Low-complexity and low-power-consumption awakening method, device and system for electronic equipment

Abstract

Provided are a system and method for configuring, transmitting, and receiving a new Wake-up Signal, WUS, thereby enabling RF domain detection with low complexity and low power consumption while maintaining a good level of detection performance, and a method for configuring, transmitting, and receiving a new Wake-up Signal, WUS, thereby enabling RF domain detection with low complexity and low power consumption. With the provided systems and methods, a WUS is transmitted over a wireless communication channel to a target receiver or group of target receivers according to configuration parameters including at least one of a start time, a start frequency, or a chirp rate. At least one of the configuration parameters is associated with an identification of the target receiver or the group of target receivers.

Description

Technical Field

[0001] The present application relates generally to wireless communications and, more particularly, to the generation, transmission, and reception of wake-up signals. Background Art

[0002] In a wireless system, when a node such as a user equipment (UE) has no data to receive from other nodes or data to send to other nodes, the node can switch to an idle or inactive mode or other power saving mode to reduce power consumption. But after the switch, the node may need to wake up and perform some specific procedures. The process by which a node is woken up is called a wake-up (WU) process. The paging process is an example of an application that requires such a WU process. When data arrives at a base station (BS) to be sent to a UE in an inactive or idle mode, the BS must wake up the UE before sending the data to the UE. In the latest 3GPP standard version, the paging process includes the BS first sending a WU signal (WUS) in the form of a Zadoff-Chu (ZC) sequence of length 131 to the UE. If the UE detects the sequence, it turns on its digital baseband processor to check the physical downlink control channel (PDCCH). Otherwise, the UE will remain in a dormant state. An important consequence of enabling ZC-based WUS detection prior to PDCCH monitoring is that the UE should be equipped with a low-complexity receiver for WUS detection. Evaluations have shown that in order to achieve good detection performance with this scheme and specifically WUS, WUS detection should be performed in the digital domain. However, this requirement to operate in the digital baseband comes with a power consumption penalty. In addition, the WUS detection performance is very sensitive to penalties such as sampling time and frequency offsets and synchronization errors. Summary of the invention

[0003] Systems, apparatus and methods for configuring, sending and receiving a novel chirp-based wake-up signal (WUS) are provided to achieve low complexity, low power consumption RF domain detection while maintaining a good level of detection performance. Using the provided system and method, the WUS is sent to a target receiver or a target receiver group on a wireless communication channel based on configuration parameters including at least one of a start time, a start frequency or a chirp rate. At least one of the configuration parameters is associated with an identity of the target receiver or the target receiver group.

[0004] The WUS can be used in various nodes or links in a communication system, such as a node in an integrated access and backhaul (IAB) system, a node in a mesh network, or a side link in a system. The WUS supports RF domain detection, or detection almost entirely in the RF domain with minimal digital processing. Therefore, compared with traditional methods, WUS detection can be completed with lower power consumption and complexity while maintaining a good level of detection performance.

[0005] According to one aspect of the present invention, a method is provided. The method includes sending a wake-up signal configuration parameter to a target receiver or a target receiver group. The configuration parameter includes at least one of a start time, a start frequency, or a chirp rate. At least one of the configuration parameters is associated with an identifier of the target receiver or the target receiver group. The method also includes sending a wake-up signal on a wireless communication channel according to the configuration parameter.

[0006] In some embodiments, the chirp rate is universal among the target UE or target UE group, and the start time and the start frequency are associated with the identifier of the target receiver or the target receiver group; or, the start frequency is universal among the target UE or the target UE group, and the start time and the chirp rate are associated with the identifier of the target receiver or the target receiver group; or, the start time is universal among the target UE or the target UE group, and the start frequency and the chirp rate are associated with the identifier of the target receiver or the target receiver group; or, the start frequency and the start time are universal among the target UE or the target UE group, and the chirp rate is associated with the identifier of the target receiver or the target receiver group. The start time and the chirp rate are common among the target UE or the target UE group, and the start time is associated with the identifier of the target receiver or the target receiver group; or the start time and the chirp rate are common among the target UE or the target UE group, and the start frequency is associated with the identifier of the target receiver or the target receiver group; or the start time, the start frequency and the chirp rate are associated with the identifier of the target receiver or the target receiver group; or at least one of the start time, the start frequency or the chirp rate is associated with the identifier of the target receiver or the target receiver group.

[0007] In some embodiments, the method further includes: sending the wake-up signal as part of a paging process; or sending the wake-up signal as part of a process requesting a sensing operation; or sending the wake-up signal as part of a paging process requesting a measurement; or sending the wake-up signal as part of a specific non-periodic process.

[0008] In some embodiments, sending the wake-up signal includes: sending the wake-up signal by the network device so as to be received by a target receiver as a user equipment (UE) or a target receiver group as a UE group; or, sending the wake-up signal includes: sending the wake-up signal by the user device so as to be received by a target receiver as another UE or a target receiver group as a UE group; or, sending the wake-up signal includes: sending the wake-up signal by the network device so as to be received by another network device.

[0009] In some embodiments, the chirp is transmitted starting from the start time and ending after a transmission window period, wherein the transmission window period is based on the location of the target receiver or the location of the target receiver group.

[0010] In some embodiments, chirp rates are associated with target receivers or target receiver groups according to priority, wherein a chirp rate with better performance is assigned to a target receiver or target receiver group with a higher priority.

[0011] In some embodiments, the chirp rate and / or duration of the first chirp is selected according to the capabilities of the target receiver or target receiver group.

[0012] In some embodiments, sending the wake-up signal over the wireless communication channel comprises sending a plurality of chirps including the first chirp.

[0013] In some embodiments, each of the plurality of chirps has the same chirp rate for a given target receiver or target receiver group; or the plurality of chirps each has a plurality of different chirp rates.

[0014] In some embodiments, sending the wake-up signal configuration parameters comprises sending the wake-up signal configuration parameters for the plurality of chirps.

[0015] In some embodiments, the chirp rate and / or chirp duration of the plurality of chirps is selected according to the capabilities of the target receiver or target receiver group.

[0016] In some embodiments, the method further comprises: sending at least one parameter configuring a decision rule for processing the chirp.

[0017] In some embodiments, the method further comprises: receiving an indication of detecting the wake-up signal from the target receiver or one or more target receivers in the target receiver group.

[0018] According to another aspect of the present invention, a method is provided. The method includes receiving a wake-up signal configuration parameter for a target receiver or a target receiver group. The configuration parameter includes at least one of a start time, a start frequency, or a chirp rate. At least one of the configuration parameters is associated with an identifier of the target receiver or the target receiver group. The method also includes receiving a wake-up signal on a wireless communication channel according to the configuration parameter.

[0019] In some embodiments, the chirp rate is universal among the target UE or target UE group, and the start time and the start frequency are associated with the identifier of the target receiver or the target receiver group; or, the start frequency is universal among the target UE or the target UE group, and the start time and the chirp rate are associated with the identifier of the target receiver or the target receiver group; or, the start time is universal among the target UE or the target UE group, and the start frequency and the chirp rate are associated with the identifier of the target receiver or the target receiver group; or, the start frequency and the start time are universal among the target UE or the target UE group, and the chirp rate is associated with the identifier of the target receiver or the target receiver group. The start time and the chirp rate are common among the target UE or the target UE group, and the start time is associated with the identifier of the target receiver or the target receiver group; or the start time and the chirp rate are common among the target UE or the target UE group, and the start frequency is associated with the identifier of the target receiver or the target receiver group; or the start time, the start frequency and the chirp rate are associated with the identifier of the target receiver or the target receiver group; or at least one of the start time, the start frequency or the chirp rate is associated with the identifier of the target receiver or the target receiver group.

[0020] In some embodiments, the method includes: receiving the wake-up signal as part of a paging process; or receiving the wake-up signal as part of a process requesting a sensing operation; or receiving the wake-up signal as part of a paging process requesting a measurement; or receiving the wake-up signal as part of a specific non-periodic process.

[0021] In some embodiments, receiving the wake-up signal includes: receiving the wake-up signal by the network device so as to be received by a target receiver as a user equipment (UE) or a target receiver group as a UE group; or, receiving the wake-up signal includes: receiving the wake-up signal by the user device so as to be received by a target receiver as another UE or a target receiver group as a UE group; or, receiving the wake-up signal includes: receiving the wake-up signal by the network device so as to be received by another network device.

[0022] In some embodiments, the chirp is transmitted starting from the start time and ending after a transmission window period, wherein the transmission window period is based on the location of the target receiver or the location of the target receiver group.

[0023] In some embodiments, chirp rates are associated with target receivers or target receiver groups according to priority, wherein a chirp rate with better performance is assigned to a target receiver or target receiver group with a higher priority.

[0024] In some embodiments, the chirp rate and / or transmission window period of the first chirp is selected according to the capabilities of the target receiver or target receiver group.

[0025] In some embodiments, receiving the wake-up signal over the wireless communication channel comprises receiving a plurality of chirps including the first chirp.

[0026] In some embodiments, each of the plurality of chirps has the same chirp rate for a given target receiver or target receiver group; or the plurality of chirps each has a plurality of different chirp rates.

[0027] In some embodiments, receiving wake-up signal configuration parameters comprises receiving wake-up signal configuration parameters for the plurality of chirps.

[0028] In some embodiments, the chirp rates and / or transmission window periods of the plurality of chirps are selected according to capabilities of the target receiver or target receiver group.

[0029] In some embodiments, the method further comprises receiving at least one parameter configuring a decision rule for processing the chirp.

[0030] In some embodiments, the method further comprises: sending an indication of detecting the wake-up signal.

[0031] In some embodiments, the method further comprises: performing detection to determine whether the chirp signal is directed to a specific receiver; and waking up other circuits in the receiver after determining that the chirp signal is directed to the specific receiver.

[0032] According to another aspect of the present invention, there is provided a device comprising a processor, wherein the processor is configured to cause the device to execute the method described herein.

[0033] According to another aspect of the present invention, there is provided a computer-readable storage medium comprising instructions, which, when executed by a computer, cause the computer to perform the method described herein.

[0034] According to another aspect of the present invention, there is provided a computer program product comprising instructions, which, when the program is executed by a computer, cause the computer to perform the method described herein.

[0035] According to another aspect of the present invention, a processor of a device is provided, wherein the processor is configured to cause the device to execute the method described herein.

[0036] According to another aspect of the present invention, a system comprising a network device and a wireless device is provided. The network device is used to send a wake-up signal. The wake-up signal is based on a configuration parameter including at least one of a start time, a start frequency or a chirp rate. The configuration parameter is associated with an identifier of a target receiver or a target receiver group. The wireless device is used as the target receiver or a receiver in the target receiver group. The wireless device is also used to receive the wake-up signal on the wireless communication channel according to the configuration parameter. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Embodiments of the present invention will now be described with reference to the accompanying drawings, in which:

[0038] Figure 1 is a block diagram of a communication system;

[0039] Figure 2 is a block diagram of a communication system;

[0040] Figure 3 A block diagram of a communication system showing the basic component structure of an electronic device (ED) and a base station;

[0041] Figure 4 A block diagram of a module that can be used to implement or execute one or more steps of an embodiment of the present application;

[0042] Figure 5 is a flow chart of the WUS transmission method;

[0043] Figure 6 is a flow chart of the WUS receiving method;

[0044] Figure 7 is an example of time-frequency resource and chirp rate mapping for WUS transmission;

[0045] Fig. 8A and 8B Other examples of time-frequency resource and chirp rate mapping for WUS transmission;

[0046] Fig. 9 An example of a chirp-based WUS configuration based on UE location is shown;

[0047] Fig.10An example of a chirp-based WUS configuration based on UE capabilities is shown;

[0048] Fig.11 An example of a chirp signal configuration for UEi is shown;

[0049] Fig.12 is a block diagram of a system for transmitting and receiving a chirp-based WUS, wherein a single chirp is transmitted to wake up a UE;

[0050] Fig.13 is a block diagram of a system for transmitting and receiving chirp-based WUS, wherein multiple chirps are transmitted to wake up a UE. DETAILED DESCRIPTION

[0051] Systems, devices and methods for configuring, sending and receiving a new chirp-based WUS are provided to achieve low complexity, low power consumption RF domain detection while maintaining a good level of detection performance. In the following description, detailed embodiments are presented in the context of UE wake-up, for example, as part of a paging process. However, the application of the chirp-based WUS is not limited to the paging process. Another example is to wake up the UE to perform a process such as sensing, or to perform some specific non-periodic measurements. The scope of application of the provided WUS is not limited to the UE. The wake-up signaling can be used for other nodes, even for links. For example, the provided WUS can be used to wake up the BS in an integrated access and backhaul (IAB) system to perform certain specific processes to wake up nodes in a mesh network, or to wake up a side link in the system.

[0052] The provided chirp-based WUS can achieve RF domain detection without performance loss. Therefore, the UE can detect WUS in the RF domain (or almost entirely in the RF domain with minimal digital processing) with low power consumption and low complexity while maintaining a good detection performance level.

[0053] refer to Figure 1, a simplified schematic diagram of a communication system is provided as an illustrative example and not a limitation. The communication system 100 includes a radio access network 120. The radio access network 120 may be a next generation (e.g., sixth generation (6G) or higher) radio access network or a traditional (e.g., 5G, 4G, 3G or 2G) radio access network. In the radio access network 120, one or more communication electronic devices (electric devices, ED) 110a to 110j (generally referred to as 110) may be interconnected with each other or connected to one or more network nodes (170a, 170b, generally referred to as 170). The core network 130 may be part of the communication system and may be dependent on or independent of the radio access technology used in the communication system 100. In addition, the communication system 100 includes a public switched telephone network (PSTN) 140, the Internet 150, and other networks 160.

[0054] Figure 2 An exemplary communication system 100 is shown. Typically, the communication system 100 enables multiple wireless or wired elements to transmit data and other content. The communication system 100 can be used to provide content such as voice, data, video and / or text through broadcast, multicast and unicast, etc. The communication system 100 can operate by sharing resources such as carrier spectrum bandwidth between its constituent elements. The communication system 100 may include a terrestrial communication system and / or a non-terrestrial communication system. The communication system 100 can provide a wide range of communication services and applications (such as earth monitoring, remote sensing, passive sensing and positioning, navigation and tracking, autonomous delivery and mobility, etc.). The communication system 100 can provide high availability and robustness through the joint operation of a terrestrial communication system and a non-terrestrial communication system. For example, integrating a non-terrestrial communication system (or its components) into a terrestrial communication system can produce a heterogeneous network including multiple layers. Compared with traditional communication networks, heterogeneous networks can achieve better overall performance through efficient multi-link joint operation, more flexible function sharing, and faster physical layer link switching between terrestrial networks and non-terrestrial networks.

[0055] The terrestrial communication system and the non-terrestrial communication system can be considered as subsystems of the communication system. In the example shown, the communication system 100 includes electronic devices (EDs) 110a to 110d (generally referred to as ED 110), radio access networks (RAN) 120a and 120b, non-terrestrial communication networks 120c, core networks 130, public switched telephone networks (PSTN) 140, Internet 150 and other networks 160. RAN 120a and 120b include corresponding base stations (BS) 170a and 170b, which can be generally referred to as terrestrial transmission and reception points (T-TRP) 170a and 170b. The non-terrestrial communication network 120c includes an access node, which can be generally referred to as a non-terrestrial transmission and reception point (NT-TRP) 172.

[0056] Alternatively or in addition, any ED 110 may be used to connect, access or communicate with any other T-TRP 170a and 170b, NT-TRP 172, Internet 150, core network 130, PSTN 140, other network 160, or any combination thereof. In some examples, ED 110a may communicate with T-TRP 170a for uplink and / or downlink transmissions via interface 190a. In some examples, ED 110a, 110b, and 110d may also communicate directly with each other via one or more sidelink air interfaces 190b. In some examples, ED 110d may communicate with NT-TRP 172 for uplink and / or downlink transmissions via interface 190c.

[0057] The air interfaces 190a and 190b may use similar communication technologies, such as any suitable wireless access technology. For example, the communication system 100 may implement one or more channel access methods in the air interfaces 190a and 190b, such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal FDMA (OFDMA), or single-carrier FDMA (SC-FDMA). The air interfaces 190a and 190b may utilize other high-dimensional signal spaces, which may include a combination of orthogonal dimensions and / or non-orthogonal dimensions.

[0058] The air interface 190c may enable communication between the ED 110d and one or more NT-TRPs 172 via a wireless link or simply, via a link. For some examples, the link is a dedicated connection for unicast transmissions, a connection for broadcast transmissions, or a connection between a group of EDs and one or more NT-TRPs for multicast transmissions.

[0059] The RANs 120a and 120b communicate with the core network 130 to provide various services, such as voice, data, and other services, to the EDs 110a, 110b, and 110c. The RANs 120a and 120b and / or the core network 130 may communicate directly or indirectly with one or more other RANs (not shown), which may (or may not) be directly served by the core network 130 and may (or may not) use the same radio access technology as the RANs 120a and / or RANs 120b. The core network 130 may also serve as a gateway access between (i) the RANs 120a and 120b and / or the EDs 110a, 110b, and 110c and (ii) other networks, such as the PSTN 140, the Internet 150, and other networks 160. In addition, some or all of the EDs 110a, 110b, and 110c may include functionality for communicating with different wireless networks over different radio links using different radio technologies and / or protocols. Instead of (or in addition to) wireless communications, EDs 110a, 110b, and 110c may communicate with a service provider or switch (not shown) and with the Internet 150 via a wired communication channel. PSTN 140 may include a circuit-switched telephone network for providing plain old telephone service (POTS). Internet 150 may include computer networks and / or subnets (intranets), and may include protocols such as the Internet Protocol (IP), the Transmission Control Protocol (TCP), and the User Datagram Protocol (UDP). EDs 110a, 110b, and 110c may be multi-mode devices capable of operating in accordance with a variety of wireless access technologies, and may also include a plurality of transceivers required to support these technologies.

[0060] Figure 3Another example of ED 110 and base stations 170a and / or 170b is shown. ED 110 is used to connect people, objects, machines, etc. ED 110 can be widely used in various scenarios, such as cellular communication, device-to-device (D2D), vehicle to everything (V2X), peer-to-peer (P2P), machine-to-machine (M2M), machine-type communication (MTC), Internet of Things (IOT), virtual reality (VR), augmented reality (AR), industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wearable devices, smart transportation, smart city, drones, robots, remote sensing, passive sensing, positioning, navigation and tracking, autonomous delivery and mobility, etc.

[0061] Each ED 110 represents any end-user device suitable for wireless operation, which may include the following devices (or may be referred to as): user equipment / device (UE), wireless transmit / receive unit (WTRU), mobile station, fixed or mobile user unit, cellular phone, station (STA), machine type communication (MTC) equipment, personal digital assistant (PDA), smartphone, laptop, computer, tablet, wireless sensor, consumer electronic device, smart book, vehicle, car, truck, bus, train or IoT device, industrial equipment or devices in the aforementioned devices (e.g., communication module, modem or chip), etc. The next generation ED 110 may be referred to using other terms. Base stations 170a and 170b are T-TRPs, hereinafter referred to as T-TRP 170. Similarly in Figure 3 The NT-TRP shown in will be referred to as NT-TRP 172 below. Each ED 110 connected to T-TRP 170 and / or NT-TRP 172 can be dynamically or semi-statically opened (i.e., established, activated or enabled), closed (i.e., released, deactivated or disabled) and / or configured in response to one of more of connection availability and connection necessity.

[0062] ED 110 includes a transmitter 201 and a receiver 203 coupled to one or more antennas 204. Only one antenna 204 is shown in the figure. Alternatively, one, some or all of the antennas can be panels. Transmitter 201 and receiver 203 can be integrated into, for example, a transceiver. The transceiver is used to modulate data or other content so that it can be sent through at least one antenna 204 or a network interface controller (NIC). The transceiver is also used to demodulate data or other content received by at least one antenna 204. Each transceiver includes any suitable structure to generate signals for wireless or wired transmission and / or process signals received by wireless or wired means. Each antenna 204 includes any suitable structure to send and / or receive wireless or wired signals.

[0063] ED 110 includes at least one memory 208. The memory 208 stores instructions and data used, generated, or collected by ED 110. For example, the memory 208 may store software instructions or modules for implementing some or all of the functions and / or embodiments described herein and executed by the processing unit 210. Each memory 208 includes any suitable volatile and / or non-volatile storage and retrieval device. Any suitable type of memory may be used, such as a random access memory (RAM), a read only memory (ROM), a hard disk, an optical disk, a subscriber identity module (SIM) card, a memory stick, a secure digital (SD) memory card, a processor cache, etc.

[0064] ED 110 may also include one or more input / output devices (not shown) or interfaces (e.g., connected to Figure 1 The input / output devices support interaction with a user or other devices in the network. Each input / output device includes any suitable structure for providing information to a user or receiving information from a user, such as a speaker, a microphone, a keypad, a keyboard, a display or a touch screen, including network interface communications.

[0065] ED 110 also includes a processor 210 for performing operations, including operations related to preparing transmissions for uplink transmission to NT-TRP 172 and / or T-TRP 170, processing downlink transmissions received from NT-TRP 172 and / or T-TRP 170, and processing sidelink transmissions to and from another ED 110. Processing operations related to preparing transmissions for uplink transmissions may include operations such as encoding, modulation, transmit beamforming, and generating symbols for transmission. Processing operations related to processing downlink transmissions may include operations such as receive beamforming, demodulation, and decoding received symbols. According to an embodiment, the downlink transmission may be received by receiver 203, possibly using receive beamforming, and processor 210 may extract signaling from the downlink transmission (e.g., by detecting and / or decoding the signaling). An example of signaling may be a reference signal sent by NT-TRP 172 and / or T-TRP 170. In some embodiments, the processor 210 implements transmit beamforming and / or receive beamforming according to a beam direction indication, such as beam angle information (BAI), received from the T-TRP 170. In some embodiments, the processor 210 may perform operations related to network access (e.g., initial access) and / or downlink synchronization, such as operations related to detecting a synchronization sequence, decoding, and obtaining system information. In some embodiments, the processor 210 may perform channel estimation, for example, using a reference signal received from the NT-TRP 172 and / or the T-TRP 170.

[0066] Although not shown, the processor 210 may form part of the transmitter 201 and / or the receiver 203. Although not shown, the memory 208 may form part of the processor 210.

[0067] The processor 210 and the processing components of the transmitter 201 and the receiver 203 may each be implemented by one or more processors that are the same or different and are used to execute instructions stored in a memory (e.g., the memory 208). Alternatively, the processor 210 and some or all of the processing components of the transmitter 201 and the receiver 203 may be implemented using a programmed field-programmable gate array (FPGA), a graphical processing unit (GPU), or an application-specific integrated circuit (ASIC).

[0068] In some implementations, T-TRP 170 may have other names, such as base station, base transceiver station (BTS), wireless base station, network node, network device, network side device, transmission / reception node, NodeB, evolved NodeB (eNodeB or eNB), home eNodeB, next generation NodeB (gNB), transmission point (TP), site controller, access point (AP), wireless router, relay station, remote radio head, ground node, ground network device, ground base station, base band unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), centralized unit (CU), distributed unit (DU), positioning node, etc. T-TRP 170 can be a macro BS, a micro BS, a relay node, a host node, etc., or a combination thereof. T-TRP 170 may refer to the above-mentioned device, or refer to a device in the above-mentioned device (eg, a communication module, a modem, or a chip).

[0069] In some embodiments, various parts of T-TRP 170 may be distributed. For example, some modules of T-TRP 170 may be located away from the device that houses the antenna of T-TRP 170, and may be coupled to the device that houses the antenna through a communication link (not shown) sometimes called a fronthaul, such as a common public radio interface (CPRI). Therefore, in some embodiments, the term T-TRP 170 may also refer to modules on the network side that perform processing operations such as determining the location of ED 110, resource allocation (scheduling), message generation, and encoding / decoding, which are not necessarily part of the device that houses the antenna of T-TRP 170. These modules may also be coupled to other T-TRPs. In some embodiments, T-TRP 170 may actually be multiple T-TRPs that operate together to serve ED 110 through coordinated multi-point transmission and the like.

[0070] The T-TRP 170 includes at least one transmitter 252 and at least one receiver 254 coupled to one or more antennas 256. Only one antenna 256 is shown in the figure. Alternatively, one, some or all of the antennas may be panels. The transmitter 252 and the receiver 254 may be integrated into a transceiver. The T-TRP 170 also includes a processor 260 for performing operations, including operations related to preparing transmissions for downlink transmission to the ED 110, processing uplink transmissions received from the ED 110, preparing transmissions for backhaul to the NT-TRP 172, and processing transmissions received from the NT-TRP 172 via backhaul. Processing operations related to preparing transmissions for downlink transmission or backhaul may include operations such as encoding, modulation, precoding (e.g., MIMO precoding), transmit beamforming, and generating symbols for transmission. Processing operations related to processing transmissions received in uplink or backhaul may include operations such as receive beamforming, demodulation, and decoding received symbols. The processor 260 may also perform operations related to network access (e.g., initial access) and / or downlink synchronization, such as generating the content of a synchronization signal block (SSB), generating system information, etc. In some embodiments, the processor 260 also generates a beam direction indication, such as a BAI, that the scheduler 253 may schedule for transmission. The processor 260 may perform other network-side processing operations described herein, such as determining the location of the ED 110, determining the location of the NT-TRP 172, etc. In some embodiments, the processor 260 may generate signaling, such as to configure one or more parameters of the ED 110 and / or one or more parameters of the NT-TRP 172. Any signaling generated by the processor 260 is sent by the transmitter 252. Note that the "signaling" used here may also be referred to as control signaling. Dynamic signaling may be sent in a control channel such as a physical downlink control channel (PDCCH), and static or semi-static high-layer signaling may be included in a data packet, which is sent in a data channel such as a physical downlink shared channel (PDSCH).

[0071] The scheduler 253 may be coupled to the processor 260. The scheduler 253 may be included within or operate separately from the T-TRP 170, which may schedule uplink transmissions, downlink transmissions, and / or backhauls, including issuing scheduling grants and / or configuring scheduling-free (“configured grants”) resources. The T-TRP 170 also includes a memory 258 for storing information and data. The memory 258 stores instructions and data used, generated, or collected by the T-TRP 170. For example, the memory 258 may store software instructions or modules for implementing some or all of the functionality and / or embodiments described herein and executed by the processor 260.

[0072] Although not shown, the processor 260 may form a part of the transmitter 252 and / or the receiver 254. In addition, although not shown, the processor 260 may implement the scheduler 253. Although not shown, the memory 258 may form a part of the processor 260.

[0073] The processor 260, the scheduler 253, and the processing components of the transmitter 252 and the receiver 254 may be implemented by the same or different one or more processors, which are used to execute instructions stored in a memory such as the memory 258. Alternatively, some or all of the processing components of the processor 260, the scheduler 253, and the transmitter 252 and the receiver 254 may be implemented using a dedicated circuit such as an FPGA, a GPU, or an ASIC.

[0074] Although the NT-TRP 172 is shown as a drone by way of example only, the NT-TRP 172 may be implemented in any suitable non-ground form. In addition, in some implementations, the NT-TRP 172 may have other names, such as a non-ground node, a non-ground network device, or a non-ground base station. The NT-TRP 172 includes a transmitter 272 and a receiver 274 coupled to one or more antennas 280. Only one antenna 280 is shown in the figure. Alternatively, one, some or all of the antennas may be panels. The transmitter 272 and the receiver 274 may be integrated into a transceiver. The NT-TRP 172 also includes a processor 276 for performing operations, including operations related to preparing transmissions for downlink transmission to the ED 110, processing uplink transmissions received from the ED 110, preparing transmissions for backhaul to the T-TRP 170, and processing transmissions received from the T-TRP 170 via backhaul. Processing operations related to preparing transmissions for downlink transmission or backhaul may include operations such as encoding, modulation, precoding (e.g., MIMO precoding), transmit beamforming, and generating symbols for transmission. Processing operations related to processing received transmissions in uplink or backhaul may include operations such as receive beamforming, demodulation, and decoding of received symbols. In some embodiments, processor 276 implements transmit beamforming and / or receive beamforming based on beam direction information (e.g., BAI) received from T-TRP 170. In some embodiments, processor 276 may generate signaling, such as to configure one or more parameters of ED 110. In some embodiments, NT-TRP 172 implements physical layer processing but does not implement high-level functions, such as functions of the medium access control (MAC) layer or the radio link control (RLC) layer. This is only an example, and more generally, NT-TRP 172 may implement high-level functions in addition to physical layer processing.

[0075] The NT-TRP 172 also includes a memory 278 for storing information and data. Although not shown, the processor 276 may form part of the transmitter 272 and / or the receiver 274. Although not shown, the memory 278 may form part of the processor 276.

[0076] Processor 276 and the processing components of transmitter 272 and receiver 274 may be implemented by the same or different one or more processors, respectively, which are used to execute instructions stored in a memory such as memory 278. Alternatively, processor 276 and some or all of the processing components of transmitter 272 and receiver 274 may be implemented using a programmed FPGA, GPU or ASIC or other dedicated circuit. In some embodiments, NT-TRP 172 may actually be multiple NT-TRPs that operate together to serve ED 110 through coordinated multi-point transmission or the like.

[0077] The T-TRP 170, NT-TRP 172, and / or ED 110 may include other components, but these components have been omitted for clarity.

[0078] One or more steps of the exemplary methods provided herein may be performed according to Figure 4 The corresponding unit or module is executed. Figure 4 Units or modules in devices such as ED 110, T-TRP 170, or NT-TRP 172 are shown. For example, a signal can be sent by a sending unit or a sending module. A signal can be received by a receiving unit or a receiving module. A signal can be processed by a processing unit or a processing module. Other steps can be performed by an artificial intelligence (AI) module or a machine learning (ML) module. The corresponding units or modules can be implemented using hardware, one or more components or devices that execute software, or a combination thereof. For example, one or more units or modules can be programmed integrated circuits such as FPGAs, GPUs, or ASICs. It should be understood that if these modules are implemented, for example, by a processor using software execution, these modules can be retrieved by the processor in whole or in part as needed, retrieved individually or collectively for processing, retrieved in one or more instances, and these modules themselves may include instructions for further deployment and instantiation.

[0079] Other details about ED 110, T-TRP 170 and NT-TRP 172 are known to those skilled in the art. Therefore, these details are omitted here.

[0080] A new chirp-based WUS design is provided. A chirp is a signal whose frequency increases linearly with time, and its slope is called the chirp rate. Therefore, if the network wants to wake up the UE, the network (e.g., base station) sends one or more chirp signals in a dedicated time-frequency resource allocated to the UE or UE group. The UE also monitors its dedicated time-frequency resources to see if one or more chirps corresponding to the UE are sent. This operation can be done in the RF analog domain. If the UE detects its corresponding chirp signal, the UE wakes up, turns on its digital baseband processor, and follows the instructions sent through the control channel in the digital baseband domain.

[0081] Reference now Figure 5 , a flow chart for configuring and then sending a chirp-based WUS is shown. The method begins at block 500 by sending a wake-up signal configuration parameter to a target receiver or a target receiver group. In some embodiments, the configuration parameter includes at least one of a start time, a start frequency, or a chirp rate. In some embodiments, at least one configuration parameter is associated with an identifier of the target receiver or the target receiver group. The method continues at block 502 by sending a wake-up signal on a wireless communication channel based on the configuration parameter.

[0082] Reference now Figure 6 , a flow chart of a method for receiving a configuration and then receiving a chirp-based WUS is shown. The method begins at block 600 by receiving a wake-up signal configuration parameter for a target receiver or a target receiver group. In some embodiments, the configuration parameter includes at least one of a start time, a start frequency, or a chirp rate. In some embodiments, at least one configuration parameter is associated with an identifier of the target receiver or the target receiver group. The method continues at block 602 by receiving a wake-up signal on a wireless communication channel based on the configuration parameter.

[0083] Advantageously, in the receiver, the WUS can be processed primarily in the RF analog domain, which can result in lower power consumption compared to using a full-featured baseband processor. The generation and detection of the WUS can be achieved with low complexity. Detailed examples are provided below. In some embodiments, the WUS can be configured based on UE capabilities and / or location. Advantageously, high reliability can be achieved using the provided WUS, with low probability of WUS misdetection and false alarm. The provided method also has the potential to effectively multiplex many UEs, i.e., many UEs can be multiplexed with a small amount of time-frequency resources. Detailed examples are provided below.

[0084] In some embodiments, a UE-specific three-dimensional (3D) parameter configuration is used to map the UE ID or UE group ID in three dimensions including time, frequency, and chirp rate. Figure 7 An example of such a mapping is shown in . The time-frequency resource has a frequency dimension and a time dimension. Figure 7In the example of , there are two possible time units 500, 502 and three possible bandwidth units 506, 508, 510, resulting in a total of 6 possible different time-frequency resources. Another parameter is α, which is the chirp rate. In the example shown, for WUS, UE1, UE2, UE3 and UE4 are multiplexed in the time domain, frequency domain and chirp rate domain. Specifically, UE1 is mapped to time unit 500, bandwidth unit 510 and chirp rate α1. UE2 is mapped to time unit 500, bandwidth unit 510 and chirp rate α2. UE3 is mapped to time unit 502, bandwidth unit 506 and chirp rate α1. UE4 is mapped to time unit 502, bandwidth unit 506 and chirp rate α2. UEs mapped to the same time and bandwidth unit are isolated in the chirp rate domain. In this case, UE groups are assigned a given chirp rate, but different time-frequency resources. In Figure 7 In the example, there are two groups. Group 1 includes UE1 and UE3. Chirp rate α1 is assigned to this group. Group 2 includes UE2 and UE4, and the assigned chirp rate is α2. UE1 and UE2 (one in each group) are assigned the same time-frequency unit. Similarly, UE3 and UE4 are assigned the same time-frequency unit. Similarly, UEs can be grouped and each group can be assigned one or more time-frequency units. Within each group, the UEs are distributed across the chirp rate domain.

[0085] In some embodiments, the chirp rate is common among the target UE or target UE group, and the start time and start frequency are associated with the identity of the target receiver or target receiver group.

[0086] Fig. 8A An example is shown in , where a common chirp rate α is assigned to all UEs and the UEs are multiplexed only in the time-frequency domain. Thus, the chirp is the same for all UEs assigned the same time-frequency resources. For this case, the control signaling, and possibly the implementation complexity, is lower than in the general case (more than one chirp rate is available), and the chirp rate domain is not used for multiplexing UEs. Thus, for the same degree of false alarm wake-up, this mapping accommodates fewer UEs in the same time-frequency unit.

[0087] In some embodiments, the starting frequency is common among the target UEs or target UE groups, and the starting time and chirp rate are associated with the identity of the target receiver or target receiver group.

[0088] In some embodiments, the start time is common among the target UE or group of target UEs, and the start frequency and chirp rate are associated with an identity of the target receiver or group of target receivers.

[0089] In some embodiments, the starting frequency and starting time are common among the target UE or target UE group, and the chirp rate is associated with an identity of the target receiver or target receiver group.

[0090] Figure 8B An example is shown in , showing a group of UEs separated only in the chirp rate domain; all UEs are allocated the same time-frequency resources. This can provide a larger time-frequency resource for each UE, but the resource is reused for all UEs.

[0091] In some embodiments, the starting frequency and chirp rate are common among the target UE or target UE group, and the starting time is associated with an identity of the target receiver or target receiver group.

[0092] In some embodiments, the starting time and chirp rate are common among the target UE or target UE group, and the starting frequency is associated with an identity of the target receiver or target receiver group.

[0093] In some embodiments, the start time, start frequency, and chirp rate are associated with an identification of a target receiver or group of target receivers.

[0094] Note that the range selection of time units and bandwidth units can be selected and / or configured by the network. Some examples of time-frequency units are resource elements (RE), resource element groups (REG), resource blocks (RB), and resource block groups (RBG).

[0095] In some embodiments, the WUS configured and sent to a given UE may have a single chirp or multiple chirps per UE, and in the case of multiple chirps per UE, the chirp rate may be the same or different for each chirp per UE. This configuration lays a good foundation for multiplexing a large number of UEs in the chirp rate domain. In this embodiment, the mapping of UE to WUS resources can also be based on one or more chirp rates assigned to the UE. This can be additionally multiplexed in the chirp rate domain. In addition, having multiple chirps can help improve reliability by providing diversity in detection.

[0096] Detailed example mapping of WUS including a single chirp

[0097] set up is a set of UE IDs. The duration of a time unit is represented by δ t , the frequency width of the bandwidth unit is represented by δ f The time and bandwidth units can be chosen by the network. In this specific example, the chirp signal starting point in the time domain is a multiple of the time unit. Definition is the set of possible chirp signal starting points for the UE in the time domain, where, L t Is a collection The potential of The choice of depends on the network. Similarly, in this specific example, the chirp signal starting point in the frequency domain is a multiple of the bandwidth unit. Definition is the set of possible chirp signal starting points for the UE in the frequency domain, where L f Is a collection The potential of The choice of depends on the network. For this example, the transmission window period (the length of time for sending the chirp WUS) is the time unit δ t Assume represents the set of possible transmission windows of the UE, where L T Is a collection Finally, suppose Represents the set of all available chirp rates that can be assigned to a UE. The following mapping is defined:

[0098] 1)t i =F t (ID i ),

[0099] 2)f i =F f (ID i ),

[0100] 3) T i =F T (ID i ),

[0101] 4) α i =F α (ID i ),

[0102] Among them, ID i is the ID of UEi. The first two mappings provide the starting point of the chirp assigned to UEi in the time domain and frequency domain, denoted as t i and f i The third mapping gives the transmission window period of UEi, denoted as T i The last mapping provides the chirp rate assigned to UEi, denoted as α i These mappings take as input the ID of UEi and map the ID to the time-frequency resources and chirp rate for the chirp signal of UEi. Fig.11Examples of chirp signals for a UE or group of UEs are shown. Note that the defined mapping does not have to be one-to-one; the same parameters may be assigned to multiple UEs.

[0103] It should be noted that typically the transmission window and the measurement window may be different. The transmission window is associated with the transmitter (e.g., TRP) and the measurement window is associated with the receiver (e.g., UE). Although these two parameters can be the same, they do not have to be the same. For example, there may be a scenario with one TRP and two UEs. The TRP can send the WUS using the transmission window T, while UE1 and UE2 can use measurement windows L1 and L2, respectively. T, L1, and L2 can typically be different. Typically, the measurement window is a subset of the transmission window, which means that L1,L2≤T. In addition, L1 and L2 can potentially be optimized based on the UE location or other characteristics. Typically, one or both of the transmission window and the measurement window can be part of the WUS configuration.

[0104] Note that these mappings together implicitly provide the time-frequency resource units allocated to UEi. Specifically, if the starting point of the chirp in time and frequency, as well as the transmission window period and the chirp rate are known, the time-frequency resource units occupied by the resulting chirp can be determined. Conversely, if the time-frequency resources occupied by the chirp and the chirp rate are known, the starting point and transmission window period of the chirp are also uniquely determined. In summary, knowing the starting point, transmission window period and chirp rate of the chirp is equivalent to knowing the time-frequency resource units and chirp rate used by the chirp.

[0105] The mapping can be in the form of a lookup table or formula. These mapping relationships are functions of the UE ID or UE group ID. The parameters can be calculated by the network using a defined formula or lookup table and sent to the UE using a signal. For example, in this case, radio resource control (RRC) configuration signaling can be used to send configuration parameters to the UE. In some embodiments, the signaling is performed before the UE switches to a reduced power mode. Alternatively, the formula or lookup table is sent to the UE. The UE can then replace its ID (or group ID) in the formula to determine its WUS configuration, or can use the ID to look up the WUS configuration in a lookup table.

[0106] Given these mappings, if UEi is to be woken up, the following steps are performed at the BS:

[0107] 1) BS generates a chirp with a chirp rate α i The chirping.

[0108] 2) BS allocates to UE (by α i ,t i 、f i , and T iThe choice of implies that the chirp is sent in the time-frequency resources of the receiver.

[0109] 3) The UE receives the signal and determines whether a chirp is present. If a chirp is detected, the UE wakes up. This step can be performed in the analog RF domain (e.g., by matched filtering) to take advantage of low-complexity operation and low power consumption.

[0110] Down Fig.12 An exemplary system operation diagram using the provided single chirp based WU signaling is shown, where the WUS receiver has a possible option based on matched filtering. A transmitter 1100 (which can be a BS, but not necessarily a BS) and a receiver 1102 (assumed to be a receiver of UE i, but not necessarily so) are shown. A channel 1102 is also shown.

[0111] On the transmitting side, if UEi is to be woken up (the output of decision unit 1108 is 1), transmitter 1100 generates a chirp rate of α i If UEi is not to be woken up (the output of decision unit 1108 is 0), the chirp signal is not generated and sent.

[0112] On the receiving side, the receiver 1104 has a chirp rate of α i The chirp rate is matched to the matched filter 1110. The output of the matched filter 1110 is processed by the decision unit 1112 to generate a decision as to whether the chirp rate α has been transmitted. i If the chirp rate is α i The decision of the chirp (“yes” path box 1114) wakes up the UE as shown in 1116, otherwise (“no” path box 1114) the UE will remain asleep as shown in 1118. The input of the decision unit 1112 is the continuous time signal z i (t), whose output is binary (1 when the wake-up chirp signal is detected, otherwise 0). With respect to the decision unit 1112, in some embodiments, statistical hypothesis testing is used to map continuous inputs to discrete binary decisions. In a specific example, the decision under the hypothesis testing involves estimating the signal power (e.g., by a signal envelope detector) and comparing the signal power to a predefined threshold value p. i Compare. Note that this is a relatively low complexity operation. The threshold ρ i The probability of false detection and false alarm is determined, and the threshold can be set by the network for the UE. In addition, before the UE enters a low power mode (e.g., inactive or idle mode), the network can send the threshold to the UE using, for example, RRC configuration signaling. More generally, a complete set of configuration parameters sent and received via RRC signaling is shown at 1122.

[0113] In some embodiments, the decision unit 1112 includes an analog to digital converter (ADC) with a low sampling rate to first obtain the analog signal z i (t) samples, and then make decisions based on the samples. The low sampling rate ADC may be different or functionally different from the traditional ADC that is typically used for full-function baseband processing. Alternatively, the low sampling rate ADC may be the same ADC used for full-function baseband processing, but is simply configured with low power consumption and limited baseband processing functionality. Therefore, even in embodiments where the WU decision includes some digital baseband processing, the WU decision can still consume relatively less power than the traditional WU approach.

[0114] The matched filter can be implemented using RF-based processing, which reduces power consumption compared to using conventional baseband processing for WUS detection. In addition, WUS detection can be implemented using low-complexity operations that can be implemented using simple circuits without activating the entire baseband processor. In some embodiments, a separate (separate from the baseband processor) digital circuit is provided that processes the output of the RF-based processing and makes a WU decision.

[0115] Detailed example mapping of WUS including multiple chirps

[0116] In this detailed example, the WUS of the UE includes multiple chirp signals. Instead of sending a single chirp signal to UEi, N chirp signals are sent. i According to N i Detection of chirps, for example, if the UE can detect the N chirps transmitted i At least M of the chirps i This method provides diversity and can improve the reliability of the UE's decision on whether to wake up. In some embodiments, N can be selected for the UE based on the capability and / or location of the UEi. i and M i , thereby reducing the probability of false detection and false alarm. A detailed example is provided below. Note that in this case, up to N UEi can be assigned i chirp rates (one for each chirp), in general these chirp rates can be different. A special case is for all N i The chirps of UEi may use the same chirp rate. In addition, the chirps corresponding to UEi may be multiplexed only in time, only in frequency, or both in time and frequency domains. Therefore, in the general case, a set of parameters (i.e., time starting point, frequency starting point, transmission window period, and chirp rate) that may be defined for a single chirp case is defined for each chirp of UEi. Therefore, for each parameter, the corresponding mapping generates N i Let t i,j、f i,j , T i,j , and α i,j is the parameter corresponding to the j-th chirp of UEi.

[0117] Given these parameters, if UEi is to be woken up, the following steps are performed at the BS:

[0118] 1) BS generates N i chirp signals, where the slope of the jth chirp is α i,j .

[0119] 2) BS sends N to UEi in the time-frequency resources allocated to the chirp. i Each chirp in the chirp.

[0120] 3) The UE receives the signal and determines whether each chirp signal exists. If at least M i This step is preferably performed in the analog RF domain (e.g., by matched filtering) to take advantage of low-complexity operation and low power consumption.

[0121] A similar approach can be used for the case of a single chirp per UE. Fig.12 Those transmitter and receiver structures described. Fig.13 A system diagram is shown for the case where multiple chirp signals are used per UE. This system diagram shows an example receiver architecture for WUS detection based on matched filtering. The UE can have one matched filter per chirp or one or more tunable matched filters. The decision unit receives the output of the matched filter and makes a decision for each chirp to determine whether the chirp is present. In this example, the UE uses a threshold for each chirp. Define ρ i,j is the threshold of the jth chirp of UEi. When the chirp rate is different, the threshold may be different. UEi should know (e.g., through previous RRC signaling) N i 、M i , {ρ i,j} and the parameters of each chirp assigned to the UE.

[0122] This example involves using multiple chirps per UE, which can provide diversity and improve the WU detection performance of the UE. In addition, using multiple chirp signals per UE expands the dimensionality of the chirp rate domain. This in turn allows more UEs to be multiplexed in the chirp rate domain while using the same time-frequency resources.

[0123] Mapping based on location and / or priority

[0124] In some embodiments, the chirp configuration is based on the UE location. In some embodiments, the transmission window period of the UE is based on the location of the UE relative to the BS. When the UE is far from the BS, the signal to noise ratio (SNR) will decrease due to the large path loss, resulting in a decrease in WUS detection performance. A longer transmission window can be used to provide a processing gain that at least partially compensates for the large path loss of such UEs. Fig. 9 An example is shown where UE2 is further away from the BS than UE1. Therefore, the SNR of UE2 is lower, and UE2 can configure a longer transmission window than the transmission window of UE1 to improve detection performance. The transmission window period of the chirp-based WUS configuration can be determined using rough or precise knowledge of the UE location. In some embodiments, the location-based transmission window period is determined for other wake-up signals (including, for example, all-digital sequences, such as the ZC sequence currently proposed in the latest version of NR), where a longer sequence length can be used for UEs that are further away from the base station.

[0125] More generally, the transmission window period T can be adjusted / selected for UEi i . When a chirp signal is used, after a pulse compression operation (usually achieved by matched filtering) at the receiver, there is a processing gain as a function of BT, where B is the chirp bandwidth and T is the transmission window period. Therefore, the post-processing SNR is equal to the pre-processing SNR multiplied by BT. In order to compensate for the path loss effect of UEs far away from the BS, the transmission window period can be increased, thereby improving the detection performance. In this embodiment, the mapping maps the combination of UE ID and UE position to time-frequency resources and chirp rate. This method can be applied to the case of a single chirp per UE or multiple chirps per UE.

[0126] In some embodiments, the chirp rate is used to provide differentiated performance between different UEs, for example based on UE priority. The applicant has observed that the WUS detection performance, in terms of the probability of false detection and false alarm, depends on the chirp rate assigned to the UE. The chirp bandwidth is given by B=α×T, where B is the bandwidth, T is the transmission window period (duration of the chirp signal), and α is the chirp rate. With a fixed transmission window period, the larger the chirp rate, the larger the bandwidth and the better the performance. For the multi-chirp case, each chirp signal also has the same relationship, i.e., B=α×T, where T is the duration of each chirp signal and B is the bandwidth of the chirp signal.

[0127] Therefore, among the set of available chirp rates, some chirp rates perform better than others. This can be taken into account in the chirp rate mapping. The UEs can be sorted according to priority and the chirp rates with better performance can be assigned to the UEs with higher priority. For example, false detection may be very important for a particular UE. A chirp rate that performs better than other chirp rates can be assigned to that UE.

[0128] In some embodiments, the chirp rate may be configured between different UEs based on UE capabilities. Fig.10 An example is shown in FIG, which shows two UEs 1000, 1002 with different capabilities in terms of supported bandwidth. In this example, one UE 1002 may support a 200 MHz bandwidth, while the other UE 1000 may only support 20 MHz. A first chirp rate α1 suitable for a 200 MHz bandwidth is configured for the UE 1000. A second chirp rate α2 suitable for a 20 MHz bandwidth is configured for the UE 1002. If the supportable UE BW is larger, a larger chirp rate may be selected so that the bandwidth occupied by the chirp WUS is equal to the supportable UE BW. More generally, by tuning the chirp rate, the BW occupied by the chirp WUS may be tuned.

[0129] Numerous modifications and variations of the present invention are possible in light of the above teachings.It is therefore to be understood that within the scope of the appended claims, the present invention may be practiced otherwise than as specifically described herein.

Claims

1. A method comprising: Sending a wake-up signal configuration parameter to a target receiver or a target receiver group, wherein the configuration parameter includes at least one of a start time, a start frequency, or a chirp rate, and at least one of the configuration parameters is associated with an identifier of the target receiver or the target receiver group; A wake-up signal is sent on a wireless communication channel according to the configuration parameters.

2. The method according to claim 1, characterized in that: The chirp rate is common among target UEs or target UE groups, and the start time and start frequency are associated with the identifier of the target receiver or target receiver group; or The starting frequency is common among target UEs or target UE groups, and the starting time and chirp rate are associated with the identifier of the target receiver or target receiver group; or The start time is common among target UEs or target UE groups, and the start frequency and chirp rate are associated with the identifier of the target receiver or target receiver group; or The starting frequency and the starting time are common among target UEs or target UE groups, and the chirp rate is associated with the identifier of the target receiver or target receiver group; or The starting frequency and chirp rate are common between target UEs or target UE groups, and the starting time is associated with the identifier of the target receiver or target receiver group; or The start time and chirp rate are common between target UEs or target UE groups, and the start frequency is associated with the identifier of the target receiver or target receiver group; or The start time, start frequency and chirp rate are associated with the identification of the target receiver or target receiver group; or At least one of the start time, the start frequency or the chirp rate is associated with the identification of the target receiver or the target receiver group.

3. The method according to claim 1 or claim 2, further comprising: sending the wake-up signal as part of a paging procedure; or sending the wake-up signal as part of a process of requesting a sensing operation; or sending the wake-up signal as part of a paging procedure requesting measurements; or The wake-up signal is sent as part of a specific aperiodic process.

4. The method according to any one of claims 1 to 3, characterized in that: Sending the wake-up signal includes: sending the wake-up signal by the network device so as to be received by a target receiver as a user equipment UE or a target receiver group as a UE group; or The sending of the wake-up signal comprises: sending the wake-up signal by the user equipment so as to be received by a target receiver which is another UE or a target receiver group which is a UE group; or Sending the wake-up signal includes: sending the wake-up signal by the network device so as to be received by another network device.

5. The method according to any one of claims 1 to 4, characterized in that: The chirp is transmitted starting from the start time and ending after a transmission window period, wherein the transmission window period is based on the location of the target receiver or the location of the target receiver group.

6. The method according to any one of claims 1 to 5, characterized in that: The chirp rates are associated with target receivers or target receiver groups according to priorities, wherein a chirp rate with better performance is allocated to a target receiver or target receiver group with a higher priority.

7. The method according to any one of claims 1 to 6, characterized in that: The chirp rate and / or duration of the first chirp is selected according to the capabilities of the target receiver or target receiver group.

8. The method according to any one of claims 1 to 6, characterized in that: Sending the wake-up signal over the wireless communication channel includes sending a plurality of chirps including the first chirp.

9. The method according to claim 8, characterized in that: Each chirp of the plurality of chirps has the same chirp rate for a given target receiver or group of target receivers; or The plurality of chirps each have a plurality of different chirp rates.

10. The method according to claim 8, characterized in that Sending the wake-up signal configuration parameter includes sending the wake-up signal configuration parameter for the plurality of chirps.

11. The method according to claim 9 or claim 10, characterized in that: The chirp rates and / or chirp durations of the plurality of chirps are selected according to capabilities of the target receiver or target receiver group.

12. The method according to any one of claims 1 to 11, further comprising: At least one parameter configuring a decision rule for processing the chirp is transmitted.

13. The method according to any one of claims 1 to 12, further comprising: An indication of detecting the wake-up signal is received from the target receiver or one or more target receivers in the group of target receivers.

14. A method comprising: Receiving a wake-up signal configuration parameter for a target receiver or a target receiver group, wherein the configuration parameter comprises at least one of a start time, a start frequency, or a chirp rate, and at least one of the configuration parameters is associated with an identification of the target receiver or the target receiver group; A wake-up signal is received on a wireless communication channel according to the configuration parameters.

15. The method according to claim 14, characterized in that: The chirp rate is common among target UEs or target UE groups, and the start time and start frequency are associated with the identifier of the target receiver or target receiver group; or The starting frequency is common among target UEs or target UE groups, and the starting time and chirp rate are associated with the identifier of the target receiver or target receiver group; or The start time is common among target UEs or target UE groups, and the start frequency and chirp rate are associated with the identifier of the target receiver or target receiver group; or The starting frequency and the starting time are common among target UEs or target UE groups, and the chirp rate is associated with the identifier of the target receiver or target receiver group; or The starting frequency and chirp rate are common between target UEs or target UE groups, and the starting time is associated with the identifier of the target receiver or target receiver group; or The start time and chirp rate are common between target UEs or target UE groups, and the start frequency is associated with the identifier of the target receiver or target receiver group; or The start time, start frequency and chirp rate are associated with the identification of the target receiver or target receiver group; or At least one of the start time, the start frequency or the chirp rate is associated with the identification of the target receiver or the target receiver group.

16. The method according to claim 14 or claim 15, further comprising: receiving the wake-up signal as part of a paging procedure; or receiving the wake-up signal as part of a process requesting a sensing operation; or receiving the wake-up signal as part of a paging procedure requesting measurements; or The wake-up signal is received as part of a specific aperiodic process.

17. The method according to any one of claims 14 to 16, characterized in that: Receiving the wake-up signal includes: receiving the wake-up signal by the network device so as to be received by a target receiver as a user equipment UE or a target receiver group as a UE group; or Receiving the wake-up signal includes: receiving the wake-up signal by the user equipment so as to be received by a target receiver as another UE or a target receiver group as a UE group; or Receiving the wake-up signal includes receiving the wake-up signal by the network device so as to be received by another network device.

18. The method according to any one of claims 14 to 17, characterized in that The chirp is transmitted starting from the start time and ending after a transmission window period, wherein the transmission window period is based on the location of the target receiver or the location of the target receiver group.

19. The method according to any one of claims 14 to 18, characterized in that The chirp rates are associated with target receivers or target receiver groups according to priorities, wherein a chirp rate with better performance is allocated to a target receiver or target receiver group with a higher priority.

20. The method according to any one of claims 14 to 19, characterized in that The chirp rate and / or transmission window period of the first chirp is selected according to the capability of the target receiver or target receiver group.

21. The method according to any one of claims 14 to 19, characterized in that Receiving the wake-up signal over the wireless communication channel includes receiving a plurality of chirps including the first chirp.

22. The method according to claim 21, characterized in that: Each chirp of the plurality of chirps has the same chirp rate for a given target receiver or group of target receivers; or The plurality of chirps each have a plurality of different chirp rates.

23. The method according to claim 21, characterized in that Receiving wake-up signal configuration parameters includes receiving wake-up signal configuration parameters for the plurality of chirps.

24. The method according to any one of claims 22 to 23, characterized in that The chirp rates and / or transmission window periods of the plurality of chirps are selected according to capabilities of the target receiver or target receiver group.

25. The method according to any one of claims 14 to 24, further comprising: At least one parameter of a decision rule configured for processing the chirp is received.

26. The method according to any one of claims 14 to 25, further comprising: An indication of detecting the wake-up signal is sent.

27. The method according to any one of claims 14 to 26, further comprising: performing detection to determine whether the chirp signal is intended for a particular receiver; After determining that the chirp signal is intended for the specific receiver, other circuits in the receiver are awakened.

28. An apparatus comprising a processor for causing the apparatus to perform the method according to any one of claims 1 to 27.

29. A computer-readable storage medium comprising instructions which, when executed by a computer, cause the computer to perform the method according to any one of claims 1 to 27.

30. A computer program product comprising instructions which, when the program is executed by a computer, cause the computer to perform the method according to any one of claims 1 to 27.

31. A processor of a device, the processor being configured to cause the device to execute the method according to any one of claims 1 to 27.

32. A system comprising: A network device configured to send a wake-up signal, wherein the wake-up signal is based on a configuration parameter including at least one of a start time, a start frequency, or a chirp rate, the configuration parameter being associated with an identification of a target receiver or a target receiver group; A wireless device is used as the target receiver or one of the target receiver groups, and the wireless device is further used to receive the wake-up signal on the wireless communication channel according to the configuration parameters.

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