Power distribution method and device for ISAC

Abstract

The invention discloses a power distribution method and device of an ISAC, and belongs to the technical field of communication, and the power distribution method of the ISAC in the embodiment of the invention comprises the steps that a first device obtains first sending power and a first power distribution parameter; the first device sends a first signal to a second device based on the first sending power and the first power allocation parameter; wherein the first power distribution parameter is used for distributing the sending power of the signal meeting the requirements of the first performance and the second performance or the requirement of the third performance; the first performance, the second performance and the third performance correspond to signals with different functions.

Description

Technical Field

[0001] The present application belongs to the field of communication technology, and specifically relates to a power allocation method and device for an ISAC. Background Art

[0002] Future communication devices will integrate the dual functions of communication and perception through a protocol stack based on Integrated Sensing and Communication (ISAC) technology, and realize hardware sharing, spectrum sharing, and protocol intercommunication between communication and perception signals, thereby realizing the integrated design of communication and perception functions. The core feature of future ISAC devices is the realization of waveform multiplexing between communication and perception signals. Information transmission and target detection are carried out in the spectrum specified by the protocol through the waveform defined by the protocol. Furthermore, through a shared protocol stack, the channel and spatial information obtained by the communication system and the perception system can be interoperable, thereby realizing mutual assistance between communication and perception and further optimizing the overall performance.

[0003] The biggest challenge facing ISAC technology is the problem of coordinated work between 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 optimal lower bound of the estimated variance of the target parameters (distance, speed, Doppler, etc.), that is, the Cramér-Rao bound of the fuzzy function. The different emphasis of the above two functions makes it difficult to optimize the performance of communication and perception at the same time in the design of the ISAC system. Therefore, for those skilled in the art, how to allocate power so as to meet the communication and perception performance is a technical problem that needs to be solved urgently. Summary of the invention

[0004] The embodiments of the present application provide an ISAC power allocation method and device, which can solve the problem of how to allocate power to meet communication and perception performance.

[0005] In a first aspect, a power allocation method of an ISAC is provided, comprising:

[0006] The first device obtains a first transmission power and a first power allocation parameter;

[0007] The first device sends a first signal to the second device based on the first transmission power and the first power allocation parameter; wherein the first power allocation parameter is used to allocate the transmission power of a signal that meets the requirements of the first performance and the second performance or meets the requirements of the third performance; the first performance, the second performance, and the third performance correspond to signals with different functions.

[0008] In a second aspect, a power allocation method of an ISAC is provided, comprising:

[0009] The second device receives a first signal sent by the first device, where the first signal is sent based on a first transmission power and a first power allocation parameter, wherein the first power allocation parameter is used to allocate transmission power of a signal that meets requirements of first performance and second performance or meets requirements of third performance; the first performance, the second performance, and the third performance correspond to signals with different functions.

[0010] In a third aspect, a power distribution device of an ISAC is provided, comprising:

[0011] An acquisition module, used to acquire a first transmission power and a first power allocation parameter;

[0012] A sending module, used to send a first signal to a second device based on the first sending power and the first power allocation parameter; wherein the first power allocation parameter is used to allocate the sending power of a signal that meets the requirements of a first performance and a second performance or meets the requirements of a third performance; the first performance, the second performance, and the third performance correspond to signals with different functions.

[0013] In a fourth aspect, a power distribution device of an ISAC is provided, comprising:

[0014] A receiving module is used to receive a first signal sent by a first device, wherein the first signal is sent based on a first transmission power and a first power allocation parameter, wherein the first power allocation parameter is used to allocate the transmission power of a signal that meets the requirements of a first performance and a second performance or meets the requirements of a third performance; the first performance, the second performance, and the third performance correspond to signals with different functions.

[0015] In a fifth aspect, a first device is provided, comprising a processor and a memory, wherein the memory stores a program or instruction that can be executed on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0016] In a sixth aspect, a first device is provided, comprising a processor and a communication interface, wherein the processor is used to obtain a first transmission power and a first power allocation parameter; the communication interface is used to send a first signal to a second device based on the first transmission power and the first power allocation parameter; wherein the first power allocation parameter is used to allocate the transmission power of a signal that meets the requirements of a first performance and a second performance or meets the requirements of a third performance; and the first performance, the second performance, and the third performance correspond to signals with different functions.

[0017] In a seventh aspect, a second device is provided, comprising a processor and a memory, wherein the memory stores a program or instruction that can be executed on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the second aspect are implemented.

[0018] In the eighth aspect, a second device is provided, comprising a processor and a communication interface, wherein the communication interface is used to receive a first signal sent by a first device, wherein the first signal is sent based on a first transmission power and a first power allocation parameter, wherein the first power allocation parameter is used to allocate the transmission power of a signal that meets the requirements of a first performance and a second performance or meets the requirements of a third performance; the first performance, the second performance, and the third performance correspond to signals with different functions.

[0019] In a ninth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.

[0020] In the tenth aspect, a wireless communication system is provided, including: a first device and a second device, wherein the first device can be used to execute the steps of the method described in the first aspect, and the second device can be used to execute the steps of the method described in the second aspect.

[0021] In the eleventh aspect, a chip is provided, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the method described in the first aspect, or to implement the method described in the second aspect.

[0022] In a twelfth aspect, a computer program / program product is provided, wherein the computer program / program product is stored in a storage medium, and the program / program product is executed by at least one processor to implement the steps described in the first aspect or the second aspect.

[0023] In an embodiment of the present application, a first device sends a first signal to a second device based on a first transmission power and a first power allocation parameter; wherein the first power allocation parameter is used to allocate the transmission power of a signal that meets the requirements of the first performance and the second performance or meets the requirements of the third performance; the first performance, the second performance, and the third performance correspond to signals with different functions, and the first power allocation parameter is used to allocate the transmission power of signals with different functions. In the above scheme, appropriate transmission power and power allocation parameters can be selected according to the requirements of actual business and scenarios, taking into account both communication performance and perception performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of the architecture of a wireless communication system provided in an embodiment of the present application;

[0025] Figure 2 It is one of the flowcharts of the power allocation method of ISAC provided in the embodiment of the present application;

[0026] Figure 3 It is a schematic diagram of the principle of perceptual pilot superposition of the power allocation method of ISAC provided in an embodiment of the present application;

[0027] Figure 4 It is a schematic diagram of the interaction flow of the power allocation method of the ISAC provided in an embodiment of the present application;

[0028] Figure 5 This is the second flow chart of the power allocation method of the ISAC provided in the embodiment of the present application;

[0029] Figure 6 It is one of the structural schematic diagrams of the power distribution device of ISAC provided in the embodiment of the present application;

[0030] Figure 7 It is one of the structural schematic diagrams of the power distribution device of ISAC provided in the embodiment of the present application;

[0031] Figure 8 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application;

[0032] Fig. 9 is a schematic diagram of the structure of a terminal in an embodiment of the present application;

[0033] Fig.10 It is a schematic diagram of the structure of the network side device of an embodiment of the present application. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

[0035] The terms "first", "second", etc. of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of one type, and the number of objects is not limited, for example, the first object can be one or more. In addition, "or" in the present application represents at least one of the connected objects. For example, "A or B" covers three schemes, namely, Scheme 1: including A but not including B; Scheme 2: including B but not including A; Scheme 3: including both A and B. The character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0036] The term "indication" in this application can be a direct indication (or explicit indication) or an indirect indication (or implicit indication). A direct indication can be understood as the sender explicitly informing the receiver of specific information, operations to be performed, or request results in the sent indication; an indirect indication can be understood as the receiver determining the corresponding information according to the indication sent by the sender, or making a judgment and determining the operation to be performed or the request result according to the judgment result.

[0037] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) or other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used for the systems and radio technologies mentioned above as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for illustrative purposes, and NR terminology is used in most of the following descriptions, but these technologies can also be applied to systems other than NR systems, such as the 6th generation (6 thGeneration, 6G) communication system.

[0038] Figure 1A block diagram of a wireless communication system applicable to an embodiment of the present application is shown. The wireless communication system includes a terminal 11 and a network side device 12. Among them, the terminal 11 can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a handheld computer, a netbook, an ultra-mobile personal computer (Ultra-mobile Personal Computer, UMPC), a mobile Internet device (Mobile Internet Device, MID), an augmented reality (Augmented Reality, AR), a virtual reality (Virtual Reality, VR) device, a robot, a wearable device (Wearable Device), an aircraft (flight vehicle), a vehicle-mounted device (Vehicle User Equipment, VUE), a ship-mounted device, a pedestrian terminal (Pedestrian User Equipment, PUE), a smart home (home appliances with wireless communication functions, such as refrigerators, televisions, washing machines or furniture, etc.), a game console, a personal computer (Personal Computer, PC), a teller machine or a 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, smart anklets, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle-mounted device can also be called a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 may include an access network device or a core network device, wherein the access network device may also be referred to as a radio access network (Radio Access Network, RAN) device, a radio access network function or a radio access network unit. The access network device may include a base station, a wireless local area network (Wireless Local Area Network, WLAN) access point (Access Point, AP) or a wireless fidelity (Wireless Fidelity, WiFi) node, etc.Among them, the base station may be referred to as a Node B (NB), an evolved Node B (eNB), a next generation Node B (gNB), a New Radio Node B (NR Node B), an access point, a Relay Base Station (RBS), a Serving Base Station (SBS), a Base Transceiver Station (BTS), a radio base station, a radio transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a Home Node B (HNB), a Home Evolved Node B, a Transmission Reception Point (TRP) or other appropriate terms in the field. As long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiments of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

[0039] The core network equipment may include but is not limited to at least one of the following: core network node, core network function, mobility management entity (Mobility Management Entity, MME), access mobility management function (Access and Mobility Management Function, AMF), session management function (Session Management Function, SMF), user plane function (User Plane Function, UPF), policy control function (Policy Control Function, PCF), policy and charging rules function unit (Policy and Charging Rules Function, PCRF), edge application service discovery function (Edge Application Server Discovery Function, EASDF), unified data management (Unified Data Management, UDM), unified data storage (Unified Data Repository, UDR), home user server (Home Subscriber Server, HSS), centralized network configuration (CNC), network storage function (Network Repository Function, NRF), network exposure function (Network Exposure Function, NEF), local NEF (Local NEF, or L-NEF), binding support function (Binding Support Function, BSF), application function (Application Function, AF), etc. It should be noted that in the embodiments of the present application, only the core network device in the NR system is introduced as an example, and the specific type of the core network device is not limited.

[0040] First, the nouns and application scenarios involved in the embodiments of the present application are introduced:

[0041] Future communication devices will integrate the dual functions of communication and perception through a protocol stack based on ISAC technology, realize hardware sharing, spectrum sharing, and protocol intercommunication between communication and perception signals, and thus realize the integrated design of communication and perception functions. The core feature of future ISAC devices is the realization of waveform multiplexing between communication and perception 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 perception system can be intercommunication, thereby realizing mutual assistance between communication and perception and further optimizing the overall performance.

[0042] The biggest challenge facing ISAC technology is the problem of coordinated work between 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, whose optimization goal is the optimal lower limit of the estimated variance of the target parameters (distance, speed, Doppler, etc.), that is, the Cramér-Rao bound of the fuzzy function. This difference in functional emphasis makes it difficult to optimize the performance of communication and perception at the same time in the design of the ISAC system, and it can only be compromised between the two according to the needs.

[0043] In the integrated design of radar communication, waveform design is the key. The key to the integrated waveform design is to minimize the interference between communication signals and perception signals, meet the requirements of communication and perception functions, and improve spectrum efficiency under the premise of ensuring system performance. The integrated waveform can be reused, including time division multiplexing, frequency division multiplexing, and space division multiplexing, or it can be shared, that is, to design a new fusion waveform. When designing, it is necessary to consider whether the integrated waveform should be based on communication function or radar detection function, and find a balance 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 (DSSS) and chirp spread spectrum (CSS); the multi-carrier integrated waveform is typically orthogonal frequency division multiplexing (OFDM) waveform, which has certain advantages over single-carrier spread spectrum integrated waveforms, such as higher spectrum efficiency, flexible bandwidth resource allocation, no range-Doppler coupling effect, etc., and is easy to integrate with the existing 5G communication system.

[0044] The traditional multi-carrier integrated waveform is mainly based on the OFDM waveform, and its advantages mainly lie in simple random signal generation, fully digital processing, and extremely high time-frequency processing gain. However, since the high accuracy of OFDM radar depends on the joint detection of multiple OFDM symbols, and the cyclic prefix (CP) of the OFDM symbol does not participate in the measurement, it will cause certain overhead; at the same time, the OFDM waveform has poor adaptability to high Doppler scenarios and can only detect Doppler frequency shifts of up to 10% of the subcarrier spacing, which has limitations in application scenarios.

[0045] The Orthogonal Time Frequency Space (OTFS) waveform as a sensing waveform overcomes the two defects of the aforementioned OFDM waveform. First, for an M×N resource grid of the same size, assume that M corresponds to the number of subcarriers and N corresponds to the number of symbols. The OTFS signal only needs to add a CP in front of the N symbols to avoid interference between time slots; while the traditional OFDM signal needs to add a CP in front of each symbol to avoid interference between symbols, and a total of N CPs are required. Therefore, the overhead of OTFS is significantly reduced, which means that it can use more energy to sense the signal itself, thereby improving the detection and tracking capabilities of the target. Secondly, due to the natural tolerance of the OTFS signal to high Doppler, the OTFS radar has good detection capabilities for large Doppler frequency shifts in high-speed scenarios, which is much better than OFDM radar.

[0046] In radar design, OTFS signals are usually generated using a random symbol set in the delay-Doppler (DD) domain. The transmission power of each symbol in the random symbol set is equal. The use of a random symbol set can avoid being identified and intercepted. At the same time, since the transmitting end is known, it will not hinder the detection of the echo. In the communication system, both data and pilot / reference signals are used to transmit certain information, so random symbol sets will not be sent. Secondly, in the communication system, the pilot is mainly used to obtain information such as channel state information (CSI), and usually requires a higher received signal to interference plus noise ratio (SINR) to ensure the reliability of the measurement. Therefore, in the communication system, the transmission power of each symbol in the same frame may not be the same. It can be seen that there are mainly the following differences in the design of radar perception signals and communication pilot signals:

[0047] 1. Radar sensing signals require sending as many samples as possible to increase the cumulative energy of the echo signal and ensure detection accuracy; communication pilot signals require reducing the number of samples sent as much as possible while ensuring the accuracy of CSI estimation to reduce resource overhead.

[0048] 2. The sending and receiving devices of radar sensing signals are usually the same, and there is usually no special requirement for the design of the sending symbol set; the sending and receiving devices of communication pilot signals are different, and the sending symbol set usually needs to be specially designed to ensure the detection performance of the pilot.

[0049] 3. Considering only the Line of Sight (LoS) path, the propagation distance of the radar sensing signal from the transmitter TX to the receiver RX is twice that of the communication pilot signal, so there are differences in the coverage requirements between the two.

[0050] For multipath communication systems, the most optimized power allocation method is usually water filling power allocation, the core idea of ​​which is to allocate more power to better sub-channels, so as to maximize the total throughput. At the same time, the MIMO communication system can further pre-equalize the multipath channel through precoding technology, so that the gain of each sub-channel is approximate (that is, the eigenvalues ​​corresponding to each subspace of the channel matrix are approximate). Optionally, when using precoding, the preferred communication strategy of the ISAC system is to use uniform power allocation among multiple antennas.

[0051] For the radar system, its working goal is to detect objects in every direction as much as possible. Therefore, its corresponding optimization strategy is to maximize the effective SNR of the radar echo signal (defined as the sum of the SNRs of each sub-path echo). For the perception signal of the ISAC system, in order to obtain better radar perception performance, non-uniform power distribution can be adopted among multiple antennas, and a higher power is tended to be allocated to the sub-channel with poor perception channel quality. Assume that in the nth t The power distributed in the discrete angle directions is Assuming that the number and position of the detected objects are known, that is, in the radar tracking state, use a i,l represents the angular direction corresponding to the lth echo path of the i-th detected object. In this direction, the power allocation that can maximize the effective SNR of the radar echo signal can be calculated as follows: where K is the number of detected objects.

[0052]

[0053] For the ISAC system, the synaesthesia signals may be used for both communication and perception. Therefore, its angle domain power allocation method needs to take into account both communication and perception performance and make adaptive adjustments according to the requirements of different scenarios and services.

[0054] For example, the ISAC system based on the 3GPP protocol is usually deployed by operators. Its core demand is to use communication signals to achieve perception functions. Therefore, the performance of the communication system should be guaranteed first. On this basis, further technical means are used to optimize the perception performance, and finally achieve the purpose of using communication signals to achieve perception performance with appropriate accuracy. Nevertheless, it does not rule out that some businesses in certain segments may be perception-based and communication-assisted. In this case, the design principle of the system changes to optimize communication performance while ensuring perception performance.

[0055] In the embodiment of the present application, for the ISAC system, the communication performance and perception performance compromise is achieved by adjusting the total transmission power and the power allocation parameters of signals with different functions. Therefore, in the actual system, a suitable power allocation scheme can be selected according to the different needs of the business and scenarios, taking into account or focusing on the communication performance or radar perception performance according to the needs.

[0056] It should be noted that the first performance requirement, the second performance requirement and the third performance requirement in the present application may be specific values ​​or ranges, etc., and the embodiments of the present application are not limited to this.

[0057] The power allocation method of the ISAC provided in the embodiment of the present application is described in detail below through some embodiments and application scenarios in combination with the accompanying drawings.

[0058] Please refer to Figure 2 The embodiment of the present application provides a power allocation method of an ISAC. The execution subject of the embodiment is a first device. The method includes:

[0059] Step 101: A first device obtains a first transmit power and a first power allocation parameter;

[0060] Specifically, the first device may be a transmitting side device, and the first device obtains a first transmitting power and a first power allocation parameter, where the first power allocation parameter, for example, represents the ratio of transmitting power allocation for signals with different functions, such as the ratio of transmitting power allocation for communication signals and perception signals.

[0061] Among them, the first transmission power and the first power allocation parameter can be determined according to the channel or signal measurement results, the demodulation performance of the receiver, etc., or can be obtained by adjusting the initial value agreed upon in the protocol based on the channel or signal measurement results, the demodulation performance of the receiver, etc. The embodiments of the present application are not limited to this.

[0062] Step 102: The first device sends a first signal to the second device based on the first transmission power and the first power allocation parameter;

[0063] Among them, the first power allocation parameter is used to allocate the transmission power of the signal that meets the requirements of the first performance and the second performance or meets the requirements of the third performance; the first performance, the second performance, and the third performance correspond to signals with different functions.

[0064] Specifically, the first signal obtained based on the first transmission power and the first power allocation parameter meets the first performance requirement and the second performance requirement, or the first signal meets the third performance requirement.

[0065] Among them, signals of different functions may correspond to different performances, for example, signals used to realize perception functions may correspond to perception performance, and signals used to realize communication functions may correspond to communication performance, or, signals of different functions may correspond to the same performance, for example, signals used to realize perception functions and signals used to realize communication functions may correspond to the same third performance, such as communication and perception performance, and the third performance may be reflected by a performance indicator.

[0066] It is understandable that signals with different functions need to meet different performance requirements to achieve normal functions.

[0067] Optionally, whether the first signal meets the first performance requirement and the second performance requirement can be determined based on information fed back by the receiving end. For example, the receiving end feeds back the first performance indicator or the second performance indicator corresponding to the first signal, or the receiving end directly feeds back whether the first performance indicator corresponding to the first signal meets the first performance upper limit or the first performance lower limit; or whether the second performance indicator corresponding to the first signal meets the second performance upper limit or the second performance lower limit.

[0068] Optionally, whether the first signal meets the third performance requirement can be determined based on information fed back by the receiving end. For example, the receiving end feeds back the third performance indicator corresponding to the first signal, or the receiving end directly feeds back whether the third performance indicator corresponding to the third signal meets the third performance upper limit and / or the third performance lower limit.

[0069] For a single-station ISAC system, the radar signal is self-transmitted and self-received, that is, the transmitter and receiver of the radar signal are in the same device; for a multi-station ISAC system, the radar signal is self-transmitted and self-received, that is, the transmitter and receiver of the radar are in different devices.

[0070] The first device sends a first signal to the second device based on a first transmission power and a first power allocation parameter, and the first signal can be used for two purposes: communication or perception.

[0071] Optionally, the first performance is a communication performance, and the second performance is a perception performance; or,

[0072] The first performance is perception performance, and the second performance is communication performance.

[0073] In the case where the first performance is the communication performance and the second performance is the perception performance, the first performance indicator is the communication performance indicator and the second performance indicator is the perception performance indicator;

[0074] In the case where the first performance is perception performance and the second performance is communication performance, the first performance indicator is a perception performance indicator and the second performance indicator is a communication performance indicator.

[0075] Optionally, the third performance is communication and perception performance.

[0076] Specifically, satisfying communication and perception performance may refer to satisfying communication performance and perception performance, such as reaching the requirements of communication performance indicators and perception performance indicators, which may be specifically represented by a comprehensive indicator or by different performance indicators.

[0077] In the method of this embodiment, the first device sends a first signal to the second device based on a first transmission power and a first power allocation parameter; wherein the first power allocation parameter is used to allocate the transmission power of the signal that meets the requirements of the first performance and the second performance or meets the requirements of the third performance; the first performance, the second performance, and the third performance correspond to signals with different functions; the first power allocation parameter is used to allocate the transmission power of signals with different functions. In the above scheme, appropriate transmission power and power allocation parameters can be selected according to the requirements of actual business and scenarios, taking into account both communication performance and perception performance.

[0078] Optionally, the first signal is obtained by adding symbols of a first perceptual pilot and data symbols in the time-frequency domain, the number of the first perceptual pilot is one, or the first perceptual pilot is obtained by superimposing multiple different second perceptual pilots, and different second perceptual pilots correspond to different antenna ports.

[0079] Specifically, the first perceptual pilot is obtained in the delayed Doppler domain, and can be converted to the time-frequency domain and superimposed with the data symbol in the time-frequency domain, wherein the first perceptual pilot can be a second perceptual pilot, or a plurality of second perceptual pilots superimposed.

[0080] Different second perception pilots correspond to different antenna ports, such as output ports of a MIMO system.

[0081] Exemplarily, the pilot block size of the second perceptual pilot is N P ×M P ,N P ≤N,M P≤M, mapped in the delay Doppler domain resource of size N×M, where M and N are integers greater than 0. When using a multi-antenna system for multi-target perception, the second perception pilots corresponding to different antenna ports can be superimposed and placed, and the generation method, mapping mode, precoding format, etc. of each second perception pilot can be related to the number of the antenna port. The second perception pilot is superimposed and placed with the OFDM data after ISFFT transformation, such as Figure 3 shown.

[0082] The second perceptual pilot is superimposed with the data block in the time-frequency domain. Optionally, the second perceptual pilot can be configured across data blocks (OFDM subbands / time slots), etc. Multiple second perceptual pilots can be superimposed (the second perceptual pilots are superimposed in the delayed Doppler domain, or the transformation of the second perceptual pilots is superimposed in the time-frequency domain) to share time-frequency resources.

[0083] On the transmitting side, the pilot defined in the delay-Doppler domain is transformed into the time-frequency domain and scrambled (scrambling is optional), and is mapped on the time-frequency domain resource grid together with the scrambled (scrambling is optional) data defined in the time-frequency domain. Then, it is converted into a time-domain signal through OFDM modulation and sent.

[0084] On the perception receiving side, the received signal is demodulated by OFDM to obtain a time-frequency domain perception signal. The obtained signal is descrambled (descrambling is optional) and then transformed to the delayed Doppler domain to obtain a delayed Doppler domain perception signal, which is then used for perception detection.

[0085] On the communication receiving side, the received signal is demodulated by OFDM to obtain a communication signal in the time-frequency domain. After the obtained signal is descrambled (descrambling is optional), channel estimation is performed in the time-frequency domain. Using the obtained channel estimation results, symbol detection is performed on the communication signal in the time-frequency domain.

[0086] The data block includes at least one data symbol.

[0087] The above pilot mapping method has the following advantages:

[0088] 1) The pilot block in the delayed Doppler domain has the full diversity characteristics of the time-frequency domain, which can perform more accurate perception detection.

[0089] 2) The pilot block in the delay-Doppler domain can be transformed into the time-frequency domain, and modulated and demodulated based on OFDM in the time-frequency domain with the data symbols multiplexed in the time-frequency domain, which is compatible with the existing protocols.

[0090] 3) The time-frequency domain resources occupied by the pilot block in the delayed Doppler domain can span multiple communication time slots and multiple communication sub-bands, and are suitable for a variety of perception demand scenarios.

[0091] 4) By utilizing the excellent autocorrelation and cross-correlation characteristics of the designed two-dimensional pilot block, the mutual interference between the pilot and the communication in the synaesthesia system can be ignored.

[0092] In practical applications, the above pilot mapping solution also needs to solve the following problems:

[0093] 1) Since the perception pilot and data are superimposed in the time-frequency domain in a code division multiplexing (CDM) manner and sent using a common RF link, the total power is limited. At this time, how to reasonably allocate power between the perception and data signals to optimize the overall performance of the ISAC system, the specific solution is detailed in the specific description of the following embodiments of this application.

[0094] 2) Due to the motion characteristics of the perception target and the communication target, the perception channel and the communication channel topology are in dynamic change. Therefore, a constant power allocation scheme may not be suitable for such a dynamic scenario. It may be necessary to dynamically adapt according to the relevant measurement quantities of the perception and communication channels to better capture channel changes and optimize the overall system performance. For the adaptive power allocation scheme, please refer to the specific description of the following embodiments.

[0095] In the embodiment of the present application, the parameter characterizing the radar perception performance is denoted as pf radar , the parameter may be the signal-to-noise ratio (SNR) of the radar echo signal, the signal-to-interference plus noise ratio (SINR), the number and amplitude of peaks of the radar ambiguity function, etc. The lower limit of the requirement for acceptable perceptual performance is preset as pfr0, and the upper limit of the requirement for acceptable perceptual performance is preset as pfr1.

[0096] For example, pf radar When defined as the perception SINR, it is assumed that the allocation ratio of the total signal power P between the perception and communication signals is configured as:

[0097] pa={p s ,p c},p s ,p c ≥0,p s +p c =1.

[0098] Then the perceived SINR can be defined as follows:

[0099]

[0100] where θ 0iis the inner product of the designed two-dimensional sensing pilot and its cyclic shift version in the delay / Doppler dimension assuming that both are unit power, ρ 0i is the inner product of the two-dimensional sensing pilot and data signal designed assuming that both are unit power, It is the inner product of the two-dimensional perceptual pilot and noise designed assuming that both are unit power.

[0101] The parameter characterizing the communication performance is denoted as pf comm , which 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), SNR, SINR, Bit Error Rate (BER), Block Error Rate (BLER), Throughput, Channel Capacity, Spectral Efficiency, etc. The lower limit of the acceptable communication performance requirement is preset as pfc0, and the upper limit of the acceptable communication performance requirement is preset as pfc1. The maximum transmission power of the ISAC system is P max .

[0102] In one embodiment, step 101 may be implemented in the following ways:

[0103] One implementation method a:

[0104] Acquire a second transmit power and a second power allocation parameter;

[0105] When the second signal meets the requirement of the first performance and the second signal exceeds the upper limit of the requirement of the second performance, the first device reduces the second transmit power to obtain the first transmit power; and the first power allocation parameter is the second power allocation parameter;

[0106] The second signal is obtained based on the second transmission power and the second power allocation parameter.

[0107] Specifically, the first device on the transmitting side selects an initial second transmitting power P0, where the value of P0 can be specified by the protocol or determined based on the measurement results of the signal or channel, the demodulation performance of the receiver, etc., including at least one of the following: RSRP, RSSI, SNR, SINR, BER, BLER, throughput, channel capacity, spectral efficiency, etc.

[0108] Assume that the initial transmit power configuration is:

[0109] pa0={p s ,p c},p s ,p c ≥0,p s +p c =1.

[0110] In fact, pa0 defines the allocation ratio of P0 between perception and communication signals. The perception performance index under the initial configuration is pf radar (P0, pa0), the communication performance index under the initial configuration is pf comm (P0, pa0) pa0 is the second power allocation parameter.

[0111] Optionally, the first performance indicator or the second performance indicator corresponding to the second signal can be determined based on information fed back by the receiving side, which is similar to the first signal and will not be described in detail in the embodiments of the present application.

[0112] Exemplarily, the first performance is the communication performance, the second performance is the perception performance, and the second signal satisfies the communication performance requirement, that is, pf comm (P0, pa0) ≥ pfc0, the second transmission power at this time is set to P1 = P0; when the second signal exceeds the upper limit of the second performance requirement, that is, pf radar When (P1, pa0) ≥ pfr1, the radar perception performance overflows. At this time, the second transmission power may be reduced. When P2 = P1-b×ε0, b∈{0, N +},N + represents a positive integer, P2 represents the adjusted second transmission power, and pf comm When (P2, pa0) ≥ pfc0, use the power configuration (P2, pa0), otherwise still use the current power configuration (P1, pa0). b represents the number of adjustments.

[0113] Exemplarily, the first performance is the perception performance, the second performance is the communication performance, and the second signal satisfies the perception performance, that is, pf radar (P0, pa0) ≥ pfr0, P1 = P0; when the second signal exceeds the second performance requirement, that is, the communication performance index corresponding to the second signal is greater than Pfc1, that is, the communication performance overflows, the second transmission power can be reduced at this time, when P2 = P1-b×ε0, b∈{0, N +},N + represents a positive integer, and pf radar When (P2, pa0)≥pfr0, the power configuration (P2, pa0) is used, otherwise the current power configuration (P1, pa0) is still used. Wherein b represents the number of adjustments and the second power allocation parameter pa0 is used as the first power allocation parameter.

[0114] Optionally, ε0 ​​may be pre-configured or agreed upon by a protocol.

[0115] Optionally, ε0 ​​may also be determined based on measurement results of a signal or channel, receiver demodulation performance, etc.

[0116] Optionally, after reducing the second transmit power, if the first performance indicator does not meet the first performance, or the second performance indicator does not meet the second performance, the second power allocation parameter can also be adjusted, such as increasing the power allocation ratio corresponding to a certain performance, reducing the power allocation ratio corresponding to another performance, or increasing the second transmit power.

[0117] In the above implementation, an initial second transmission power and a second power allocation parameter are obtained, and based on the needs of actual services and scenarios, the total transmission power and the power allocation of signals with different functions are adjusted, that is, appropriate transmission power and power allocation parameters are selected to take into account both communication performance and perception performance.

[0118] Another implementation method b:

[0119] Acquire a second transmit power and a second power allocation parameter;

[0120] When the second signal meets the requirement of the first performance and the second signal does not reach the lower limit of the requirement of the second performance, the first device adjusts the second power allocation parameter to obtain the first power allocation parameter; the first transmit power is the second transmit power;

[0121] The second signal is obtained based on the second transmission power and the second power allocation parameter.

[0122] Optionally, the second transmission power and the second power allocation parameter refer to the description in implementation mode a and are not repeated here.

[0123] Specifically, the first performance is the communication performance, the second performance is the perception performance, and the second signal meets the communication performance requirement and the second signal does not meet the lower limit of the perception performance requirement (i.e., pf radar In the case of (P0, pa0)<pfr0), the perceived performance index can be improved by adjusting the second power allocation parameter, and the second transmission power P0 is used as the first transmission power.

[0124] The perceived performance index (pf) obtained based on the adjusted second power allocation parameter (ie, the first power allocation parameter pa1) radar (P0, pa1)) satisfies the perception performance. At this time, the communication performance index also satisfies the communication performance.

[0125] Exemplarily, the first performance is the perception performance, the second performance is the communication performance, and the second signal satisfies the perception performance and the second signal does not meet the lower limit of the communication performance (i.e., the communication performance index pf corresponding to the second signal). comm In the case of (P0, pa0) < pfc0), the communication performance index can be improved by adjusting the second power allocation parameter, and the second transmission power is used as the first transmission power.

[0126] The communication performance index (pf) obtained based on the adjusted second power allocation parameter (ie, the first power allocation parameter pa1) radar (P0, pa1)) satisfies the communication performance. At this time, the perception performance index also satisfies the perception performance.

[0127] Optionally, after adjusting the second power allocation parameter, if the first performance indicator does not meet the first performance, or the second performance indicator does not meet the second performance, the second power allocation parameter may be adjusted, or the second transmission power may be increased.

[0128] Furthermore, after the first device adjusts the second power allocation parameter to obtain the first power allocation parameter, the following steps may also be included:

[0129] When the fourth signal meets the requirements of the first performance, the fourth signal does not reach the lower limit of the requirements of the second performance, and the fifth signal does not meet the requirements of the first performance and the second performance, the first device increases the second transmit power to obtain the first transmit power; the fourth signal is obtained based on the second power allocation parameters and the second transmit power after the c-1th adjustment, and the fifth signal is obtained based on the second power allocation parameters and the second transmit power after the cth adjustment, where c is an integer greater than 1.

[0130] Exemplarily, the first performance is the communication performance, and the second performance is the perception performance. When the second signal meets the communication performance requirement but does not meet the radar perception performance requirement, that is, when pf radar When (P1, pa0) < pfr0, the radar perception performance does not meet the requirements, and the communication performance may overflow. Assuming that the power allocation parameter has been adjusted to pa1 = {p s +c×δ0,p c -c×δ0}, δ0 is the step size of power ratio adjustment, and c is the number of adjustments. radar (P1, pa1) ≥ pfr0 and pf comm When (P1, pa1) ≥ pfc0, the communication and perception performances meet the requirements, and the power configuration (P1, pa0) is adopted. In another case, when the power allocation reaches pa2 = {p s +(c-1)×δ0,p c -(c-1)×δ0}, pfradar (P1, pa2)<pfr0 and pf comm (P1, pa2) ≥ pfc0, and when the power allocation reaches pa3 = {p s +c×δ0,p c -c×δ0}, pf radar (P1, pa3)<pfr0 and pf comm (P1, pa3)<pfc0, which means that simply adjusting the power allocation parameters cannot meet the needs of communication and perception. At this time, it is necessary to further increase the second transmit power to obtain the first transmit power, for example, increase the second transmit power based on a certain step size.

[0131] Among them, the fourth signal is a signal obtained based on (P1, pa2), and the fifth signal is a signal obtained based on (P1, pa3).

[0132] Exemplarily, the first performance is the perception performance, the second performance is the communication performance, and the second signal satisfies the perception performance and the second signal does not meet the lower limit of the communication performance (i.e., the communication performance index pf corresponding to the second signal). comm (P0, pa0)<pfc0), the communication performance does not meet the requirements, and the radar perception performance may overflow. Assuming that the power allocation parameter has been adjusted to pa1={p s +c×δ0,p c -c×δ0}, δ0 is the step size of power ratio adjustment, and c is the number of adjustments. radar (P1, pa1) ≥ pfr0 and pf comm When (P1, pa1) ≥ pfc0, the communication and perception performances meet the requirements, and the power configuration (P1, pa0) is adopted. In another case, when the power allocation reaches pa2 = {p s +(c-1)×δ0,p c -(c-1)×δ0}, pf radar (P1, pa2) ≥ pfr0 and pf comm (P1, pa2)<pfc0, and when the power allocation reaches pa3={p s +c×δ0,p c -c×δ0}, pf radar (P1, pa3)<pfr0 and pf comm (P1, pa3)<pfc0, which means that simply adjusting the power allocation parameters cannot meet the needs of communication and perception. At this time, it is necessary to further increase the second transmission power to obtain the first transmission power.

[0133] Optionally, the first device adjusts the adjusted second power allocation parameter to obtain the first power allocation parameter, including:

[0134] The first device obtains a power allocation adjustment step size;

[0135] The first device obtains a first power allocation parameter based on the power allocation adjustment step size and the adjusted second transmit power.

[0136] For example, the power allocation ratio corresponding to the first performance in the second power allocation parameter is increased based on the power allocation adjustment step, and the power allocation ratio corresponding to the second performance in the second power allocation parameter is decreased based on the power allocation adjustment step.

[0137] Optionally, the power allocation adjustment step size may be pre-configured or agreed upon by a protocol.

[0138] Optionally, the power allocation adjustment step size may also be determined based on measurement results of signals or channels, receiver demodulation performance, etc.

[0139] In the above implementation, an initial second transmission power and a second power allocation parameter are obtained, and based on the needs of actual services and scenarios, the total transmission power and the power allocation of signals with different functions are adjusted, that is, appropriate transmission power and power allocation parameters are selected to take into account both communication performance and perception performance.

[0140] Another implementation method c:

[0141] Acquire a second transmit power and a second power allocation parameter;

[0142] When the second signal does not meet the requirement of the first performance, the first device increases the second transmit power to obtain an adjusted second transmit power; the second signal is obtained based on the second transmit power and the second power allocation parameter;

[0143] When the third signal meets the requirement of the first performance and the third signal does not reach the lower limit of the requirement of the second performance, the first device increases the adjusted second transmit power to obtain the first transmit power; the third signal is obtained based on the adjusted second transmit power and the second power allocation parameter;

[0144] When the third signal meets the first performance requirement and exceeds the upper limit of the second performance requirement, 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.

[0145] Optionally, the second transmission power and the second power allocation parameter refer to the description in implementation mode a and are not repeated here.

[0146] Exemplarily, the first performance is the communication performance, the second performance is the perception performance, and the second signal does not meet the communication performance (ie, the communication performance index pf corresponding to the second signal) comm (P0, pa0) is less than pfc0), the first device increases the second transmission power to obtain the adjusted second transmission power, assuming that ε0>0 is the step size of the power adjustment, until P1=P0+a×ε0 is found, P1≤P max ,,a∈{0,N +}, and pf comm (P1, pa0) ≥ pfc0, where a represents the number of adjustments.

[0147] The third signal is obtained based on the adjusted second transmission power and the second power allocation parameter. Optionally, the first performance indicator or the second performance indicator corresponding to the third signal can be determined based on information fed back by the receiving side, similar to the first signal, and will not be described in detail in the embodiment of the present application.

[0148] When the third signal meets the communication performance requirement and the third signal does not meet the lower limit of the perception performance requirement, the radar perception performance does not meet the requirement, that is, pf radar (P1, pa0)<pfr0. Since the communication performance has just reached the standard under the initial power allocation at this time, it is necessary to continue to increase the global power boost perception performance, that is, set P2=P1+ε1, ε1 is the step size of power adjustment.

[0149] When the third signal meets the communication performance requirement and does not meet the upper limit of the perception performance, that is, the radar perception performance overflows, pf radar (P1, pa0) ≥ pfr1, the adjusted second transmission power can be reduced when P2 = P1-b×ε0, b∈{0, N +}, and pf comm When (P2, pa0) ≥ pfc0, use the power configuration (P2, pa0), otherwise still use the current power configuration (P1, pa0). b represents the number of adjustments.

[0150] Exemplarily, the first performance is the perception performance, the second performance is the communication performance, and the second signal does not meet the perception performance (ie, the perception performance index pf corresponding to the second signal) radar (P0, pa0) is less than pfr0), the first device increases the second transmission power to obtain an adjusted second transmission power, for example, the adjusted second transmission power P1 = P0 + a × ε0, P1 ≤ P max ,,a∈{0,N +}, and pf radar (P1, pa0)≥pfr0, ε0 is the step size of power adjustment.

[0151] The third signal is determined based on the adjusted second transmission power and the second power allocation parameter. Optionally, the first performance indicator or the second performance indicator corresponding to the third signal can be determined based on information fed back by the receiving side, similar to the first signal, and will not be described in detail in the embodiment of the present application.

[0152] When the third signal satisfies the perception performance and the third signal does not meet the lower limit of the communication performance (i.e., the communication performance index pf corresponding to the third signal comm (P1, pa0) is less than pfc0), since the perceived performance has just reached the standard under the initial power allocation, it is necessary to continue to increase the global power to improve the perceived performance, that is, set P2 = P1 + ε1, ε1 is the step size of power adjustment; or,

[0153] When the third signal meets the perception performance requirement, and the third signal does not meet the upper limit of the communication performance (i.e., the communication performance index pf corresponding to the third signal) comm (P1, pa0) ≥ pfc1), the first device reduces the adjusted second transmission power, when P2 = P1-b×ε0, b∈{0, N +}, and pf comm When (P2, pa0) ≥ pfc0, the power configuration (P2, pa0) is used, otherwise the current power configuration (P1, pa0) is still used. Where b represents the number of adjustments. The communication performance index obtained based on the reduced second transmission power (i.e., the first transmission power P2) satisfies the communication performance, i.e., pfc0 ≤ pfc0 comm (P2, pa0)≤pfc1. At this time, the perceptual performance index also satisfies the perceptual performance.

[0154] Optionally, after reducing the second transmit power, if the first performance indicator does not meet the first performance, or the second performance indicator does not meet the second performance, the second power allocation parameter may be adjusted, or the second transmit power may be increased.

[0155] In the above implementation, an initial second transmission power and a second power allocation parameter are obtained, and based on the needs of actual services and scenarios, the total transmission power and the power allocation of signals with different functions are adjusted, that is, appropriate transmission power and power allocation parameters are selected to take into account both communication performance and perception performance.

[0156] Another implementation method d:

[0157] Acquire a second transmit power and a second power allocation parameter;

[0158] When the second signal does not reach the lower limit of the third performance requirement, the first device adjusts the second power allocation parameter to obtain the first power allocation parameter; the first transmit power is the second transmit power;

[0159] When the second signal exceeds the upper limit of the third performance requirement, the first device reduces the adjusted second transmission power to obtain the first transmission power; and the first power allocation parameter is the second power allocation parameter;

[0160] The second signal is obtained based on the second transmission power and the second power allocation parameter.

[0161] Assume that the ISAC system has a global performance evaluation index pf isac (P, pa), this performance evaluation index comprehensively considers the trade-off between communication and perception functions, and can use a quantized value to represent the performance quality. This performance is the third performance, and this performance evaluation index is the third performance index. Optionally, the third performance is the communication and perception performance, which can be referred to as the synaesthesia performance. The lower bound of the acceptable synaesthesia performance is preset as Pf0, and the upper bound of the acceptable performance is preset as pf1.

[0162] The sending side selects the initial global sending power value P0. Assume that the initial power allocation parameter configuration is:

[0163] pa0={p s , p c}, p s , p c ≥0, p s +p c =1.

[0164] In fact, pa0 defines the distribution ratio of P0 between perception and communication signals. The synaesthesia performance in the initial configuration is pf isac (P0, pa0).

[0165] For example, when the second signal does not reach the lower limit of the requirement of the synaesthesia performance, that is, pf isac (P0, pa0)<pf0, the synaesthesia performance does not meet the requirements. At this time, the performance can be improved by adjusting the second power allocation parameter. That is, the second power allocation parameter can be adjusted step by step. Assume that δ0 is the step size of the power ratio adjustment (the value can be positive / negative), and c represents the number of adjustments. Until pa1={p s +c×δ0,p c -c×δ0}, and pf isac (P1, pa1) ≥ pf0, P1 = P0. If it is not possible to find pa1 such that pf isac (P1, pa1)≥Pf0, the global second transmission power needs to be adjusted.

[0166] In the case where the second signal exceeds the upper limit of the third performance requirement, when pf isacWhen (P0, pa0) ≥ pf1, the synaesthesia performance is excessive and the overhead can be reduced by lowering the second transmission power.

[0167] Optionally, when there exists P2 = P1-b×ε0, b∈{0, N +}, and pf0≤pf isac When (P2, pa0)≤pf1, use the power configuration (P2, pa0), otherwise still use the current power configuration (P1, pa0). Where b represents the number of adjustments.

[0168] In the case where the second signal meets the third performance requirement, when pf isac When (P0, pa0) ≥ pf0, the synaesthesia performance meets the requirement and the current configuration is used directly.

[0169] Further, after the first device adjusts the second power allocation parameter to obtain the first power allocation parameter, the method further includes:

[0170] When the sixth signal does not reach the lower limit of the third performance, the first device increases the second transmit power to obtain an adjusted second transmit power; the sixth signal is obtained based on the second transmit power and the adjusted second power allocation parameter.

[0171] Specifically, the sixth signal is obtained based on the second transmit power and the adjusted second power allocation parameter, that is, the sixth signal is obtained based on (P1, pa1).

[0172] In the case where the sixth signal does not reach the lower limit of the third performance, that is, pf isac (P1, pa1)<Pf0, it is necessary to continue to increase the second transmission power to improve the synaesthesia performance, that is, set P=P+ε1, ε1 is the step size of power adjustment.

[0173] In the above implementation, an initial second transmission power and a second power allocation parameter are obtained, and based on the needs of actual services and scenarios, the total transmission power and the power allocation of signals with different functions are adjusted, that is, appropriate transmission power and power allocation parameters are selected to take into account both communication performance and perception performance.

[0174] In summary, the solution of the embodiments of the present application adopts flexible power allocation adjustment to adapt to changing channel conditions to meet various performance indicators of perception and communication.

[0175] Optionally, 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.

[0176] Optionally, the process of the method is as follows Figure 4As shown, in the case of a single-station ISAC, that is, when the radar is self-transmitting and self-receiving, the sensing receiving end on the left and the ISAC transmitting end are the same device, and there is no need to execute the process on the left.

[0177] Specifically, since the single-station sensing is self-transmitting and self-receiving, there is no need for interaction of sensing related parameters.

[0178] Optionally, when the first performance is a communication performance, the method further includes:

[0179] The first device receives first indication information fed back by the second device, where the first indication information is used to indicate a first performance indicator corresponding to the first signal, and the first device determines whether the first signal meets the first performance based on the first indication information; or

[0180] The first device receives first indication information fed back by the second device, where the first indication information is used to indicate whether the first signal meets the first performance; or,

[0181] In the case where the second performance is a communication performance, the method further includes:

[0182] The first device receives first indication information fed back by the second device, where the first indication information is used to indicate a second performance indicator corresponding to the first signal, and the first device determines whether the first signal meets the second performance indicator based on the first indication information; or

[0183] The first device receives first indication information fed back by the second device, where the first indication information is used to indicate whether the first signal meets the second performance.

[0184] Specifically, the communication-related performance indicators (such as pfc0, pfc1) and the feedback cycle need to be configured by the sending side (usually the access network device (such as the base station)) to the communication receiving side (usually the terminal), for example, through the broadcast signaling master information block (Master Information Block, MIB), system information block (System Information Block, SIB), media access control element (Media Access Control Control Element, MAC CE), or downlink control information (Downlink Control Information, DCI), dedicated (dedicated) radio resource control (Radio Resource Control, RRC) and other configurations.

[0185] Optionally, the communication receiving side, ie, the second device, needs to carry first indication information through uplink control information (UCI), pilot or uplink data, etc., to feed back information on communication performance.

[0186] Optionally, when the first device includes only a transmitting end of a radar, and the first performance is a perception performance, the method further includes:

[0187] The first device receives second indication information fed back by the second device, where the second indication information is used to indicate a first performance indicator corresponding to the first signal; the first device determines whether the first signal meets the first performance based on the second indication information; or

[0188] The first device receives second indication information fed back by a second device, where the second indication information is used to indicate whether the first signal meets the first performance; or,

[0189] In the case where the first device only includes a transmitting end of a radar, and the second performance is a perception performance, the method further includes:

[0190] The first device receives second indication information fed back by the second device, where the second indication information is used to indicate a second performance indicator corresponding to the first signal, and the first device determines whether the first signal meets the second performance based on the second indication information; or

[0191] The first device receives second indication information fed back by the second device, where the second indication information is used to indicate whether the first signal meets the second performance.

[0192] Specifically, since multi-station sensing is A sending and B receiving, the interaction of related sensing parameters is required. When it comes to judging whether the sensing performance meets the requirements, the sending side needs to obtain information about whether the sensing performance meets the requirements through feedback from the sensing receiving side. One way is that the sensing receiving side directly sends the radar sensing performance information to the sensing sending side, which can be pf radar The specific value of may also be a second indication information, such as an indication information of 1 bit size, indicating that pf radar (P, pa) and pfc0. Another way is that the sensing receiving side can: (1) report the radar sensing performance information to the sensing function network element, and the sensing function network element sends the sensing control / configuration information to the sensing sending side to adjust the power configuration. (2) Report the radar sensing measurement quantity to the sensing function network element, and the sensing function network element calculates the radar sensing performance and sends the sensing control / configuration information to the sensing sending side to adjust the power configuration.

[0193] For communication-related indicators, please refer to the aforementioned embodiments, which will not be described in detail here.

[0194] Optionally, in the case where the first device only includes a transmitting end of a radar, the method further includes:

[0195] The first device receives third indication information fed back by the second device, where the third indication information is used to indicate a third performance indicator corresponding to the first signal, and the first device determines whether the first signal meets the third performance based on the third indication information; or

[0196] The first device receives third indication information fed back by the second device, where the third indication information is used to indicate whether the first signal meets the third performance.

[0197] Specifically, if the single-station sensing is self-transmitting and self-receiving, there is no need to sense the interaction of related parameters.

[0198] The feedback cycle of the performance indicators related to synaesthesia (such as pf0, pf1) needs to be configured by the sending side (usually the base station) to the communication receiving side (usually the terminal), which can be configured through broadcast signaling MIB, SIB, MAC CE, or DCI, dedicated RRC, etc.

[0199] The communication receiving side needs to feed back information about the communication performance through the third indication information. The third indication information can be implemented, for example, through UCI, pilot or uplink data.

[0200] In the case of multiple stations, since the ISAC system is a multi-station perception system where A sends and B receives, the interaction of relevant parameters needs to be perceived. When it comes to judging whether the synaesthesia performance meets the requirements, the sending side needs to first obtain the perception performance information required for calculating the synaesthesia performance through the feedback from the perception receiving side. Secondly, the sending side needs to obtain the communication performance information required for calculating the synaesthesia performance through the feedback from the communication receiving side.

[0201] Optionally, in the ISAC system, there are three working states, and each state has different requirements for feedback from the receiving side.

[0202] State I: Communication state.

[0203] When in the communication state, only the communication performance indicators need to be fed back, and the feedback can be provided in accordance with the feedback method for serving the communication function in the existing protocol.

[0204] State II: Perception state.

[0205] When in the perception state, the communication performance indicators are not concerned, and only the perception performance indicators need to be fed back through a direct / indirect link between the sending side and the perception receiving side.

[0206] State III: Communication + perception state.

[0207] When in the communication + perception state, both communication performance indicators and perception performance indicators require feedback.

[0208] Optionally, the ISAC system can trigger different feedbacks on demand according to its own working status to reduce feedback overhead. For example, a 1-bit message can be used to explicitly indicate to the communication receiving side whether the communication performance index needs to be fed back, and a 1-bit message can be used to explicitly indicate to the perception receiving side whether the perception performance index needs to be fed back. It can also be implicitly indicated by using a pilot pulse / pilot sequence.

[0209] The power allocation is adjusted based on the feedback information. When the feedback frequency is high, the power allocation adjustment is also frequent, and the convergence speed to the working area of ​​synaesthesia performance balance is fast, but the feedback overhead is large; when the feedback frequency is low, the power allocation converges slowly and the feedback overhead is small. The communication feedback cycle T here is fc and the perception feedback cycle T fr The feedback frequency can be dynamically determined by the sending device according to the channel change status or the relative speed of the target tracked by the radar, or it can be predefined by the protocol. fc and T fr The values ​​of can be the same or different. fc and T fr The sending side device can be configured to the communication receiving side device and the perception receiving side device respectively.

[0210] In the above implementation, information feedback of the receiving end is achieved through signaling interaction, and the transmission power or power allocation parameters can be adjusted based on the feedback information, that is, appropriate transmission power and power allocation parameters are selected to take into account both communication performance and perception performance.

[0211] In one embodiment, for a single-station ISAC system or a multi-station ISAC system, assuming that the performance of the communication system needs to be prioritized, the initial transmission power allocation needs to give priority to the communication performance index.

[0212] initialization:

[0213] The sending side selects the initial global transmit power value P0. Assume that the initial transmit power configuration is:

[0214] pa0={p s , p c}, p s , p c ≥0, p s +p c =1

[0215] In fact, pa0 defines the allocation ratio of P0 between perception and communication signals. The perception performance under the initial configuration is pf radar (P0, pa0), the communication performance under the initial configuration is pf comm (P0, pa0).

[0216] Step 1 (divided into the following two cases):

[0217] 1-1, when pf comm When (P0, pa0) < pfc0, the communication performance does not meet the requirements. At this time, the performance is improved by adjusting the global second transmission power. Assuming ε0>0 is the step size of power adjustment, until P1 = P0 + a×, P1 ≤ P max ,,a∈{0,N +}, and pf comm When (P1, pa0) ≥ pfc0, go to step 2. Where a represents the number of adjustments.

[0218] 1-2, when pf comm When (P0, pa0) ≥ pfc0, the communication performance meets the requirement, P1 = P0, and enters STEP-2.

[0219] Step 2:

[0220] At this point, pf is satisfied comm (P1, pa0) ≥ pfc0, the communication performance meets the requirements, and the performance of radar perception needs to be considered, which is divided into the following situations:

[0221] 2-1. When pfr0≤pf radar When (P1, pa0)≤pfr1, the communication performance and radar perception performance both meet the requirements, and the current power configuration (P1, pa0) is used.

[0222] 2-2 (corresponding to 1-1), if pf radar (P1, pa0)<pfr0. Since the communication performance has just reached the standard under the initial power allocation at this time, it is necessary to continue to increase the global power boost perception performance, that is, set P2=P1+ε1, ε1 is the step size of power adjustment.

[0223] 2-3 (corresponding to 1-2) when pf radar When (P1, pa0) ≥ pfr1, the radar perception performance overflows. At this time, the global second transmission power can be reduced. When P2 = P1-b×ε0, b∈{0, N +}, and pf comm When (P2, pa0) ≥ pfc0, use the power configuration (P2, pa0), otherwise still use the current power configuration (P1, pa0). b represents the number of adjustments.

[0224] 2-4 (corresponding to 1-2), when pf radar When (P1, pa0) < pfr0, the radar perception performance does not meet the requirements, and the communication performance may overflow. At this time, the radar perception performance is improved by adjusting the power allocation. That is, the power allocation is adjusted to pa1 = {p s +c×δ0,p c -c×δ0}, δ0 is the step size of power ratio adjustment, and c is the number of adjustments. radar (P1, pa1) ≥ pfr0 and pf comm When (P1, pa1) ≥ pfc0, the communication and perception performances meet the requirements, and the power configuration (P1, pa1) is adopted. In another case, when the power allocation reaches pa2 = {p s +(c-1)×δ0,p c -(c-1)×δ0}, pf radar (P1, pa2)<pfr0 and pf comm (P1, pa2) ≥ pfc0, and when the power allocation reaches pa2 = {p s +c×δ0,p c -c×δ0}, pf radar (P1, pa2)<pfr0 and pf comm (P1, pa2)<pfc0, which means that simply adjusting the power allocation cannot meet the needs of communication and perception. At this time, it is necessary to further increase the second transmission power and enter step 3.

[0225] Step 3: Current power configuration (P1, pa2), increase the global second transmission power until P3 = P1 + d × ε0, P3 ≤ P max , ,d∈{0,N +}, and pf radar (P3, pa2) ≥ pfr0. Where d represents the number of adjustments.

[0226] In one embodiment, for a single-station ISAC system or a multi-station ISAC system, assuming that the ISAC system needs to give priority to ensuring the performance of the perception system, the initial transmission power allocation needs to give priority to the perception performance index.

[0227] initialization:

[0228] The sending side selects the initial global transmit power value P0. Assume that the initial transmit power configuration is:

[0229] pa0={p s , p c}, p s , p c ≥0, p s +pc =1

[0230] In fact, pa0 defines the allocation ratio of P0 between perception and communication signals. The perception performance under the initial configuration is pf radar (P0, pa0), the communication performance under the initial configuration is pf comm (P0, pa0).

[0231] Step 1 (divided into the following two cases):

[0232] 1-1, when pf radar When (P0, pa0) < pfr0, the perceived performance does not meet the requirements, and the performance is improved by adjusting the global second transmission power. Assuming ε0>0 is the step size of power adjustment, until P1 = P0 + a × ε0, P1 ≤ P max ,,a∈{0,N +}, and pf radar When (P1, pa0) ≥ pfr0, go to step 2. Where a represents the number of adjustments. 1-2. When pf radar When (P0, pa0)≥pfr0, the perception performance meets the requirement, P1=P0, and go to step 2.

[0233] Step 2:

[0234] At this point, pf is satisfied radar (P1, pa0) ≥ pfr0, the perception performance meets the requirements, and the communication performance needs to be considered, which is discussed in the following situations.

[0235] 2-1. When pfc0≤pf comm (P1, pa0)≤pfc1, the communication performance and radar perception performance both meet the requirements, and the current power configuration (P1, pa0) is used.

[0236] 2-2 (corresponding to 1-1), if pf comm (P1, pa0)<pfc0. Since the perceived performance has just reached the standard under the initial power allocation at this time, it is necessary to continue to increase the global second transmission power to improve the communication performance, that is, set P2=P1+ε1, ε1 is the step size of power adjustment.

[0237] 2-3 (corresponding to 1-2), when pf comm When (P1, pa0) ≥ pfc1, the radar perception performance overflows. At this time, the global second transmission power can be reduced. When P2 = P1-b×ε0, b∈{0, N +}, and pf radarWhen (P2, pa0) ≥ pfr0, use the power configuration (P2, pa0), otherwise still use the current power configuration (P1, pa0). Where b represents the number of adjustments.

[0238] 2-4 (corresponding to 1-2), when pf comm When (P1, pa0) < pfc0, the communication performance does not meet the demand, and the perception performance may overflow. At this time, the communication performance is improved by adjusting the power allocation parameters. That is, the power allocation parameters are adjusted to pa1 = {p s +c×δ0,p c -c×δ0}, δ0 is the step size of power ratio adjustment, and c is the number of adjustments. radar (P1, pa1) ≥ pfr0 and pf comm When (P1, pa1) ≥ pfc0, the communication and perception performances meet the requirements, and the power configuration (P1, pa0) is adopted. In another case, when the power allocation reaches pa2 = {p s +(c-1)×δ0,p c -(c-1)×δ0}, pf comm (P1, pa2)<pfc0 and pf radar (P1, pa2) ≥ pfr0, and when the power allocation reaches pa2 = {p s +c×δ0,p c -c×δ0}, pf comm (P1, pa2)<pfc0 and pf radar (P1, pa2)<pfr0, which means that simply adjusting the power allocation cannot meet the needs of communication and perception. At this time, it is necessary to further increase the second transmission power and enter step 3.

[0239] STEP-3:

[0240] The current power configuration (P1, pa2) increases the global second transmission power until P3 = P1 + d × ε0 is found, P3 ≤ P max , d∈{0,N +}, and pf comm (P3, pa2) ≥ pfc0, where d represents the number of adjustments.

[0241] Figure 5 FIG. 2 is a flow chart of the power allocation method of the multi-antenna ISAC provided in the embodiment of the present application. Figure 5 As shown, the method of this embodiment includes:

[0242] Step 201: A second device receives a first signal sent by a first device, where the first signal is sent based on a first transmission power and a first power allocation parameter, wherein the first power allocation parameter is used to allocate transmission power of a signal that meets requirements of a first performance and a second performance or meets requirements of a third performance; the first performance, the second performance, and the third performance correspond to signals with different functions.

[0243] Optionally, the first performance is a communication performance, and the second performance is a perception performance; or,

[0244] The first performance is a perception performance, and the second performance is a communication performance.

[0245] Optionally, the third performance is communication and perception performance.

[0246] Optionally, when the first performance is a communication performance, the method further includes:

[0247] The second device feeds back first indication information to the first device; the first indication information is used to indicate a first performance indicator corresponding to the first signal; or, the first indication information is used to indicate whether the first signal meets the first performance; or,

[0248] In the case where the second performance is a communication performance, the method further includes:

[0249] The second device feeds back first indication information to the first device; the first indication information is used to indicate a second performance indicator corresponding to the first signal; or, the first indication information is used to indicate whether the first signal meets the second performance.

[0250] Optionally, 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.

[0251] Optionally, when the first device includes only a transmitting end of a radar, and the first performance is a perception performance, the method further includes:

[0252] The second device feeds back second indication information to the first device; the second indication information is used to indicate a first performance indicator corresponding to the first signal; or, the second indication information is used to indicate whether the first signal meets the first performance; or,

[0253] In the case where the first device only includes a transmitting end of a radar, and the second performance is a perception performance, the method further includes:

[0254] The second device feeds back second indication information to the first device; the second indication information is used to indicate a second performance indicator corresponding to the first signal; or, the second indication information is used to indicate whether the first signal meets the second performance.

[0255] Optionally, in the case where the first device only includes a transmitting end of a radar, the method further includes:

[0256] The second device feeds back third indication information to the first device, where the third indication information is used to indicate a third performance indicator corresponding to the first signal; or, the third indication information is used to indicate whether the first signal meets the third performance.

[0257] The specific implementation process and technical effects of the method of this embodiment are similar to those in the first device side method embodiment. For details, please refer to the detailed introduction in the first device side method embodiment, and no further details will be given here.

[0258] The power allocation method of the ISAC provided in the embodiment of the present application can be executed by the power allocation device of the ISAC. In the embodiment of the present application, the power allocation device of the ISAC is taken as an example to illustrate the power allocation method of the ISAC by the power allocation device of the ISAC provided in the embodiment of the present application.

[0259] Figure 6 FIG. 1 is one of the structural diagrams of the power distribution device of the ISAC provided in the embodiment of the present application. Figure 6 As shown, the power distribution device of the ISAC provided in this embodiment includes:

[0260] An acquisition module 610 is used to acquire a first transmission power and a first power allocation parameter;

[0261] The sending module 620 is used to send a first signal to a second device based on the first sending power and the first power allocation parameter; wherein the first power allocation parameter is used to allocate the sending power of a signal that meets the requirements of the first performance and the second performance or meets the requirements of the third performance; the first performance, the second performance, and the third performance correspond to signals with different functions.

[0262] Optionally, the first signal is obtained by adding symbols of a first perceptual pilot and data symbols in the time-frequency domain, the number of the first perceptual pilot is one, or the first perceptual pilot is obtained by superimposing multiple different second perceptual pilots, and different second perceptual pilots correspond to different antenna ports.

[0263] Optionally, the acquisition module 610 is specifically configured to:

[0264] Acquire a second transmit power and a second power allocation parameter;

[0265] When the second signal meets the requirement of the first performance and the second signal exceeds the upper limit of the requirement of the second performance, reducing the second transmit power to obtain the first transmit power; the first power allocation parameter is the second power allocation parameter;

[0266] The second signal is obtained based on the second transmission power and the second power allocation parameter.

[0267] Optionally, the acquisition module 610 is specifically configured to:

[0268] Acquire a second transmit power and a second power allocation parameter;

[0269] When the second signal meets the first performance requirement and the second signal does not reach the lower limit of the second performance requirement, adjust the second power allocation parameter to obtain the first power allocation parameter; the first transmit power is the second transmit power;

[0270] The second signal is obtained based on the second transmission power and the second power allocation parameter.

[0271] Optionally, the acquisition module 610 is specifically configured to:

[0272] Acquire a second transmit power and a second power allocation parameter;

[0273] In the case where the second signal does not meet the first performance requirement, increasing the second transmit power to obtain an adjusted second transmit power; the second signal is determined based on the second transmit power and the second power allocation parameter;

[0274] When the third signal meets the requirement of the first performance and the third signal does not meet the lower limit of the requirement of the second performance, increase the adjusted second transmit power to obtain the first transmit power; the third signal is obtained based on the adjusted second transmit power and the second power allocation parameter;

[0275] When the third signal meets the first performance requirement and exceeds the upper limit of the second performance requirement, the adjusted second transmission power is reduced to obtain the first transmission power; and the first power allocation parameter is the second power allocation parameter.

[0276] Optionally, the acquisition module 610 is further configured to:

[0277] When the fourth signal meets the requirements of the first performance, the fourth signal does not reach the lower limit of the requirements of the second performance, and the fifth signal does not meet the requirements of the first performance and the second performance, increase the second transmit power to obtain the first transmit power; the fourth signal is obtained based on the second power allocation parameters and the second transmit power after the c-1th adjustment, and the fifth signal is obtained based on the second power allocation parameters and the second transmit power after the cth adjustment, where c is an integer greater than 1.

[0278] Optionally, the acquisition module 610 is specifically configured to:

[0279] Acquire a second transmit power and a second power allocation parameter;

[0280] When the second signal does not reach the lower limit of the third performance requirement, the first device adjusts the second power allocation parameter to obtain the first power allocation parameter; the first transmit power is the second transmit power;

[0281] When the second signal exceeds the upper limit of the third performance requirement, the first device reduces the adjusted second transmission power to obtain the first transmission power; and the first power allocation parameter is the second power allocation parameter;

[0282] The second signal is obtained based on the second transmission power and the second power allocation parameter.

[0283] Optionally, the acquisition module 610 is further configured to:

[0284] When the sixth signal does not reach the lower limit of the third performance, the second transmission power is increased to obtain an adjusted second transmission power; the sixth signal is obtained based on the second transmission power and the adjusted second power allocation parameter.

[0285] Optionally, the first performance is a communication performance, and the second performance is a perception performance; or,

[0286] The first performance is a perception performance, and the second performance is a communication performance.

[0287] Optionally, the third performance is communication and perception performance.

[0288] Optionally, when the first performance is communication performance, the acquisition module 610 is further configured to:

[0289] receiving first indication information fed back by a second device, where the first indication information is used to indicate a first performance indicator corresponding to the first signal, and determining whether the first signal meets the first performance based on the first indication information; or,

[0290] receiving first indication information fed back by a second device, where the first indication information is used to indicate whether the first signal meets the first performance; or,

[0291] In the case where the second performance is a communication performance, the acquisition module 610 is further configured to:

[0292] receiving first indication information fed back by a second device, where the second indication information is used to indicate a first performance indicator corresponding to the first signal, and determining whether the first signal satisfies the second performance based on the first indication information; or,

[0293] Receive first indication information fed back by a second device, where the first indication information is used to indicate whether the first signal meets the second performance.

[0294] Optionally, 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.

[0295] Optionally, when the first device includes only a transmitting end of a radar and the first performance is a perception performance, the acquisition module 610 is further used to:

[0296] receiving second indication information fed back by a second device, where the second indication information is used to indicate a first performance indicator corresponding to the first signal, and determining whether the first signal meets the first performance based on the second indication information; or,

[0297] receiving second indication information fed back by a second device, where the second indication information is used to indicate whether the first signal meets the first performance; or,

[0298] In the case where the first device only includes a transmitting end of a radar, and the second performance is a perception performance, the acquisition module 610 is further used to:

[0299] receiving second indication information fed back by a second device, where the second indication information is used to indicate a second performance indicator corresponding to the first signal, and determining whether the first signal meets the second performance indicator based on the second indication information; or,

[0300] Second indication information fed back by a second device is received, where the second indication information is used to indicate whether the first signal meets the second performance.

[0301] Optionally, when the first device only includes a transmitting end of a radar, the acquiring module 610 is further used to:

[0302] receiving third indication information fed back by the second device, where the third indication information is used to indicate a third performance indicator corresponding to the first signal, and determining whether the first signal meets the third performance indicator based on the third indication information; or,

[0303] Receive third indication information fed back by the second device, where the third indication information is used to indicate whether the first signal meets the third performance.

[0304] The device of this embodiment can be used to execute the method of any one of the embodiments in the aforementioned first device side method embodiment. Its specific implementation process and technical effects are similar to those in the first device side method embodiment. For details, please refer to the detailed introduction in the first device side method embodiment, which will not be repeated here.

[0305] Figure 7 FIG. 2 is a second structural diagram of the power distribution device of the ISAC provided in the embodiment of the present application. Figure 7 As shown, the power distribution device of the ISAC provided in this embodiment includes:

[0306] The receiving module 710 is used to receive a first signal sent by a first device, wherein the first signal is sent based on a first transmission power and a first power allocation parameter, wherein the first power allocation parameter is used to allocate the transmission power of a signal that meets the requirements of the first performance and the second performance or meets the requirements of the third performance; the first performance, the second performance, and the third performance correspond to signals with different functions.

[0307] Optionally, the first signal is obtained by adding symbols of a first perceptual pilot and data symbols in the time-frequency domain, the number of the first perceptual pilot is one, or the first perceptual pilot is obtained by superimposing multiple second perceptual pilots, and different second perceptual pilots correspond to different antenna ports.

[0308] Optionally, the first performance is a communication performance, and the second performance is a perception performance; or,

[0309] The first performance is a perception performance, and the second performance is a communication performance.

[0310] Optionally, the third performance is communication and perception performance.

[0311] Optionally, the device further includes: a sending module 720;

[0312] In the case where the first performance is communication performance, the sending module 720 is used to feed back first indication information to the first device; the first indication information is used to indicate a first performance indicator corresponding to the first signal; or, the first indication information is used to indicate whether the first signal meets the first performance; or,

[0313] In the case where the second performance is communication performance, the sending module 720 is used to feed back first indication information to the first device; the first indication information is used to indicate a second performance indicator corresponding to the first signal; or, the first indication information is used to indicate whether the first signal meets the second performance.

[0314] Optionally, 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.

[0315] Optionally, when the first device only includes a transmitting end of a radar and the first performance is a perception performance, the sending module 720 is further used to feed back second indication information to the first device; the second indication information is used to indicate a first performance indicator corresponding to the first signal; or, the second indication information is used to indicate whether the first signal meets the first performance; or,

[0316] In the case where the first device only includes a transmitting end of a radar and the second performance is a perception performance, the sending module 720 is further used to feed back second indication information to the first device; the second indication information is used to indicate a second performance indicator corresponding to the first signal; or, the second indication information is used to indicate whether the first signal satisfies the second performance.

[0317] Optionally, in the case where the first device only includes a transmitting end of a radar, the sending module 720 is further used to feedback third indication information to the first device, wherein the third indication information is used to indicate a third performance indicator corresponding to the first signal; or, the third indication information is used to indicate whether the first signal meets the third performance.

[0318] The device of this embodiment can be used to execute the method of any one of the embodiments in the aforementioned second device side method embodiment. Its specific implementation process and technical effects are similar to those in the second device side method embodiment. For details, please refer to the detailed introduction in the second device side method embodiment, which will not be repeated here.

[0319] The power distribution device of the ISAC in the embodiment of the present application can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal, or it can be other devices other than a terminal. Exemplarily, the terminal can include but is not limited to the types of terminals 11 listed above, and other devices can be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiment of the present application.

[0320] The power distribution device of the ISAC provided in the embodiment of the present application can realize Figures 2 to 5The various processes implemented by the method embodiment and achieving the same technical effect are not described here to avoid repetition.

[0321] like Figure 8 As shown, the embodiment of the present application further provides a communication device 800, including a processor 801 and a memory 802, and the memory 802 stores a program or instruction that can be run on the processor 801. For example, when the communication device 800 is a terminal, the program or instruction is executed by the processor 801 to implement the various steps of the above-mentioned ISAC power allocation method embodiment, and can achieve the same technical effect. When the communication device 800 is a network side device, the program or instruction is executed by the processor 801 to implement the various steps of the above-mentioned ISAC power allocation method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0322] The embodiment of the present application also provides a network side device, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the following Figure 2 or Figure 5 The steps of the method embodiment shown. This network side device embodiment corresponds to the above network side device method embodiment, and each implementation process and implementation mode of the above method embodiment can be applied to this network side device embodiment and can achieve the same technical effect.

[0323] Specifically, the embodiment of the present application also provides a network side device. Fig. 9 As shown, the network side device 900 includes: an antenna 91, a radio frequency device 92, a baseband device 93, a processor 94 and a memory 95. The antenna 91 is connected to the radio frequency device 92. In the uplink direction, the radio frequency device 92 receives information through the antenna 91 and sends the received information to the baseband device 93 for processing. In the downlink direction, the baseband device 93 processes the information to be sent and sends it to the radio frequency device 92. The radio frequency device 92 processes the received information and sends it out through the antenna 91.

[0324] The method executed by the network-side device in the above embodiment may be implemented in the baseband device 93, which includes a baseband processor.

[0325] The baseband device 93 may include, for example, at least one baseband board on which a plurality of chips are arranged. Fig. 9 As shown, one of the chips is, for example, a baseband processor, which is connected to the memory 95 through a bus interface to call the program in the memory 95 to execute the network device operations shown in the above method embodiment.

[0326] The network side device may further include a network interface 96, which is, for example, a Common Public Radio Interface (CPRI).

[0327] Specifically, the network side device 900 of the embodiment of the present application further includes: instructions or programs stored in the memory 95 and executable on the processor 94, and the processor 94 calls the instructions or programs in the memory 95 to execute. Figure 6 or Figure 7 The methods executed by the modules shown achieve the same technical effects, and therefore will not be described here in detail to avoid repetition.

[0328] The embodiment of the present application also provides a terminal, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the following Figure 2 or Figure 5 The steps in the method embodiment shown. This terminal embodiment corresponds to the above-mentioned terminal side method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to this terminal embodiment and can achieve the same technical effect. Specifically, Fig.10 The hardware structure diagram of a terminal for implementing the embodiment of the present application is shown in FIG. The terminal 1000 includes but is not limited to: a radio frequency unit 1001, a network module 1002, an audio output unit 1003, an input unit 1004, a sensor 1005, a display unit 1006, a user input unit 1007, an interface unit 1008, a memory 1009, and at least some of the components in the processor 1010.

[0329] Those skilled in the art will appreciate that the terminal 1000 may also include a power source (such as a battery) for supplying power to various components, and the power source may be logically connected to the processor 1010 through a power management system, thereby implementing functions such as managing charging, discharging, and power consumption management through the power management system. Fig.10 The terminal structure shown in the figure does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently, which will not be described in detail here.

[0330] It should be understood that in the embodiment of the present application, the input unit 1004 may include a graphics processing unit (GPU) 10041 and a microphone 10042, and the graphics processing unit 10041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 1006 may include a display panel 10061, and the display panel 10061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1007 includes at least one of a touch panel 10071 and other input devices 10072. The touch panel 10071 is also called a 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, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.

[0331] In the embodiment of the present application, after receiving the downlink data from the network side device, the RF unit 1001 can transmit it to the processor 1010 for processing; in addition, the RF unit 1001 can send the uplink data to the network side device. Generally, the RF unit 1001 includes but is not limited to an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0332] The memory 1009 can be used to store software programs or instructions and 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 area may store an operating system, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.), etc. In addition, the memory 1009 may include a volatile memory or a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM) and a direct memory bus random access memory (DRRAM). The memory 1009 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0333] The processor 1010 may include one or more processing units; optionally, the processor 1010 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and application programs, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It is understandable that the modem processor may not be integrated into the processor 1010.

[0334] Among them, the radio frequency unit 1001 is used to receive a first signal sent by a first device, wherein the first signal is sent based on a first transmission power and a first power allocation parameter, wherein the first power allocation parameter is used to allocate the transmission power of a signal that meets the requirements of the first performance and the second performance or meets the requirements of the third performance; the first performance, the second performance, and the third performance correspond to signals with different functions.

[0335] Optionally, the first signal is obtained by adding symbols of a first perceptual pilot and data symbols in the time-frequency domain, the number of the first perceptual pilot is one, or the first perceptual pilot is obtained by superimposing multiple different second perceptual pilots, and different second perceptual pilots correspond to different antenna ports.

[0336] Optionally, the first performance is a communication performance, and the second performance is a perception performance; or,

[0337] The first performance is a perception performance, and the second performance is a communication performance.

[0338] Optionally, the third performance is communication and perception performance.

[0339] Optionally, when the first performance is communication performance, the radio frequency unit 1001 is used to feed back first indication information to the first device; the first indication information is used to indicate a first performance indicator corresponding to the first signal; or, the first indication information is used to indicate whether the first signal meets the first performance; or,

[0340] When the second performance is communication performance, the radio frequency unit 1001 is used to feedback first indication information to the first device; the first indication information is used to indicate a second performance indicator corresponding to the first signal; or, the first indication information is used to indicate whether the first signal meets the second performance.

[0341] Optionally, 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.

[0342] Optionally, when the first device only includes a transmitting end of a radar and the first performance is a perception performance, the radio frequency unit 1001 is further used to feed back second indication information to the first device; the second indication information is used to indicate a first performance indicator corresponding to the first signal; or, the second indication information is used to indicate whether the first signal meets the first performance; or,

[0343] In the case where the first device only includes a transmitting end of a radar and the second performance is a perception performance, the radio frequency unit 1001 is further used to feed back second indication information to the first device; the second indication information is used to indicate a second performance indicator corresponding to the first signal; or, the second indication information is used to indicate whether the first signal meets the second performance.

[0344] Optionally, in the case where the first device only includes a transmitting end of the radar, the radio frequency unit 1001 is further used to feed back third indication information to the first device, where the third indication information is used to indicate a third performance indicator corresponding to the first signal.

[0345] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the method embodiment and achieve the same or corresponding technical effect. To avoid repetition, it will not be repeated here.

[0346] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, each process of the above-mentioned ISAC power allocation method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0347] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk. In some examples, the readable storage medium may be a non-transient readable storage medium.

[0348] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned ISAC power allocation method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0349] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0350] The embodiment of the present application further provides a computer program / program product, which is stored in a storage medium, and is executed by at least one processor to implement the various processes of the above-mentioned ISAC power allocation method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0351] An embodiment of the present application also provides a communication system, including: a first device and a second device, wherein the first device can be used to execute the steps of the ISAC power allocation method as described above, and the second device can be used to execute the steps of the ISAC power allocation method as described above.

[0352] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0353] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general hardware platform, and of course, can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, disk, CD, etc.), including several instructions to enable a terminal or a network-side device to execute the methods described in each embodiment of the present application.

[0354] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of the present application and the scope of protection of the claims, and these implementation methods are all within the protection of the present application.

Claims

1. A power distribution method for an ISAC system, characterized in that: include: The first device obtains a first transmission power and a first power allocation parameter; The first device sends a first signal to a second device based on the first transmit power and the first power allocation parameter; The first power allocation parameter is used to allocate the transmission power of a signal that meets the requirements of the first performance and the second performance or meets the requirements of the third performance; the first performance, the second performance, and the third performance correspond to signals with different functions.

2. The power allocation method of ISAC according to claim 1, characterized in that: The first signal is obtained by adding symbols based on the first perceptual pilot and data symbols in the time-frequency domain, the number of the first perceptual pilot is one, or the first perceptual pilot is obtained by superimposing multiple different second perceptual pilots, and different second perceptual pilots correspond to different antenna ports.

3. The power allocation method of ISAC according to claim 1 or 2, characterized in that: The first device acquires a first transmission power and a first power allocation parameter, including: Acquire a second transmit power and a second power allocation parameter; When the second signal meets the requirement of the first performance and the second signal exceeds the upper limit of the requirement of the second performance, the first device reduces the second transmit power to obtain the first transmit power; and the first power allocation parameter is the second power allocation parameter; The second signal is obtained based on the second transmission power and the second power allocation parameter.

4. The power allocation method of ISAC according to claim 1 or 2, characterized in that: The first device acquires a first transmission power and a first power allocation parameter, including: Acquire a second transmit power and a second power allocation parameter; When the second signal meets the requirement of the first performance and the second signal does not reach the lower limit of the requirement of the second performance, the first device adjusts the second power allocation parameter to obtain the first power allocation parameter; the first transmit power is the second transmit power; The second signal is obtained based on the second transmission power and the second power allocation parameter.

5. The power allocation method of ISAC according to claim 1 or 2, characterized in that: The first device acquires a first transmission power and a first power allocation parameter, including: Acquire a second transmit power and a second power allocation parameter; When the second signal does not meet the requirement of the first performance, the first device increases the second transmit power to obtain an adjusted second transmit power; the second signal is obtained based on the second transmit power and the second power allocation parameter; When the third signal meets the requirement of the first performance and the third signal does not reach the lower limit of the requirement of the second performance, the first device increases the adjusted second transmit power to obtain the first transmit power; the third signal is obtained based on the adjusted second transmit power and the second power allocation parameter; When the third signal meets the first performance requirement and exceeds the upper limit of the second performance requirement, 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.

6. The power allocation method of ISAC according to claim 4, characterized in that: After the first device adjusts the second power allocation parameter, the method further includes: When the fourth signal meets the requirements of the first performance, the fourth signal does not reach the lower limit of the requirements of the second performance, and the fifth signal does not meet the requirements of the first performance and the second performance, the first device increases the second transmit power to obtain the first transmit power; the fourth signal is obtained based on the second power allocation parameters and the second transmit power after the c-1th adjustment, and the fifth signal is obtained based on the second power allocation parameters and the second transmit power after the cth adjustment, where c is an integer greater than 1.

7. The power allocation method of ISAC according to claim 1 or 2, characterized in that: The first device acquires a first transmission power and a first power allocation parameter, including: Acquire a second transmit power and a second power allocation parameter; When the second signal does not reach the lower limit of the third performance requirement, the first device adjusts the second power allocation parameter to obtain the first power allocation parameter; the first transmit power is the second transmit power; When the second signal exceeds the upper limit of the third performance requirement, the first device reduces the adjusted second transmission power to obtain the first transmission power; and the first power allocation parameter is the second power allocation parameter; The second signal is obtained based on the second transmission power and the second power allocation parameter.

8. The power allocation method of ISAC according to claim 7, characterized in that: After the first device adjusts the second power allocation parameter to obtain the first power allocation parameter, the method further includes: When the sixth signal does not reach the lower limit of the third performance, the first device increases the second transmit power to obtain an adjusted second transmit power; the sixth signal is obtained based on the second transmit power and the adjusted second power allocation parameter.

9. The power allocation method of ISAC according to any one of claims 1 to 6, characterized in that: The first performance is a communication performance, and the second performance is a perception performance; or, The first performance is a perception performance, and the second performance is a communication performance.

10. The power allocation method of ISAC according to claim 7 or 8, characterized in that: The third capability is communication and perception capability.

11. The power allocation method of ISAC according to any one of claims 1 to 6, characterized in that: In the case where the first performance is a communication performance, the method further includes: The first device receives first indication information fed back by the second device, where the first indication information is used to indicate a first performance indicator corresponding to the first signal, and the first device determines whether the first signal meets the first performance based on the first indication information; or The first device receives first indication information fed back by the second device, where the first indication information is used to indicate whether the first signal meets the first performance; or, In the case where the second performance is a communication performance, the method further includes: The first device receives first indication information fed back by the second device, where the first indication information is used to indicate a second performance indicator corresponding to the first signal, and the first device determines whether the first signal meets the second performance indicator based on the first indication information; or The first device receives first indication information fed back by the second device, where the first indication information is used to indicate whether the first signal meets the second performance.

12. The power allocation method of ISAC according to any one of claims 1 to 11, characterized in that: 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.

13. The power allocation method of ISAC according to any one of claims 1 to 6, characterized in that: In the case where the first device only includes a transmitting end of a radar, and the first performance is a perception performance, the method further includes: The first device receives second indication information fed back by the second device, where the second indication information is used to indicate a first performance indicator corresponding to the first signal, and the first device determines whether the first signal meets the first performance based on the second indication information; or The first device receives second indication information fed back by a second device, where the second indication information is used to indicate whether the first signal meets the first performance; or, In the case where the first device only includes a transmitting end of a radar, and the second performance is a perception performance, the method further includes: The first device receives second indication information fed back by the second device, where the second indication information is used to indicate a second performance indicator corresponding to the first signal, and the first device determines whether the first signal meets the second performance based on the second indication information; or The first device receives second indication information fed back by the second device, where the second indication information is used to indicate whether the first signal meets the second performance.

14. The power allocation method of ISAC according to claim 7 or 8, characterized in that: In the case where the first device only includes a transmitting end of the radar, the method further includes: The first device receives third indication information fed back by the second device, where the third indication information is used to indicate a third performance indicator corresponding to the first signal, and the first device determines whether the first signal meets the third performance based on the third indication information; or The first device receives third indication information fed back by the second device, where the third indication information is used to indicate whether the first signal meets the third performance.

15. A power allocation method for ISAC, characterized in that: include: The second device receives a first signal sent by the first device, where the first signal is sent based on a first transmission power and a first power allocation parameter, wherein the first power allocation parameter is used to allocate transmission power of a signal that meets requirements of first performance and second performance or meets requirements of third performance; and the first performance, the second performance, and the third performance correspond to signals with different functions.

16. The power allocation method of ISAC according to claim 15, characterized in that: The first signal is obtained by adding symbols based on the first perceptual pilot and data symbols in the time-frequency domain, the number of the first perceptual pilot is one, or the first perceptual pilot is obtained by superimposing multiple different second perceptual pilots, and different second perceptual pilots correspond to different antenna ports.

17. The power allocation method of ISAC according to claim 15 or 16, characterized in that: The first performance is a communication performance, and the second performance is a perception performance; or, The first performance is a perception performance, and the second performance is a communication performance.

18. The power allocation method of ISAC according to claim 15 or 16, characterized in that: The third capability is communication and perception capability.

19. The power allocation method of ISAC according to any one of claims 15 to 18, characterized in that: In the case where the first performance is a communication performance, the method further includes: The second device feeds back first indication information to the first device; the first indication information is used to indicate a first performance indicator corresponding to the first signal; or, the first indication information is used to indicate whether the first signal meets the first performance; or, In the case where the second performance is a communication performance, the method further includes: The second device feeds back first indication information to the first device; the first indication information is used to indicate a second performance indicator corresponding to the first signal; or, the first indication information is used to indicate whether the first signal meets the second performance.

20. The power allocation method of ISAC according to any one of claims 15 to 19, characterized in that: 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.

21. The power allocation method of ISAC according to any one of claims 15 to 20, characterized in that: In the case where the first device only includes a transmitting end of a radar, and the first performance is a perception performance, the method further includes: The second device feeds back second indication information to the first device; the second indication information is used to indicate a first performance indicator corresponding to the first signal; or, the second indication information is used to indicate whether the first signal meets the first performance; or, In the case where the first device only includes a transmitting end of a radar, and the second performance is a perception performance, the method further includes: The second device feeds back second indication information to the first device; the second indication information is used to indicate a second performance indicator corresponding to the first signal; or, the second indication information is used to indicate whether the first signal meets the second performance.

22. The power allocation method of ISAC according to any one of claims 15 to 21, characterized in that: In the case where the first device only includes a transmitting end of the radar, the method further includes: The second device feeds back third indication information to the first device, where the third indication information is used to indicate a third performance indicator corresponding to the first signal; or, the third indication information is used to indicate whether the first signal meets the third performance.

23. A power distribution device for ISAC, characterized in that: include: An acquisition module, used to acquire a first transmission power and a first power allocation parameter; A sending module, used to send a first signal to a second device based on the first sending power and the first power allocation parameter; wherein the first power allocation parameter is used to allocate the sending power of a signal that meets the requirements of a first performance and a second performance or meets the requirements of a third performance; the first performance, the second performance, and the third performance correspond to signals with different functions.

24. A power distribution device for ISAC, characterized in that: include: A receiving module is used to receive a first signal sent by a first device, wherein the first signal is sent based on a first transmission power and a first power allocation parameter, wherein the first power allocation parameter is used to allocate the transmission power of a signal that meets the requirements of a first performance and a second performance or meets the requirements of a third performance; the first performance, the second performance, and the third performance correspond to signals with different functions.

25. A first device, characterized in that: The method comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the power allocation method of the ISAC as described in any one of claims 1 to 14 are implemented.

26. A second device, characterized in that: It comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the power allocation method of the ISAC as described in any one of claims 15 to 22 are implemented.

27. A readable storage medium, characterized in that: The readable storage medium stores a program or instruction, and when the program or instruction is executed by the processor, it implements the power allocation method of the ISAC as described in any one of claims 1 to 14, or implements the steps of the power allocation method of the ISAC as described in any one of claims 15 to 22.

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