Communication method and communication apparatus

Abstract

The application provides a communication method and a communication device. The method comprises: receiving first indication information, the first indication information being used for indicating a quasi-co-location relationship between a first sensing reference signal and a first reference signal; determining a parameter corresponding to the first sensing reference signal based on the first reference signal, the parameter being used for a receiving end device to receive the first sensing reference signal and / or an echo signal of the first sensing reference signal, and / or the parameter being used for estimating a channel for transmitting the first sensing reference signal, and / or the parameter being used for the receiving end device to synchronize a time-frequency resource for transmitting the first sensing reference signal. By indicating the quasi-co-location relationship between the first sensing reference signal and the first reference signal, the receiving end device can determine the parameter of the first sensing reference signal based on the first reference signal, and the sensing performance is improved.

Description

Technical Field

[0001] This application relates to the field of communications, and more specifically, to a communication device and a communication method. Background Technology

[0002] With the evolution of communication technology, communication systems can further acquire sensing capabilities. Communication and sensing functions complement each other within a single system, achieving integrated sensing and communication (ISAC). During communication, the channel can be probed using a reference signal (RS). Current protocols have defined various RSs for different purposes; however, these RSs may not meet the performance requirements for sensing. For example, the channel state information reference signal (CSI-RS) has limited bandwidth, and the positioning reference signal (PRS) requires triggering from the location management function (LMF), resulting in a long triggering process and significant overhead. Therefore, it is necessary to redefine the reference signal used for sensing.

[0003] In new radio (NR), if the large-scale characteristics of the channel traversed by a symbol from one antenna port can be inferred from the channel traversed by a symbol from another antenna port, then these two antenna ports are considered quasi-colocation (QCL). A QCL relationship between two antenna ports also refers to a QCL relationship between their reference signals. When redefining the reference signal used for sensing, how to configure and indicate the QCL relationship of the reference signal used for sensing is a problem that needs to be considered. Summary of the Invention

[0004] This application provides a communication method and a communication device that can configure the QCL relationship of the sensing reference signal and improve sensing performance.

[0005] In a first aspect, a communication method is provided, which can be applied to a receiving device, which may be a communication device (such as a terminal device or a network device), or the communication device may be a component of the communication device (such as a chip or chip system or circuit or communication module).

[0006] The method includes: receiving first indication information from a transmitting device, the first indication information indicating a quasi-co-location relationship between a first sensing reference signal and a first reference signal, the first sensing reference signal being used to sense a target or detect a target; determining parameters corresponding to the first sensing reference signal based on the first reference signal, the parameters being used for at least one of the following: the receiving device receiving the first sensing reference signal, receiving an echo signal of the first sensing reference signal, estimating a channel for transmitting the first sensing reference signal, and synchronously transmitting time-frequency resources of the first sensing reference signal between the receiving device and the transmitting device.

[0007] Based on the above scheme, by indicating the quasi-co-location relationship between the first sensing reference signal and the first reference signal, the receiving device can determine the parameters of the first sensing reference signal based on the first reference signal, thereby receiving the first sensing reference signal and / or the echo signal of the first sensing reference signal based on the parameters of the first sensing reference signal, and / or estimating the channel for transmitting the first sensing reference signal, and / or synchronizing the time and frequency resources for transmitting the first sensing reference signal between the receiving device and the transmitting device, thereby improving sensing performance.

[0008] In some implementations of the first aspect, the first reference signal is one or more of the following signals: a second sensing reference signal, a demodulation reference signal, a channel state information reference signal, a positioning reference signal, a tracking reference signal, and a synchronization signal block.

[0009] In some implementations of the first aspect, the first indication information indicates the type of the quasi-co-location relationship, the type of the quasi-co-location relationship corresponding to at least one parameter, the at least one parameter being measured based on the first reference signal, the at least one parameter including the parameter corresponding to the first sensing reference signal.

[0010] In some implementations of the first aspect, when the first reference signal includes a synchronization signal block, the parameters corresponding to the first sensing reference signal include at least one of Doppler frequency shift and average time delay; when the first reference signal includes a tracking reference signal, the parameters corresponding to the first sensing reference signal include at least one of Doppler frequency shift, Doppler spread, average time delay, and time delay spread; when the first reference signal includes a second sensing reference signal, the parameters corresponding to the first sensing reference signal include at least one of Doppler frequency shift, Doppler spread, average time delay, and time delay spread.

[0011] In some implementations of the first aspect, the sending device is a network device and the receiving device is a terminal device. That is, this method can be applied to downlink transmission.

[0012] In some implementations of the first aspect, when the first reference signal includes a positioning reference signal, the parameter includes at least one of Doppler frequency shift, Doppler spread, average time delay, and time delay spread; when the first reference signal includes a second sensing reference signal, the parameter includes at least one of Doppler frequency shift, Doppler spread, average time delay, and time delay spread.

[0013] In some implementations of the first aspect, the sending device is a terminal device and the receiving device is a network device. That is, this method can be applied to uplink transmission.

[0014] In some implementations of the first aspect, the first instruction information is carried in the uplink control information.

[0015] In some implementations of the first aspect, the parameters corresponding to the first sensing reference signal also include spatial receiving parameters.

[0016] Secondly, a communication method is provided, which can be applied to a transmitting device, which can be a communication device (such as a terminal device or a network device), or the communication device can be a component of the communication device (such as a chip or chip system or circuit or communication module).

[0017] The method includes: sending first indication information to a receiving device, the first indication information being used to indicate a quasi-co-location relationship between a first sensing reference signal and a first reference signal, the first sensing reference signal being used to sense a target or detect a target; sending the first sensing reference signal to the receiving device; wherein the quasi-co-location relationship is used to determine parameters corresponding to the first sensing reference signal, the parameters being used for at least one of the following: the receiving device receiving the first sensing reference signal, the receiving device receiving an echo signal of the first sensing reference signal, estimating a channel for transmitting the first sensing reference signal, and time-frequency resources for synchronous transmission of the first sensing reference signal between the receiving device and the transmitting device.

[0018] Based on the above scheme, by indicating the quasi-co-address relationship between the first sensing reference signal and the first reference signal to the receiving device, the receiving device can determine the parameters of the first sensing reference signal based on the first reference signal. This allows the receiving device to receive the first sensing reference signal and / or its echo signal based on the parameters of the first sensing reference signal, and / or estimate the channel through which the first sensing reference signal is transmitted, and / or synchronize the time-frequency resources for transmitting the first sensing reference signal between the receiving device and the transmitting device, thereby improving sensing performance.

[0019] In some implementations of the second aspect, the first reference signal refers to the description in the first aspect.

[0020] In some implementations of the second aspect, the first indication information indicates the type of the quasi-co-location relationship, the type of the quasi-co-location relationship corresponding to at least one parameter, the at least one parameter being measured based on the first reference signal, the at least one parameter including the parameter corresponding to the first sensing reference signal.

[0021] In some implementations of the second aspect, when the first reference signal includes a synchronization signal block, the parameters corresponding to the first sensing reference signal include at least one of Doppler frequency shift and average time delay; when the first reference signal includes a tracking reference signal, the parameters corresponding to the first sensing reference signal include at least one of Doppler frequency shift, Doppler spread, average time delay, and time delay spread; when the first reference signal includes a second sensing reference signal, the parameters corresponding to the first sensing reference signal include at least one of Doppler frequency shift, Doppler spread, average time delay, and time delay spread.

[0022] In some implementations of the second aspect, the sending device is a network device and the receiving device is a terminal device. That is, this method can be applied to downlink transmission.

[0023] In some implementations of the second aspect, when the first reference signal includes a positioning reference signal, the parameter includes at least one of Doppler frequency shift, Doppler spread, average time delay, and time delay spread; when the first reference signal includes a second sensing reference signal, the parameter includes at least one of Doppler frequency shift, Doppler spread, average time delay, and time delay spread.

[0024] In some implementations of the second aspect, the sending device is a terminal device and the receiving device is a network device. That is, this method can be applied to uplink transmission.

[0025] In some implementations of the second aspect, the first instruction information is carried within the uplink control information.

[0026] In some implementations of the second aspect, the parameters corresponding to the first sensing reference signal also include spatial receiving parameters.

[0027] Thirdly, a communication device is provided, comprising a transceiver unit and a processing unit. The transceiver unit is configured to: receive first indication information from a transmitting device, the first indication information indicating a quasi-co-location relationship between a first sensing reference signal and a first reference signal; the processing unit is configured to: determine parameters corresponding to the first sensing reference signal based on the first reference signal, the parameters being used for the device to receive the first sensing reference signal and / or the echo signal of the first sensing reference signal, and / or, the parameters being used to estimate the channel for transmitting the first sensing reference signal, and / or, the parameters being used for time-frequency resources for synchronous transmission of the first sensing reference signal between the device and the transmitting device.

[0028] In some implementations of the third aspect, the first reference signal refers to the description in the first aspect.

[0029] In some implementations of the third aspect, the first indication information indicates the type of the quasi-co-location relationship, the type of the quasi-co-location relationship corresponding to at least one parameter, the at least one parameter being measured based on the first reference signal, the at least one parameter including the parameter corresponding to the first sensing reference signal.

[0030] In some implementations of the third aspect, when the first reference signal includes a synchronization signal block, the parameters corresponding to the first sensing reference signal include at least one of Doppler frequency shift and average time delay; when the first reference signal includes a tracking reference signal, the parameters corresponding to the first sensing reference signal include at least one of Doppler frequency shift, Doppler spread, average time delay, and time delay spread; when the first reference signal includes a second sensing reference signal, the parameters corresponding to the first sensing reference signal include at least one of Doppler frequency shift, Doppler spread, average time delay, and time delay spread.

[0031] In some implementations of the third aspect, the transmitting device is a network device, and the apparatus is a terminal device. That is, this method can be applied to downlink transmission.

[0032] In some implementations of the third aspect, when the first reference signal includes a positioning reference signal, the parameter includes at least one of Doppler frequency shift, Doppler spread, average time delay, and time delay spread; when the first reference signal includes a second sensing reference signal, the parameter includes at least one of Doppler frequency shift, Doppler spread, average time delay, and time delay spread.

[0033] In some implementations of the third aspect, the sending device is a terminal device, and the apparatus is a network device. That is, this method can be applied to uplink transmission.

[0034] In some implementations of the third aspect, the first instruction information is carried within the uplink control information.

[0035] In some implementations of the third aspect, the parameters corresponding to the first sensing reference signal also include spatial receiving parameters.

[0036] Fourthly, a communication device is provided, the device including a transceiver unit, the transceiver unit being configured to: send first indication information to a receiving device, the first indication information being configured to indicate a quasi-co-location relationship between a first sensing reference signal and a first reference signal; and send the first sensing reference signal to the receiving device; wherein the quasi-co-location relationship is used to determine parameters corresponding to the first sensing reference signal, the parameters being used by the receiving device to receive the first sensing reference signal and / or the echo signal of the first sensing reference signal, and / or the parameters being used to estimate the channel for transmitting the first sensing reference signal, and / or the parameters being used for time-frequency resources for synchronous transmission of the first sensing reference signal between the receiving device and the transmitting device.

[0037] In some implementations of the fourth aspect, the first reference signal refers to the description in the first aspect.

[0038] In some implementations of the fourth aspect, the first indication information indicates the type of the quasi-co-location relationship, the type of the quasi-co-location relationship corresponding to at least one parameter, the at least one parameter being measured based on the first reference signal, the at least one parameter including the parameter corresponding to the first sensing reference signal.

[0039] In some implementations of the fourth aspect, when the first reference signal includes a synchronization signal block, the parameters corresponding to the first sensing reference signal include at least one of Doppler frequency shift and average time delay; when the first reference signal includes a tracking reference signal, the parameters corresponding to the first sensing reference signal include at least one of Doppler frequency shift, Doppler spread, average time delay, and time delay spread; when the first reference signal includes a second sensing reference signal, the parameters corresponding to the first sensing reference signal include at least one of Doppler frequency shift, Doppler spread, average time delay, and time delay spread.

[0040] In some implementations of the fourth aspect, the sending device is a network device and the receiving device is a terminal device. That is, this method can be applied to downlink transmission.

[0041] In some implementations of the fourth aspect, when the first reference signal includes a positioning reference signal, the parameter includes at least one of Doppler frequency shift, Doppler spread, average time delay, and time delay spread; when the first reference signal includes a second sensing reference signal, the parameter includes at least one of Doppler frequency shift, Doppler spread, average time delay, and time delay spread.

[0042] In some implementations of the fourth aspect, the sending device is a terminal device and the receiving device is a network device. That is, this method can be applied to uplink transmission.

[0043] In some implementations of the fourth aspect, the first instruction information is carried within the uplink control information.

[0044] In some implementations of the fourth aspect, the parameters corresponding to the first sensing reference signal also include spatial receiving parameters.

[0045] Fifthly, a communication apparatus is provided for performing the methods of the first or second aspect and any possible implementation thereof. Specifically, the apparatus may include units and / or modules for performing the methods of the first or second aspect and any possible implementation thereof, such as processing units and / or communication units.

[0046] In one implementation, the device is a communication device (such as a terminal device or a network device). When the device is a communication device, the communication unit can be a transceiver or an input / output interface; the processing unit can be at least one processor. Optionally, the transceiver can be a transceiver circuit. Optionally, the input / output interface can be an input / output circuit.

[0047] In another implementation, the device is a chip, chip system, circuit, or communication module for communication equipment (such as terminal equipment or network equipment). When the device is a chip, chip system, or circuit for communication equipment, the communication unit may be an input / output interface, interface circuit, output circuit, input circuit, pin, or related circuit on the chip, chip system, or circuit; the processing unit may be at least one processor, processing circuit, or logic circuit.

[0048] A sixth aspect provides a communication device comprising: at least one processor configured to cause the device to perform the methods described in the first or second aspect and any possible implementation thereof.

[0049] Optionally, the at least one processor is configured to execute computer programs or instructions to perform the methods described in the first or second aspect and any possible implementation thereof.

[0050] Optionally, the device further includes a memory for storing the computer program or instructions.

[0051] Optionally, the at least one processor is coupled to a memory for storing the computer program or instructions. The memory may be located externally to the device.

[0052] Optionally, the device also includes a communication interface through which the processor reads instructions from memory. This can be understood as the communication interface being coupled to the processor and used to input computer programs or instructions to the processor, or to output information from the processor.

[0053] Unless otherwise specified, or if the transmission and acquisition / reception operations involved do not contradict their actual function or internal logic in the relevant description, they can be understood as output, input, or other operations, or as transmission and reception operations performed by radio frequency circuits and antennas. This application does not limit them in this regard.

[0054] In one implementation, the device is a communication device (such as a terminal device or a network device).

[0055] In another implementation, the device is a chip, chip system, circuit, or communication module for communication equipment (such as terminal equipment or network equipment). Optionally, the chip is a modem chip, also known as a baseband chip, or a system-on-chip (SoC) chip containing a modem core, or a system-in-package (SIP) chip.

[0056] In a seventh aspect, a computer-readable storage medium is provided, on which a computer program (e.g., program code) or instructions are stored, which, when executed on a communication device, cause the communication device to perform the methods of the first or second aspect and any possible implementation thereof.

[0057] Eighthly, a computer program product containing instructions is provided, which, when run on a computer, causes the computer to perform the methods described in the first or second aspect and any possible implementation thereof.

[0058] A ninth aspect provides a communication system, including a receiving device and a transmitting device. The receiving device is configured to execute the method provided in any implementation of the first aspect, and the transmitting device is configured to execute the method provided in any implementation of the second aspect. Attached Figure Description

[0059] Figure 1 This is a schematic diagram of a communication system applicable to this application.

[0060] Figure 2 This is a schematic diagram of the perception scenario applicable to this application.

[0061] Figure 3 This is a schematic diagram of a communication method 300 provided in this application.

[0062] Figure 4 This is a schematic diagram of a communication device 1000 provided in an embodiment of this application.

[0063] Figure 5This is a schematic diagram of another communication device 1100 provided in an embodiment of this application.

[0064] Figure 6 This is a schematic diagram of a chip system 600 provided in an embodiment of this application. Detailed Implementation

[0065] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0066] The technical solutions provided in this application can be applied to various communication systems, such as 5G or new radio (NR) systems, long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, and LTE time division duplex (TDD) systems. The technical solutions provided in this application can also be applied to future communication systems. Furthermore, the technical solutions provided in this application can be applied to device-to-device (D2D) communication, vehicle-to-everything (V2X) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), and Internet of Things (IoT) communication systems. The technical solutions provided in this application can also be applied to non-terrestrial network (NTN) systems such as inter-satellite communication and satellite communication.

[0067] As an example, a satellite communication system includes a satellite base station and terminal equipment. The satellite base station provides communication services to the terminal equipment. Satellite base stations can also communicate with each other. A satellite can act as a base station or as a terminal device. Here, "satellite" can refer to drones, hot air balloons, low-Earth orbit satellites, medium-Earth orbit satellites, high-Earth orbit satellites, etc. "Satellite" can also refer to non-terrestrial base stations or non-terrestrial equipment.

[0068] As an example, V2X communication can include: vehicle-to-vehicle (V2V) communication, vehicle-to-infrastructure (V2I) communication, vehicle-to-pedestrian (V2P) communication, and vehicle-to-network (V2N) communication.

[0069] In a communication system, a device can send signals to or receive signals from another device. These signals can include information, signaling, or data. The device can also be replaced by an entity, network entity, communication equipment, communication module, node, communication node, etc. This application uses a device as an example for description.

[0070] The terminal device in this application embodiment can be a device or module that accesses the aforementioned communication system and has corresponding communication functions. The terminal device can include various devices with wireless communication capabilities, which can be used to connect people, objects, machines, etc. The terminal device can be widely applied in various scenarios, such as: cellular communication, D2D, V2X, peer-to-peer (P2P), M2M, MTC, IoT, virtual reality (VR), augmented reality (AR), industrial control, autonomous driving, telemedicine, smart grids, smart furniture, smart offices, smart wearables, smart transportation, smart cities, drones, robots, remote sensing, passive sensing, positioning, navigation and tracking, autonomous delivery, etc. The terminal device can be a terminal in any of the above scenarios, such as an MTC terminal, an IoT terminal, etc. Terminal equipment can be user equipment (UE), terminal, fixed equipment, mobile station equipment or mobile equipment, subscriber unit, handheld device, vehicle-mounted equipment, wearable device, cellular phone, smartphone, session initiation protocol (SIP) phone, wireless data card, personal digital assistant (PDA), computer, tablet computer, laptop computer, wireless modem, handset, laptop computer, computer with wireless transceiver capability, smart book, vehicle, satellite, global positioning system (GPS) device, target tracking device, aircraft (e.g., drone, helicopter, multiple helicopters, four helicopters, or airplanes), ship, remote control device, smart home device, industrial equipment, transportation vehicle with wireless communication capability, communication module, or roadside unit with terminal function, all conforming to the 3GPP standard. The device may be a wireless communication unit (RSU), or a device built into the aforementioned device (e.g., a communication module, modem, or chip in the aforementioned device), or other processing devices connected to the wireless modem.

[0071] It should be understood that in certain scenarios, a UE can also be used as a base station. For example, a UE can act as a scheduling entity, providing sidelink signaling between UEs in scenarios such as V2X, D2D, or P2P.

[0072] In this embodiment, the device for implementing the functions of a terminal device, i.e., the terminal device, can be the terminal device itself, or it can be any device capable of supporting the terminal device in implementing the functions, such as a chip system, chip, circuit, or communication module (i.e., a communication module that performs communication functions). This device can be installed in the terminal device. In this embodiment, the chip system can be composed of chips, or it can include chips and other discrete devices. Furthermore, the device can also be configured with program instructions for performing corresponding communication functions.

[0073] The network device in this application embodiment can be a device or module with corresponding communication functions. The network device can be a device used to communicate with terminal devices; it can also be called an access network device or a wireless access network device, such as a base station. In this application embodiment, the network device can refer to a radio access network (RAN) node (or device) that connects the terminal device to the wireless network. A base station can broadly encompass, or be replaced by, various names including: NodeB, evolved NodeB (eNB), next-generation NodeB (gNB), relay station, access point, transmitting and receiving point (TRP), transmitter, master station, auxiliary station, motor slide retainer (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. A base station can be a macro base station, micro base station, relay node, donor node, or a combination thereof. A base station can also refer to a communication module, modem, or chip installed within the aforementioned equipment or apparatus. A base station can also be a mobile switching center, a device that performs base station functions in D2D, V2X, and M2M communications, or a device that performs base station functions in future communication systems. A base station can support networks using the same or different access technologies. The embodiments of this application do not limit the specific technologies or device forms used in the network equipment.

[0074] Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move depending on the location of the mobile base station. In other examples, a helicopter or drone can be configured as a device to communicate with another base station.

[0075] In some deployments, the network devices mentioned in this application may be devices including CU, or DU, or devices including CU and DU, or devices with control plane CU nodes (central unit-control plane (CU-CP)) and user plane CU nodes (central unit-user plane (CU-UP)) and DU nodes.

[0076] In some deployments, multiple RAN nodes collaborate to assist terminal devices in achieving wireless access, with different RAN nodes each implementing some of the base station's functions. For example, RAN nodes can be CUs, DUs, CU-CPs, CU-UPs, or radio units (RUs). CUs and DUs can be configured separately or included in the same network element, such as a BBU. RUs can be included in radio equipment or radio units, such as RRUs, AAUs, or RRHs.

[0077] In different systems, CU (or CU-CP and CU-UP), DU, or RU may have different names, but those skilled in the art will understand their meaning. For example, a radio access network can also be an open radio access network (O-RAN) architecture. In an O-RAN system, CU can also be called an open CU (open CU, O-CU), DU can also be called an open DU (open DU, O-DU), CU-CP can also be called an open CU-CP (O-CU-CP), CU-UP can also be called an open CU-UP (O-CU-UP), and RU can also be called an open RU (open RU, O-RU). Any of the units among CU (or CU-CP, CU-UP), DU, and RU in this application can be implemented through software modules, hardware modules, or a combination of software modules and hardware modules.

[0078] In this embodiment, the device for implementing the functions of a network device can be a network device itself, or a device capable of supporting the network device in implementing those functions, such as a chip system, chip, circuit, or communication module (i.e., a communication module that performs communication functions). This device can be installed within the network device. In this embodiment, the chip system can be composed of chips, or it can include chips and other discrete devices. Furthermore, the device can be configured with program instructions for performing corresponding communication functions. This embodiment only uses a network device as an example to illustrate the device for implementing the functions of a network device, and does not limit the solution of this embodiment.

[0079] Network devices and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can also be deployed in the air on airplanes, balloons, and satellites. This application does not limit the scenario in which the network devices and terminal devices are located.

[0080] The following combination Figure 1 A brief introduction to the communication system applicable to the embodiments of this application is provided.

[0081] Figure 1 This is a schematic diagram of a communication system applicable to embodiments of this application. For example... Figure 1 As shown, the communication system includes a radio access network 100. The radio access network 100 can be a next-generation (e.g., future or later) radio access network, or a traditional (e.g., 5G, 4G, 3G, or 2G) radio access network. One or more terminal devices (120a-120j, collectively referred to as 120) can be interconnected or connected to one or more network devices (110a, 110b, collectively referred to as 110) within the radio access network 100. Network elements in the wireless communication system are connected via interfaces (e.g., NG, Xn) or over-the-air interfaces.

[0082] When network devices and terminal devices communicate, the network device can manage one or more cells, and a cell can include at least one terminal device. A cell can be understood as an area within the wireless signal coverage range of the network device.

[0083] Figure 1 This is just an illustration; the wireless communication system may also include other devices, such as core network equipment, wireless relay equipment, and / or wireless backhaul equipment. Figure 1 It is not shown in the middle.

[0084] To facilitate understanding of the technical solution of this application, some related technologies involved in the technical solution of this application are introduced.

[0085] 1. Time-domain unit and frequency-domain unit

[0086] Data or information can be carried using time-frequency resources.

[0087] In the time domain, time-domain resources can include one or more time-domain units (or time units). Time-domain units can include radio frames (RF), subframes, frames, half-subframes, half-frames, slots, mini-slots, partial slots, or orthogonal frequency division multiplexing (OFDM) symbols, etc.

[0088] In the frequency domain, frequency domain resources can include one or more frequency domain units. Frequency domain units can include subcarriers, component carriers (CCs), resource elements (REs), resource blocks (RBs), subchannels, resource pools, bandwidth, bandwidth parts (BWPs), channels, or an interlaced RB, etc.

[0089] 2. Reference signal (RS)

[0090] A reference signal can refer to a physical signal that carries a sequence of data and is transmitted to achieve a specific function. Specifically, a reference signal is a physical signal generated by mapping a specific sequence to corresponding resources according to a preset resource mapping method. Reference signals can also be called pilot signals, reference sequences, or reference signals.

[0091] The reference signal involved in this application may be any of the following: channel state information reference signal (CSI-RS), positioning reference signal (PRS), sounding reference signal (SRS), phase track reference signal (PTRS), tracing reference signal (TRS), demodulation reference signal (DMRS), cell reference signal (CRS), synchronization signal / physical broadcast channel block (SS / PBCH block), wherein the SS / PBCH block may be simply referred to as the synchronization signal block (SSB), etc.

[0092] Among them, DMRS can be used for demodulation of the physical downlink control channel (PDSCH) or the physical downlink shared channel (PUSCH); CSI-RS can be used for channel information measurement and to report channel state information (CSI), which includes at least one of the following: precoding matrix indicator (PMI), rank indication (RI), and channel quality indicator (CQI).

[0093] It should be understood that the reference signals listed above are merely examples and should not be construed as limiting this application. This application does not preclude the possibility of defining other reference signals in future agreements to achieve the same or similar functions.

[0094] 3. Perception

[0095] Perception is the process of collecting and processing data to generate perception results, such as determining the distance, shape, and type of surrounding obstacles using collected data. The collected data can be obtained through sensors or through wireless signals.

[0096] Both wireless sensing and wireless communication are based on electromagnetic wave theory. The transmitting end modulates the electromagnetic wave signal, enabling it to carry source information. During propagation, the electromagnetic wave signal is affected by the wireless environment, meaning it can also carry environmental information. The receiving end analyzes the electromagnetic wave signal to obtain not only the carried source information but also sensing information reflecting the characteristics of the propagation environment. In other words, electromagnetic waves inherently possess both communication and sensing capabilities, making integrated sensing and communication (ISAC) possible. ISAC can also be called joint communications and sensing (JCAS). Compared to systems where communication and sensing are separate, ISAC offers advantages such as cost savings, reduced equipment size, lower power consumption, improved frequency efficiency, and reduced mutual interference between communication and sensing.

[0097] 4. Perceiving the Scene

[0098] Perception scenarios can be divided into network-based perception scenarios, network-and-terminal-based perception scenarios, and terminal-based perception scenarios.

[0099] Figure 2 This is a schematic diagram of the perception scenario applicable to this application.

[0100] like Figure 2 Figure (a) shows a sensing scenario based on a network device. In this scenario, the network device acts as both the sender and receiver of sensing signals. For example, sensing signal 1 sent by the network device reaches the target object (e.g., a vehicle). After being reflected by the target object, sensing signal 1 is received by the network device as sensing signal 2, which can then be processed to obtain the sensing result.

[0101] like Figure 2 (b) illustrates a sensing scenario based on network devices. In this scenario, one network device acts as the transmitter of sensing signals, and another network device acts as the receiver of sensing signals. For example, sensing signal 1 sent by network device A reaches the target object. After being reflected by the target object, sensing signal 1 is received by network device B as sensing signal 2. Network device B can then process sensing signal 2 to obtain the sensing result.

[0102] like Figure 2 (c) illustrates a sensing scenario based on network devices and terminal devices. In this scenario, the network device acts as the transmitter of sensing signals, and the terminal device acts as the receiver of sensing signals. For example, sensing signal 1 transmitted by the network device reaches the target object. After being reflected by the target object, sensing signal 1 is received by the terminal device as sensing signal 2. The terminal device can then process sensing signal 2 to obtain the sensing result.

[0103] like Figure 2 Figure (d) illustrates a sensing scenario based on network devices and terminal devices. In this scenario, the terminal device acts as the transmitter of the sensing signal, and the network device acts as the receiver of the sensing signal. For example, sensing signal 1 sent by the terminal device reaches the target object. After being reflected by the target object, sensing signal 1 is received by the network device as sensing signal 2. The network device can then process sensing signal 2 to obtain the sensing result.

[0104] like Figure 2 Figure (e) shows a sensing scenario based on a terminal device. In this scenario, the terminal device acts as both the sender and receiver of sensing signals. For example, sensing signal 1 sent by the terminal device reaches the target object. After being reflected by the target object, sensing signal 1 is received by the terminal device as sensing signal 2, which can then be processed to obtain the sensing result.

[0105] like Figure 2 (f) illustrates a sensing scenario based on terminal devices. In this scenario, one terminal device acts as the transmitter of sensing signals, and another terminal device acts as the receiver of sensing signals. For example, sensing signal 1 sent by terminal device a reaches the target object. After being reflected by the target object, sensing signal 1 is received by terminal device b as sensing signal 2. Terminal device b can then process sensing signal 2 to obtain the sensing result.

[0106] The aforementioned sensing signal 2 can be understood as a reflected signal of sensing signal 1. Sensing signal 2 carries more information than sensing signal 1; for example, sensing signal 2 can carry source information and environmental information.

[0107] It should be understood that, Figure 2 In the scenario shown, the vehicle being perceived is just one example. Perceived targets can also include various tangible objects on the ground that can be sensed, such as mountains, forests, or buildings. Other examples include pedestrians, terminal devices, and unmanned aerial vehicles (UAVs). Perceived targets can also be referred to as detected targets, sensed objects, or objects being detected.

[0108] 5. Quasi-co-location (QCL)

[0109] Quasi-co-location, or quasi-co-location, is used to define the relationship between antenna ports. Since antenna ports are defined by reference signals (RS), QCL essentially refers to the relationship between these reference signals. One reason for introducing QCL is that reference signals are more refined in later LTE and NR versions, meaning reference signals are defined for different purposes. The frequency domain density and time domain period of each reference signal resource may differ, meaning that certain large-scale characteristics may not be obtainable or accurately obtained from one reference signal, but can be obtained from another. For example, CSI-RS has a lower time domain density (which reduces overhead), so it is insufficient to accurately estimate the time-varying parameters and Doppler parameters of the channel, requiring PTRS for estimation. However, CSI-RS has sufficient frequency domain density, allowing the acquisition of frequency domain parameters such as average delay and delay spread.

[0110] Signals with a QCL relationship have the same parameters (also known as large-scale properties, large-scale parameters, large-scale characteristics, large-scale information, etc.), or the signals corresponding to antenna ports with a QCL relationship have the same parameters, or the parameters of one antenna port can be used to determine the parameters of another antenna port with a QCL relationship with that antenna port, or the two antenna ports have the same parameters, or the parameter difference between the two antenna ports is less than a certain threshold. These parameters may include one or more of the following: delay spread, Doppler spread, Doppler shift, average delay, and spatial Rx parameters.

[0111] QCL relations can be classified into four types based on different parameters: type A, type B, type C, and type D.

[0112] Type A: Doppler frequency shift, Doppler spread, average time delay, time delay spread.

[0113] As an example, the QCL relationship of type A can be used to obtain channel estimation information.

[0114] Type B: Doppler frequency shift, Doppler spread.

[0115] As an example, the QCL relationship of type B can be used to obtain channel estimation information.

[0116] type C: Doppler shift, average time delay.

[0117] As an example, the QCL relationship of type C can be used to obtain measurement information such as reference signal receiving power (RSRP), and integrate Doppler frequency shift and time delay characteristics from the reference signal for further precise time-frequency domain synchronization.

[0118] type D: Space reception parameters.

[0119] The spatial reception parameters may include at least one of the following: angle of arrival (AOA), average AOA, AOA spread, angle of departure (AOD), average departure angle AOD, AOD spread, spatial correlation parameters of receiving antenna, spatial correlation parameters of transmitting antenna, transmit beam, receive beam, and resource identifier.

[0120] As an example, the QCL relationship of type D can be used to assist terminal equipment beamforming. For example, the terminal equipment can use spatial parameter information obtained from CSI-RS that satisfies the QCL relationship to assist terminal equipment beamforming for receiving and demodulating the physical downlink control channel (PDCCH) and physical downlink shared channel (PDSCH).

[0121] 6. Transmission Configuration Indicator (TCI) State

[0122] TCI-states can be used to configure and indicate the QCL relationship between two reference signals. For a UE, each UE can configure up to M TCI-states, where M depends on the UE's capability, which can be characterized by the maximum number of TCI-states that can be configured on a single component carrier (CC) (maxNumberConfiguredTCIstatesPerCC). For example, a UE can configure up to 128 TCI-state configurations. For different CCs within the same bandwidth, as long as one CC has a TCI-state configured, the other CCs do not need to be configured, and the UE will apply the configuration to all CCs. A TCI-state can be identified using a TCI-state index; in other words, a TCI-state index can uniquely identify a TCI-state.

[0123] A TCI-state includes several parameters. As an example, each TCI-state includes its own index (tci-StateId) and at least one QCL information (QCL-Info). Each QCL-Info (or each TCI-state) includes: a reference signal resource identifier (or an identifier of the reference signal), and the associated QCL type (qcl-Type), indicating the type of QCL relationship between the resource using this TCI-state and the reference signal resource included in this QCL-Info. For example, if a TCI-state is configured for resource 1, and the QCL-Info included in this TCI-state lists resource 2, it indicates that resource 1 and resource 2 are in QCL. The qcl-Type can have four values: {typeA, typeB, typeC, typeD}.

[0124] Reference signal resources can be used to configure the transmission attributes of reference signals, such as time-frequency resource location, port mapping relationships, power factors, and scrambling codes. The transmitting end can transmit reference signals based on reference signal resources, and the receiving end can receive reference signals based on reference signal resources. To distinguish different reference signal resources, each reference signal resource can correspond to an identifier. The reference signal resource identifier can be at least one of the following: non-zero power (NZP) CSI-RS reference signal resource identifier (NZP-CSI-RS-ResourceId), non-zero power CSI-RS reference signal resource set identifier (NZP-CSI-RS-ResourceSetId), or SSB index (SSB-Index).

[0125] TCI can be used to indicate TCI-state. In one implementation, the network device can configure a TCI-state list for the terminal device via higher-layer signaling (such as RRC messages). For example, the network device can configure the TCI-state list for the terminal device via a TCI-state addition mode list (tci-statesToAddModList) in an RRC message. This TCI-state list can include multiple TCI-states; for example, the network device can configure up to 64 TCI-states for each BWP in each cell.

[0126] Subsequently, the network device can activate one or more TCI-states via higher-layer signaling (such as media access control (MAC) control element (CE) (MAC CE)). The activated TCI-states are a subset of the TCI-state list configured in the aforementioned RRC message. For example, the network device can activate up to 8 TCI-states per BWP in each cell, which is equivalent to 8 sets of QCL relationships.

[0127] Network devices can also indicate a selected TCI-state via the TCI field (e.g., 3 bits) in physical layer signaling (such as downlink control information, DCI). This DCI can be used for scheduling physical downlink resources.

[0128] The configuration information of a TCI-state can include the identifiers of one or two reference signal resources and the associated QCL type. When the QCL relationship is configured as type A, B, or C, the terminal device can demodulate the PDCCH or PDSCH according to the TCI-state indication. When the QCL relationship is configured as type D, the terminal device can know which transmit beam the network device uses to transmit signals, and then determine which receive beam to use to receive signals based on the beam pairing relationship determined by the channel measurement described above. The terminal device can determine the receive beam for receiving the PDSCH based on the TCI field in the DCI on the physical downlink control channel (PDCCH).

[0129] As shown above, existing protocols have defined various reference signals for different purposes, such as CSI-RS, PRS, SRS, and DMRS. Theoretically, these can be used for sensing. However, using these reference signals for sensing may not meet the performance requirements. For example, CSI-RS has a small bandwidth, which may not meet the accuracy requirements for sensing. PRS requires triggering from the location management function (LMF), which has a long triggering process and high overhead. Therefore, it is necessary to redefine the sensing reference signal to improve sensing performance. In this case, how to indicate the QCL relationship of the sensing reference signal is a problem that needs to be considered.

[0130] In view of this, this application provides a communication method and a communication device that can indicate the QCL relationship of a sensing reference signal, thereby improving sensing performance.

[0131] To facilitate understanding of the embodiments of this application, the following points are made before introducing the communication method provided in this application.

[0132] First, in this application, "for indicating" can include both direct and indirect indication. When describing an indication information as indicating A, it can include whether the indication information directly indicates A or indirectly indicates A, but does not necessarily mean that the indication information includes A.

[0133] The information indicated by the instruction is called the information to be instructed. In the specific implementation process, there are many ways to indicate the information to be instructed. For example, but not limited to, the information to be instructed can be directly indicated, such as the information itself or its index. It can also be indirectly indicated by indicating other information, where there is a relationship between the other information and the information to be indicated. It can also indicate only a part of the information to be indicated, while the other parts are known or pre-agreed upon. For example, the instruction of specific information can be achieved by using a pre-agreed (e.g., protocol-defined) arrangement of various pieces of information, thereby reducing instruction overhead to some extent. At the same time, common parts of various pieces of information can be identified and indicated uniformly to reduce the instruction overhead caused by individually indicating the same information.

[0134] Furthermore, the specific indication method can also be any existing indication method, such as, but not limited to, the above-mentioned indication methods and their various combinations. Specific details of various indication methods can be found in existing technologies, and will not be repeated here. As described above, for example, when multiple pieces of information of the same type need to be indicated, the indication methods for different pieces of information may differ. In the specific implementation process, the required indication method can be selected according to specific needs. This application embodiment does not limit the selected indication method; therefore, the indication methods involved in this application embodiment should be understood to cover various methods that enable the party to be indicated to obtain the information to be indicated.

[0135] Furthermore, the information to be instructed can be sent as a whole or divided into multiple sub-information messages, and the sending period and / or timing of these sub-information messages can be the same or different. This application does not limit the specific sending method. The sending period and / or timing of these sub-information messages can be predefined, for example, according to a protocol, or configured by the sending end by sending configuration information to the receiving end. This configuration information can include, for example, but not limited to, one or a combination of at least two of radio resource control (RRC) signaling, media access control (MAC) layer signaling, and physical layer signaling. Radio resource control (RRC) signaling includes, for example, radio resource control (RRC) signaling; MAC layer signaling includes, for example, a MAC control element (CE); and physical layer signaling includes, for example, a digital interface (DCI).

[0136] Second, in this application, the terms "first," "second," and various numerical designations (e.g., "#1," "#2") are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application. For example, they are used to distinguish different information.

[0137] Third, in this application, "preset" may include information indicated by network device signaling or predefined, such as protocol definitions. "Predefined" can be achieved by pre-storing corresponding codes, tables, or other means of indicating relevant information in the device (e.g., including terminal devices and network devices), and this application does not limit the specific implementation method.

[0138] Fourth, the term "storage" in this application can refer to storage in one or more memories. These memories can be separate installations or integrated into an encoder, decoder, processor, or communication device. Alternatively, some memories can be separately installed, while others are integrated into the decoder, processor, or communication device. The type of memory can be any form of storage medium and is not limited thereto.

[0139] Fifth, the “protocol” mentioned in this application may refer to standard protocols in the field of communications, such as LTE protocol, NR protocol and related protocols applied to future communication systems, without limitation.

[0140] Sixth, in this application, all terms and English abbreviations, such as Downlink Control Information (DCI), Media Access Control Element (MAC-CE), Radio Resource Control (RRC), Physical Downlink Control Channel (PDCCH), Physical Downlink Shared Channel (PDSCH), Channel State Information Reference Signal (CSI-RS), Sounding Reference Signal (SRS), Synchronization Signal / Physical Broadcast Channel (SS / PBCH), Synchronization Signal Block (SSB), Transmission Configuration Indication State (TCI-state), etc., are merely illustrative examples given for ease of description and should not constitute any limitation on this application. This application does not preclude the possibility of defining other terms that can achieve the same or similar functions in existing or future protocols.

[0141] Seventh, the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0142] Figure 3 This is a schematic flowchart of a communication method 300 provided in this application. Method 300 is illustrated using the interaction between a transmitting device and a receiving device as an example. In downlink transmission, the transmitting device can be a network device, and the receiving device can be a terminal device; in uplink transmission, the transmitting device can be a terminal device, and the receiving device can be a network device. The terminal device can be replaced by a component of the terminal device (e.g., a chip, chip system, circuit, or communication module); the network device can be replaced by a component of the network device (e.g., a chip, chip system, circuit, or communication module). This method may include the following steps.

[0143] S310, the transmitting device sends first indication information to the receiving device. Accordingly, the receiving device receives the first indication information.

[0144] The first indication information can indicate the QCL relationship between the first sensing reference signal and the first reference signal.

[0145] The first sensing reference signal is an example of a sensing reference signal. In this application, the sensing reference signal is the RS used for sensing. The RS can refer to a signal used for sensing or detecting a target, or a signal used for sensing or detecting environmental information. For example, a sensing RS is an electromagnetic wave transmitted by a network device for sensing environmental information. The sensing reference signal can also be called a sensing signal, radar sensing signal, radar reference signal, etc., and the name of the sensing reference signal is not limited.

[0146] The first reference signal is a source reference signal that has a QCL relationship with the first sensing reference signal.

[0147] It should be understood that when two reference signals with a QCL relationship exist, the two reference signals can be referred to as the target reference signal and the source reference signal (or the referenced signal), respectively. The large-scale channel parameters of the target reference signal can be obtained from the source reference signal. That is, in this application, the first sensing reference signal can be referred to as the target reference signal, and the first reference signal can be referred to as the source reference signal or the referenced signal.

[0148] The first reference signal is one or more of at least one reference signal. The at least one reference signal corresponds to different types.

[0149] For example, the at least one reference signal may be a reference signal in an LTE system or an NR system. The at least one reference signal includes, but is not limited to, a demodulation reference signal, a synchronization reference signal, a channel measurement reference signal, and a phase tracking reference signal. See the description above for the types of reference signals.

[0150] The at least one reference signal may further include a sensing reference signal. That is, the first indication information may also indicate that the first sensing reference signal has a QCL relationship with other sensing reference signals.

[0151] It should be understood that the type of the first reference signal can be different in uplink and downlink transmission. That is, in uplink transmission, the first reference signal can be an uplink reference signal; in downlink transmission, the first reference signal can be a downlink reference signal. The types of the uplink reference signal and the downlink reference signal can be different.

[0152] For example, the downlink reference signal can be the DMRS of the downlink control channel or the DMRS of the downlink data channel. It can also be an SSB, CSI-RS, PTRS, or a downlink sensing reference signal. The uplink reference signal can be the DMRS of the uplink control channel or the DMRS of the uplink data channel. It can also be an SRS, uplink PTRS, or an uplink sensing reference signal.

[0153] As an example, the first indication information can indicate one or more QCL relationships among at least one QCL relationship configured by the first configuration information. The first configuration information is used to configure the source reference signal and the type of the QCL relationship corresponding to the source reference signal. For example, when the first indication information indicates a source reference signal configured by the first configuration information and the type of the QCL relationship corresponding to that source reference signal (denoted as type #1), it can indicate that the first sensing reference signal and the source reference signal have a QCL relationship, and the type of the QCL relationship is type #1.

[0154] In one example, the QCL relationship between the target reference signal and the source reference signal configured in the first configuration information is shown in Tables 1 and 2. The QCL relationships shown in Tables 1 and 2 can be applied to downlink transmission, and Tables 1 and 2 can be understood as applicable to QCL configurations in low-frequency bands (such as below 6 GHz).

[0155] Table 1

[0156] QCL Relationship after RRC Configuration QCL type SSB → Sensing RS: Doppler frequency shift, average time delay type C TRS → Sensing RS: Doppler frequency shift, Doppler spread, average time delay, time delay spread type A Sensing RS → CSI-RS (for CSI): Doppler frequency shift, Doppler spread type B Sensing RS→DMRS: Doppler frequency shift, Doppler spread, average delay, delay spread type A

[0157] As shown in Table 1, the source reference signal can be an SSB, and the QCL relationship between the sensing reference signal (sensing RS) and the SSB is configured as type C. That is, for the first sensing reference signal, the large-scale information that can be obtained from the SSB includes Doppler frequency shift and average time delay. The source reference signal can also be a TRS, and the QCL relationship between the sensing RS and the TRS can be configured as type A. That is, for the first sensing reference signal, the large-scale information that can be obtained from the TRS includes Doppler frequency shift, Doppler spread, average time delay, and time delay spread.

[0158] It is understood that in this application, the first sensing reference signal is a target reference signal, and the first reference signal is one or more reference signals among the source reference signals.

[0159] Optionally, the sensing RS can also be used as a source reference signal for other reference signals to obtain large-scale information from the sensing RS.

[0160] For example, as shown in Table 1, the QCL relationship between CSI-RS (CSI-RS(for CSI)) and sensing RS for CSI is configured as type B, that is, for CSI-RS (for CSI), the large-scale information that can be obtained from sensing RS includes: Doppler frequency shift and Doppler spread.

[0161] For example, the QCL relationship between DMRS and sensing RS is configured as type A, meaning that for DMRS, the large-scale information that can be obtained from sensing RS includes: Doppler frequency shift, Doppler spread, average time delay, and time delay spread.

[0162] It should be understood that the QCL relationships shown in Table 1 are merely examples and do not constitute a limitation on this application. The target reference signal may also include other reference signals, such as reference signals for different purposes defined by existing protocols. The source reference signal may also be other reference signals, such as reference signals other than the existing reference signals shown in Table 1 above. When the target reference signal and the source reference signal are existing reference signals, the QCL relationship between the target reference signal and the source reference signal can refer to existing relevant descriptions. That is, the first configuration information can also be used to configure the QCL relationship between existing reference signals. For example, the QCL relationship configured by the first configuration information is shown in Table 2.

[0163] Table 2

[0164] QCL Relationship QCL type SSB→TRS: Doppler shift, average time delay type C SSB → Sensing RS: Doppler frequency shift, average time delay type C TRS→CSI-RS (for CSI): Doppler frequency shift, Doppler spread, average time delay, time delay spread type A TRS → Sensing RS: Doppler frequency shift, Doppler spread, average time delay, time delay spread type A TRS→DMRS: Doppler frequency shift, Doppler spread, average time delay, time delay spread type A TRS→CSI-RS (for CSI): Doppler frequency shift, Doppler spread type B Sensing RS → CSI-RS (for CSI): Doppler frequency shift, Doppler spread type B CSI-RS→DMRS: Doppler frequency shift, Doppler spread, average time delay, time delay spread type A Sensing RS→DMRS: Doppler frequency shift, Doppler spread, average delay, delay spread type A

[0165] As shown in Table 2, the large-scale information that the SSB can provide for the target reference signal includes Doppler shift and average time delay, which can be used to assist in the reception of target reference signals (such as Sensing RS / TRS). The QCL relationship between TRS and CSI-RS can be configured as Type A or Type B. When the QCL relationship between TRS and CSI-RS is configured as Type B, TRS will use a wide beam with a sector-wide beam, while CSI-RS may use a shaped narrow beam. Sensing RS can provide more accurate time-frequency synchronization; therefore, CSI-RS can be configured to obtain large-scale information of type A or type B from sensing RS. For DMRS, the required type A large-scale information can be obtained directly from sensing RS or TRS, or indirectly through CSI-RS.

[0166] The specific meaning of the QCL relationships configured in Table 2 can be found in Table 1. For example, you can simply replace the target reference signal and source reference signal in Table 1 with the reference signals shown in Table 2.

[0167] It should be understood that the QCL relationships shown in Table 2 are merely examples and do not constitute a limitation on this application. The QCL relationships configured in the first configuration information may be some of the QCL relationships in Table 2. Furthermore, the use of a table to represent QCL relationships in this application is merely an example, and these QCL relationships may also be represented in other forms, as long as they can represent the QCL relationship between the target reference signal and the source reference signal.

[0168] In another example, the QCL relationship between the target reference signal and the source reference signal configured in the first configuration information is shown in Tables 3 and 4. The QCL relationships shown in Tables 3 and 4 are applicable to downlink transmission, and Tables 3 and 4 can be understood as applicable to QCL configurations for high-frequency bands (such as bands above 6 GHz).

[0169] Table 3

[0170]

[0171] As shown in Table 3, the source reference signal can be an SSB, and the QCL relationship between the sensing RS and the SSB can be configured as type C+D. That is, for the first sensing reference signal, the large-scale information that can be obtained from the SSB includes the parameters corresponding to type C: Doppler frequency shift, average time delay, and the parameters corresponding to type D: spatial reception parameters. The source reference signal can also be a TRS, and the QCL relationship between the sensing RS and the TRS can be configured as type A+D. That is, for the first sensing reference signal, the large-scale information that can be obtained from the TRS includes the parameters corresponding to type A: Doppler frequency shift, Doppler spread, average time delay, time delay spread, and the parameters corresponding to type D: spatial reception parameters. For high-frequency bands, the sensing RS can also obtain the large-scale information corresponding to type D from the SSB / TRS.

[0172] Similarly, the sensing RS can also serve as a source reference signal, from which other reference signals obtain large-scale information. The large-scale information obtained by other reference signals from the sensing RS can also include the large-scale information corresponding to type D.

[0173] For example, as shown in Table 3, for PDCCH DMRS / PDSCH DMRS, the large-scale information that can be obtained from sensing RS includes: Doppler frequency shift, Doppler spread, average delay, delay spread, and spatial reception parameters.

[0174] It should be understood that the QCL relationships shown in Table 3 are merely examples and do not constitute a limitation on this application. For high-frequency bands, the target reference signal may also include other existing reference signals, and the source reference signal may also include other existing reference signals. When the target reference signal and the source reference signal are other existing reference signals, the QCL relationship between the target reference signal and the source reference signal can be referred to existing relevant descriptions. For example, the QCL relationship between the target reference signal and the source reference signal configured in the first configuration information is shown in Table 4.

[0175] Table 4

[0176]

[0177]

[0178] In Table 4, the large-scale information that the SSB can provide for the target reference signal includes Doppler shift and average time delay, which can be used to assist in the reception of target reference signals (such as Sensing RS / TRS). The QCL relationship between TRS and CSI-RS can be configured as Type A or Type B. When the QCL relationship between TRS and CSI-RS is configured as Type B, TRS will use a wide beam with a sector-wide beam, while CSI-RS may use a shaped narrow beam. Sensing RS can provide more accurate time-frequency synchronization; therefore, CSI-RS can be configured to obtain large-scale information of type A or type B from sensing RS. For DMRS, the required type A large-scale information can be obtained directly from sensing RS or TRS, or indirectly through CSI-RS. The specific meaning of the QCL relationships configured in Table 4 is described in Table 3 and will not be repeated here.

[0179] It should be understood that the QCL relationships shown in Table 4 are merely examples and do not constitute a limitation on this application. The QCL relationships configured by the first configuration information may also be a portion of the rows in Table 4. Furthermore, the use of a table to represent QCL relationships in this application is merely an example, and these QCL relationships may also be represented in other forms, as long as they can represent the QCL relationship between the target reference signal and the source reference signal.

[0180] For example, the sending device can send the first configuration information to the receiving device via higher-layer signaling (such as RRC messages), such as a TCI-state list.

[0181] Optionally, the receiving device sends indication information #1 to the sending device. Indication information #1 indicates whether the first configuration information is effective, or in other words, whether the QCL relationship configured for the sensing RS is valid. For example, indication information #1 can be an identifier indicating the resource configuration of a reference signal with a QCL relationship, such as the QCLSource Sensing RS Resource Set ID. The QCL Source Sensing RS Resource Set ID can include 16 bits, where the first eight bits represent the ResourceSets used for communication, and the last eight bits represent the ResourceSets of the Sensing RS. When the ResourceConfig of the RRC does not configure the Sensing RS, the QCL Source Sensing RS Resource Set ID is always 0, indicating no sensing processing is performed. In this case, the QCL relationship of the Sensing RS is invalid. Only when the last eight bits are not all 0 is the QCL relationship configured for the sensing RS valid.

[0182] In summary, the QCL configurations (an example of the first configuration information) for each downlink reference signal can be shown in Tables 5 to 10. The QCL relationships shown in Tables 5 to 10 are merely examples and do not constitute a limitation on this application. The QCL configurations for each reference signal may also include more or fewer QCL relationships.

[0183] Table 5 (TCI states for DL ​​sensing RS)

[0184]

[0185] Table 6 (TCI states for TRS)

[0186]

[0187]

[0188] Table 7 (TCI states for CSI-RS)

[0189]

[0190] Table 8 (TCI states for CSI-RS(BM))

[0191]

[0192] Table 9 (TCI states for PDCCH DMRS)

[0193]

[0194] Table 10 (TCI states for PDSCH DMRS)

[0195]

[0196] For example, the first configuration information can be carried by RRC signaling, that is, the QCL relationship shown in any of the tables in Tables 5 to 10 can be configured by RRC signaling.

[0197] For example, at least one TCI state (referred to as TCI State configuration) can be configured via RRC signaling. Each TCI State table indicates the source reference signal and the QCL type from which large-scale information can be obtained. Each TCI State can configure the correspondence between up to two source reference signals (source RS) and QCL types. For example, the TCI State can configure the correspondence between source RS1 and source RS2 and their respective QCL types: Type 1: source RS1 → QCL Type X; Type 2: source RS1 → QCL Type Y. Here, X and Y correspond to one of QCL types A, B, C, and D, and X and Y are different.

[0198] Furthermore, the protocol specifies the available TCI State configurations for each target reference signal. A single target reference signal can be configured with multiple TCI State configurations. This allows the QCL relationship between the source and target reference signals to be configured via RRC signaling.

[0199] In one possible implementation, the first indication information indicates a first TCI-state, which indicates the QCL type between the first sensing reference signal and the first reference signal. This first indication information can be higher-layer signaling (such as MAC CE), meaning it is used to activate one or more TCI-states among at least one configured TCI state, such as activating (indicating) the state of bsDLSensingRSActivateindition. The activated TCI-state (i.e., the first TCI-state) is a subset of at least one TCI state configured by the aforementioned RRC signaling.

[0200] For example, the first TCI state is shown below:

[0201] TCI-State::=SEQUENCE{

[0202] tci-StateId TCI-StateId,

[0203] qcl-Type1 QCI-Info, / / Configure the first source reference signal

[0204] qcl-Type2 QCI-Info / / Configure the second source reference signal

[0205] …

[0206] }

[0207] QCI-Info::=SEQUENCE{

[0208] cell ServCellIndex / / Configures the serving cell for the reference signal

[0209] bwp-Id BWP-Id, / / Downlink BWP where the reference signal is located

[0210] referenceSignal CHOICE{ / / Reference signal resource

[0211] Sensing RS Sensing RS-ResourceSetId

[0212] ssb SSB-Index

[0213] }

[0214] qcl-Type ENUMERATED{typeA,TypeB,TypeC,TypeD}, / / QCL type

[0215] …

[0216] }

[0217] The first TCI state includes its own index (tci-StateId) and two QCL-Infos (qcl-Type1 and qcl-Type2). Each QCL-Info may include a reference signal resource, indicating that the reference signal using this TCI-state and the reference signal included in this QCL-Info form a QCL relationship. For example, if this first TCI state is configured for a first sensing reference signal, and the reference signal included in the QCL-Info of this first TCI state is a Sensing RS, then it means that the first sensing reference signal and the Sensing RS have a QCL relationship.

[0218] In another example, the QCL relationship configured by this first configuration information applies to uplink transmission. That is, this first configuration information is used to configure the QCL relationship when the uplink sensing reference signal is used as a source reference signal or a target reference signal. This first configuration information is shown in Table 11.

[0219] Table 11

[0220]

[0221] As shown in Table 11, the source reference signal can be an SRS, and the QCL relationship between the sensing RS and the SRS can be configured as type A+D. That is, for the first sensing reference signal, the large-scale information that can be obtained from the SRS includes the parameters corresponding to type A: Doppler frequency shift, Doppler spread, average time delay, and time delay spread, as well as the parameters corresponding to type D: space reception parameters. The source reference signal can also be a sensing RS, and the QCL relationship between sensing RSs can be configured as type A+D. That is, for the first sensing reference signal, the large-scale information that can be obtained from the sensing RS includes the parameters corresponding to type A and the parameters corresponding to type D.

[0222] Optionally, the sensing RS can also be used as a source reference signal for other uplink reference signals to obtain large-scale information from the sensing RS.

[0223] For example, as shown in Table 11, the QCL relationship between the DMRS (PUCCH DMRS / PUSCH DMRS) used for the physical uplink control channel (PUCCH) or physical uplink shared channel (PUSCH) and the sensing RS is configured as type A+D. That is, for PUCCHDMRS / PUSCH DMRS, the large-scale information that can be obtained from the sensing RS includes: Doppler frequency shift, Doppler spread, average delay, delay spread, and spatial reception parameters. Similarly, for SRS and other uplink sensing RSs, the large-scale information that can be obtained from the sensing RS includes the parameters corresponding to type A and the parameters corresponding to type D.

[0224] It should be understood that the QCL relationships shown in Table 11 are merely examples, and the first configuration information may include some rows from Table 11.

[0225] For example, the first indication information can be uplink control information (UCI) or other uplink messages, without limitation.

[0226] For example, a QCL configuration is carried via UCI, indicating the QCL relationship between the first sensing reference signal and the third reference signal. The third reference signal is an uplink reference signal, such as an SRS and / or other sensing RS. The first QCL configuration is as follows:

[0227] Sensing RS::=SEQUENCE{

[0228] QCL-StateId

[0229] qcl-Type1 QCI-Info, / / Configure the first source reference signal (uplink reference signal)

[0230] qcl-Type2 QCI-Info / / Configure the second source reference signal (uplink reference signal)

[0231] …

[0232] }

[0233] QCL-Info::=SEQUENCE{

[0234] cell ServCellIndex / / Configures the serving cell for the reference signal

[0235] referenceSignal CHOICE{ / / Reference signal resource

[0236] Sensing RS Sensing RS-ResourceSetId,

[0237] SRS-ResourceSetId,

[0238] }

[0239] qcl-Type ENUMERATED{typeA,TypeB,TypeC,TypeD}, / / QCL type

[0240] …

[0241] }

[0242] In other words, a QCL configuration includes its own index (QCL-StateId) and two QCL-Infos (qcl-Type1 and qcl-Type2). Each QCL Info can include a reference signal resource, indicating that the uplink sensing reference signal using this TCI-state and the reference signals included in this QCL-Info form a QCL relationship. For example, if this QCL configuration is configured for a first sensing reference signal, and the reference signal included in the QCL-Info of this QCL configuration is SensingRS, then it means that the first sensing reference signal has a QCL relationship with other uplink Sensing RSs; if the reference signal included in the QCL-Info of this QCL configuration is SRS, then it means that the first sensing reference signal and SRS have a QCL relationship.

[0243] S320, the receiving device determines the parameters corresponding to the first sensing reference signal based on the first reference signal.

[0244] That is, the receiving device determines the source reference signal (i.e. the first reference signal) that has a QCL relationship with the first sensing reference signal based on the first finger information, and the type of the QCL relationship. The receiving device determines the parameter corresponding to the type of the QCL relationship based on the measurement of the source reference signal, and uses the parameter for the first sensing reference signal.

[0245] For example, the receiving device can receive the first sensing reference signal or the echo signal of the first sensing reference signal based on this parameter. For instance, when the parameter is the spatial receiving parameter corresponding to type D, the first sensing reference signal can be received based on the spatial receiving parameter. The echo signal of the sensing signal can be a signal generated after the sensing signal reaches the sensing target and undergoes reflection, diffraction, or scattering.

[0246] For example, the receiving device can estimate the channel of the first sensing reference signal based on this parameter. For instance, when the parameter includes parameters corresponding to type A and / or type B, channel estimation can be performed based on this parameter.

[0247] For example, the receiving device can synchronize the time-frequency resources of the first sensing reference signal with the transmitting device based on this parameter. For instance, when this parameter includes parameters corresponding to type C, synchronization can be performed based on this parameter.

[0248] Optionally, the receiving device senses the target based on the parameters corresponding to the first sensing reference signal, such as the position and velocity of the target.

[0249] Optionally, the method further includes:

[0250] S330, the transmitting device sends a first sensing reference signal to the receiving device. Correspondingly, the receiving device receives the first sensing reference signal and / or the echo signal of the sensing signal.

[0251] For example, the transmitting device transmits the first sensing reference signal to the receiving device on the first resource. That is, the first resource is used to carry the first sensing reference signal.

[0252] For example, the transmitting device can transmit the sensing signal within the sensing range, which is used to sense and measure the speed of the sensing target. Correspondingly, the sensing target can receive the sensing signal, and the sensing signal returns as an echo signal after passing through the sensing target. For example, after reaching the sensing target, the sensing signal can return as an echo signal after being reflected, diffracted, or scattered. Furthermore, the receiving device can receive the echo signal of the sensing signal returned by the sensing target.

[0253] Optionally, before receiving the first sensing reference signal and / or the echo signal of the sensing signal, the receiving device determines the first resource according to the second configuration information, that is, the second configuration information is used to configure the resource carrying the first sensing reference signal.

[0254] In one example, for downlink transmission, i.e., when the first sensing reference signal is a downlink sensing reference signal, the specific configuration of the first resource is not limited. For example, the configuration of the first resource is shown in Table 12.

[0255] Table 12

[0256]

[0257] The QCL source Sensing RS resource ID can be used to indicate the resource of the first sensing reference signal. The Sensing RS resource ID can also be used to indicate the resource of the source sensing RS from which the first sensing reference signal acquires large-scale information.

[0258] It should be understood that for downlink sensing reference signals, the time-domain resources of the sensing reference signals are not limited, and the sensing reference signals can be transmitted aperiodically.

[0259] In another example, for uplink transmission, i.e., when the first sensing reference signal is an uplink sensing reference signal, the second configuration can be used to configure the time-domain resources of the first resource. The time-domain resource includes at least one time unit. Taking a time slot as an example, the time slots included in the first resource and the transmission period of the first sensing reference signal satisfy the following relationship:

[0260]

[0261] in, This indicates the number of time slots included in each frame with a subcarrier spacing configured as μ; n f Indicates the system frame number; indicates the number of time slots in a frame with a subcarrier spacing configured as μ; T offset Indicates time slot offset, configured by higher-level parameters; T offset This indicates the transmission period of the first sensing reference signal.

[0262] It should be understood that the uplink sensing reference signal can be transmitted periodically, half-periodically, or aperiodically. The frequency domain resources of the sensing reference signal are not limited; for example, the frequency domain resources of the sensing reference signal are shown in Table 12.

[0263] It is understood that the steps in the above figures are merely illustrative and are not intended to be strictly limited. Furthermore, the sequence numbers of the processes described above do not imply a specific order of execution; the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0264] It is also understood that some optional features in the various embodiments of this application may not depend on other features in some scenarios, or may be combined with other features in some scenarios, without limitation.

[0265] It is also understood that the methods and operations implemented by the transmitting or receiving device in the above-described method embodiments can also be implemented by components of the device (such as chips or circuits), without limitation.

[0266] The above text combined Figures 1 to 3 The present application provides a detailed description of the method embodiments. The following section, in conjunction with... Figures 4 to 6 This describes an embodiment of the apparatus described in this application. It will be understood that, in order to achieve the functions described in the above embodiments, Figures 4 to 6 The apparatus includes hardware structures and / or software modules corresponding to perform various functions. Those skilled in the art will readily recognize that, based on the units and method steps described in conjunction with the embodiments disclosed in this application, this application can be implemented in hardware or a combination of hardware and computer software. It is understood that the technical features described in the above method embodiments are also applicable to the following apparatus embodiments.

[0267] Figures 4 to 6 The diagram illustrates the possible structures of apparatuses provided for embodiments of this application. These apparatuses can be used to implement the functions of the receiving or transmitting devices in the above method embodiments, and thus also achieve the beneficial effects of the above method embodiments.

[0268] Figure 4 This is a schematic block diagram of the communication device 1000 provided in an embodiment of this application. Figure 4 As shown, the device 1000 may include a communication unit 1010 and a processing unit 1020. The communication unit 1010 can communicate with the outside world, and the processing unit 1020 is used for data processing. The communication unit 1010 may also be referred to as a communication interface or a transceiver unit.

[0269] In one possible design, the device 1000 can implement the steps or processes corresponding to those executed by the receiving device in the above method embodiments, wherein the processing unit 1020 is used to perform processing-related operations of the receiving device in the above method embodiments, and the communication unit 1010 is used to perform transmission-related operations of the receiving device in the above method embodiments.

[0270] In another possible design, the device 1000 can implement the steps or processes corresponding to those performed by the transmitting device in the above method embodiments, wherein the communication unit 1010 is used to perform the receiving-related operations of the transmitting device in the above method embodiments, and the processing unit 1020 is used to perform the processing-related operations of the transmitting device in the above method embodiments.

[0271] It is understood that the device 1000 here is embodied in the form of a functional unit. The term "unit" here can refer to an application-specific integrated circuit (ASIC), electronic circuitry, a processor (e.g., a shared processor, a proprietary processor, or a group processor, etc.) and memory for executing one or more software or firmware programs, integrated logic circuitry, and / or other suitable components supporting the described functions. In an alternative example, those skilled in the art will understand that the device 1000 may specifically be the transmitting end device in the above embodiments, used to execute the various processes and / or steps corresponding to the transmitting end device in the above method embodiments; or, the device 1000 may specifically be the receiving end device in the above embodiments, used to execute the various processes and / or steps corresponding to the receiving end device in the above method embodiments. To avoid repetition, further details are omitted here.

[0272] The apparatus 1000 of each of the above-described schemes has the function of implementing the corresponding steps performed by the receiving device in the above-described method, or the apparatus 1000 of each of the above-described schemes has the function of implementing the corresponding steps performed by the transmitting device in the above-described method. The function can be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions; for example, the communication unit can be replaced by a transceiver (e.g., the transmitting unit in the communication unit can be replaced by a transmitter, and the receiving unit in the communication unit can be replaced by a receiver), and other units, such as processing units, can be replaced by a processor, respectively executing the transmission and reception operations and related processing operations in each method embodiment.

[0273] Furthermore, the aforementioned communication unit can also be a transceiver circuit (e.g., it may include a receiving circuit and a transmitting circuit), and the processing unit can be a processing circuit. In embodiments of this application, Figure 4 The device mentioned can be the terminal device or network device in the foregoing embodiments, or it can be a chip or a chip system, such as a system on a chip (SoC). The communication unit can be an input / output circuit or a communication interface; the processing unit is a processor, microprocessor, or integrated circuit integrated on the chip. No limitations are imposed here.

[0274] Figure 5 This is a schematic block diagram of a communication device 1100 provided in an embodiment of this application. The device 1100 includes a processor 1110 and a transceiver 1120. The processor 1110 and the transceiver 1120 communicate with each other through an internal connection path. The processor 1110 is used to execute instructions to control the transceiver 1120 to transmit and / or receive signals.

[0275] Optionally, the device 1100 may further include a memory 1130, which communicates with the processor 1110 and the transceiver 1120 via an internal connection. The memory 1130 stores instructions, and the processor 1110 can execute the instructions stored in the memory 1130. In one possible implementation, the device 1100 is used to implement the various processes and steps corresponding to the receiving device in the above method embodiments. In another possible implementation, the device 1100 is used to implement the various processes and steps corresponding to the transmitting device in the above method embodiments.

[0276] Optionally, the memory 1130 may be integrated into the processor 1110.

[0277] In one possible scenario, device 1100 includes at least one processor with integrated memory, and other memory besides the memory integrated on the processor.

[0278] It is understood that the device 1100 can specifically be the terminal device or network device in the above embodiments, or it can be a chip or chip system. Correspondingly, the transceiver 1120 can be the transceiver circuit of the chip, which is not limited here. Specifically, the device 1100 can be used to execute the various steps and / or processes corresponding to the terminal device or network device in the above method embodiments.

[0279] Optionally, the memory 1130 may include read-only memory and random access memory, and provide instructions and data to the processor. The memory may include non-volatile random access memory. For example, the memory may also store device type information. The processor 1110 may be used to execute instructions stored in the memory, and when the processor 1110 executes instructions stored in the memory, the processor 1110 is used to perform the various steps and / or processes of the method embodiments corresponding to the terminal device or network device described above.

[0280] In implementation, each step of the above method can be completed by integrated logic circuits in the processor's hardware or by instructions in software. The steps of the method in conjunction with the embodiments of this application can be directly manifested as execution by the hardware processor, or as a combination of hardware and software modules in the processor. The software modules can reside in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. This storage medium is located in memory, and the processor reads information from the memory and, in conjunction with its hardware, completes the steps of the above method. To avoid repetition, detailed descriptions are omitted here.

[0281] It should be noted that the processor in the embodiments of this application can be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method embodiments can be completed by the integrated logic circuitry in the processor's hardware or by instructions in software form. The processor can be a general-purpose processor, digital signal processing (DSP), ASIC, field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. The processor in the embodiments of this application can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this application can be directly embodied as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules can be located in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. This storage medium is located in memory; the processor reads information from the memory and, in conjunction with its hardware, completes the steps of the above methods.

[0282] It is understood that the memory in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous linked dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM). It should be noted that the memory used in the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0283] Optionally, the memory (e.g., 1130) in this embodiment may be integrated into the processor (e.g., 1110).

[0284] Figure 6 This is a schematic diagram of a chip system 600 provided in an embodiment of this application. The chip system 600 (or may also be called a processing system) includes logic circuitry 610 and an input / output interface 620.

[0285] The logic circuit 610 can be a processing circuit in the chip system 600. The logic circuit 610 can be coupled to a memory unit, calling instructions from the memory unit, enabling the chip system 600 to implement the methods and functions of the embodiments of this application. The input / output interface 620 can be an input / output circuit in the chip system 600, outputting processed information or inputting data or signaling information to be processed into the chip system 600 for processing.

[0286] As one approach, the chip system 600 is used to implement the operations performed by the communication device (such as a terminal device or a network device) in the various method embodiments described above.

[0287] For example, logic circuit 610 is used to implement processing-related operations performed by a communication device (such as a terminal device or a network device) in the above method embodiments; input / output interface 620 is used to implement sending and / or receiving-related operations performed by a communication device (such as a terminal device or a network device) in the above method embodiments.

[0288] In addition, this application also provides a computer-readable storage medium storing computer instructions, which, when executed on a computer, cause the operations and / or processes performed by the receiving device or the sending device in the various method embodiments of this application to be executed.

[0289] This application also provides a computer program product, which includes computer program code or instructions. When the computer program code or instructions are run on a computer, the operations and / or processes performed by the receiving end device or the sending end device in the various method embodiments of this application are executed.

[0290] Furthermore, this application also provides a chip including a processor. A memory for storing a computer program is provided independently of the chip, and the processor is used to execute the computer program stored in the memory, such that operations and / or processes performed by a receiving device or a transmitting device in any method embodiment are performed.

[0291] Furthermore, the chip may also include a communication interface. The communication interface may be an input / output interface or an interface circuit, etc. Furthermore, the chip may also include a memory.

[0292] In addition, this application also provides a communication system, including the transmitting end device or receiving end device in the embodiments of this application.

[0293] It should also be noted that the memory described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0294] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative; for example, the division of units is merely a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling or direct coupling or communication connection may be through some interfaces; the indirect coupling or communication connection of devices or units may be electrical, mechanical, or other forms. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs. Furthermore, the functional units in the various embodiments of this application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0295] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, ROM, RAM, magnetic disks, or optical disks.

[0296] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A communication method characterized by comprising: Applied to a receiving device, the method includes: Receive first indication information from the transmitting device, the first indication information being used to indicate a quasi-co-address relationship between a first sensing reference signal and a first reference signal, the first sensing reference signal being used to sense a target or detect a target; Based on the first reference signal, parameters corresponding to the first sensing reference signal are determined, and the parameters are used for at least one of the following: The receiving device receives the first sensing reference signal, receives the echo signal of the first sensing reference signal, estimates the channel through which the first sensing reference signal is transmitted, and synchronously transmits the time-frequency resources of the first sensing reference signal between the receiving device and the transmitting device.

2. The method of claim 1, wherein, The first reference signal is one or more of the following signals: The second sensing reference signal, demodulation reference signal, channel state information reference signal, positioning reference signal, tracking reference signal, and synchronization signal block are all included.

3. The method according to claim 1 or 2, characterized in that, The first indication information indicates the type of the quasi-co-location relationship, and the type of the quasi-co-location relationship corresponds to at least one parameter. Determining the parameter corresponding to the first sensing reference signal based on the first reference signal includes: The at least one parameter is measured based on the first reference signal, and the at least one parameter includes the parameter corresponding to the first sensing reference signal.

4. The method according to claim 3, characterized in that, When the first reference signal includes a synchronization signal block, the parameters corresponding to the first sensing reference signal include at least one of Doppler frequency shift and average time delay; When the first reference signal includes a tracking reference signal, the parameters corresponding to the first sensing reference signal include at least one of Doppler frequency shift, Doppler spread, average time delay, and time delay spread. When the first reference signal includes the second sensing reference signal, the parameters corresponding to the first sensing reference signal include at least one of Doppler frequency shift, Doppler spread, average time delay, and time delay spread.

5. The method according to any one of claims 1 to 4, characterized in that, The transmitting device is a network device, and the receiving device is a terminal device.

6. The method according to claim 3, characterized in that, When the first reference signal includes a positioning reference signal, the parameters include at least one of Doppler frequency shift, Doppler spread, average time delay, and time delay spread; When the first reference signal includes the second sensing reference signal, the parameters include at least one of Doppler frequency shift, Doppler spread, average time delay, and time delay spread.

7. The method of claim 6, wherein, The transmitting device is a terminal device, and the receiving device is a network device.

8. The method according to claim 6 or 7, characterized in that, The first indication information is carried in the uplink control information.

9. The method according to any one of claims 4 to 8, characterized in that, The parameters corresponding to the first sensing reference signal also include spatial reception parameters.

10. A communications device, characterized by Includes modules or units for performing the method according to any one of claims 1 to 9.

11. A communications device, characterized by Includes a processor, the processor being configured to cause the communication device to perform the method of any one of claims 1 to 9.

12. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program or instructions that, when executed on a communication device, cause the communication device to perform the method as described in any one of claims 1 to 9.

13. A computer program product, characterised in that, The computer program product comprises computer programs or instructions which, when run on a communication device, cause the communication device to perform the method of any one of claims 1 to 9.

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