .
  • the RS included in the second signal may be used for demodulation of the first physical channel, and the first signal may not include the RS used for demodulation of the first physical channel, thereby saving RS overhead.
  • the first physical channel and the first RS are mapped to N subcarriers on the first time domain symbol.
  • the first physical channel and the first RS are mapped to the above N REs.
  • the first time-domain symbol is the seventh symbol in a slot
  • the first interval is one subcarrier, that is, the first physical channel and the first RS are mapped to 6 subcarriers on the 7th symbol in a slot.
  • the first physical channel is mapped to X subcarriers on the first time domain symbol
  • the first RS is mapped to (N-X) subcarriers on the first time domain symbol
  • X is a positive integer.
  • X is N/2, that is, the first physical channel and the first RS are respectively mapped to N/2 subcarriers on the first time domain symbol, for example, as shown in FIG. 2A .
  • X is less than N/2, that is, the first RS occupies less resources and increases the communication transmission capacity, for example, as shown in FIG. 2F .
  • the first physical channel and the first RS are mapped to N subcarriers on the first time domain symbol and M subcarriers on the second time domain symbol. That is, in addition to the first time-domain symbol, the first physical channel and the first RS are also mapped to M subcarriers on the second time-domain symbol.
  • the content carried on the second time domain symbol and the content carried on the first time domain symbol may be the same or different.
  • the first interval and the second interval are one subcarrier, and the first physical channel and the first RS are mapped to the 7th symbol in the same slot and 6 subcarriers on the 14th symbol.
  • the first physical channel and the first RS are mapped to N subcarriers on the first time domain symbol, the first physical channel is further mapped to M subcarriers on the second time domain symbol, the second time domain symbol
  • the domain symbol does not carry the first RS. That is, in one slot, the first physical channel is mapped to the first time domain symbol and the second time domain symbol, and the first RS is only mapped to the first time domain symbol.
  • the first time-domain symbol is the seventh symbol in a slot, and the seventh symbol includes the first physical signal and the first RS; the second time-domain symbol is the slot.
  • the 14th symbol in , the 14th symbol does not include the first RS, but only includes the first physical signal.
  • the precoding on the 14th symbol may be the same as the precoding on the 7th symbol, so that the 14th symbol may not transmit RS, and the first physical channel carried on the 14th symbol may be based on the 7th symbol.
  • Channel estimation is performed on the reference signal and then the data is demodulated. Since the RS is only sent on one time domain symbol, the overhead of the reference signal can be reduced and the communication transmission capacity can be increased.
  • the first signal is mapped to multiple antenna ports, that is, the first physical channel and the first RS are mapped to multiple antenna ports.
  • the first resource is a mapping resource corresponding to the first antenna port.
  • the mapping resources of the first signals corresponding to different antenna ports are frequency division or time division, and thus the first signals on the multiple antenna ports do not interfere with each other.
  • the RE between any two adjacent subcarriers is the mapping resource of the first signal corresponding to other antenna ports.
  • Step S403 includes: the network device maps the first signal to the first resource corresponding to the first antenna port and the mapping resources corresponding to the other 0 antenna ports, where 0 is a positive integer, the first resource and the other 0 antenna ports
  • the corresponding mapping resources are frequency-division or time-division.
  • the first signal is mapped to the first antenna port and the second antenna port, and the signals on the two antenna ports are frequency-divided.
  • the network device transmits sensing signals in different scanning directions on different antenna ports, which speeds up the sensing and scanning speed while taking into account the detection performance.
  • FIG. 3 is a schematic flowchart of a communication method provided by an embodiment of the present application. The method includes the following steps.
  • a terminal device determines a first resource.
  • the network device maps the first signal to the first resource.
  • the network device sends the first signal on the first resource. Accordingly, the terminal device receives the first signal on the first resource.
  • the terminal device may determine the first resource bearing the first signal according to formula 1.
  • the network device may also be determined according to the configuration information sent by the network device to the terminal device.
  • the network device maps the first physical channel and the first RS to N subcarriers on the first time domain symbol, and any two adjacent subcarriers in the N subcarriers are equally spaced, and all the subcarriers are equally spaced.
  • the interval between any two adjacent subcarriers in the N subcarriers is a first interval, the first interval is one or two subcarriers, and the N is a positive integer greater than 2.
  • the network device sends the first physical channel and the first RS on the N subcarriers of the first time domain symbol, and accordingly, the terminal device receives the first physical channel and the first RS on the N subcarriers of the first time domain symbol. a rs.
  • the first signal is mapped in the frequency domain at equal intervals of 1 or 2 subcarriers, that is, the frequency domain density is 4 or 6 (and the current CSI-RS frequency domain density is at most 3), and in addition , both the physical channel and the RS included in the first signal can be used as sensing signals at the same time. Therefore, the network device can use the first signal to perform target sensing with higher precision.
  • the first signal includes a first physical channel for carrying communication data, that is, the first signal can be used for sensing and communication at the same time, which is beneficial to reduce the influence of increased system overhead caused by sending the sensing signal and improve communication throughput quantity. In conclusion, through this solution, the work efficiency and performance of the sensing and communication integrated device can be improved.
  • FIG. 4 provides an example of a detailed communication method. Each step shown in FIG. 4 will be described below. It should be noted that the steps indicated by dotted lines in FIG. 4 are optional, and will not be described in detail in the following.
  • the network device sends the configuration information of the first signal to the terminal device.
  • the terminal device receives the configuration information of the first signal sent by the network device.
  • the configuration information of the first signal may include one or more of information used to indicate a time domain, a frequency domain, a code domain or a port number that carries the first signal. That is, the configuration information of the first signal may include one or more of the following: time domain resource information of the first signal, frequency domain resource information of the first signal, code domain resource information of the first signal, or Port number information.
  • the configuration information of the first signal includes time domain resource information of the first signal and frequency domain resource information of the first signal, but does not include code domain resource information of the first signal and port number information of the first signal.
  • the configuration information of the first signal includes code domain resource information of the first signal, but does not include time domain resource information of other first signals, frequency domain resource information of the first signal, and port number information of the first signal.
  • the configuration information may be carried by higher layer signaling and/or physical layer signaling.
  • the configuration information includes frequency domain resource information of the first signal and port number information of the first signal, wherein the frequency domain resource information of the first signal is carried by RRC signaling, and the port number information of the first signal is carried by physical layer signaling. order to carry.
  • the higher layer signaling is radio resource control (radio resource control, RRC) signaling.
  • the configuration information of the first signal may be used to indicate the first resource. Therefore, the configuration information of the first signal may also be referred to as configuration information of the first resource.
  • step S401 may be replaced with: the network device sends the configuration information of the first resource to the terminal device.
  • the terminal device receives the configuration information of the first resource sent by the network device.
  • the terminal device determines the first resource.
  • the terminal device may determine the first resource according to the configuration information of the first signal. For example, the terminal device determines the first resource according to the time domain resources and/or code domain resources indicated by the configuration information. Alternatively, the terminal device may determine the first resource bearing the first signal according to a predefined rule (for example, the rule is Formula 1) or a pre-stored rule.
  • a predefined rule for example, the rule is Formula 1
  • a pre-stored rule for example, the rule is Formula 1
  • the first signal is mapped onto multiple antenna ports.
  • the first resource is a mapping resource corresponding to the first antenna port.
  • Step S402 includes: the terminal device determines the first resource corresponding to the first antenna port and the mapping resources corresponding to the other O antenna ports, where O is a positive integer. For specific description and effects, refer to step S403.
  • the network device maps the first signal to the first resource.
  • step S403 includes: the network device maps the first physical channel and the first RS to N subcarriers on the first time domain symbol and M subcarriers on the second time domain symbol.
  • the first physical channel and the first reference signal are mapped to N REs and M REs.
  • step S402 includes: the network device maps the first physical channel and the first RS to N REs and M REs.
  • step S402 includes: the network device maps the first physical channel and the first RS to N subcarriers on the first time domain symbol, and also maps the first physical channel to M subcarriers on the second time domain symbol carrier.
  • the first physical channel and the first RS are mapped to N REs, and the first physical channel is further mapped to M REs.
  • the M REs do not carry the first RS.
  • step S403 includes: the network device maps the first physical channel and the first RS to N REs, and also maps the first physical channel to M REs.
  • mapping the first signal to the first resource by the network device belongs to a step of generating the first signal by the network device, and step S403 may also be replaced by "the network device generates the first signal".
  • the generating of the first signal by the network device includes: the network device generating the first physical channel and the first RS.
  • the generation of the first physical channel by the network device includes: the network device encodes, scrambles, and modulates data information carried by the first physical channel, performs multi-antenna correlation processing (only for multi-antennas), and resource mapping (that is, the network device converts the first physical channel to The channel is mapped to the resource for the first physical channel in the first resource), the OFDM baseband signal generation process, and the like.
  • generating the first RS by the network device includes: first RS sequence generation, resource mapping (ie, the network device maps the first RS to resources used for the first RS in the first resource), OFDM baseband signal generation processing, and the like.
  • the network device sends the first signal to the terminal device.
  • the terminal device receives the first signal sent by the network device.
  • the first signal is used as a sensing signal, so the network device also sends the first signal to the sensed target at the same time.
  • the network device sends the first signal to the terminal device on the first resource.
  • the network device sends the first signal on the mapping resources corresponding to the multiple antenna ports.
  • the terminal device receives the first signal sent by the network device on the first resource.
  • the terminal device receives the first signal sent by the network device on the mapping resources corresponding to the multiple antenna ports.
  • the network device may send the configuration information of the first signal or the first resource to one or more terminal devices, which is not limited in this embodiment of the present invention.
  • the first physical channel carries group/cast data, and the network device sends the first signal to multiple terminal devices.
  • group/broadcast data can be video, dynamic layers or road safety information, etc.
  • the network device receives the echo signal of the first signal.
  • the echo signal is used to perceive the target, and corresponds to the perceived target. That is, the first signal is transmitted, scattered, and reflected by the sensed target to generate an electromagnetic feedback signal, that is, an echo signal.
  • the sensed target may be one or more, which is not limited in this embodiment of the present invention.
  • the network device processes the echo signal of the first signal.
  • the network device obtains the sensing result of the sensed target according to the first signal and the echo signal of the first signal, for example, the distance, angle, position, moving speed, or overall size of the sensed target. In this way, the network device can further utilize the sensing result to assist communication and improve the quality of communication.
  • the network device adopts the mechanism of self-sending and self-receiving, and after sending the first signal, it will receive the echo signal of the first signal and process it. For example, if the base station should send the first signal at time t, and receive the echo signal at time t+k, it can be estimated that the distance of the perceived target is about: ((t+k)-t)*c/2. where c is the speed of light.
  • the terminal device processes the first signal.
  • the terminal device sends feedback information corresponding to the first signal to the network device.
  • the network device receives feedback information corresponding to the first signal sent by the terminal device.
  • the first physical channel is the first PDSCH
  • the first RS is the DMRS used for demodulation of the first PDSCH.
  • S407 includes: the terminal device performs channel estimation according to the first RS, and then demodulates the first PDSCH according to the channel estimation result.
  • S408 includes: the terminal device sends HARQ-ACK (Hybrid Automatic Repeat Request-Acknowledgement, Hybrid Automatic Repeat Request-Acknowledgement) feedback information corresponding to the first signal to the network device. If the first PDSCH demodulation is correct, the terminal device returns ACK (Acknowledgement, correct response) information; if the downlink data demodulation is wrong, the terminal device returns NACK (Non-Acknowledgement, error response) information.
  • HARQ-ACK Hybrid Automatic Repeat Request-Acknowledgement, Hybrid Automatic Repeat Request-Acknowledgement
  • the first RS is an RS used for channel measurement or interference measurement, such as CSI-RS.
  • S407 includes: the terminal device performs channel measurement or interference measurement according to the first RS to obtain channel state information CSI.
  • the CSI includes at least one of the following information: rank indicator (Rank indicator, RI), precoding indicator (Precoding matrix indicator), channel quality indicator (Channel quality indicator, CQI), L1-RSRP (Reference signal receive power, RSRP), Beam index or reference signal resource index, etc.
  • the CSI fed back by the terminal equipment can be further used for beam management and resource scheduling. Since the first signal is frequently sent in the time domain as a sensing signal, the accuracy of beam measurement can be improved.
  • the network device can learn the signal strength of the measured radar beam according to the feedback L1-RSRP, thereby reducing beam measurement overhead. If the first signal (ie, the sensing signal) is not used for beam measurement, the network device needs to configure additional reference signal resources for CSI measurement, resulting in high system overhead.
  • the network device sends a second signal to the terminal device.
  • the terminal device receives the second signal sent by the network device.
  • the second signal is used for communication, that is, the second signal is a communication signal, that is, a signal transmitted in the communication system.
  • the second signal is mapped onto the second resource.
  • the second resource and the first resource respectively include different REs.
  • the second resource and the first resource respectively include different REs.
  • the second resource and the first resource are divided in time and/or frequency, that is, the second resource and the first resource are different time domain resources and/or frequency domain resources.
  • the second resource is part or all of the available resources of the second signal, as shown in FIG. 2A, 2B, 2C or 2D, the second signal and the first signal are located in different time domain resources.
  • the network device sends the second signal to the terminal device on the second resource.
  • the network device sends the second signal on the mapping resources corresponding to the multiple antenna ports.
  • the terminal device receives the second signal sent by the network device on the second resource.
  • the terminal device receives the second signal sent by the network device on the mapping resources corresponding to the multiple antenna ports.
  • the method further includes: the network device maps the second signal to the second resource.
  • the method further includes: the terminal device receives configuration information of the second signal; and the terminal device determines the second resource according to the configuration information of the second signal.
  • the terminal device processes the second signal, or the terminal device jointly processes the first signal and the second signal.
  • the second signal includes a second physical channel and a second RS.
  • Step S410 includes: the terminal equipment performs channel estimation jointly with the first RS and the second RS, and then demodulates the second physical channel according to the channel estimation result. This solution can enhance the channel estimation accuracy and improve the demodulation performance of the second physical channel.
  • the first RS and the second RS can also be used for demodulation of the first physical channel.
  • the 1 or 2 TB blocks carried by the first physical channel and the 1 or 2 TB blocks of the second physical channel are different.
  • the precoding of the first signal and the second signal are the same or the beam directions are the same, they can also be processed jointly.
  • the first physical channel and the second physical channel carry the same one TB block or the same multiple TB blocks.
  • the first signal includes a first PDSCH and a first CSI-RS
  • the second signal includes a second PDSCH and a second RS for demodulating the first PDSCH and the second PDSCH, wherein the first PDSCH and the second PDSCH carry Encoded different parts of the same TB block.
  • step S410 If the network device does not jointly process the first signal and the second signal, the specific process of S410 is similar to that of step S407, and it is only necessary to replace "first" with "second", which will not be repeated again.
  • the terminal device sends feedback information corresponding to the second signal to the network device.
  • the network device receives feedback information corresponding to the second signal sent by the terminal device.
  • step S411 The specific process of S411 is similar to that of step S408, and it is only necessary to replace "first” with "second", which will not be repeated.
  • the second signal may be generated by the network device (described in steps S401 to S411 ) or other network devices, and sent to the terminal device (described in steps S401 to S411 ) and/or other terminals sent by the device, further, the terminal device and/or other terminal devices send feedback information corresponding to the second signal to the network device or other network devices, which is not limited in this embodiment of the present invention.
  • the size of the sequence numbers of the above processes does not imply the sequence of execution, and the execution sequence of each process should be determined by its functions and internal logic.
  • the various numerical numbers or serial numbers involved in the above processes are only for the convenience of description, and should not constitute any limitation on the implementation process of the embodiments of the present application.
  • S402 and S403 may be performed simultaneously, or S402 or S403 may be a preceding step.
  • S406 and S407 may be performed simultaneously, or S406 and S407 may be the preceding steps.
  • the network device may use the first signal to perform target perception with higher precision.
  • the first signal is mapped at equal intervals in the frequency domain, so that repeated waveforms appear in the time domain, which is equivalent to lengthening the cyclic prefix, which can reduce inter-symbol interference, which is beneficial to improve the receiving quality of the echo signal, thereby improving the perception accuracy;
  • first The signal is mapped in the frequency domain with equal spacing of 1 or 2 subcarriers, that is, the frequency domain density is 4 or 6, while the current CSI-RS frequency domain density is at most 3, and higher frequency domain density can improve the perception accuracy.
  • Both the physical channel and the RS included in the first signal can be used as sensing signals at the same time.
  • the first signal includes a first physical channel for carrying communication data, that is, the first signal can be used for sensing and communication at the same time, which is beneficial to reduce the influence of increased system overhead caused by sending the sensing signal and improve communication throughput quantity.
  • the first signal and the second signal are jointly processed to further improve the communication performance.
  • FIG. 5 is a schematic structural diagram of a communication apparatus provided by an embodiment of the present application. It should be noted that the part indicated by the dotted box in FIG. 5 is optional, and will not be described in detail in the following.
  • Communication device 1000 includes one or more processors 1100 .
  • the processor 1100 may also be referred to as a processing unit, and may be used to perform internal processing of the device and implement certain control processing functions.
  • processor 1100 includes instructions 1300 .
  • the processor 1100 may store data.
  • the processor 1100 may be a general-purpose processor or a special-purpose processor or the like. For example, including at least one of the following: baseband processor, central processing unit, application processor, modem processor, graphics processor, image signal processor, digital signal processor, video codec processor, controller, and/or Or neural network processors, etc.
  • the different processors can be stand-alone devices or can be integrated in one or more processors, eg, on one or more application specific integrated circuits.
  • the communication device 1000 includes one or more memories 1200 for storing the instructions 1400 .
  • the memory 1200 may also store data.
  • the processor and the memory can be provided separately or integrated together.
  • the communication apparatus 1000 may further include a transceiver 1500 and/or an antenna 1600 .
  • the transceiver 1500 may be used to transmit information to or receive information from other devices.
  • the transceiver 1500 may be referred to as a transceiver unit, a transceiver, a transceiver circuit, a transceiver, an input and output interface, etc., and is used to implement the transceiver function of the communication device 1000 through the antenna 1600.
  • the communication device 1000 may further include one or more of the following components: a wireless communication module, an audio module, an external memory interface, an internal memory, a universal serial bus (USB) interface, a power management module, an antenna, Speakers, microphones, I/O modules, sensor modules, motors, cameras, or displays, etc.
  • a wireless communication module an audio module
  • an external memory interface an internal memory
  • a universal serial bus (USB) interface a power management module
  • an antenna a radio frequency division multiplexing
  • Speakers microphones, I/O modules, sensor modules, motors, cameras, or displays, etc.
  • the processor 1100 executes the instructions (sometimes may also be referred to as computer programs or codes) stored by the communication device 1000, that is, the instructions stored in the communication device can be executed on the processor 1100, so that the communication device 1000 executes the above-mentioned embodiments. method described.
  • the instruction is the instruction 1300 in the processor 1100, or the instruction is the instruction 1400 in the memory.
  • the communication apparatus 1000 may be used to implement the method corresponding to the network device in the above application embodiment.
  • the communication apparatus 1000 includes a processor 1100, and the processor 1100 is configured to execute computer programs or instructions, so that the methods corresponding to the network devices in the above application embodiments are executed.
  • the processor 1100 is configured to map the first signal to a first resource, and the transceiver 1500 is configured to transmit the first signal on the first resource.
  • the communication apparatus 1000 may be a network device or a chip configured in the network device.
  • the communication apparatus 1000 may be used to implement the method corresponding to the terminal device in the above application embodiment, and the specific function can be referred to the description in the above embodiment, which will not be repeated here.
  • the communication apparatus 1000 includes a processor 1100, and the processor 1100 is configured to execute a computer program or an instruction, so that the method corresponding to the terminal device in the above application embodiments is executed.
  • the processor 1100 is configured to determine a first resource
  • the transceiver 1500 is configured to receive the first signal on the first resource.
  • the communication apparatus 1000 may be a terminal device or a chip configured in the terminal device.
  • the processor 1100 and transceiver 1500 described in this application may be implemented in integrated circuits (ICs), analog ICs, radio frequency identifications (RFIDs), mixed-signal ICs, application specific integrated circuits (application specific integrated circuits) , ASIC), printed circuit board (printed circuit board, PCB), or electronic equipment, etc.
  • ICs integrated circuits
  • RFIDs radio frequency identifications
  • mixed-signal ICs application specific integrated circuits
  • ASIC application specific integrated circuits
  • PCB printed circuit board
  • electronic equipment etc.
  • it may be an independent device (eg, an independent integrated circuit, a mobile phone, etc.), or may be a part of a larger device (eg, a module that can be embedded in other devices). The description of the terminal device and the network device will not be repeated here.
  • FIG. 6 is a simplified schematic structural diagram of a network device provided by an embodiment of the present application, which may be, for example, a simplified structural schematic diagram of a base station.
  • the network device 2000 can be applied to the system shown in FIG. 1 to perform the operations or functions of the network device in the foregoing method embodiments. For details, refer to the descriptions in the foregoing method embodiments, which will not be repeated here.
  • the network device 2000 includes: a processor 2101 , a memory 2102 , a radio frequency unit 2201 and an antenna 2202 .
  • the processor 2101 is also called a processing unit, and is configured to support the network device to perform the functions of the network device in the foregoing method embodiments.
  • the processor 2101 may be one or more processors.
  • the one or more processors may support radio access technologies of the same standard, or may support radio access technologies of different standards (eg, LTE and NR).
  • the processor 2101 is an integrated circuit, such as one or more ASICs, or one or more DSPs, or one or more FPGAs, or a combination of these types of integrated circuits. These integrated circuits can be integrated together to form chips.
  • Memory 2102 also referred to as a storage unit, stores instructions (which may also sometimes be referred to as computer programs or code) and/or data.
  • the memory 2102 may be one memory, or may be a collective term for multiple memories or storage elements.
  • the memory 2102 and the processor 2101 may be located in the same chip or on different chips.
  • the radio frequency unit 2201 may be one or more radio frequency units.
  • the antenna 2202 is mainly used to send and receive radio frequency signals in the form of electromagnetic waves, for example, for the network device 2000 to send or receive signals to terminal devices.
  • the baseband unit 2100 includes a processor 2101 and a memory 2102, and is mainly used for baseband processing of signals, managing wireless resources, providing transmission management and interfaces, and providing functions such as clock signals.
  • the BBU 2100 can be composed of one or more single boards, and multiple single boards can jointly support a wireless access network (such as an LTE network) of a single access standard, or can respectively support wireless access systems of different access standards. Access network (such as LTE network, 5G network or other network).
  • the memory 2201 and the processor 2202 may serve one or more single boards. That is to say, the memory and processor can be provided separately on each single board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits may also be provided on each single board.
  • the transceiver unit 2200 includes a radio frequency unit 2201 and an antenna 2202, which are mainly used for transmitting and receiving radio frequency signals and converting radio frequency signals to baseband signals.
  • the radio frequency unit 2201 is a remote radio unit (remote radio unit, RRU), and the RRU and the BBU may be physically set together, or may be physically separated, that is, a distributed base station.
  • RRU remote radio unit
  • the transceiver unit 2100 may be an active antenna unit (Active Antenna Unit, AAU), that is, a hardware product that integrates a radio frequency function with an antenna.
  • AAU Active Antenna Unit
  • the radio frequency unit 2201 in the AAU refers to a radio frequency module dedicated to the AAU, and has the same function as the RRU.
  • the AAU may also include part of the baseband processing function.
  • the BBU 2100 may be configured to perform the actions described in the foregoing method embodiments that are implemented internally by the network device, and the transceiver unit 2200 may be configured to execute the network devices described in the foregoing method embodiments to send to or receive from the terminal device. Actions.
  • the BBU 2100 maps the first signal to a first resource, and the transceiver unit 2200 sends the first signal on the first resource. For specific descriptions, please refer to the above method embodiments, which are not repeated here.
  • FIG. 7 is a simplified schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • the terminal device 3000 can be applied to the system as shown in FIG. 1 to perform operations or functions of the terminal device in the foregoing method embodiments. For details, refer to the descriptions in the foregoing method embodiments, which will not be repeated here.
  • the terminal device 3000 includes a processor 3100 , a memory 3200 , a radio frequency circuit 3300 and an antenna 3400 .
  • the processor 3100 is mainly used to process communication protocols and communication data, control the terminal, execute instructions (sometimes also referred to as computer programs or codes), process data, and the like.
  • the processor 3100 may also be referred to as a processing unit, a processing board, a processing module, a processing device, and the like.
  • Memory 3200 is primarily used to store instructions (also sometimes referred to as computer programs or code) and data.
  • the memory may also be referred to as a storage medium or a storage device or the like.
  • the radio frequency circuit 3300 is mainly used for converting the baseband signal to the radio frequency signal and processing the radio frequency signal.
  • the antenna 3400 is mainly used to send and receive radio frequency signals in the form of electromagnetic waves, for example, for the terminal device 3000 to send or receive signals to network devices.
  • the terminal device 3000 further includes an input and output device 3500, such as a touch screen, a display screen, a microphone and a keyboard, etc., which are mainly used for receiving user input data and outputting data to the user.
  • FIG. 7 only shows one memory and one processor. In an actual end product, the terminal device 3000 may include multiple processors and/or multiple memories.
  • the terminal device 3000 is a mobile phone.
  • the processor 3100 can read the software program in the memory 3200, interpret and execute the instructions of the software program, and process the data of the software program.
  • the processor 3100 performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit 3300.
  • the radio frequency circuit 3300 performs radio frequency processing on the baseband signal and sends the radio frequency signal to the outside through the antenna 3400 in the form of electromagnetic waves. send.
  • the radio frequency circuit 3300 receives the radio frequency signal through the antenna 3400, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 3100, and the processor 3100 converts the baseband signal into data and performs This data is processed.
  • the processor 3100 includes a baseband processor and a central processing unit.
  • the baseband processor is mainly used to process communication protocols and communication data
  • the central processing unit is mainly used to control the entire terminal device 3000 and execute software programs. , which processes data from software programs.
  • the terminal device 3000 may include multiple baseband processors to adapt to different network standards, the terminal device 3000 may include multiple central processors to enhance its processing capability, and various components of the terminal device 3000 may be connected through various buses.
  • the baseband processor may also be expressed as a baseband processing circuit or a baseband processing chip.
  • the central processing unit can also be expressed as a central processing circuit or a central processing chip.
  • the function of processing the communication protocol and communication data may be built in the processor, or may be stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.
  • the processor 3100 and the memory 3200 may be regarded as the processing apparatus 3600 of the terminal device 3000 .
  • the processing device 3600 may be a chip.
  • the processing device 3600 may be a field programmable gate array (FPGA), a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC) ), off-the-shelf programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or a system on chip (SoC), or a central
  • CPU central processor unit, CPU
  • can also be a digital signal processing circuit digital signal processor, DSP
  • MCU microcontroller
  • PLD programmable logic device
  • the radio frequency circuit 3300 and the antenna 3400 may be regarded as the transceiver unit 3700 of the terminal device 3000 .
  • the transceiver unit 3700 may also be referred to as a transceiver, a transceiver, a transceiver, or the like.
  • the device used by the transceiver unit to implement the receiving function may be regarded as a receiving unit, and the device used to implement the sending function in the transceiver unit may be regarded as a transmitting unit.
  • the receiving unit may also be referred to as a receiver, a receiver, a receiving circuit, and the like
  • the transmitting unit may be referred to as a transmitter, a transmitter, or a transmitting circuit, or the like.
  • the processing apparatus 3600 may be configured to perform the actions described in the foregoing method embodiments that are implemented inside the terminal device, and the transceiver unit 3700 may be configured to execute the actions described in the foregoing method embodiments that the terminal device sends to or receives from the network device. .
  • the processing apparatus 3600 determines a first resource, and the transceiver unit 3700 receives the first signal on the first resource.
  • the above method embodiments which are not repeated here.
  • the terminal device and/or the network device may perform some or all of the steps in the embodiments of the present application, these steps or operations are only examples, and the embodiments of the present application may also perform other operations or various Variation of operations.
  • various steps may be performed in different orders presented in the embodiments of the present application, and may not be required to perform all the operations in the embodiments of the present application.
  • the present application also provides a computer-readable storage medium, where a computer program or instruction is stored in the computer-readable storage medium, and when the computer program or instruction is executed, the execution of the network device or the terminal device in the foregoing method embodiments is implemented. method.
  • the functions described in the above embodiments can be implemented in the form of software functional units and sold or used as independent products.
  • the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the storage medium includes: U disk, removable hard disk, read-only memory ROM, random access memory RAM, magnetic disk or optical disk and other media that can store program codes.
  • the present application further provides a computer program product, the computer program product includes: computer program code, when the computer program code is run on a computer, the computer is made to execute any of the foregoing method embodiments by a terminal device or a network device. Methods.
  • the present application also provides a system, which includes a terminal device and a network device.
  • An embodiment of the present application further provides a processing apparatus, including a processor and an interface; the processor is configured to execute the method executed by the terminal device or the network device involved in any of the foregoing method embodiments.
  • the disclosed system, apparatus and method may be implemented in other manners.
  • the division of this unit is only for one logical function division.
  • multiple units or components may be combined or integrated into another system, or some features may be ignored or not implement.
  • the shown or discussed mutual coupling, or direct coupling, or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
  • Units described as separate components may or may not be physically separated, and components shown 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 in this embodiment.
  • the above-mentioned embodiments it may be implemented in whole or in part by software, hardware, firmware or any combination thereof.
  • software it can be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated.
  • the computer may be a general purpose computer, special purpose computer, computer network, or other programmable device.
  • the computer instructions may be stored in or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server or data center Transmission to another website site, computer, server, or data center by wire (eg, coaxial cable, optical fiber, digital subscriber line, DSL) or wireless (eg, infrared, wireless, microwave, etc.).
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes an integration of one or more available media.
  • the available media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, high-density digital video discs (DVDs)), or semiconductor media (eg, solid state discs, SSD)) etc.
  • ordinal numbers such as “first” and “second” mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the size, content, order, timing, priority or importance, etc.
  • the configuration information of the first signal and the configuration information of the second signal may be the same configuration information or different configuration information, and this name does not indicate the information size, content, priority, or importance.
  • At least one refers to one or more, and "a plurality” refers to two or more.
  • At least one item(s) or similar expressions, refers to one item(s) or multiple item(s), ie any combination of these items, including any combination of single item(s) or plural item(s).
  • at least one (a) of a, b, or c means: a, b, c, a and b, a and c, b and c, or a and b and c.
  • an item includes one or more of the following: A, B, and C
  • a total of three elements of A, B and C are used as examples above to illustrate the optional items of the item.
  • B corresponding to A indicates that B is associated with A, and B can be determined according to A.
  • determining B according to A does not mean that B is only determined according to A, and B may also be determined according to A and/or other information.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente demande concerne un procédé de communication et un appareil de communication. Un dispositif réseau mappe un premier signal avec une première ressource, puis envoie le premier signal sur la première ressource ; et de manière correspondante, un dispositif terminal reçoit le premier signal sur la première ressource, le premier signal comprenant un premier canal physique et un premier signal de référence, la première ressource comprenant un premier symbole de domaine temporel dans un domaine temporel, et les premières ressources étant distribuées dans un domaine fréquentiel à un intervalle d'un ou de deux sous-porteuses adjacentes. Selon la présente demande, le premier signal peut être utilisé simultanément pour la perception et la communication, ce qui est favorable à l'amélioration de l'efficacité de travail et des performances d'un système intégré de perception-communication.
PCT/CN2022/081591 2021-03-19 2022-03-18 Procédé de communication et appareil de communication WO2022194263A1 (fr)

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CN118057887A (zh) * 2022-11-18 2024-05-21 华为技术有限公司 一种资源指示方法及装置
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