Signal transmission methods and apparatuses, terminal and network side device

Abstract

The present application belongs to the technical field of communications. Disclosed are signal transmission methods and apparatuses, a terminal and a network side device. A signal transmission method of the embodiments of the present application comprises: a terminal measures a first signal sent by a network side device, and acquires the receiving power of the associated path of a sensing target; on the basis of the receiving power of the associated path of the sensing target, the terminal determines the sending power of a second signal; and the terminal uses the sending power to send the second signal to the network side device.

Description

Signal transmission method, device, terminal and network side equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese Patent Application No. 202311693818.1 filed in China on December 11, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application belongs to the field of communication technology, and specifically relates to a signal transmission method, apparatus, terminal and network-side equipment. Background Art

[0004] Future mobile communication systems, such as those beyond the fifth generation (B5G) or 6G systems, will possess not only communication capabilities but also perception capabilities. Perception refers to the ability of one or more devices to sense the position, distance, and speed of a target object through the transmission and reception of wireless signals, or to detect, track, identify, and image a target object, event, or environment. With the deployment of small base stations with high-frequency and large-bandwidth capabilities, such as millimeter-wave and terahertz frequencies, in 6G networks, the perception resolution will be significantly improved compared to centimeter-wave, enabling 6G networks to provide more refined perception services.

[0005] Currently, the New Radio (NR) protocol supports uplink power control methods for communication services. However, uplink power control methods for wireless sensing or integrated communication are still unclear. Summary of the Invention

[0006] The embodiments of the present application provide a signal transmission method, apparatus, terminal, and network-side equipment to implement uplink power control for wireless perception or synaesthesia integration.

[0007] In a first aspect, a signal transmission method is provided, the method comprising:

[0008] The terminal measures the first signal sent by the network side device to obtain the received power of the perception target association path;

[0009] The terminal determines, according to the received power of the perception target association path, the transmit power of the second signal;

[0010] The terminal sends the second signal to the network side device using the transmission power.

[0011] In a second aspect, a signal transmission device is provided, which is applied to a terminal and includes:

[0012] An acquisition module, configured to measure a first signal sent by a network-side device and obtain a received power of a perception target association path;

[0013] A first determining module, configured to determine a transmit power of a second signal according to a receive power of the sensing target association path;

[0014] The first sending module is configured to send the second signal to the network side device using the sending power.

[0015] In a third aspect, a signal transmission method is provided, the method comprising:

[0016] The network side device sends a first signal to the terminal;

[0017] The network-side device receives a second signal sent by the terminal, where the transmission power used by the second signal is determined by the reception power of the perception target association path obtained by the terminal by receiving the first signal.

[0018] In a fourth aspect, a signal transmission device is provided, which is applied to a network-side device, including:

[0019] A second sending module, configured to send a first signal to a terminal;

[0020] The receiving module is configured to receive a second signal sent by the terminal, where the transmission power used by the second signal is determined by the reception power of the perception target association path obtained by the terminal by receiving the first signal.

[0021] In a fifth aspect, a terminal is provided, comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0022] In a sixth aspect, a terminal is provided, including a processor and a communication interface, wherein the processor is configured to measure a first signal sent by a network-side device to obtain a received power of a perception target association path;

[0023] determining a transmit power of a second signal according to a receive power of the sensing target association path;

[0024] The second signal is sent to the network side device using the transmit power.

[0025] In the seventh aspect, a network side device is provided, comprising a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the third aspect are implemented.

[0026] In an eighth aspect, a network-side device is provided, including a processor and a communication interface, wherein the communication interface is used by the network-side device to send a first signal to a terminal;

[0027] A second signal sent by the terminal is received, where the transmission power used by the second signal is determined by the reception power of the perception target association path obtained by the terminal by receiving the first signal.

[0028] In a ninth aspect, a communication system is provided, comprising: a terminal and a network-side device, wherein 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.

[0029] In a tenth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect or the third aspect are implemented.

[0030] In the eleventh aspect, a chip is provided, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps of the method described in the first aspect or the third aspect.

[0031] In a twelfth aspect, a computer program / program product is provided, wherein the computer program / program product is stored in a storage medium, and the 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.

[0032] In an embodiment of the present application, the transmission power of the second signal is determined by measuring the received power of the perception target association path obtained by the first signal sent by the network side device; then, based on the transmission power, the second signal is sent to the network side device; thereby, uplink power control for wireless perception or synaesthesia integration can be achieved to ensure the reliability of perception. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] FIG1 is a block diagram of a wireless communication system to which embodiments of the present application may be applied;

[0034] Figure 2 is a schematic diagram of different perception modes of communication perception integration;

[0035] FIG3 is a flow chart of a signal transmission method according to an embodiment of the present application;

[0036] FIG4 is a schematic diagram of multipath of a channel response in a first dimension;

[0037] FIG5 is a second flow chart of the signal transmission method according to an embodiment of the present application;

[0038] FIG6 is a schematic diagram of a module of a signal transmission device according to an embodiment of the present application;

[0039] FIG7 is a schematic structural diagram of a terminal according to an embodiment of the present application;

[0040] FIG8 is a second schematic diagram of a module of a signal transmission device according to an embodiment of the present application;

[0041] FIG9 is a schematic structural diagram of a network-side device according to an embodiment of the present application;

[0042] FIG10 is a schematic structural diagram of a communication device according to an embodiment of the present application. DETAILED DESCRIPTION

[0043] The following will be combined with the accompanying drawings in the embodiments of this application to clearly describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0044] The terms "first", "second", etc. in this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same type, and do not limit the number of objects, for example, the first object can be one or more. In addition, "or" in this application represents at least one of the connected objects. For example, "A or B" covers three options, namely, Option 1: including A but not including B; Option 2: including B but not including A; Option 3: including both A and B. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0045] The term "indication" in this application can be either a direct indication (or explicit indication) or an indirect indication (or implicit indication). A direct indication can be understood as the sender explicitly informing the receiver of specific information, the operation to be performed, or the requested result, etc. in the instruction sent; an indirect indication can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the operation to be performed or the requested result, etc. based on the judgment result.

[0046] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) or other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the technology described can be used for the systems and radio technologies mentioned above, as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for illustrative purposes, and NR terminology is used in most of the following description, but these technologies can also be applied to systems other than NR systems, such as 6th generation (6G) systems. th Generation, 6G) communication system.

[0047] FIG1 is a block diagram of a wireless communication system applicable to an embodiment of the present application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (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 (Wearable Device), an aircraft (Flight Vehicle), a vehicle-mounted device (VUE), a ship-mounted device, a pedestrian user equipment (PUE), a smart home (home appliances with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), a game console, a personal computer (PC), an ATM, or a self-service machine, or other terminal-side devices. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle-mounted device can also be called a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 may include an access network device or a core network device, wherein the access network device may also be called a radio access network (Radio Access Network, RAN) device, a radio access network function or a radio access network unit. The access network device may include a base station, a wireless local area network (Wireless Local Area Network, WLAN) access point (Access Point, AP) or a wireless fidelity (Wireless Fidelity, WiFi) node, etc.Among them, the base station 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 (home evolved Node B), Transmission Reception Point (TRP) or other appropriate terms in the field. As long as the same technical effect is achieved, the base station is not limited to specific technical vocabulary. It should be noted that in the embodiment of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

[0048] 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 mobility management function (AMF), session management function (SMF), user plane function (UPF), policy control function (PCF), policy and charging rules function unit (PCRF), edge application server discovery function (EASDF), unified data management (UDM), unified data storage (UDR), home user server (HSS), centralized network configuration (CNC), network storage function (NRF), network exposure function (NEF), local NEF (L-NEF), binding support function (BNSF), network access function (UE ... Function, BSF), application function (Application Function, AF), etc. It should be noted that in the embodiment of the present application, only the core network device in the NR system is introduced as an example, and the specific type of the core network device is not limited.

[0049] The following first describes the technologies related to the embodiments of the present application.

[0050] 1. Communication and Perception Integration

[0051] Future mobile communication systems, such as B5G or 6G, will possess not only communication capabilities but also perception capabilities. Perception refers to the ability of one or more devices to sense the position, distance, and speed of a target object through the transmission and reception of wireless signals, or to detect, track, identify, and image a target object, event, or environment. With the deployment of small base stations with high-frequency and large-bandwidth capabilities, such as millimeter-wave and terahertz signals, in 6G networks, the perception resolution will be significantly improved compared to centimeter-wave signals, enabling 6G networks to provide more refined perception services. Typical perception functions and application scenarios are shown in Table 1.

[0052] Table 1 Comparison of typical perception functions and application scenarios

[0053] Communication and perception integration (abbreviated as synaesthesia integration) is to achieve the integrated design of communication and perception functions through spectrum sharing and hardware sharing in the same system. While transmitting information, the system can perceive information such as direction, distance, and speed, and detect, track, and identify target devices or events. The communication system and the perception system complement each other to achieve overall performance improvement and bring a better service experience.

[0054] The integration of communications and radar is a typical application of communication-perception integration (communication-perception fusion). In the past, radar and communication systems were strictly separated due to their different research objectives and focus, and in most scenarios, the two systems were studied independently. In reality, radar and communication systems are both typical means of transmitting, acquiring, processing, and exchanging information, and they share many similarities in their operating principles, system architecture, and frequency bands. The design of integrated communications and radar is highly feasible, primarily due to the following aspects: First, both communications and perception systems are based on electromagnetic wave theory, utilizing the transmission and reception of electromagnetic waves to acquire and transmit information. Second, both communications and perception systems possess antennas, transmitters, receivers, and signal processors, resulting in significant overlap in hardware resources. With technological advancement, the operating frequency bands between the two systems are increasingly overlapping. Furthermore, there are similarities in key technologies such as signal modulation, reception detection, and waveform design. The integration of communications and radar systems can bring many advantages, such as cost savings, size reduction, power consumption reduction, improved spectrum efficiency, and reduced mutual interference, thereby improving overall system performance.

[0055] There are six basic sensing modes, depending on the difference between the sending and receiving nodes of the sensing signal, as shown in Figure 2:

[0056] (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.

[0057] (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.

[0058] (3) Uplink air interface perception: At this time, base station A receives the perception signal sent by terminal A and performs perception measurement.

[0059] (4) Downlink air interface perception: At this time, terminal B receives the perception signal sent by base station B and performs perception measurement.

[0060] (5) Terminal echo perception: At this time, terminal A sends a perception signal and performs perception measurement by receiving the echo of the perception signal.

[0061] (6) Sidelink sensing between terminals: At this time, terminal B receives the sensing signal sent by terminal A and performs sensing measurements.

[0062] It's worth noting that each perception mode in Figure 2 uses one sensing signal transmitting node and one sensing signal receiving node as examples. In actual systems, one or more different perception modes can be selected based on different sensing use cases and requirements, and each perception mode can have one or more transmitting and receiving nodes. The perception targets in Figure 2 use people and vehicles as examples, assuming neither person nor vehicle carries or has installed signal transceiver / receiver equipment. In actual scenarios, the range of perception targets will be much richer.

[0063] 2. New Radio (NR) Power Control

[0064] The NR protocol defines power control for the uplink Physical Uplink Shared Channel (PUSCH), Physical Uplink Control Channel (PUCCH), Sounding Reference Signal (SRS), and Physical Random Access Channel (PRACH).

[0065] PUSCH: If a user equipment (UE) transmits a PUSCH on an activated uplink (UL) bandwidth part (BWP) b of carrier f in serving cell c using a parameter set configuration with index j and a PUSCH power control adjustment state with index l, the UE determines the PUSCH transmit power for PUSCH transmission occasion i to be P PUSCH,b,f,c (i,j,q d,l), is expressed by the following formula 1:

[0066] Formula 1:

[0067] Note: Parameter j is used to indicate the parameter configuration index of open-loop power control (e.g., j = 0 indicates PUSCH arriving in RACH, j = 1 indicates PUSCH associated with Configured Grant, j > = 2 indicates PUSCH with dynamic grant), parameter l is used to indicate the process index of closed-loop power control, q d Indicates the reference signal index.

[0068] Among them, P CMAX,f,c (i) represents the maximum transmit power of the UE at time i, for the carrier and cell;

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

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

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

[0073] The number of resource blocks (RBs) used by the PUSCH at time i. Combined with the subcarrier spacing (SCS), this determines the total PUSCH bandwidth, which is defined for BWP, carrier, and 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 transmit power control (TPC) commands at the past time, that is, Wherein, δPUSCH,b,f,c(m,l) is the power adjustment value indicated by the mth TPC command of the lth closed-loop power control process, which is defined for BWP, carrier and cell.

[0075] PUCCH: If a terminal sends a PUCCH using the PUCCH power control adjustment state of index 1 on the activated UL BWP b of carrier f in primary cell c, the terminal determines the PUCCH transmit power of PUCCH transmission occasion i to be P PUCCH,b,f,c (i,q u ,q d ,l), is expressed by the following formula 2:

[0076] Formula 2:

[0077] in:

[0078] P CMAX,f,c (i) is the maximum transmit power of the UE at time i, specific to the carrier and cell;

[0079] P O_PUSCH,b,f,c (j) is the target received power (on one 15kHz SCS RB) of the open-loop control configuration index j, which is defined for BWP, carrier, and cell;

[0080] PL b,f,c (q d ) is the reference signal q used by the UE d The estimated downlink path loss is defined by S for BWP, carrier, and cell;

[0081] 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 BWP, carrier, and cell;

[0082] Δ TF,b,f,c (i) defines the transmit power required by the UE for each RE at time i. It is defined for BWP, carrier, and cell and is only used for single-layer transmission. It is 0 for multi-layer transmission.

[0083] It is the number of RBs for PUSCH at time i. Combined with the subcarrier spacing (SCS), it determines the total bandwidth of PUSCH, which is defined for BWP, carrier, and cell.

[0084] 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 the past time, that is, Wherein, δPUSCH,b,f,c(m,l) is the power adjustment value indicated by the mth TPC command of the lth closed-loop power control process, which is defined for BWP, carrier and cell.

[0085] PUCCH: If a terminal uses the PUCCH power control adjustment state indexed as l to transmit PUCCH on the activated UL BWP b of carrier f in primary cell c, the terminal determines the PUCCH transmission power in PUCCH transmission occasion i as P PUCCH,b,f,c (i,q u ,q d ,l), is expressed by the following formula 3:

[0086] Formula 3:

[0087] Description: q u It is the index of PUCCH (UE may need to transmit multiple PUCCHs at the same time). The difference between it and PUSCH is as follows:

[0088] 1. No partial path loss compensation factor;

[0089] 2. P O_PUCCH,b,f,c (q u ) is the qth u The target received power of each PUCCH is defined for BWP, carrier and cell;

[0090] 3. Δ F_PUCCH (F) indicates the power control bias that needs to be introduced for different PUCCH formats (F), such as

[0091] delta-PUCCH-fo is applicable to PUCCH format 0, delta-PUCCH-f1 is applicable to PUCCH format 1, delta-PUCCH-f2 is applicable to PUCCH format 2, and delta-PUCCH-f3 is applicable to PUCCH format 3. If available, delta-PUCCH-f4 is used for PUCCH format 4; otherwise, delta F_PUCCH (F) = 0;

[0092] 4. g b,f,c (i, l) is the offset value introduced by the closed-loop power control process l at time i, and is the sum of the power adjustment values ​​indicated by the TPC commands at past time points.

[0093] SRS: If a terminal uses the SRS power control adjustment state indexed as I to transmit SRS on the activated UL BWP b of the carrier f of the serving cell c according to the configuration of the SRS-resourceset, the terminal determines the SRS transmission power of SRS transmission occasion i as PSRS,b,f,c (i,q s ,l), is expressed by the following formula 4:

[0094] Formula 4:

[0095] The differences from PUSCH are as follows:

[0096] P O_SRS,b,f,c (q s ) is the qth s The SRS target received power of each SRS resource set is defined for BWP, carrier and cell;

[0097] M SRS,b,f,c (i) is the number of RBs of SRS at time i. Combined with SCS, it determines the total bandwidth of SRS, which is defined for BWP, carrier and cell;

[0098] α SRS,b,f,c (q s ) is the SRS resource set q s The partial path loss compensation factor is defined for BWP, carrier and cell;

[0099] h b,f,c (i, l) is the offset value introduced by closed-loop power control process l at time i, which can be the same as the PUSCH power control offset value, or (when there is no PUSCH transmission) the sum of the power adjustment values ​​indicated by the TPC commands at past time points.

[0100] PRACH: A UE determines the transmission power P of a PRACH PRACH,b,f,c (i) The activated UL BWP b of cell c carrier f based on the downlink reference signal (DL RS) of cell c in transmission scenario i is expressed by the following formula 5:

[0101] Formula 5, P PRACH,b,f,c (i) = min{P CMAX,f,c (i),P PRACH,target,f,c +PL b,f,c}[dBm].

[0102] The differences from PUSCH are as follows:

[0103] P PRACH,target,f,c is the target received power of PRACH, given by PREAMBLE_RECEIVED_TARGET_POWER, which is defined for BWP, carrier and cell;

[0104] PL b,f,cIt is the downlink path loss estimated by the UE using the uniquely associated reference signal (referenceSignalPower–higher layer filtered RSRP in dBm), which is defined for BWP, carrier, and cell.

[0105] Currently, the power control mechanism for uplink sensing signals is not clear.

[0106] The signal transmission method, apparatus, terminal, and network-side equipment provided in the embodiments of the present application are described in detail below with reference to some embodiments and their application scenarios in conjunction with the accompanying drawings.

[0107] As shown in FIG3 , an embodiment of the present application provides a signal transmission method, including:

[0108] Step 301: The terminal measures a first signal sent by a network-side device to obtain a received power of a perception target correlation path;

[0109] Step 302: The terminal determines the transmit power of the second signal according to the receive power of the perception target association path;

[0110] Step 303: The terminal sends the second signal to the network side device using the transmission power.

[0111] It should be noted that the embodiment of the present application determines the transmission power of the second signal by measuring the received power of the perception target association path obtained by the first signal sent by the network side device; and then sends the second signal to the network side device based on the transmission power; thereby realizing uplink power control for wireless perception or synaesthesia integration, and ensuring the reliability of perception.

[0112] Optionally, the first signal mentioned in the embodiment of the present application is sent by the network side device to the terminal; the first signal may be a dedicated signal for sensing the service, a communication signal (for example, a reference signal (such as a channel state information reference signal Channel State Information-Reference Signal, CSI-RS), a tracking reference signal (Tracking Reference Signal, TRS)), a synchronization signal, etc.) or other signal. The second signal may be a dedicated signal for sensing the service, a communication signal (for example, a sounding reference signal (SRS)) or other signal.

[0113] It should be noted that before 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;

[0114] The target beam includes at least one of the following:

[0115] A11, downlink transmit beam;

[0116] A12, downlink receive beam;

[0117] A13, uplink transmit beam;

[0118] A14, uplink receive beam.

[0119] That is to say, the network side equipment needs to determine the downlink transmit beam, or the beam pair consisting of the downlink transmit beam and the downlink receive beam, or the uplink transmit beam, or the beam pair consisting of the uplink transmit beam and the uplink receive beam 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).

[0120] Optionally, in this manner, the first signal and the downlink transmit beam determined by the downlink sensing beam management process or the uplink sensing beam management process are quasi-co-located; optionally, in this manner, the terminal uses the downlink receive beam associated with the downlink transmit beam determined by the downlink sensing beam management process or the uplink sensing beam management process (i.e., the same beam pair) to measure, receive and measure the first signal sent by the network side device.

[0121] Optionally, in one implementation, the specific implementation of determining the transmit power of the second signal according to the receive power of the perception target association path includes:

[0122] determining a transmit power of the second signal based on the first parameter;

[0123] Optionally, the specific form of the second parameter can be one of the following:

[0124] The specific form of the second parameter 1. The first parameter includes:

[0125] A21, the maximum transmit power of the terminal;

[0126] It should be noted that the maximum transmit power of the terminal is directly obtainable by the terminal according to its own configuration.

[0127] A21, target received power;

[0128] Optionally, in the first implementation manner, the target received power is equal to a preset received power (ReceivedTargetPower) of the perception target association path.

[0129] It should be noted that the preset receive power of the perception target association path is configured by the network-side device and sent to the terminal. For example, the preset receive power of the perception target association path is a parameter configured by the network-side device through Radio Resource Control (RRC) signaling to achieve perception performance at the target receive power. For example, the core network perception network function determines that the ReceivedTargetPower must be greater than -100dBm based on the perception accuracy in the perception requirement, such as 95%.

[0130] Optionally, in one implementation, the preset receiving power of the perception target association path is determined by the format of the second signal. It can be understood that different second signal formats correspond to different values ​​of the preset receiving power of the perception target association path.

[0131] It should be noted that the format of the second signal includes the sequence format and bandwidth (eg, the number of subcarriers or the number of RBs) of the second signal.

[0132] For example, the comparison between the format of the second signal and the preset receiving power of the perception target correlation path is shown in Table 2.

[0133] Table 2 Comparison between the format of the second signal and the preset receiving power of the perception target correlation path

[0134] Optionally, in the second implementation manner, the target received power is equal to the sum of a preset received power of the perception target association path and a power offset.

[0135] Optionally, in one implementation, the power offset is determined by the format of the second signal; or, the preset receiving power of the perception target association path is determined by the format of the second signal.

[0136] It should be noted that the power offset (DELTA) value corresponding to the format of the second signal (see the table below) is defined by the protocol or notified to the terminal by the network-side device. When the power offset is determined by the format of the second signal, different second signal formats correspond to different power offset values. For example, the comparison between the second signal format and the power offset value is shown in Table 3.

[0137] Table 3 Comparison between the format of the second signal and the value of the power offset

[0138] It should be noted that, when the power offset is introduced, the network-side device can usually configure the same preset receiving power of the perception target association path for different second signal formats.

[0139] A23, path loss parameter;

[0140] It should be noted that the path loss parameter is determined based on the received power of the perception target associated path.

[0141] Optionally, in the first implementation manner, 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 perception target association path.

[0142] For example, the path loss factor is determined by the following formula:

[0143] PathLoss factor = reference signal power - first indicator;

[0144] Among them, PathLoss factor is the path loss factor, the first indicator is the received power of the perceived target association path obtained by the terminal measuring the first signal; reference signal power is the transmit power of the first signal, and the reference signal power is notified to the terminal by the network side device, for example, the network side device broadcasts it through System Information Block (SIB) signaling; the first signal is a signal sent by the base station, such as a synchronization signal, CSI-RS, or other signals;

[0145] It should be noted that the difference between the reference signal power and the received power of the perception target associated path can better reflect the perception path loss (i.e., the path loss from the perception signal from the transmitter to the receiver after being transmitted by the perception target).

[0146] Optionally, in the second implementation manner, the path loss parameter is determined by a path loss factor and a partial path loss compensation factor.

[0147] Optionally, the path loss parameter is the product of a path loss factor and a partial path loss compensation factor.

[0148] 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 alleviate the uplink co-channel interference between cells; optionally, in order to ensure perception performance, at least when the uplink co-channel interference in the cell is not serious or interference coordination measures are taken, the path loss factor can be set equal to 1 (that is, full path loss compensation), or even the path loss factor can be greater than 1, to provide some margin for the receiving power of the perception target associated path to ensure perception performance.

[0149] The specific form of the second parameter 2, the first parameter includes:

[0150] A31, the maximum transmit power of the terminal;

[0151] A32, target received power;

[0152] A33, path loss parameter;

[0153] A34, second parameter;

[0154] The second parameter includes at least one of the following:

[0155] A341, bandwidth occupied by the second signal;

[0156] Optionally, in one implementation, the bandwidth occupied by the second signal is determined by the number of RBs occupied by the second signal.

[0157] 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, which, combined with the SCS subcarrier spacing, determines the total bandwidth of the second signal. 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 spacing of 15 kHz, 30 kHz, 60 kHz and 120 kHz, respectively.

[0158] Optionally, in the first implementation manner, the number of RBs occupied by the second signal is determined by the number of RBs occupied by subcarriers occupied by the second signal;

[0159] This situation can be understood as the number of RBs occupied by the second signal is determined by the number of RBs spanned by the second signal, that is, some RBs do not occupy all subcarriers, but only occupy some subcarriers, then the RB is also considered to be one of the RBs spanned by the first signal.

[0160] 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.

[0161] 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, an integer value can be obtained by rounding up or rounding down; for example, if the first signal occupies 50% of the subcarriers of an RB, then the RB is considered to be 0.5 RBs, and 1 RB is obtained by rounding up.

[0162] It should be noted that this approach considers the impact of frequency-domain non-uniform perception signals or perception signals with varying frequency-domain densities. To maintain a constant transmit power for a terminal within a time slot, a signal pattern can be designed to ensure that the frequency-domain resources used by the symbols transmitting the perception signal (i.e., the second signal) within a slot are identical, resulting in the same transmit power for each symbol within the slot. Alternatively, the average number of RBs within a time window (e.g., a slot) can be calculated and used to determine the transmit power for the terminal within that slot.

[0163] A342, power adjustment value;

[0164] 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 indicates the power adjustment value by two bits of downlink control information (DCI):

[0165] Table 4 Correspondence between different DCI bits and power adjustment values

[0166] The following describes in detail how to determine the transmission power of the second signal.

[0167] Case 1: The first parameters include: the maximum transmit power, target receive power, and path loss parameters of the terminal.

[0168] It should be noted that this situation can be understood as open-loop power control, and the terminal can determine the transmit power of the second signal according to the following formula: Tx Power = MAX{P-MAX, (Target Rx Power + α·PathLoss factor)};

[0169] Among them, Tx Power is the transmission power of the second signal; P-MAX is the maximum transmission power of the terminal; Target Rx Power is the target receiving power; α is the partial path loss compensation factor; PathLoss factor is the path loss factor.

[0170] Case 2: The first parameter includes: the maximum transmit power, target receive power, path loss parameter of the terminal, and a second parameter, where the second parameter includes a power adjustment value.

[0171] It should be noted that this situation can be understood as closed-loop power control, and the terminal can determine the transmit power of the second signal according to the following formula: Tx Power = MAX{P-MAX, (Target Rx Power + α·PathLoss factor + Power Control Command)};

[0172] Among them, Power Control Command is the power adjustment value.

[0173] Case three: the first parameter includes: the maximum transmit power, target receive power, path loss parameter of the terminal, and a second parameter, where the second parameter includes the bandwidth occupied by the second signal.

[0174] It should be noted that this situation can be understood as open-loop power control, and the terminal can determine the transmit power of the second signal according to the following formula: Tx Power = MAX{P-MAX, (Target Rx Power + α·PathLoss factor + RB factor)};

[0175] Here, RB factor is the bandwidth occupied by the second signal.

[0176] Case 4: The first parameter includes: the maximum transmit power, target receive power, path loss parameter, and second parameter of the terminal, and the second parameter includes the bandwidth occupied by the second signal and the power adjustment value.

[0177] It should be noted that this situation can be understood as closed-loop power control, and the terminal can determine the transmit power of the second signal according to the following formula: Tx Power = MAX{P-MAX, (Target Rx Power + α·PathLoss factor + RB factor + Power Control Command)}.

[0178] It should be noted that the calculation method of the transmission power of the second signal in the embodiment of the present application only focuses on the parameters related to the perception path. Of course, other parameters can also be introduced into the calculation formula of the received power, such as factors related to the modulation and coding scheme (MCS) in NR power control.

[0179] It should also be noted that after the terminal determines the transmit power according to the above power control formula, it needs to report transmit power related information (absolute power value or power headroom) to the network side device.

[0180] Optionally, in one implementation, the received power of the perception target association path mentioned in the embodiment of the present application is a linear average value of the received power of the perception target association path in the channel response obtained by measuring the first signal on the resource unit carrying the first signal.

[0181] It should be noted that the perception target associated path can also be called a path associated with the perception target.

[0182] It can be understood here that the sensing target association path may be distributed across multiple resource units, and the received power of the sensing target association path is ultimately determined by linearly averaging the received powers of the sensing target association paths across the multiple resource units. The unit of the received power of the sensing target association path is watts (W).

[0183] It should be noted here that the resource unit may be at least one of a frequency domain unit and a time domain unit.

[0184] Optionally, the method for acquiring the perception target correlation path includes:

[0185] Step a1: The terminal performs channel estimation based on the first signal and a received signal corresponding to the first signal to obtain a channel response;

[0186] Step a2: transforming the channel response into a first dimension;

[0187] The first dimension includes at least one of the following:

[0188] Delay dimension;

[0189] Doplevi;

[0190] Azimuth dimension;

[0191] Pitch angle dimension.

[0192] For example, when the first dimension includes the delay dimension and the Doppler dimension, it can be called the delay-Doppler dimension; when the first dimension includes the delay dimension, the Doppler dimension and the azimuth angle, it can be called the delay-Doppler-angle dimension.

[0193] Step a3: determining a perception target associated path in the paths corresponding to the first dimension;

[0194] Optionally, the specific implementation of determining the perception target association path in this step includes:

[0195] Among the paths corresponding to the first dimension, selecting a path that meets a first condition as the perception target associated path;

[0196] The first condition includes at least one of the following:

[0197] A41. The third parameter of the path exceeds the first threshold or is within the first interval;

[0198] The third parameter includes at least one of the following: amplitude, power, intensity, energy, Doppler, delay, and angle;

[0199] It should be noted here that different third parameters correspond to different values ​​of the first threshold, or different third parameters correspond to different range values ​​of the first interval.

[0200] For example, the third threshold is 5 times greater than the noise threshold.

[0201] A42, the difference between the third parameter of the path and the first-reach path or the reference path exceeds the second threshold or is within the second interval;

[0202] For example, the first arrival path may be a line of sight (LOS) path. For example, the reference path may be a signal path reflected by a known target (such as a reconfigurable intelligent surface (RIS) / backscatter / other known passive targets, etc.).

[0203] A43, the fourth parameter of the path satisfies the preset modulation rule;

[0204] The fourth parameter includes at least one of the following: amplitude, power, intensity, energy, and phase.

[0205] Optionally, the preset modulation rule is a modulation rule of a tag (Tag) / backscatter device or RIS, that is, the perception target associated path may be a path modulated and reflected by the Tag / backscatter device or RIS.

[0206] It should be noted that after transforming the channel response to the first dimension, the terminal can directly select a path that satisfies the first condition as the perception target associated path based on the path corresponding to the first dimension; of course, in order to improve the efficiency of selection, the embodiment of the present application also provides another selection method, that is, optionally, selecting a path that satisfies the first condition from the path corresponding to the first dimension as the specific implementation of the perception target associated path includes:

[0207] Determining a first path set from the paths corresponding to the first dimension, wherein a fifth parameter of each path in the first path set exceeds a third threshold, the fifth parameter comprising at least one of the following: amplitude, power, intensity, and energy;

[0208] In the first path set, a path that meets a first condition is determined as the perception target associated path.

[0209] It should be noted here that the third thresholds corresponding to different fifth parameters may be different or the same.

[0210] This approach can be understood as first determining a set of paths within a small range from the paths corresponding to the first dimension, and then determining the path associated with the perceived target from this set. In other words, the third threshold is the detection threshold of the first path set.

[0211] 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.

[0212] For example, as shown in Figure 4, paths 0, 1, 2, and 3 are path lengths in the first path set. Paths 2 and 3 are perceived as path lengths whose amplitude, power, intensity, or energy exceeds the fifth threshold. Paths 0 and 1 are path lengths associated with other scatterers. It should be noted that the horizontal axis in Figure 4 represents the first dimension, and the vertical axis represents the normalized amplitude, power, intensity, and energy.

[0213] For frequency range 1, the reference point for the first metric can be the terminal's antenna connector. For frequency range 1, if the terminal has multiple receiving channels, the first metric measured and reported by the terminal cannot be lower than the metric of any single receiving channel. For frequency range 2, the first metric measured for a receiving channel must be measured using the combined signals from the multiple antenna elements corresponding to that receiving channel.

[0214] For example, a first specific acquisition process of the received power of the perceived target association path may be:

[0215] 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 a channel response (Channel Response) H(k) = Y(k) / X(k), where k represents a resource unit index, k = 0, 1, 2, ..., K-1. After obtaining the channel response H(k), the terminal transforms it into a first dimension and determines a perception target association path in the first dimension. The received power of the perception target association path is then calculated. If the perception target association path includes multiple paths, the sum of the powers of the multiple paths is calculated as the received power of the perception target association path.

[0216] For example, H(f) is the channel response, where f = 0, 1, 2, ..., N-1 represents the frequency domain sampling point (e.g., subcarrier index), and H(f) can be transformed into the delay dimension (first dimension) by performing an inverse Fourier transform on it. For another example, H(f, t) is the channel response, where f = 0, 1, 2, ..., N-1 represents the frequency domain sampling point (e.g., subcarrier index), and t represents the time domain sampling point (e.g., OFDM symbol index), and t = 0, 1, 2, ..., M-1, and H(f, t) can be transformed into the delay dimension (first dimension) by performing an inverse Fourier transform along the frequency domain dimension and a Fourier transform along the time domain dimension. -Doppler dimension (first dimension); for another example, H(f,t,s) is the channel response, where f=0,1,2,…,N-1 represents the frequency domain sampling point (e.g., subcarrier index), t represents the time domain sampling point (e.g., OFDM symbol index), t=0,1,2,…,M-1, s represents the spatial domain sampling point (antenna index or port index), s=0,1,2,…,P-1, then H(f,t,s) can be transformed into the delay-Doppler-angle dimension (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.

[0217] For example, the second specific acquisition process of the received power of the perceived target correlation path may be:

[0218] Optionally, when calculating the received power of the perception target correlation path, the power of the perception target correlation path in the first dimension can be calculated. The difference between is used as the received power of the perception target association path, where N1 represents the number of perception target association paths. is the average power of multiple paths outside the first path set in the first dimension.

[0219] It should be noted that the above-mentioned thresholds or intervals may be sent to the terminal by other devices (e.g., network-side devices), and the other devices may determine them based on prior perception information or perception requirements. Alternatively, the above-mentioned thresholds or intervals may be determined by the terminal based on prior perception information or perception requirements.

[0220] It should be noted that the perception prior information or perception requirements include one or more of the following information:

[0221] B11, sensing service or sensing service type;

[0222] It should be noted that the sensing services mentioned in the embodiments of the present application may 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 area, etc. Section, RCS) detection, polarization scattering characteristics detection, fall detection, intrusion detection, population statistics, indoor positioning, gesture recognition, lip reading recognition, gait recognition, expression recognition, facial recognition, respiration monitoring, heart rate monitoring, pulse monitoring, humidity / brightness / temperature / atmospheric pressure monitoring, air quality monitoring, weather condition monitoring, environmental reconstruction, topography, building / vegetation distribution detection, pedestrian or vehicle flow detection, crowd density, vehicle density detection and other services; the perception service type can be to classify multiple different perception services according to certain characteristics, for example, according to function, it can be divided into detection-type perception services (such as intrusion detection, fall detection), parameter estimation-type perception services (distance, angle, speed calculation), recognition-type perception services (motion recognition, identity recognition), etc., and can also be divided according to the range of perception (close-range perception, medium-range perception, long-range perception), according to the degree of perception fineness (coarse-grained perception, fine force perception, etc.), according to power consumption / energy consumption, according to resource occupancy, etc. If the sensing service is respiratory monitoring, the corresponding normal respiratory rate can be determined based on the person's gender and age (for example, male: 13 to 21 times / minute, female 15 to 20 times / minute; adult: 12 to 20 times / minute, child: about 30 to 40 times / minute), which can be used as perception prior information.

[0223] B12, perceive the target area;

[0224] The perception target area refers to the location area of ​​the perception object, or the location area where imaging or environmental reconstruction is required; for example, the preset interval range of the delay of the perception target association path is determined according to the approximate location / distance of the perception object.

[0225] B13, type of perceived object;

[0226] It should be noted that by classifying the perceived objects according to their possible motion characteristics, the perceived object types can be obtained. Each perceived object type contains information such as the motion speed range, motion acceleration range, and typical RCS range of typical perceived objects.

[0227] B14, number of perceived targets;

[0228] For example, the camera perception result can be used as a kind of perception prior information to obtain the number of perceived targets.

[0229] It should also be noted that if the terminal determines multiple sensing targets, or the terminal obtains the number of sensing targets based on prior sensing information or sensing requirements, the following methods are available:

[0230] Method 1: Calculate the target indicators of each perception target separately. For example, in Figure 4, the path associated with each perception target is determined separately, and then the target indicators corresponding to each perception target are calculated separately. At this time, when calculating the second indicator corresponding to a perception target (such as perception target A), there are two methods: the second indicator of perception target A = total received power - the first indicator of perception target A; or, the second indicator of perception target A = total received power - the first indicator of perception target A - the first indicator of perception target B; (assuming there are two perception targets: A and B); similarly, there are two ways to calculate the fourth indicator: the fourth indicator of perception target A = the reference signal received power (RSRP) of the first signal - the first indicator of perception target A; or, the fourth indicator of perception target A = the RSRP of the first signal - the first indicator of perception target A - the first indicator of perception target B; (assuming there are two perception targets: A and B)

[0231] Method 2: Calculate a target index for multiple perception targets. For example, in Figure 4, determine the paths associated with any perception target, and then use these paths as the paths associated with the perception target. This is equivalent to treating multiple perception targets as a virtual perception target and then calculating the target index corresponding to the virtual perception target.

[0232] 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:

[0233] C101, signal resource identification (Identity, ID), used to distinguish different signal resource configurations;

[0234] C102, Signal Usage, indicates whether the signal is used for communication (e.g., channel measurement, channel estimation, synchronization, carrying data information, etc.), for sensing, or for both communication and sensing. Specifically, it may also indicate which sensing service the signal is used for, or which type of sensing service the signal is used for. For definitions of sensing services and sensing service types, refer to Explanation 2.

[0235] C103. Waveform, such as Orthogonal Frequency Division Multiplex (OFDM), Single-Carrier Frequency-Division Multiple Access (SC-FDMA), Orthogonal Time Frequency Space (OTFS), Frequency Modulated Continuous Wave (FMCW), pulse signal, etc.

[0236] C104, subcarrier spacing, for example, the subcarrier spacing of the OFDM system is 30 kHz.

[0237] C105, guard interval, which is the time interval from the moment the signal ends to the moment the latest echo signal of the signal is received; this parameter is proportional to the maximum perception distance; for example, it can be calculated as c / (2R_max), where R_max is the maximum perception distance (perceived as required information). For example, for a self-transmitted and self-received perception signal, R_max represents the maximum distance from the perception signal receiving and transmitting point to the signal transmitting point; in some cases, the OFDM signal cyclic prefix (CP) can serve as a minimum guard interval; c is the speed of light.

[0238] C106, starting frequency domain position, that is, starting frequency point, can also be starting RE, RB index;

[0239] C107, starting time domain position, i.e., starting time point, can also be starting symbol index, time slot index, or frame index;

[0240] C108, the ending frequency domain position, that is, the ending frequency point, can be represented by the ending RE and RB index;

[0241] C109, the ending time domain position, i.e., the ending time point, can be represented by the ending RE and RB index;

[0242] C110, frequency domain resource length, that is, frequency domain bandwidth, which is inversely proportional to the range resolution. The frequency domain bandwidth B of each first signal is ≥ c / (2ΔR), where c is the speed of light and ΔR is the range resolution.

[0243] C111. Time domain resource length, also known as burst duration, is inversely proportional to the Doppler resolution.

[0244] C112, frequency domain resource spacing, represents the spacing between adjacent signal frequency domain resource units. It can be expressed as the number of REs or RBs, or as a density value (Density). For example, Density = 1 means that there is one RE in each RB used to carry the signal. The frequency domain resource spacing is inversely proportional to the maximum unambiguous distance / delay. For OFDM systems, when subcarriers are mapped continuously, the frequency domain spacing is equal to the subcarrier spacing.

[0245] C113. Time domain resource interval, where the time domain resource interval is the time interval between two adjacent signal resource units. The time domain resource interval is associated with a maximum unambiguous Doppler frequency shift or a maximum unambiguous velocity.

[0246] C114. Time domain resource characteristics, periodic transmission, semi-continuous transmission, and non-periodic transmission.

[0247] C115: Signal power, for example, from -20dBm to 23dBm, with a value of 2dBm interval.

[0248] C116, sequence information, including sequence type information (ZC sequence, PN sequence, etc.), sequence generation method, sequence length, etc.

[0249] C117, signal direction, angle information or beam information of signal transmission.

[0250] C118, Quasi-Co-Location (QCL) relationship, for example, the perception signal includes multiple resources, each resource is associated with a synchronization signal block (Synchronization Signaling Block, SSB) QCL, QCL includes Type A, B, C or D.

[0251] C119, antenna port information, such as the maximum number of antenna ports and antenna port index.

[0252] C120, cyclic prefix (CP) information, including CP type (such as normal cyclic prefix (NCP), extended cyclic prefix (ECP) or a newly designed CP dedicated to perception measurement), CP length, etc.

[0253] It should be noted that the network-side device receives the second signal, obtains the sensing measurement value, and sends the sensing measurement value to the sensing network (Sensing Function) function.

[0254] It should be noted that the perception network function mentioned in the embodiment of the present application may also be called a perception network element or a perception function network element, which may be on the RAN side or the core network side. It refers to a network node in the core network and / or RAN responsible for at least one function such as perception request processing, perception resource scheduling, perception information interaction, and perception data processing. It can be based on the AMF or location management function (LMF) in the 5G network. It can also be other network nodes or newly defined network nodes. Specifically, the functional characteristics of the perception function network element may include at least one of the following:

[0255] C21. Interact target information with a wireless signal sending device and / or a wireless signal measuring device (including a target terminal or a serving base station of the target terminal or a base station associated with a target area), wherein the target information includes a perception processing request, perception capability, perception assistance data, a perception measurement quantity type, perception resource configuration information, etc., to obtain the value of the target perception result or perception measurement quantity (uplink measurement quantity or downlink measurement quantity) sent by the wireless signal measuring device; wherein the wireless signal can also be referred to as a perception signal.

[0256] C22. The perception method to be used is determined based on factors such as the type of perception service, perception service consumer information, required perception service quality (QoS) requirement information, the perception capability of the wireless signal sending device, and the perception capability of the wireless signal measuring device. The perception method may include: base station A sends and base station B receives, or the base station sends and the terminal receives, or base station A sends and receives by itself, or the terminal sends and the base station receives, or the terminal sends and receives by itself, or terminal A sends and terminal B receives, etc.

[0257] C23. Determine the perception device serving the perception service based on factors such as the type of perception service, information about the perception service consumer, required perception QoS requirement information, the perception capability of the wireless signal sending device, and the perception capability of the wireless signal measuring device, wherein the perception device includes a wireless signal sending device and / or a wireless signal measuring device.

[0258] C24: Manage the overall coordination and scheduling of resources required for sensing services, such as configuring sensing resources of base stations and / or terminals accordingly;

[0259] C25. Process the values ​​of the sensed measurements or perform calculations to obtain sensed results. Furthermore, verify the sensed results and estimate the sensed accuracy.

[0260] Optionally, the measurement quantity may include but is not limited to at least one of the following:

[0261] C31. First-level measurement quantities (received signal / original channel information), including: complex results of the received signal / channel response, amplitude / phase, I-channel / Q-channel, and operation results thereof (operations include addition, subtraction, multiplication, and division; matrix addition, subtraction, multiplication, and division; matrix transposition; trigonometric operations; square root operations; and power operations, as well as threshold detection results and maximum / minimum value 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, and digital filtering, as well as threshold detection results and maximum / minimum value extraction results of the above operation results);

[0262] C32, second-level measurement quantities (basic measurement quantities), including: time delay, Doppler, angle, intensity, and their multi-dimensional combination representation;

[0263] C33, third-level measurement (basic attributes / states), including: distance, speed, direction, spatial position, acceleration, etc.;

[0264] C34, fourth-level measurement quantity (advanced attributes / state), including: target presence, trajectory, movement, expression, vital signs, quantity, imaging results, weather, air quality, shape, material, and composition.

[0265] Optionally, the measurement quantity further includes corresponding tag information, where the tag information includes at least one of the following:

[0266] C401, perception signal identification information;

[0267] C402, perception measurement configuration identification information;

[0268] C403, sensing service information (e.g., sensing service ID);

[0269] C404, data subscription ID;

[0270] C405, measurement use (communication, perception, synaesthesia);

[0271] C406, time information;

[0272] C407, sensing node information (e.g., UE ID, node location, device orientation);

[0273] C408, sensing link information (e.g., sensing link sequence number, transmitting and receiving node identifier);

[0274] C409, measurement quantity description information (for example, the measurement quantity description information may be in the form of an amplitude value, a phase value, or a complex value combining amplitude and phase; the measurement quantity description information may be in the form of a resource type, such as a time domain measurement result or a frequency domain resource measurement result);

[0275] C410: Measurement indicator information (eg, signal-to-noise ratio (SNR), perceived SNR).

[0276] Optionally, the perception demand information mentioned in the embodiment of the present application includes at least one of the following:

[0277] C51, sensing service or sensing service type;

[0278] It should be noted that the sensing services mentioned in the embodiments of the present application may 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 area, etc. Section, RCS) detection, polarization scattering characteristics detection, fall detection, intrusion detection, population statistics, indoor positioning, gesture recognition, lip reading recognition, gait recognition, expression recognition, facial recognition, respiration monitoring, heart rate monitoring, pulse monitoring, humidity / brightness / temperature / atmospheric pressure monitoring, air quality monitoring, weather condition monitoring, environmental reconstruction, topography, building / vegetation distribution detection, pedestrian or vehicle flow detection, crowd density, vehicle density detection and other services; the perception service type can be to classify multiple different perception services according to certain characteristics, for example, according to function, it can be divided into detection-type perception services (such as intrusion detection, fall detection), parameter estimation-type perception services (distance, angle, speed calculation), recognition-type perception services (motion recognition, identity recognition), etc., and can also be divided according to the range of perception (close-range perception, medium-range perception, long-range perception), according to the degree of perception fineness (coarse-grained perception, fine force perception, etc.), according to power consumption / energy consumption, according to resource occupancy, etc. If the sensing service is respiratory monitoring, the corresponding normal respiratory rate can be determined based on the person's gender and age (for example, male: 13 to 21 times / minute, female 15 to 20 times / minute; adult: 12 to 20 times / minute, child: about 30 to 40 times / minute), which can be used as perception prior information.

[0279] C51, perception target area;

[0280] The perception target area refers to the location area where the perception object may exist, or the location area where imaging or environmental reconstruction is required; for example, the preset interval range of the delay of the perception target association path is determined according to the approximate position / distance of the perception object.

[0281] C53, perceived object type;

[0282] It should be noted that by classifying the perceived objects according to their possible motion characteristics, the perceived object types can be obtained. Each perceived object type contains information such as the motion speed, motion acceleration, and typical RCS of a typical perceived object.

[0283] C54, Perceived QoS;

[0284] It should be noted that the perceived QoS is a performance indicator for sensing a target area or a sensing object, including at least one of the following:

[0285] C541, perception resolution (further divided into: ranging resolution, angular resolution, velocity resolution, imaging resolution, etc.);

[0286] C542, perception accuracy (further divided into: ranging accuracy, angle measurement accuracy, speed measurement accuracy, positioning accuracy, etc.);

[0287] C543, sensing range (further divided into: ranging range, speed range, angle range, imaging range, etc.);

[0288] C544, perception delay (the time interval from the sending of the perception signal to the acquisition of the perception result, or the time interval from the initiation of the perception request to the acquisition of the perception result);

[0289] C545, perception update rate (the time interval between two consecutive perception executions and the acquisition of perception results);

[0290] C546, detection probability (the probability of being correctly detected when the perceived object exists);

[0291] C547, false alarm probability (the probability of falsely detecting a perceived target when the perceived target does not exist);

[0292] C548, maximum number of perceptible targets.

[0293] It should be noted that the embodiment of the present application proposes a power control method for synaesthesia integration, which can ensure that the received power of the perception target correlation path meets the requirements and ensure the perception performance.

[0294] As shown in FIG5 , an embodiment of the present application provides a signal transmission method, including:

[0295] Step 501: The network side device sends a first signal to the terminal;

[0296] In step 502, the network-side device receives a second signal sent by the terminal, where the transmission power used by the second signal is determined by the reception power of the perception target association path obtained by the terminal by receiving the first signal.

[0297] Optionally, the method further includes:

[0298] Determine the target beam through a downlink sensing beam management process or an uplink sensing beam management process;

[0299] The target beam includes at least one of the following:

[0300] Downlink transmit beam;

[0301] Downlink receive beam;

[0302] Uplink transmit beam;

[0303] Uplink receive beam.

[0304] Optionally, the method further includes:

[0305] The network side device sends the preset receiving power of the perception target association path to the terminal.

[0306] Optionally, the method further includes:

[0307] The network side device sends the first signal with a transmission power to the terminal.

[0308] It should be noted that all descriptions about the network side device side in the above embodiments are applicable to the embodiments of the signal transmission method applied to the network side device side, and can achieve the same technical effects, so they will not be repeated here.

[0309] As shown in FIG6 , a signal transmission device 600 according to an embodiment of the present application, applied to a terminal, includes:

[0310] An acquisition module 601 is configured to measure a first signal sent by a network-side device to obtain a received power of a perception target association path;

[0311] A first determining module 602 is configured to determine a transmit power of a second signal according to a receive power of the sensing target association path;

[0312] The first sending module 603 is configured to send the second signal to the network side device using the sending power.

[0313] Optionally, the first determining module 602 is configured to:

[0314] determining a transmit power of the second signal based on the first parameter;

[0315] The first parameter includes: the maximum transmit power, target receive power, and path loss parameter of the terminal; or

[0316] The first parameter includes: the maximum transmit power, target receive power, path loss parameter, and second parameter of the terminal; the second parameter includes at least one of the following: bandwidth occupied by the second signal and power adjustment value;

[0317] The path loss parameter is determined based on the received power of the perception target associated path.

[0318] Optionally, the target received power is equal to a preset received power of a sensing target association path; or

[0319] The target received power is equal to the sum of the preset received power of the perception target association path and the power offset.

[0320] Optionally, the preset receiving power of the sensing target association path is determined by the format of the second signal; or

[0321] The power offset is determined by the format of the second signal.

[0322] 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 perception target association path.

[0323] Optionally, the path loss parameter is determined by a path loss factor and a partial path loss compensation factor;

[0324] 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 perception target association path.

[0325] Optionally, the bandwidth occupied by the second signal is determined by the number of resource blocks (RBs) occupied by the second signal;

[0326] 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 is determined by the number of subcarriers occupied by the second signal.

[0327] Optionally, the received power of the perception target correlation path is a linear average value of the received power of the perception target correlation path in the channel response obtained by measuring the first signal on the resource unit carrying the first signal.

[0328] Optionally, the method for acquiring the perception target correlation path includes:

[0329] performing channel estimation based on the first signal and a received signal corresponding to the first signal to obtain a channel response;

[0330] transforming the channel response into a first dimension;

[0331] Determining a perception target associated path in the path corresponding to the first dimension;

[0332] The first dimension includes at least one of the following:

[0333] Delay dimension;

[0334] Doplevi;

[0335] Azimuth dimension;

[0336] Pitch angle dimension.

[0337] Optionally, the specific implementation of determining the perception target associated path in the path corresponding to the first dimension includes:

[0338] Among the paths corresponding to the first dimension, selecting a path that meets a first condition as the perception target associated path;

[0339] The first condition includes at least one of the following:

[0340] The third parameter of the path exceeds the first threshold or is within the first interval;

[0341] The difference between the third parameter of the first-reach path and the reference path exceeds the second threshold or is within the second interval;

[0342] The fourth parameter of the path satisfies the preset modulation rule;

[0343] The third parameter includes at least one of the following: amplitude, power, intensity, energy, Doppler, delay, and angle;

[0344] The fourth parameter includes at least one of the following: amplitude, power, intensity, energy, and phase.

[0345] Optionally, the specific implementation of selecting a path satisfying a first condition from the paths corresponding to the first dimension as the perception target association path includes:

[0346] Determining a first path set from the paths corresponding to the first dimension, wherein a fifth parameter of each path in the first path set exceeds a third threshold, the fifth parameter comprising at least one of the following: amplitude, power, intensity, and energy;

[0347] In the first path set, a path that meets a first condition is determined as the perception target associated path.

[0348] Optionally, the acquisition module 601 is configured to:

[0349] A downlink receiving beam associated with a downlink transmitting beam of the network side device is used to receive and measure a first signal sent by the network side device.

[0350] It should be noted that the device embodiment is a device corresponding to the above method. All implementation methods in the above method embodiment are applicable to the device embodiment and can achieve the same technical effects, which will not be repeated here.

[0351] The measurement switching device in the embodiments of the present application can be an electronic device, such as an electronic device with an operating system, or a component of an electronic device, such as an integrated circuit or chip. The electronic device can be a terminal or other device other than a terminal. For example, the terminal can include but is not limited to the types of terminal 11 listed above, and the other device can be a server, a network attached storage (NAS), etc., which is not specifically limited in the embodiments of the present application.

[0352] An embodiment of the present application further provides a terminal, including a processor and a communication interface, wherein the processor is configured to measure a first signal sent by a network-side device to obtain a received power of a perception target correlation path;

[0353] determining a transmit power of a second signal according to a receive power of the sensing target association path;

[0354] The second signal is sent to the network side device using the transmit power.

[0355] Optionally, the processor is configured to:

[0356] determining a transmit power of the second signal based on the first parameter;

[0357] The first parameter includes: the maximum transmit power, target receive power, and path loss parameter of the terminal; or

[0358] The first parameter includes: the maximum transmit power, target receive power, path loss parameter, and second parameter of the terminal; the second parameter includes at least one of the following: bandwidth occupied by the second signal and power adjustment value;

[0359] The path loss parameter is determined based on the received power of the perception target associated path.

[0360] Optionally, the target received power is equal to a preset received power of a sensing target association path; or

[0361] The target received power is equal to the sum of the preset received power of the perception target association path and the power offset.

[0362] Optionally, the preset receiving power of the sensing target association path is determined by the format of the second signal; or

[0363] The power offset is determined by the format of the second signal.

[0364] 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 perception target association path.

[0365] Optionally, the path loss parameter is determined by a path loss factor and a partial path loss compensation factor;

[0366] 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 perception target association path.

[0367] Optionally, the bandwidth occupied by the second signal is determined by the number of resource blocks (RBs) occupied by the second signal;

[0368] 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 is determined by the number of subcarriers occupied by the second signal.

[0369] Optionally, the received power of the perception target correlation path is a linear average value of the received power of the perception target correlation path in the channel response obtained by measuring the first signal on the resource unit carrying the first signal.

[0370] Optionally, the processor is further configured to:

[0371] performing channel estimation based on the first signal and a received signal corresponding to the first signal to obtain a channel response;

[0372] transforming the channel response into a first dimension;

[0373] Determining a perception target associated path in the path corresponding to the first dimension;

[0374] The first dimension includes at least one of the following:

[0375] Delay dimension;

[0376] Doplevi;

[0377] Azimuth dimension;

[0378] Pitch angle dimension.

[0379] Optionally, the processor is configured to:

[0380] Among the paths corresponding to the first dimension, selecting a path that meets a first condition as the perception target associated path;

[0381] The first condition includes at least one of the following:

[0382] The third parameter of the path exceeds the first threshold or is within the first interval;

[0383] The difference between the third parameter of the first-reach path and the reference path exceeds the second threshold or is within the second interval;

[0384] The fourth parameter of the path satisfies the preset modulation rule;

[0385] The third parameter includes at least one of the following: amplitude, power, intensity, energy, Doppler, delay, and angle;

[0386] The fourth parameter includes at least one of the following: amplitude, power, intensity, energy, and phase.

[0387] Optionally, the processor is configured to:

[0388] Determining a first path set from the paths corresponding to the first dimension, wherein a fifth parameter of each path in the first path set exceeds a third threshold, the fifth parameter comprising at least one of the following: amplitude, power, intensity, and energy;

[0389] In the first path set, a path that meets a first condition is determined as the perception target associated path.

[0390] Optionally, the communication interface is used to:

[0391] A downlink receiving beam associated with a downlink transmitting beam of the network side device is used to receive and measure a first signal sent by the network side device.

[0392] Preferably, an embodiment of the present application further provides a terminal comprising a processor, a memory, and a program or instruction stored in the memory and executable on the processor. When executed by the processor, the program or instruction implements the various processes of the above-described signal transmission method embodiment and can achieve the same technical effect. To avoid repetition, they are not described here. Specifically, Figure 7 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of the present application.

[0393] The terminal 700 includes but is not limited to: 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 at least some of the components of the processor 710.

[0394] Those skilled in the art will appreciate that the terminal 700 may also include a power supply (such as a battery) to power various components. The power supply may be logically connected to the processor 710 via a power management system, thereby enabling the power management system to manage charging, discharging, and power consumption. The terminal structure shown in FIG7 does not limit the terminal. The terminal may include more or fewer components than shown, or combine certain components, or arrange the components differently, which will not be described in detail here.

[0395] It should be understood that in an embodiment of the present application, the input unit 704 may include a graphics processing unit (GPU) 7041 and a microphone 7042, and 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 a touch panel 7071 and at least one of 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. 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 an operating stick, which will not be repeated here.

[0396] In the embodiment of the present application, after receiving downlink data from the access network device, the radio frequency unit 701 can transmit the data to the processor 710 for processing. In addition, the radio frequency unit 701 can send uplink data to the 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.

[0397] 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, wherein the first storage area may store an operating system, applications 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 volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM), and a direct memory bus random access memory (DRRAM). The memory 709 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0398] Processor 710 may include one or more processing units. Optionally, processor 710 integrates an application processor and a modem processor. The application processor primarily handles operations related to the operating system, user interface, and application programs, while the modem processor primarily processes wireless communication signals, such as a baseband processor. It is understood that the modem processor may not be integrated into processor 710.

[0399] The processor 710 is configured to:

[0400] Measuring a first signal sent by a network-side device to obtain a received power of a perception target association path;

[0401] determining a transmit power of a second signal according to a receive power of the sensing target association path;

[0402] The second signal is sent to the network side device using the transmit power.

[0403] Optionally, the processor 710 is configured to:

[0404] determining a transmit power of the second signal based on the first parameter;

[0405] The first parameter includes: the maximum transmit power, target receive power, and path loss parameter of the terminal; or

[0406] The first parameter includes: the maximum transmit power, target receive power, path loss parameter, and second parameter of the terminal; the second parameter includes at least one of the following: bandwidth occupied by the second signal and power adjustment value;

[0407] The path loss parameter is determined based on the received power of the perception target associated path.

[0408] Optionally, the target received power is equal to a preset received power of a sensing target association path; or

[0409] The target received power is equal to the sum of the preset received power of the perception target association path and the power offset.

[0410] Optionally, the preset receiving power of the sensing target association path is determined by the format of the second signal; or

[0411] The power offset is determined by the format of the second signal.

[0412] 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 perception target association path.

[0413] Optionally, the path loss parameter is determined by a path loss factor and a partial path loss compensation factor;

[0414] 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 perception target association path.

[0415] Optionally, the bandwidth occupied by the second signal is determined by the number of resource blocks (RBs) occupied by the second signal;

[0416] 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 is determined by the number of subcarriers occupied by the second signal.

[0417] Optionally, the received power of the perception target correlation path is a linear average value of the received power of the perception target correlation path in the channel response obtained by measuring the first signal on the resource unit carrying the first signal.

[0418] Optionally, the processor 710 is further configured to:

[0419] performing channel estimation based on the first signal and a received signal corresponding to the first signal to obtain a channel response;

[0420] transforming the channel response into a first dimension;

[0421] Determining a perception target associated path in the path corresponding to the first dimension;

[0422] The first dimension includes at least one of the following:

[0423] Delay dimension;

[0424] Doplevi;

[0425] Azimuth dimension;

[0426] Pitch angle dimension.

[0427] Optionally, the processor 710 is configured to:

[0428] Among the paths corresponding to the first dimension, selecting a path that meets a first condition as the perception target associated path;

[0429] The first condition includes at least one of the following:

[0430] The third parameter of the path exceeds the first threshold or is within the first interval;

[0431] The difference between the third parameter of the first-reach path and the reference path exceeds the second threshold or is within the second interval;

[0432] The fourth parameter of the path satisfies the preset modulation rule;

[0433] The third parameter includes at least one of the following: amplitude, power, intensity, energy, Doppler, delay, and angle;

[0434] The fourth parameter includes at least one of the following: amplitude, power, intensity, energy, and phase.

[0435] Optionally, the processor 710 is configured to:

[0436] Determining a first path set from the paths corresponding to the first dimension, wherein a fifth parameter of each path in the first path set exceeds a third threshold, the fifth parameter comprising at least one of the following: amplitude, power, intensity, and energy;

[0437] In the first path set, a path that meets a first condition is determined as the perception target associated path.

[0438] Optionally, the radio frequency unit 701 is configured to:

[0439] A downlink receiving beam associated with a downlink transmitting beam of the network side device is used to receive and measure a first signal sent by the network side device.

[0440] Preferably, an embodiment of the present application also provides a terminal, including a processor, a memory, and a program or instruction stored in the memory and executable on the processor. When the program or instruction is executed by the processor, the various processes of the above-mentioned signal transmission method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be described here.

[0441] An embodiment of the present application also provides a computer-readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the above-mentioned signal transmission method embodiment are implemented and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0442] The computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0443] As shown in FIG8 , a signal transmission device 800 according to an embodiment of the present application is applied to a network-side device and includes:

[0444] The second sending module 801 is configured to send a first signal to a terminal;

[0445] The receiving module 802 is configured to receive a second signal sent by the terminal, where the transmission power used by the second signal is determined by the reception power of the perception target association path obtained by the terminal by receiving the first signal.

[0446] Optionally, the device further includes:

[0447] A second determination module is configured to determine a target beam through a downlink sensing beam management process or an uplink sensing beam management process;

[0448] The target beam includes at least one of the following:

[0449] Downlink transmit beam;

[0450] Downlink receive beam;

[0451] Uplink transmit beam;

[0452] Uplink receive beam.

[0453] Optionally, the device further includes:

[0454] The third sending module is configured to send the preset receiving power of the perception target association path to the terminal.

[0455] Optionally, the device further includes:

[0456] A fourth sending module is configured to send the sending power of the first signal to the terminal.

[0457] It should be noted that the device embodiment corresponds to the above method, and all implementation methods in the above method embodiment are applicable to the device embodiment and can achieve the same technical effects.

[0458] The communication processing device provided in the embodiment of the present application can implement the various processes implemented in the method embodiment of Figure 3 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0459] An embodiment of the present application also provides a network side device, including a processor and a communication interface, wherein the processor is used to send a first signal to a terminal; receive a second signal sent by the terminal, and the transmission power used by the second signal is determined by the receiving power of the perception target association path obtained by the terminal by receiving the first signal.

[0460] Optionally, the processor is configured to:

[0461] Determine the target beam through a downlink sensing beam management process or an uplink sensing beam management process;

[0462] The target beam includes at least one of the following:

[0463] Downlink transmit beam;

[0464] Downlink receive beam;

[0465] Uplink transmit beam;

[0466] Uplink receive beam.

[0467] Optionally, the communication interface is used to:

[0468] Sending the preset receiving power of the perception target association path to the terminal.

[0469] Optionally, the communication interface is used to:

[0470] The transmission power of the first signal sent to the terminal.

[0471] Specifically, embodiments of the present application also provide a network-side device. As shown in Figure 9, access network device 900 includes an antenna 901, a radio frequency device 902, a baseband device 903, a processor 904, and a memory 905. Antenna 901 is connected to radio frequency device 902. In the uplink direction, radio frequency device 902 receives information via antenna 901 and sends the received information to baseband device 903 for processing. In the downlink direction, baseband device 903 processes the information to be transmitted and sends it to radio frequency device 902. Radio frequency device 902 processes the received information and then sends it through antenna 901.

[0472] The method executed by the network-side device in the above embodiment may be implemented in the baseband device 903 , which includes a baseband processor.

[0473] The baseband device 903 may include, for example, at least one baseband board, on which multiple chips are arranged, as shown in Figure 9, one of which 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 embodiment.

[0474] The network side device may further include a network interface 906, which is, for example, a common public radio interface (CPRI).

[0475] Specifically, the access network device 900 of the embodiment of the present application also includes: instructions or programs stored in the memory 905 and executable on the processor 904. The processor 904 calls the instructions or programs in the memory 905 to execute the methods of execution of each module shown in FIG8 and achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0476] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the above-mentioned signal transmission method embodiment are implemented and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0477] The processor is the processor in the access network device described in the above embodiment. The readable storage medium can be non-volatile or non-transient. The readable storage medium can include a computer-readable storage medium, such as a computer read-only memory (ROM), random access memory (RAM), a magnetic disk, or an optical disk.

[0478] Optionally, as shown in Figure 10, an embodiment of the present application further provides a communication device 1000, including a processor 1001 and a memory 1002, wherein the memory 1002 stores a program or instruction that can be run on the processor 1001. For example, when the communication device 1000 is a terminal, the program or instruction is executed by the processor 1001 to implement the various steps of the above-mentioned signal transmission method or information transmission method embodiment, and can achieve the same technical effect. When the communication device 1000 is a network side device, the program or instruction is executed by the processor 1001 to implement the various steps of the above-mentioned signal transmission method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0479] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned signal transmission method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0480] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0481] An embodiment of the present application further provides a computer program / program product, which is stored in a storage medium. The computer program / program product is executed by at least one processor to implement the various processes of the above-mentioned signal transmission method embodiment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0482] An embodiment of the present application further provides a communication system, including: a terminal and a network-side device, wherein the terminal can be used to execute the steps of the above-mentioned signal transmission method, and the network-side device can be used to execute the steps of the above-mentioned signal transmission method.

[0483] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the 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 opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0484] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general-purpose hardware platform, or of course, by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes a number of instructions for enabling a terminal or network-side device to execute the methods described in each embodiment of the present application.

[0485] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of this application and the scope of protection of the claims. These implementation methods are all within the protection of this application.

Claims

1. A signal transmission method, comprising: The terminal measures the first signal sent by the network side device to obtain the received power of the perception target association path; The terminal determines, according to the received power of the perception target association path, the transmit power of the second signal; The terminal sends the second signal to the network side device using the transmission power.

2. The method according to claim 1, wherein: The determining the transmission power of the second signal according to the reception power of the perception target association path includes: Based on the first parameter, determining the transmission power of the second signal; The first parameter includes: the maximum transmit power, target receive power, and path loss parameter of the terminal; or The first parameter includes: the maximum transmit power, the target receive power, the path loss parameter, and the second parameter of the terminal; the second parameter includes at least one of the following: the bandwidth occupied by the second signal and the power adjustment value; The path loss parameter is determined based on the received power of the perceived target associated path.

3. The method according to claim 2, wherein: The target received power is equal to the preset received power of the sensing target association path; or The target received power is equal to the sum of the preset received power of the perceived target associated path and the power offset.

4. The method according to claim 3, wherein: The preset receiving power of the sensing target association path 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, 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 perception target association path.

6. The method according to claim 2, wherein: The path loss parameter is determined by a path loss factor and a partial path loss compensation factor; 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 perception target association path.

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

8. The method according to any one of claims 1 to 7, wherein: The received power of the perception target association path is a linear average of the received power of the perception target association path in the channel response measured for the first signal on the resource unit carrying the first signal.

9. The method according to claim 8, wherein: The method for acquiring the associated path of the perception target includes: The terminal performs channel estimation based on the first signal and a received signal corresponding to the first signal to obtain a channel response; transforming the channel response to a first dimension; Determining a perception target associated path in the path corresponding to the first dimension; The first dimension includes at least one of the following: Delay dimension; Doplevi; Azimuth dimension; Pitch angle dimension.

10. The method according to claim 9, wherein: The determining of the perceived target associated path in the path corresponding to the first dimension includes: Among the paths corresponding to the first dimension, selecting a path that meets a first condition as the perception target associated path; The first condition includes at least one of the following: The third parameter of the path exceeds the first threshold or is within the first interval; The difference between the third parameter of the first-reach path and the reference path exceeds the second threshold or is within the second interval; The fourth parameter of the path satisfies the 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, and phase.

11. The method according to claim 10, wherein: The selecting, from the paths corresponding to the first dimension, a path that satisfies a first condition as the perceived target associated path includes: Determine a first path set from the paths corresponding to the first dimension, wherein a 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, and energy; In the first path set, a path that meets a first condition is determined as the perception target associated path.

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

13. A signal transmission method, comprising: 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 used by the second signal is determined by the reception power of the perception target association path obtained by the terminal by receiving the first signal.

14. The method according to claim 13, further comprising: Determine the target beam through a downlink sensing beam management process or an uplink sensing beam management process; The target beam includes at least one of the following: Downlink transmit beam; Downlink receive beam; Uplink transmit beam; Uplink receive beam.

15. The method according to claim 13, further comprising: The network side device sends the preset receiving power of the perception target association path to the terminal.

16. The method according to claim 13, further comprising: The network side device sends the first signal with a transmission power to the terminal.

17. A signal transmission device, applied to a terminal, comprising: An acquisition module, used to measure a first signal sent by a network-side device to acquire a received power of a perception target association path; A first determination module, configured to determine a transmission power of a second signal according to a reception power of the perception target association path; The first sending module is used to send the second signal to the network side device using the sending power.

18. The device according to claim 17, wherein: The first determining module is used to: Based on the first parameter, determining the transmission power of the second signal; The first parameter includes: the maximum transmit power, target receive power, and path loss parameter of the terminal; or The first parameter includes: the maximum transmit power, the target receive power, the path loss parameter, and the second parameter of the terminal; the second parameter includes at least one of the following: the bandwidth occupied by the second signal and the power adjustment value; The path loss parameter is determined based on the received power of the perceived target associated path.

19. The device according to claim 18, wherein: The target received power is equal to the preset received power of the sensing target association path; or The target received power is equal to the sum of the preset received power of the perceived target associated path and the power offset.

20. The device according to claim 19, wherein The preset receiving power of the sensing target association 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 device 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 perception target association path.

22. The device according to claim 18, wherein The path loss parameter is determined by a path loss factor and a partial path loss compensation factor; 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 perception target association path.

23. The device 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; 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 is determined by the number of subcarriers occupied by the second signal.

24. The device according to any one of claims 17 to 23, wherein: The received power of the perception target association path is a linear average of the received power of the perception target association path in the channel response measured for the first signal on the resource unit carrying the first signal.

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

26. A signal transmission device, applied to a network side device, comprising: A second sending module, used to send a first signal to a terminal; The receiving module is used to receive a second signal sent by the terminal, where the transmission power used by the second signal is determined by the receiving power of the perception target association path obtained by the terminal by receiving the first signal.

27. The apparatus according to claim 26, further comprising: A second determination module is used to determine a target beam through a downlink sensing beam management process or an uplink sensing beam management process; The target beam includes at least one of the following: Downlink transmit beam; Downlink receive beam; Uplink transmit beam; Uplink receive beam.

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

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

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