Signal transmission method and device, terminal and network side equipment

Abstract

The invention discloses a signal transmission method and device, a terminal and network side equipment, and belongs to the technical field of communication, and the signal transmission method comprises the steps that the terminal measures a first signal sent by the network side equipment, and obtains the receiving power of a sensing target association path; the terminal determines the sending power of a second signal according to the receiving power of the perception target association path; and the terminal sends the second signal to the network side device by using the sending power.

Description

Technical Field

[0001] This application belongs to the field of communication technologies, and particularly relates to a signal transmission method, apparatus, terminal, and network-side device. Background Art

[0002] In addition to communication capabilities, future mobile communication systems such as B5G systems or 6G systems will also have sensing capabilities. The sensing capabilities mean that one or more devices with sensing capabilities can, through the transmission and reception of wireless signals, sense information such as the orientation, distance, and speed of a target object, or detect, track, identify, image, etc. a target object, event, or environment. In the future, with the deployment of small base stations with high-frequency large-bandwidth capabilities such as millimeter waves and terahertz in 6G networks, the sensing resolution will be significantly improved compared to centimeter waves, enabling the 6G network to provide more refined sensing services.

[0003] Currently, the New Radio (NR) protocol already supports an uplink power control method for communication services. However, the uplink power control method for wireless sensing or for communication and sensing integration is not yet clear. Summary of the Invention

[0004] Embodiments of this application provide a signal transmission method, apparatus, terminal, and network-side device to implement uplink power control for wireless sensing or for communication and sensing integration.

[0005] In a first aspect, a signal transmission method is provided. The method includes:

[0006] The terminal measures a first signal sent by the network-side device and obtains the received power of the path associated with the sensing target.

[0007] The terminal determines the transmission power of a second signal according to the received power of the path associated with the sensing target.

[0008] The terminal uses the transmission power to send the second signal to the network-side device.

[0009] In a second aspect, a signal transmission apparatus is provided, which is applied to a terminal and includes:

[0010] An acquisition module, configured to measure a first signal sent by the network-side device and obtain the received power of the path associated with the sensing target.

[0011] A first determination module, configured to determine the transmission power of a second signal according to the received power of the path associated with the sensing target.

[0012] A first transmission module, configured to use the transmission power to send the second signal to the network-side device.

[0013] In a third aspect, a signal transmission method is provided, which includes:

[0014] The network side device sends a first signal to the terminal;

[0015] The network side device receives a second signal sent by the terminal, and the transmission power adopted by the second signal is determined by the received power of the perceived target associated path obtained by the terminal through receiving the first signal.

[0016] In a fourth aspect, a signal transmission device is provided, which is applied to the network side device and includes:

[0017] A second transmission module, configured to send a first signal to the terminal;

[0018] A receiving module, configured to receive a second signal sent by the terminal, and the transmission power adopted by the second signal is determined by the received power of the perceived target associated path obtained by the terminal through receiving the first signal.

[0019] In a fifth aspect, a terminal is provided, which includes a processor and a memory. The memory stores a program or instruction that can run on the processor. When the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0020] In a sixth aspect, a terminal is provided, which includes a processor and a communication interface. The processor is configured to measure a first signal sent by the network side device and obtain the received power of the perceived target associated path;

[0021] Determine the transmission power of the second signal according to the received power of the perceived target associated path;

[0022] Use the transmission power to send the second signal to the network side device.

[0023] In a seventh aspect, a network side device is provided, which includes a processor and a memory. The memory stores a program or instruction that can run on the processor. When the program or instruction is executed by the processor, the steps of the method described in the third aspect are implemented.

[0024] In an eighth aspect, a network side device is provided, which includes a processor and a communication interface. The communication interface is configured for the network side device to send a first signal to the terminal;

[0025] Receive a second signal sent by the terminal, and the transmission power adopted by the second signal is determined by the received power of the perceived target associated path obtained by the terminal through receiving the first signal.

[0026] In a ninth aspect, a communication system is provided, including: a terminal and a network-side device. The terminal can be used to execute the steps of the method described in the first aspect, and the network-side device can be used to execute the steps of the method described in the third aspect.

[0027] In a tenth aspect, a readable storage medium is provided. A program or instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the steps of the method described in the first aspect or the third aspect are implemented.

[0028] In an eleventh aspect, a chip is provided. The chip includes a processor and a communication interface. The communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the steps of the method described in the first aspect or the third aspect.

[0029] In a twelfth aspect, a computer program / program product is provided. The computer program / program product is stored in a storage medium, and the computer program / program product is executed by at least one processor to implement the steps of the method described in the first aspect or the third aspect.

[0030] In the embodiments of the present application, by determining the transmission power of the second signal according to the received power of the perceived target associated path obtained by measuring the first signal sent by the network-side device; then based on this transmission power, the second signal is sent to the network-side device; in this way, uplink power control for wireless sensing or communication-sensing integration can be achieved, ensuring the reliability of sensing. Description of the Drawings

[0031] Figure 1 is a block diagram of a wireless communication system to which the embodiments of the present application can be applied;

[0032] Figure 2 is a schematic diagram of different sensing modes of communication-sensing integration;

[0033] Figure 3 is one of the flow schematic diagrams of the signal transmission method in the embodiments of the present application;

[0034] Figure 4 is a multipath schematic diagram of the channel response in the first dimension;

[0035] Figure 5 is another flow schematic diagram of the signal transmission method in the embodiments of the present application;

[0036] Figure 6 is one of the module schematic diagrams of the signal transmission device in the embodiments of the present application;

[0037] Figure 7 is the structural schematic diagram of the terminal in the embodiments of the present application;

[0038] Figure 8 It is the second schematic diagram of the modules of the signal transmission device according to an embodiment of the present application;

[0039] Figure 9 It is the schematic structural diagram of the network-side device according to an embodiment of the present application;

[0040] Figure 10 It is the schematic structural diagram of the communication device according to an embodiment of the present application. Specific embodiments

[0041] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, rather than all, of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art shall fall within the protection scope of the present application.

[0042] The terms "first", "second", etc. in the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances 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 the same category, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "or" in the present application means at least one of the connected objects. For example, "A or B" covers three scenarios, namely, Scenario 1: including A and not including B; Scenario 2: including B and not including A; Scenario 3: including both A and B. The character " / " generally indicates an "or" relationship between the associated objects before and after.

[0043] The term "indication" in the present application can be either a direct indication (or an explicit indication) or an indirect indication (or an implicit indication). Among them, a direct indication can be understood as that the sender clearly informs the receiver of specific information, operations to be performed, or request results, etc. in the sent indication; an indirect indication can be understood as that the receiver determines the corresponding information according to the indication sent by the sender, or makes a judgment and determines the operations to be performed or request results, etc. according to the judgment result.

[0044] It should be noted that the technology described in the embodiments of this application is not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, and 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 this application are often used interchangeably, and the described technology can be used in the above-mentioned systems and radio technologies, as well as in other systems and radio technologies. The following description describes the New Radio (NR) system for example purposes, and the NR term is used in most of the following descriptions, but these technologies can also be applied to systems other than the NR system, such as the 6th Generation (6 th Generation, 6G) communication system.

[0045] Figure 1The block diagram of a wireless communication system to which the embodiments of the present application can be applied 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 personal computer, a laptop computer, a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), an augmented reality (AR), a virtual reality (VR) device, a robot, a wearable device, a flight vehicle, a vehicle user equipment (VUE), a shipborne device, a pedestrian user equipment (PUE), a smart home (home devices with wireless communication functions, such as refrigerators, TVs, washing machines or furniture, etc.), a game console, a personal computer (PC), a teller machine or a self-service machine, etc. Wearable devices include: smart watches, smart bracelets, smart earphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart ankle chains, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle user equipment can also be called a vehicle terminal, a vehicle controller, a vehicle module, a vehicle component, a vehicle chip or a vehicle unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network-side device 12 can include an access network device or a core network device. Among them, the access network device can also be called a radio access network (RAN) device, a radio access network function or a radio access network unit. The access network device can include a base station, a wireless local area network (WLAN) access point (AP) or a wireless fidelity (WiFi) node, etc.Among them, the base station can be referred to as Node B (NB), Evolved Node B (eNB), the next generation Node B (gNB), New Radio Node B (NR Node B), access point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), home Node B (HNB), home evolved Node B, Transmission Reception Point (TRP), or some other suitable term in the art. 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 this application, only the base station in the NR system is taken as an example for introduction, and the specific type of the base station is not limited.

[0046] The core network device may include, but is not limited to, at least one of the following: core network node, core network function, Mobility Management Entity (MME), Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (L-NEF), Binding Support Function (BSF), Application Function (AF), etc. It should be noted that in the embodiments of this application, only the core network devices in the NR system are taken as examples for introduction, and the specific types of core network devices are not limited.

[0047] The related technologies of the embodiments of this application are described as follows.

[0048] I. Communication and Sensing Integration

[0049] Future mobile communication systems, such as B5G systems or 6G systems, will not only have communication capabilities but also sensing capabilities. The sensing capabilities refer to one or more devices with sensing capabilities that can sense information such as the orientation, distance, and speed of a target object through the transmission and reception of wireless signals, or detect, track, identify, image, etc. a target object, event, or environment. In the future, with the deployment of small base stations with high-frequency band and large bandwidth capabilities such as millimeter waves and terahertz waves in the 6G network, the sensing resolution will be significantly improved compared to centimeter waves, enabling the 6G network to provide more refined sensing services. A typical sensing function and application scenario are shown in Table 1.

[0050] Table 1 Comparison table of typical sensing functions and application scenarios

[0051]

[0052] Communication and sensing integration (abbreviated as communication-sensing integration) means that in the same system, through spectrum sharing and hardware sharing, the integrated design of communication and sensing functions is realized. While the system is transmitting information, it can sense information such as orientation, distance, and speed, detect, track, and identify a target device or event. The communication system and the sensing system complement each other, achieving an improvement in overall performance and bringing a better service experience.

[0053] The integration of communication and radar is a typical application of communication-sensing integration (communication-sensing fusion). In the past, radar systems and communication systems were strictly separated due to different research objects and focuses of attention, and the two systems were studied independently in most scenarios. In fact, both radar and communication systems are typical ways of information transmission, acquisition, processing, and exchange, and there are many similarities in terms of working principles, system architectures, and frequency bands. The design of communication and radar integration has great feasibility, which is mainly reflected in the following aspects: First, both the communication system and the sensing system are based on the electromagnetic wave theory and use the transmission and reception of electromagnetic waves to complete information acquisition and transmission; Second, both the communication system and the sensing system have structures such as antennas, transmitters, receivers, and signal processors, and there is a large overlap in hardware resources; With the development of technology, there is also more and more overlap in their working frequency bands; In addition, there are similarities in key technologies such as signal modulation, reception detection, and waveform design. The integration of communication and radar systems can bring many advantages, such as cost savings, size reduction, power consumption reduction, spectrum efficiency improvement, and mutual interference reduction, thus improving the overall performance of the system.

[0054] According to the different sensing signal sending nodes and receiving nodes, it is divided into 6 basic sensing methods, as Figure 2 shown, specifically including:

[0055] (1) Base station echo sensing. In this sensing mode, base station A sends a sensing signal and performs sensing measurements by receiving the echo of the sensing signal.

[0056] (2) Air interface sensing between base stations. At this time, base station B receives the sensing signal sent by base station A and performs sensing measurements.

[0057] (3) Uplink air interface sensing. At this time, base station A receives the sensing signal sent by terminal A and performs sensing measurements.

[0058] (4) Downlink air interface sensing. At this time, terminal B receives the sensing signal sent by base station B and performs sensing measurements.

[0059] (5) Terminal echo sensing. At this time, terminal A sends a sensing signal and performs sensing measurements by receiving the echo of the sensing signal.

[0060] (6) Sidelink sensing between terminals. At this time, terminal B receives the sensing signal sent by terminal A and performs sensing measurements.

[0061] It should be noted that Figure 2 each sensing mode takes a sensing signal sending node and a sensing signal receiving node as examples. In an actual system, one or more different sensing modes can be selected according to different sensing use cases and sensing requirements, and there can be one or more sending nodes and receiving nodes for each sensing mode. Figure 2 The sensing targets in take people and vehicles as examples, and it is assumed that neither people nor vehicles carry or install signal transceiver devices. The sensing targets in the actual scenario will be more diverse.

[0062] II. Power Control of New Radio (NR)

[0063] The NR protocol defines the power control for the Physical Uplink Shared Channel (PUSCH), Physical Uplink Control Channel (PUCCH), Sounding Reference Signal (SRS), and Physical Random Access Channel (PRACH) in the uplink.

[0064] PUSCH: If the UE transmits a PUSCH on the carrier f of the serving cell c using the parameter set configuration with index j and the PUSCH power control adjustment state with index l on the activated UL bandwidth part (BWP) b, the UE determines the PUSCH transmission power for the PUSCH transmission occasion i as P PUSCH,b,f,c (i, j, q d , l), which is represented by the following Formula 1:

[0065] Formula 1,

[0066]

[0067] Note: The parameter j is used to represent the parameter configuration index of open-loop power control (for example, j = 0 represents the PUSCH in RACH, j = 1 represents the PUSCH related to configured grant, j >= 2 represents the PUSCH of dynamic grant), the parameter l is used to represent the process index of closed-loop power control, and q d represents the reference signal index

[0068] where P CMAX,f,c (i) represents the maximum transmission power of the UE at time i, which is for the carrier and the cell;

[0069] P O_PUSCH,b,f,c (j) is the target received power (on a 15 kHz SCS RB) of the open-loop control configuration index j, which is defined for the BWP, the carrier, and the cell;

[0070] PL b,f,c (q d ) is the downlink path loss estimated by the UE using the reference signal q d , which is defined for the BWP, the carrier, and the cell;

[0071] α b,f,c (j) is the partial path loss compensation factor defined by the open-loop control configuration index j, which is defined for the BWP, the carrier, and the cell;

[0072] Δ TF,b,f,c (i) defines the transmission power required for each RE of the UE at time i, which is defined for the BWP, the carrier, and the cell, and is only used for single-layer transmission and is 0 for multi-layer transmission;

[0073] is the number of resource blocks (RBs) of the PUSCH at time i. Combining with the subcarrier spacing (SCS) determines the total bandwidth of the PUSCH, which is defined for the BWP, the carrier, and the cell;

[0074] f b,f,c (i, l) is the bias value introduced by the closed-loop power control process l at time i, which is the sum of the power adjustment values indicated by the TPC commands at past times, i.e., where δ PUSCH,b,f,c (m, l) is the m-th TPC command indicated power adjustment value of the l-th closed-loop power control process, all defined for the BWP, carrier, and cell.

[0075] PUCCH: If a terminal transmits PUCCH using the PUCCH power control adjustment state with index l on the active UL BWP b of carrier f in the primary cell c, the terminal determines the PUCCH transmission power for the PUCCH transmission occasion i as P PUCCH,b,f,c (i, q u , q d , l), which is represented by the following Formula 2:

[0076] Formula 2,

[0077]

[0078] where:

[0079] P CMAX,f,c (i) is the maximum transmission power of the UE at time i, defined for the carrier and cell;

[0080] P O_PUSCH,b,f,c (j) is the target received power of the open-loop control configuration index j (on an RB with 15 kHz SCS), defined for the BWP, carrier, and cell;

[0081] PL b,f,c (q d ) is the downlink path loss estimated by the UE using the reference signal q d , defined for the BWP, carrier, and cell;

[0082] α b,f,c (j) is the partial path loss compensation factor defined by the open-loop control configuration index j, defined for the BWP, carrier, and cell;

[0083] Δ TF,b,f,c (i) defines the transmission power required for each RE of the UE at time i, defined for the BWP, carrier, and cell, only used for single-layer transmission and is 0 for multi-layer transmission;

[0084] is the number of RBs of the PUSCH at time i, and together with the SCS determines the total bandwidth of the PUSCH, defined for the BWP, carrier, and cell;

[0085] f b,f,c (i, l) is the bias value introduced by the closed-loop power control process l at time i, which is the sum of the power adjustment values indicated by the TPC commands at past times, i.e., where δ PUsCH,b,f,c (m, l) is the m-th TPC command indicated power adjustment value of the l-th closed-loop power control process, all defined for BWP, carrier, and cell.

[0086] PUCCH: If a terminal uses the PUCCH power control adjustment state with index l and transmits PUCCH on the active UL BWP b of carrier f in the primary cell c, then the terminal determines the PUCCH transmission power in the PUCCH transmission occasion i as P PUCCH,b,f,c (i, q u , q d , l), which is represented by the following formula three:

[0087] Formula three,

[0088]

[0089] Note: q u is the index of the PUCCH (the UE may need to transmit multiple PUCCHs simultaneously), and the differences from PUSCH are as follows:

[0090] 1. There is no partial path loss compensation factor;

[0091] 2. P O_PUCCH,b,f,c (q u ) is the target received power of the q u -th PUCCH, defined for BWP, carrier, and cell;

[0092] 3. Δ F_PUCCH (F) represents the power control bias that needs to be introduced for different PUCCH formats (F). For example,

[0093] delta - PUCCH - fo applies to PUCCH format 0, delta - PUCCH - f1 applies to PUCCH format 1, delta - PUCCH - f2 applies to PUCCH format 2, delta - PUCCH - f3 applies to PUCCH format 3. If there is a delta - PUCCH - f4 for PUCCH format 4; otherwise, Δ F_PUCCH (F) = 0;

[0094] 4. g b,f,c (i, l) is the bias value introduced by the closed-loop power control process l at time i, which is the sum of the power adjustment values indicated by the TPC commands at past times.

[0095] SRS: If a terminal transmits SRS on the active UL BWP b of carrier f in serving cell c according to the configuration of SRS-resourceset using the SRS power control adjustment state with index I, the terminal determines the SRS transmission power for SRS transmission occasion i as P SRS,b,f,c (i,q s ,l) as expressed by the following formula 4:

[0096] Formula 4,

[0097]

[0098] The differences from PUSCH are as follows:

[0099] P O_SRS,b,f,c (q s ) is the SRS target received power of the q S th SRS resource set, which is defined for BWP, carrier, and cell;

[0100] M SRS,b,f,c (i) is the number of RBs of SRS at time i. Combining with the SCS determines the total bandwidth of SRS, which is defined for BWP, carrier, and cell

[0101] α SRS,b,f,c (q s ) is the partial path loss compensation factor of SRS resource set q s , which is defined for BWP, carrier, and cell;

[0102] h b,f,c (i,l) is the bias value introduced by the closed-loop power control process l at time i. It can be the same as the power control bias value of PUSCH, or (when there is no PUSCH transmission) it is the sum of the power adjustment values indicated by the TPC commands at past times.

[0103] PRACH: A UE determines the transmission power P PRACH,b,f,c (i) of a PRACH based on the DL RS of cell c at transmission occasion i for the active UL BWP b of carrier f in cell c, as expressed by the following formula 5:

[0104] Formula 5, P PRACH,b,f,c (i) = min{P CMAX,f,c (i), P PRACH,target,f,c + PL b,f,c}} [dBm].

[0105] The differences from PUSCH are as follows:

[0106] P PrACH,target,f,cis the target received power of the PRACH, given by PREAMBLE_RECEIVED_TARGET_POWER, and is defined for the BWP, carrier, and cell;

[0107] L b,f,c is the downlink path loss estimated by the UE using the uniquely associated reference signal (referenceSignalPower – higher layer filtered RSRP in dBm), and is defined for the BWP, carrier, and cell.

[0108] Currently, the power control mechanism for uplink sensing signals is not clear.

[0109] The following will, in conjunction with the accompanying drawings, through some embodiments and their application scenarios, elaborate on the signal transmission methods, devices, terminals, and network-side devices provided by the embodiments of the present application.

[0110] As Figure 3 shown, the embodiments of the present application provide a signal transmission method, including:

[0111] Step 301, the terminal measures the first signal sent by the network-side device and obtains the received power of the sensing target associated path;

[0112] Step 302, the terminal determines the transmission power of the second signal according to the received power of the sensing target associated path;

[0113] Step 303, the terminal uses the transmission power to send the second signal to the network-side device.

[0114] It should be noted that in the embodiments of the present application, the transmission power of the second signal is determined according to the received power of the sensing target associated path obtained by measuring the first signal sent by the network-side device; then, based on this transmission power, the second signal is sent to the network-side device; in this way, uplink power control for wireless sensing or integrated communication and sensing can be achieved, ensuring the reliability of sensing.

[0115] Optionally, in the embodiments of the present application, the first signal mentioned is sent by the network-side device to the terminal; this first signal can be a dedicated signal for sensing services, a communication signal (for example, a reference signal (such as CSI-RS, Tracking Reference Signal (TRS))), a synchronization signal, etc.) or other signals. This second signal can be a dedicated signal for sensing services, a communication signal (for example, a Sounding Reference Signal (SRS)) or other signals.

[0116] It should be noted that, prior to this, the network-side device needs to determine the target beam through the downlink sensing beam management process or the uplink sensing beam management process.

[0117] Among them, the target beam includes at least one of the following:

[0118] A11. Downlink transmission beam;

[0119] A12. Downlink reception beam;

[0120] A13. Uplink transmission beam;

[0121] A14. Uplink reception beam.

[0122] That is to say, the network-side device needs to determine the downlink transmission beam, or the beam pair composed of the downlink transmission beam and the downlink reception beam, or the uplink transmission beam, or the beam pair composed of the uplink transmission beam and the uplink reception beam respectively through the downlink sensing beam management process or the uplink sensing beam management process (for example, making the downlink beam point to the position of the sensing target; or making the uplink beam point to the position of the sensing target).

[0123] Optionally, in this way, the first signal and the downlink transmission beam determined through the downlink sensing beam management process or the uplink sensing beam management process are quasi-co-located; optionally, in this way, the terminal uses the downlink reception beam associated with the downlink transmission beam determined through the downlink sensing beam management process or the uplink sensing beam management process (i.e., the same beam pair) to measure and receive the first signal transmitted by the network-side device.

[0124] Optionally, in one implementation manner, the specific implementation of determining the transmission power of the second signal according to the received power of the path associated with the sensing target includes:

[0125] Based on the first parameter, determine the transmission power of the second signal;

[0126] Optionally, the specific form of the second parameter can adopt one of the following methods:

[0127] The specific form one of the second parameter, the first parameter, includes:

[0128] A21. The maximum transmission power of the terminal;

[0129] It should be noted that the maximum transmission power of the terminal can be directly obtained by the terminal according to its own configuration.

[0130] A21. Target received power;

[0131] Optionally, in the first implementation manner, the target received power is equal to the preset received power (ReceivedTargetPower) of the sensing target associated path.

[0132] It should be noted that the preset received power of the sensing target associated path is configured and sent by the network-side device to the terminal. For example, the preset received power of the sensing target associated path is a parameter configured by the network-side device through RRC signaling, in order to achieve sensing performance at this target received power; for example, the core network sensing network function determines that ReceivedTargetPower must be greater than -100 dBm according to the sensing accuracy in the sensing requirement, such as 95%.

[0133] Optionally, in one implementation manner, the preset received power of the sensing target associated path is determined by the format of the second signal, which can be understood that the values of the preset received power of the sensing target associated path corresponding to different formats of the second signal are different.

[0134] It should be noted that the format (Format) of the second signal includes the sequence format of the second signal, the bandwidth (such as the number of subcarriers or the number of RBs, etc.).

[0135] For example, the correspondence between the format of the second signal and the preset received power of the sensing target associated path is shown in Table 2.

[0136] Table 2 Correspondence between the format of the second signal and the preset received power of the sensing target associated path

[0137] Format of the first signal Value of ReceivedTargetPower Format A Value 1 Format B Value 2 Format C Value 3

[0138] Optionally, in the second implementation manner, the target received power is equal to the sum of the preset received power of the sensing target associated path and the power offset.

[0139] Optionally, in one implementation manner, the power offset is determined by the format of the second signal; or, the preset received power of the sensing target associated path is determined by the format of the second signal.

[0140] It should be noted that the values of the power offset (DELTA) corresponding to the format of the second signal (shown in the following table) are defined by the protocol or notified by the network-side device to the terminal. When the power offset is determined by the format of the second signal, the values of the power offset corresponding to different formats of the second signal are different. For example, the correspondence between the format of the second signal and the values of the power offset is shown in Table 3.

[0141] Table 3 Correspondence between the format of the second signal and the values of the power offset

[0142] Format of the second signal Value of DELTA Format A Value 1 Format B Value 2 Format C Value 3

[0143] It should be noted that in the case of introducing power offset, generally, the preset received power of the perceived target associated path configured by the network-side device for different formats of the second signal is the same.

[0144] A23. Path loss parameter;

[0145] It should be noted that the path loss parameter is determined based on the received power of the perceived target associated path.

[0146] Optionally, in the first implementation, the path loss parameter is a path loss factor, and the path loss factor is determined by the transmission power of the first signal indicated by the network-side device and the received power of the perceived target associated path.

[0147] For example, the path loss factor is determined by the following formula:

[0148] PathLoss factor = reference signal power - the first metric;

[0149] Where, PathLoss factor is the path loss factor, the first metric is the received power of the perceived target associated path measured by the terminal for the first signal; reference signal power (reference signal power) is the transmission power of the first signal, and reference signal power is notified by the network-side device to the terminal, for example, broadcast by the network-side device through the system information block (SIB) signaling; the first signal is the signal sent by the base station, such as a synchronization signal, CSI-RS, or other signals;

[0150] It should be noted that the difference between the reference signal power and the received power of the perceived target associated path can better reflect the perceived path loss (that is, the path loss of the perceived signal from the sending end after being emitted by the perceived target and reaching the receiving end).

[0151] Optionally, in the second implementation, the path loss parameter is determined by the path loss factor and a partial path loss compensation factor.

[0152] Optionally, the path loss parameter is the product of the path loss factor and the partial path loss compensation factor.

[0153] It should be noted that, optionally, the path loss factor generally takes a value between 0 and 1, that is, partial path loss compensation, in order to mitigate the uplink co-frequency interference between cells; optionally, in order to ensure the sensing performance, at least when the uplink co-frequency interference in the cell is not serious or when interference coordination measures are taken, the path loss factor can be set to 1 (i.e., full path loss compensation), or even the path loss factor is greater than 1, to provide some margin for the received power of the sensing target associated path and ensure the sensing performance.

[0154] Specific form of the second parameter II. The first parameter includes:

[0155] A31. The maximum transmission power of the terminal;

[0156] A32. The target received power;

[0157] A33. The path loss parameter;

[0158] A34. The second parameter;

[0159] Wherein, the second parameter includes at least one of the following:

[0160] A341. The bandwidth occupied by the second signal;

[0161] Optionally, in one implementation, the bandwidth occupied by the second signal is determined by the number of RBs occupied by the second signal.

[0162] For example, RB factor = 10log 10 (2 μ M RB,b,f,c (i)), where RB factor is the bandwidth occupied by the second signal, M RB,b,f,c (i) is the number of RBs of the first signal at time i. Combining with the SCS subcarrier spacing, the total bandwidth of the second signal is determined. M RB,b,f,c (i) is defined for the bandwidth part BWP(b), carrier (f) and cell (c); μ is related to the subcarrier spacing and can take values 0, 1, 2, 3, etc., corresponding to subcarrier spacings of 15KHz, 30KHz, 60KHz and 120KHz respectively.

[0163] Optionally, in the first implementation, the number of RBs occupied by the second signal is determined by the number of RBs occupied by the subcarriers occupied by the second signal;

[0164] This situation can be understood as that the number of RBs occupied by the second signal is determined by the number of RBs spanned by the second signal, that is, for some RBs, not all subcarriers are occupied, only some subcarriers are occupied, then this RB is also considered one of the RBs spanned by the first signal.

[0165] Optionally, in the second implementation manner, the number of RBs occupied by the second signal is determined by the number of subcarriers occupied by the second signal.

[0166] This situation can be understood as converting the number of subcarriers occupied by the second signal to the total number of RBs to obtain the number of RBs occupied by the second signal; it should be noted here that if the obtained value is not an integer, the ceiling or floor method can be used to obtain an integer value; for example, if the first signal occupies 50% of the subcarriers of an RB, then this RB is considered 0.5 RBs, and the ceiling method is used to obtain 1 RB.

[0167] It should be noted that this method takes into account the impact of frequency-domain non-uniform sensing signals or sensing signals with different frequency-domain densities. To keep the transmission power of the terminal constant within a time slot (slot), the signal pattern can be designed so that the frequency-domain resources on the symbols of the transmitted sensing signal (i.e., the second signal) within a slot are the same, so that the transmission power on each symbol within the slot is the same; or, calculate the average number of RBs within a time window (such as a slot), and determine the transmission power of the terminal on this slot according to this average number.

[0168] A342. Power adjustment value;

[0169] Optionally, the power adjustment value is configured by the network-side device for the terminal. For example, as shown in Table 4, the network-side device represents the power adjustment value through two bits (bit) of the Downlink Control Information (DCI):

[0170] Table 4 Corresponding relationship between different bit representations of DCI and power adjustment values

[0171] Two bits of DCI Power adjustment value (dB) 00 -1 01 0 10 1 11 3

[0172] The determination method of the transmission power of the second signal is specifically described as follows.

[0173] Case 1. The first parameter includes: the maximum transmission power of the terminal, the target reception power, and the path loss parameter.

[0174] It should be noted that in this case, it can be understood as performing open-loop power control. The terminal can determine the transmission power of the second signal according to the following formula:

[0175] Tx Power = MAX{P - MAX, (Target Rx Power + α·PathLoss factor)};

[0176] Among them, Tx Power is the transmission power of the second signal; P-MAX is the maximum transmission power of the terminal; Target RxPower is the target reception power; α is the partial path loss compensation factor; PathLoss factor is the path loss factor.

[0177] Case 2: The first parameter includes the maximum transmission power of the terminal, the target reception power, the path loss parameter, and a second parameter, and the second parameter includes a power adjustment value.

[0178] It should be noted that in this case, it can be understood as performing closed-loop power control, and the terminal can determine the transmission power of the second signal according to the following formula:

[0179] Tx Power = MAX{P-MAX, (Target Rx Power + α·PathLoss factor + Power ControlCommand)};

[0180] Among them, Power Control Command is the power adjustment value.

[0181] Case 3: The first parameter includes the maximum transmission power of the terminal, the target reception power, the path loss parameter, and a second parameter, and the second parameter includes the bandwidth occupied by the second signal.

[0182] It should be noted that in this case, it can be understood as performing open-loop power control, and the terminal can determine the transmission power of the second signal according to the following formula:

[0183] Tx Power = MAX{P-MAX, (Target Rx Power + α·PathLoss factor + RB factor)};

[0184] Among them, RB factor is the bandwidth occupied by the second signal.

[0185] Case 4: The first parameter includes the maximum transmission power of the terminal, the target reception power, the path loss parameter, and a second parameter, and the second parameter includes the bandwidth occupied by the second signal and a power adjustment value.

[0186] It should be noted that in this case, it can be understood as performing closed-loop power control, and the terminal can determine the transmission power of the second signal according to the following formula:

[0187] Tx Power = MAX{P - MAX, (Target Rx Power + α · PathLoss factor + RB factor + Power Control Command)}.

[0188] It should be noted that the calculation method of the transmission power of the second signal in the embodiments of the present application only focuses on the parameters related to the sensing path. Of course, other parameters can also be introduced into the calculation formula of the received power, for example, factors related to MCS (Modulation and Coding Scheme) in NR power control, etc.

[0189] It should also be noted that after the terminal determines the transmission power according to the above power control formula, it needs to report the information related to the transmission power (absolute value of power, or power headroom) to the network-side device.

[0190] Optionally, in one implementation manner, the received power of the sensing target associated path mentioned in the embodiments of the present application is the linear average of the received power of the sensing target associated path in the channel response measured for the first signal on the resource unit carrying the first signal.

[0191] It should be noted that the sensing target associated path can also be referred to as the path associated with the sensing target.

[0192] Here, it can be understood that the sensing target associated paths may be distributed on multiple resource units, and the finally determined received power of the sensing target associated path is obtained by linearly averaging the received powers of the sensing target associated paths on multiple resource units. The unit of the received power of the sensing target associated path is watt (W).

[0193] It should be noted here that the resource unit can be at least one of a frequency domain unit and a time domain unit.

[0194] Optionally, the obtaining method of the sensing target associated path includes:

[0195] Step a1, the terminal performs channel estimation on the first signal and the received signal corresponding to the first signal to obtain a channel response;

[0196] Step a2, transform the channel response to the first dimension;

[0197] Wherein, the first dimension includes at least one of the following:

[0198] Delay dimension;

[0199] Doppler dimension;

[0200] Azimuth angle dimension;

[0201] Elevation angle dimension.

[0202] For example, when the first dimension includes a time delay dimension and a Doppler dimension, it can be called a time delay-Doppler dimension; when the first dimension includes a time delay dimension, a Doppler dimension, and an azimuth angle, it can be called a time delay-Doppler-angle dimension.

[0203] Step a3: Determine the sensing target associated path in the path corresponding to the first dimension;

[0204] Optionally, the specific implementation of determining the sensing target associated path in this step includes:

[0205] In the path corresponding to the first dimension, select the path that meets the first condition as the sensing target associated path;

[0206] Among them, the first condition includes at least one of the following:

[0207] A41: The third parameter of the path exceeds the first threshold or is within the first interval range;

[0208] Among them, the third parameter includes at least one of the following: amplitude, power, intensity, energy, Doppler, time delay, angle;

[0209] It should be noted here that the value of the first threshold corresponding to different third parameters is different, or the range values of the first interval range corresponding to different third parameters are different.

[0210] For example, the third threshold is 5 times higher than the noise threshold.

[0211] A42: The difference between the third parameter of the path and that of the first arrival path or the reference path exceeds the second threshold or is within the second interval range;

[0212] For example, the first arrival path can be a line of sight (LOS) path. For example, the reference path can be a signal path reflected by a known target (such as a Reconfigurable intelligent surface (RIS) / Backscatter / other known passive targets, etc.).

[0213] A43: The fourth parameter of the path meets the preset modulation rule;

[0214] Among them, the fourth parameter includes at least one of the following: amplitude, power, intensity, energy, phase.

[0215] Optionally, the preset modulation rule is the modulation rule of a Tag / backscatter device or an RIS, that is, the sensing target associated path can be a path modulated and reflected by a Tag / backscatter device or an RIS.

[0216] It should be noted that after transforming the channel response to the first dimension, the terminal can directly select the paths that meet the first condition as the perception target associated paths based on the paths corresponding to the first dimension. Of course, to improve the selection efficiency, another selection method is provided in the embodiments of the present application. Optionally, the specific implementation of selecting the paths that meet the first condition as the perception target associated paths among the paths corresponding to the first dimension includes:

[0217] Determine a first path set among the paths corresponding to the first dimension, where the fifth parameter of each path in the first path set exceeds a third threshold, and the fifth parameter includes at least one of the following: amplitude, power, intensity, energy;

[0218] Among the first path set, determine the paths that meet the first condition as the perception target associated paths.

[0219] It should be noted here that the third thresholds corresponding to different fifth parameters can be different or the same.

[0220] This method can be understood as first determining a set of paths in a small range among the paths corresponding to the first dimension, and then determining the perception target associated paths in this set. That is to say, the third threshold is the detection threshold of the first path set.

[0221] It should be noted that the fifth threshold can be set to be higher than the noise threshold or higher than the noise interference threshold.

[0222] For example, as Figure 4 shown, Figure 4 in, paths 0, 1, 2, and 3 are the paths in the first path set, where the amplitudes, powers, intensities, or energies of paths 2 and 3 exceed the fifth threshold, and paths 0 and 1 are the paths associated with other scatterers. It should be noted that Figure 4 in the horizontal axis is the first dimension, and the vertical axis is the normalized amplitude / power / intensity / energy.

[0223] For frequency range 1, the reference point of the first indicator can be the antenna connector of the terminal. For frequency range 1, if the terminal has multiple receiving channels, the first indicator measured and reported by the terminal cannot be lower than the indicator of any single receiving channel. For frequency range 2, the first indicator measured by a certain receiving channel needs to be measured for the combined signals on the multiple antenna units corresponding to this receiving channel.

[0224] For example, the first specific acquisition process of the received power of the perception target associated path can be:

[0225] The terminal performs channel estimation based on the transmitted first signal X(k) and the received signal Y(k) corresponding to the first signal to obtain the channel response H(k)=Y(k) / X(k), where k represents the resource element index, and k = 0, 1, 2, …, k - 1. After the terminal obtains the channel response H(k), it transforms it to the first dimension and determines the perception target associated path in the first dimension. Then, it calculates the received power of the perception target associated path. If the perception target associated path includes multiple paths, it calculates the sum of the powers of the multiple paths as the received power of the perception target associated path.

[0226] For example, if H(f) is the channel response, where f = 0, 1, 2, …, N - 1 represents the frequency domain sampling points (such as subcarrier indices), then H(f) can be transformed to the delay dimension (the first dimension) by performing an inverse Fourier transform on H(f); for another example, if H(f,t) is the channel response, where f = 0, 1, 2, …, N - 1 represents the frequency domain sampling points (such as subcarrier indices), and t represents the time domain sampling points (such as OFDM symbol indices), t = 0, 1, 2, …, M - 1, then H(f,t) can be transformed to the delay-Doppler dimension (the first dimension) by performing an inverse Fourier transform along the frequency domain dimension and a Fourier transform along the time domain dimension; for another example, if H(f,t,s) is the channel response, where f = 0, 1, 2, …, N - 1 represents the frequency domain sampling points (such as subcarrier indices), t represents the time domain sampling points (such as OFDM symbol indices), t = 0, 1, 2, …, M - 1, and s represents the spatial domain sampling points (antenna indices or port indices), s = 0, 1, 2, …, P - 1, then H(f,t,s) can be transformed to the delay-Doppler-angle dimension (the first dimension) by performing an inverse Fourier transform along the frequency domain dimension, a Fourier transform along the time domain dimension, and a Fourier transform along the antenna domain dimension.

[0227] For example, the second specific acquisition process of the received power of the perception target associated path can be:

[0228] Optionally, when calculating the received power of the perception target associated path, it can also be the difference between the power of the perception target associated path in the first dimension and as the received power of the perception target associated path, where N 1 represents the number of perception target associated paths. is the average power of multiple paths outside the first path set in the first dimension.

[0229] It should be noted that the above thresholds or range intervals can be sent by other devices (such as network-side devices) to the terminal, and the other devices can determine them according to the perception prior information or perception requirements. Alternatively, the above thresholds or range intervals are determined by the terminal according to the perception prior information or perception requirements.

[0230] It should be noted that the perception prior information or perception requirements include one or more of the following information:

[0231] B11. Perception service or perception service type;

[0232] It should be noted that the perception services mentioned in the embodiments of the present application can be, for example, detecting the presence of a target, positioning, speed detection, distance detection, angle detection, acceleration detection, material analysis, component analysis, shape detection, category classification, radar cross section (RCS) detection, polarization scattering characteristic detection, fall detection, intrusion detection, quantity statistics, indoor positioning, gesture recognition, lip reading recognition, gait recognition, expression recognition, face recognition, breathing monitoring, heart rate monitoring, pulse monitoring, humidity / brightness / temperature / atmospheric pressure monitoring, air quality monitoring, weather condition monitoring, environment reconstruction, terrain and landform, building / vegetation distribution detection, pedestrian flow or vehicle flow detection, crowd density, vehicle density detection, etc.; the perception service type can classify multiple different perception services according to certain characteristics, for example, classified into detection-type perception services (such as including intrusion detection, fall detection), parameter estimation-type perception services (distance, angle, speed calculation), recognition-type perception services (action recognition, identity recognition), etc. according to function, and can also be classified according to the perception range (close-range perception, medium-range perception, long-range perception), according to the perception fineness (coarse-grained perception, fine-grained perception, etc.), according to power consumption / energy consumption, according to resource occupancy, etc. If the perception service is breathing monitoring, the corresponding normal breathing frequency can be judged according to the gender and age of a person (for example, male: 13-21 times per minute, female: 15-20 times per minute; adult: 12-20 times per minute, child: about 30-40 times per minute), which can be used as perception prior information.

[0233] B12. Perception target area;

[0234] The perception target area refers to the position area of the perception object, or the position area where imaging or environment reconstruction needs to be performed; for example, the preset interval range of the time delay of the perception target associated path is determined according to the approximate position / distance of the perception object.

[0235] B13. Perception object type;

[0236] It should be noted that by classifying the perceived objects according to their possible motion characteristics, the types of perceived objects can be obtained. Each type of perceived object contains information such as the motion speed range, motion acceleration range, and typical RCS range of typical perceived objects;

[0237] B14. The number of perceived targets;

[0238] For example, as a kind of prior perception information, the perception result of the camera can be used to obtain the number of perceived targets.

[0239] It should also be noted here that if the terminal determines multiple perceived targets, or the terminal obtains the number of perceived targets according to prior perception information or perception requirements, then there are the following several methods:

[0240] Method 1: Calculate the target indicators of each perceived target respectively. For example, in Figure 4 determine the paths associated with each perceived target respectively, and then calculate the corresponding target indicators of each perceived target; when calculating the second indicator corresponding to a certain perceived target (such as perceived target A), there are two methods: that is, the second indicator of perceived target A = total received power - the first indicator of perceived target A; or, the second indicator of perceived target A = total received power - the first indicator of perceived target A - the first indicator of perceived target B; (assuming there are two perceived targets in total: A and B); similarly, there are also two calculation methods for the fourth indicator: the fourth indicator of perceived target A = RSRP of the first signal - the first indicator of perceived target A; or, the fourth indicator of perceived target A = RSRP of the first signal - the first indicator of perceived target A - the first indicator of perceived target B; (assuming there are two perceived targets in total: A and B)

[0241] Method 2: Calculate a target indicator for multiple perceived targets. For example, in Figure 4 determine the paths associated with any perceived target, and then use these paths as the paths associated with the perceived target; it is equivalent to regarding multiple perceived targets as a virtual perceived target, and then calculating the target indicator corresponding to this virtual perceived target.

[0242] It should also be noted that the configuration information of the first signal and the configuration information of the second signal are configured by the network-side device for the terminal and sent to the terminal. Optionally, the configuration information may include but is not limited to at least one of the following:

[0243] C101. Signal resource identifier (ID), used to distinguish different signal resource configurations;

[0244] C102, Signal Usage, indicating that the signal is for communication (such as channel measurement, channel estimation, synchronization, carrying data information, etc.), for sensing, or for both communication and sensing. Specifically, it can also be the signal for which sensing service or which type of sensing service. The definitions of the sensing service and the type of sensing service can refer to Explanation 2.

[0245] C103, Waveform, for example, the waveform is Orthogonal Frequency Division Multiplexing (OFDM), Single-Carrier Frequency-Division Multiple Access (SC-FDMA), Orthogonal Time Frequency Space (OTFS), Frequency Modulated Continuous Wave (FMCW), pulse signal, etc.;

[0246] C104, Subcarrier Spacing, for example, the subcarrier spacing of the OFDM system is 30 KHz.

[0247] C105, Guard Interval, which is the time interval between the moment when the signal ends transmission and the moment when the latest echo signal of the signal is received; this parameter is proportional to the maximum sensing distance; for example, it can be calculated by c / (2R_max), where R_max is the maximum sensing distance (belonging to the sensing requirement information). For example, for a self-transmitting and self-receiving sensing signal, R_max represents the maximum distance from the sensing signal transceiver point to the signal transmitting point; in some cases, the cyclic prefix (CP) of the OFDM signal can act as the minimum guard interval; c is the speed of light.

[0248] C106, Starting Frequency Domain Position, that is, the starting frequency point, which can also be the starting RE or RB index;

[0249] C107, Starting Time Domain Position, that is, the starting time point, which can also be the starting symbol index, time slot index, or frame index;

[0250] C108, Ending Frequency Domain Position, that is, the ending frequency point, which can be represented by the ending RE or RB index;

[0251] C109, Ending Time Domain Position, that is, the ending time point, which can be represented by the ending RE or RB index;

[0252] C110. The frequency-domain resource length, i.e., the frequency-domain bandwidth, which is inversely proportional to the range resolution. The frequency-domain bandwidth B of each of the first signals satisfies B≥c / (2ΔR), where c is the speed of light and ΔR is the range resolution.

[0253] C111. The time-domain resource length, also known as the burst duration, which is inversely proportional to the Doppler resolution.

[0254] C112. The frequency-domain resource interval, representing the interval between adjacent signal frequency-domain resource units, which can be expressed by the number of REs or RBs, or by the density value Density. For example, Density = 1 means that there is one RE in each RB for carrying signals. The frequency-domain resource interval is inversely proportional to the maximum unambiguous range / delay. For an OFDM system, when the subcarriers are continuously mapped, the frequency-domain interval is equal to the subcarrier interval.

[0255] C113. The time-domain resource interval, which is the time interval between two adjacent signal resource units and is associated with the maximum unambiguous Doppler shift or the maximum unambiguous speed.

[0256] C114. The time-domain resource characteristics, including periodic transmission, semi-persistent transmission, and non-periodic transmission.

[0257] C115. The signal power, for example, taking values every 2 dBm from -20 dBm to 23 dBm.

[0258] C116. The sequence information, including sequence type information (such as ZC sequence, PN sequence, etc.), sequence generation method, sequence length, etc.

[0259] C117. The signal direction, i.e., the angle information or beam information of signal transmission.

[0260] C118. The QCL relationship. For example, the sensing signal includes multiple resources, and each resource has a QCL with an SSB. The QCL includes Type A, B, C, or D.

[0261] C119. The antenna port information, such as the maximum number of antenna ports and the antenna port index.

[0262] C120. The Cyclic Prefix (CP) information, including CP type (such as Normal Cyclic Prefix (NCP), Extended Cyclic Prefix (ECP), or a newly designed CP dedicated to sensing measurement, etc.) and CP length.

[0263] It should be noted that the network - side device receives the second signal, obtains the sensing measurement quantity, and sends the sensing measurement quantity to the Sensing Function function.

[0264] It should be noted that the sensing network function mentioned in the embodiments of the present application can also be called a sensing network element or a sensing functional network element. It can be located on the RAN side or the core network side. It refers to a network node in the core network and / or RAN that is responsible for at least one of the functions such as sensing request processing, sensing resource scheduling, sensing information interaction, and sensing data processing. It can be upgraded from the AMF or LMF in the 5G network, or it can be other network nodes or newly defined network nodes. Specifically, the functional characteristics of the sensing functional network element can include at least one of the following:

[0265] C21. Perform target information interaction with a wireless signal transmitting device and / or a wireless signal measuring device (including the target terminal or the serving base station of the target terminal or the base station associated with the target area). Among them, the target information includes a sensing processing request, sensing capabilities, sensing auxiliary data, sensing measurement quantity types, sensing resource configuration information, etc., to obtain the value of the target sensing result or the sensing measurement quantity (uplink measurement quantity or downlink measurement quantity) sent by the wireless signal measuring device; among them, the wireless signal can also be called a sensing signal.

[0266] C22. Determine the sensing method to be used according to factors such as the type of sensing service, sensing service consumer information, required sensing Quality of Service (QoS) requirement information, sensing capabilities of the wireless signal transmitting device, and sensing capabilities of the wireless signal measuring device. The sensing method can include: base station A transmits and base station B receives, or base station transmits and terminal receives, or base station A transmits and receives by itself, or terminal transmits and base station receives, or terminal transmits and receives by itself, or terminal A transmits and terminal B receives, etc.

[0267] C23. Determine the sensing devices for the sensing service according to factors such as the type of sensing service, information of the sensing service consumer, required sensing QoS requirement information, sensing capabilities of the wireless signal transmitting device, and sensing capabilities of the wireless signal measuring device. Among them, the sensing devices include a wireless signal transmitting device and / or a wireless signal measuring device.

[0268] C24. Manage the overall coordination and scheduling of the resources required for the sensing service, such as performing corresponding configuration on the sensing resources of the base station and / or the terminal;

[0269] C25. Perform data processing on the value of the sensing measurement quantity, or perform calculations to obtain the sensing result. Further, verify the sensing result, estimate the sensing accuracy, etc.

[0270] Optionally, the measurement quantity can include but is not limited to at least one of the following:

[0271] C31. The first - level measurement quantity (received signal / original channel information) includes: the complex result of the received signal / channel response, amplitude / phase, I - channel / Q - channel and their operation results (operations include addition, subtraction, multiplication, division, matrix addition, subtraction, multiplication, matrix transpose, trigonometric relation operations, square - root operation, power operation, etc., and the threshold detection results and maximum / minimum extraction results of the above operation results; operations also include Fast Fourier Transform (FFT) / Inverse Fast Fourier Transform (IFFT), Discrete Fourier Transform (DFT) / Inverse Discrete Fourier Transform (IDFT), 2D - FFT, 3D - FFT, matched filtering, autocorrelation operation, wavelet transform, digital filtering, etc., and the threshold detection results and maximum / minimum extraction results of the above operation results);

[0272] C32. The second - level measurement quantity (basic measurement quantity) includes: time delay, Doppler, angle, intensity, and their multi - dimensional combined representation;

[0273] C33. The third - level measurement quantity (basic attribute / status) includes: distance, speed, orientation, spatial position, acceleration, etc.;

[0274] C34. The fourth - level measurement quantity (advanced attribute / status) includes: whether the target exists, trajectory, action, expression, vital signs, quantity, imaging result, weather, air quality, shape, material, composition.

[0275] Optionally, the above - mentioned measurement quantities also include corresponding tag information, and the tag information includes at least one of the following:

[0276] C401. Perceived signal identification information;

[0277] C402. Perceived measurement configuration identification information;

[0278] C403. Perceived service information (e.g., perceived service ID);

[0279] C404. Data subscription ID;

[0280] C405. Use of the measurement quantity (communication, perception, communication - sensing);

[0281] C406. Time information;

[0282] C407. Perceived node information (e.g., UE ID, node position, device orientation);

[0283] C408. Perceived link information (e.g., perceived link serial number, transceiver node identifier);

[0284] C409. Measurement quantity description information (e.g., the form of the measurement quantity description information can be an amplitude value, a phase value, a complex value combining amplitude and phase; the form of the measurement quantity description information can be a resource type, such as a time-domain measurement result, a frequency-domain resource measurement result);

[0285] C410. Measurement quantity index information (e.g., Signal-to-Noise Ratio (SNR), perceived SNR).

[0286] Optionally, the perceived demand information mentioned in the embodiments of the present application includes at least one of the following:

[0287] C51. Perceived service or perceived service type;

[0288] It should be noted that the perceived services mentioned in the embodiments of the present application can be, for example, detecting whether a target exists, positioning, speed detection, distance detection, angle detection, acceleration detection, material analysis, component analysis, shape detection, category classification, Radar Cross Section (RCS) detection, polarization scattering characteristic detection, fall detection, intrusion detection, quantity statistics, indoor positioning, gesture recognition, lip reading, gait recognition, expression recognition, face recognition, breathing monitoring, heart rate monitoring, pulse monitoring, humidity / brightness / temperature / atmospheric pressure monitoring, air quality monitoring, weather condition monitoring, environment reconstruction, terrain and landform, building / vegetation distribution detection, pedestrian or vehicle flow detection, crowd density / vehicle density detection, etc.; the perceived service type can classify multiple different perceived services according to certain characteristics, for example, classified by function into detection-type perceived services (e.g., including intrusion detection, fall detection), parameter estimation-type perceived services (distance, angle, speed calculation), recognition-type perceived services (action recognition, identity recognition), etc., and can also be classified according to the perceived range (close-range perception, medium-range perception, long-range perception), according to the perceived fineness (coarse-grained perception, fine-grained perception, etc.), according to power consumption / energy consumption, according to resource occupancy, etc. If the perceived service is breathing monitoring, the corresponding normal breathing frequency can be judged according to the gender and age of a person (e.g., male: 13 - 21 times per minute, female: 15 - 20 times per minute; adult: 12 - 20 times per minute, child: about 30 - 40 times per minute), which can be used as perceived prior information.

[0289] C51. Perceived target area;

[0290] The perceived target area refers to the area where the perceived object may be located, or the area where imaging or environmental reconstruction needs to be performed; for example, a preset interval range for determining the time delay of the perceived target correlation path is determined according to the approximate position / distance of the perceived object.

[0291] C53. Type of the perceived object;

[0292] It should be noted that by classifying the perceived object according to its possible motion characteristics, the type of the perceived object can be obtained. Each type of the perceived object contains information such as the motion speed, motion acceleration, and typical RCS of the typical perceived object;

[0293] C54. Perceived QoS;

[0294] It should be noted that the perceived QoS is a performance index for perceiving the perceived target area or the perceived object, including at least one of the following:

[0295] C541. Perceived resolution (which can be further divided into: ranging resolution, angle measurement resolution, velocity measurement resolution, imaging resolution, etc.);

[0296] C542. Perceived accuracy (which can be further divided into: ranging accuracy, angle measurement accuracy, velocity measurement accuracy, positioning accuracy, etc.);

[0297] C543. Perceived range (which can be further divided into: ranging range, velocity measurement range, angle measurement range, imaging range, etc.);

[0298] C544. Perceived time delay (the time interval from the sending of the perceived signal to the obtaining of the perceived result, or the time interval from the initiation of the perceived demand to the obtaining of the perceived result);

[0299] C545. Perceived update rate (the time interval between two adjacent executions of perception and the obtaining of the perceived result);

[0300] C546. Detection probability (the probability of being correctly detected when the perceived object exists);

[0301] C547. False alarm probability (the probability of erroneously detecting a perceived target when the perceived object does not exist);

[0302] C548. Maximum number of perceivable targets.

[0303] It should be noted that the embodiment of the present application proposes a power control method for integrated communication and sensing, which can ensure that the received power of the perceived target correlation path meets the requirements and ensure the sensing performance.

[0304] As Figure 5 shown, the embodiment of the present application provides a signal transmission method, including:

[0305] Step 501, the network device sends a first signal to the terminal;

[0306] Step 502, the network device receives a second signal sent by the terminal, and the transmission power of the second signal is determined by the received power of the perceived target associated path obtained by the terminal through receiving the first signal.

[0307] Optionally, the method further includes:

[0308] Determine a target beam through a downlink sensing beam management process or an uplink sensing beam management process;

[0309] Wherein, the target beam includes at least one of the following:

[0310] Downlink transmission beam;

[0311] Downlink receiving beam;

[0312] Uplink transmission beam;

[0313] Uplink receiving beam.

[0314] Optionally, the method further includes:

[0315] The network device sends a preset received power of the perceived target associated path to the terminal.

[0316] Optionally, the method further includes:

[0317] The network device sends the transmission power of the first signal to the terminal.

[0318] It should be noted that all the descriptions about the network device side in the above embodiments are applicable to the embodiments of the signal transmission method applied to the network device side, and can also achieve the same technical effects, which will not be elaborated here.

[0319] As Figure 6 shown, the signal transmission device 600 according to the embodiment of the present application is applied to a terminal and includes:

[0320] An acquisition module 601, configured to measure a first signal sent by a network device and acquire the received power of a perceived target associated path;

[0321] A first determination module 602, configured to determine the transmission power of a second signal according to the received power of the perceived target associated path;

[0322] A first transmission module 603, configured to use the transmission power to send the second signal to the network device.

[0323] Optionally, the first determination module 602 is configured to:

[0324] Determine the transmission power of the second signal based on a first parameter;

[0325] Wherein, the first parameter includes: the maximum transmission power of the terminal, the target reception power, and the path loss parameter; or

[0326] The first parameter includes: the maximum transmission power of the terminal, the target reception power, the path loss parameter, and a second parameter; the second parameter includes at least one of the following: the bandwidth occupied by the second signal, the power adjustment value;

[0327] Wherein, the path loss parameter is determined based on the reception power of the sensing target associated path.

[0328] Optionally, the target reception power is equal to the preset reception power of the sensing target associated path; or

[0329] The target reception power is equal to the sum of the preset reception power of the sensing target associated path and the power offset.

[0330] Optionally, the preset reception power of the sensing target associated path is determined by the format of the second signal; or

[0331] The power offset is determined by the format of the second signal.

[0332] Optionally, the path loss parameter is a path loss factor, and the path loss factor is determined by the transmission power of the first signal indicated by the network-side device and the reception power of the sensing target associated path.

[0333] Optionally, the path loss parameter is determined by a path loss factor and a partial path loss compensation factor;

[0334] Wherein, the path loss factor is determined by the transmission power of the first signal indicated by the network-side device and the reception power of the sensing target associated path.

[0335] Optionally, the bandwidth occupied by the second signal is determined by the number of resource blocks (RBs) occupied by the second signal;

[0336] Wherein, the number of RBs occupied by the second signal is determined by the number of RBs occupied by the subcarriers occupied by the second signal, or by the number of subcarriers occupied by the second signal.

[0337] Optionally, the reception power of the sensing target associated path is the linear average of the reception power of the sensing target associated path in the channel response measured for the first signal on the resource units carrying the first signal.

[0338] Optionally, the method for obtaining the perception target associated path includes:

[0339] Performing channel estimation on the first signal and the received signal corresponding to the first signal to obtain a channel response;

[0340] Transforming the channel response to the first dimension;

[0341] Determining the perception target associated path among the paths corresponding to the first dimension;

[0342] Wherein, the first dimension includes at least one of the following:

[0343] Delay dimension;

[0344] Doppler dimension;

[0345] Azimuth angle dimension;

[0346] Elevation angle dimension.

[0347] Optionally, the specific implementation of determining the perception target associated path among the paths corresponding to the first dimension includes:

[0348] Selecting the path that meets the first condition as the perception target associated path among the paths corresponding to the first dimension;

[0349] Wherein, the first condition includes at least one of the following:

[0350] The third parameter of the path exceeds the first threshold or is within the first interval range;

[0351] The difference between the third parameter of the path and that of the first-arrival path or the reference path exceeds the second threshold or is within the second interval range;

[0352] The fourth parameter of the path meets the preset modulation rule;

[0353] Wherein, the third parameter includes at least one of the following: amplitude, power, intensity, energy, Doppler, delay, angle;

[0354] The fourth parameter includes at least one of the following: amplitude, power, intensity, energy, phase.

[0355] Optionally, the specific implementation of selecting the path that meets the first condition as the perception target associated path among the paths corresponding to the first dimension includes:

[0356] Determining a first path set among the paths corresponding to the first dimension, where the fifth parameter of each path in the first path set exceeds the third threshold, and the fifth parameter includes at least one of the following: amplitude, power, intensity, energy;

[0357] In the first set of paths, determine the paths that meet the first condition as the paths associated with the sensing target.

[0358] Optionally, the obtaining module 601 is configured to:

[0359] Receive and measure the first signal transmitted by the network-side device by using a downlink receiving beam associated with the downlink transmission beam of the network-side device.

[0360] It should be noted that this device embodiment corresponds to the above method. All implementation manners in the above method embodiment are applicable to this device embodiment and can achieve the same technical effects, which will not be elaborated here.

[0361] The measurement switching device in the embodiments of the present application may 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. This electronic device may be a terminal or other devices other than the terminal. Exemplarily, the terminal may include, but is not limited to, the types of the terminal 11 listed above, and other devices may be a server, a Network Attached Storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0362] The embodiments of the present application further provide a terminal, including a processor and a communication interface. The processor is configured to measure the first signal transmitted by the network-side device and obtain the received power of the path associated with the sensing target;

[0363] Determine the transmission power of the second signal according to the received power of the path associated with the sensing target;

[0364] Transmit the second signal to the network-side device by using the transmission power.

[0365] Optionally, the processor is configured to:

[0366] Determine the transmission power of the second signal based on the first parameter;

[0367] The first parameter includes: the maximum transmission power of the terminal, the target received power, and the path loss parameter; or

[0368] The first parameter includes: the maximum transmission power of the terminal, the target received power, the path loss parameter, and the second parameter; the second parameter includes at least one of the following: the bandwidth occupied by the second signal, the power adjustment value;

[0369] The path loss parameter is determined based on the received power of the path associated with the sensing target.

[0370] Optionally, the target received power is equal to the preset received power of the sensing target associated path; or

[0371] The target received power is equal to the sum of the preset received power of the sensing target associated path and the power offset.

[0372] Optionally, the preset received power of the sensing target associated path is determined by the format of the second signal; or

[0373] The power offset is determined by the format of the second signal.

[0374] Optionally, the path loss parameter is a path loss factor, and the path loss factor is determined by the transmission power of the first signal indicated by the network-side device and the received power of the sensing target associated path.

[0375] Optionally, the path loss parameter is determined by the path loss factor and a partial path loss compensation factor;

[0376] wherein, the path loss factor is determined by the transmission power of the first signal indicated by the network-side device and the received power of the sensing target associated path.

[0377] Optionally, the bandwidth occupied by the second signal is determined by the number of resource blocks (RBs) occupied by the second signal;

[0378] wherein, the number of RBs occupied by the second signal is determined by the number of RBs occupied by the subcarriers occupied by the second signal, or by the number of subcarriers occupied by the second signal.

[0379] Optionally, the received power of the sensing target associated path is the linear average of the received power of the sensing target associated path in the channel response measured for the first signal on the resource units carrying the first signal.

[0380] Optionally, the processor is further configured to:

[0381] Perform channel estimation based on the first signal and the received signal corresponding to the first signal to obtain a channel response;

[0382] Transform the channel response to the first dimension;

[0383] Determine the sensing target associated path among the paths corresponding to the first dimension;

[0384] wherein, the first dimension includes at least one of the following:

[0385] Delay dimension;

[0386] Doppler dimension;

[0387] Azimuth angle dimension;

[0388] Pitch angle dimension.

[0389] Optionally, the processor is configured to:

[0390] In the path corresponding to the first dimension, select a path that meets the first condition as the perception target associated path;

[0391] Wherein, the first condition includes at least one of the following:

[0392] The third parameter of the path exceeds the first threshold or is within the first interval range;

[0393] The difference between the third parameter of the path and the third parameter of the first arrival path or the reference path exceeds the second threshold or is within the second interval range;

[0394] The fourth parameter of the path satisfies a preset modulation rule;

[0395] Wherein, the third parameter includes at least one of the following: amplitude, power, intensity, energy, Doppler, time delay, angle;

[0396] The fourth parameter includes at least one of the following: amplitude, power, intensity, energy, phase.

[0397] Optionally, the processor is configured to:

[0398] Determine a first path set in the paths corresponding to the first dimension, where the fifth parameter of each path in the first path set exceeds the third threshold, and the fifth parameter includes at least one of the following: amplitude, power, intensity, energy;

[0399] In the first path set, determine a path that meets the first condition as the perception target associated path.

[0400] Optionally, the communication interface is configured to:

[0401] Use a downlink receiving beam associated with the downlink transmission beam of the network side device to receive and measure a first signal transmitted by the network side device.

[0402] Preferably, an embodiment of the present application further provides a terminal, including a processor, a memory, a program or instruction stored on the memory and executable on the processor, and when the program or instruction is executed by the processor, it implements each process of the signal transmission method embodiment described above and can achieve the same technical effect. To avoid repetition, it will not be elaborated here. Specifically, Figure 7 FIG. is a schematic diagram of the hardware structure of a terminal for implementing an embodiment of the present application.

[0403] The terminal 700 includes, but is not limited to, at least some components such as a radio frequency unit 701, a network module 702, an audio output unit 703, an input unit 704, a sensor 705, a display unit 706, a user input unit 707, an interface unit 708, a memory 709, and a processor 710.

[0404] Those skilled in the art can understand that the terminal 700 may further include a power source (such as a battery) for powering each component. The power source may be logically connected to the processor 710 through a power management system, so as to implement functions such as management of charging, discharging, and power consumption management through the power management system. Figure 7 The terminal structure shown does not limit the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0405] It should be understood that in the embodiments of the present application, the input unit 704 may include a graphics processing unit (GPU) 7041 and a microphone 7042. The graphics processor 7041 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 706 may include a display panel 7061, and the display panel 7061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 707 includes at least one of a touch panel 7071 and other input devices 7072. The touch panel 7071 is also called a touch screen. The touch panel 7071 may include two parts: a touch detection device and a touch controller. The other input devices 7072 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 elaborated here.

[0406] In the embodiments of the present application, after the radio frequency unit 701 receives downlink data from an access network device, it can be transmitted to the processor 710 for processing; in addition, the radio frequency unit 701 can send uplink data to a network side device. Generally, the radio frequency unit 701 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0407] The memory 709 can be used to store software programs or instructions and various data. The memory 709 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data. Among them, the first storage area may store an operating system, application programs or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 709 may include a volatile memory or a non-volatile memory, or the memory 709 may include both a volatile memory and 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 (Synchronous DRAM, SDRAM), a double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), an enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), a synchronous link dynamic random access memory (Synch link DRAM, SLDRAM), and a direct rambus random access memory (Direct Rambus RAM, DRRAM). The memory 709 in the embodiments of the present application includes, but is not limited to, these and any other suitable types of memories.

[0408] The processor 710 may include one or more processing units; optionally, the processor 710 integrates an application processor and a modem processor. Among them, the application processor mainly processes operations related to the operating system, user interface, and application programs, etc., and the modem processor mainly processes wireless communication signals, such as a baseband processor. It can be understood that the above modem processor may not be integrated into the processor 710 either.

[0409] Among them, the processor 710 is used for:

[0410] Measure the first signal sent by the network-side device and obtain the received power of the perception target associated path;

[0411] Determine the transmission power of the second signal according to the received power of the perception target associated path;

[0412] Transmit the second signal to the network-side device using the said transmission power.

[0413] Optionally, the processor 710 is configured to:

[0414] Determine the transmission power of the second signal based on a first parameter;

[0415] Wherein, the first parameter includes: the maximum transmission power of the terminal, the target reception power, and the path loss parameter; or

[0416] The first parameter includes: the maximum transmission power of the terminal, the target reception power, the path loss parameter, and a second parameter; the second parameter includes at least one of the following: the bandwidth occupied by the second signal, the power adjustment value;

[0417] Wherein, the path loss parameter is determined based on the reception power of the sensed target associated path.

[0418] Optionally, the target reception power is equal to the preset reception power of the sensed target associated path; or

[0419] The target reception power is equal to the sum of the preset reception power of the sensed target associated path and the power offset.

[0420] Optionally, the preset reception power of the sensed target associated path is determined by the format of the second signal; or

[0421] The power offset is determined by the format of the second signal.

[0422] Optionally, the path loss parameter is a path loss factor, and the path loss factor is determined by the transmission power of the first signal indicated by the network-side device and the reception power of the sensed target associated path.

[0423] Optionally, the path loss parameter is determined by a path loss factor and a partial path loss compensation factor;

[0424] Wherein, the path loss factor is determined by the transmission power of the first signal indicated by the network-side device and the reception power of the sensed target associated path.

[0425] Optionally, the bandwidth occupied by the second signal is determined by the number of resource blocks (RBs) occupied by the second signal;

[0426] Wherein, the number of RBs occupied by the second signal is determined by the number of RBs occupied by the subcarriers occupied by the second signal, or by the number of subcarriers occupied by the second signal.

[0427] Optionally, the received power of the sensed target associated path is the linear average of the received power of the sensed target associated path in the channel response measured from the first signal on the resource unit carrying the first signal.

[0428] Optionally, the processor 710 is further configured to:

[0429] Perform channel estimation based on the first signal and the received signal corresponding to the first signal to obtain a channel response;

[0430] Transform the channel response into a first dimension;

[0431] Determine a sensed target associated path among the paths corresponding to the first dimension;

[0432] Wherein, the first dimension includes at least one of the following:

[0433] Delay dimension;

[0434] Doppler dimension;

[0435] Azimuth angle dimension;

[0436] Elevation angle dimension.

[0437] Optionally, the processor 710 is configured to:

[0438] Select a path that meets a first condition as the sensed target associated path among the paths corresponding to the first dimension;

[0439] Wherein, the first condition includes at least one of the following:

[0440] The third parameter of the path exceeds a first threshold or is within a first interval range;

[0441] The difference between the third parameter of the path and that of the first-arrival path or the reference path exceeds a second threshold or is within a second interval range;

[0442] The fourth parameter of the path meets a preset modulation rule;

[0443] Wherein, the third parameter includes at least one of the following: amplitude, power, intensity, energy, Doppler, delay, angle;

[0444] The fourth parameter includes at least one of the following: amplitude, power, intensity, energy, phase.

[0445] Optionally, the processor 710 is configured to:

[0446] Determine a first path set among the paths corresponding to the first dimension, where the fifth parameter of each path in the first path set exceeds a third threshold, and the fifth parameter includes at least one of the following: amplitude, power, intensity, energy;

[0447] In the first set of paths, determine the paths that meet the first condition as the perception target associated paths.

[0448] Optionally, the radio frequency unit 701 is configured to:

[0449] Use a downlink receiving beam associated with the downlink transmission beam of the network-side device to receive and measure a first signal transmitted by the network-side device.

[0450] Preferably, an embodiment of the present application further provides a terminal, including a processor, a memory, a program or instruction stored on the memory and executable on the processor. When the program or instruction is executed by the processor, it implements each process of the signal transmission method embodiment described above and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0451] An embodiment of the present application further provides a readable storage medium. A program or instruction is stored on the computer-readable storage medium. When the program or instruction is executed by the processor, it implements each process of the signal transmission method embodiment described above and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0452] Among them, the computer-readable storage medium is, for example, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disc, etc.

[0453] Such as Figure 8 As shown, the signal transmission device 800 according to an embodiment of the present application is applied to a network-side device and includes:

[0454] A second transmission module 801, configured to send a first signal to a terminal;

[0455] A receiving module 802, configured to receive a second signal sent by the terminal, where the transmission power of the second signal is determined by the received power of the perception target associated path obtained by the terminal through receiving the first signal.

[0456] Optionally, the device further includes:

[0457] A second determination module, configured to determine a target beam through a downlink sensing beam management process or an uplink sensing beam management process;

[0458] Among them, the target beam includes at least one of the following:

[0459] A downlink transmission beam;

[0460] A downlink receiving beam;

[0461] An uplink transmission beam;

[0462] Upward receiving beam.

[0463] Optionally, the device further includes:

[0464] A third transmitting module, configured to transmit a preset receiving power of the sensing target associated path to the terminal.

[0465] Optionally, the device further includes:

[0466] A fourth transmitting module, configured to transmit a transmitting power of the first signal to the terminal.

[0467] It should be noted that this device embodiment corresponds to the above method. All implementation manners in the above method embodiment are applicable to this device embodiment and can achieve the same technical effect.

[0468] The communication processing device provided in the embodiment of the present application can implement Figure 3 each process implemented by the method embodiment and achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0469] The embodiment of the present application further provides a network-side device, including a processor and a communication interface. The processor is configured to transmit a first signal to a terminal; receive a second signal sent by the terminal, and the transmitting power of the second signal is determined by the receiving power of the sensing target associated path obtained by the terminal through receiving the first signal.

[0470] Optionally, the processor is configured to:

[0471] Determine a target beam through a downlink sensing beam management process or an uplink sensing beam management process;

[0472] Wherein, the target beam includes at least one of the following:

[0473] Downlink transmitting beam;

[0474] Downlink receiving beam;

[0475] Uplink transmitting beam;

[0476] Uplink receiving beam.

[0477] Optionally, the communication interface is configured to:

[0478] Transmit the preset receiving power of the sensing target associated path to the terminal.

[0479] Optionally, the communication interface is configured to:

[0480] Transmit the transmitting power of the first signal to the terminal.

[0481] Specifically, the embodiments of the present application further provide a network-side device. As Figure 9 shown, the access network device 900 includes: an antenna 901, a radio frequency device 902, a baseband device 903, a processor 904, and a memory 905. The antenna 901 is connected to the radio frequency device 902. In the uplink direction, the radio frequency device 902 receives information through the antenna 901 and sends the received information to the baseband device 903 for processing. In the downlink direction, the baseband device 903 processes the information to be sent and sends it to the radio frequency device 902. After processing the received information, the radio frequency device 902 sends it out through the antenna 901.

[0482] In the above embodiments, the method executed by the network-side device can be implemented in the baseband device 903, and the baseband device 903 includes a baseband processor.

[0483] The baseband device 903 may include, for example, at least one baseband board, and a plurality of chips are arranged on the baseband board. As Figure 9 shown, one of the chips is, for example, a baseband processor, which is connected to the memory 905 through a bus interface to call the program in the memory 905 and execute the network device operations shown in the above method embodiments.

[0484] The network-side device may further include a network interface 906, and the interface is, for example, a common public radio interface (CPRI).

[0485] Specifically, the access network device 900 of the embodiments of the present application further includes: instructions or programs stored on the memory 905 and executable on the processor 904. The processor 904 calls the instructions or programs in the memory 905 to execute Figure 8 the methods executed by the respective modules shown, and achieves the same technical effects. To avoid repetition, they are not described herein again.

[0486] The embodiments of the present application further provide a readable storage medium. Programs or instructions are stored on the readable storage medium. When the programs or instructions are executed by a processor, the various processes of the above signal transmission method embodiments are implemented, and the same technical effects can be achieved. To avoid repetition, they are not described herein again.

[0487] Among them, the processor is the processor in the access network device described in the above embodiments. The readable storage medium may be non-volatile or non-transient. The readable storage medium may include a computer-readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk, or an optical disc, etc.

[0488] Optionally, as Figure 10As shown in the figure, an embodiment of the present application further provides a communication device 1000, which includes a processor 1001 and a memory 1002. A program or instruction that can run on the processor 1001 is stored on the memory 1002. For example, when the communication device 1000 is a terminal, when the program or instruction is executed by the processor 1001, each step of the above signal transmission method or information transmission method embodiment is implemented, and the same technical effect can be achieved. When the communication device 1000 is a network-side device, when the program or instruction is executed by the processor 1001, each step of the above signal transmission method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, details are not described here again.

[0489] Another embodiment of the present application provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run a program or instruction to implement each process of the above signal transmission method embodiment, and the same technical effect can be achieved. To avoid repetition, details are not described here again.

[0490] It should be understood that the chip mentioned in the embodiment of the present application may also be referred to as a system-on-chip, system chip, chip system, or system-on-chip.

[0491] Another embodiment of the present application provides a computer program / program product. The computer program / program product is stored in a storage medium. The computer program / program product is executed by at least one processor to implement each process of the above signal transmission method embodiment, and the same technical effect can be achieved. To avoid repetition, details are not described here again.

[0492] An embodiment of the present application further provides a communication system, which includes: a terminal and a network-side device. The terminal can be used to execute the steps of the above signal transmission method, and the network-side device can be used to execute the steps of the above signal transmission method.

[0493] It should be noted that in this text, the term "comprise", "include" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising such element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments 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 the reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0494] From the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments 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, magnetic disk, optical disk, etc.) and includes several instructions for causing a terminal or a network-side device to execute the methods described in the various embodiments of the present application.

[0495] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms of embodiments without departing from the purpose of the present application and the scope protected by the claims. These embodiments are all within the protection scope of the present application.

Claims

1. A signal transmission method, characterized in that, it includes: The terminal measures the first signal sent by the network-side device and obtains the received power of the path associated with the sensing target; The terminal determines the transmission power of the second signal according to the received power of the path associated with the sensing target; The terminal uses the transmission power to send the second signal to the network-side device.

2. The method according to claim 1, characterized in that, The step of determining the transmission power of the second signal according to the received power of the path associated with the sensing target includes: Determining the transmission power of the second signal based on a first parameter; wherein, the first parameter includes: the maximum transmission power of the terminal, the target received power, and the path loss parameter; or The first parameter includes: the maximum transmission power of the terminal, the target received power, the path loss parameter, and a second parameter; the second parameter includes at least one of the following: the bandwidth occupied by the second signal, the power adjustment value; wherein, the path loss parameter is determined based on the received power of the path associated with the sensing target.

3. The method according to claim 2, characterized in that, The target received power is equal to the preset received power of the path associated with the sensing target; or The target received power is equal to the sum of the preset received power of the path associated with the sensing target and the power offset.

4. The method according to claim 3, characterized in that, The preset received power of the path associated with the sensing target is determined by the format of the second signal; or The power offset is determined by the format of the second signal.

5. The method according to claim 2, characterized in that, The path loss parameter is a path loss factor, and the path loss factor is determined by the transmission power of the first signal indicated by the network-side device and the received power of the path associated with the sensing target.

6. The method according to claim 2, characterized in that, The path loss parameter is determined by a path loss factor and a partial path loss compensation factor; wherein, the path loss factor is determined by the transmission power of the first signal indicated by the network-side device and the received power of the path associated with the sensing target.

7. The method according to claim 2, characterized in that, The bandwidth occupied by the second signal is determined by the number of resource blocks (RBs) occupied by the second signal; wherein, the number of RBs occupied by the second signal is determined by the number of RBs occupied by the subcarriers occupied by the second signal, or by the number of subcarriers occupied by the second signal.

8. The method according to any one of claims 1-7, characterized in that, The received power of the path associated with the sensing target is the linear average of the received power of the path associated with the sensing target in the channel response obtained by measuring the first signal on the resource unit carrying the first signal.

9. The method according to claim 8, characterized in that, The method for obtaining the path associated with the sensing target includes: The terminal performs channel estimation on the first signal and the received signal corresponding to the first signal to obtain a channel response; Transforming the channel response to a first dimension; Among the paths corresponding to the first dimension, determining the path associated with the sensing target; Among them, the first dimension includes at least one of the following: Delay dimension; Doppler dimension; Azimuth angle dimension; Elevation angle dimension.

10. The method according to claim 9, characterized in that determining the perception target associated path in the path corresponding to the first dimension includes: selecting, in the path corresponding to the first dimension, a path that satisfies the first condition as the perception target associated path; wherein the first condition includes at least one of the following: the third parameter of the path exceeds a first threshold or is within a first interval range; the difference between the third parameter of the path and that of the first-arrival path or the reference path exceeds a second threshold or is within a second interval range; the fourth parameter of the path satisfies a preset modulation rule; wherein the third parameter includes at least one of the following: amplitude, power, intensity, energy, Doppler, delay, angle; the fourth parameter includes at least one of the following: amplitude, power, intensity, energy, phase.

11. The method according to claim 10, characterized in that selecting, in the path corresponding to the first dimension, a path that satisfies the first condition as the perception target associated path includes: determining a first path set in the path corresponding to the first dimension, where the fifth parameter of each path in the first path set exceeds a third threshold, and the fifth parameter includes at least one of the following: amplitude, power, intensity, energy; determining, in the first path set, a path that satisfies the first condition as the perception target associated path.

12. The method according to any one of claims 1-11, characterized in that measuring the first signal sent by the network side device includes: the terminal uses a downlink receiving beam associated with the downlink transmission beam of the network side device to receive and measure the first signal sent by the network side device.

13. A signal transmission method, characterized in that includes: the network side device sends a first signal to the terminal; the network side device receives a second signal sent by the terminal, and the transmission power of the second signal is determined by the received power of the perception target associated path obtained by the terminal through receiving the first signal.

14. The method according to claim 13, characterized in that further includes: determining a target beam through a downlink perception beam management process or an uplink perception beam management process; wherein the target beam includes at least one of the following: downlink transmission beam; downlink receiving beam; uplink transmission beam; uplink receiving beam.

15. The method according to claim 13, characterized in that further includes: the network side device sends the preset received power of the perception target associated path to the terminal.

16. The method according to claim 13, characterized in that further includes: the network side device sends the transmission power of the first signal to the terminal.

17. A signal transmission device, applied to a terminal, characterized in that includes: an acquisition module, configured to measure a first signal sent by a network side device and acquire the received power of a perception target associated path; a first determination module, configured to determine the transmission power of a second signal according to the received power of the perception target associated path; A first transmission module, configured to transmit the second signal to the network-side device by using the transmission power.

18. The apparatus according to claim 17, wherein, the first determination module is configured to: determine the transmission power of the second signal based on a first parameter; wherein the first parameter includes: the maximum transmission power of the terminal, the target reception power, and a path loss parameter; or the first parameter includes: the maximum transmission power of the terminal, the target reception power, the path loss parameter, and a second parameter; the second parameter includes at least one of the following: the bandwidth occupied by the second signal, and a power adjustment value; wherein the path loss parameter is determined based on the reception power of the sensing target associated path.

19. The apparatus according to claim 18, wherein, the target reception power is equal to a preset reception power of the sensing target associated path; or the target reception power is equal to the sum of a preset reception power of the sensing target associated path and a power offset.

20. The apparatus according to claim 19, wherein, the preset reception power of the sensing target associated path is determined by the format of the second signal; or the power offset is determined by the format of the second signal.

21. The apparatus according to claim 18, wherein, the path loss parameter is a path loss factor, and the path loss factor is determined by the transmission power of the first signal indicated by the network-side device and the reception power of the sensing target associated path.

22. The apparatus according to claim 18, wherein, the path loss parameter is determined by a path loss factor and a partial path loss compensation factor; wherein the path loss factor is determined by the transmission power of the first signal indicated by the network-side device and the reception power of the sensing target associated path.

23. The apparatus according to claim 18, wherein, the bandwidth occupied by the second signal is determined by the number of resource blocks (RBs) occupied by the second signal; wherein the number of RBs occupied by the second signal is determined by the number of RBs occupied by the subcarriers occupied by the second signal, or by the number of subcarriers occupied by the second signal.

24. The apparatus according to any one of claims 17-23, wherein, the reception power of the sensing target associated path is a linear average value of the reception power of the sensing target associated path in the channel response measured for the first signal on the resource units carrying the first signal.

25. A terminal, wherein, comprising a processor and a memory, the memory storing a program or instruction that can run on the processor, and when the program or instruction is executed by the processor, the steps of the signal transmission method according to any one of claims 1 to 12 are implemented.

26. A signal transmission apparatus, applied to a network-side device, wherein, comprising: a second transmission module, configured to transmit a first signal to a terminal; a reception module, configured to receive a second signal sent by the terminal, and the transmission power adopted by the second signal is determined by the reception power of the sensing target associated path obtained by the terminal through receiving the first signal.

27. The device according to claim 26, wherein, it further comprises: a second determination module, configured to determine a target beam through a downlink sensing beam management process or an uplink sensing beam management process; wherein, the target beam includes at least one of the following: a downlink transmission beam; a downlink reception beam; an uplink transmission beam; an uplink reception beam.

28. A network-side device, wherein, it includes a processor and a memory, the memory stores a program or instruction that can run on the processor, and when the program or instruction is executed by the processor, it implements the steps of the signal transmission method according to any one of claims 13 to 16.

29. A readable storage medium, wherein, the readable storage medium stores a program or instruction, and when the program or instruction is executed by a processor, it implements the steps of the signal transmission method according to any one of claims 1-16.

Images