WO2023169562A1 - 多天线通感一体化系统isac的功率分配方法及设备 - Google Patents

多天线通感一体化系统isac的功率分配方法及设备 Download PDF

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WO2023169562A1
WO2023169562A1 PCT/CN2023/080817 CN2023080817W WO2023169562A1 WO 2023169562 A1 WO2023169562 A1 WO 2023169562A1 CN 2023080817 W CN2023080817 W CN 2023080817W WO 2023169562 A1 WO2023169562 A1 WO 2023169562A1
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performance
power
power allocation
signal
indication information
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PCT/CN2023/080817
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English (en)
French (fr)
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袁璞
纪子超
孙布勒
李健之
丁圣利
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维沃移动通信有限公司
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Publication of WO2023169562A1 publication Critical patent/WO2023169562A1/zh

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    • 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
    • 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
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/28—Details of pulse systems
    • G01S7/285—Receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0426—Power distribution
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters

Definitions

  • the present application belongs to the field of communication technology, and specifically relates to a power distribution method and equipment for a multi-antenna integrated system ISAC.
  • Future communication equipment will integrate the dual functions of communication and perception through a protocol stack based on Integrated Sensing and Communication (ISAC) technology, realizing hardware sharing, spectrum sharing, and protocol interoperability between communication and perception signals. , thus realizing the integrated design of communication and sensing functions.
  • ISAC Integrated Sensing and Communication
  • the core feature of future ISAC devices is the realization of waveform multiplexing between communication and sensing signals. Through the waveform defined by the protocol, information transmission and target detection are carried out in the spectrum specified by the protocol. Furthermore, through a shared protocol stack, the channel and spatial information obtained by the communication system and the sensing system can be interoperated, thereby realizing mutual assistance between communication and sensing, and further optimizing the overall performance.
  • the biggest challenge facing ISAC technology is the collaborative work of communication and perception.
  • the function of the communication system is to transmit information, so the optimization goal of the communication system is to approximate the Shannon channel capacity described in information theory;
  • the function of the perception system is target detection, such as a typical radar system, and its optimization goal is the target parameters (distance, speed , Doppler, etc.) the optimal lower bound of the estimated variance, that is, the Cramér-Rao bound of the fuzzy function.
  • the difference in focus of the above two functions makes it difficult to optimize the performance of communication and perception at the same time in the ISAC system design.
  • the only way to achieve a compromise between the two is according to the needs. Therefore, for those skilled in the art, how to allocate power so as to satisfy communication and sensing performance is an urgent technical problem that needs to be solved.
  • Embodiments of the present application provide a power distribution method and device for a multi-antenna synaesthetic integrated system ISAC, which can solve the problem of how to perform power distribution in the ISAC.
  • a power allocation method for a multi-antenna integrated system ISAC including:
  • the first device obtains the first transmit power and the first power allocation parameter in the angle domain
  • the first device sends a first signal that satisfies the first performance and the second performance to the second device based on the first transmission power and the first power allocation parameter.
  • a power allocation method for a multi-antenna integrated system ISAC including:
  • the second device receives the first signal sent by the first device, where the first signal is sent based on the first transmission power and the first power allocation parameter in the angle domain, and satisfies the first performance and the second performance.
  • a multi-antenna ISAC power distribution device including:
  • An acquisition module configured to acquire the first transmit power and the first power allocation parameter in the angle domain
  • a sending module configured to send a first signal that satisfies the first performance and the second performance to the second device based on the first transmission power and the first power allocation parameter.
  • a multi-antenna ISAC power distribution device including:
  • a receiving module configured to receive a first signal sent by the first device, where the first signal is sent based on the first transmission power and the first power allocation parameter in the angle domain, and satisfies the first performance and the second performance.
  • a first device in a fifth aspect, includes a processor and a memory.
  • the memory stores programs or instructions that can be run on the processor.
  • the program or instructions are implemented when executed by the processor. The steps of the method as described in the first aspect.
  • a first device including a processor and a communication interface, wherein the processor is configured to obtain the first transmission power and the first power allocation parameter in the angle domain; the communication interface is configured to obtain the first transmission power and the first power allocation parameter in the angle domain based on the The first transmission power and the first power allocation parameter are used to send a first signal that satisfies the first performance and the second performance to the second device.
  • a second device in a seventh aspect, includes a processor and a memory.
  • the memory stores programs or instructions that can be run on the processor.
  • the program or instructions are executed by the processor.
  • a second device including a processor and a communication interface, wherein the communication interface is used to receive a first signal sent by the first device, and the first signal is based on the first transmission power and angle.
  • the first power allocation parameter of the domain is sent, and the first performance and the second performance are met.
  • a ninth aspect provides a communication system, including: a first device and a second device.
  • the terminal can be used to perform the steps of the multi-antenna ISAC power allocation method as described in the first aspect.
  • the network side device can Steps of performing the power allocation method of the multi-antenna ISAC as described in the second aspect.
  • a readable storage medium is provided. Programs or instructions are stored on the readable storage medium. When the programs or instructions are executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method are implemented as described in the first aspect. The steps of the method described in the third aspect.
  • a chip in an eleventh aspect, includes a processor and a communication interface.
  • the communication interface is coupled to the processor.
  • the processor is used to run programs or instructions to implement the method described in the first aspect. method, or implement a method as described in the second aspect.
  • a computer program/program product is provided, the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement the first aspect or the second aspect.
  • the first device sends a first signal to the second device based on the first transmit power and the first power allocation parameter; the first signal is determined based on the first transmit power and the first power allocation parameter, and satisfies
  • appropriate transmit power and power allocation parameters in the angle domain can be selected based on actual business and scenario requirements, taking into account both communication performance and perception performance.
  • Figure 1 is a structural diagram of a wireless communication system applicable to the embodiment of the present application.
  • Figure 2 is one of the flow diagrams of the power allocation method of multi-antenna ISAC provided by the embodiment of the present application;
  • Figure 3 is a schematic interactive flow diagram of the power allocation method of multi-antenna ISAC provided by the embodiment of the present application;
  • Figure 4a is one of the schematic diagrams of the radar interaction scenario of the multi-antenna ISAC power allocation method provided by the embodiment of the present application;
  • Figure 4b is the second schematic diagram of the radar interaction scenario of the multi-antenna ISAC power allocation method provided by the embodiment of the present application;
  • Figure 4c is the third schematic diagram of the radar interaction scenario of the multi-antenna ISAC power allocation method provided by the embodiment of the present application.
  • Figure 5 is a second schematic flowchart of the multi-antenna ISAC power allocation method provided by the embodiment of the present application.
  • Figure 6 is one of the structural schematic diagrams of the power distribution device of the multi-antenna ISAC provided by the embodiment of the present application;
  • Figure 7 is the second structural schematic diagram of the power distribution device of the multi-antenna ISAC provided by the embodiment of the present application.
  • Figure 8 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • Figure 9 is a schematic diagram of the hardware structure of the first device provided by the embodiment of the present application.
  • Figure 10 is a schematic structural diagram of a second device provided by an embodiment of the present application.
  • first, second, etc. in the description and claims of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and that "first" and “second” are distinguished objects It is usually one type, and the number of objects is not limited.
  • the first object can be one or multiple.
  • “and/or” means that the connected At least one of the objects, the character “/” generally indicates that the related objects are an "or” relationship.
  • LTE Long Term Evolution
  • LTE-Advanced, LTE-A Long Term Evolution
  • LTE-A Long Term Evolution
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-carrier Frequency Division Multiple Access
  • NR New Radio
  • FIG. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable.
  • the wireless communication system includes a terminal 11 and a network side device 12.
  • the terminal 11 can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a handheld computer, a netbook, or a super mobile personal computer.
  • Tablet Personal Computer Tablet Personal Computer
  • laptop computer laptop computer
  • PDA Personal Digital Assistant
  • PDA Personal Digital Assistant
  • UMPC ultra-mobile personal computer
  • UMPC mobile Internet device
  • MID mobile Internet device
  • augmented reality augmented reality, AR
  • VR virtual reality
  • robots wearable devices
  • Vehicle user equipment VUE
  • pedestrian terminal pedestrian terminal
  • PUE pedestrian terminal
  • smart home home equipment with wireless communication functions, such as refrigerators, TVs, washing machines or furniture, etc.
  • game consoles personal computers (personal computer, PC), teller machine or self-service machine and other terminal-side devices.
  • Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets) bracelets, smart anklets, etc.), smart wristbands, smart clothing, etc.
  • the network side equipment 12 may include access network equipment or core network equipment, where the access network equipment may also be called wireless access network equipment, radio access network (Radio Access Network, RAN), radio access network function or wireless access network unit.
  • Access network equipment can include base stations, WLAN access points or WiFi nodes, etc.
  • the base station can be called Node B, Evolved Node B (eNB), access point, Base Transceiver Station (BTS), radio base station , radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home B-Node, Home Evolved B-Node, Transmission Reception Point (TRP) or the above
  • eNB Evolved Node B
  • BTS Base Transceiver Station
  • ESS Extended Service Set
  • Home B-Node Home Evolved B-Node
  • TRP Transmission Reception Point
  • Future communication equipment will integrate the dual functions of communication and sensing through the protocol stack based on ISAC technology, realizing hardware sharing, spectrum sharing, and protocol interoperability between communication and sensing signals, thereby realizing communication and sensing. Integrated design of intelligent functions.
  • the core feature of future ISAC devices is the realization of waveform multiplexing between communication and sensing signals. Through the waveform defined by the protocol, information transmission and target detection are carried out in the spectrum specified by the protocol. Furthermore, through a shared protocol stack, the channel and spatial information obtained by the communication system and the sensing system can be interoperated, thereby realizing mutual assistance between communication and sensing, and further optimizing the overall performance.
  • the biggest challenge facing ISAC technology is the collaborative work of communication and perception.
  • the function of the communication system is to transmit information, so the optimization goal of the communication system is to approximate the Shannon channel capacity described in information theory;
  • the function of the perception system is target detection, such as a typical radar system, and its optimization goal is the target parameters (distance, speed , Doppler, etc.), the optimal lower limit of the estimated variance, that is, the Cramér-Rao bound of the fuzzy function.
  • This difference in functional focus makes it difficult to optimize the performance of communication and perception at the same time in the ISAC system design, and can only achieve a compromise between the two according to needs.
  • waveform design is the focus.
  • the key to integrated waveform design is to minimize the interference between communication signals and sensing signals, meet the communication and sensing functional requirements, and improve spectrum efficiency while ensuring system performance.
  • the integrated waveform can be multiplexed, including time division multiplexing, frequency division multiplexing, and space division multiplexing, or it can be shared, that is, designing a new integrated waveform.
  • designing it is necessary to consider that the integrated waveform must have communication functions. Whether it is mainly about radar detection function, find a balance point in performance.
  • Common fusion waveforms are mainly divided into single-carrier waveforms and multi-carrier waveforms: single-carrier waveform design is usually combined with spread spectrum technology, such as direct sequence spread spectrum (Direct-Sequence Spread Spectrum, DSSS), chirp spread spectrum (Chirp Spread Spectrum) , CSS); the typical multi-carrier integrated waveform is the Orthogonal Frequency Division Multiplexing (OFDM) waveform, which has certain advantages over the single-carrier spread spectrum integrated waveform, such as higher spectral efficiency, Flexible bandwidth resource allocation, no range-Doppler coupling effect, etc., easily integrated with existing 5G communication systems.
  • OFDM Orthogonal Frequency Division Multiplexing
  • the traditional multi-carrier integrated waveform is mainly based on OFDM waveform. Its advantages mainly lie in simple random signal generation, full digital processing, and extremely high time-frequency processing gain. However, since the high accuracy of OFDM radar relies on the joint detection of multiple OFDM symbols, and the cyclic prefix (CP) of OFDM symbols does not participate in the measurement, it will cause a certain overhead; at the same time, the OFDM waveform has a high impact on the frequency spectrum. It has poor adaptability to scenarios and can only detect Doppler frequency shifts up to 10% of the subcarrier spacing, which has limitations in application scenarios.
  • CP cyclic prefix
  • Orthogonal Time Frequency Space (OTFS) waveform as a sensing waveform overcomes these two shortcomings of the aforementioned OFDM waveform.
  • M corresponds to the number of subcarriers
  • N corresponds to the number of symbols.
  • the OTFS signal only needs to add a CP in front of N symbols to avoid inter-slot interference; while the traditional OFDM signal needs to add a CP in front of each symbol to avoid inter-symbol interference, requiring a total of N CPs. Therefore, the overhead of OTFS is significantly reduced, which means that more energy can be used for sensing the signal itself, thereby improving target detection and tracking capabilities.
  • OTFS radar due to the natural tolerance of OTFS signals to high Doppler, OTFS radar has good detection capabilities for large Doppler frequency shifts in high-speed scenarios, and its performance is much better than OFDM radar.
  • OTFS signals usually use random signals in the delay-Doppler (DD) domain.
  • Machine symbol set generation The transmit power of each symbol in the random symbol set is equal.
  • Using the random symbol set can avoid being identified and intercepted.
  • the originator since the originator is known, it will not hinder the detection of echoes.
  • pilots are mainly used to obtain information such as Channel State Information (CSI), which usually requires a higher received signal to interference plus noise ratio (Signal to Interference plus Noise Ratio, SINR) to ensure Measurement reliability. Therefore, in a communication system, the transmit power of each symbol in the same frame may be different.
  • CSI Channel State Information
  • SINR Signal to Interference plus Noise Ratio
  • the radar sensing signal requires sending as many sample points as possible to increase the accumulated energy of the echo signal and ensure the accuracy of detection; the communication pilot signal requires reducing the number of sent sample points as much as possible while ensuring the accuracy of CSI estimation. to reduce resource overhead.
  • the transmitting and receiving equipment of radar sensing signals are usually the same, and there are usually no special requirements for the design of the transmitting symbol set; the transmitting and receiving equipment of communication pilot signals are different, and the transmitting symbol set usually needs to be specially designed to ensure the accuracy of the pilot. Detection performance.
  • the optimal power allocation method is usually water filling power allocation.
  • the core idea is to allocate more power to better sub-channels, thereby maximizing the total throughput.
  • the MIMO communication system can further pre-equalize the multipath channel through precoding technology to approximate the gain of each sub-channel (that is, approximate the eigenvalues corresponding to each subspace of the channel matrix).
  • the best communication strategy for ISAC systems is to use uniform power distribution among multiple antennas.
  • the corresponding optimization strategy is to maximize the effective SNR of the radar echo signal (defined as the sum of SNRs of each sub-path echo).
  • the sensing signal of the ISAC system in order to obtain better radar sensing performance, non-uniform power distribution can be used among multiple antennas, and higher power is tended to be allocated to sub-channels with poor sensing channel quality.
  • the power distributed in the n t discrete angle direction is Assume that the number and orientation of the detected objects are known, that is, they are in the radar tracking state.
  • Let a i, l represent the angular direction corresponding to the l-th echo path of the i-th detected object. Then in this direction, the radar can maximize
  • the power distribution of the effective SNR of the echo signal can be calculated as the following formula (1). where K is the number of detected objects.
  • the synaesthetic signals may be used for both communication and perception purposes at the same time, so its role
  • the degree-domain power allocation method needs to take into account both communication and sensing performance, and make adaptive adjustments according to the requirements of different scenarios and services.
  • the ISAC system based on the 3GPP protocol is usually deployed by operators. Its core requirement is to use communication signals to realize sensing functions. Therefore, the performance of the communication system should be guaranteed first. On this basis, the sensing performance should be optimized through further technical means. Ultimately, the purpose of using communication signals to achieve appropriate precision sensing performance is achieved. Despite this, it does not rule out that users in some subdivisions may be based on perception and communication as a supplement. In this case, the design principle of the system changes to optimizing communication performance while ensuring perceptual performance.
  • an appropriate angle domain power allocation scheme can be selected according to different needs of business and scenarios, taking into account or focusing on communication performance or radar sensing performance according to needs.
  • first performance and the second performance in this application may also be referred to as the first performance requirement and the second performance requirement.
  • the first performance and the second performance may be specific numerical values or ranges, etc.
  • the embodiments of the present application are This is not limiting.
  • FIG. 2 is one of the schematic flow diagrams of the multi-antenna ISAC power allocation method provided by an embodiment of the present application. As shown in Figure 2, the method provided by this embodiment includes:
  • Step 101 The first device obtains the first transmission power and the first power allocation parameter in the angle domain;
  • the first device may be a transmitting side device, and the first device obtains the first transmit power and the first power allocation parameter in the angle domain, and the first power allocation parameter represents, for example, a ratio of power allocation in different discrete angle directions.
  • the first transmit power and the first power allocation parameter may be determined based on channel and/or signal measurement results, demodulation performance of the receiver, etc., or may be determined based on channel and/or signal measurement results, demodulation performance of the receiver, etc.
  • the initial value agreed upon in the agreement is obtained by adjusting it, which is not limited in the embodiments of the present application.
  • Step 102 Based on the first transmission power and the first power allocation parameter, the first device sends the data that satisfies the first performance and the second performance to the second device.
  • the first signal determined based on the first transmission power and the first power allocation parameter satisfies the first performance and the second performance.
  • whether the first signal satisfies the first performance and the second performance may be determined based on information fed back by the receiving end. For example, the receiving end feeds back the first performance index and/or the second performance index corresponding to the first signal, and/or the receiving end directly feeds back whether the first performance index corresponding to the first signal satisfies the first performance upper limit and/or the first performance. lower limit; and/or whether the second performance index corresponding to the first signal satisfies the second performance upper limit and/or the first performance lower limit.
  • the radar is self-receiving, that is, the transmitting end and receiving end of the radar are in the same device; for a multi-station ISAC system, the radar is self-receiving, that is, the transmitting end and receiving end of the radar are
  • the terminals are on different devices.
  • the first device sends a first signal to the second device based on the first transmission power and the first power allocation parameter, and the first signal may be used for both communication and/or sensing purposes.
  • the first performance is communication performance
  • the second performance is perception performance
  • the first performance is perception performance
  • the second performance is communication performance
  • the first performance indicator is the communication performance indicator and the second performance indicator is the perception performance indicator
  • the first performance index is the perception performance index and the second performance index is the communication performance index.
  • the first device sends a first signal to the second device based on the first transmission power and the first power allocation parameter; the first signal is determined based on the first transmission power and the first power allocation parameter, and satisfies the first
  • appropriate transmit power and power allocation parameters in the angle domain can be selected according to the actual business and scenario needs, taking into account both communication performance and perception performance.
  • the parameter characterizing the radar sensing performance is recorded as Pf radar .
  • This parameter may be the SNR of the radar echo signal, the number and amplitude of peaks of the radar ambiguity function, etc.
  • the preset lower limit of acceptable perceptual performance is pfr 0
  • the preset upper limit of acceptable perceptual performance is pfr 1 .
  • the parameter characterizing the communication performance is recorded as pf comm .
  • This parameter is estimated and fed back by the communication receiver side, including at least one of the following: Reference Signal Receiving Power (RSRP), Received Signal Strength Indication , RSSI), Signal to Noise Ratio (SNR), SINR, Bit Error Rate (Bit Error Rate, BER), Block Error Rate (BLock Error Rate, BLER), throughput, channel capacity, spectral efficiency, etc.
  • RSRP Reference Signal Receiving Power
  • RSSI Signal to Noise Ratio
  • SINR Signal to Noise Ratio
  • SINR Signal to Noise Ratio
  • Bit Error Rate Bit Error Rate
  • Bit Error Rate Bit Error Rate
  • BLER Block Error Rate
  • the preset lower limit of acceptable communication performance is pfc 0
  • the preset upper limit of acceptable communication performance is pfc 1 .
  • the maximum transmit power of the MIMO-ISAC multi-antenna system is P max .
  • step 101 can be implemented in the following ways:
  • An implementation method a An implementation method a:
  • the first device When the second signal meets the first performance and the second signal does not meet the upper limit of the second performance, the first device reduces the second transmission power to obtain the first transmission power; the first power allocation parameter is the second Power allocation parameters;
  • the second signal is determined based on the second transmission power and the second power allocation parameter.
  • the first device on the sending side selects an initial global second sending power P 0 , where the value of P 0 may be specified by the protocol, or may be determined based on signal and/or channel measurement results, receiver demodulation performance, etc. , including at least one of the following: RSRP, RSSI, SNR, SINR, BER, BLER, throughput, channel capacity, spectral efficiency, etc. Assuming that the dimension of angular resolution is N ang , the transmitting side selects a set of initial transmit power allocation parameters:
  • pa 0 defines the power allocation ratio of P 0 in different discrete angular directions.
  • the communication system can perform ideal precoding.
  • the better power allocation strategy for the communication system is equal power allocation in the angle domain, that is,
  • the second power allocation parameter pa pa 0 .
  • the parameter of the perception performance under the initial configuration is pf radar (P 0 , pa) (ie, the perception performance index), and the parameter of the communication performance under the initial configuration is pf comm (P 0 , pa) (ie, the communication performance index).
  • the first performance index and/or the second performance index corresponding to the second signal may be determined based on information fed back by the receiving side. Similar to the first signal, details will not be described in the embodiments of this application.
  • the first performance is communication performance and the second performance is perception performance.
  • the second signal meets the communication performance and the second signal does not meet the upper limit of perception performance, that is, the perception performance index corresponding to the second signal is greater than pfr 1 .
  • the second transmission power can be reduced and the second power allocation parameter pa can be used as the first power allocation parameter.
  • the perception performance index obtained based on the reduced second transmission power satisfies the perception performance, that is, pfr 0 ⁇ pf radar (P, pa) ⁇ pfr 1 .
  • the communication performance index also satisfies the communication performance.
  • P P 0 -a1 ⁇ 0 , where a1 is a number greater than 0, and ⁇ 0 is the step size of power adjustment.
  • ⁇ 0 may be pre-configured or agreed upon by the agreement.
  • ⁇ 0 can also be determined based on signal and/or channel measurement results, receiver demodulation performance, etc.
  • the first performance is perception performance
  • the second performance is communication performance.
  • the communication performance index corresponding to the second signal is greater than pfc 1 .
  • the second transmission power can be reduced, and the second power allocation parameter pa can be used as the first power allocation parameter.
  • the communication performance index of the signal obtained based on the reduced second transmission power satisfies the communication performance, that is, pfc 0 ⁇ pf comm (P, pa) ⁇ pfc 1 .
  • the signal's perception performance index also meets the perception performance.
  • P P 0 -a1 ⁇ 0 , where a1 is a number greater than 0, and ⁇ 0 is the step size of power adjustment.
  • ⁇ 0 may be pre-configured or agreed upon by the agreement.
  • ⁇ 0 can also be determined based on signal and/or channel measurement results, receiver demodulation performance, etc.
  • the second power allocation parameter may also be adjusted, and/or Increase the second transmit power.
  • the initial second transmit power and second power allocation parameters are obtained, and based on the actual business and scenario requirements, the total transmit power and the power allocation among multiple antennas are adjusted, that is, the appropriate transmit power and angle domain are selected.
  • Power allocation parameters take into account communication performance and perception performance.
  • the first device adjusts the second power allocation parameter to obtain the first power allocation parameter; the first transmit power is second transmission power;
  • the second signal is determined based on the second transmission power and the second power allocation parameter.
  • the first performance is communication performance and the second performance is perception performance.
  • the second signal meets the communication performance and the second signal does not meet the lower limit of perception performance (that is, pf radar (P 0 , pa) ⁇ pfr 0 )
  • the perceptual performance index can be improved by adjusting the power allocation parameters in the angle domain.
  • the second transmission power P 0 is used as the first transmission power.
  • the perception performance index (pf radar (P 0 , pa)) obtained based on the adjusted second power allocation parameter (ie, the first power allocation parameter pa 1 ) satisfies the perception performance.
  • the communication performance index also satisfies the communication performance.
  • the first performance is the perception performance
  • the second performance is the communication performance
  • the communication performance index can be improved by adjusting the power allocation parameters in the angle domain.
  • the second transmission power is used as the first transmission power.
  • the communication performance index (pf radar (P 0 , pa)) obtained based on the adjusted second power allocation parameter (ie, the first power allocation parameter pa 1 ) satisfies the communication performance. At this time, the perceived performance index also meets the perceived performance.
  • the second power allocation parameter may also be adjusted, and/or Increase the second transmit power.
  • the initial second transmit power and second power allocation parameters are obtained, and based on the actual business and scenario requirements, the total transmit power and the power allocation among multiple antennas are adjusted, that is, the appropriate transmit power and angle domain are selected.
  • Power allocation parameters take into account communication performance and perception performance.
  • the first device increases the second transmission power to obtain the adjusted second transmission power; the second signal is determined based on the second transmission power and the second power allocation parameter;
  • the first device adjusts the second power allocation parameter to obtain the first power allocation parameter;
  • the second indicator of the second performance is determined based on the adjusted second transmit power and the second power allocation parameter;
  • the third signal is determined based on the adjusted second transmit power and the second power allocation parameter;
  • the first device reduces the adjusted second transmit power to obtain the first transmit power; the first power allocation parameter is the second power allocation parameter.
  • the first performance is communication performance
  • the second performance is perception performance.
  • the third signal is determined based on the adjusted second transmit power and the second power allocation parameter.
  • the first performance index and/or the second performance index corresponding to the third signal can be determined based on information fed back by the receiving side. Similar to the first signal, details will not be described in the embodiments of this application.
  • the first device adjusts the second power Allocate parameters to obtain the first power allocation parameter pa 1 ;
  • P represents the adjusted second transmission power, and pa represents the second power allocation parameter;
  • the first device When the third signal satisfies the communication performance and the third signal does not meet the upper limit of the perceptual performance (the perceptual performance index corresponding to the third signal is pf radar (P, pa) ⁇ pfr 1 ), the first device reduces the adjusted
  • the second transmit power is the first transmit power P 1 ;
  • the first power allocation parameter is the second power allocation parameter; pa represents the second power allocation parameter.
  • the perception performance index obtained based on the reduced second transmission power satisfies the perception performance, that is, pfr 0 ⁇ pf radar (P 1 , pa 1 ) ⁇ pfr 1 .
  • the communication performance index also satisfies the communication performance.
  • P 1 P-a1 ⁇ 0 , where a1 is a number greater than 0, and ⁇ 0 is the step size of power adjustment.
  • ⁇ 0 may be pre-configured or agreed upon by the agreement.
  • ⁇ 0 can also be determined based on signal and/or channel measurement results, receiver demodulation performance, etc.
  • the first performance is perception performance
  • the second performance is communication performance
  • the third signal is determined based on the adjusted second transmit power and the second power allocation parameter.
  • the first performance index and/or the second performance index corresponding to the third signal can be determined based on information fed back by the receiving side. Similar to the first signal, details will not be described in the embodiments of this application.
  • the first device adjusts the second power Allocate parameters to obtain the first power allocation parameter; P represents the adjusted second transmission power, pa represents the second power allocation parameter; or,
  • the first device decreases
  • the adjusted second transmit power is the first transmit power P1; the first power allocation parameter is the second power allocation parameter; pa represents the second power allocation parameter.
  • the communication performance index obtained based on the reduced second transmission power ie, the first transmission power P 1 satisfies the communication performance, that is, pfc 0 ⁇ pf comm (P 1 , pa 1 ) ⁇ pfc 1 .
  • the perceived performance index also meets the perceived performance.
  • P 1 P-a1 ⁇ 0 , where a1 is a number greater than 0, and ⁇ 0 is the step size of power adjustment.
  • ⁇ 0 may be pre-configured or agreed upon by the agreement.
  • ⁇ 0 can also be determined based on signal and/or channel measurement results, receiver demodulation performance, etc.
  • the second power allocation parameter may also be adjusted, and/or Increase the second transmit power.
  • the first device adjusts the second power allocation parameter and obtains the first power allocation parameter, it may also include:
  • the first device adjusts the adjusted second transmit power to obtain the first transmit power; the fourth signal is based on the adjusted second transmit power and the first Power allocation parameters are determined.
  • a fourth signal is determined based on the adjusted second transmit power and the first power allocation parameter.
  • the first performance index and/or the second performance index corresponding to the fourth signal may be determined based on information fed back by the receiving side. Similar to the first signal, details will not be described in the embodiments of this application.
  • the first performance is sensing performance
  • the second performance is communication performance.
  • the fourth signal does not meet the lower limit of communication performance (that is, pf comm (P, pa 1 ) is less than pfr 0 )
  • the adjustment can also be made.
  • the second transmit power P is adjusted to obtain the first transmit power P 1 .
  • the perceptual performance index meets the perceptual performance
  • the first device adjusts the adjusted second transmit power to obtain the first transmit power, including:
  • the first device obtains the power adjustment step size
  • the first device obtains the first transmission power based on the power adjustment step size and the adjusted second transmission power.
  • the first device obtains the power adjustment step size ⁇ 1 and obtains the first transmission power based on the power adjustment step size and the adjusted second transmission power.
  • ⁇ 1 may be pre-configured or agreed upon by the agreement.
  • ⁇ 1 can also be determined based on signal and/or channel measurement results, receiver demodulation performance, etc.
  • the first device obtains the target power allocation parameter corresponding to the second performance
  • the first device determines the adjustment step size of power distribution based on the target power distribution parameter and the second power distribution parameter;
  • the first device obtains the first power allocation parameter based on the second power allocation parameter and the adjustment step size of the power allocation. number. Specifically, the target power allocation parameter corresponding to the second performance is obtained.
  • the target power allocation parameter can be the optimal power allocation parameter pa L corresponding to the second performance in theory. Assume that the second performance is the radar sensing performance. If pf radar (P , pa L ) ⁇ pfr 0 , then calculate the adjustment step size of power allocation according to pa L
  • pf radar (P, pa l ) ⁇ pfr 0 it means that the second performance index satisfies
  • pf comm (P, pa l ) ⁇ pfc 0 it means that the first performance index also satisfies the first performance.
  • L can be agreed upon in the protocol, set by the sending side, or preconfigured.
  • the initial second transmit power and second power allocation parameters are obtained, and based on the actual business and scenario requirements, the total transmit power and the power allocation among multiple antennas are adjusted, that is, the appropriate transmit power and angle domain are selected.
  • Power allocation parameters take into account communication performance and perception performance.
  • the process of this method is shown in Figure 3.
  • the sensing receiver on the left and the ISAC transmitter are the same device, and there is no need to execute the left process.
  • the method further includes:
  • the first device receives the first indication information fed back by the second device, and determines whether the first signal satisfies the first performance based on the first indication information; the first indication information is used to indicate the first performance index corresponding to the first signal; or,
  • the first device receives the first indication information fed back by the second device, and the first indication information is used to indicate whether the first signal satisfies the first performance; or,
  • the method further includes:
  • the first device receives the first indication information fed back by the second device, and determines whether the first signal satisfies the second performance based on the first indication information; the first indication information is used to indicate the second performance index corresponding to the first signal; or,
  • the first device receives first indication information fed back by the second device, and the first indication information is used to indicate whether the first signal satisfies the second performance.
  • the first device includes a transmitting end and a receiving end of the radar, or the first device only includes a transmitting end of the radar.
  • the method further includes:
  • the first device receives the second indication information fed back by the second device, and determines whether the first signal satisfies the first performance based on the second indication information; the first indication information is used to indicate the first performance index corresponding to the first signal; or,
  • the first device receives the first indication information fed back by the second device, and the second indication information is used to indicate whether the first signal meets the first performance; or,
  • the method also includes:
  • the first device receives the second indication information fed back by the second device, and determines based on the second indication information whether the first signal is Whether the second performance is satisfied; the second indication information is used to indicate the second performance index corresponding to the first signal; or,
  • the first device receives second indication information fed back by the second device, and the second indication information is used to indicate whether the first signal satisfies the second performance.
  • each state has different requirements for feedback from the receiving side.
  • State III communication + perception state.
  • the ISAC system can trigger different feedback as needed based on its own working status to reduce feedback overhead.
  • a 1-bit message can be used to explicitly indicate to the communication receiving side whether feedback of communication performance indicators is needed, and a 1-bit message can be used to explicitly indicate to the sensing receiving side whether feedback of sensing performance indicators is needed.
  • Implicit indication can also be performed using pilot pulses/pilot sequences.
  • the adjustment of power distribution is based on feedback information.
  • the communication feedback period T fc and the sensing feedback period T fr can be dynamically determined by the transmitting side based on parameters such as channel changes or the relative speed of the target tracked by the radar, or can be predefined by the protocol.
  • the numerical values of T fc and T fr may be the same or different.
  • T fc and T fr can be configured by the sending side to the communication receiving side and the sensing receiving side respectively.
  • information feedback from the receiving end is achieved through signaling interaction, and the transmission power and/or power allocation parameters can be adjusted based on the feedback information, that is, appropriate transmission power and power allocation parameters in the angle domain are selected to take into account communication Performance and perceived performance.
  • the thresholds pfc 0 , pfc 1 , pfr 0 , pfr 1 , and the feedback period of the receiving side are usually configured by the sending side (usually the network side device (such as the base station)) to the communication receiving side (usually the terminal), which can be passed Broadcast signaling Master Information Block (MIB), System Information Block (SIB), Media Access Control Control Element (MAC CE), or Downlink Control Information , DCI), dedicated radio resource control (Radio Resource Control, RRC) and other configurations.
  • the communication receiving side can feedback communication performance indicator information through uplink control information (UCI), pilot or uplink data.
  • UCI uplink control information
  • the angle domain For a single-station ISAC, assuming that the initial second transmit power is P 0 , the angle domain
  • the second power allocation parameter is
  • Step 1 If the communication performance index meets the communication performance and the perceptual performance index satisfies the perceptual performance, then use the above-mentioned second transmission power and the second power allocation parameter to send the first signal;
  • Step 2 If the communication performance index does not meet the communication performance and adjusting the second power allocation parameter cannot meet the communication performance, increase the second transmission power until the communication performance index meets the communication performance;
  • Step 3 If the perceptual performance index meets the perceptual performance at this time, use the increased second transmission power and the second power allocation parameter to send the first signal; or,
  • the sensing performance index is greater than the upper limit of sensing performance at this time, the increased second transmission power is reduced to obtain the first transmission power; at this time, the sensing performance index meets the sensing performance, and the communication performance index meets the communication performance, then Send the first signal using the first transmit power and the second power allocation parameter; or,
  • the perceptual performance index is less than the lower limit of perceptual performance at this time, calculate the theoretical optimal power allocation parameter pa L ; if the perceptual performance index is still less than the lower limit of perceptual performance at this time, continue to increase the increased second transmit power. , repeat the above step 3 until the perceptual performance index meets the perceptual performance and the communication performance index also meets the communication performance; if the perceptual performance index meets the perceptual performance at this time, the adjustment step size is calculated based on the theoretical optimal power allocation parameter pa L , and The second power allocation parameter is adjusted based on the adjustment step size until the perception performance index meets the perception performance, and the power allocation parameter pa l is obtained. If the communication performance index also meets the communication performance at this time, the increased second transmission power and power allocation are used The parameter pa l sends the first signal.
  • transmission power and power allocation parameters need to prioritize communication performance indicators.
  • step 1
  • pf radar (P, pa l ) ⁇ pfr 0 stop updating the power allocation parameters.
  • the sending side obtains information about whether the communication performance index meets the communication performance through feedback from the receiving side of communication.
  • transmission power and power allocation parameters need to prioritize communication performance indicators.
  • the radar sensing receiving side of the multi-station ISAC system is not on the transmitting side, so the evaluation of radar sensing performance needs to be fed back from the radar receiving side to the transmitting side.
  • step 1
  • the sending side obtains information about whether the sensing performance index meets the sensing performance by sensing the feedback from the receiving side. If it is the situation of Figure 4a and Figure 4c, the sensing receiving side directly sends the radar sensing performance index information to the sensing sending side, which can be the specific value of pf radar , or it can be a 1-bit indication, indicating pf radar (P, The size relationship between pa) and pfc 0 . If it is the situation in Figure 4b, the sensing receiving side can: (1) report the radar sensing performance indicator information to the sensing function network element, and the sensing function network element sends sensing control/configuration information to the sensing transmitting side to perform power allocation parameters. Adjustment. (2) Report the radar sensing measurement quantity to the sensing function network element, and the sensing function network element calculates the radar sensing performance index, sends sensing control/configuration information to the sensing sending side, and adjusts the power allocation parameters.
  • the sensing receiving side can: (1) report the radar sensing performance indicator information to the sens
  • the radar perception performance index is improved by adjusting the angle domain power allocation. Calculate the power allocation parameter that optimizes radar sensing performance ((for example, calculated according to formula (1))), denoted as pa L . If pf radar (P, pa L ) ⁇ pfr 0 , perform step 3.
  • pf radar (P, pa l ) ⁇ pfr 0 stop updating the power allocation parameters.
  • the sending side obtains information about whether the communication performance index meets the communication performance through feedback from the receiving side of communication.
  • step 1
  • the communication performance index is improved by adjusting the power allocation parameters in the angle domain. Calculate the power allocation parameters that optimize communication performance (such as equal power allocation or water filling algorithm, depending on whether there is precoding), denoted as pa L . If pf comm (P, pa L ) ⁇ pfc 0 , perform step 3.
  • pf comm (P, pa l ) ⁇ pfc 0 stop updating the power allocation parameters.
  • transmission power and power allocation parameters need to give priority to sensing performance indicators.
  • the radar sensing receiving side of the multi-station ISAC system is not on the transmitting side, so the evaluation of radar sensing performance needs to be fed back from the radar receiving side to the transmitting side.
  • the sending side obtains information about whether the sensing performance index meets the sensing performance by sensing the feedback from the receiving side. if It is the situation of Figure 4a and Figure 4c, then the sensing receiving side directly sends the radar sensing performance index information to the sensing sending side, which can be the specific value of pf radar , or it can be a 1-bit indication, indicating pf radar (P, pa ) and pfc 0 size relationship. If it is the situation in Figure 4b, the sensing receiving side can: (1) report the radar sensing performance indicator information to the sensing function network element, and the sensing function network element sends sensing control/configuration information to the sensing transmitting side to perform power allocation parameters. Adjustment. (2) Report the radar sensing measurement quantity to the sensing function network element, and the sensing function network element calculates the radar sensing performance index, sends sensing control/configuration information to the sensing sending side, and adjusts the power allocation parameters.
  • the sensing receiving side can: (1) report the radar sensing performance indicator information to the sens
  • step 1
  • the communication performance index is improved by adjusting the angle domain power allocation. Calculate the power allocation parameters that optimize communication performance (such as equal power allocation or water filling algorithm, depending on whether there is precoding), denoted as pa L . If pf comm (P, pa L ) ⁇ pfc 0 , perform step 3.
  • pf comm (P, pa l ) ⁇ pfc 0 stop updating the power allocation parameters.
  • the sending side obtains information about whether the sensing performance index meets the sensing performance by sensing the feedback from the receiving side.
  • FIG. 5 is a second schematic flowchart of the multi-antenna ISAC power allocation method provided by an embodiment of the present application. As shown in Figure 5, the method in this embodiment includes:
  • Step 201 The second device receives a first signal sent by the first device.
  • the first signal is sent based on the first transmission power and the first power allocation parameter in the angle domain, and satisfies the first performance and the second property.
  • the first performance is communication performance
  • the second performance is perception performance
  • the first performance is perception performance
  • the second performance is communication performance
  • the method further includes:
  • the second device feeds back first indication information to the first device
  • the second device feeds back first indication information to the first device; the first indication information is used to indicate the first performance index corresponding to the first signal; or the first indication information is used to indicate the Whether the first signal meets the first performance; or,
  • the method further includes:
  • the second device feeds back first indication information to the first device; the first indication information is used to indicate the first performance index corresponding to the first signal; or the first indication information is used to indicate the Whether the first signal satisfies the first performance.
  • the first device includes a transmitting end and a receiving end of a radar, or the first device only includes a transmitting end of a radar.
  • the method further includes:
  • the second device feeds back second indication information to the first device; the second indication information is used to indicate the second performance index corresponding to the first signal; or the second indication information is used to indicate the Whether the first signal meets the second performance; or,
  • the method further includes:
  • the second device feeds back second indication information to the first device; the second indication information is used to indicate the second performance index corresponding to the first signal; or the second indication information is used to indicate the Whether the first signal satisfies the second performance;.
  • the execution subject may be a multi-antenna ISAC power distribution device.
  • the power distribution apparatus of the multi-antenna ISAC performs the power distribution method of the multi-antenna ISAC as an example to illustrate the power distribution apparatus of the multi-antenna ISAC provided by the embodiment of the present application.
  • FIG. 6 is one of the structural schematic diagrams of a power distribution device for a multi-antenna ISAC provided by an embodiment of the present application.
  • the multi-antenna ISAC power distribution device provided in this embodiment includes:
  • the acquisition module 210 is used to acquire the first transmission power and the first power allocation parameter in the angle domain;
  • the sending module 220 is configured to send a first signal that satisfies the first performance and the second performance to the second device based on the first transmission power and the first power allocation parameter.
  • the acquisition module 210 is specifically used for:
  • the first device When the second signal meets the first performance and the second signal does not meet the upper limit of the second performance, the first device reduces the second transmission power to obtain the first transmission power;
  • the first power allocation parameter is the second power allocation parameter;
  • the second signal is determined based on the second transmit power and the second power allocation parameter.
  • the acquisition module 210 is specifically used for:
  • the first device adjusts the second power allocation parameter to obtain the first power allocation parameter.
  • the first transmission power is the second transmission power
  • the second signal is determined based on the second transmit power and the second power allocation parameter.
  • the acquisition module 210 is specifically used for:
  • the first device increases the second transmission power to obtain the adjusted second transmission power; the second signal is based on the second transmission power. The power is determined by the second power allocation parameter;
  • the first device adjusts the second power allocation parameter to obtain the first power Allocation parameters; the third signal is determined based on the adjusted second transmit power and the second power allocation parameter;
  • the first device reduces the adjusted second transmission power to obtain the The first transmit power; the first power allocation parameter is the second power allocation parameter.
  • the device also includes:
  • the processing module is configured to: when the fourth signal does not meet the lower limit of the second performance, the first device adjusts the adjusted second transmission power to obtain the first transmission power; The fourth signal is determined based on the adjusted second transmit power and the first power allocation parameter.
  • processing module is specifically used to:
  • the first transmit power is obtained based on the power adjustment step size and the adjusted second transmit power.
  • processing module is specifically used to:
  • the first power allocation parameter is obtained based on the second power allocation parameter and the adjustment step size of the power allocation.
  • the first performance is communication performance
  • the second performance is perception performance
  • the first performance is perception performance
  • the second performance is communication performance
  • the device also includes:
  • a receiving module configured to receive first indication information fed back by the second device when the first performance is communication performance, and determine whether the first signal satisfies the first performance based on the first indication information;
  • the first indication information is used to indicate the first performance index corresponding to the first signal; or,
  • the second performance is communication performance
  • receive first indication information fed back by the second device and determine whether the first signal satisfies the second performance based on the first indication information; the first indication The information is used to indicate the second performance indicator corresponding to the first signal; or,
  • the first device includes a transmitting end and a receiving end of a radar, or the first device only includes a transmitting end of a radar.
  • the receiving module is also used for:
  • the first device only includes a transmitting end of a radar, and the first performance is sensing performance
  • receive second indication information fed back by the second device and determine the first signal based on the second indication information. Whether the first performance is satisfied; the second indication information is used to indicate the first performance index corresponding to the first signal; or,
  • the first device only includes a transmitting end of a radar
  • the second performance is sensing performance
  • receive second indication information fed back by the second device and determine the first signal based on the second indication information. Whether the second performance is met; the second indication information is used to indicate the second performance index corresponding to the first signal; or,
  • the device of this embodiment can be used to execute the method of any of the foregoing first device-side method embodiments. Its specific implementation process and technical effects are similar to those in the first device-side method embodiment. For details, see First Device The detailed introduction of the side method embodiment will not be described again here.
  • FIG. 7 is a second structural schematic diagram of a multi-antenna ISAC power distribution device provided by an embodiment of the present application. As shown in Figure 7, the multi-antenna ISAC power distribution device provided in this embodiment includes:
  • the receiving module 310 is configured to receive a first signal sent by the first device, where the first signal is sent based on the first transmission power and the first power allocation parameter in the angle domain, and satisfies the first performance and the second performance.
  • the first performance is communication performance
  • the second performance is perception performance
  • the first performance is perception performance
  • the second performance is communication performance
  • the device also includes:
  • the sending module 320 is configured to feed back first indication information to the first device when the first performance is communication performance; the first indication information is used to indicate the first performance corresponding to the first signal. Index; or, the first indication information is used to indicate whether the first signal meets the first performance;
  • first indication information is fed back to the first device; the first indication information is used to indicate the first performance index corresponding to the first signal; or, The first indication information is used to indicate whether the first signal satisfies the first performance.
  • the first device includes a transmitting end and a receiving end of a radar, or the first device only includes a transmitting end of a radar.
  • the sending module 320 is configured to feed back the second indication information to the first device when the first device only includes a transmitting end of a radar and the first performance is sensing performance;
  • the second indication information is used to indicate the second performance index corresponding to the first signal; or, the second indication information is used to indicate whether the first signal satisfies the second performance; or,
  • second indication information is fed back to the first device; the second indication information is used to indicate the first A second performance index corresponding to a signal; or, the second indication information is used to indicate whether the first signal satisfies the second performance.
  • the device of this embodiment can be used to perform the method of any of the foregoing second device-side method embodiments. Its specific implementation process and technical effects are similar to those in the second device-side method embodiment. For details, please refer to the second device The detailed introduction of the side method embodiment will not be described again here.
  • the power distribution device of the multi-antenna ISAC in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or may be a component in the electronic device, such as an integrated circuit or chip.
  • the electronic device may be a terminal or other devices other than the terminal.
  • terminals may include but are not limited to the types of terminals 11 listed above, and other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., which are not specifically limited in the embodiment of this application.
  • the multi-antenna ISAC power distribution device provided by the embodiment of the present application can implement each process implemented by the method embodiments of Figures 2 to 5, and achieve the same technical effect. To avoid duplication, the details will not be described here.
  • this embodiment of the present application also provides a communication device 700, which includes a processor 701 and a memory 702.
  • the memory 702 stores programs or instructions that can be run on the processor 701, for example.
  • the communication device 700 is a terminal, when the program or instruction is executed by the processor 701, each step of the power allocation method embodiment of the multi-antenna ISAC is implemented, and the same technical effect can be achieved.
  • the communication device 700 is a network-side device, when the program or instruction is executed by the processor 701, each step of the power allocation method embodiment of the multi-antenna ISAC is implemented, and the same technical effect can be achieved. To avoid duplication, it will not be repeated here. Repeat.
  • An embodiment of the present application also provides a first device, including a processor and a communication interface.
  • the processor is configured to obtain the first transmission power and the first power allocation parameter in the angle domain;
  • the communication interface is configured to obtain the first transmission power based on the first power allocation parameter.
  • Send power and the first power allocation parameter and send the first information that satisfies the first performance and the second performance to the second device.
  • Number This first device embodiment corresponds to the above-mentioned first device-side method embodiment.
  • Each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this first device embodiment, and can achieve the same technical effect.
  • the embodiment of the present application also provides a network side device.
  • the network side device 800 includes: an antenna 71 , a radio frequency device 72 , a baseband device 73 , a processor 75 and a memory 75 .
  • the antenna 71 is connected to the radio frequency device 72 .
  • the radio frequency device 72 receives information through the antenna 71 and sends the received information to the baseband device 73 for processing.
  • the baseband device 73 processes the information to be sent and sends it to the radio frequency device 72.
  • the radio frequency device 72 processes the received information and then sends it out through the antenna 71.
  • the above frequency band processing device may be located in the baseband device 73 , and the method performed by the network side device in the above embodiment may be implemented in the baseband device 73 .
  • the baseband device 73 includes a baseband processor 75 and a memory 75 .
  • the baseband device 73 may include, for example, at least one baseband board on which a plurality of chips are disposed, as shown in FIG.
  • the program performs the network device operations shown in the above method embodiment.
  • the network side device of the baseband device 73 may also include a network interface 76 for exchanging information with the radio frequency device 72.
  • the interface is, for example, a common public radio interface (CPRI).
  • the network side device 800 in the embodiment of the present application also includes: instructions or programs stored in the memory 75 and executable on the processor 75.
  • the processor 75 calls the instructions or programs in the memory 75 to execute the various operations shown in Figure 6. The method of module execution and achieving the same technical effect will not be described in detail here to avoid duplication.
  • Embodiments of the present application also provide a second device, including a processor and a communication interface.
  • the communication interface is configured to receive a first signal sent by the first device, where the first signal is based on the first transmission power and angle domain.
  • the first power allocation parameter is sent and satisfies the first performance and the second performance.
  • This second device embodiment corresponds to the above-mentioned second device-side method embodiment.
  • Each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this second device embodiment, and can achieve the same technical effect.
  • FIG. 10 is a schematic diagram of the hardware structure of a terminal that implements an embodiment of the present application.
  • the terminal 1000 includes but is not limited to: radio frequency unit 1001, network module 1002, audio output unit 1003, input unit 1004, sensor 1005, display unit 1006, user input unit 1007, interface unit 1008, memory 1009, processor 1010, etc. at least some parts of it.
  • the terminal 1000 may also include a power supply (such as a battery) that supplies power to various components.
  • the power supply may be logically connected to the processor 1010 through a power management system, thereby managing charging, discharging, and power consumption through the power management system. Management and other functions.
  • the terminal structure shown in FIG. 10 does not constitute a limitation on the terminal.
  • the terminal may include more or fewer components than shown in the figure, or some components may be combined or arranged differently, which will not be described again here.
  • the input unit 1004 may include a graphics processing unit (GPU) 10041 and a microphone 10042.
  • the graphics processor 10041 is responsible for the image capture device (GPU) in the video capture mode or the image capture mode. Process the image data of still pictures or videos obtained by cameras (such as cameras).
  • the display unit 1006 may include a display panel 10061, which may be a liquid crystal display or an organic light emitting diode. The display panel 10061 is configured in the form of a tube.
  • the user input unit 1007 includes a touch panel 10071 and at least one of other input devices 10072 . Touch panel 10071, also known as touch screen.
  • the touch panel 10071 may include two parts: a touch detection device and a touch controller.
  • Other input devices 10072 may include, but are not limited to, physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be described again here.
  • the radio frequency unit 1001 after receiving downlink data from the network side device, can transmit it to the processor 1010 for processing; in addition, the radio frequency unit 1001 can send uplink data to the network side device.
  • the radio frequency unit 1001 includes, but is not limited to, an antenna, at least one amplifier, transceiver, coupler, low noise amplifier, duplexer, etc.
  • Memory 1009 may be used to store software programs or instructions as well as various data.
  • the memory 1009 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage program or instruction area may store an operating system, an application program or instructions required for at least one function (such as a sound playback function, image playback function, etc.), etc.
  • memory 1009 may include volatile memory or nonvolatile memory, or memory 1009 may include both volatile and nonvolatile memory.
  • non-volatile memory can also include non-volatile memory, where the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), programmable read-only memory (Programmable ROM, PROM), Erasable programmable read-only memory (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • ROM Read-Only Memory
  • PROM programmable read-only memory
  • PROM programmable read-only memory
  • PROM programmable read-only memory
  • Erasable PROM Erasable programmable read-only memory
  • EPROM electrically erasable programmable read-only memory
  • flash memory electrically erasable programmable read-only memory
  • Volatile memory can be random access memory (Random Access Memory, RAM), static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDRSDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synch link DRAM) , SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DRRAM).
  • Memory 1009 in embodiments of the present application includes, but is not limited to, these and any other suitable type of memory such as at least one disk storage device, flash memory device, or other non-volatile solid-state storage device.
  • the processor 1010 may include one or more processing units; optionally, the processor 1010 may integrate an application processor and a modem processor, where the application processor mainly processes operating systems, user interfaces, application programs or instructions, etc. In operation, the modem processor mainly processes wireless communication signals, such as the baseband processor. It can be understood that the above modem processor may not be integrated into the processor 1010.
  • the radio frequency unit 1001 is used to receive the first signal sent by the first device, the first signal is sent based on the first transmission power and the first power allocation parameter in the angle domain, and satisfies the first performance and the second performance. .
  • the first performance is communication performance
  • the second performance is perception performance
  • the first performance is perception performance
  • the second performance is communication performance
  • the radio frequency unit 1001 is also used to:
  • the first indication information is used to indicate the first performance index corresponding to the first signal; or, the first indication information is used to indicate whether the first signal satisfies the first performance;
  • first indication information is fed back to the first device; the first indication information is used to indicate the first performance index corresponding to the first signal; or, The first indication information is used to indicate whether the first signal satisfies the first performance.
  • the first device includes a transmitting end and a receiving end of a radar, or the first device only includes a transmitting end of a radar.
  • the radio frequency unit 1001 is also used to:
  • second indication information is fed back to the first device; the second indication information is used to indicate the first A second performance index corresponding to a signal; or, the second indication information is used to indicate whether the first signal meets the second performance; or,
  • second indication information is fed back to the first device; the second indication information is used to indicate the first A second performance index corresponding to a signal; or, the second indication information is used to indicate whether the first signal satisfies the second performance.
  • Embodiments of the present application also provide a readable storage medium.
  • Programs or instructions are stored on the readable storage medium.
  • each process of the power allocation method embodiment of the multi-antenna ISAC is implemented. And can achieve the same technical effect. To avoid repetition, they will not be described again here.
  • the processor is the processor in the terminal described in the above embodiment.
  • the readable storage medium includes computer readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disk or optical disk, etc.
  • An embodiment of the present application further provides a chip.
  • the chip includes a processor and a communication interface.
  • the communication interface is coupled to the processor.
  • the processor is used to run programs or instructions to implement the power distribution of the above-mentioned multi-antenna ISAC.
  • Each process of the method embodiment can achieve the same technical effect, so to avoid repetition, it will not be described again here.
  • chips mentioned in the embodiments of this application may also be called system-on-chip, system-on-a-chip, system-on-chip or system-on-chip, etc.
  • Embodiments of the present application further provide a computer program/program product, the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to realize the power of the above-mentioned multi-antenna ISAC
  • the computer program/program product is executed by at least one processor to realize the power of the above-mentioned multi-antenna ISAC
  • An embodiment of the present application also provides a communication system, including: a first device and a second device.
  • the first device can be used to perform the steps of the multi-antenna ISAC power allocation method as described above.
  • the second device can The steps of performing the power allocation method of the multi-antenna ISAC as described above.
  • the methods of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is better. implementation.
  • the technical solution of the present application can be embodied in the form of a computer software product that is essentially or contributes to the existing technology.
  • the computer software product is stored in a storage medium (such as ROM/RAM, disk , CD), including several instructions to cause a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in various embodiments of this application.

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Abstract

本申请公开了一种多天线通感一体化系统ISAC的功率分配方法及设备，属于通信技术领域，本申请实施例的多天线通感一体化系统ISAC的功率分配方法包括：第一设备获取第一发送功率以及角度域的第一功率分配参数；所述第一设备基于所述第一发送功率和所述第一功率分配参数，向第二设备发送满足第一性能和第二性能的第一信号。

Description

多天线通感一体化系统ISAC的功率分配方法及设备
相关申请的交叉引用
本申请要求于2022年3月11日提交的申请号为202210238475.9，发明名称为“多天线通感一体化系统ISAC的功率分配方法及设备”的中国专利申请的优先权，其通过引用方式全部并入本申请。
技术领域
本申请属于通信技术领域，具体涉及一种多天线通感一体化系统ISAC的功率分配方法及设备。
背景技术
未来的通信设备通过基于通感一体化系统(Integrated Sensing and Communication，ISAC)技术的协议栈，将集成通信和感知的双重功能，在通信和感知信号之间实现了硬件共用，频谱共享，协议互通，从而实现了通信和感知功能的一体化设计。未来ISAC设备的核心特征是实现了通信和感知信号间的波形复用。通过协议定义的波形，在协议规定频谱中进行信息传递和目标检测。进一步的，通过共用的协议栈，使得通信系统和感知系统各自获取的信道和空间信息可以互通，从而实现通信和感知间的相互辅助，实现整体性能的进一步优化。
ISAC技术面临的最大挑战就是通信和感知的协同工作问题。通信系统的功能是传递信息，因此通信系统的优化目标是逼近信息论中所阐述的香农信道容量；感知系统的功能是目标检测，例如典型的雷达系统，其优化目标则是目标参数(距离，速度，多普勒等)估计方差的最优下界，即模糊函数的Cramér-Rao界。上述两种功能侧重的不同，使得ISAC系统设计上很难同时最优化通信和感知的性能，只能根据需求在二者间取得折衷。因此，对于本领域技术人员来说，如何进行功率分配使得满足通信和感知性能，是亟需解决的技术问题。
发明内容
本申请实施例提供一种多天线通感一体化系统ISAC的功率分配方法及设备，能够解决ISAC中如何进行功率分配的问题。
第一方面，提供了一种多天线通感一体化系统ISAC的功率分配方法，包括：
第一设备获取第一发送功率以及角度域的第一功率分配参数；
所述第一设备基于所述第一发送功率和所述第一功率分配参数，向第二设备发送满足第一性能和第二性能的第一信号。
第二方面，提供了一种多天线通感一体化系统ISAC的功率分配方法，包括：
第二设备接收第一设备发送的第一信号，所述第一信号为基于第一发送功率和角度域的第一功率分配参数发送的，且满足第一性能和第二性能。
第三方面，提供了一种多天线ISAC的功率分配装置，包括：
获取模块，用于获取第一发送功率以及角度域的第一功率分配参数；
发送模块，用于基于所述第一发送功率和所述第一功率分配参数，向第二设备发送满足第一性能和第二性能的第一信号。
第四方面，提供了一种多天线ISAC的功率分配装置，包括：
接收模块，用于接收第一设备发送的第一信号，所述第一信号为基于第一发送功率和角度域的第一功率分配参数发送的，且满足第一性能和第二性能。
第五方面，提供了一种第一设备，该终端包括处理器和存储器，所述存储器存储可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如第一方面所述的方法的步骤。
第六方面，提供了一种第一设备，包括处理器及通信接口，其中，所述处理器用于获取第一发送功率以及角度域的第一功率分配参数；所述通信接口用于基于所述第一发送功率和所述第一功率分配参数，向第二设备发送满足第一性能和第二性能的第一信号。
第七方面，提供了一种第二设备，该网络侧设备包括处理器和存储器，所述存储器存储可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如第三方面所述的方法的步骤。
第八方面，提供了一种第二设备，包括处理器及通信接口，其中，所述通信接口用于接收第一设备发送的第一信号，所述第一信号为基于第一发送功率和角度域的第一功率分配参数发送的，且满足第一性能和第二性能。
第九方面，提供了一种通信系统，包括：第一设备及第二设备，所述终端可用于执行如第一方面所述的多天线ISAC的功率分配方法的步骤，所述网络侧设备可用于执行如第二方面所述的多天线ISAC的功率分配方法的步骤。
第十方面，提供了一种可读存储介质，所述可读存储介质上存储程序或指令，所述程序或指令被处理器执行时实现如第一方面所述的方法的步骤，或者实现如第三方面所述的方法的步骤。
第十一方面，提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现如第一方面所述的方法，或实现如第二方面所述的方法。
第十二方面，提供了一种计算机程序/程序产品，所述计算机程序/程序产品被存储在存储介质中，所述计算机程序/程序产品被至少一个处理器执行以实现如第一方面或第二方面所述的多天线ISAC的功率分配方法的步骤。
在本申请实施例中，第一设备基于第一发送功率和第一功率分配参数向第二设备发送第一信号；第一信号为基于第一发送功率和第一功率分配参数确定的，且满足第一性能和第二性能，上述方案中可以根据实际业务和场景的需求，选取合适的发送功率以及角度域的功率分配参数，兼顾通信性能和感知性能。
附图说明
图1是本申请实施例可应用的无线通信系统的结构图；
图2是本申请实施例提供的多天线ISAC的功率分配方法的流程示意图之一；
图3是本申请实施例提供的多天线ISAC的功率分配方法的交互流程示意图；
图4a是本申请实施例提供的多天线ISAC的功率分配方法的雷达交互场景示意图之一；
图4b是本申请实施例提供的多天线ISAC的功率分配方法的雷达交互场景示意图之二；
图4c是本申请实施例提供的多天线ISAC的功率分配方法的雷达交互场景示意图之三；
图5是本申请实施例提供的多天线ISAC的功率分配方法的流程示意图之二；
图6是本申请实施例提供的多天线ISAC的功率分配装置的结构示意图之一；
图7是本申请实施例提供的多天线ISAC的功率分配装置的结构示意图之二；
图8是本申请实施例提供的通信设备的结构示意图；
图9是本申请实施例提供的第一设备的硬件结构示意图；
图10是本申请实施例提供的第二设备的结构示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员所获得的所有其他实施例，都属于本申请保护的范围。
本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象，而不用于描述特定的顺序或先后次序。应该理解这样使用的术语在适当情况下可以互换，以便本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施，且“第一”、“第二”所区别的对象通常为一类，并不限定对象的个数，例如第一对象可以是一个，也可以是多个。此外，说明书以及权利要求中“和/或”表示所连接对 象的至少其中之一，字符“/”一般表示前后关联对象是一种“或”的关系。
值得指出的是，本申请实施例所描述的技术不限于长期演进型(Long Term Evolution，LTE)/LTE的演进(LTE-Advanced，LTE-A)系统，还可用于其他无线通信系统，诸如码分多址(Code Division Multiple Access，CDMA)、时分多址(Time Division Multiple Access，TDMA)、频分多址(Frequency Division Multiple Access，FDMA)、正交频分多址(Orthogonal Frequency Division Multiple Access，OFDMA)、单载波频分多址(Single-carrier Frequency Division Multiple Access，SC-FDMA)和其他系统。本申请实施例中的术语“系统”和“网络”常被可互换地使用，所描述的技术既可用于以上提及的系统和无线电技术，也可用于其他系统和无线电技术。以下描述出于示例目的描述了新空口(New Radio，NR)系统，并且在以下大部分描述中使用NR术语，但是这些技术也可应用于NR系统应用以外的应用，如第6代(6th Generation，6G)通信系统。
图1示出本申请实施例可应用的一种无线通信系统的框图。无线通信系统包括终端11和网络侧设备12。其中，终端11可以是手机、平板电脑(Tablet Personal Computer)、膝上型电脑(Laptop Computer)或称为笔记本电脑、个人数字助理(Personal Digital Assistant，PDA)、掌上电脑、上网本、超级移动个人计算机(ultra-mobile personal computer，UMPC)、移动上网装置(Mobile Internet Device，MID)、增强现实(augmented reality，AR)/虚拟现实(virtual reality，VR)设备、机器人、可穿戴式设备(Wearable Device)、车载设备(Vehicle User Equipment，VUE)、行人终端(Pedestrian User Equipment，PUE)、智能家居(具有无线通信功能的家居设备，如冰箱、电视、洗衣机或者家具等)、游戏机、个人计算机(personal computer，PC)、柜员机或者自助机等终端侧设备，可穿戴式设备包括：智能手表、智能手环、智能耳机、智能眼镜、智能首饰(智能手镯、智能手链、智能戒指、智能项链、智能脚镯、智能脚链等)、智能腕带、智能服装等。需要说明的是，在本申请实施例并不限定终端11的具体类型。网络侧设备12可以包括接入网设备或核心网设备，其中，接入网设备也可以称为无线接入网设备、无线接入网(Radio Access Network，RAN)、无线接入网功能或无线接入网单元。接入网设备可以包括基站、WLAN接入点或WiFi节点等，基站可被称为节点B、演进节点B(eNB)、接入点、基收发机站(Base Transceiver Station，BTS)、无线电基站、无线电收发机、基本服务集(Basic Service Set，BSS)、扩展服务集(Extended Service Set，ESS)、家用B节点、家用演进型B节点、发送接收点(Transmission Reception Point，TRP)或所述领域中其他某个合适的术语，只要达到相同的技术效果，所述基站不限于特定技术词汇，需要说明的是，在本申请实施例中仅以NR系统中的基站为例进行介绍，并不限定基站的具体类型。
未来的通信设备通过基于ISAC技术的协议栈，将集成通信和感知的双重功能，在通信和感知信号之间实现了硬件共用，频谱共享，协议互通，从而实现了通信和感 知功能的一体化设计。未来ISAC设备的核心特征是实现了通信和感知信号间的波形复用。通过协议定义的波形，在协议规定频谱中进行信息传递和目标检测。进一步的，通过共用的协议栈，使得通信系统和感知系统各自获取的信道和空间信息可以互通，从而实现通信和感知间的相互辅助，实现整体性能的进一步优化。
ISAC技术面临的最大挑战就是通信和感知的协同工作问题。通信系统的功能是传递信息，因此通信系统的优化目标是逼近信息论中所阐述的香农信道容量；感知系统的功能是目标检测，例如典型的雷达系统，其优化目标则是目标参数(距离，速度，多普勒等)估计方差的最优下限，即模糊函数的Cramér-Rao界。这种功能侧重的不同，使得ISAC系统设计上很难同时最优化通信和感知的性能，只能根据需求在二者间取得折衷。
在雷达通信一体化设计中，波形设计是重点，一体化波形设计的关键在于尽量减小通信信号与感知信号间的干扰，满足通信、感知功能需求，在保证系统性能的前提下提高频谱效率。一体化波形可以采取复用的方式，包括时分复用、频分复用、空分复用，也可以采取共用的方式，即设计新的融合波形，设计时需要考虑一体化波形要以通信功能为主还是雷达探测功能为主，寻找性能上的平衡点。常见的融合波形主要分为单载波波形与多载波波形：单载波波形设计通常与扩频技术相结合，例如直接序列扩频(Direct-Sequence Spread Spectrum，DSSS)、啁啾扩频(Chirp Spread Spectrum，CSS)；多载波一体化波形较典型的是正交频分复用(Orthogonal Frequency Division Multiplexing，OFDM)波形，其相对于单载波扩频一体化波形存在一定优势，例如更高的频谱效率、灵活的带宽资源分配、无距离-多普勒耦合效应等，与现有5G通信系统易融合。
传统的多载波一体化波形主要是基于OFDM波形，其优势主要在于简单的随机信号生成，全数字化处理，极高的时频处理增益。然而，由于OFDM雷达的高精度依赖于多个OFDM符号的联合检测，而OFDM符号的循环前缀(Cyclic Prefix，CP)并不参与测量，因此将造成一定的开销；同时，OFDM波形对高多普勒场景适应性较差，只能检测最多达10％子载波间隔的多普勒频移，在应用场景上具有局限性。
正交时频空(Orthogonal Time Frequency Space，OTFS)波形作为感知波形则克服了前述OFDM波形的这两个缺陷。首先，对于一块相同大小的M×N资源格来说，假设M对应子载波数，N对应符号数。OTFS信号只需要在N个符号前面加一个CP避免时隙间干扰；而传统的OFDM信号需要在每个符号前面都加一个CP以避免符号间干扰，总共需要N个CP。因此OTFS的开销显著降低，这意味着其可将更多的能量用于感知信号本身，从而提升目标的检测和跟踪能力。其次，由于OTFS信号对高多普勒的天然耐受性，使得OTFS雷达对于高速场景下较大的多普勒频移具有良好的检测能力，表现大大优于OFDM雷达。
在雷达设计中，OTFS信号通常利用时延-多普勒(delay-Doppler，DD)域上的随 机的符号集生成。随机符号集中的每个符号的发送功率相等，使用随机符号集可以避免被识别和侦听，同时由于对发端已知，也不会妨碍回波的检测。在通信系统中，无论是数据还是导频/参考信号，都是为了传递确定的信息，因此不会发送随机的符号集。其次，在通信系统中，导频主要用于获取信道状态信息(Channel State Information，CSI)等信息，通常需要更高的接收信号与干扰加噪声比(Signal to Interference plus Noise Ratio，SINR)以确保测量的可靠性。因此在通信系统中，同一帧内各符号的发送功率可能并不相同。由此可知，雷达感知信号和通信导频信号在设计上主要存在以下几点区别：
1.雷达感知信号要求发送尽可能多的样点以提升回波信号的累积能量，保证检测的准确性；通信导频信号要求在保证CSI估计精度的前提下，尽可能的减少发送样点数，以减少资源开销。
2.雷达感知信号的发送和接收设备通常是同一个，对发送符号集的设计通常无特殊需求；通信导频信号的发送和接收设备不同，发送符号集通常需要经过特殊设计以保证导频的检测性能。
3.仅考虑视距(Line of Sight，LoS)路径情况下，雷达感知信号从发送端TX到接收端RX的传播距离比通信导频信号增加了一倍，因此二者对覆盖的要求存在差异。
对于多径的通信系统，其最优化的功率分配方式通常为注水(water filling)功率分配，其核心思想是为较好的子信道分配较多的功率，从而达到最大化总吞吐量的目的。同时，MIMO通信系统可以进一步通过预编码(precoding)技术对多径信道进行预均衡，从而使各个子信道的增益近似(即信道矩阵的各子空间对应的特征值近似)，可选地，在使用预编码的情况下，ISAC系统在通信方面的较佳策略是在多天线间采用均匀功率分配。
对于雷达系统，其工作目标是尽量探测到每个方向上的物体。因此其对应的优化策略是最大化雷达回波信号的有效SNR(定义为各子径回波的SNR和)。对于ISAC系统的感知信号，为了得到较好的雷达感知性能可以在多天线间采用非均匀功率分配，且倾向于在感知信道质量较差的子信道分配较高的功率。假设在第nt个离散角度方向上分配的功率为假设已知被探测物体的数量和方位，即处于雷达跟踪态，用ai，l表示第i个被探测物体的第l条回波径对应的角度方向，则该方向上，可以最大化雷达回波信号有效SNR的功率分配可以如以下公式(1)计算。其中K为被探测物体的数量。
对于ISAC系统，其中的通感信号可能同时用于通信和感知两种用途，因此其角 度域功率分配方式需要同时兼顾通信和感知性能，针对不同场景和业务的要求进行自适应调整。
例如，对于基于3GPP协议的ISAC系统，通常由运营商部署，其核心诉求是利用通信信号实现感知功能，因此通信系统的性能应该予以首要保证，在此基础上通过进一步的技术手段优化感知性能，最终达到利用通信信号实现适当精度的感知性能的目的。尽管如此，并不排除些细分领域的使用方有可能是以感知为主，通信为辅的业务。这种情况下，系统的设计原则改变为在保障感知性能的前提下，最优化通信性能。
本申请实施例中，对于多天线系统，通过调整总发送功率以及多天线间的功率分配来实现通信性能和感知性能折衷。因此，在实际系统中，可以根据业务和场景的不同需求，选取合适的角度域功率分配方案，兼顾或依需求侧重通信性能或者雷达感知性能。
需要说明的是，本申请中第一性能和第二性能也可以称为第一性能需求和第二性能需求，第一性能和第二性能可以为具体的数值或范围等，本申请实施例对此并不限定。
下面结合附图，通过一些实施例及其应用场景对本申请实施例提供的多天线ISAC的功率分配方法进行详细地说明。
图2是本申请实施例提供的多天线ISAC的功率分配方法的流程示意图之一。如图2所示，本实施例提供的方法，包括：
步骤101、第一设备获取第一发送功率以及角度域的第一功率分配参数；
具体地，第一设备可以是发送侧设备，第一设备获取第一发送功率以及角度域的第一功率分配参数，第一功率分配参数例如表示在不同离散角度方向功率分配的比例。
其中，第一发送功率以及第一功率分配参数可以根据信道和/或信号测量结果、接收机的解调性能等确定，或可以基于信道和/或信号测量结果、接收机的解调性能等对协议约定的初始值进行调整得到，本申请实施例对此并不限定。
步骤102、第一设备基于第一发送功率和第一功率分配参数，向第二设备发送满足第一性能和第二性能的。
具体地，基于第一发送功率和第一功率分配参数确定的第一信号，满足第一性能和第二性能。
可选地，第一信号是否满足第一性能和第二性能可以是基于接收端反馈的信息确定的。例如接收端反馈第一信号对应的第一性能指标和/或第二性能指标，和/或，接收端直接反馈第一信号对应的第一性能指标是否满足第一性能上限和/或第一性能下限；和/或，第一信号对应的第二性能指标是否满足第二性能上限和/或第一性能下限。
对于单站ISAC系统来说，雷达是自发自收的，即雷达的发送端和接收端处于相同的设备中；对于多站ISAC系统来说，雷达是自发他收，即雷达的发送端和接收端处于不同的设备中。
第一设备基于第一发送功率和第一功率分配参数向第二设备发送第一信号，第一信号可以用于通信和/或感知两种用途。
可选地，第一性能为通信性能，第二性能为感知性能；或，
第一性能为感知性能，第二性能为通信性能。
在第一性能为通信性能，第二性能为感知性能的情况下，第一性能指标为通信性能指标，第二性能指标为感知性能指标；
在第一性能为感知性能，第二性能为通信性能的情况下，第一性能指标为感知性能指标，第二性能指标为通信性能指标。
本实施例的方法，第一设备基于第一发送功率和第一功率分配参数向第二设备发送第一信号；第一信号为基于第一发送功率和第一功率分配参数确定的，且满足第一性能和第二性能，上述方案中可以根据实际业务和场景的需求，选取合适的发送功率以及角度域的功率分配参数，兼顾通信性能和感知性能。
本申请实施例中，将表征雷达感知性能的参数记作Pfradar，该参数可以是雷达回波信号的SNR，雷达模糊函数的峰值数量和幅度等。预设可接受感知性能的下限为pfr0，预设可接受感知性能的上限为pfr1。将表征通信性能的参数记作pfcomm，该参数由通信接收机侧估计并反馈，包括以下至少一项参考信号接收功率(Reference Signal Receiving Power，RSRP)，接收的信号强度指示(Received Signal Strength Indication，RSSI)，信噪比(Signal to Noise Ratio，SNR)，SINR，误码率(Bit Error Rate，BER)，误块率(BLock Error Rate，BLER)，吞吐量，信道容量，谱效等。预设可接受通信性能的下限为pfc0，预设可接受通信性能的上限为pfc1。MIMO-ISAC多天线系统的最大发送功率为Pmax。
在一实施例中，步骤101可以通过如下几种方式实现：
一种实现方式a：
获取第二发送功率以及角度域的第二功率分配参数；
在第二信号满足第一性能，且所述第二信号不满足第二性能的上限的情况下，第一设备减小第二发送功率，得到第一发送功率；第一功率分配参数为第二功率分配参数；
其中，第二信号为基于第二发送功率和第二功率分配参数确定。
具体地，发送侧的第一设备选定初始的全局第二发送功率P0，其中P0的值可以由协议规定，也可以根据信号和/或信道的测量结果、接收机解调性能等确定，包括以下至少一项：RSRP，RSSI，SNR，SINR，BER，BLER，吞吐量，信道容量，谱效等。假设角度分辨率的维度Nang，发送侧选定一组初始的发送功率分配参数：
可选地，pa0定义了P0在不同离散角度方向的功率分配比例。可选地，在可获得准确CSI的情况下，通信系统可以进行理想预编码，此时对通信系统的较佳功率分配策略为在角度域等功率分配，即
第二功率分配参数pa＝pa0。
初始配置下的感知性能的参数为pfradar(P0，pa)(即感知性能指标)，初始配置下的通信性能的参数为pfcomm(P0，pa)(即通信性能指标)。
可选地，第二信号对应的第一性能指标和/或第二性能指标可以基于接收侧反馈的信息确定，与第一信号类似，本申请实施例中不再赘述。
示例性地，第一性能为通信性能，第二性能为感知性能，在第二信号满足通信性能，且第二信号不满足感知性能的上限，即第二信号对应的感知性能指标大于pfr1的情况下，即感知性能溢出，此时可以减少第二发送功率，并将第二功率分配参数pa作为第一功率分配参数。
基于减小后的第二发送功率(即第一发送功率)得到的感知性能指标满足感知性能，即pfr0≤pfradar(P，pa)≤pfr1。此时，通信性能指标也满足通信性能。
其中，P＝P0-a1×ε0，其中，a1为大于0的数，ε0为功率调整的步长。
可选地，ε0可以是预先配置的，或协议约定的。
可选地，ε0还可以根据信号和/或信道的测量结果、接收机解调性能等确定。
示例性地，第一性能为感知性能，第二性能为通信性能，在第二信号满足感知性能，且第二信号不满足通信性能的上限，即第二信号对应的通信性能指标大于pfc1的情况下，即通信性能溢出，此时可以减少第二发送功率，并将第二功率分配参数pa作为第一功率分配参数。
基于减小后的第二发送功率(即第一发送功率)得到的信号的通信性能指标满足通信性能，即pfc0≤pfcomm(P，pa)≤pfc1。此时，信号的感知性能指标也满足感知性能。
其中，P＝P0-a1×ε0，其中，a1为大于0的数，ε0为功率调整的步长。
可选地，ε0可以是预先配置的，或协议约定的。
可选地，ε0还可以根据信号和/或信道的测量结果、接收机解调性能等确定。
可选地，在减小第二发送功率之后，若第一性能指标不满足第一性能，和/或，第二性能指标不满足第二性能，还可以调整第二功率分配参数，和/或增大第二发送功率。
上述实施方式中，获取初始的第二发送功率和第二功率分配参数，基于实际业务和场景的需求，通过调整总发送功率以及多天线间的功率分配，即选取合适的发送功率以及角度域的功率分配参数，兼顾通信性能和感知性能。
另一种实现方式b：
获取第二发送功率以及角度域的第二功率分配参数；
在所述第二信号满足第一性能，且所述第二信号不满足第二性能的下限的情况下，第一设备调整第二功率分配参数，得到第一功率分配参数；第一发送功率为第二发送功率；
其中，第二信号为基于第二发送功率和第二功率分配参数确定的。
可选地，第二发送功率以及第二功率分配参数参见实现方式a中的描述，此处不再赘述。
示例性地，第一性能为通信性能，第二性能为感知性能，在第二信号满足通信性能，且第二信号不满足感知性能的下限(即pfradar(P0，pa)＜pfr0)的情况下，此时可以通过调整角度域的功率分配参数来提升感知性能指标。并将第二发送功率P0作为第一发送功率。
基于调整后的第二功率分配参数(即第一功率分配参数pa1)得到的感知性能指标(pfradar(P0，pa))满足感知性能。此时，通信性能指标也满足通信性能。
示例性地，第一性能为感知性能，第二性能为通信性能，在第二信号满足感知性能，且第二信号不满足通信性能的下限(即第二信号对应的通信性能指标pfcomm(P0，pa)＜pfc0)的情况下，此时可以通过调整角度域的功率分配参数来提升通信性能指标。并将第二发送功率作为第一发送功率。
基于调整后的第二功率分配参数(即第一功率分配参数pa1)得到的通信性能指标(pfradar(P0，pa))满足通信性能。此时，感知性能指标也满足感知性能。
可选地，在调整第二功率分配参数之后，若第一性能指标不满足第一性能，和/或，第二性能指标不满足第二性能，还可以调整第二功率分配参数，和/或增大第二发送功率。
上述实施方式中，获取初始的第二发送功率和第二功率分配参数，基于实际业务和场景的需求，通过调整总发送功率以及多天线间的功率分配，即选取合适的发送功率以及角度域的功率分配参数，兼顾通信性能和感知性能。
另一种实现方式c：
获取第二发送功率以及角度域的第二功率分配参数；
在第二信号不满足第一性能的情况下，第一设备增大第二发送功率，得到调整后的第二发送功率；第二信号为基于第二发送功率和第二功率分配参数确定的；
在第三信号满足所述第一性能，且第三信号不满足第二性能的下限的情况下，第一设备调整第二功率分配参数，得到第一功率分配参数；第二性能的第二指标为基于调整后的第二发送功率以及第二功率分配参数确定的；第三信号为基于调整后的第二发送功率和第二功率分配参数确定的；
在第三信号满足第一性能需求，且所述第三信号不满足第二性能的上限的情况下， 第一设备减小调整后的第二发送功率，得到第一发送功率；第一功率分配参数为第二功率分配参数。
可选地，第二发送功率以及第二功率分配参数参见实现方式a中的描述，此处不再赘述。
示例性地，第一性能为通信性能，第二性能为感知性能，在第二信号不满足通信性能(即第二信号对应的通信性能指标pfcomm(P0，pa)小于pfc0)的情况下，第一设备增大第二发送功率，得到调整后的第二发送功率，例如调整后的第二发送功率P＝P0+ε0，ε0为功率调整的步长。
基于调整后的第二发送功率和第二功率分配参数确定第三信号。可选地，第三信号对应的第一性能指标和/或第二性能指标可以基于接收侧反馈的信息确定，与第一信号类似，本申请实施例中不再赘述。
在第三信号满足通信性能，且第三信号不满足感知性能的下限(即第三信号对应的感知性能指标pfradar(P，pa)＜pfr0)的情况下，第一设备调整第二功率分配参数，得到第一功率分配参数pa1；P表示调整后的第二发送功率，pa表示第二功率分配参数；或，
在第三信号满足通信性能，且第三信号不满足感知性能的上限(第三信号对应的感知性能指标pfradar(P，pa)≥pfr1)的情况下，第一设备减小调整后的第二发送功率，得到第一发送功率P1；第一功率分配参数为第二功率分配参数；pa表示第二功率分配参数。
基于减小后的第二发送功率(即第一发送功率P1)得到的感知性能指标满足感知性能，即pfr0≤pfradar(P1，pa1)≤pfr1。此时，通信性能指标也满足通信性能。
其中，P1＝P-a1×ε0，其中，a1为大于0的数，ε0为功率调整的步长。
可选地，ε0可以是预先配置的，或协议约定的。
可选地，ε0还可以根据信号和/或信道的测量结果、接收机解调性能等确定。
示例性地，第一性能为感知性能，第二性能为通信性能，在第二信号不满足感知性能(即第二信号对应的感知性能指标pfradar(P0，pa)小于pfr0)的情况下，第一设备增大第二发送功率，得到调整后的第二发送功率，例如调整后的第二发送功率P＝P0+ε0，ε0为功率调整的步长。
基于调整后的第二发送功率和第二功率分配参数确定第三信号。可选地，第三信号对应的第一性能指标和/或第二性能指标可以基于接收侧反馈的信息确定，与第一信号类似，本申请实施例中不再赘述。
在第三信号满足感知性能，且第三信号不满足通信性能的下限(即第三信号对应的通信性能指标pfcomm(P，pa)小于pfc0)的情况下，第一设备调整第二功率分配参数，得到第一功率分配参数；P表示调整后的第二发送功率，pa表示第二功率分配参数；或，
在第三信号满足感知性能性能需求，且第三信号不满足通信性能的上限(即第三信号对应的通信性能指标pfcomm(P，pa)≥pfc1)的情况下，第一设备减小调整后的第二发送功率，得到第一发送功率P1；第一功率分配参数为第二功率分配参数；pa表示第二功率分配参数。
基于减小后的第二发送功率(即第一发送功率P1)得到的通信性能指标满足通信性能，即pfc0≤pfcomm(P1，pa1)≤pfc1。此时，感知性能指标也满足感知性能。
其中，P1＝P-a1×ε0，其中，a1为大于0的数，ε0为功率调整的步长。
可选地，ε0可以是预先配置的，或协议约定的。
可选地，ε0还可以根据信号和/或信道的测量结果、接收机解调性能等确定。
可选地，在减小第二发送功率之后，若第一性能指标不满足第一性能，和/或，第二性能指标不满足第二性能，还可以调整第二功率分配参数，和/或增大第二发送功率。
进一步地，第一设备调整第二功率分配参数，得到第一功率分配参数之后，还可以包括：
在第四信号不满足第二性能的下限的情况下，第一设备对调整后的第二发送功率进行调整，得到第一发送功率；第四信号为基于调整后的第二发送功率和第一功率分配参数确定的。
基于调整后的第二发送功率和第一功率分配参数确定第四信号。可选地，第四信号对应的第一性能指标和/或第二性能指标可以基于接收侧反馈的信息确定，与第一信号类似，本申请实施例中不再赘述。
示例性地，第一性能为感知性能，第二性能为通信性能，在第四信号不满足通信性能的下限(即pfcomm(P，pa1)小于pfr0)的情况下，还可以对调整后的第二发送功率P进行调整，得到第一发送功率P1，此时感知性能指标满足感知性能，通信性能指标也满足通信性能。例如，P1＝P+ε1。
可选地，第一设备对调整后的第二发送功率进行调整，得到第一发送功率，包括：
第一设备获取功率调整步长；
第一设备基于功率调整步长和调整后的第二发送功率，得到第一发送功率。
具体地，第一设备获取功率调整步长ε1，并基于功率调整步长和调整后的第二发送功率，得到第一发送功率。
可选地，ε1可以是预先配置的，或协议约定的。
可选地，ε1还可以根据信号和/或信道的测量结果、接收机解调性能等确定。
可选地，上述实现方式中“调整第二分配功率参数，得到第一分配功率参数”，可以通过如下方式实现：
第一设备获取第二性能对应的目标功率分配参数；
第一设备基于目标功率分配参数和第二功率分配参数，确定功率分配的调整步长；
第一设备基于第二功率分配参数以及功率分配的调整步长，得到第一功率分配参 数。具体地，获取第二性能对应的目标功率分配参数，该目标功率分配参数可以是理论上第二性能对应的最优功率分配参数paL，假设第二性能为雷达感知性能，若pfradar(P，paL)≥pfr0，则根据paL计算功率分配的调整步长
调整第二功率分配参数，得到pal＝pa0+l×Δpa，l＝1，2，...，L，当pfradar(P，pal)≥pfr0时，说明第二性能指标满足第二性能，停止调整第二功率分配参数，得到第一功率分配参数pal。如果pfcomm(P，pal)≥pfc0，则说明第一性能指标也满足第一性能。
可选地，L可以是协议约定的，或发送侧自行设置，或预配置的。
上述实施方式中，获取初始的第二发送功率和第二功率分配参数，基于实际业务和场景的需求，通过调整总发送功率以及多天线间的功率分配，即选取合适的发送功率以及角度域的功率分配参数，兼顾通信性能和感知性能。
可选地，该方法的流程如图3所示，在单站ISAC的情况下，即雷达为自发自收的情况下，左侧的感知接收端与ISAC发送端为同一设备，无需执行左侧的流程。
可选地，在第一性能为通信性能的情况下，该方法还包括：
第一设备接收第二设备反馈的第一指示信息，基于第一指示信息确定第一信号是否满足第一性能；第一指示信息用于指示第一信号对应的第一性能指标；或，
第一设备接收第二设备反馈的第一指示信息，第一指示信息用于指示第一信号是否满足第一性能；或，
在第二性能为通信性能的情况下，该方法还包括：
第一设备接收第二设备反馈的第一指示信息，基于第一指示信息确定第一信号是否满足第二性能；第一指示信息用于指示第一信号对应的第二性能指标；或，
第一设备接收第二设备反馈的第一指示信息，第一指示信息用于指示第一信号是否满足第二性能。
可选地，第一设备包括雷达的发送端和接收端，或，第一设备仅包括雷达的发送端。
可选地，在第一设备仅包括雷达的发送端，且第一性能为感知性能的情况下，该方法还包括：
第一设备接收第二设备反馈的第二指示信息，基于第二指示信息确定第一信号是否满足第一性能；第一指示信息用于指示第一信号对应的第一性能指标；或，
第一设备接收第二设备反馈的第一指示信息，第二指示信息用于指示第一信号是否满足第一性能；或，
在第一设备仅包括雷达的发送端，且第二性能为感知性能的情况下，该方法还包括：
第一设备接收第二设备反馈的第二指示信息，基于第二指示信息确定第一信号是 否满足第二性能；第二指示信息用于指示第一信号对应的第二性能指标；或，
第一设备接收第二设备反馈的第二指示信息，第二指示信息用于指示第一信号是否满足第二性能。
可选地，ISAC系统中，存在三种工作状态，每种状态对接收侧反馈的需求也不同。
状态I：通信状态。
当处于通信状态时，仅需要反馈通信性能指标，可以按照现有协议中为通信功能服务的反馈方式进行反馈。
状态II：感知状态。
当处于感知状态时，并不关注通信性能指标，仅需要在发送侧和感知接收侧之间通过直接/间接链路反馈感知性能指标。
状态III：通信+感知状态。
当处于通信+感知状态时，通信性能指标和感知性能指标都需要反馈。
可选地，ISAC系统可以根据自身工作状态，按需触发不同的反馈，来降低反馈开销。例如，可以用一个1bit的消息显式指示给通信接收侧是否需要反馈通信性能指标，用一个1bit的消息显式指示给感知接收侧是否需要反馈感知性能指标。也可以用导频脉冲/导频序列进行隐式指示。
功率分配的调整是依据反馈信息进行的，反馈频次高时，功率分配调整也相应频繁，收敛到通感性能平衡的工作区域的速度快，但是反馈开销较大；反馈频次低时，功率分配收敛的速度慢，反馈开销较小。这里的通信反馈周期Tfc和感知反馈周期Tfr(即反馈频次)可以由发送侧根据信道变化状况，或雷达跟踪的目标相对速度等参数动态确定，也可以由协议预定义。Tfc和Tfr的数值可以相同也可以不同。Tfc和Tfr可由发送侧分别配置给通信接收侧和感知接收侧。
上述实施方式中，通过信令交互实现了接收端的信息反馈，进而可以基于反馈的信息对发送功率和/或功率分配参数进行调整，即选取合适的发送功率以及角度域的功率分配参数，兼顾通信性能和感知性能。
可选地，阈值pfc0、pfc1、pfr0、pfr1，接收侧的反馈周期通常由发送侧(通常为网络侧设备(例如基站))配置给通信接收侧(通常为终端)，可以通过广播信令主信息块(Master Information Block，MIB)，系统信息块(System Information Block，SIB)，媒体接入层控制单元(Media Access Control Control Element，MAC CE)，或者下行控制信息(Downlink Control Information，DCI)，专用(dedicated)无线资源控制(Radio Resource Control，RRC)等配置。可选地，通信接收侧可通过上行控制信息(Uplink Control Information，UCI)，导频或上行数据等反馈通信性能指标的信息。
在一实施例中，对于单站ISAC来说，假设初始的第二发送功率为P0，角度域的 第二功率分配参数为
在优先保证通信性能的情况下，角度域等功率分配，即
步骤1、若通信性能指标满足通信性能，且感知性能指标满足感知性能，则使用上述第二发送功率以及第二功率分配参数发送第一信号；
步骤2、若通信性能指标不满足通信性能，且调整第二功率分配参数无法满足通信性能，则增大第二发送功率，直至通信性能指标满足通信性能；
步骤3，若此时感知性能指标满足感知性能，则使用增大后的第二发送功率以及第二功率分配参数发送第一信号；或，
若此时感知性能指标大于感知性能地上限，则将增大后的第二发送功率进行减小，得到第一发送功率；此时感知性能指标满足感知性能，且通信性能指标满足通信性能，则使用第一发送功率以及第二功率分配参数发送第一信号；或，
若此时感知性能指标小于感知性能地下限，则计算理论最优功率分配参数paL；若此时感知性能指标依然小于感知性能地下限，则继续对增大后的第二发送功率进行增大，重复执行上述步骤3，直至感知性能指标满足感知性能，通信性能指标也满足通信性能；若此时感知性能指标满足感知性能，则基于理论最优功率分配参数paL，计算调整步长，并基于调整步长调整第二功率分配参数，直至感知性能指标满足感知性能，得到功率分配参数pal，若此时通信性能指标也满足通信性能，则使用增大后的第二发送功率以及功率分配参数pal发送第一信号。
在优先保证感知性能的情况下，与上述类似，此处不再赘述。
示例性的，对于单站ISAC系统，假设优先保证通信性能，发送功率以及功率分配参数需要优先考虑通信性能指标。
步骤1：
当pfcomm(P0，pa)＜pfc0时，未满足通信性能，且无法通过优化角度域的功率分配参数改善，此时需要调整全局的发送功率，即P＝P0+ε0，ε0为功率调整的步长。直到pfcomm(P，pa)≥pfc0时，进入STEP-2。
当pfcomm(P0，pa)≥pfc0时，满足通信性能，P＝P0，执行步骤2。
步骤2：
当pfcomm(P0，pa)≥pfc0时，满足通信性能，需要考虑雷达感知性能。
此时，当pfr0≤pfradar(P，pa)≤pfr1，满足通信性能，且满足雷达感知性能，使用当前的功率配置(P，pa)。
此时，当pfradar(P，pa)≥pfr1时，雷达感知的性能指标溢出，此时可能可以减少全局的发送功率，当存在P′＝P-a×ε0，a∈{0，N+}，且pfcomm(P，pa)≥pfc0时，使用功率配置(P′，pa)，否则依然使用当前的功率配置(P，pa)。
此时，当pfradar(P，pa)＜pfr0时，不满足雷达感知性能的下限，首先通过调整角 度域功率分配来提升雷达感知性能指标。计算最优化雷达感知性能的功率分配参数(例如根据公式(1)计算)，记作paL。如果pfradar(P，paL)≥pfr0，执行步骤3。
如果pfradar(P，paL)＜pfr0，设置P＝P+ε1，重复执行步骤2。
步骤3：
根据paL计算功率分配的调整步长
在L+1个回合内，更新功率分配参数，pal＝pa0+l×Δpa，l＝1，2，...，L。当pfradar(P，pal)≥pfr0时，停止更新功率分配参数。
发送侧通过通信接收侧反馈，获得通信性能指标是否满足通信性能的信息。该信息可以是pfcomm(P，pal)的具体数值，也可以是一个1比特的指示，表示pfcomm(P，pal)和pfc0的大小关系。如果pfcomm(P，pal)≥pfc0，则使用pal作为功率分配参数。如果pfcomm(P0，pal)＜pfc0，则pal不满足通信性能，设置pa＝pal，执行步骤1。
示例性的，对于多站ISAC系统，假设优先保证通信性能，发送功率以及功率分配参数需要优先考虑通信性能指标。多站ISAC系统的雷达感知接收侧不在发送侧，因此雷达感知性能的评估需要由雷达接收侧反馈给发送侧。
步骤1：
当pfcomm(P0，pa)＜pfc0时，不满足通信性能，且无法通过优化角度域功率分配改善，此时需要调整全局发送功率，即P＝P0+ε0，ε0为功率调整的步长。直到pfcomm(P，pa)≥pfc0时，执行步骤2。
当pfcomm(P0，pa)≥pfc0时，满足通信性能，P＝P0，执行步骤2。
步骤2：
当pfcomm(P0，pa)≥pfc0时，满足通信性能，需要考虑雷达感知性能。
发送侧通过感知接收侧反馈，获得感知性能指标是否满足感知性能的信息。如果是图4a和图4c的情形，则感知接收侧直接向感知发送侧发送雷达感知性能指标的信息，可以是pfradar的具体数值，也可以是一个1比特的指示，表示pfradar(P，pa)和pfc0的大小关系。如果是图4b的情形，感知接收侧可以：(1)将雷达感知性能指标的信息上报至感知功能网元，由感知功能网元发送感知控制/配置信息给感知发送侧，进行功率分配参数的调整。(2)将雷达感知测量量上报至感知功能网元，由感知功能网元计算出雷达感知性能指标，发送感知控制/配置信息给感知发送侧，进行功率分配参数的调整。
此时，当pfradar(P，pa)＜pfr0时，不满足雷达感知性能，首先通过调整角度域功率分配来提升雷达感知性能指标。计算最优化雷达感知性能的功率分配参数((例如根据公式(1)计算))，记作paL。如果pfradar(P，paL)≥pfr0，执行步骤3。
如果pfradar(P，paL)＜pfr0，设置P＝P+ε1，重复执行步骤2。
步骤3：
根据paL计算功率分配的调整步长
在L+1个回合内，更新功率分配参数，pal＝pa0+l×Δpa，l＝1，2，...，L。当pfradar(P，pal)≥pfr0时，停止更新功率分配参数。
发送侧通过通信接收侧反馈，获得通信性能指标是否满足通信性能的信息。该信息可以是pfcomm(P，pal)的具体数值，也可以是一个1比特的指示，表示pfcomm(P，pal)和pfc0的大小关系。如果pfcomm(P，pal)≥pfc0，则使用pal作为功率分配参数。如果pfcomm(P0，pal)＜pfc0，则pal不满足通信性能，设置pa＝pal，执行步骤1。
示例性的，对于单站ISAC系统，假设优先保证感知性能，发送功率以及功率分配参数需要优先考虑感知性能指标。
步骤1：
当pfradar(P0，pa)＜pfr0时，不满足感知性能，且无法通过优化角度域功率分配改善，此时需要调整全局发送功率，即P＝P0+ε0，ε0为功率调整的步长。直到pfradar(P，pa)≥pfr0时，执行步骤2。
当pfradar(P0，pa)≥pfr0时，满足感知性能，P＝P0，执行步骤2。
步骤2：
当pfradar(P，pa)≥pfr0时，满足感知性能，需要考虑通信性能。
此时，当pfc0≤pfcomm(P，pa)≤pfc1，即同时满足通信性能和雷达感知性能，使用当前的功率配置(P，pa)。
此时，当pfcomm(P，pa)≥pfc1时，通信性能指标溢出，此时可能可以减少全局发送功率，当存在P′＝P-a×ε0，a∈{0，N+}，且pfradar(P′，pa)≥pfr0时，使用功率配置(P′，pa)，否则依然使用当前的功率配置(P，pa)。
此时，当pfcomm(P，pa)＜pfc0时，不满足通信性能，首先通过调整角度域的功率分配参数来提升通信性能指标。计算最优化通信性能的功率分配参数(例如等功率分配或注水算法，视是否有预编码)，记作paL。如果pfcomm(P，paL)≥pfc0，执行步骤3。
如果pfcomm(P，paL)＜pfc0，设置P＝P+ε1，重复执行步骤2。
步骤3：
根据paL计算功率分配的调整步长
在L+1个回合内，更新功率分配参数，pal＝pa0+l×Δpa，l＝1，2，...，L。当pfcomm(P，pal)≥pfc0时，停止更新功率分配参数。
如果pfradar(P，pal)≥pfr0，则使用pal作为功率分配参数。如果pfradar(P0，pal)＜pfr0，则pal不满足通信性能，设置pa＝pal，执行步骤1。
示例性的，对于多站ISAC系统，假设优先保证感知性能，发送功率以及功率分配参数需要优先考虑感知性能指标。多站ISAC系统的雷达感知接收侧不在发送侧，因此雷达感知性能的评估需要由雷达接收侧反馈给发送侧。
发送侧通过感知接收侧反馈，获得感知性能指标是否满足感知性能的信息。如果 是图4a和图4c的情形，则感知接收侧直接向感知发送侧发送雷达感知性能指标的信息，可以是pfradar的具体数值，也可以是一个1比特的指示，表示pfradar(P，pa)和pfc0的大小关系。如果是图4b的情形，感知接收侧可以：(1)将雷达感知性能指标的信息上报至感知功能网元，由感知功能网元发送感知控制/配置信息给感知发送侧，进行功率分配参数的调整。(2)将雷达感知测量量上报至感知功能网元，由感知功能网元计算出雷达感知性能指标，发送感知控制/配置信息给感知发送侧，进行功率分配参数的调整。
步骤1：
当pfradar(P0，pa)＜pfr0时，不满足感知性能，且无法通过优化角度域功率分配改善，此时需要调整全局发送功率，即P＝P0+ε0，ε0为功率调整的步长。直到pfradar(P，pa)≥pfr0时，执行步骤2。
当pfradar(P0，pa)≥pfr0时，满足感知性能，P＝P0，执行步骤2。
步骤2：
当pfradar(P，pa)≥pfr0时，满足感知性能，需要考虑通信的性能。
此时，当pfc0≤pfcomm(P，pa)≤pfc1，即同时满足通信性能和雷达感知性能，使用当前的功率配置(P，pa)。
此时，当pfcomm(P，pa)≥pfc1时，通信性能指标溢出，此时可能可以减少全局发送功率，当存在P′＝P-a×ε0，a∈{0，N+}，且pfradar(P，pa)≥pfr0时，使用功率配置(P′，pa)，否则依然使用当前的功率配置(P，pa)。
此时，当pfcomm(P，pa)＜pfc0时，不满足通信性能，首先通过调整角度域功率分配来提升通信性能指标。计算最优化通信性能的功率分配参数(例如等功率分配或注水算法，视是否有预编码)，记作paL。如果pfcomm(P，paL)≥pfc0，执行步骤3。
如果pfcomm(P，paL)＜pfc0，设置P＝P+ε1，重复执行步骤2。
步骤3：
根据paL计算功率分配的调整步长
在L+1个回合内，更新功率分配参数，pal＝pa0+l×Δpa，l＝1，2，...，L。当pfcomm(P，pal)≥pfc0时，停止更新功率分配参数。
发送侧通过感知接收侧反馈，获得感知性能指标是否满足感知性能的信息。该信息可以是pfradar(P，pal)的具体数值，也可以是一个1比特的指示，表示pfradar(P，pal)和pfr0的大小关系。如果pfradar(P，pal)≥pfr0，则使用pal作为功率分配参数。如果pfradar(P0，pal)＜pfr0，则pal不满足通信性能，设置pa＝pal，执行步骤1。
图5是本申请实施例提供的多天线ISAC的功率分配方法的流程示意图之二。如图5所示，本实施例的方法包括：
步骤201、第二设备接收第一设备发送的第一信号，第一信号为基于第一发送功率和角度域的第一功率分配参数发送的，且满足第一性能和第二性。
可选地，所述第一性能为通信性能，所述第二性能为感知性能；或，
所述第一性能为感知性能，所述第二性能为通信性能。
可选地，在所述第一性能为通信性能的情况下，所述方法还包括：
所述第二设备向所述第一设备反馈第一指示信息；
所述第二设备向所述第一设备反馈第一指示信息；所述第一指示信息用于指示所述第一信号对应的第一性能指标；或，所述第一指示信息用于指示所述第一信号是否满足所述第一性能；或，
在所述第二性能为通信性能的情况下，所述方法还包括：
所述第二设备向所述第一设备反馈第一指示信息；所述第一指示信息用于指示所述第一信号对应的第一性能指标；或，所述第一指示信息用于指示所述第一信号是否满足所述第一性能。
可选地，所述第一设备包括雷达的发送端和接收端，或，所述第一设备仅包括雷达的发送端。
可选地，在所述第一设备仅包括雷达的发送端，且所述第一性能为感知性能的情况下，所述方法还包括：
所述第二设备向所述第一设备反馈第二指示信息；所述第二指示信息用于指示所述第一信号对应的第二性能指标；或，所述第二指示信息用于指示所述第一信号是否满足所述第二性能；或，
在所述第一设备仅包括雷达的发送端，且所述第二性能为感知性能的情况下，所述方法还包括：
所述第二设备向所述第一设备反馈第二指示信息；所述第二指示信息用于指示所述第一信号对应的第二性能指标；或，所述第二指示信息用于指示所述第一信号是否满足所述第二性能；。
本实施例的方法，其具体实现过程与技术效果与第一设备侧方法实施例中类似，具体可以参见第一设备侧方法实施例中的详细介绍，此处不再赘述。
本申请实施例提供的多天线ISAC的功率分配方法，执行主体可以为多天线ISAC的功率分配装置。本申请实施例中以多天线ISAC的功率分配装置执行多天线ISAC的功率分配方法为例，说明本申请实施例提供的多天线ISAC的功率分配装置。
图6是本申请实施例提供的多天线ISAC的功率分配装置的结构示意图之一。如图6所示，本实施例提供的多天线ISAC的功率分配装置，包括：
获取模块210，用于获取第一发送功率以及角度域的第一功率分配参数；
发送模块220，用于基于所述第一发送功率和所述第一功率分配参数，向第二设备发送满足第一性能和第二性能的第一信号。
可选地，获取模块210，具体用于：
获取第二发送功率以及角度域的第二功率分配参数；
在第二信号满足第一性能，且所述第二信号不满足第二性能的上限的情况下，所述第一设备减小所述第二发送功率，得到所述第一发送功率；所述第一功率分配参数为所述第二功率分配参数；
其中，所述第二信号为基于所述第二发送功率和所述第二功率分配参数确定的。
可选地，获取模块210，具体用于：
获取第二发送功率以及角度域的第二功率分配参数；
在所述第二信号满足第一性能，且所述第二信号不满足第二性能的下限的情况下，所述第一设备调整所述第二功率分配参数，得到所述第一功率分配参数；所述第一发送功率为所述第二发送功率；
其中，所述第二信号为基于所述第二发送功率和所述第二功率分配参数确定的。
可选地，获取模块210，具体用于：
获取第二发送功率以及角度域的第二功率分配参数；
在所述第二信号不满足第一性能的情况下，所述第一设备增大所述第二发送功率，得到调整后的第二发送功率；所述第二信号为基于所述第二发送功率和所述第二功率分配参数确定的；
在所述第三信号满足所述第一性能，且所述第三信号不满足第二性能的下限的情况下，所述第一设备调整所述第二功率分配参数，得到所述第一功率分配参数；所述第三信号为基于所述调整后的第二发送功率和所述第二功率分配参数确定的；
在所述第三信号满足所述第一性能，且所述第三信号不满足第二性能的上限的情况下，所述第一设备减小所述调整后的第二发送功率，得到所述第一发送功率；所述第一功率分配参数为所述第二功率分配参数。
可选地，所述装置还包括：
处理模块用于：在第四信号不满足所述第二性能的下限的情况下，所述第一设备对所述调整后的第二发送功率进行调整，得到所述第一发送功率；所述第四信号为基于所述调整后的第二发送功率和所述第一功率分配参数确定的。
可选地，处理模块具体用于：
获取功率调整步长；
基于所述功率调整步长和所述调整后的第二发送功率，得到所述第一发送功率。
可选地，处理模块具体用于：
获取所述第二性能对应的目标功率分配参数；
基于所述目标功率分配参数和所述第二功率分配参数，确定功率分配的调整步长；
基于所述第二功率分配参数以及所述功率分配的调整步长，得到所述第一功率分配参数。
可选地，所述第一性能为通信性能，所述第二性能为感知性能；或，
所述第一性能为感知性能，所述第二性能为通信性能。
可选地，所述装置还包括：
接收模块，用于在所述第一性能为通信性能的情况下，接收第二设备反馈的第一指示信息，基于所述第一指示信息确定所述第一信号是否满足所述第一性能；所述第一指示信息用于指示所述第一信号对应的第一性能指标；或，
接收第二设备反馈的第一指示信息，所述第一指示信息用于指示所述第一信号是否满足所述第一性能；或，
在所述第二性能为通信性能的情况下，接收第二设备反馈的第一指示信息，基于所述第一指示信息确定所述第一信号是否满足所述第二性能；所述第一指示信息用于指示所述第一信号对应的第二性能指标；或，
接收第二设备反馈的第一指示信息，所述第一指示信息用于指示所述第一信号是否满足所述第二性能。
可选地，所述第一设备包括雷达的发送端和接收端，或，所述第一设备仅包括雷达的发送端。
可选地，接收模块，还用于：
在所述第一设备仅包括雷达的发送端，且所述第一性能为感知性能的情况下，接收第二设备反馈的第二指示信息，基于所述第二指示信息确定所述第一信号是否满足所述第一性能；所述第二指示信息用于指示所述第一信号对应的第一性能指标；或，
接收第二设备反馈的第二指示信息，所述第二指示信息用于指示所述第一信号是否满足所述第一性能；或，
在所述第一设备仅包括雷达的发送端，且所述第二性能为感知性能的情况下，接收第二设备反馈的第二指示信息，基于所述第二指示信息确定所述第一信号是否满足所述第二性能；所述第二指示信息用于指示所述第一信号对应的第二性能指标；或，
接收第二设备反馈的第二指示信息，所述第二指示信息用于指示所述第一信号是否满足所述第二性能。
本实施例的装置，可以用于执行前述第一设备侧方法实施例中任一实施例的方法，其具体实现过程与技术效果与第一设备侧方法实施例中类似，具体可以参见第一设备侧方法实施例中的详细介绍，此处不再赘述。
图7是本申请实施例提供的多天线ISAC的功率分配装置的结构示意图之二。如图7所示，本实施例提供的多天线ISAC的功率分配装置，包括：
接收模块310，用于接收第一设备发送的第一信号，所述第一信号为基于第一发送功率和角度域的第一功率分配参数发送的，且满足第一性能和第二性能。
可选地，所述第一性能为通信性能，所述第二性能为感知性能；或，
所述第一性能为感知性能，所述第二性能为通信性能。
可选地，所述装置还包括：
发送模块320，用于在所述第一性能为通信性能的情况下，向所述第一设备反馈第一指示信息；所述第一指示信息用于指示所述第一信号对应的第一性能指标；或，所述第一指示信息用于指示所述第一信号是否满足所述第一性能；
；或，
在所述第二性能为通信性能的情况下，向所述第一设备反馈第一指示信息；所述第一指示信息用于指示所述第一信号对应的第一性能指标；或，所述第一指示信息用于指示所述第一信号是否满足所述第一性能。
可选地，所述第一设备包括雷达的发送端和接收端，或，所述第一设备仅包括雷达的发送端。
可选地，发送模块320，用于在所述第一设备仅包括雷达的发送端，且所述第一性能为感知性能的情况下，向所述第一设备反馈第二指示信息；所述第二指示信息用于指示所述第一信号对应的第二性能指标；或，所述第二指示信息用于指示所述第一信号是否满足所述第二性能；或，
在所述第一设备仅包括雷达的发送端，且所述第二性能为感知性能的情况下，向所述第一设备反馈第二指示信息；所述第二指示信息用于指示所述第一信号对应的第二性能指标；或，所述第二指示信息用于指示所述第一信号是否满足所述第二性能。
本实施例的装置，可以用于执行前述第二设备侧方法实施例中任一实施例的方法，其具体实现过程与技术效果与第二设备侧方法实施例中类似，具体可以参见第二设备侧方法实施例中的详细介绍，此处不再赘述。
本申请实施例中的多天线ISAC的功率分配装置可以是电子设备，例如具有操作系统的电子设备，也可以是电子设备中的部件，例如集成电路或芯片。该电子设备可以是终端，也可以为除终端之外的其他设备。示例性的，终端可以包括但不限于上述所列举的终端11的类型，其他设备可以为服务器、网络附属存储器(Network Attached Storage，NAS)等，本申请实施例不作具体限定。
本申请实施例提供的多天线ISAC的功率分配装置能够实现图2至图5的方法实施例实现的各个过程，并达到相同的技术效果，为避免重复，这里不再赘述。
可选的，如图8所示，本申请实施例还提供一种通信设备700，包括处理器701和存储器702，存储器702上存储有可在所述处理器701上运行的程序或指令，例如，该通信设备700为终端时，该程序或指令被处理器701执行时实现上述多天线ISAC的功率分配方法实施例的各个步骤，且能达到相同的技术效果。该通信设备700为网络侧设备时，该程序或指令被处理器701执行时实现上述多天线ISAC的功率分配方法实施例的各个步骤，且能达到相同的技术效果，为避免重复，这里不再赘述。
本申请实施例还提供一种第一设备，包括处理器和通信接口，所述处理器用于获取第一发送功率以及角度域的第一功率分配参数；所述通信接口用于基于所述第一发送功率和所述第一功率分配参数，向第二设备发送满足第一性能和第二性能的第一信 号。该第一设备实施例与上述第一设备侧方法实施例对应，上述方法实施例的各个实施过程和实现方式均可适用于该第一设备实施例中，且能达到相同的技术效果。
具体地，本申请实施例还提供了一种网络侧设备。如图9所示，该网络侧设备800包括：天线71、射频装置72、基带装置73、处理器75和存储器75。天线71与射频装置72连接。在上行方向上，射频装置72通过天线71接收信息，将接收的信息发送给基带装置73进行处理。在下行方向上，基带装置73对要发送的信息进行处理，并发送给射频装置72，射频装置72对收到的信息进行处理后经过天线71发送出去。
上述频带处理装置可以位于基带装置73中，以上实施例中网络侧设备执行的方法可以在基带装置73中实现，该基带装置73包括基带处理器75和存储器75。
基带装置73例如可以包括至少一个基带板，该基带板上设置有多个芯片，如图9所示，其中一个芯片例如为基带处理器75，通过总线接口与存储器75连接，以调用存储器75中的程序，执行以上方法实施例中所示的网络设备操作。
该基带装置73网络侧设备还可以包括网络接口76，用于与射频装置72交互信息，该接口例如为通用公共无线接口(common public radio interface，简称CPRI)。
具体地，本申请实施例的网络侧设备800还包括：存储在存储器75上并可在处理器75上运行的指令或程序，处理器75调用存储器75中的指令或程序执行图6所示各模块执行的方法，并达到相同的技术效果，为避免重复，故不在此赘述。
本申请实施例还提供一种第二设备，包括处理器和通信接口，所述通信接口用于接收第一设备发送的第一信号，所述第一信号为基于第一发送功率和角度域的第一功率分配参数发送的，且满足第一性能和第二性能。该第二设备实施例与上述第二设备侧方法实施例对应，上述方法实施例的各个实施过程和实现方式均可适用于该第二设备实施例中，且能达到相同的技术效果。
具体地，图10为实现本申请实施例的一种终端的硬件结构示意图。
该终端1000包括但不限于：射频单元1001、网络模块1002、音频输出单元1003、输入单元1004、传感器1005、显示单元1006、用户输入单元1007、接口单元1008、存储器1009、以及处理器1010等中的至少部分部件。
本领域技术人员可以理解，终端1000还可以包括给各个部件供电的电源(比如电池)，电源可以通过电源管理系统与处理器1010逻辑相连，从而通过电源管理系统实现管理充电、放电、以及功耗管理等功能。图10中示出的终端结构并不构成对终端的限定，终端可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置，在此不再赘述。
应理解的是，本申请实施例中，输入单元1004可以包括图形处理单元(Graphics Processing Unit，GPU)10041和麦克风10042，图形处理器10041对在视频捕获模式或图像捕获模式中由图像捕获装置(如摄像头)获得的静态图片或视频的图像数据进行处理。显示单元1006可包括显示面板10061，可以采用液晶显示器、有机发光二极 管等形式来配置显示面板10061。用户输入单元1007包括触控面板10071以及其它输入设备10072中的至少一种。触控面板10071，也称为触摸屏。触控面板10071可包括触摸检测装置和触摸控制器两个部分。其它输入设备10072可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆，在此不再赘述。
本申请实施例中，射频单元1001将接收来自网络侧设备的下行数据接收后，可以传输给处理器1010进行处理；另外，射频单元1001可以将上行的数据发送给向网络侧设备发送上行数据。通常，射频单元1001包括但不限于天线、至少一个放大器、收发信机、耦合器、低噪声放大器、双工器等。
存储器1009可用于存储软件程序或指令以及各种数据。存储器1009可主要包括存储程序或指令的第一存储区和存储数据的第二存储区，其中，第一存储程序或指令区可存储操作系统、至少一个功能所需的应用程序或指令(比如声音播放功能、图像播放功能等)等。此外，存储器1009可以包括易失性存储器或非易失性存储器，或者，存储器1009可以包括易失性和非易失性存储器两者。包括高速随机存取存储器，还可以包括非易失性存储器，其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDRSDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synch link DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DRRAM)。本申请实施例中的存储器1009包括但不限于这些和任意其它适合类型的存储器例如至少一个磁盘存储器件、闪存器件、或其它非易失性固态存储器件。
处理器1010可包括一个或多个处理单元；可选的，处理器1010可集成应用处理器和调制解调处理器，其中，应用处理器主要处理涉及操作系统、用户界面和应用程序或指令等的操作，调制解调处理器主要处理无线通信信号，如基带处理器。可以理解的是，上述调制解调处理器也可以不集成到处理器1010中。
其中，射频单元1001，用于接收第一设备发送的第一信号，所述第一信号为基于第一发送功率和角度域的第一功率分配参数发送的，且满足第一性能和第二性能。
可选地，所述第一性能为通信性能，所述第二性能为感知性能；或，
所述第一性能为感知性能，所述第二性能为通信性能。
可选地，所述射频单元1001，还用于：
在所述第一性能为通信性能的情况下，向所述第一设备反馈第一指示信息；所述 第一指示信息用于指示所述第一信号对应的第一性能指标；或，所述第一指示信息用于指示所述第一信号是否满足所述第一性能；
或，
在所述第二性能为通信性能的情况下，向所述第一设备反馈第一指示信息；所述第一指示信息用于指示所述第一信号对应的第一性能指标；或，所述第一指示信息用于指示所述第一信号是否满足所述第一性能。
可选地，所述第一设备包括雷达的发送端和接收端，或，所述第一设备仅包括雷达的发送端。
可选地，所述射频单元1001，还用于：
在所述第一设备仅包括雷达的发送端，且所述第一性能为感知性能的情况下，向所述第一设备反馈第二指示信息；所述第二指示信息用于指示所述第一信号对应的第二性能指标；或，所述第二指示信息用于指示所述第一信号是否满足所述第二性能；或，
在所述第一设备仅包括雷达的发送端，且所述第二性能为感知性能的情况下，向所述第一设备反馈第二指示信息；所述第二指示信息用于指示所述第一信号对应的第二性能指标；或，所述第二指示信息用于指示所述第一信号是否满足所述第二性能。
本申请实施例还提供一种可读存储介质，所述可读存储介质上存储有程序或指令，该程序或指令被处理器执行时实现上述多天线ISAC的功率分配方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
其中，所述处理器为上述实施例中所述的终端中的处理器。所述可读存储介质，包括计算机可读存储介质，如计算机只读存储器ROM、随机存取存储器RAM、磁碟或者光盘等。
本申请实施例另提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现上述多天线ISAC的功率分配方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
应理解，本申请实施例提到的芯片还可以称为系统级芯片，系统芯片，芯片系统或片上系统芯片等。
本申请实施例另提供了一种计算机程序/程序产品，所述计算机程序/程序产品被存储在存储介质中，所述计算机程序/程序产品被至少一个处理器执行以实现上述多天线ISAC的功率分配方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
本申请实施例还提供了一种通信系统，包括：第一设备及第二设备，所述第一设备可用于执行如上所述的多天线ISAC的功率分配方法的步骤，所述第二设备可用于执行如上所述的多天线ISAC的功率分配方法的步骤。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个......”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。此外，需要指出的是，本申请实施方式中的方法和装置的范围不限按示出或讨论的顺序来执行功能，还可包括根据所涉及的功能按基本同时的方式或按相反的顺序来执行功能，例如，可以按不同于所描述的次序来执行所描述的方法，并且还可以添加、省去、或组合各种步骤。另外，参照某些示例所描述的特征可在其他示例中被组合。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分可以以计算机软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端(可以是手机，计算机，服务器，空调器，或者网络设备等)执行本申请各个实施例所述的方法。
上面结合附图对本申请的实施例进行了描述，但是本申请并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本申请的启示下，在不脱离本申请宗旨和权利要求所保护的范围情况下，还可做出很多形式，均属于本申请的保护之内。

Claims (21)

  1. 一种多天线通感一体化系统ISAC的功率分配方法，包括：
    第一设备获取第一发送功率以及角度域的第一功率分配参数；
    所述第一设备基于所述第一发送功率和所述第一功率分配参数，向第二设备发送满足第一性能和第二性能的第一信号。
  2. 根据权利要求1所述的多天线ISAC的功率分配方法，其中，所述第一设备获取第一发送功率以及角度域的第一功率分配参数，包括：
    获取第二发送功率以及角度域的第二功率分配参数；
    在第二信号满足第一性能，且所述第二信号不满足第二性能的上限的情况下，所述第一设备减小所述第二发送功率，得到所述第一发送功率；所述第一功率分配参数为所述第二功率分配参数；
    其中，所述第二信号为基于所述第二发送功率和所述第二功率分配参数确定的。
  3. 根据权利要求1所述的多天线ISAC的功率分配方法，其中，所述第一设备获取第一发送功率以及角度域的第一功率分配参数，包括：
    获取第二发送功率以及角度域的第二功率分配参数；
    在第二信号满足第一性能，且所述第二信号不满足第二性能的下限的情况下，所述第一设备调整所述第二功率分配参数，得到所述第一功率分配参数；所述第一发送功率为所述第二发送功率；
    其中，所述第二信号为基于所述第二发送功率和所述第二功率分配参数确定的。
  4. 根据权利要求1所述的多天线ISAC的功率分配方法，其中，所述第一设备获取第一发送功率以及角度域的第一功率分配参数，包括：
    获取第二发送功率以及角度域的第二功率分配参数；
    在第二信号不满足第一性能的情况下，所述第一设备增大所述第二发送功率，得到调整后的第二发送功率；所述第二信号为基于所述第二发送功率和所述第二功率分配参数确定的；
    在第三信号满足所述第一性能，且所述第三信号不满足第二性能的下限的情况下，所述第一设备调整所述第二功率分配参数，得到所述第一功率分配参数；所述第三信号为基于所述调整后的第二发送功率和所述第二功率分配参数确定的；
    在所述第三信号满足所述第一性能，且所述第三信号不满足第二性能的上限的情况下，所述第一设备减小所述调整后的第二发送功率，得到所述第一发送功率；所述第一功率分配参数为所述第二功率分配参数。
  5. 根据权利要求4所述的多天线ISAC的功率分配方法，其中，所述第一设备调整所述第二功率分配参数，得到所述第一功率分配参数之后，还包括：
    在第四信号不满足所述第二性能的下限的情况下，所述第一设备对所述调整后的 第二发送功率进行调整，得到所述第一发送功率；所述第四信号为基于所述调整后的第二发送功率和所述第一功率分配参数确定的。
  6. 根据权利要求5所述的多天线ISAC的功率分配方法，其中，所述第一设备对所述调整后的第二发送功率进行调整，得到所述第一发送功率，包括：
    所述第一设备获取功率调整步长；
    所述第一设备基于所述功率调整步长和所述调整后的第二发送功率，得到所述第一发送功率。
  7. 根据权利要求3或4所述的多天线ISAC的功率分配方法，其中，所述第一设备调整所述第二功率分配参数，得到所述第一功率分配参数，包括：
    所述第一设备获取所述第二性能对应的目标功率分配参数；
    所述第一设备基于所述目标功率分配参数和所述第二功率分配参数，确定功率分配的调整步长；
    所述第一设备基于所述第二功率分配参数以及所述功率分配的调整步长，得到所述第一功率分配参数。
  8. 根据权利要求1-6任一项所述的多天线ISAC的功率分配方法，其中，所述第一性能为通信性能，所述第二性能为感知性能；或，
    所述第一性能为感知性能，所述第二性能为通信性能。
  9. 根据权利要求8所述的多天线ISAC的功率分配方法，其中，在所述第一性能为通信性能的情况下，所述方法还包括：
    所述第一设备接收第二设备反馈的第一指示信息，基于所述第一指示信息确定所述第一信号是否满足所述第一性能；所述第一指示信息用于指示所述第一信号对应的第一性能指标；或，
    所述第一设备接收第二设备反馈的第一指示信息，所述第一指示信息用于指示所述第一信号是否满足所述第一性能；或，
    在所述第二性能为通信性能的情况下，所述方法还包括：
    所述第一设备接收第二设备反馈的第一指示信息，基于所述第一指示信息确定所述第一信号是否满足所述第二性能；所述第一指示信息用于指示所述第一信号对应的第二性能指标；或，
    所述第一设备接收第二设备反馈的第一指示信息，所述第一指示信息用于指示所述第一信号是否满足所述第二性能。
  10. 根据权利要求1-6任一项所述的多天线ISAC的功率分配方法，其中，
    所述第一设备包括雷达的发送端和接收端，或，所述第一设备仅包括雷达的发送端。
  11. 根据权利要求10所述的多天线ISAC的功率分配方法，其中，在所述第一设备仅包括雷达的发送端，且所述第一性能为感知性能的情况下，所述方法还包括：
    所述第一设备接收第二设备反馈的第二指示信息，基于所述第二指示信息确定所述第一信号是否满足所述第一性能；所述第二指示信息用于指示所述第一信号对应的第一性能指标；或，
    所述第一设备接收第二设备反馈的第二指示信息，所述第二指示信息用于指示所述第一信号是否满足所述第一性能；或，
    在所述第一设备仅包括雷达的发送端，且所述第二性能为感知性能的情况下，所述方法还包括：
    所述第一设备接收第二设备反馈的第二指示信息，基于所述第二指示信息确定所述第一信号是否满足所述第二性能；所述第二指示信息用于指示所述第一信号对应的第二性能指标；或，
    所述第一设备接收第二设备反馈的第二指示信息，所述第二指示信息用于指示所述第一信号是否满足所述第二性能。
  12. 一种多天线ISAC的功率分配方法，包括：
    第二设备接收第一设备发送的第一信号，所述第一信号为基于第一发送功率和角度域的第一功率分配参数发送的，且满足第一性能和第二性能。
  13. 根据权利要求12所述的多天线ISAC的功率分配方法，其中，所述第一性能为通信性能，所述第二性能为感知性能；或，
    所述第一性能为感知性能，所述第二性能为通信性能。
  14. 根据权利要求13所述的多天线ISAC的功率分配方法，其中，在所述第一性能为通信性能的情况下，所述方法还包括：
    所述第二设备向所述第一设备反馈第一指示信息；所述第一指示信息用于指示所述第一信号对应的第一性能指标；或，所述第一指示信息用于指示所述第一信号是否满足所述第一性能；
    或，
    在所述第二性能为通信性能的情况下，所述方法还包括：
    所述第二设备向所述第一设备反馈第一指示信息；所述第一指示信息用于指示所述第一信号对应的第一性能指标；或，所述第一指示信息用于指示所述第一信号是否满足所述第一性能。
  15. 根据权利要求12-14任一项所述的多天线ISAC的功率分配方法，其中，
    所述第一设备包括雷达的发送端和接收端，或，所述第一设备仅包括雷达的发送端。
  16. 根据权利要求15所述的多天线ISAC的功率分配方法，其中，在所述第一设备仅包括雷达的发送端，且所述第一性能为感知性能的情况下，所述方法还包括：
    所述第二设备向所述第一设备反馈第二指示信息；所述第二指示信息用于指示所述第一信号对应的第二性能指标；或，所述第二指示信息用于指示所述第一信号是否 满足所述第二性能；或，
    在所述第一设备仅包括雷达的发送端，且所述第二性能为感知性能的情况下，所述方法还包括：
    所述第二设备向所述第一设备反馈第二指示信息；所述第二指示信息用于指示所述第一信号对应的第二性能指标；或，所述第二指示信息用于指示所述第一信号是否满足所述第二性能。
  17. 一种多天线ISAC的功率分配装置，包括：
    获取模块，用于获取第一发送功率以及角度域的第一功率分配参数；
    发送模块，用于基于所述第一发送功率和所述第一功率分配参数，向第二设备发送满足第一性能和第二性能的第一信号。
  18. 一种多天线ISAC的功率分配装置，包括：
    接收模块，用于接收第一设备发送的第一信号，所述第一信号为基于第一发送功率和角度域的第一功率分配参数发送的，且满足第一性能和第二性能。
  19. 一种第一设备，包括处理器和存储器，所述存储器存储可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如权利要求1至11任一项所述的多天线ISAC的功率分配方法的步骤。
  20. 一种第二设备，包括处理器和存储器，所述存储器存储可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如权利要求12至16任一项所述的多天线ISAC的功率分配方法的步骤。
  21. 一种可读存储介质，所述可读存储介质上存储程序或指令，所述程序或指令被处理器执行时实现如权利要求1-11任一项所述的多天线ISAC的功率分配方法，或者实现如权利要求12至16任一项所述的多天线ISAC的功率分配方法的步骤。
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