Communication method and related apparatus

Abstract

The present application relates to the technical field of communications, and in particular to a communication method and a related apparatus. The method comprises: a first communication apparatus receiving a first signal, and performing wake-up and / or sensing on the basis of the first signal. By means of the method, the functions of a first signal can be enriched, the practicability of the first signal is improved, thereby helping to increase the possibility of commercial implementation thereof. In addition, the power consumption of a first communication apparatus can be reduced, and the resource overheads of a communication system can be reduced.

Description

A communication method and related apparatus

[0001] This application claims priority to Chinese Patent Application No. 202510222269.2, filed on February 25, 2025, entitled “A Communication Method and Related Device”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of communication technology, and in particular to a communication method and related apparatus. Background Technology

[0003] With the continuous development of communication technology, network equipment (such as base stations) and terminal devices will face challenges brought about by greater bandwidth, faster processing speeds, and more antennas. The first major challenge is power consumption. To save energy and solve the power consumption problem, a wake-up signal has been proposed. This allows terminal devices or network devices to be in a low-power sleep state most of the time, and only detect the wake-up signal at specific times to wake up the terminal devices or network devices.

[0004] However, the current wake-up signal is only used to wake up terminal devices or network devices, and its function is relatively simple, resulting in low practicality. Summary of the Invention

[0005] To address the aforementioned issues, this application provides a communication method and related apparatus that can enrich the functionality of the first signal, enhance its practicality, and reduce the resource overhead of the communication system.

[0006] The following sections introduce this application from multiple perspectives. It is easy to understand that the implementation methods of these multiple aspects can be referenced from each other.

[0007] In a first aspect, embodiments of this application provide a communication method applied to a first communication device, for example, executed by the first communication device or a communication module within the first communication device. For ease of description, the following description uses the first communication device as the executing entity. The method includes: the first communication device receiving a first signal and waking up and / or sensing based on the first signal. The first signal includes at least one of the following: a linear frequency modulated (LFM) signal, a chirp signal, an orthogonal time-frequency space (OTFS) signal, an on-off keying (OOK) signal, an orthogonal frequency division multiplexing (OFDM) signal, or a discrete fourier transform-spread OFDM (DFT-S-OFDM) signal.

[0008] Optionally, the first signal further includes at least one of the following: a synchronization signal (SS), a primary synchronization signal (PSS), a secondary synchronization signal (SSS), a channel state information-reference signal (CSI-RS), a tracking reference signal (TRS), a demodulation reference signal (DMRS), a synchronization signal block (SSB), a phase tracking reference signal (PTRS), a cell-specific reference signal (CRS), a spread spectrum signal, a modulation symbol (such as a binary phase shift keying (BPSK) signal, a quadrature phase shift keying (QPSK) signal, a quadrature amplitude modulation (QAM) signal), a pulse-phase modulation (PPM) signal, a frequency modulated continuous wave (FMCW), or a dedicated sensing reference signal.

[0009] In this embodiment, the first signal can be used for both wake-up and sensing, enriching its functionality and improving its practicality, thereby increasing its commercial viability. Furthermore, by receiving the first signal, the first communication device can simultaneously achieve wake-up and sensing, without needing to separately receive sensing and wake-up signals to achieve the corresponding functions. This reduces the power consumption and cost of the first communication device and lowers the resource overhead of the communication system.

[0010] Optionally, the first signal can also be used for other functions, such as synchronization, cell information acquisition, time offset acquisition, frequency offset acquisition, phase offset acquisition, channel estimation, channel state information, data transmission, cell measurement, beam measurement, etc.

[0011] In conjunction with the first aspect, in one possible implementation, receiving the first signal includes: the first communication device receiving the first signal at a first detection timing, the first signal being used for wake-up; and / or, the first communication device receiving the first signal at a second detection timing, the first signal being used for sensing.

[0012] Optionally, if the first detection timing and the second detection timing are the same, the first communication device receives a first signal at one detection timing, and this first signal can be used for both wake-up and sensing simultaneously. In this way, the first communication device can reuse the same detection timing to simultaneously achieve wake-up and sensing, which helps reduce the resource overhead of detection timing in the communication system.

[0013] Optionally, if the first detection timing and the second detection timing are different, the first communication device can achieve wake-up and sensing separately through these two detection timings. This allows for more flexible configuration of the detection timings for wake-up and sensing. Furthermore, the above method can avoid interference problems that may occur when waking up and sensing simultaneously, thereby improving the reliability of wake-up and the accuracy of sensing.

[0014] In conjunction with the first aspect, in one possible implementation, receiving a first signal at a first detection time includes: a first communication device receiving the first signal at some or all instances of the first detection time, the first signal also being used for sensing.

[0015] In conjunction with the first aspect, in one possible implementation, receiving the first signal at the second detection time includes: the first communication device receiving the first signal at some or all instances of the second detection time, the first signal also being used for wake-up.

[0016] In conjunction with the first aspect, in one possible implementation, the method further includes: a first communication device acquiring first information. The first information is used to indicate resource allocation for a first detection timing and / or a second detection timing.

[0017] In conjunction with the first aspect, in one possible implementation, the first signal carries second information. The second information is used to instruct the first communication device to be woken up, and / or to instruct the first communication device to perform sensing.

[0018] In conjunction with the first aspect, in one possible implementation, the second information is carried in a manner that includes at least one of the following: the first signal is carried by upsampling and / or downsampling. Alternatively, the second information is carried by a processed first signal, where the signal processing includes modulation of the first signal and linear frequency modulation (LFM) spread spectrum, or the signal processing includes modulation of the first signal, LFM spread spectrum, and pseudo noise (PN) spread spectrum. Carrying the second information in this manner is simple and easy to implement.

[0019] In conjunction with the first aspect, in one possible implementation, the method of carrying the second information is associated with the user capacity currently configured in the communication system where the first communication device is located.

[0020] In conjunction with the first aspect, in one possible implementation, when the user capacity is less than or equal to the first threshold, the method of carrying the second information includes: carrying it through an up-frequency first signal or a down-frequency first signal included in the first signal.

[0021] In conjunction with the first aspect, in one possible implementation, when the user capacity is higher than a first threshold and lower than a second threshold, the method of carrying the second information includes: carrying it through a first signal after signal processing, wherein the signal processing includes modulating the first signal and linear frequency modulation spread spectrum.

[0022] In conjunction with the first aspect, in one possible implementation, when the user capacity is higher than or equal to the second threshold, the method of carrying the second information includes: carrying it through a first signal after signal processing, wherein the signal processing includes modulation, linear frequency modulation spread spectrum, and pseudo-noise spread spectrum of the first signal.

[0023] In the above implementation, the first signal can carry the second information in different ways under different user capacities, which can maximize energy saving while ensuring the capacity performance of the communication system.

[0024] In conjunction with the first aspect, in one possible implementation, the first signal is a low-power wake-up signal. That is, the first signal is also used for low-power wake-up of the first communication device. Thus, by receiving the first signal, the first communication device can achieve low-power wake-up, which helps reduce the power consumption of the first communication device. Furthermore, the first communication device can receive the first signal through a low-power receiver, which can reduce the implementation complexity of the first communication device.

[0025] Secondly, embodiments of this application provide a communication method applied to a second communication device, for example, executed by the second communication device or a communication module within the second communication device. For ease of description, the following description uses the second communication device as the executing entity. The method includes: the second communication device generating a first signal and sending the first signal to a first communication device. The first signal is used for waking up and / or sensing the first communication device. The first signal includes at least one of a chirp signal, an LFM signal, an OTFS signal, an OOK signal, an OFDM signal, or a DFT-S-OFDM signal.

[0026] In conjunction with the second aspect, in one possible implementation, sending the first signal includes: the second communication device sending the first signal at a first detection timing, the first signal being used to wake up the first communication device. And / or, the second communication device sending the first signal at a second detection timing, the first signal being used for sensing by the first communication device.

[0027] In conjunction with the second aspect, in one possible implementation, sending a first signal at the first detection time includes: the second communication device sending the first signal at some or all instances of the first detection time, the first signal also being used for sensing by the first communication device.

[0028] In conjunction with the second aspect, in one possible implementation, sending a first signal at a second detection time includes: the second communication device sending the first signal at some or all instances of the second detection time, the first signal also being used to wake up the first communication device.

[0029] In conjunction with the second aspect, in one possible implementation, the method further includes: a second communication device acquiring first information. The first information is used to indicate resource allocation for a first detection timing and / or a second detection timing.

[0030] In conjunction with the second aspect, in one possible implementation, the first signal carries second information. The second information is used to instruct the first communication device to be woken up, and / or to instruct the first communication device to perform sensing.

[0031] In conjunction with the second aspect, in one possible implementation, the second information is carried in a manner that includes at least one of the following: the first signal is carried by upsampling and / or downsampling. The information is carried by a processed first signal, whereby the signal processing includes modulation of the first signal and linear frequency modulation spread spectrum, or the signal processing includes modulation of the first signal, linear frequency modulation spread spectrum, and pseudo-noise spread spectrum.

[0032] In conjunction with the second aspect, in one possible implementation, the method of carrying the second information is associated with the user capacity currently configured in the communication system where the first communication device is located.

[0033] In conjunction with the second aspect, in one possible implementation, when the user capacity is less than or equal to the first threshold, the method of carrying the second information includes: carrying it through an up-frequency first signal or a down-frequency first signal included in the first signal.

[0034] In conjunction with the second aspect, in one possible implementation, when the user capacity is higher than the first threshold and lower than the second threshold, the method of carrying the second information includes: carrying it through a first signal after signal processing, wherein the signal processing includes modulation of the first signal and linear frequency modulation spread spectrum.

[0035] In conjunction with the second aspect, in one possible implementation, when the user capacity is higher than or equal to the second threshold, the method of carrying the second information includes: carrying it through a first signal after signal processing, wherein the signal processing includes modulation, linear frequency modulation spread spectrum, and pseudo-noise spread spectrum of the first signal.

[0036] In conjunction with the second aspect, in one possible implementation, the first signal is a low-power wake-up signal. That is, the first signal is also used for low-power wake-up of the first communication device.

[0037] It should be understood that the communication method provided in the second aspect above is used to cooperate with the communication method provided in the first aspect above, and thus can achieve the same beneficial effect. To avoid redundancy, it will not be explained again.

[0038] It should be understood that the communication method provided in the first aspect above is also applicable to functional components within the first communication device, such as processors, chips, chip systems, circuits, etc., within the first communication device, and this application does not specifically limit them. Similarly, the communication method provided in the second aspect above is also applicable to functional components within the corresponding device, and to avoid redundancy, it will not be repeated here.

[0039] Thirdly, this application provides a communication device, which can be the first communication device mentioned in the first aspect above. The communication device includes modules, units, or means that implement the above-described methods. These modules, units, or means can be implemented in hardware, software, or by hardware executing corresponding software. The hardware or software includes one or more modules or units corresponding to the above-described functions.

[0040] In some possible designs, the communication device includes a transceiver unit (also called a transceiver module) and a processing unit (also called a processing module). The transceiver unit is used to receive a first signal. The first signal includes at least one of a chirp signal, an LFM signal, an OTFS signal, an OOK signal, an OFDM signal, or a DFT-S-OFDM signal. The processing unit is used to perform wake-up and / or sensing based on the first signal.

[0041] In conjunction with the third aspect, in one possible implementation, the transceiver unit is further configured to receive a first signal at a first detection timing, the first signal being used for wake-up. The transceiver unit is also configured to receive a first signal at a second detection timing, the first signal being used for sensing.

[0042] In conjunction with the third aspect, in one possible implementation, the transceiver unit is further configured to receive a first signal at some or all instances of the first detection timing, the first signal being used for sensing.

[0043] In conjunction with the third aspect, in one possible implementation, the transceiver unit is further configured to receive a first signal on some or all instances of the second detection timing, the first signal being used for wake-up.

[0044] In conjunction with the third aspect, in one possible implementation, the processing unit is further configured to acquire first information. This first information is used to indicate resource configuration for a first detection timing and / or a second detection timing.

[0045] In conjunction with the third aspect, in one possible implementation, the first signal carries second information. The second information is used to instruct the first communication device to be woken up, and / or to instruct the first communication device to perform sensing.

[0046] In conjunction with the third aspect, in one possible implementation, the second information is carried in a manner that includes at least one of the following: the first signal is carried by upsampling and / or downsampling. The information is carried by a processed first signal, whereby the signal processing includes modulation of the first signal and linear frequency modulation spread spectrum, or the signal processing includes modulation of the first signal, linear frequency modulation spread spectrum, and pseudo noise (PN) spread spectrum.

[0047] In conjunction with the third aspect, in one possible implementation, the method of carrying the second information is associated with the user capacity currently configured in the communication system where the first communication device is located.

[0048] In conjunction with the third aspect, in one possible implementation, when the user capacity is less than or equal to the first threshold, the method of carrying the second information includes: carrying it through an up-frequency first signal or a down-frequency first signal included in the first signal.

[0049] In conjunction with the third aspect, in one possible implementation, when the user capacity is higher than the first threshold and lower than the second threshold, the method of carrying the second information includes: carrying it through a first signal after signal processing, wherein the signal processing includes modulation of the first signal and linear frequency modulation spread spectrum.

[0050] In conjunction with the third aspect, in one possible implementation, when the user capacity is higher than or equal to the second threshold, the method of carrying the second information includes: carrying it through a first signal after signal processing, wherein the signal processing includes modulation, linear frequency modulation spread spectrum, and pseudo-noise spread spectrum of the first signal.

[0051] In conjunction with the third aspect, in one possible implementation, the first signal is a low-power wake-up signal. That is, the first signal is also used for low-power wake-up of the first communication device.

[0052] Fourthly, this application provides a communication device, which can be the second communication device mentioned in the first aspect above. The communication device includes modules, units, or means that implement the above-described methods. These modules, units, or means can be implemented in hardware, software, or by hardware executing corresponding software. The hardware or software includes one or more modules or units corresponding to the above-described functions.

[0053] In some possible designs, the communication device includes a transceiver unit (also called a transceiver module) and a processing unit (also called a processing module). The processing unit generates a first signal. The first signal includes at least one of a chirp signal, an LFM signal, an OTFS signal, an OOK signal, an OFDM signal, or a DFT-S-OFDM signal. The transceiver unit transmits the first signal. The first signal is used for waking up and / or sensing the first communication device.

[0054] In conjunction with the fourth aspect, in one possible implementation, the transceiver unit is further configured to transmit a first signal at a first detection timing, the first signal being used to wake up the first communication device. The transceiver unit is also configured to transmit a first signal at a second detection timing, the first signal being used for sensing by the first communication device.

[0055] In conjunction with the fourth aspect, in one possible implementation, the transceiver unit is further configured to transmit a first signal on some or all instances of the first detection timing, the first signal being further configured for sensing by the first communication device.

[0056] In conjunction with the fourth aspect, in one possible implementation, the transceiver unit is further configured to transmit the first signal on some or all instances of the second detection timing, the first signal also being used to wake up the first communication device.

[0057] In conjunction with the fourth aspect, in one possible implementation, the processing unit is further configured to acquire first information. This first information is used to indicate resource configuration for a first detection timing and / or a second detection timing.

[0058] In conjunction with the fourth aspect, in one possible implementation, the first signal carries second information. The second information is used to instruct the first communication device to be woken up, and / or to instruct the first communication device to perform sensing.

[0059] In conjunction with the fourth aspect, in one possible implementation, the second information is carried in a manner that includes at least one of the following: the first signal is carried by upsampling and / or downsampling. The information is carried by a processed first signal, whereby the signal processing includes modulation of the first signal and linear frequency modulation spread spectrum, or the signal processing includes modulation of the first signal, linear frequency modulation spread spectrum, and pseudo-noise spread spectrum.

[0060] In conjunction with the fourth aspect, in one possible implementation, the method of carrying the second information is associated with the user capacity currently configured in the communication system where the first communication device is located.

[0061] In conjunction with the fourth aspect, in one possible implementation, when the user capacity is less than or equal to the first threshold, the method of carrying the second information includes: carrying it through an up-frequency first signal or a down-frequency first signal included in the first signal.

[0062] In conjunction with the fourth aspect, in one possible implementation, when the user capacity is higher than the first threshold and lower than the second threshold, the method of carrying the second information includes: carrying it through a first signal after signal processing, wherein the signal processing includes modulating the first signal and linear frequency modulation spread spectrum.

[0063] In conjunction with the fourth aspect, in one possible implementation, when the user capacity is higher than or equal to the second threshold, the method of carrying the second information includes: carrying it through a first signal after signal processing, wherein the signal processing includes modulation, linear frequency modulation spread spectrum, and pseudo-noise spread spectrum of the first signal.

[0064] In conjunction with the fourth aspect, in one possible implementation, the first signal is a low-power wake-up signal. That is, the first signal is also used for low-power wake-up of the first communication device.

[0065] Fifthly, this application provides a computer program product comprising instructions that, when executed on a computer, cause the computer to perform the method of any one of the first aspects or any possible implementations of the first aspect, or to perform the method of any one of the second aspects or any possible implementations of the second aspect.

[0066] Sixthly, this application provides a computer-readable storage medium storing a computer program that, when executed, performs the method described in any one of the first aspects or any possible implementations of the first aspect, or performs the method described in any one of the second aspects or any possible implementations of the second aspect.

[0067] In a seventh aspect, this application provides a communication device including at least one processor. The at least one processor is configured to execute the method described in any of the preceding aspects or any possible implementation thereof. The communication device may be a first communication device as described in the first aspect, or a device including the first communication device, or a device included in the first communication device, such as a chip; or, the communication device may be a second communication device as described in the second aspect, or a device including the second communication device, or a device included in the second communication device, such as a chip.

[0068] In conjunction with the seventh aspect, in one possible implementation, the communication device further includes a memory for storing necessary program instructions and data (i.e., computer programs).

[0069] In conjunction with the seventh aspect, in one possible implementation, the memory can be coupled to the processor, or it can be independent of the processor.

[0070] Eighthly, this application provides a chip system that includes at least a processor. The processor is configured to execute computer execution instructions to cause a device mounted on the chip system to perform the method described in any one of the first aspects or any possible implementations of the first aspect, or to perform the method described in any one of the second aspects or any possible implementations of the second aspect.

[0071] In conjunction with aspect eight, in one possible implementation, the chip system may further include interface circuitry. This interface circuitry is used to receive computer execution instructions and transmit them to the processor.

[0072] Ninthly, this application provides a communication device comprising: a processor and an interface circuit. The interface circuit is configured to receive signals from other communication devices besides the communication device and transmit them to the processor, or to send signals from the processor to other communication devices besides the communication device. The processor is configured to implement the method described in any of the preceding aspects through logic circuits or by executing computer programs or instructions. The communication device may be a first communication device as described in the first aspect, or a device comprising the first communication device, or a device included in the first communication device, such as a chip system; or, the communication device may be a second communication device as described in the second aspect, or a device comprising the second communication device, or a device included in the second communication device.

[0073] Tenthly, this application provides a communication system. The communication system includes at least a first communication device and a second communication device. The first communication device is used to execute the communication method provided by the first aspect or any possible implementation thereof, and the second communication device is used to execute the communication method provided by the second aspect or any possible implementation thereof. Attached Figure Description

[0074] Figure 1 is a schematic diagram of the architecture of a communication system provided in an embodiment of this application;

[0075] Figure 2 is a schematic diagram of the network element structure of a communication system provided in an embodiment of this application;

[0076] Figure 3 is a schematic diagram of the structure of a communication system provided in an embodiment of this application;

[0077] Figure 4 is a flowchart illustrating a communication method provided in an embodiment of this application;

[0078] Figure 5 is a schematic diagram of a signal processing principle provided in an embodiment of this application;

[0079] Figure 6 is a schematic diagram of another signal processing principle provided in an embodiment of this application;

[0080] Figure 7 is a schematic diagram of another signal processing principle provided in an embodiment of this application;

[0081] Figure 8 is a schematic diagram of a detection timing provided in an embodiment of this application;

[0082] Figure 9 is a schematic diagram of another detection timing provided in an embodiment of this application;

[0083] Figure 10 is a schematic diagram of the structure of a communication device provided in an embodiment of this application;

[0084] Figure 11 is a schematic diagram of another communication device provided in an embodiment of this application;

[0085] Figure 12 is a schematic diagram of the structure of another communication device provided in an embodiment of this application. Detailed Implementation

[0086] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0087] In this application, "at least one" means one or more, and "more than one" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. In the textual description of this application, the character " / " generally indicates an "or" relationship between the preceding and following related objects; in the formulas of this application, the character " / " indicates a "division" relationship between the preceding and following related objects. "Including at least one of A, B, and C" can mean: including A; including B; including C; including A and B; including A and C; including B and C; including A, B, and C.

[0088] The technical solutions provided in this application can be applied to various communication systems, such as Long Term Evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, 5th generation (5G) systems, or new radio (NR) systems. In addition, they can also be applied to future communication systems, such as 6th generation (6G) communication systems.

[0089] The system architecture used in the embodiments of this application is described below. It should be noted that the system architecture and business scenarios described in this application are for the purpose of more clearly illustrating the technical solutions of this application, and do not constitute a limitation on the technical solutions provided in this application. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in this application are also applicable to similar technical problems.

[0090] Please refer to Figure 1, which is a schematic diagram of the architecture of a communication system provided in an embodiment of this application. As shown in Figure 1, the communication system 10 may include a first communication device and a second communication device. The first communication device and the second communication device cooperate with each other and can be used to implement the communication method provided in this application.

[0091] In one possible scenario, the first communication device can be used to communicate with network devices. This device can be a terminal device, or a functional component within the terminal device, such as a chip, chip system, processor, or circuit. The second communication device can also be used to communicate with the terminal device. This device can be a network device, or a functional component within the network device, such as a chip, chip system, processor, or circuit.

[0092] In another possible scenario, the first communication device can be used to communicate with a terminal device, which can be a network device, or a functional component within the network device, such as a chip, chip system, processor, or circuit. The second communication device can also be used to communicate with the network device; it can be a terminal device, or a functional component within the terminal device, such as a chip, chip system, processor, or circuit.

[0093] Among them, terminal equipment can be referred to as: user equipment (UE), mobile station (MS), mobile terminal (MT), access terminal, user unit, user station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent, or user equipment, etc.

[0094] Terminal devices can be devices that provide voice / data connectivity to users, such as handheld devices with wireless connectivity, in-vehicle devices, etc. Currently, examples of terminals include: mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self-driving vehicles, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in 5G networks, or future evolution of public land mobile communication networks. Terminal devices in a network (PLMN), etc., are not limited to this in the embodiments of this application.

[0095] As an example and not a limitation, in this application embodiment, wearable devices can also be called wearable smart devices. This is a general term for devices that utilize wearable technology to intelligently design and develop everyday wearables, such as glasses, gloves, and watches. Wearable devices are portable devices worn directly on the body or integrated into a user's clothing or accessories. Wearable devices are not merely hardware devices; they achieve powerful functions through software support, data interaction, and cloud interaction. Broadly defined, wearable devices include those with comprehensive functions, large size, and the ability to achieve complete or partial functions without relying on a smartphone, such as smartwatches or smart glasses, as well as those focused on a specific application function that require interaction with other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0096] Furthermore, in this embodiment, the terminal device can also be a terminal device in an Internet of Things (IoT) system. IoT is an important component of future information technology development, and its main technical feature is connecting objects to networks through technology, thereby realizing an intelligent network for human-machine interconnection and object-to-object interconnection. In this embodiment, the terminal device can also include a relay. Alternatively, it can be understood that anything capable of data communication with a base station can be considered a terminal device.

[0097] A network device can be a base station, an access point, or an access network device, or it can refer to a device in an access network that communicates with a wireless terminal via one or more sectors on the air interface. A network device can be used to convert received air frames to and from Internet Protocol (IP) packets, and act as a router between the wireless terminal and the rest of the access network, which may include an IP network. The network device can also coordinate the attribute management of the air interface. For example, the network device can be an evolved node B (eNB or eNodeB) in an LTE system, a radio controller in a cloud radio access network (CRAN) or open radio access network (ORAN) scenario, or a relay station, access point, vehicle-mounted device, wearable device, access device in a 5G network, or a network device in a future evolved PLMN, etc. It can also be an access point (AP) in a wireless local area network (WLAN), or a 5G radio base station (gNodeB or gNB) in an NR system. The embodiments of this application are not limited in this respect.

[0098] In addition, in the embodiments of this application, the network device can be a device in the radio access network (RAN), or in other words, a RAN node that connects the terminal device to the wireless network. For example, by way of example and not limitation, network devices can include: gNB, transmission reception point (TRP), evolved Node B (eNB), radio network controller (RNC), Node B (NB), base station controller (BSC), base transceiver station (BTS), home base station (e.g., home evolved Node B, or home Node B (HNB), base band unit (BBU), or wireless fidelity (WiFi) AP, etc.

[0099] Specifically, the BBU in the access network equipment communicates with the core network (CN) via a backhaul link, and the radio unit (RU) in the access network equipment communicates with at least one terminal device via an air interface. The BBU communicates with at least one RU via a fronthaul link. The BBU and RU can be co-located or non-co-located. The BBU includes at least one control unit (CU) and at least one distributed unit (DU), which can communicate via at least one midhaul link.

[0100] In some examples, the CU is a logical node carrying the radio resource control (RRC) layer, service data adaptation protocol (SDAP) layer, packet data convergence protocol (PDCP) layer, and other control functions of the access network equipment. The CU connects to network nodes such as the core network through interfaces, which can be interfaces such as E2 interfaces. Optionally, the CU may have some core network functions. The CU (e.g., the PDCP layer and higher layers) connects to the DU (e.g., the radio link control layer and lower layers) through interfaces, which can be interfaces such as the F1 interface. In some examples, these interfaces (e.g., the F1 interface) can provide control plane (C-Plane) and user plane (U-Plane) functions (e.g., interface management, system information management, UE context management, RRC message transmission, etc.). F1AP is the application protocol of the F1 interface, defining the F1 signaling procedures in some examples. The F1 interface supports control plane F1-C and user plane F1-U.

[0101] In some examples, the CU can be split into CU-CP (control unit-control plane) and CU-UP (control unit-user plane). CU-CP is a logical node carrying the RRC layer and PDCP-C (Control plane part of PDCP) layer, used to implement the CU's control plane functions. CU-CP can interact with network elements in the core network used to implement control plane functions. These network elements in the core network can be access and mobility function (AMF) elements, such as the access and mobility management function (AMF) in a 5G system. The AMF element is responsible for mobility management in the mobile network, such as terminal device location updates, terminal device registration with the network, and terminal device handover. CU-UP is a logical node carrying the SDAP layer and PDCP-U (user plane part of PDCP) layer, used to implement the CU's user plane functions. CU-UP can interact with network elements in the core network used to implement user plane functions. These network elements in the core network, such as the UPF (user plane function) in a 5G system, are responsible for data forwarding and receiving in terminal devices. The above CU and DU configurations are merely examples; the functions of the CU and DU can be configured as needed. For instance, the CU or DU can be configured to have more protocol layer functions, or only some protocol layer processing functions. For example, some functions of the radio link control (RLC) layer and protocol layer functions above the RLC layer can be placed in the CU, while the remaining RLC layer functions and protocol layer functions below the RLC layer can be placed in the DU. Furthermore, the functions of the CU or DU can be divided according to service type or other system requirements, such as by latency. Functions that require low latency can be placed in the DU, while functions that do not require low latency can be placed in the CU.

[0102] In some examples, a DU is a logical node that carries the RLC layer, medium access control (MAC) layer, higher physical layer (Higher PHY) layer, and other functions. In some examples, a DU can control at least one RU. The DU connects to the RU through interfaces, which can be fronthaul interfaces. In some examples, the Higher PHY layer includes the PHY layer processing, such as forward error correction (FEC) encoding and decoding, scrambling, modulation, and demodulation.

[0103] In some examples, the RU is a logical node that carries both lower physical layer (PHY) and radio frequency (RF) processing. In some examples, the RU can be a 3GPP TRP, a remote radio head (RRH), or other similar entity. In some examples, the Low-PHY includes PHY processing functions such as fast Fourier transform (FFT), inverse fast Fourier transform (IFFT), digital beamforming, and filtering. The RU communicates with one or more UEs via a radio link.

[0104] The DU and RU can be co-located or not. The DU and RU exchange control plane and user plane information via a lower-layer split-control, user, and synchronization (LLS-CUS) interface through a fronthaul link. LLS-CUS may include LLS-C and LLS-U interfaces that provide the control plane (C-Plane) and user plane (U-Plane), respectively. In some examples, the control plane (C-Plane) refers to real-time control between the DU and RU. The DU and RU exchange management information via an LLS-M interface on the fronthaul link; the management plane (M-Plane) refers to non-real-time management operations between the DU and RU.

[0105] DU and RU can cooperate to implement the functions of the PHY layer. A DU can be connected to one or more RUs. The functions of DU and RU can be configured in various ways depending on the design. For example, a DU can be configured to implement baseband functions, and an RU can be configured to implement mid-RF functions. Another example is that a DU can be configured to implement higher-level functions in the PHY layer, and an RU can be configured to implement lower-level functions in the PHY layer, or to implement both lower-level and RF functions. Higher-level functions in the physical layer can include a portion of the physical layer's functions that are closer to the MAC layer, while lower-level functions in the physical layer can include another portion of the physical layer's functions that are closer to the mid-RF side.

[0106] In different systems, CU (or CU-CP and CU-UP), DU, or RU can also have different names. For example, in the ORAN system, CU can also be called open CU (open CU, O-CU), DU can also be called open DU (open DU, O-DU), CU-CP can also be called open CU-CP (open CU-CP, O-CU-CP), CU-UP can also be called open CU-UP (open CU-UP, O-CU-UP), and RU can also be called open RU (open RU, O-RU).

[0107] It should be noted that the aforementioned network devices and terminal devices can be fixed in location or mobile. Specifically, network devices and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted, on water, or in the air on airplanes, balloons, and satellites. This application does not impose specific limitations on the application scenarios of the network devices and terminal devices.

[0108] Network devices and terminal devices, as well as terminal devices communicating with each other, can communicate using licensed spectrum, unlicensed spectrum, or both simultaneously. They can also communicate using spectrum below 6 GHz, spectrum above 6 GHz, or both simultaneously. This application does not impose specific restrictions on the spectrum resources used between network devices and terminal devices.

[0109] It should also be noted that the embodiments of this application can be applied to downlink signal transmission, uplink signal transmission, and uplink signal transmission in general. For downlink signal transmission, the transmitting device is a network device, and the corresponding receiving device is a terminal device. For uplink signal transmission, the transmitting device is a terminal device, and the corresponding receiving device is a network device. The embodiments of this application do not impose specific limitations on the direction of signal transmission.

[0110] It should be understood that multiple terminal devices can exist in a communication system. That is, a network device can establish communication connections with multiple terminal devices. Similarly, multiple network devices can exist in a communication system. That is, a terminal device can simultaneously establish communication connections with multiple network devices. In the embodiments of this application, no specific limitation is made on the number of network devices and terminal devices in the communication system. For ease of understanding, the following description uses one network device and one terminal device as an example to illustrate the communication method provided in this application.

[0111] The following will use Figure 2 as an example to illustrate the network element structure of a communication system, taking a terminal device and a network device as examples.

[0112] Please refer to Figure 2, which is a schematic diagram of the network element structure of a communication system provided in an embodiment of this application. As shown in Figure 2, the terminal device of the communication system 20 may include a processor 211, a memory 212, and a transceiver 213. The transceiver 213 may include a transmitter 2131, a receiver 2132, and an antenna 2133. The network device 22 of the communication system 20 may include a processor 221, a memory 222, and a transceiver 223. The transceiver 223 may include a transmitter 2231, a receiver 2232, and an antenna 2233.

[0113] In a specific implementation, the receiver 2132 of the terminal device 21 can be used to receive transmission control information through the antenna 2133, the transmitter 2131 can be used to send transmission feedback information to the network device 22 through the antenna 2133, the processor 211 can be used to analyze, calculate and process the received information, and the memory 212 can be used to store and save the transmitted data and control commands.

[0114] The transmitter 2231 of the network device 22 can be used to send transmission control information to the terminal device 21 through the antenna 2233, the receiver 2232 can be used to receive transmission feedback information sent by the terminal device 21 through the antenna 2233, the processor 221 can be used to analyze, calculate and process the received information, and the memory 222 can be used to store and save the transmitted data and control commands.

[0115] Optionally, please refer to Figure 3, which is a schematic diagram of a communication system provided in an embodiment of this application. Here, the first communication device is taken as a network device and the second communication device as a terminal device for illustration. As shown in Figure 3, both the network device and the terminal device may include a transmitting module, a receiving module, and a wake-up sensing module.

[0116] It should be noted that the functions of the sending module and the wake-up sensing module are similar for both terminal devices and network devices. The following will use a terminal device as an example to illustrate the functions of the above three modules.

[0117] In this embodiment, the wake-up sensing module of the terminal device can be used to receive a first signal to wake up the terminal device and / or to perform terminal device sensing. The wake-up sensing module can also be used to send signals to the sending module and the receiving module to activate the sending module and the receiving module.

[0118] The terminal device's sending module can be used to send signals to network devices to achieve communication. It can also send relevant configuration information to the wake-up sensing module, such as resource configuration information for detection timing.

[0119] The receiving module of the terminal device can be used to receive signals from the network device to achieve communication, and it can also send relevant configuration information to the wake-up sensing module.

[0120] Optionally, the wake-up sensing module can be an LP-WUS receiver. The transmitting module can be a receiver. The receiving module can be a receiver. This application embodiment does not impose specific limitations on the implementation form of the transmitting module, receiving module, and wake-up sensing module.

[0121] To facilitate understanding of this application, some terms or concepts used in this application will be explained below.

[0122] 1. Wake-up signal (WUS)

[0123] In Release 16 (R16) of the 3rd generation partnership project (3GPP), discontinuous reception (DRX) was introduced to save terminal power consumption. However, in daily life, many mobile phone services are likely to have low traffic and low scheduling probability. Therefore, waking up every cycle still results in a lot of power waste. So WUS was introduced in R16 to allow the terminal to wake up on demand.

[0124] A WUS (Write-In-Time) signal is sent before the on-duration period to indicate whether the terminal needs to detect scheduling in the relevant configured discontinuous reception (C-DRX). If the terminal detects the WUS, it will be woken up and will detect the physical downlink control channel (PDCCH). If the terminal does not detect the WUS, it can skip the entire DRX cycle without detecting any PDCCH channel. Because the WUS is only detected outside the on-duration period, during the on-duration period of the DRX, and only a small amount of information is transmitted, although an additional WUS is introduced, it does not cause an increase in power consumption. Furthermore, the longer the DRX cycle, the greater the probability that the terminal will wake up on demand when detecting the WUS, and the smaller the power consumption gain.

[0125] Release 16 introduced downlink control information (DCI) format 2_6 to carry power saving indications for one or more terminals. DCI format 2_6 consists of a configured power-saving radio network temporary identifier (PS-RNTI) masked by a cyclic redundancy check (CRC). Each terminal can indicate the following two types of information:

[0126] (1) Wake-up indication, which is 1 bit, indicates whether the terminal should wake up in the next on duration.

[0127] (2) Scell ​​dormancy indication, which consists of 0 to 5 bits. The actual number of bits corresponds to the number of scell groups configured in the terminal. This bit indicates whether the corresponding scell group has entered dormancy mode.

[0128] WUS is transmitted before the DRX activation period, requiring specific location limitations. Since it uses PDCCH-based channel transmission, it can be configured using existing PDCCH search space configuration methods. However, the maximum PDCCH detection period is 2560 slots, while the maximum DRX period is 10240 milliseconds (ms), making alignment difficult. Therefore, WUS, while reusing existing search space configurations, introduces an offset for the energy-saving signal. The terminal begins detecting the energy-saving signal milliseconds before the DRX activation period, starting at the time-domain initial offset (PS-offset). The specific detection opportunity for the energy-saving signal is determined by the detection period and slot offset of the search space set, and the detection range is determined by the number of detection slots and symbol positions in the search space set. Furthermore, the base station must reserve sufficient preparation time for the terminal for subsequent preprocessing during DRX activation wake-up. For any search space set configured by the terminal, if there are multiple detection slots between the PS-offset and the start position of the DRX activation period, the terminal only needs to detect the energy-saving signal within the first complete detection slot. The offset can be configured via higher-layer signaling.

[0129] Before the DRX activation period, in addition to detecting the energy-saving signal and obtaining terminal information, the terminal may also need to complete the preparatory processes required for the transition from the DRX inactive period to the active period, such as channel state information (CSI) measurement / reporting, sounding reference signal (SRS) transmission, and bandwidth part (BWP) switching. Therefore, after receiving the energy-saving signal, a certain processing time should be reserved for the terminal; this time is the minimum time interval. The minimum time interval is the minimum value of the time interval between the last detection opportunity of the energy-saving signal and the DRX start time, used to limit the terminal from completing energy-saving signal detection before the DRX activation period. The minimum time interval is related to the subcarrier spacing and the terminal's processing capability, and its unit is time slots. Each subcarrier spacing corresponds to two candidate values, each corresponding to a different processing capability of the terminal under that subcarrier, which the terminal reports to the base station according to its own processing capability or preference. When the energy-saving signal detection opportunity is within the minimum time interval, the terminal does not need to perform energy-saving signal detection.

[0130] When energy-saving signals are improperly configured, they inevitably conflict with other physical channels or signals, affecting the energy-saving behavior of subsequent terminals. To avoid interference with existing physical channels, reference signals, or physical layer processes, Release 16 (R16) stipulates that if a candidate PDCCH for an energy-saving signal conflicts with resources occupied by other physical layer channels / signals, the terminal will not detect the candidate PDCCH. When all candidate PDCCHs for energy-saving signals on a detection opportunity cannot be detected, that detection opportunity is considered invalid. Before the DRX activation period, when all detection opportunities for energy-saving signals are invalid, the terminal cannot obtain subsequent energy-saving information. Therefore, the terminal reverts to its original DRX cycle behavior, i.e., waking up at the start of DRX to perform regular PDCCH detection. If a valid detection opportunity is configured before the DRX activation period, but the terminal does not detect an energy-saving signal, the terminal can decide whether to detect the PDCCH in the next DRX cycle based on the parameters configured by the base station. In other words, the terminal's behavior when it does not detect an energy-saving signal is controlled by the parameters configured by the base station. If the base station does not configure this parameter, the terminal will by default not detect the PDCCH in the next DRX cycle if no power-saving signal is detected. Furthermore, if the terminal's secondary cell is configured with a dormant BWP, but the terminal fails to detect a power-saving signal during a valid detection opportunity, the terminal will continue to camp on the currently active BWP until it receives a new BWP handover instruction or the BWP deactivation timer times out.

[0131] 2. Low-power wake-up signal (LP-WUS)

[0132] To further improve energy efficiency, 3GPP Release 18 (R18) and Release 19 (R19) introduced research and standardization work on low-power wake-up receivers (LP-WUR) and low-power wake-up signals. Specifically, terminals supporting LP-WUR / LP-WUS will support the following two receivers:

[0133] The first type is the main receiver. This receiver is used to receive existing downlink signals from NR. Specifically, it has strong receiving performance and can achieve high transmission rates. However, it is also more complex and consumes more power.

[0134] The second type is the low-power wake-up receiver. This receiver is used to receive low-power signals. Specifically, low-power signals include LP-WUS and low-power synchronization signals (LP-SS). Its receiving performance is relatively weak, and its transmission rate is relatively limited, but at the same time, the receiver implementation is simple and has low complexity, so its power consumption is much lower than that of the main receiver.

[0135] For both of the aforementioned low-power signals, LP-SS and LP-WUS are either OOK signals or OOK signals superimposed with time-domain sequences. Correspondingly, the receiver only needs to perform basic envelope detection or time-domain correlation detection to demodulate the signal. Therefore, the overall power consumption of the receiver is extremely low.

[0136] LP-SS is typically transmitted periodically (e.g., every 320ms) and is mainly used for basic timing and synchronization.

[0137] LP-WUS is primarily used to indicate whether the terminal has turned on the main receiver and to detect relevant control signals. Specifically, it manifests as follows:

[0138] For idle terminals, LP-WUS is primarily used to indicate whether the terminal should detect a paging indication. Specifically, the network device configures the LP-WUS monitor occasion (LO) before the corresponding paging occasion (PO) within each paging cycle. The terminal detects the LO based on the low-power receiver within each paging cycle. When LP-WUS information is detected and indicates that the terminal should wake up, the terminal begins detecting the paging indication based on the master receiver.

[0139] For connected terminals, LP-WUS is primarily used to indicate whether the terminal should detect the PDCCH. Specifically, in one approach, the network device configures a low-power receiver (LO) before each C-DRX cycle. The terminal detects the LO before each C-DRX cycle based on the low-power receiver. When LP-WUS information is detected and indicates that the terminal should not wake up, the terminal does not start the on-duration timer (i.e., the active time timer) in the next C-DRX cycle. In another approach, the network device configures a periodic LO (during the inactive period of the C-DRX cycle). Correspondingly, the terminal periodically detects LP-WUS on the LO. When LP-WUS information is detected and indicates that the terminal should wake up, the terminal starts detecting the PDCCH based on the master receiver.

[0140] Thanks to the introduction of a new low-power receiver, the main receiver can shut down all or most modules when there is no paging information or PDCCH transmission. The terminal detects the LP-WUS signal based solely on the extremely low-power LP-WUR, thereby achieving deeper energy savings.

[0141] Furthermore, from the perspective of base stations, energy consumption is currently facing significant challenges. One approach is to use an on-demand method where terminals request necessary resources from the base station. When the terminal does not require the resources, the base station can refrain from transmitting and / or receiving, thus saving energy. Specifically, the uplink (UL) LP-WUS can utilize the downlink (DL) LP-WUS OOK signal, the NR preamble, or other NR signals, etc., and this application is not limited to these specific methods.

[0142] The following describes the specific process of the on-demand method.

[0143] System information (SI) includes two categories: minimum system information (MSI) and other system information (OSI). The master information block (MIB) in the MSI is used for radio frame synchronization, while system information block 1 (SIB1) is used for common configuration of cell physical channels and cell camping parameters. MSI is essential information for terminals camping on 5G cells and is periodically broadcast by the 5G base station. OSI is optional information for 5G cells, used for neighbor cell measurement and reselection configuration, and is broadcast periodically or on demand, including SIB2-SIB9.

[0144] If SIs are all broadcast, the base station needs to transmit SIs in each beam direction, consuming more system resources. NR introduces an on-demand method to obtain OSIs. SIB1 is always broadcast, and the si-SchedulingInfo field of SIB1 specifies whether the OSI is broadcast or on-demand. That is, if the OSI is periodically broadcast, the UE can attempt to receive and parse the corresponding system information based on the OSI scheduling information indicated in SIB1; if the OSI is broadcast on demand, the UE can request the base station to broadcast the OSI.

[0145] In the general process, the base station assigns a specified preamble index to the SI, and the UE requests the base station to send the SI by sending a physical random access channel (PRACH). The base station responds to the UE by sending Msg2. The UE only needs to determine that the random access preamble identifier (RAPID) in Msg2 is consistent with the preamble index sent by the UE to consider that the base station has received the UE's request.

[0146] Current 5G systems support on-demand system information (SI) via messages 1 (Msg1) and 3 (Msg3) on the random access channel (RACH). Specifically, the UE can send a system information request (SI request) to the base station, requesting the base station to send the corresponding SI. If the base station has configured dedicated random access resources for the UE, the UE sends the SI request in Msg1 (non-contention-based random access); otherwise, it sends it in Msg3 (contention-based random access). After receiving the SI request, the base station schedules the SI within the corresponding SI-window.

[0147] The following is an example of the process of obtaining SI through a non-contention-based random access procedure.

[0148] If the si-SchedulingInfo field in the SIB1 message includes si-RequestConfig or si-RequestConfigSUL, it indicates that the SI can be obtained through a non-contention-based random access procedure. The RRC will trigger the Medium Access Control (MAC) layer to initiate an initial random access procedure using the Physical Random Access Channel (PRACH) preamble and PRACH resource contained in the si-RequestConfig message. At this time, the UE notifies the network side of system information using Msg1. The si-RequestConfig message includes:

[0149] (1) rach-OccasionsSI: Configuration for SI-specific RACH scenarios. If this field does not exist, the UE will use the corresponding parameters configured in the rachy-configcommon of the initial uplink BWP.

[0150] (2) si-RequestPeriod: The number of periods configured by SI-Request.

[0151] (3) si-RequestResources: If there is only one si-RequestResources in the list, then configure all SI messages for which si-BroadcastStatus is set to notBroadcasting. Otherwise, the first si-RequestResources in the list corresponds to the first SI message in scheduleInfoList with si-BroadcastStatus set to notBroadcasting, the second si-RequestResources in the list corresponds to the second SI message in scheduleInfoList with si-BroadcastStatus set to notBroadcasting, and so on.

[0152] The SI request sending process via mag1 is as follows: The base station configures dedicated random access resources for the SI request to the UE. These random access resources include the mapping between synchronization signal / physical broadcast channel blocks (SSBs) and random access occasions (ROs), as well as the mapping between SIs and preambles. When sending random access, the base station selects the preamble corresponding to the requested SI. The base station determines the SI requested by the UE based on the detected preamble and determines the transmission beam of the SI based on the RO where the preamble is located. The UE confirms that the base station has received the SI request through a random access response (RAR). The RAR only contains the random access preamble identifier (RAPID).

[0153] Using the dedicated preamble sequence specified by the MSI, there will be no conflicts. The UE uses the random access radio network temporary identifier (RA_RNTI) to decode the RAR. The RA_RNTI is related to the physical random access channel (PRACH) resource. If the UE detects that the received preamble ID matches the one it sent, it considers that it has received the correct RAR.

[0154] When an SI request is sent via Msg1, the smallest unit of the request is a single SI message (i.e., a set of SIBs), and a RACH preamble and / or PRACH resource can be used to request multiple SI messages.

[0155] The following is an example of the process of obtaining an SI through a contention-based random access procedure.

[0156] If the si-SchedulingInfo field in SIB1 does not contain si-RequestConfig and si-RequestConfigSUL, the UE needs to trigger the RRCSystemInfoRequest message to notify the network to obtain system information. An SI request is sent via Msg3. The content of the RRCSystemInfoRequest message includes:

[0157] requested-SI-List: A list of requested SI messages. Based on the order of the SI message list configured in the schedulingInfoList of SI-schedulinginfo in SIB1, the first one corresponds to the first / leftmost listed SI message, and the second one corresponds to the second listed SI message.

[0158] A contention-based approach is used, sending the SI request via Msg3. A preamble sequence configured with SIBX is randomly used, which may result in collisions. Msg3 contains the UE's identifier, such as a Temporary Mobile Subscriber Identifier (SAE-TMSI) or a random number. This identifier is carried in Msg4 and scrambled with the S-TMSI. If the UE can parse it and the identifier matches, the UE wins.

[0159] The above is specified in the 5G standard. In the 6G stage, to further improve energy efficiency, more resources may be acquired on-demand. For example:

[0160] On-demand SSB: Base stations send SSBs at large intervals or without mandatory periodicity, requesting SSB resources through terminal requests. On-demand SI: Base stations send System Information (SI) at large intervals or without mandatory periodicity, requesting system information transmission through terminal requests. On-demand RRM; On-demand CSI, etc.

[0161] 3. Linear frequency modulated (LFM) signal

[0162] An LFM signal is a signal whose frequency changes linearly over time. Its frequency changes linearly with time and can be represented by the following formula (1):

[0163] Where s(t) represents the amplitude of the signal at time t, A represents the amplitude of the signal, f0 represents the starting frequency of the signal, and k represents the frequency modulation slope.

[0164] The frequency change rate of an LFM signal is determined by the modulation slope; the larger the modulation slope, the faster the frequency changes. The choice of the modulation slope needs to be adjusted according to the specific application scenario and requirements to achieve optimal performance.

[0165] LFM signals have wide applications in radar, communication, sonar and other fields. They have good anti-interference performance and range resolution, and can be used for target detection, range measurement, velocity measurement and other applications.

[0166] In radar applications, LFM signals are generated by a transmitter and transmitted through an antenna. When the signal encounters a target object, it is reflected back. The receiver receives the reflected signal and uses signal processing techniques to extract information such as the target object's distance and velocity. Radar typically uses linear frequency modulated continuous wave (LFMCW) or FMCW signals.

[0167] 4. Integrated communication and sensing

[0168] Communication-sensing integration is a key technology in next-generation wireless communication networks. It aims to integrate wireless communication and sensing functions into the same system, utilizing the various propagation characteristics of wireless signals to achieve sensing functions such as target localization, detection, imaging, and identification, acquire information about the surrounding physical environment, explore communication capabilities, and enhance user experience.

[0169] The basic principle of this sensing method is to transmit a sensing signal and simultaneously receive the echo signal reflected back from the environment. The time delay of the echo signal relative to the transmitted sensing signal reflects the distance to the target, and the Doppler frequency shift of the echo signal relative to the transmitted sensing signal reflects the velocity of the target. Here, the echo signal can also be called a reflected signal, and this application does not limit it to that.

[0170] 5. Wake up

[0171] The term "wake up a terminal device or network device" can have two meanings. The following will provide examples illustrating these two meanings.

[0172] The first type can be understood as activating terminal devices or network devices.

[0173] Specifically, waking up a terminal device can be understood as putting the terminal device into an active state. It can also be understood as some or all of the terminal device's components being powered on and activated, enabling communication. Conversely, if the terminal device is not woken up or activated, it is considered to have entered sleep mode, which can be understood as some or all of the terminal device's components being powered off or in standby mode.

[0174] Similarly, waking up a network device can be understood as putting the network device into an active state. It can also be understood as powering on and activating some or all of the network device's components, enabling communication. Conversely, if a network device is not woken up or activated, it is considered to be in sleep mode, meaning that some or all of its components are powered off or in standby mode.

[0175] The second type can be understood as enabling terminal devices or network devices to perform certain activities, such as measuring, sending and / or receiving control information, sending and / or receiving data, sensing, artificial intelligence (AI), requesting information (SSB, system information, paging, etc.), requesting reference signals, and communicating, at least one of these.

[0176] For example, the measurement can be any one of the following: radio resource management (RRM) measurement, beam (BM) measurement, channel state information (CSI) measurement, SSB measurement, time-frequency tracking, and phase tracking.

[0177] RRM measurement: Idle terminal equipment periodically performs RRM measurements to determine whether to reselect another cell. However, when the terminal equipment's data rate is low or its location remains unchanged, the need for cell reselection is not urgent. In this case, periodic RRM measurements would waste the terminal equipment's power consumption. Therefore, when the terminal equipment's data rate is low or its location remains unchanged, RRM measurements can be relaxed, for example, by increasing the RRM measurement period. For example, if the terminal equipment's data rate is less than a data rate threshold, and the reference signal received power (RSRP), reference signal received quality (RSRQ), or signal-to-interference plus noise ratio (SINR) measurements are greater than a threshold, the RRM measurement conditions can be relaxed by increasing the RRM measurement period, reducing the number of cells measured, or reducing the amount of load measured. RRM measurement includes measurements of the SSB (Special Support Block).

[0178] Beam measurement, also known as BM measurement, refers to the evaluation of the quality of received signals at network devices (e.g., base stations) or terminal devices (e.g., UEs). For example, the quality of received signals can be evaluated using RSRP.

[0179] CSI Measurement: Terminal devices report CSI to network devices, which then adjust scheduling and manage beams based on the CSI. Specifically, network devices configure a CSI-RS, terminal devices measure this CSI-RS and calculate CSI information, which is then reported to the network devices. CSI information includes: Channel Quality Indicator (CQI), Precoding Matrix Indicator (PMI), Precoding Type Indicator (PTI), and Rank Indicator (RI), etc.

[0180] SSB Measurement: SSB includes synchronization signals and broadcast signals. The synchronization signal consists of PSS and SSS, while the broadcast signal includes data from the physical broadcast channel (PBCH) and DMRS. When a terminal device measures an SSB, the network device first periodically transmits an SSB, which is transmitted via a specific beam in a specific direction. Then, the terminal device periodically measures the SSB to obtain its signal quality, such as RSRP.

[0181] Time-frequency tracking refers to the technique of tracking signals in the time and frequency domains. By utilizing the characteristics of signals in the time and frequency domains, algorithms and models are used to achieve accurate tracking and positioning of signals in order to cope with interference and changes encountered by signals during propagation.

[0182] Phase tracking (PTRS) refers to a process where a network device, based on the modulation and coding scheme (MCS) configured in the terminal device, the scheduling bandwidth, information reported by the terminal device, and the capabilities of the terminal device, selects a suitable criterion from multiple determining criteria to determine the frequency domain pattern of the PTRS, and then sends the PTRS to the terminal device. Upon receiving the PTRS, the terminal device uses it to track and correct the phase changes of the signal in real time. In this embodiment, the terminal device may also perform other measurements, such as measuring the energy level of the signal; however, this embodiment does not limit the scope of this application.

[0183] For example, the control information in the transmitted and / or received control information can be uplink control information (UCI), DCI, or other control information, such as RRC signaling, medium access control (MAC) control element (CE) signaling, or non-access stratum signaling (NAS) signaling, without limitation. When receiving DCI, since DCI is carried on PDCCH, the terminal device needs to perform PDCCH detection to obtain DCI.

[0184] It should be noted that the sending and / or receiving of control information in this application specifically includes: the awakened terminal device performing PDCCH detection, and the terminal device further acquiring DCI through the PDCCH, thereby realizing DCI reception. Furthermore, the terminal device transmits UCI through physical uplink control channel (PUCCH) or physical uplink shared channel (PUSCH).

[0185] PDCCH detection includes: PDCCH-only detection, PDCCH detection and physical downlink shared channel (PDSCH) reception and / or demodulation / decoding, PDCCH detection and PUSCH transmission and / or reception and / or demodulation / decoding, normal PDCCH detection, first-level PDCCH detection, and PDCCH signal detection. Through downlink scheduling information in the DCI, the terminal device knows how to receive data on the PDSCH; through uplink scheduling information in the DCI, the terminal device knows how to transmit data on the PUSCH.

[0186] PDCCH-only: This means that the terminal device is only in the state of PDCCH detection and does not perform other data transmission and reception operations.

[0187] PDCCH detection and PDSCH reception and / or demodulation / decoding: This refers to the terminal device obtaining the resources allocated by the PDCCH through detection, and the PDSCH using these resources for transmission. The DCI carried by the PDCCH can instruct the terminal device to detect the time domain resources and frequency domain resources of the PDSCH.

[0188] PDCCH detection and PUSCH transmission and / or reception and / or demodulation / decoding: This refers to the terminal device obtaining the DCI carried by the PDCCH through PDCCH detection. The uplink scheduling information in the DCI can indicate how the terminal device transmits data on the PUSCH.

[0189] Level 1 PDCCH detection: also known as primary PDCCH detection, is usually used to indicate relevant information about Level 2 PDCCH or Level 2 control information, such as whether Level 2 PDCCH exists, the time domain / frequency domain / spatial domain / code domain configuration of Level 2 PDCCH, or the aggregation level of Level 2 PDCCH.

[0190] For example, when a terminal device performs sensing, it can be understood as having the ability to perceive and analyze its own environment in real time. For instance, the terminal device can perceive people, objects, or the environment, acquire sensing information, process the data itself, or send it to a base station.

[0191] For example, AI communication by a terminal device can be understood as the terminal device using AI technology to achieve intelligent communication.

[0192] 6. Perception

[0193] Terminal devices or network devices (such as base stations) can sense and acquire power offset, angle offset, beam offset, code offset, time delay offset, Doppler offset, power spectrum offset, phase offset, amplitude offset, velocity offset, distance offset, etc. They can also acquire positioning information, location information, rate information, target detection, distance information, etc.

[0194] Power offset can be understood as the difference between the received signal power and the expected power. Power offset can be caused by factors such as path loss, shadowing effect, or multipath fading.

[0195] Angle offset can be understood as the difference between the angle at which a signal arrives at the receiving antenna and the expected angle. Angle offset can be caused by reflection, refraction, or scattering.

[0196] Beam offset can be understood as the difference between the direction of an antenna beam and its intended direction. Beam offset is caused by calibration errors of the antenna array or environmental changes.

[0197] Code offset can be understood as a time shift in the spreading code or pilot code, causing the code sequences at the receiving end and the transmitting end to be out of sync. Code offset can affect the performance of spread spectrum communication systems.

[0198] Delay offset can be understood as the time shift caused by the propagation delay of a signal along different paths during transmission. Delay offset may result in the signal received at the receiver being out of sync with the signal sent by the transmitter.

[0199] Doppler shift can be understood as a frequency change caused by the relative motion between the transmitter and receiver. The Doppler effect may cause the received signal frequency to differ from the transmitter's signal frequency.

[0200] Power spectrum offset can be understood as a change in the spectral characteristics of a signal, resulting in a power spectral density that differs from the expected value. Power spectrum offset can be caused by nonlinear effects or bandwidth limitations.

[0201] Phase offset can be understood as the difference between the phase of a signal and the expected phase. Phase offset can affect the demodulation accuracy of phase-modulated signals.

[0202] Amplitude offset can be understood as the difference between the signal's amplitude and the expected amplitude. Amplitude offset can affect the demodulation accuracy of amplitude-modulated signals.

[0203] Velocity offset can be understood as the change in signal characteristics caused by the relative velocity change between the transmitter and receiver. Velocity offset may be related to the Doppler effect.

[0204] Distance offset can be understood as the difference between the length of the signal propagation path and the expected path length. Distance offset can affect the signal's arrival time and strength.

[0205] In the embodiments of this application, the sensing performed by the terminal device or network device (such as a base station) can be understood as the terminal device or network device (such as a base station) possessing the ability to perceive and analyze its own environment in real time. For example, the terminal device or network device (such as a base station) can perceive human bodies, objects, or the environment, acquire sensing information, and perform data processing itself.

[0206] Facing the greater demands of more scenarios in 6G communication systems, network equipment and terminal devices will face challenges such as greater bandwidth, faster processing speeds, and more antennas. The first major challenge is power consumption. For network equipment, higher power consumption will lead to higher operating costs. For terminal devices, with limited increases in size, area, and battery capacity, higher power consumption and heat dissipation present even greater challenges.

[0207] In the initial protocol versions, 5G terminals consumed three times the power of fourth-generation (4G) terminals, resulting in severe heat dissipation issues and a poor user experience. With the evolution of the 3GPP R16–R19 protocols, each version standardized terminal power-saving features, and combined with product-network optimization, current terminal power consumption has been brought under control. However, despite the standardization of many terminal power-saving features, these are optimization features. Various reasons, such as increased operating costs, declining network KPIs, and uncertain market prospects, have prevented most of these power-saving features from being commercially deployed. Therefore, 5G has not effectively solved the power consumption problem.

[0208] To address power consumption issues and save energy, current research has proposed wake-up signals, which allow terminal or network devices to remain in a low-power sleep state most of the time, only needing to detect the wake-up signal at specific moments to wake them up. However, wake-up signals are typically only used for waking up terminal or network devices, and their function is relatively limited. Therefore, wake-up signals suffer from low practicality. Thus, the technical problem this application aims to solve is: how to improve the practicality of wake-up signals.

[0209] Based on the above, the communication method of this application embodiment will be described below by way of example.

[0210] Please refer to Figure 4, which is a flowchart illustrating a communication method provided in an embodiment of this application. It should be understood that the communication method shown in Figure 4 is applicable to the communication system 10 shown in Figure 1. Specifically, this communication method can be executed interactively by a first communication device and a second communication device, or it can be executed interactively by modules (e.g., circuits, chips, chip systems, or processors) within the first and second communication devices. This application does not specifically limit this. The following description uses the first and second communication devices as the executing entities. As shown in Figure 3, the communication method may include the following steps:

[0211] S401, the second communication device generates the first signal.

[0212] In some feasible implementations, the second communication device can generate a first signal. This first signal can be used for wake-up and sensing.

[0213] Optionally, there can be multiple ways to implement the first signal. Several possible implementations of the first signal are illustrated below.

[0214] In one implementation method, the first signal can be a dedicated sensing signal, such as an LFM signal, a chirp signal, or an OTFS signal. In other words, the first signal can reuse the sensing signal, making it usable for wake-up as well. This design approach for the first signal helps improve the wake-up capacity of the communication system.

[0215] In the second implementation method, the first signal can be a wake-up signal, such as an OOK signal, an OFDM signal, or a DFT-S-OFDM signal. In other words, the first signal can reuse the wake-up signal, allowing it to also be used for sensing. This design approach for the first signal helps improve the communication capacity of the communication system.

[0216] In the third implementation method, the first signal can be a communication signal, such as SSB, CSI-RS, DMRS, etc.

[0217] In the fourth implementation method, the first signal can be a traditional uplink signal, such as a preamble, a sounding reference signal (SRS), a physical uplink control channel (PUCCH), or a physical uplink shared channel (PUSCH).

[0218] In the fifth implementation method, the first signal can be a unified uplink reference signal (URS), an uplink motion measurement signal, an uplink pilot signal, etc.

[0219] In some possible scenarios, the first signal can also be a combination of the above-mentioned implementation methods. For example, the first signal can be a combination of the chirp signal and the OTFS signal. This application does not impose specific limitations on the implementation method of the first signal.

[0220] In the above implementation, the design allows the sensing signal to also be used for wake-up, or vice versa, enriching the functionality of the first signal and enabling it to be used for both wake-up and sensing, thus improving its practicality. Furthermore, when the first signal is applied to a communication system, sending the first signal can simultaneously achieve wake-up and sensing, which helps reduce the occupation of system frequency domain resources and system resource overhead, thereby increasing its commercial viability.

[0221] It should be understood that the first signal can also be used to achieve other functions, such as synchronization, cell information acquisition, time offset acquisition, frequency offset acquisition, phase offset acquisition, channel estimation, channel state information, transmission data, cell measurement, beam measurement, etc., and this application does not limit it in this regard.

[0222] It should be noted that, in the embodiments of this application, the first signal can also be referred to as a wake-up signal. Furthermore, in possible scenarios, the first signal can be a low-power wake-up signal.

[0223] In one alternative implementation, the first signal may carry second information. The second information may be used to instruct the first communication device to wake up, and / or to instruct the first communication device to perform sensing.

[0224] The following are three possible implementations of the first signal carrying the second information.

[0225] In method one, the first signal carries the second information through frequency upsampling and / or frequency downsampling.

[0226] Please refer to Figure 5, which is a schematic diagram of the signal processing principle provided in this application embodiment. Here, we take a chirp signal as the first signal for illustration. As shown in Figure 5, the input original information is first multiplied with the chirp signal to obtain a mixed signal. The input original information can be the second information mentioned above. Then, the mixed signal enters the channel for transmission, during which the signal is subject to various interferences such as noise and fading. The signal exiting the channel enters the matched filter module, which processes the signal, enhancing the useful signal matched to the filter, suppressing other mismatched noise and interference, and improving the signal-to-noise ratio. Further, the filtered signal enters the judgment module, which judges the signal according to preset rules and outputs the processed signal based on the judgment result. It should be understood that the output processed signal is the first signal mentioned above, which, after frequency up-amplification and / or frequency down-amplification, can include an up-amplified signal and / or a down-amplified signal, wherein the up-amplified signal and / or down-amplified signal can carry the second information.

[0227] Method two involves using a first signal after signal processing to carry the second information. Signal processing includes modulating the first signal and performing linear frequency modulation (CFM) spread spectrum (i.e., chirp spread spectrum).

[0228] Please refer to Figure 6, which is a schematic diagram of another signal processing principle provided in this application embodiment. Here, we take a chirp signal as the first signal as an example for explanation. As shown in Figure 6, the input raw information first enters the mapper, where the input signal is converted into a specific symbol or encoding form for subsequent processing, such as mapping binary data into symbols suitable for modulation. The input raw information can be the second information mentioned above. Then, the chirp signal is added to and mixed with the mapped signal. Further, the mixed signal enters the channel for transmission, during which it is subject to various interferences such as noise and fading. The signal exiting the channel enters the matched filter module, which processes the signal, enhancing the useful signal matched to the filter, suppressing other mismatched noise and interference, and improving the signal-to-noise ratio. Then, the filtered signal enters the demapper to restore the signal to a representation close to the original. The demapped signal enters the decision module, which judges the signal according to preset rules and outputs the processed signal based on the judgment result. It should be understood that the output processed signal is the first signal mentioned above, and at this time, the first signal can carry the second information.

[0229] Method three involves using a first signal after signal processing to carry the second information. Signal processing includes modulation of the first signal, linear frequency modulation spread spectrum, and pseudo-noise spread spectrum.

[0230] Please refer to Figure 7, which is a schematic diagram of another signal processing principle provided in this application embodiment. Here, we take a chirp signal as the first signal for illustration. As shown in Figure 7, the original input information first enters the mapper, where the input signal is converted into specific symbols or encoding forms for subsequent processing, such as mapping binary data into symbols suitable for modulation. The original input information can be the second information mentioned above. The mapped signal enters the PN spreading module, where it is processed with a pseudo-random noise sequence to expand the signal spectrum, improving the signal's anti-interference capability and confidentiality. Then, the chirp signal is added to and mixed with the spread signal to form a new signal form. Further, the mixed signal enters the channel for transmission, during which it is subject to various interferences such as noise and fading. The signal exiting the channel enters the matched filtering module, where the matched filter enhances the useful signal, suppresses noise, and improves the signal-to-noise ratio. The filtered signal enters the despreading module, which is the reverse process of spreading, to restore the signal to its original spectral width and separate the original signal characteristics. Further, the demapper can process the despread signal to restore it to a representation close to the original input. The demapped signal enters the judgment module, which judges the signal according to preset rules and outputs the processed signal based on the judgment result. It should be understood that the output processed signal is the first signal mentioned above, and at this time, the first signal can carry the second information.

[0231] In one optional implementation, the method of carrying the second information is associated with the user capacity currently configured in the communication system, which includes a first communication device and a second communication device. Alternatively, the method of carrying the second information can be determined based on the user capacity currently configured in the communication system. Optionally, the method of carrying the second information can be determined by a network device based on the user capacity currently configured in the communication system.

[0232] In a communication system, user capacity refers to the maximum number of users that the system can support simultaneously while ensuring a certain level of communication quality. It is one of the important indicators for measuring the performance of a communication system.

[0233] Specifically, when the user capacity currently configured in the communication system is lower than or equal to the first threshold, the first signal can carry the second information using the method described above. When the user capacity is higher than the first threshold but lower than the second threshold, the first signal can carry the second information using the method described above. When the user capacity is higher than or equal to the second threshold, the first signal can carry the second information using the method described above.

[0234] In the above implementation, the second communication device selects an appropriate information carrying method based on the user capacity currently configured in the communication system, which can minimize power consumption while ensuring capacity performance.

[0235] S402, the second communication device sends a first signal to the first communication device. Correspondingly, the first communication device receives the first signal.

[0236] In some feasible implementations, after generating the first signal, the second communication device can send the first signal to the first communication device. Correspondingly, the first communication device can receive the first signal.

[0237] The first signal is used to wake up and / or sense the first communication device. In other words, the first signal is used to wake up the first communication device and / or for the first communication device to perform sensing. That is, the first signal has both wake-up and sensing functions.

[0238] In one possible implementation, the second communication device may send a first signal to the first communication device at a first detection timing, the first signal being usable for waking up the first communication device. And / or, the second communication device may send a first signal to the first communication device at a second detection timing, the first signal being usable for sensing by the first communication device.

[0239] Accordingly, the first communication device may receive the first signal at a first detection time to wake up. And / or, the first communication device may receive the first signal at a second detection time to sense.

[0240] In one optional implementation, the time-frequency resources of the first detection timing and the second detection timing can be the same; that is, the first detection timing and the second detection timing can be understood as the same detection timing. In this case, the first signal transmitted on the first detection timing (or the second detection timing) can be used for waking up the first communication device or for sensing by the first communication device.

[0241] In other words, the first communication device and the second communication device transmit the first signal at the same detection time, that is, they reuse the same detection time, which can simultaneously realize the wake-up and sensing of the first communication device.

[0242] In the above implementation, the first communication device and the second communication device can simultaneously achieve wake-up and sensing through the same detection timing, instead of achieving wake-up and sensing through multiple different detection timings. This helps to reduce the resource overhead of detection timing in the communication system and also helps to reduce the power consumption of the two communication devices.

[0243] In another alternative implementation, the time-frequency resources of the first detection timing and the second detection timing may be different; that is, the first detection timing and the second detection timing are different detection timings. In this case, the first detection timing and the second detection timing can also be understood as two detection timings with different functions. That is, the first detection timing can be understood as a detection timing used to realize wake-up, and the second detection timing can be understood as a wake-up timing used to realize perception.

[0244] For example, please refer to Figure 8, which is a schematic diagram of a detection timing provided by an embodiment of this application. As shown in Figure 8, the example here is that the first detection timing and the second detection timing have the same frequency domain resources but different time domain resources. Assume there are seven detection timings sequentially in the time domain, where the first and sixth detection timings are the first detection timings, and the other detection timings are the second detection timings. Here, black squares represent the first detection timings, and blank squares represent the second detection timings. Specifically, the first signal transmitted at the first detection timing can be used to achieve wake-up, and the first signal transmitted at the second detection timing can be used to achieve sensing.

[0245] In the above implementation, the first and second communication devices can achieve wake-up and sensing separately through two different detection timings, rather than simultaneously achieving wake-up and sensing through a single detection timing. This allows for more flexible configuration of the detection timings for wake-up and sensing, which helps reduce power consumption for both devices. Furthermore, this method avoids potential interference issues that may arise when waking up and sensing simultaneously, thereby improving the reliability of wake-up and the accuracy of sensing.

[0246] It should be noted that in possible scenarios, where only one of the first detection timing and the second detection timing is configured—for example, only the first detection timing is configured—the first signal transmitted during the first detection timing can be used not only to wake up the first communication device but also to enable the first communication device to sense. Thus, by transmitting the first signal during a single detection timing, the first and second communication devices can simultaneously achieve wake-up and sensing.

[0247] Optionally, the second communication device may send a first signal on some or all instances of the first detection timing, which can be used for both wake-up and sensing. That is, all instances of the first detection timing can be used to achieve wake-up, while some or all instances of the first detection timing can also be used to achieve sensing.

[0248] It should be understood that in the embodiments of this application, there may be only one or more first detection opportunities in the time domain. It should be noted that when there are multiple first detection opportunities in the time domain, any one of these multiple opportunities can be understood as an instance of the first detection opportunity.

[0249] For example, assuming the period of the first detection opportunity is 40ms, and there are three first detection opportunities in the time domain, then there is one first detection opportunity at 0ms, 40ms, and 80ms respectively. These three first detection opportunities can be collectively referred to as the first detection opportunities. The first detection opportunity at 40ms can be understood as an instance of the first detection opportunity. Similarly, the first detection opportunity at 0ms can also be understood as an instance of the first detection opportunity, and the first detection opportunity at 80ms can also be understood as an instance of the first detection opportunity.

[0250] For example, please refer to Figure 8 above. Based on the content shown in Figure 8, both the first and sixth detection opportunities are considered first detection opportunities. The first detection opportunity can be considered an instance of the first detection opportunity, or a partial instance of the first detection opportunity. The sixth detection opportunity can also be considered an instance of the first detection opportunity.

[0251] It is understood that some or all instances of the first detection timing (hereinafter referred to as the first sub-detection timing for ease of explanation), as well as the second detection timing, can be used to implement perception.

[0252] The following exemplifies two possible methods by which the first and second communication devices achieve sensing through a first sub-detection timing and a second detection timing within any wake-up cycle. In this embodiment, the time interval during which the communication device is woken from a sleep state, completes related operations, and then returns to a sleep state can be referred to as a wake-up cycle. Optionally, a wake-up cycle may include at least one first detection timing and at least one second detection timing. For ease of understanding, the following explanation uses an example where a wake-up cycle includes at least one first sub-detection timing and at least one second detection timing.

[0253] In one method, the second communication device sends a first signal to the first communication device at both the first sub-detection time and the second detection time. Correspondingly, the first communication device can receive the first signal at both the first sub-detection time and the second detection time to achieve sensing.

[0254] In the second method, the second communication device can send a first signal to the first communication device at either the first sub-detection time or the second detection time. Correspondingly, the first communication device can send the first signal at either the first sub-detection time or the second detection time to achieve sensing.

[0255] In one alternative implementation, before any wake-up cycle (e.g., the first wake-up cycle), the second communication device may send third information to the first communication device. This third information is used to activate whether the detection opportunity to be used during the first wake-up cycle is a first sub-detection opportunity or a second detection opportunity. Accordingly, after receiving the third information, the first communication device may activate either the first sub-detection opportunity or the second detection opportunity, and further receive the first signal at the activated detection opportunity.

[0256] It should be noted that in scenarios with multiple wake-up cycles, the first communication device and the second communication device combine the above two methods to transmit the first signal. For example, within one wake-up cycle, the first signal can be transmitted using method one. In the next wake-up cycle, the first signal can be transmitted using method two. This application is not limited in this respect.

[0257] In one possible implementation, when using the second method described above and multiple wake-up cycles exist, the first communication device and the second communication device can alternately use the first sub-detection time and the second detection time, that is, alternately send the first signal during the first sub-detection time and the second detection time to achieve the sensing capability of the first communication device. For example, in one wake-up cycle, the second communication device can send the first signal to the first communication device during the first sub-detection time, but not during the second detection time. Correspondingly, the first communication device can receive the first signal during the first sub-detection time. In the next wake-up cycle, the second communication device can send the first signal to the first communication device during the second detection time, but not during the first sub-detection time. Correspondingly, the first communication device can receive the first signal during the second detection time.

[0258] For example, please refer to Figure 9, which is a schematic diagram of another detection timing provided by an embodiment of this application. As shown in Figure 9, it is assumed that there are seven detection timings sequentially in the time domain. Specifically, the first, second, fourth, fifth, and seventh detection timings are all first detection timings. Among them, the second and fifth detection timings can be used for both wake-up and perception, i.e., the first sub-detection timings. The third and sixth detection timings are the second detection timings. Here, black squares represent the first detection timings used only for wake-up, squares filled with slashes represent the first detection timings used for both wake-up and perception (i.e., the first sub-detection timings), and blank squares represent the second detection timings used for perception.

[0259] Specifically, during the first wake-up cycle, the second communication device may send a first signal to the first communication device at a second detection opportunity (i.e., a first sub-detection opportunity). Correspondingly, the first communication device receives the first signal at the first sub-detection opportunity to achieve sensing. During the second wake-up cycle, the second communication device may send a first signal to the first communication device at a sixth detection opportunity (i.e., a second detection opportunity). Correspondingly, the first communication device receives the first signal at the second detection opportunity to achieve sensing.

[0260] Optionally, the second communication device may send a first signal on some or all instances of the second detection timing, which can be used for both sensing and wake-up. That is, all instances of the second detection timing can be used to achieve sensing, while some or all instances of the second detection timing can also be used to achieve sensing.

[0261] Here, the example of the second detection timing is similar in meaning to the example of the first detection timing described above, and can be found in the above content for details, so it will not be repeated here.

[0262] It is understood that some or all instances of the second detection timing (hereinafter referred to as the second sub-detection timing for ease of explanation), as well as the first detection timing, can be used to implement wake-up.

[0263] The following describes two possible methods for waking up the first and second communication devices via a first detection timing and a second sub-detection timing within any wake-up cycle. Optionally, a wake-up cycle may include at least one first detection timing and at least one second detection timing. For ease of understanding, the following explanation uses an example where a wake-up cycle includes at least one first detection timing and at least one second sub-detection timing.

[0264] In one method, the second communication device sends a first signal to the first communication device at both the first detection timing and the second sub-detection timing. Correspondingly, the first communication device can receive the first signal at both the first detection timing and the second sub-detection timing to achieve wake-up.

[0265] In the second method, the second communication device can send a first signal to the first communication device at either the first detection timing or the second sub-detection timing. Correspondingly, the first communication device can receive the first signal at either the first detection timing or the second sub-detection timing to achieve wake-up.

[0266] In one alternative implementation, before any wake-up cycle (e.g., the second wake-up cycle), the second communication device may send a fourth message to the first communication device. This fourth message is used to activate whether the detection timing to be used during the second wake-up cycle is a first detection timing or a second sub-detection timing. Accordingly, after receiving the fourth message, the first communication device may activate either the first detection timing or the second sub-detection timing, and further receive the first signal during the activated detection timing.

[0267] It should be noted that in scenarios with multiple wake-up cycles, the first communication device and the second communication device combine the above two methods to transmit the first signal. For example, within one wake-up cycle, the first signal can be transmitted using method one. In the next wake-up cycle, the first signal can be transmitted using method two. This application is not limited in this respect.

[0268] In one possible implementation, when using the above-mentioned method two and there are multiple wake-up cycles, the first communication device and the second communication device can alternately use the first detection timing and the second sub-detection timing, that is, alternately send the first signal on the first detection timing and the second sub-detection timing to wake up the first communication device.

[0269] Here, the specific process by which the second communication device wakes up through the first detection timing and the second sub-detection timing is similar to the process by which the second communication device achieves perception through the first sub-detection timing and the second detection timing described above. For details, please refer to the relevant description above, and it will not be repeated here.

[0270] In one alternative implementation, the first communication device and the second communication device can acquire first information, which can be used to indicate resource configuration for the first detection timing and / or the second detection timing.

[0271] Optionally, the first information may be pre-defined by a protocol or pre-configured by the network device; this application does not limit this. It should be noted that, if the first information is pre-configured by the network device, and the first communication device is a network device and the second communication device is a terminal device, then the first communication device can send the first information to the second communication device. Similarly, if the first communication device is a terminal device and the second communication device is a network device, then the second communication device can send the first information to the first communication device.

[0272] Specifically, the resource configuration for detection timing can include the configuration of time-frequency space code power resources, that is, the configuration of time domain resources, frequency resources, spatial resources, code resources, and power resources.

[0273] Optionally, the first detection timing and the second detection timing can be periodic, non-periodic, or semi-continuous, etc. This application does not limit this.

[0274] When the detection timing is periodic, the configuration of the temporal resources for the detection timing can include a period configuration value and a period offset value. The period configuration value refers to the time interval between every two detection timings, for example, 40ms. The period offset value refers to the time offset of a detection timing relative to the start point of the period, for example, 3ms.

[0275] When the detection timing is non-periodic, the configuration of time-domain resources for the detection timing can include the start symbol, start frequency, etc. The start symbol is the first symbol position of the detection timing in the time-frequency resources, such as the third OFDM symbol. The start frequency refers to the frequency position at which the detection timing begins in the frequency domain.

[0276] When the detection timing is semi-persistent, the configuration of the temporal resources for the detection timing can include the start symbol, period configuration value, period offset value, etc.

[0277] S403, the first communication device wakes up and / or senses based on the first signal.

[0278] In some feasible implementations, after receiving the first signal, the first communication device can be woken up and / or sensed based on the first signal.

[0279] In one possible implementation, the first communication device may receive the first signal at a first detection timing, and may further be woken up based on the first signal. And / or, the first communication device may receive the first signal at a second detection timing, and may further be able to sense based on the first signal.

[0280] In one alternative implementation, when the time-frequency resources of the first detection time and the second detection time are the same, after the first communication device receives the first signal at the first detection time (or the second detection time), it can simultaneously perform wake-up and sensing based on the first signal.

[0281] In another alternative implementation, when the time-frequency resources of the first detection timing and the second detection timing are different, the first communication device, after receiving the first signal at the first detection timing, can be woken up based on the first signal. The first communication device, after receiving the first signal at the second detection timing, can perform sensing based on the first signal.

[0282] Optionally, after receiving the first signal at some or all instances of the first detection time, the first communication device may also perform sensing based on the first signal.

[0283] Optionally, after receiving the first signal in some or all instances of the second detection timing, the first communication device may also wake up based on the first signal.

[0284] In this embodiment, the second communication device can simultaneously achieve sensing and wake-up of the first communication device by sending a first signal to the first communication device, without needing to send separate sensing and wake-up signals. This reduces the resource overhead of the communication system. Furthermore, the first signal can be used for both wake-up and sensing, enriching its functionality and improving its practicality, thereby increasing the likelihood of commercial deployment of the first signal.

[0285] Optionally, when the first signal is a low-power wake-up signal, the first communication device and the second communication device can achieve low-power wake-up of the first communication device by transmitting the first signal, which helps to reduce the power consumption of the first communication device and the second communication device. Furthermore, the first communication device and the second communication device can reduce their implementation complexity by transmitting the first signal through a low-power transmitter and a low-power receiver.

[0286] The communication method provided by the embodiments of this application has been described in detail above with reference to Figures 4 to 9. The communication device provided by the embodiments of this application will now be described in detail with reference to Figures 10 and 11. It should be understood that the description of the embodiments of the communication device corresponds to the description of the embodiments of the communication method; therefore, any parts not described in detail can be referred to the method embodiments above.

[0287] Please refer to Figure 10, which is a schematic diagram of the structure of a communication device provided in an embodiment of this application. As shown in Figure 10, the communication device 100 may include a transceiver unit 101 and a processing unit 102.

[0288] In some feasible implementations, the communication device 100 may correspond to the first communication device mentioned above, or to a component (such as a circuit, chip, or chip system) configured in the first communication device.

[0289] In a specific implementation, the transceiver unit 101 is used to receive a first signal. The first signal includes at least one of a chirp signal, an LFM signal, an OTFS signal, an OOK signal, an OFDM signal, or a DFT-S-OFDM signal. The processing unit 102 is used to perform wake-up and / or sensing based on the first signal.

[0290] In one possible implementation, the transceiver unit 101 is further configured to receive a first signal at a first detection timing, the first signal being used for wake-up. The transceiver unit 101 is also configured to receive a first signal at a second detection timing, the first signal being used for sensing.

[0291] In one possible implementation, the transceiver unit 101 is further configured to receive a first signal at some or all instances of the first detection timing, the first signal being used for sensing.

[0292] In one possible implementation, the transceiver unit 101 is further configured to receive a first signal on some or all instances of the second detection timing, the first signal being used for wake-up.

[0293] In one possible implementation, the processing unit 102 is further configured to acquire first information. The first information is used to indicate resource configuration for a first detection timing and / or a second detection timing.

[0294] In one possible implementation, the first signal carries second information. The second information is used to instruct the first communication device to wake up, and / or to instruct the first communication device to perform sensing.

[0295] In one possible implementation, the second information is carried in a manner that includes at least one of the following: the first signal is carried by upsampling and / or downsampling. The information is carried by a processed first signal, whereby the signal processing includes modulation of the first signal and linear frequency modulation spread spectrum, or the signal processing includes modulation of the first signal, linear frequency modulation spread spectrum, and pseudo noise (PN) spread spectrum.

[0296] In one possible implementation, the method of carrying the second information is associated with the user capacity currently configured in the communication system where the first communication device is located.

[0297] In one possible implementation, when the user capacity is less than or equal to the first threshold, the second information is carried by means of an up-frequency first signal or a down-frequency first signal included in the first signal.

[0298] In one possible implementation, when the user capacity is higher than a first threshold but lower than a second threshold, the second information is carried by a first signal after signal processing, wherein the signal processing includes modulation of the first signal and linear frequency modulation spread spectrum.

[0299] In one possible implementation, when the user capacity is higher than or equal to the second threshold, the second information is carried by a first signal after signal processing, wherein the signal processing includes modulation, linear frequency modulation spread spectrum, and pseudo-noise spread spectrum of the first signal.

[0300] In one possible implementation, the first signal is a low-power wake-up signal. That is, the first signal is also used for low-power wake-up of the first communication device.

[0301] In some feasible implementations, the communication device 100 may correspond to the second communication device mentioned above, or to a component (such as a circuit, chip, or chip system) configured in the second communication device.

[0302] In a specific implementation, processing unit 102 is used to generate a first signal. The first signal includes at least one of a chirp signal, an LFM signal, an OTFS signal, an OOK signal, an OFDM signal, or a DFT-S-OFDM signal. Transceiver unit 101 is used to transmit the first signal. The first signal is used for waking up and / or sensing the first communication device.

[0303] In one possible implementation, the transceiver unit 101 is further configured to transmit a first signal at a first detection timing, the first signal being used to wake up the first communication device. The transceiver unit is also configured to transmit a first signal at a second detection timing, the first signal being used for sensing by the first communication device.

[0304] In one possible implementation, the transceiver unit 101 is further configured to transmit a first signal on some or all instances of the first detection timing, the first signal being used for sensing by the first communication device.

[0305] In one possible implementation, the transceiver unit 101 is further configured to transmit the first signal on some or all instances of the second detection timing, the first signal also being used to wake up the first communication device.

[0306] In one possible implementation, the processing unit 102 is further configured to acquire first information. The first information is used to indicate resource configuration for a first detection timing and / or a second detection timing.

[0307] In one possible implementation, the first signal carries second information. The second information is used to instruct the first communication device to wake up, and / or to instruct the first communication device to perform sensing.

[0308] In one possible implementation, the second information is carried in a manner that includes at least one of the following: the first signal is carried by upsampling and / or downsampling. The information is carried by a processed first signal, whereby the signal processing includes modulation of the first signal and linear frequency modulation spread spectrum, or the signal processing includes modulation of the first signal, linear frequency modulation spread spectrum, and pseudo noise (PN) spread spectrum.

[0309] In one possible implementation, the method of carrying the second information is associated with the user capacity currently configured in the communication system where the first communication device is located.

[0310] In one possible implementation, when the user capacity is less than or equal to the first threshold, the second information is carried by means of an up-frequency first signal or a down-frequency first signal included in the first signal.

[0311] In one possible implementation, when the user capacity is higher than a first threshold but lower than a second threshold, the second information is carried by a first signal after signal processing, wherein the signal processing includes modulation of the first signal and linear frequency modulation spread spectrum.

[0312] In one possible implementation, when the user capacity is higher than or equal to the second threshold, the second information is carried by a first signal after signal processing, wherein the signal processing includes modulation, linear frequency modulation spread spectrum, and pseudo-noise spread spectrum of the first signal.

[0313] In one possible implementation, the first signal is a low-power wake-up signal. That is, the first signal is also used for low-power wake-up of the first communication device.

[0314] Please refer to Figure 11, which is a schematic diagram of another communication device provided in an embodiment of this application. This communication device 110 can be used to implement the operations performed by the first or second communication device in the above embodiments, or, the communication device 110 can be the first or second communication device described above. The communication device 110 includes: a processor 111, a memory 112, and a bus system 113.

[0315] The memory 112 includes, but is not limited to, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), or compact disc read-only memory (CD-ROM). The memory 112 is used to store related instructions and data. The memory 112 stores executable modules or data structures, or subsets thereof, or extended sets thereof:

[0316] Operation instructions: This includes various operation instructions used to perform various operations.

[0317] Operating system: includes various system programs used to implement various basic business functions and handle hardware-based tasks.

[0318] Figure 11 shows only one memory, but of course, multiple memories can be set as needed.

[0319] In one possible implementation, the communication device 110 may include only the processor 111 and the bus system 113, that is, it may exclude the memory 112.

[0320] The communication device 110 may further include a transceiver 114. The transceiver 114 may be a communication module or a transceiver circuit. In the embodiments of this application, the transceiver 114 is used to perform the message sending and receiving operations described in the above embodiments.

[0321] Processor 111 can be at least one, and can specifically be a controller, central processing unit (CPU), general-purpose processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA), or other programmable logic device, transistor logic device, hardware component, or any combination thereof. Processor 111 can also be a combination that implements computing functions, such as including one or more microprocessor combinations, a combination of DSP and microprocessor, etc.

[0322] In specific applications, the various components of the communication device 110 are coupled together through a bus system 113. This bus system 113 may include not only a data bus but also a power bus, a control bus, and a status signal bus. However, for clarity, all buses are labeled as bus system 113 in Figure 11. Figure 11 is only schematically illustrated for ease of representation.

[0323] In specific implementation, the communication device 110 can execute the steps of the method performed by the first device, the second device, or the sensing device in the above embodiments. Specifically, when the communication device 110 is used to implement the various steps performed by the first device, the second device, or the sensing device in the communication method provided in the embodiments, the processor 111 can implement the function of the processing unit 102, and the transceiver 114 can implement the function of the transceiver unit 101.

[0324] It should be noted that in practical applications, 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, DSP, ASIC, FPGA, or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It 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, and the processor reads the information in the memory and, in conjunction with its hardware, completes the steps of the above methods.

[0325] 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. Non-volatile memory can be ROM, programmable read-only memory (PROM), EPROM, electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be 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 described in the embodiments of this application is intended to include, but is not limited to, these and any other suitable types of memory.

[0326] This application also provides a computer-readable medium having a computer program stored thereon, which, when executed by a computer, implements the method steps performed by the first communication device or the second communication device in the above embodiments.

[0327] This application also provides a computer program product that, when executed by a computer, implements the method steps performed by the first communication device or the second communication device in the above embodiments.

[0328] This application also provides a chip including at least one processor. The at least one processor is configured to execute computer execution instructions to cause a device on which the chip is mounted to perform the method steps executed by the first communication device or the second communication device in the above embodiments.

[0329] Optionally, the chip may also include interface circuitry. This interface circuitry is used to receive computer execution instructions and transmit them to the processor.

[0330] This application also provides a chip system including a processor for supporting devices mounted on the chip system in implementing the method steps performed by the first or second communication device in the above embodiments, such as generating or processing data and / or information involved in the above methods. In one possible design, the chip system further includes a memory for storing program instructions and data necessary for the data transmission device. The chip system may be composed of chips or may include chips and other discrete devices.

[0331] Optionally, the chip system may also include interface circuitry. This interface circuitry can be used to receive computer-executed instructions and transmit them to the processor.

[0332] Please refer to Figure 12, which is a schematic diagram of another communication device provided in an embodiment of this application. The communication device 120 may include a processor 121 and an interface circuit 122. The interface circuit 122 can be used to receive signals from other communication devices besides the communication device 120 and transmit them to the processor 121, or to send signals from the processor 121 to other communication devices besides the communication device 120. The processor 121 can be used to execute computer programs or instructions through logic circuits to implement the communication methods described in the preceding embodiments.

[0333] In some possible designs, the communication device 120 may be the first communication device described above, or a device including the first communication device described above, or a device included in the first communication device described above, such as a chip system. The communication device 120 may also be the second communication device described above, or a device including the second communication device described above, or a device included in the second communication device described above.

[0334] This application also provides a communication system, which includes at least the first communication device and the second communication device described above. The first communication device and the second communication device work together to implement the communication method described in the preceding embodiments.

[0335] In the above method embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., digital video disc (DVD), or a semiconductor medium (e.g., solid-state disk (SSD)).

[0336] In the various embodiments of this application, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions of different embodiments are consistent and can be referenced by each other. The technical features of different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0337] It is understood that the various numerical designations used in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application. The order of the process numbers described above does not imply the order of execution; the execution order of each process should be determined by its function and internal logic.

[0338] The above description is merely a preferred embodiment of the technical solution of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A communication method, characterized in that, Applied to a first communication device, the method includes: Receive a first signal, wherein the first signal includes at least one of the following: a chirp signal, a linear frequency modulation (LFM) signal, an orthogonal time-frequency space (OTFS) signal, an on / off keying (OOK) signal, an orthogonal frequency division multiplexing (OFDM) signal, or an orthogonal frequency division multiplexing (DFT-S-OFDM) signal with discrete Fourier transform spread spectrum. Wake-up and / or sensing are performed based on the first signal.

2. The method according to claim 1, characterized in that, Receiving the first signal includes: The first signal is received at a first detection time, wherein the first signal is used for wake-up; And / or, receive the first signal at a second detection timing, wherein the first signal is used for sensing.

3. The method according to claim 2, characterized in that, Receiving the first signal at the first detection time includes: The first signal is received in some or all instances of the first detection timing, wherein the first signal is used for sensing.

4. The method according to claim 2, characterized in that, Receiving the first signal at the second detection time includes: The first signal is received in some or all instances of the second detection timing, wherein the first signal is used for wake-up.

5. The method according to any one of claims 2-4, characterized in that, The method further includes: Obtain first information, wherein the first information is used to indicate the resource configuration for the first detection timing and / or the second detection timing.

6. The method according to any one of claims 1-5, characterized in that, The first signal carries second information, which is used to instruct the first communication device to be woken up, and / or the second information is used to instruct the first communication device to perform sensing.

7. The method according to claim 6, characterized in that, The method of carrying the second information includes at least one of the following: The first signal is carried by frequency upsampling and / or frequency downsampling; The signal is carried by the first signal after signal processing, wherein the signal processing includes modulation of the first signal and linear frequency modulation spread spectrum, or the signal processing includes modulation of the first signal, linear frequency modulation spread spectrum and pseudo-noise PN spread spectrum.

8. The method according to any one of claims 1-7, characterized in that, The first signal is used for low-power wake-up.

9. A communication method, characterized in that, Applied to a second communication device, the method includes: Generate a first signal, wherein the first signal includes at least one of the following: a chirp signal, a linear frequency modulated (LFM) signal, an orthogonal time-frequency space (OTFS) signal, an on / off keying (OOK) signal, an orthogonal frequency division multiplexing (OFDM) signal, or an orthogonal frequency division multiplexing (DFT-S-OFDM) signal with discrete Fourier transform spread spectrum. Send the first signal, wherein the first signal is used for waking up and / or sensing the first communication device.

10. The method according to claim 9, characterized in that, Sending the first signal includes: The first signal is sent at the first detection time, wherein the first signal is used to wake up the first communication device; And / or, at a second detection timing, the first signal is transmitted, wherein the first signal is used for sensing by the first communication device.

11. The method according to claim 10, characterized in that, Sending the first signal at the first detection time includes: The first signal is transmitted on some or all instances of the first detection timing, wherein the first signal is also used for sensing by the first communication device.

12. The method according to claim 10, characterized in that, Sending the first signal at the second detection time includes: The first signal is sent on some or all instances of the second detection timing, wherein the first signal is also used to wake up the first communication device.

13. The method according to any one of claims 10-12, characterized in that, The method further includes: Obtain first information, wherein the first information is used to indicate the time-domain configuration of the first detection timing and / or the second detection timing.

14. The method according to any one of claims 9-13, characterized in that, The first signal carries second information, which is used to instruct the first communication device to be woken up, and / or the second information is used to instruct the first communication device to perform sensing.

15. The method according to claim 14, characterized in that, The method of carrying the second information includes any one of the following: The first signal is carried by frequency upsampling and / or frequency downsampling; The signal is carried by the first signal after signal processing, wherein the signal processing includes modulation of the first signal and linear frequency modulation spread spectrum, or the signal processing includes modulation of the first signal, linear frequency modulation spread spectrum and pseudo-noise PN spread spectrum.

16. The method according to any one of claims 9-15, characterized in that, The first signal is used for low-power wake-up of the first communication device.

17. A communication device, characterized in that, The communication device includes a unit for implementing the communication method as described in any one of claims 1 to 8 or claims 9 to 16.

18. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed, implements the communication method as described in any one of claims 1 to 8, or the communication method as described in any one of claims 9 to 16.

19. A chip system, characterized in that, Including the processor; The processor is configured to execute computer execution instructions to cause a device equipped with the chip system to perform the communication method as described in any one of claims 1 to 8, or the communication method as described in any one of claims 9 to 16.

20. The chip system according to claim 19, characterized in that, The chip system also includes an interface circuit, which is used to receive computer execution instructions and transmit them to the processor.

21. A computer program product, characterized in that, The computer program product is executed by a computer using the communication method according to any one of claims 1 to 8, or the communication method according to any one of claims 9 to 16.

22. A communication device, characterized in that, It includes at least one processor for executing a computer program stored in a memory to cause the communication device to perform the communication method as described in any one of claims 1 to 8, or the communication method as described in any one of claims 9 to 16.

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