Wake-up signal receiving method and apparatus, device, medium, and program product

Abstract

The present application relates to the technical field of communications, and discloses a wake-up signal receiving method and apparatus, a device, a medium, and a program product. The method is executed by a terminal device. The terminal device comprises a first receiver and a second receiver. The power consumption of the first receiver is less than that of the second receiver. The method comprises: receiving a first wake-up signal by means of a first receiver, wherein the first wake-up signal is used for indicating first information and second information, the first information is associated with whether to wake up a second receiver, and the second information is associated with a cell corresponding to the first wake-up signal. In the method, the second information is associated with a cell corresponding to the first wake-up signal, so that the interference between different cells is reduced, and compared with an ordinary wake-up signal, the first wake-up signal has an expanded signal coverage range, thereby expanding the range of energy-saving benefits.

Description

Wake-up signal receiving method, device, equipment, medium and program product Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a method, apparatus, device, medium, and program product for receiving a wake-up signal. Background Art

[0002] A terminal device that uses a wake-up receiver to wake up a main receiver for data transmission saves more power than a terminal device in which the main receiver is always in an awake state.

[0003] In the related art, the waveform of the wake-up signal received by the wake-up receiver is a simple waveform, and the coverage range of the wake-up signal is small, resulting in a limited range of energy saving benefits.

[0004] Summary of the Invention

[0005] The present application provides a method, apparatus, device, medium, and program product for receiving a wake-up signal. The technical solution at least includes:

[0006] According to one aspect of an embodiment of the present application, a method for receiving a wake-up signal is provided. The method is performed by a terminal device, the terminal device including a first receiver and a second receiver, the power consumption of the first receiver being less than the power consumption of the second receiver, and the method including:

[0007] receiving a first wake-up signal via a first receiver;

[0008] The first wake-up signal is used to indicate first information and second information, the first information is associated with whether to wake up the second receiver, and the second information is associated with the cell corresponding to the first wake-up signal.

[0009] According to another aspect of an embodiment of the present application, a method for sending a wake-up signal is provided. The method is performed by a network device, and the method includes:

[0010] sending a first wake-up signal;

[0011] Among them, the first wake-up signal is used to indicate the first information and the second information, the first information is associated with whether to wake up the second receiver of the terminal device, the terminal device includes a first receiver and a second receiver, the power consumption of the first receiver is less than the power consumption of the second receiver, and the second information is associated with the cell corresponding to the first wake-up signal.

[0012] According to another aspect of an embodiment of the present application, a device for receiving a wake-up signal is provided, the device including a first receiver and a second receiver, wherein power consumption of the first receiver is less than power consumption of the second receiver, and the device includes:

[0013] A receiving module, configured to receive a first wake-up signal through a first receiver;

[0014] The first wake-up signal is used to indicate first information and second information, the first information is associated with whether to wake up the second receiver, and the second information is associated with the cell corresponding to the first wake-up signal.

[0015] According to another aspect of an embodiment of the present application, a device for sending a wake-up signal is provided, the device including:

[0016] A sending module, configured to send a first wake-up signal;

[0017] Among them, the first wake-up signal is used to indicate the first information and the second information, the first information is associated with whether to wake up the second receiver of the terminal device, the terminal device includes a first receiver and a second receiver, the power consumption of the first receiver is less than the power consumption of the second receiver, and the second information is associated with the cell corresponding to the first wake-up signal.

[0018] According to another aspect of an embodiment of the present application, a terminal device is provided, the terminal device including:

[0019] a processor; a transceiver connected to the processor; a memory for storing executable instructions of the processor;

[0020] The processor is configured to load and execute executable instructions to implement the wake-up signal receiving method as described in the above aspects.

[0021] According to another aspect of an embodiment of the present application, a network device is provided, the network device including:

[0022] a processor; a transceiver connected to the processor; a memory for storing executable instructions of the processor;

[0023] The processor is configured to load and execute executable instructions to implement the wake-up signal sending method as described in the above aspects.

[0024] According to another aspect of an embodiment of the present application, a computer-readable storage medium is provided, in which at least one program is stored. The at least one program is loaded and executed by a processor to implement a method for receiving a wake-up signal or a method for sending a wake-up signal as described in the above aspects.

[0025] According to another aspect of an embodiment of the present application, a chip is provided, which includes a programmable logic circuit and / or program instructions. When the chip runs on a terminal device or a network device, it is used to implement the wake-up signal receiving method or the wake-up signal sending method of the above-mentioned various aspects.

[0026] According to another aspect of an embodiment of the present application, a computer program product or computer program is provided, which includes computer instructions, the computer instructions are stored in a computer-readable storage medium, a processor obtains the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions to implement a method for receiving a wake-up signal or a method for sending a wake-up signal as described in the above aspects.

[0027] The technical solutions provided by the embodiments of the present application may have the following beneficial effects:

[0028] A first wake-up signal is received by a first receiver, wherein the first wake-up signal indicates first information and second information, the first information being associated with whether to wake up the second receiver, and the second information being associated with the cell corresponding to the first wake-up signal. Because the second information is associated with the cell corresponding to the first wake-up signal, interference between different cells is reduced. Furthermore, compared to ordinary wake-up signals, the first wake-up signal has a wider signal coverage range, thereby increasing the scope of energy savings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0030] FIG1 shows a schematic diagram of a discontinuous reception transmission mechanism provided by the related art;

[0031] FIG2 shows a schematic diagram of a receiver system provided by the related art;

[0032] FIG3 shows a schematic diagram of a communication system provided by an exemplary embodiment of the present application;

[0033] FIG4 shows a flowchart of a method for sending a wake-up signal provided by an exemplary embodiment of the present application;

[0034] FIG5 shows a schematic diagram of starting detection of a control channel provided by an exemplary embodiment of the present application;

[0035] FIG6 shows a schematic diagram of modulating a first wake-up signal provided by an exemplary embodiment of the present application;

[0036] FIG7 shows a schematic diagram of modulating a first wake-up signal provided by an exemplary embodiment of the present application;

[0037] FIG8 shows a flowchart of a method for receiving a wake-up signal provided by an exemplary embodiment of the present application;

[0038] FIG9 shows a schematic diagram of a communication scenario provided by an exemplary embodiment of the present application;

[0039] FIG10 shows a block diagram of a device for sending a wake-up signal provided by an exemplary embodiment of the present application;

[0040] FIG11 shows a block diagram of a device for receiving a wake-up signal provided by an exemplary embodiment of the present application;

[0041] FIG12 shows a schematic structural diagram of a terminal device or a network device provided by an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0042] To make the objectives, technical solutions, and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings. Exemplary embodiments will be described in detail herein, with examples shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are merely examples of devices and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0043] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0044] It should be understood that although the terms first, second, third, etc. may be used in this disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining."

[0045] The technical solutions described in some embodiments of the present application can be applicable to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced long term evolution (LTE-A) system, New Radio (NR) system, NR system evolution system, LTE on unlicensed spectrum (LTE-U) system, NR on unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity) system. Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system, cellular Internet of Things system, cellular passive Internet of Things system, and can also be applied to subsequent evolution systems of 5G NR system, and can also be applied to 6G and subsequent evolution systems.

[0046] It should be understood that in some embodiments of the present application, "5G" may also be referred to as "5G NR" or "NR".

[0047] It should be understood that in the description of the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and being indicated, configuration and being configured, etc.

[0048] In the embodiments of the present application, "predefined" can be implemented by pre-storing corresponding codes, tables, or other methods that can be used to indicate relevant information in a device (for example, a terminal device and a network device). The present application does not limit the specific implementation method. For example, predefined can refer to information defined in a protocol.

[0049] In the embodiments of the present application, "protocol" may refer to a standard protocol in the field of communications, for example, it may include an LTE protocol, a NR protocol, and related protocols used in future communication systems, and this application does not limit this.

[0050] Next, we will introduce Discontinuous Reception (DRX):

[0051] To save power on mobile devices, communication systems support the DRX mechanism, which uses a semi-static configuration to achieve discontinuous reception of signals in the time domain. When there is no data transmission, power consumption can be reduced by stopping reception of the Physical Downlink Control Channel (PDCCH).

[0052] To configure DRX, a terminal device in the Radio Resource Control (RRC) connected state (RRC_CONNECTED) configures a DRX cycle. Figure 1 shows a schematic diagram of the discontinuous reception transmission mechanism provided by related technologies. A DRX cycle consists of an active period (Active Time) and an inactive period (Inactive Time). During the active period, the terminal device monitors and receives the PDCCH; during the inactive period, the terminal device does not receive the PDCCH to reduce power consumption.

[0053] Next, the wake-up signal is introduced:

[0054] In related technologies, the DRX mechanism can be used in conjunction with a wake-up signal, and the terminal device receives an indication of the wake-up signal before the DRX on time (DRX ON duration). As shown in Figure 1, when the terminal device has data transmission within a DRX cycle, the wake-up signal wakes up the terminal device to detect the PDCCH during the DRX on time; when the terminal device has no data transmission within a DRX cycle, the wake-up signal does not wake up the terminal device, and the terminal device does not need to detect the PDCCH during the DRX on time. Compared with related DRX mechanisms, when the terminal device has no data transmission, the terminal device can omit the PDCCH detection during the DRX on time, thereby achieving energy saving. The time before the DRX on time of the terminal device can be called the inactive time, and the DRX on time of the terminal device can be called the active time. The DRX wake-up signal uses a waveform and structure similar to that of the PDCCH.

[0055] Next, the receiver system is introduced:

[0056] 2 shows a schematic diagram of a receiver system 200 provided by the related art. The receiver system 200 includes a wake-up receiver (WUR) 210 and a main radio 220.

[0057] In some embodiments, the primary receiver 220 can be equivalently understood as a primary transceiver, or a primary air interface communication unit.

[0058] To further save power, WUR is introduced to receive wake-up signals. The wake-up receiver is characterized by extremely low cost, extremely low complexity, and extremely low power consumption. It mainly receives the wake-up signal through a method based on envelope detection. In other methods, the use of similar traditional receiver methods is not ruled out. In short, the power consumption level of the wake-up receiver is several orders of magnitude lower than that of the traditional sleep mode. Generally speaking, the power consumption of traditional receivers is greater than 100 milliwatts, while low-power receivers can be less than 1 milliwatt.

[0059] Therefore, the wake-up signal (Wake Up Signal, WUS) received by the wake-up receiver is different from the modulation method, waveform, etc. of the signal carried by the physical downlink control channel (Physical Downlink Control CHannel, PDCCH) defined in the relevant standards. The wake-up signal can be an envelope signal modulated by amplitude shift keying (ASK) of the carrier signal. The demodulation of the envelope signal can also be completed by driving a low-power circuit with the energy provided by the wireless radio frequency signal, so it can be passive. The wake-up receiver can also be actively powered by the terminal device. Regardless of the power supply method, the receiver greatly reduces power consumption compared to traditional receivers. For example, WUR can achieve power consumption of less than 1 milliwatt, which is much lower than the power consumption of tens to hundreds of milliwatts of the main receiver. The wake-up receiver can be combined with the terminal device as an additional module of the terminal device's receiver, or it can be used alone as a wake-up function module of a terminal device.

[0060] As shown in Figure 1, in the initial state, wakeup receiver 210 is awake and main receiver 220 is off. Wakeup receiver 210 receives a wakeup signal and determines whether to wake up main receiver 220 based on the wakeup signal. If so, the network device can send a wakeup signal to wakeup receiver 210, which then wakes up main receiver 220 upon receiving the wakeup signal. Otherwise, main receiver 220 remains off.

[0061] In some embodiments, when the wake-up signal is sent, it is used to indicate wake-up; when the wake-up signal is not sent, it is used to indicate not wake-up.

[0062] In some embodiments, when a wake-up signal carrying a wake-up indication is sent, it is used to indicate wake-up; when a wake-up signal carrying a non-wake-up indication is sent, it is used to indicate non-wake-up.

[0063] The WUR can be activated by the WUS at any time and receive a wake-up signal. For example, the WUS signal uses on-off keying (OOK) modulation. The principle of OOK modulation is to modulate the amplitude of the carrier signal to non-zero values ​​(1) and zero values ​​(0), corresponding to On and Off, respectively, to represent information bits. OOK is also known as binary amplitude shift keying (2-ASK). For example, bit 1 is modulated to On and bit 0 is modulated to Off.

[0064] FIG3 shows a schematic diagram of a communication system 100 provided by an exemplary embodiment of the present application. The communication system 100 includes a terminal device 110 and a network device 120 .

[0065] The terminal device 110 in this application is also called UE, access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, and user equipment. The terminals include, but are not limited to, handheld devices, wearable devices, vehicle-mounted devices, and Internet of Things devices, such as mobile phones, tablet computers, e-book readers, laptop computers, desktop computers, televisions, game consoles, mobile Internet devices (MIDs), augmented reality (AR) terminals, virtual reality (VR) terminals, and mixed reality (MR) terminals, wearable devices, handles, electronic tags, controllers, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical care, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, wireless terminals in remote medical surgery, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loops (WLANs), and wireless terminals in industrial control. Loop (WLL) stations, personal digital assistants (PDA), TV set-top boxes (STB), customer premises equipment (CPE), etc.

[0066] The network device 120 in the present application provides wireless communication functions, and the network device 120 includes but is not limited to: an evolved node B (eNB), a radio network controller (RNC), a node B (NB), a base station controller (BSC), a base transceiver station (BTS), a home base station (e.g., a home evolved node B, or a home node B, HNB), a baseband unit (BBU), an access point (AP) in a Wi-Fi system, a wireless relay node, a wireless backhaul node, a transmission point (TP) or a transmission and reception point (TRP), etc. It can also be a next generation node B (gNB) or a transmission point (TRP or TP) in a 5G mobile communication system, or one or a group of antenna panels (including multiple antenna panels) of a base station in a 5G system, or a network node constituting a gNB or a transmission point, such as a baseband unit (BBU) or a distributed unit (DPU). The invention relates to a base station (DU) in a B5G mobile communication system or a 6G mobile communication system, or a core network (CN), fronthaul, backhaul, radio access network (RAN), network slicing, or a service cell, primary cell (PCell), primary secondary cell (PSCell), special cell (SpCell), secondary cell (SCell), and neighboring cell of a terminal device.

[0067] The terminal device 110 and the network device 120 communicate with each other via some air interface technology, such as a Uu interface.

[0068] Exemplarily, there are two communication scenarios between the terminal device 110 and the network device 120: uplink communication scenario and downlink communication scenario. Uplink communication refers to the terminal device 110 sending a signal to the network device 120; downlink communication refers to the network device 120 sending a signal to the terminal device 110.

[0069] The technical solutions provided in the embodiments of the present application can be applied to various communication systems, such as: GSM system, CDMA system, WCDMA system, GPRS, LTE system, LTE-A system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD) system, UMTS, Worldwide Interoperability for Microwave Access (WiMAX) communication system, 5G mobile communication system, NR system, NR system evolution system, LTE-U system, NR-U system, NTN system, non-NTN system, WLAN, Wi-Fi, cellular Internet of Things system, cellular passive Internet of Things system, and can also be applied to subsequent evolution systems of 5G NR system, and can also be applied to B5G, 6G and subsequent evolution systems.

[0070] In some embodiments of the present application, "NR" may also be referred to as a 5G NR system or a 5G system. A 5G mobile communication system may include a non-standalone (NSA) and / or standalone (SA) network.

[0071] The technical solutions provided in the embodiments of the present application can also be applied to machine type communication (MTC), long term evolution technology for machine-to-machine communication (LTE-M), device-to-device (D2D) network, machine-to-machine (M2M) network, Internet of Things (IoT) network or other networks. Among them, the IoT network can include, for example, the Internet of Vehicles. Among them, the communication mode in the Internet of Vehicles system is collectively referred to as vehicle to other devices (Vehicle to X, V2X, X can represent anything), for example, the V2X can include: vehicle to vehicle (V2V) communication, vehicle to infrastructure (V2I) communication, vehicle to pedestrian communication (V2P) or vehicle to network (V2N) communication, etc.

[0072] A terminal device that uses a wake-up receiver to wake up a main receiver for data transmission is more power-efficient than a terminal device in which the main receiver is always in an awake state. In the related art, the waveform of the wake-up signal received by the wake-up receiver is a simple waveform, and the coverage range of the wake-up signal is small, resulting in a limited range of energy-saving benefits. Moreover, when this wake-up signal with a simple waveform is sent through a single carrier, there will be a problem that the energy spectrum is too concentrated on a single frequency point, resulting in poor robustness of the wake-up signal and excessive frequency selectivity, that is, the wake-up signal is easy to change during transmission. In order to solve the above problems, an embodiment of the present application provides a first wake-up signal.

[0073] FIG4 shows a flowchart of a method for sending a wake-up signal provided by an exemplary embodiment of the present application. The method is executed by a network device and includes:

[0074] Step 410: Send a first wake-up signal.

[0075] Among them, the first wake-up signal is used to indicate the first information and the second information, the first information is associated with whether to wake up the second receiver of the terminal device, the terminal device includes a first receiver and a second receiver, the power consumption of the first receiver is less than the power consumption of the second receiver, and the second information is associated with the cell corresponding to the first wake-up signal.

[0076] In some embodiments, the first wake-up signal is a signal received by the first receiver, or a signal supported by the first receiver.

[0077] In some embodiments, the first wake-up signal is a signal obtained through two layers of modulation. The first layer of modulation is performed based on the first information to obtain an intermediate signal; the second layer of modulation is performed on the intermediate signal based on the second information to obtain the first wake-up signal. The first wake-up signal obtained through multi-layer modulation can increase the frequency response at multiple subcarrier positions and achieve a more even distribution of the energy spectrum. This increases the robustness of the first wake-up signal and improves its coverage.

[0078] In some embodiments, whether the first wake-up signal is received is used to indicate whether to wake up the second receiver of the terminal device to start detection of the control channel; wherein the detection of the control channel includes at least one of the following: DRX detection, paging detection, and PDCCH detection.

[0079] In some embodiments, when the first wake-up signal is received, it means that the second receiver of the terminal device is woken up to start the detection of the control channel. When the first wake-up signal is not received, it means that the second receiver of the terminal device is not needed and the detection of the control channel is not started.

[0080] The generation methods of the third sequence include: generation method 1 and generation method 2. Different embodiments may use any one of the two generation methods.

[0081] Generation method 1:

[0082] In some embodiments, the first wake-up signal is generated based on a third sequence, and the third sequence is a sequence generated based on the first sequence and the second sequence; wherein the first sequence is used to indicate the first information, and the second sequence is used to indicate the second information.

[0083] In some embodiments, the second sequence is a sequence associated with the cell corresponding to the first wake-up signal, and includes at least one of the following:

[0084] Complex sequences such as Constant Amplitude Zero Auto Correlation (CAZAC) sequence and ZC (Zaddoff Chu) sequence; real sequences such as Pseudo-Noise (PN) sequence, Gold sequence, M sequence, and Hadamard sequence.

[0085] Exemplarily, the first sequence is {1, 0, 0, 1}, used to indicate waking up the second receiver, and the second sequence is {S1, S2, S3}, used to indicate a cell corresponding to the first wake-up signal, for example, cell 1;

[0086] Alternatively, the first sequence is {0, 0, 0, 1}, which is used to indicate not waking up the second receiver, and the second sequence is {S1, S2}, which is used to indicate a cell corresponding to the first wake-up signal, for example, cell 2.

[0087] By using the first sequence to indicate the first information and the second sequence to indicate the second information, the terminal device can obtain cell-related information and information for waking up the second receiver, thereby reducing interference between cells.

[0088] Generation method 2:

[0089] In some embodiments, the first wake-up signal is generated based on a third sequence, and the third sequence is a sequence generated based on the first sequence and the second sequence; wherein the second sequence is used to indicate the first information and the second information.

[0090] For example, the first sequence is {1,0}, which is used to indicate waking up the second receiver, and the second sequence is {S 10 ,S 20 ,S 30}, used to indicate waking up the second receiver and the cell corresponding to the first wake-up signal, such as cell 1;

[0091] Alternatively, the first sequence is {0,1}, used to indicate other information, and the second sequence is {S 11 ,S 21 ,S 31}, used to indicate waking up the second receiver and the cell corresponding to the first wake-up signal, such as cell 2.

[0092] The second sequence is used to indicate the first information and the second information. The terminal device can obtain cell-related information and information for waking up the second receiver from the second sequence. The indication of the first information and the second information can be completed without the first sequence. The first sequence can be used to indicate other information.

[0093] In some embodiments, the first sequence is used to indicate the first information. For example, the first sequence is {1, 0}, which is used to indicate waking up the second receiver.

[0094] The second sequence is used to indicate the first information and the second information at the same time, and the first sequence is used to indicate the first information, which is equivalent to double indication of the first information, thereby improving the reliability of obtaining the information for waking up the second receiver.

[0095] In some embodiments, the third sequence is a sequence generated by multiplying the first sequence and the second sequence; or, the third sequence is a sequence generated by modulating the first sequence and the second sequence; or, the third sequence is a sequence generated by multiplying the fourth sequence and the second sequence, and the fourth sequence is obtained by spreading the first sequence; or, the third sequence is a sequence generated by modulating the fourth sequence and the second sequence.

[0096] Optionally, the first sequence is not spread, and the first sequence and the second sequence are multiplied (or modulated) to generate a third sequence; or the first sequence is spread to obtain a fourth sequence, and the fourth sequence and the second sequence are multiplied (or modulated) to generate a third sequence.

[0097] In some embodiments, bits in the first sequence or the fourth sequence whose value is 0 are not multiplied with elements in the second sequence.

[0098] In some embodiments, bits with a value of 1 in the first sequence are multiplied by elements in the second sequence to generate a third sequence.

[0099] In some embodiments, bits in the fourth sequence with a value of 1 are multiplied by elements in the second sequence to generate a third sequence.

[0100] Exemplarily, the first sequence is {1,1}, the second sequence is {S1,S2}, and the third sequence is a sequence generated by multiplying the first sequence and the second sequence. The bits with a value of 1 in the first sequence are multiplied by the elements in the second sequence to generate the third sequence, i.e., {S1,S2,S1,S2}.

[0101] In some embodiments, the i-th bit in the first sequence with a value of 1 is multiplied by the i-th element in the second sequence to generate a third sequence, the number of bits in the first sequence with a value of 1 is equal to the number of elements in the second sequence, the second sequence includes x elements, and i is a positive integer not greater than x.

[0102] In some embodiments, the i-th bit in the fourth sequence with a value of 1 is multiplied by the i-th element in the second sequence to generate a third sequence, the number of bits with a value of 1 in the first sequence is equal to the number of elements in the second sequence, the second sequence includes x elements, and i is a positive integer not greater than x.

[0103] Exemplarily, the first sequence is {1, 0}, and when the spreading factor is 4, the spread is the fourth sequence {1, 1, 1, 1, 0, 0, 0}, the second sequence is {S1, S2, S3, S4}, and the third sequence is a sequence generated by multiplying the fourth sequence and the second sequence. The i-th bit with a value of 1 in the fourth sequence is multiplied by the i-th element in the second sequence to generate the third sequence, i.e., {S1, S2, S3, S4, 0, 0, 0}.

[0104] In some embodiments, the second sequence includes x elements, and the kth bit in the first sequence is multiplied by the i-th element in the second sequence to generate a third sequence, where i=k mod x, i is a positive integer not greater than x, the first sequence includes y bits, and k is a positive integer not greater than y.

[0105] In some embodiments, the second sequence includes x elements, and the kth bit in the fourth sequence is multiplied by the i-th element in the second sequence to generate a third sequence, where i=k mod x, i is a positive integer not greater than x, and the fourth sequence includes z bits, k is a positive integer not greater than z.

[0106] Exemplarily, the second sequence is {S1, S2, S3} including 3 elements, the first sequence is {1, 1, 1, 0, 0, 0, 1, 1, 1, 0, 0, 0}, and the k-th bit in the first sequence is multiplied by the i-th element in the second sequence to generate the third sequence, i.e., {S1, S2, S3, 0, 0, 0, S1, S2, S3, 0, 0, 0}.

[0107] The first wake-up signal is generated based on the third sequence. The third sequence is generated by multiplying the first sequence (or the fourth sequence) by the second sequence, so that the first wake-up signal can be used to indicate the first information and the second information.

[0108] In some embodiments, the spreading factor of the first sequence is determined based on the length of the second sequence.

[0109] In some embodiments, the value of the spreading factor includes at least one of the following: the length value of the second sequence; the quotient of the length value of the second sequence and the first number; wherein the first number is the number of bits in the first sequence whose value is 1.

[0110] For example, the first sequence is {1, 0, 1, 0}, the first number is 2, the second sequence is {S1, S2, S3, S4, S5, S6}, and the length of the second sequence is 6. The spreading factor can be 6 or 3, that is, the quotient of 6 and 2. The spreading factor may have other values, which are not limited in this embodiment of the present application.

[0111] In some embodiments, the first wake-up signal includes two modulation modes: modulation mode 1 and modulation mode 2. Different embodiments may use either modulation mode. The third sequence in modulation mode 1 undergoes a Fourier transform, while the third sequence in modulation mode 2 does not undergo a Fourier transform.

[0112] Modulation mode 1: The first wake-up signal is generated by at least one subcarrier through inverse Fourier transform, and at least one subcarrier is a subcarrier mapped by the third sequence after Fourier transform.

[0113] In some embodiments, the first sequence is used to indicate first information, and the second sequence is used to indicate second information. The first information is associated with whether to wake up the second receiver, and the second information is associated with the cell corresponding to the first wake-up signal.

[0114] In some embodiments, the first wake-up signal is generated based on a third sequence, and the third sequence is a sequence generated based on the first sequence and the second sequence.

[0115] In some embodiments, FIG6 shows a schematic diagram of modulating a first wake-up signal provided by an exemplary embodiment of the present application. The steps of modulating the first wake-up signal are as follows:

[0116] Step 11: Get the first sequence.

[0117] In some embodiments, the first sequence is any one of the following: an original sequence that does not require encoding; an original sequence before encoding; an encoded sequence after encoding the original sequence; or an encoded sequence after performing at least one level of multi-level encoding on the original sequence.

[0118] Step 12: Multiply the first sequence and the second sequence to generate the third sequence.

[0119] In some embodiments, a first sequence is spread-spectrum processed. Spread-spectrum processing refers to a process in which each bit or element in the sequence is repeated K times, where K is a positive integer greater than 1. Taking spread-spectrum processing as an example, assuming the first sequence is {1, 0, 0, 1} and the spreading factor K = 4, the spread spectrum is {1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1}. This example assumes that the first sequence is not spread-spectrum processed.

[0120] In some embodiments, the second sequence is a sequence associated with the cell corresponding to the first wake-up signal, including at least one of the following: a complex sequence such as a CAZAC sequence and a ZC sequence; a real sequence such as a PN sequence, a Gold sequence, an M sequence, and a Hadamard sequence.

[0121] In some embodiments, the second sequence is {S1(1), S1(2), ..., S1(m)}, where m is the length of the second sequence. For example, if m is 3, the second sequence is {S1(1), S1(2), S1(3)}.

[0122] In some embodiments, the third sequence is a sequence generated by multiplying the first sequence and the second sequence, for example, {S1(1), S1(2), S1(3), 0, 0, 0, 0, 0, 0, S1(1), S1(2), S1(3)}, where y(1) corresponds to S1(1), y(2) corresponds to S1(2), y(3) corresponds to S1(3), y(4) corresponds to 0, and so on until y(12) corresponds to S1(3).

[0123] Step 13: Perform time-frequency transformation on the third sequence to obtain n subcarriers.

[0124] In some embodiments, time-frequency transform, i.e., Discrete Fourier Transform (DFT), refers to the process of transforming a sequence (third sequence) in the time domain into frequency domain data of a plurality of sampling points. The frequency domain data after the time-frequency transform is modulated to at least one subcarrier, such as n subcarriers. Wherein, n is the number of elements of the third sequence, n is a positive integer multiple of m, and the value of n can be {2, 4, 6, 8, 12, 16, 24, 36, 48, 60, 72} or other positive integers. In this example, the value of n is 12.

[0125] Step 14: Perform inverse time-frequency transform on the n subcarriers to generate a first wake-up signal.

[0126] In some embodiments, the n subcarrier signals are transformed into a first wake-up signal through an Invert Fast Fourier Transformation (IFFT). The waveform of the first wake-up signal in the time domain is represented as a first waveform 610 .

[0127] In some embodiments, the n subcarrier signals may be multiplexed with other NR signals before IFFT, and the orthogonal frequency division multiplexing (OFDM) symbol length of the other NR signals is a positive integer multiple of the chip length of the first wake-up signal. The chip length of the first wake-up signal is the length of each symbol, such as the length of symbol "1" or symbol "0" in the first wake-up signal in FIG6 .

[0128] By performing DFT on the third sequence, the OFDM symbol length of other NR signals is a positive integer multiple of the chip length of the first wake-up signal, so that one OFDM symbol can transmit multiple chip information.

[0129] Modulation mode 2: The first wake-up signal is generated by at least one subcarrier through inverse Fourier transform, and at least one subcarrier is a subcarrier mapped to the third sequence.

[0130] In some embodiments, the first sequence is used to indicate first information, and the second sequence is used to indicate second information. The first information is associated with whether to wake up the second receiver, and the second information is associated with the cell corresponding to the first wake-up signal.

[0131] In some embodiments, the first wake-up signal is generated based on a third sequence, and the third sequence is a sequence generated based on the first sequence and the second sequence.

[0132] In some embodiments, FIG7 shows a schematic diagram of modulating a first wake-up signal provided by an exemplary embodiment of the present application. The steps of modulating the first wake-up signal are as follows:

[0133] Step 21: Obtain the first sequence.

[0134] In some embodiments, the first sequence is any one of the following: an original sequence that does not require encoding; an original sequence before encoding; an encoded sequence after encoding the original sequence; or an encoded sequence after performing at least one level of multi-level encoding on the original sequence.

[0135] Step 22: Multiply the first sequence and the second sequence to generate a third sequence.

[0136] In some embodiments, a first sequence is spread-spectrum processed. Spread-spectrum processing refers to a process in which each bit or element in the sequence is repeated K times, where K is a positive integer greater than 1. Taking spread-spectrum processing as an example, assuming the first sequence is {1, 0, 0, 1} and the spreading factor K = 4, the spread spectrum is {1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1}. This example assumes that the first sequence is not spread-spectrum processed.

[0137] In some embodiments, the second sequence is a sequence associated with the cell corresponding to the first wake-up signal, including at least one of the following: a complex sequence such as a CAZAC sequence and a ZC sequence; a real sequence such as a PN sequence, a Gold sequence, an M sequence, and a Hadamard sequence.

[0138] In some embodiments, the second sequence is {S1(1), S1(2), ..., S1(m)}, where m is the length of the second sequence. For example, if m is 3, the second sequence is {S1(1), S1(2), S1(3)}.

[0139] In some embodiments, the third sequence is a sequence generated by multiplying the first sequence and the second sequence, for example, {S1(1), S1(2), S1(3), 0, 0, 0, 0, 0, 0, S1(1), S1(2), S1(3)}, where y(1) corresponds to S1(1), y(2) corresponds to S1(2), y(3) corresponds to S1(3), y(4) corresponds to 0, and so on until y(12) corresponds to S1(3).

[0140] Step 23: Map the third sequence to n subcarriers.

[0141] In some embodiments, DFT is not performed on the third sequence, and the third sequence is directly mapped to n subcarriers, where n is the number of elements of the third sequence, n is a positive integer multiple of m, and the value of n can be {2, 4, 6, 8, 12, 16, 24, 36, 48, 60, 72} or other positive integers. In this example, the value of n is 12.

[0142] Step 24: Perform inverse time-frequency transform on the n subcarriers to generate a first wake-up signal.

[0143] In some embodiments, n subcarrier signals are processed through IFFT to generate a first wake-up signal. The waveform of the first wake-up signal in the time domain is represented as a second waveform 710 .

[0144] In some embodiments, the n subcarrier signals may be multiplexed with other NR signals before performing IFFT, and the OFDM symbol length of the other NR signals is equal to the chip length of the first wake-up signal. The chip length of the first wake-up signal is the length of each symbol, such as the length of symbol "1" or symbol "0" in the first wake-up signal in FIG7 .

[0145] By not performing DFT or other pre-transformations on the third sequence, the OFDM symbol length of other NR signals is equal to the chip length of the first wake-up signal, and the first wake-up signal is more compatible with other NR signals (OFDM signals).

[0146] In some embodiments, multiple candidate sequences are pre-set for the second sequence, each candidate sequence corresponds to its own sequence identifier (ID), and each candidate sequence corresponds to one or more cells, or in other words, each candidate sequence corresponds to one or more cell IDs. The cell corresponding to the first wake-up signal is the first cell, and the association method of the sequence ID of the second sequence and the cell ID of the first cell includes:

[0147] The sequence ID is a value obtained by performing a modulo operation on the cell ID and the total sequence number, where the total sequence number is the total number of cell IDs.

[0148] For example, sequence ID = cell ID mod X, where X is the total number of sequences. In this case, the cell ID is equal to the selected sequence ID. If there are 20 cells (cell IDs are 0-19), the cell ID is divided by 20 to obtain a remainder, which is a value between 0 and 19. If this remainder is 8, the sequence with sequence ID 8 is selected.

[0149] Optionally, the total number of sequences is the number of sequences associated with the indicated cell ID, and these sequences include the second sequence.

[0150] Exemplarily, sequence ID = cell ID mod X, where X is the total number of sequences. In this case, the cell ID is equal to the selected sequence ID. Given 128 cells (cell IDs 0-127) and 20 sequences associated with the indicated cell ID (sequence IDs 0-19), the cell ID is divided by 20 to obtain a remainder, which is a value between 0 and 19. If this remainder is 8, the sequence with sequence ID 8 is selected.

[0151] There may be other ways to associate the sequence ID of the second sequence with the cell ID of the first cell, which is not limited in the embodiment of the present application. By associating different sequence IDs with cell IDs, the needs for sequence IDs and cell IDs in different scenarios can be met.

[0152] In some embodiments, the first wake-up signal further carries ID information of the target terminal device. In the case where the first wake-up signal carries the ID information of the target terminal device, the first wake-up signal is received by the target terminal device.

[0153] In some embodiments, the first wake-up signal further carries group ID information of the target terminal device group. When the first wake-up signal carries the group ID information of the target terminal device group, all or some of the terminal devices in the target terminal device group receive the first wake-up signal.

[0154] In some embodiments, the awakening of the terminal device is indicated by ID information or group ID information, or the awakening of the terminal device is indicated by mapping different ID information or group ID information into a bitmap.

[0155] In summary, the method provided in this embodiment sends a first wake-up signal. The first wake-up signal is used to indicate first information and second information, the first information is associated with whether to wake up the second receiver of the terminal device, the terminal device includes a first receiver and a second receiver, the power consumption of the first receiver is less than the power consumption of the second receiver, and the second information is associated with the cell corresponding to the first wake-up signal. Since the second information is associated with the cell corresponding to the first wake-up signal, interference between different cells is reduced, and the first wake-up signal increases the signal coverage range compared to the ordinary wake-up signal, thereby increasing the scope of energy saving benefits.

[0156] The first wake-up signal in the method provided in this embodiment is obtained through multi-layer modulation, which can increase the frequency response at multiple subcarrier positions, so that the energy spectrum of the first wake-up signal can be distributed more evenly, thereby improving the robustness of the first wake-up signal and increasing the coverage range of the first wake-up signal.

[0157] FIG8 shows a flowchart of a method for receiving a wake-up signal provided by an exemplary embodiment of the present application. The method is performed by a terminal device, which includes a first receiver and a second receiver. The power consumption of the first receiver is less than that of the second receiver. The method includes:

[0158] Step 810: Receive a first wake-up signal through a first receiver.

[0159] The first wake-up signal is used to indicate first information and second information, the first information is associated with whether to wake up the second receiver, and the second information is associated with the cell corresponding to the first wake-up signal.

[0160] In some embodiments, based on the first wake-up signal, detection of the control channel is initiated; wherein the detection of the control channel includes: at least one of: DRX detection, paging detection, and PDCCH detection.

[0161] In some embodiments, the terminal device detects the signal quality of the first wake-up signal. Signal quality is determined by the signal-to-noise ratio (SINR) or signal strength. SINR refers to the ratio of signal to noise, usually expressed in decibels (dB). When the signal-to-noise ratio is large, it indicates less noise and better signal quality; when the signal-to-noise ratio is small, it indicates more noise and poor signal quality. Signal strength refers to the strength or power level of the received signal, usually expressed in decibel milliwatts (dBm). When the signal strength is large, it indicates high signal strength; when the signal strength is small, it indicates low signal strength.

[0162] In some embodiments, when the signal quality of the first wake-up signal is greater than a first threshold, detection of the control channel is initiated based on the time domain resources and frequency domain resources associated with the first information;

[0163] In a case where the signal quality of the first wake-up signal is less than a first threshold, detection of the control channel is initiated.

[0164] In some embodiments, the first threshold is a preset threshold, or a threshold configured by the network device.

[0165] In some embodiments, when the signal quality of the first wake-up signal is equal to the first threshold, detection of the control channel is initiated based on the time domain resources and frequency domain resources associated with the first information; or, detection of the control channel is directly initiated.

[0166] Exemplarily, the first threshold is -60dBm. When the signal strength of the first wake-up signal is -50dBm or greater than -60dBm, the detection of the control channel is initiated based on the time domain resources and frequency domain resources associated with the first information. As shown in Figure 5, the time when the first wake-up signal is received is time T0, and time T1 to time T2 are the first time slot after the first wake-up signal is received. The first time slot is the time domain resource associated with the first information. At the start of the first time slot, the detection of the control channel is initiated in the frequency domain resource indicated by the CORESET. The frequency domain resource indicated by the CORESET is the frequency domain resource associated with the first information.

[0167] When the signal strength of the first wake-up signal is -70 dBm and is less than -60 dBm, detection of the control channel is directly started.

[0168] If the signal quality of the first wake-up signal is greater than the first threshold, it can be indicated that the first wake-up signal is received successfully, and the detection of the control channel is started according to the time domain resources and frequency domain resources associated with the first information; if the signal quality of the first wake-up signal is less than the first threshold, it can be indicated that the first wake-up signal is received unsuccessfully. Compared with continuing to try to receive the first wake-up signal and then starting the detection of the control channel, directly starting the detection of the control channel can reduce the power consumption of the terminal device.

[0169] In some embodiments, the first wake-up signal is generated based on a third sequence, and the third sequence is a sequence generated based on the first sequence and the second sequence;

[0170] The first sequence is used to indicate the first information, and the second sequence is used to indicate the second information.

[0171] In some embodiments, the first wake-up signal is generated based on a third sequence, and the third sequence is a sequence generated based on the first sequence and the second sequence; wherein the second sequence is used to indicate the first information and the second information.

[0172] In some embodiments, the first sequence is used to indicate first information.

[0173] In some embodiments, the third sequence is a sequence generated by multiplying the first sequence and the second sequence; or, the third sequence is a sequence generated by modulating the first sequence and the second sequence; or, the third sequence is a sequence generated by multiplying the fourth sequence and the second sequence, and the fourth sequence is obtained by spreading the first sequence; or, the third sequence is a sequence generated by modulating the fourth sequence and the second sequence.

[0174] In some embodiments, the spreading factor of the first sequence is determined based on the length of the second sequence.

[0175] In some embodiments, the value of the spreading factor includes at least one of the following:

[0176] The length of the second sequence; the quotient of the length of the second sequence and the first number;

[0177] The first number is the number of bits whose value is 1 in the first sequence.

[0178] In some embodiments, the cell corresponding to the first wake-up signal is the first cell, and the association method of the sequence ID of the second sequence and the cell ID of the first cell includes:

[0179] The sequence ID is a value obtained by performing a modulo operation on the cell ID and the total sequence number, where the total sequence number is the total number of cell IDs.

[0180] In some embodiments, the first wake-up signal is generated by at least one subcarrier through inverse Fourier transform, and the at least one subcarrier is a subcarrier mapped by the third sequence after Fourier transform.

[0181] In some embodiments, the first wake-up signal is generated by inverse Fourier transform of at least one subcarrier, and the at least one subcarrier is a subcarrier mapped to the third sequence.

[0182] In some embodiments, the terminal device demodulates the first wake-up signal as follows:

[0183] Step 31: Demodulate the first wake-up signal into a third sequence through a demodulator.

[0184] In some embodiments, the terminal device demodulates the first wake-up signal having, for example, the first waveform 610 in the embodiment of Figure 6 into a third sequence, for example, the third sequence is {S1(1), S1(2), S1(3), 0, 0, 0, 0, 0, S1(1), S1(2), S1(3)}.

[0185] Step 32: Determine the second information carried by the third sequence.

[0186] In some embodiments, the second information is associated with the cell corresponding to the first wake-up signal, and the second sequence is used to indicate the second information, including at least one of the following: complex sequences such as CAZAC sequence and ZC sequence; real sequences such as PN sequence, Gold sequence, M sequence, and Hadamard sequence.

[0187] Exemplarily, when the third sequence is {S1(1), S1(2), S1(3), 0, 0, 0, 0, 0, 0, S1(1), S1(2), S1(3)}, the second sequence is determined to be {S1(1), S1(2), S1(3)}.

[0188] Step 33: Based on the second information, determine the first information carried by the third sequence.

[0189] In some embodiments, the first information is associated with whether to wake up the second receiver, and the first sequence is used to indicate the first information.

[0190] In some embodiments, the third sequence is a sequence generated by multiplying the first sequence and the second sequence. When the third sequence and the second sequence are known, the first sequence can be obtained.

[0191] For example, when the third sequence is {S1(1), S1(2), S1(3), 0, 0, 0, 0, 0, 0, S1(1), S1(2), S1(3)} and the second sequence is {S1(1), S1(2), S1(3)}, the first sequence is {1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1}.

[0192] In some embodiments, the first sequence is spread spectrum processed into a fourth sequence, and the third sequence is a sequence generated by multiplying the fourth sequence and the second sequence. Therefore, the fourth sequence needs to be downsampled. For example, when the fourth sequence is {1,1,1,1,0,0,0,0,0,0,0,0,1,1,1,1}, downsampling is performed to obtain the first sequence {1,0,0,1}, which is used to indicate the wake-up of the second receiver.

[0193] In some embodiments, the first information is associated with whether to wake up the second receiver, and the second sequence is used to indicate the first information and the second information.

[0194] Exemplarily, the third sequence is {S 10 ,S 20 ,S 30 ,0,0,0}, the second sequence is {S 10 ,S 20 ,S 30}, used to indicate waking up the second receiver and the cell corresponding to the first wake-up signal, such as cell 1.

[0195] The specific implementation details of the terminal device side embodiment refer to the network device side embodiment and will not be repeated here.

[0196] In summary, the method provided in this embodiment receives a first wake-up signal via a first receiver. The first wake-up signal indicates first and second information, with the first information being associated with whether to wake up the second receiver, and the second information being associated with the cell corresponding to the first wake-up signal. Because the second information is associated with the cell corresponding to the first wake-up signal, interference between cells is reduced. Furthermore, compared to conventional wake-up signals, the first wake-up signal increases signal coverage, thereby increasing the scope of energy savings.

[0197] The first wake-up signal in the method provided in this embodiment is obtained through multi-layer modulation, which can increase the frequency response at multiple subcarrier positions, so that the energy spectrum of the first wake-up signal can be distributed more evenly, thereby improving the robustness of the first wake-up signal and increasing the coverage range of the first wake-up signal.

[0198] In the above embodiments, the embodiment corresponding to Figure 4 and the embodiment corresponding to Figure 8 can be implemented separately or in combination, and this application does not limit this. Figure 9 shows a schematic diagram of a communication scenario provided by an exemplary embodiment of the present application.

[0199] In some embodiments, network device 120 sends a normal wake-up signal or a first wake-up signal. The normal wake-up signal has a first coverage range, while the first wake-up signal has a second coverage range, which is greater than the first coverage range. The normal wake-up signal consumes less power but has a smaller coverage range. The first wake-up signal consumes more power than the normal wake-up signal but can wake up the terminal device within a larger coverage range.

[0200] In some embodiments, the terminal device includes a first receiver and a second receiver, and the power consumption of the first receiver is less than the power consumption of the second receiver. For example, the first receiver is a wake-up receiver and the second receiver is a main receiver.

[0201] In some embodiments, the first wake-up signal indicates first information and second information. The first information is associated with whether to wake up the second receiver, and the second information is associated with the cell corresponding to the first wake-up signal. The first wake-up signal is obtained through multi-layer modulation, which can increase the frequency response at multiple subcarrier positions and achieve a more even energy spectrum distribution. Therefore, the first wake-up signal is more robust and has a wider coverage range.

[0202] In some embodiments, the first terminal device 111 is within a first coverage area, and the second terminal device 112 is within a second coverage area. The first terminal device 111 can receive the first wake-up signal and the common wake-up signal, while the second terminal device 112 can only receive the first wake-up signal.

[0203] In some embodiments, the first terminal device 111 receives a first wake-up signal. Since the second information indicated by the first wake-up signal is associated with the cell corresponding to the first wake-up signal, for example, indicating cell 1, the first terminal device 111 is associated with cell 1, reducing interference between different cells.

[0204] In some embodiments, after receiving the first wake-up signal, the first terminal device 111 and the second terminal device 112 initiate detection of the control channel based on the time domain resources and frequency domain resources associated with the first information when the signal quality of the first wake-up signal is greater than a first threshold; wherein the detection of the control channel includes: at least one of: DRX detection, paging detection, and PDCCH detection.

[0205] FIG10 shows a block diagram of a device for sending a wake-up signal according to an exemplary embodiment of the present application. The device can be implemented as a network device or as part of a network device through software or hardware or a combination of both. The device includes:

[0206] A sending module 1010 is configured to send a first wake-up signal;

[0207] Among them, the first wake-up signal is used to indicate the first information and the second information, the first information is associated with whether to wake up the second receiver of the terminal device, the terminal device includes a first receiver and a second receiver, the power consumption of the first receiver is less than the power consumption of the second receiver, and the second information is associated with the cell corresponding to the first wake-up signal.

[0208] In a possible design of this embodiment, the first wake-up signal is a signal received by the first receiver, or a signal supported by the first receiver.

[0209] In one possible design of this embodiment, the first wake-up signal is a signal obtained through two layers of modulation. The first layer of modulation is performed based on the first information to obtain an intermediate signal; the second layer of modulation is performed on the intermediate signal based on the second information to obtain the first wake-up signal. The first wake-up signal obtained through multi-layer modulation can increase the frequency response at multiple subcarrier positions and achieve a more even distribution of the energy spectrum. This increases the robustness of the first wake-up signal, thereby increasing its coverage range.

[0210] In a possible design of this embodiment, whether the first wake-up signal is received is used to indicate whether to wake up the second receiver of the terminal device to start detection of the control channel; wherein the detection of the control channel includes at least one of the following: DRX detection, paging detection, and PDCCH detection.

[0211] In a possible design of this embodiment, when the first wake-up signal is received, it indicates that the second receiver of the terminal device is awakened to start the detection of the control channel. When the first wake-up signal is not received, it indicates that the second receiver of the terminal device is not needed and the detection of the control channel is not started.

[0212] The generation methods of the third sequence include: generation method 1 and generation method 2. Different embodiments may use any one of the two generation methods.

[0213] Generation method 1:

[0214] In a possible design of this embodiment, the first wake-up signal is generated based on a third sequence, and the third sequence is a sequence generated based on the first sequence and the second sequence; wherein the first sequence is used to indicate the first information, and the second sequence is used to indicate the second information.

[0215] In a possible design of this embodiment, the second sequence is a sequence associated with the cell corresponding to the first wake-up signal, and includes at least one of the following:

[0216] Complex sequences such as Constant Amplitude Zero Auto Correlation (CAZAC) sequence and ZC (Zaddoff Chu) sequence; real sequences such as Pseudo-Noise (PN) sequence, Gold sequence, M sequence, and Hadamard sequence.

[0217] Exemplarily, the first sequence is {1, 0, 0, 1}, used to indicate waking up the second receiver, and the second sequence is {S1, S2, S3}, used to indicate a cell corresponding to the first wake-up signal, for example, cell 1;

[0218] Alternatively, the first sequence is {0, 0, 0, 1}, which is used to indicate not waking up the second receiver, and the second sequence is {S1, S2}, which is used to indicate a cell corresponding to the first wake-up signal, for example, cell 2.

[0219] By using the first sequence to indicate the first information and the second sequence to indicate the second information, the terminal device can obtain cell-related information and information for waking up the second receiver, thereby reducing interference between cells.

[0220] Generation method 2:

[0221] In a possible design of this embodiment, the first wake-up signal is generated based on a third sequence, and the third sequence is a sequence generated based on the first sequence and the second sequence; wherein the second sequence is used to indicate the first information and the second information.

[0222] For example, the first sequence is {1,0}, which is used to indicate waking up the second receiver, and the second sequence is {S 10 ,S 20 ,S 30}, used to indicate waking up the second receiver and the cell corresponding to the first wake-up signal, such as cell 1;

[0223] Alternatively, the first sequence is {0,1}, used to indicate other information, and the second sequence is {S 11 ,S 21 ,S 31}, used to indicate waking up the second receiver and the cell corresponding to the first wake-up signal, such as cell 2.

[0224] The second sequence is used to indicate the first information and the second information. The terminal device can obtain cell-related information and information for waking up the second receiver from the second sequence. The indication of the first information and the second information can be completed without the first sequence. The first sequence can be used to indicate other information.

[0225] In a possible design of this embodiment, the first sequence is used to indicate the first information. For example, the first sequence is {1, 0}, which is used to indicate waking up the second receiver.

[0226] The second sequence is used to indicate the first information and the second information at the same time, and the first sequence is used to indicate the first information, which is equivalent to double indication of the first information, thereby improving the reliability of obtaining the information for waking up the second receiver.

[0227] In a possible design of this embodiment, the third sequence is a sequence generated by multiplying the first sequence and the second sequence; or, the third sequence is a sequence generated by modulating the first sequence and the second sequence; or, the third sequence is a sequence generated by multiplying the fourth sequence and the second sequence, where the fourth sequence is obtained by spreading the first sequence; or, the third sequence is a sequence generated by modulating the fourth sequence and the second sequence.

[0228] Optionally, the first sequence is not spread, and the first sequence and the second sequence are multiplied (or modulated) to generate a third sequence; or the first sequence is spread to obtain a fourth sequence, and the fourth sequence and the second sequence are multiplied (or modulated) to generate a third sequence.

[0229] In a possible design of this embodiment, bits with a value of 0 in the first sequence or the fourth sequence are not multiplied with elements in the second sequence.

[0230] In a possible design of this embodiment, bits with a value of 1 in the first sequence are multiplied by elements in the second sequence to generate a third sequence.

[0231] In a possible design of this embodiment, bits with a value of 1 in the fourth sequence are multiplied by elements in the second sequence to generate a third sequence.

[0232] Exemplarily, the first sequence is {1,1}, the second sequence is {S1,S2}, and the third sequence is a sequence generated by multiplying the first sequence and the second sequence. The bits with a value of 1 in the first sequence are multiplied by the elements in the second sequence to generate the third sequence, i.e., {S1,S2,S1,S2}.

[0233] In a possible design of this embodiment, the i-th bit with a value of 1 in the first sequence is multiplied by the i-th element in the second sequence to generate a third sequence. The number of bits with a value of 1 in the first sequence is equal to the number of elements in the second sequence. The second sequence includes x elements, and i is a positive integer not greater than x.

[0234] In a possible design of this embodiment, the i-th bit in the fourth sequence with a value of 1 is multiplied by the i-th element in the second sequence to generate a third sequence. The number of bits with a value of 1 in the first sequence is equal to the number of elements in the second sequence. The second sequence includes x elements, and i is a positive integer not greater than x.

[0235] Exemplarily, the first sequence is {1,0}, and when the spreading factor is 4, the spread is the fourth sequence {1,1,1,1,0,0,0,0}, the second sequence is {S1,S2,S3,S4}, and the third sequence is a sequence generated by multiplying the fourth sequence and the second sequence. The i-th bit with a value of 1 in the fourth sequence is multiplied by the i-th element in the second sequence to generate the third sequence, i.e., {S1,S2,S3,S4,0,0,0,0}.

[0236] In a possible design of this embodiment, the second sequence includes x elements, and the k-th bit in the first sequence is multiplied by the i-th element in the second sequence to generate a third sequence, where i=k mod x, i is a positive integer not greater than x, and the first sequence includes y bits, and k is a positive integer not greater than y.

[0237] In a possible design of this embodiment, the second sequence includes x elements, and the k-th bit in the fourth sequence is multiplied by the i-th element in the second sequence to generate a third sequence, where i=k mod x, i is a positive integer not greater than x, and the fourth sequence includes z bits, k is a positive integer not greater than z.

[0238] Exemplarily, the second sequence is {S1, S2, S3} including 3 elements, the first sequence is {1, 1, 1, 0, 0, 0, 1, 1, 1, 0, 0, 0}, and the k-th bit in the first sequence is multiplied by the i-th element in the second sequence to generate the third sequence, i.e., {S1, S2, S3, 0, 0, 0, S1, S2, S3, 0, 0, 0}.

[0239] The first wake-up signal is generated based on the third sequence. The third sequence is generated by multiplying the first sequence (or the fourth sequence) by the second sequence, so that the first wake-up signal can be used to indicate the first information and the second information.

[0240] In a possible design of this embodiment, the spreading factor of the first sequence is determined based on the length of the second sequence.

[0241] In a possible design of this embodiment, the value of the spreading factor includes at least one of the following: the length value of the second sequence; the quotient of the length value of the second sequence and the first number; wherein the first number is the number of bits in the first sequence whose value is 1.

[0242] For example, the first sequence is {1, 0, 1, 0}, the first number is 2, the second sequence is {S1, S2, S3, S4, S5, S6}, and the length of the second sequence is 6. The spreading factor can be 6 or 3, that is, the quotient of 6 and 2. The spreading factor may have other values, which are not limited in this embodiment of the present application.

[0243] In one possible design of this embodiment, the first wake-up signal includes two modulation modes: modulation mode 1 and modulation mode 2. Different embodiments may use either modulation mode. The third sequence in modulation mode 1 is Fourier transformed, while the third sequence in modulation mode 2 is not Fourier transformed.

[0244] Modulation mode 1: The first wake-up signal is generated by at least one subcarrier through inverse Fourier transform, and at least one subcarrier is a subcarrier mapped by the third sequence after Fourier transform.

[0245] In a possible design of this embodiment, the first sequence is used to indicate first information, and the second sequence is used to indicate second information. The first information is associated with whether to wake up the second receiver, and the second information is associated with the cell corresponding to the first wake-up signal.

[0246] In a possible design of this embodiment, the first wake-up signal is generated based on a third sequence, and the third sequence is a sequence generated based on the first sequence and the second sequence.

[0247] In a possible design of this embodiment, FIG6 shows a schematic diagram of modulating a first wake-up signal provided by an exemplary embodiment of the present application. The modulation steps of the first wake-up signal are as follows:

[0248] Step 11: Get the first sequence.

[0249] In a possible design of this embodiment, the first sequence is any one of the following: an original sequence that does not require encoding; an original sequence before encoding; an encoded sequence after the original sequence is encoded; or an encoded sequence after at least one level of multi-level encoding is performed on the original sequence.

[0250] Step 12: Multiply the first sequence and the second sequence to generate the third sequence.

[0251] In one possible design of this embodiment, spreading is performed on the first sequence. Spreading refers to repeating each bit or element in the sequence K times, where K is a positive integer greater than 1. Taking spreading as an example, assuming the first sequence is {1, 0, 0, 1} and the spreading factor K = 4, the spreading sequence is {1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1}. This example assumes that the first sequence is not spread.

[0252] In a possible design of this embodiment, the second sequence is a sequence associated with the cell corresponding to the first wake-up signal, including at least one of the following: a complex sequence such as a CAZAC sequence and a ZC sequence; a real sequence such as a PN sequence, a Gold sequence, an M sequence, and a Hadamard sequence.

[0253] In one possible design of this embodiment, the second sequence is {S1(1), S1(2), ..., S1(m)}, where m is the length of the second sequence. For example, if m is 3, the second sequence is {S1(1), S1(2), S1(3)}.

[0254] In a possible design of this embodiment, the third sequence is a sequence generated by multiplying the first sequence and the second sequence, for example, {S1(1), S1(2), S1(3), 0, 0, 0, 0, 0, 0, S1(1), S1(2), S1(3)}, where y(1) corresponds to S1(1), y(2) corresponds to S1(2), y(3) corresponds to S1(3), y(4) corresponds to 0, and so on until y(12) corresponds to S1(3).

[0255] Step 13: Perform time-frequency transformation on the third sequence to obtain n subcarriers.

[0256] In a possible design of this embodiment, time-frequency transform, i.e., DFT, refers to the process of transforming a sequence (the third sequence) in the time domain into frequency domain data of a plurality of sampling points. The frequency domain data after the time-frequency transform is modulated onto at least one subcarrier, such as n subcarriers. Wherein, n is the number of elements of the third sequence, and n is a positive integer multiple of m. The value of n can be {2, 4, 6, 8, 12, 16, 24, 36, 48, 60, 72} or other positive integers. In this example, the value of n is 12.

[0257] Step 14: Perform inverse time-frequency transform on the n subcarriers to generate a first wake-up signal.

[0258] In a possible design of this embodiment, the n subcarrier signals are transformed through an Inverse Fast Fourier Transformation (IFFT) to generate a first wake-up signal. The waveform of the first wake-up signal in the time domain is represented by a first waveform 610 .

[0259] In a possible design of this embodiment, the n subcarrier signals may be multiplexed with other NR signals before performing IFFT, and the orthogonal frequency division multiplexing (OFDM) symbol length of the other NR signals is a positive integer multiple of the chip length of the first wake-up signal. The chip length of the first wake-up signal is the length of each symbol, such as the length of symbol "1" or symbol "0" in the first wake-up signal in FIG6 .

[0260] By performing DFT on the third sequence, the OFDM symbol length of other NR signals is a positive integer multiple of the chip length of the first wake-up signal, so that one OFDM symbol can transmit multiple chip information.

[0261] Modulation mode 2: The first wake-up signal is generated by at least one subcarrier through inverse Fourier transform, and at least one subcarrier is a subcarrier mapped to the third sequence.

[0262] In a possible design of this embodiment, the first sequence is used to indicate first information, and the second sequence is used to indicate second information. The first information is associated with whether to wake up the second receiver, and the second information is associated with the cell corresponding to the first wake-up signal.

[0263] In a possible design of this embodiment, the first wake-up signal is generated based on a third sequence, and the third sequence is a sequence generated based on the first sequence and the second sequence.

[0264] In a possible design of this embodiment, FIG7 shows a schematic diagram of modulating a first wake-up signal provided by an exemplary embodiment of the present application. The steps of modulating the first wake-up signal are as follows:

[0265] Step 21: Obtain the first sequence.

[0266] In a possible design of this embodiment, the first sequence is any one of the following: an original sequence that does not require encoding; an original sequence before encoding; an encoded sequence after the original sequence is encoded; or an encoded sequence after at least one level of multi-level encoding is performed on the original sequence.

[0267] Step 22: Multiply the first sequence and the second sequence to generate a third sequence.

[0268] In one possible design of this embodiment, spreading is performed on the first sequence. Spreading refers to repeating each bit or element in the sequence K times, where K is a positive integer greater than 1. Taking spreading as an example, assuming the first sequence is {1, 0, 0, 1} and the spreading factor K = 4, the spreading sequence is {1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1}. This example assumes that the first sequence is not spread.

[0269] In a possible design of this embodiment, the second sequence is a sequence associated with the cell corresponding to the first wake-up signal, including at least one of the following: a complex sequence such as a CAZAC sequence and a ZC sequence; a real sequence such as a PN sequence, a Gold sequence, an M sequence, and a Hadamard sequence.

[0270] In one possible design of this embodiment, the second sequence is {S1(1), S1(2), ..., S1(m)}, where m is the length of the second sequence. For example, if m is 3, the second sequence is {S1(1), S1(2), S1(3)}.

[0271] In a possible design of this embodiment, the third sequence is a sequence generated by multiplying the first sequence and the second sequence, for example, {S1(1), S1(2), S1(3), 0, 0, 0, 0, 0, 0, S1(1), S1(2), S1(3)}, where y(1) corresponds to S1(1), y(2) corresponds to S1(2), y(3) corresponds to S1(3), y(4) corresponds to 0, and so on until y(12) corresponds to S1(3).

[0272] Step 23: Map the third sequence to n subcarriers.

[0273] In a possible design of this embodiment, DFT is not performed on the third sequence, and the third sequence is directly mapped to n subcarriers, where n is the number of elements of the third sequence, n is a positive integer multiple of m, and the value of n can be {2, 4, 6, 8, 12, 16, 24, 36, 48, 60, 72} or other positive integers. In this example, the value of n is 12.

[0274] Step 24: Perform inverse time-frequency transform on the n subcarriers to generate a first wake-up signal.

[0275] In a possible design of this embodiment, n subcarrier signals are processed through IFFT to generate a first wake-up signal. The waveform of the first wake-up signal in the time domain is represented by a second waveform 710 .

[0276] In one possible design of this embodiment, the n subcarrier signals may be multiplexed with other NR signals before performing IFFT, and the OFDM symbol length of the other NR signals is equal to the chip length of the first wake-up signal. The chip length of the first wake-up signal is the length of each symbol, for example, the length of symbol "1" or symbol "0" in the first wake-up signal in FIG7 .

[0277] By not performing DFT or other pre-transformations on the third sequence, the OFDM symbol length of other NR signals is equal to the chip length of the first wake-up signal, and the first wake-up signal is more compatible with other NR signals (OFDM signals).

[0278] In one possible design of this embodiment, multiple candidate sequences are pre-set for the second sequence, each candidate sequence corresponds to its own sequence identifier (ID), and each candidate sequence corresponds to one or more cells, or in other words, each candidate sequence corresponds to one or more cell IDs. The cell corresponding to the first wake-up signal is the first cell, and the association method of the sequence ID of the second sequence and the cell ID of the first cell includes:

[0279] The sequence ID is a value obtained by performing a modulo operation on the cell ID and the total sequence number, where the total sequence number is the total number of cell IDs.

[0280] For example, sequence ID = cell ID mod X, where X is the total number of sequences. In this case, the cell ID is equal to the selected sequence ID. If there are 20 cells (cell IDs are 0-19), the cell ID is divided by 20 to obtain a remainder, which is a value between 0 and 19. If this remainder is 8, the sequence with sequence ID 8 is selected.

[0281] Optionally, the total number of sequences is the number of sequences associated with the indicated cell ID, and these sequences include the second sequence.

[0282] Exemplarily, sequence ID = cell ID mod X, where X is the total number of sequences. In this case, the cell ID is equal to the selected sequence ID. Given 128 cells (cell IDs 0-127) and 20 sequences associated with the indicated cell ID (sequence IDs 0-19), the cell ID is divided by 20 to obtain a remainder, which is a value between 0 and 19. If this remainder is 8, the sequence with sequence ID 8 is selected.

[0283] There may be other ways to associate the sequence ID of the second sequence with the cell ID of the first cell, which is not limited in the embodiment of the present application. By associating different sequence IDs with cell IDs, the needs for sequence IDs and cell IDs in different scenarios can be met.

[0284] In a possible design of this embodiment, the first wake-up signal further carries the ID information of the target terminal device. In the case where the first wake-up signal carries the ID information of the target terminal device, the first wake-up signal is received by the target terminal device.

[0285] In one possible design of this embodiment, the first wake-up signal further carries group ID information of the target terminal device group. When the first wake-up signal carries the group ID information of the target terminal device group, all or some of the terminal devices in the target terminal device group receive the first wake-up signal.

[0286] In a possible design of this embodiment, the awakening of the terminal device is indicated by ID information or group ID information, or the awakening of the terminal device is indicated by mapping different ID information or group ID information into a bit map.

[0287] This embodiment is described by taking one sending module 1010 as an example, and the number of sending modules 1010 is not limited.

[0288] For an introduction to the functions of the sending module 1010 , please refer to the content of step 410 in the embodiment of FIG. 4 .

[0289] FIG11 shows a block diagram of a wake-up signal receiving apparatus provided by an exemplary embodiment of the present application. The apparatus can be implemented as a terminal device, or as a part of a terminal device, through software or hardware, or a combination of both. The apparatus includes a first receiver and a second receiver. The power consumption of the first receiver is less than that of the second receiver. The apparatus includes:

[0290] The receiving module 1110 is configured to receive a first wake-up signal through a first receiver;

[0291] The first wake-up signal is used to indicate first information and second information, the first information is associated with whether to wake up the second receiver, and the second information is associated with the cell corresponding to the first wake-up signal.

[0292] In a possible design of this embodiment, the detection module 1120 is used to start detection of the control channel based on the first wake-up signal; wherein the detection of the control channel includes: at least one of: DRX detection, paging detection, and PDCCH detection.

[0293] In a possible design of this embodiment, the detection module 1120 is used to detect the signal quality of the first wake-up signal. The signal quality is determined by the signal-to-noise ratio (SINR) or the signal strength. SINR refers to the ratio of signal to noise, usually expressed in decibels (dB). When the signal-to-noise ratio is large, it indicates less noise and better signal quality; when the signal-to-noise ratio is small, it indicates more noise and poor signal quality. Signal strength refers to the strength or power level of the received signal, usually expressed in decibel milliwatts (dBm). When the signal strength is large, it indicates high signal strength; when the signal strength is small, it indicates low signal strength.

[0294] In one possible design of this embodiment, when the signal quality of the first wake-up signal is greater than the first threshold, the detection module 1120 is configured to initiate detection of the control channel based on the time domain resources and frequency domain resources associated with the first information;

[0295] In a case where the signal quality of the first wake-up signal is less than a first threshold, detection of the control channel is initiated.

[0296] In a possible design of this embodiment, the first threshold is a preset threshold or a threshold configured by the network device.

[0297] In a possible design of this embodiment, when the signal quality of the first wake-up signal is equal to the first threshold, the detection module 1120 is used to start the detection of the control channel based on the time domain resources and frequency domain resources associated with the first information; or, directly start the detection of the control channel.

[0298] Exemplarily, the first threshold is -60dBm. When the signal strength of the first wake-up signal is -50dBm or greater than -60dBm, the detection of the control channel is initiated based on the time domain resources and frequency domain resources associated with the first information. As shown in Figure 5, the time when the first wake-up signal is received is time T0, and time T1 to time T2 are the first time slot after the first wake-up signal is received. The first time slot is the time domain resource associated with the first information. At the start of the first time slot, the detection of the control channel is initiated in the frequency domain resource indicated by the CORESET. The frequency domain resource indicated by the CORESET is the frequency domain resource associated with the first information.

[0299] When the signal strength of the first wake-up signal is -70 dBm and is less than -60 dBm, detection of the control channel is directly started.

[0300] In a possible design of this embodiment, the first wake-up signal is a signal received by the first receiver, or a signal supported by the first receiver.

[0301] In one possible design of this embodiment, the first wake-up signal is a signal obtained through two layers of modulation. The first layer of modulation is performed based on the first information to obtain an intermediate signal; the second layer of modulation is performed on the intermediate signal based on the second information to obtain the first wake-up signal. The first wake-up signal obtained through multi-layer modulation can increase the frequency response at multiple subcarrier positions and achieve a more even distribution of the energy spectrum. This increases the robustness of the first wake-up signal, thereby increasing its coverage range.

[0302] In a possible design of this embodiment, whether the first wake-up signal is received is used to indicate whether to wake up the second receiver of the device to start detection of the control channel; wherein the detection of the control channel includes at least one of the following: DRX detection, paging detection, and PDCCH detection.

[0303] In a possible design of this embodiment, when the first wake-up signal is received, it indicates that the second receiver of the device is woken up to start the detection of the control channel. When the first wake-up signal is not received, it indicates that the second receiver of the device is not needed and the detection of the control channel is not started.

[0304] The generation methods of the third sequence include: generation method 1 and generation method 2. Different embodiments may use any one of the two generation methods.

[0305] Generation method 1:

[0306] In a possible design of this embodiment, the first wake-up signal is generated based on a third sequence, and the third sequence is a sequence generated based on the first sequence and the second sequence; wherein the first sequence is used to indicate the first information, and the second sequence is used to indicate the second information.

[0307] In a possible design of this embodiment, the second sequence is a sequence associated with the cell corresponding to the first wake-up signal, and includes at least one of the following:

[0308] Complex sequences such as Constant Amplitude Zero Auto Correlation (CAZAC) sequence and ZC (Zaddoff Chu) sequence; real sequences such as Pseudo-Noise (PN) sequence, Gold sequence, M sequence, and Hadamard sequence.

[0309] Exemplarily, the first sequence is {1, 0, 0, 1}, used to indicate waking up the second receiver, and the second sequence is {S1, S2, S3}, used to indicate a cell corresponding to the first wake-up signal, for example, cell 1;

[0310] Alternatively, the first sequence is {0, 0, 0, 1}, which is used to indicate not waking up the second receiver, and the second sequence is {S1, S2}, which is used to indicate a cell corresponding to the first wake-up signal, for example, cell 2.

[0311] By using the first sequence to indicate the first information and the second sequence to indicate the second information, the device can obtain cell-related information and information for waking up the second receiver, thereby reducing interference between cells.

[0312] Generation method 2:

[0313] In a possible design of this embodiment, the first wake-up signal is generated based on a third sequence, and the third sequence is a sequence generated based on the first sequence and the second sequence; wherein the second sequence is used to indicate the first information and the second information.

[0314] For example, the first sequence is {1,0}, which is used to indicate waking up the second receiver, and the second sequence is {S 10 ,S 20 ,S 30}, used to indicate waking up the second receiver and the cell corresponding to the first wake-up signal, such as cell 1;

[0315] Alternatively, the first sequence is {0,1}, used to indicate other information, and the second sequence is {S 11 ,S 21 ,S 31}, used to indicate waking up the second receiver and the cell corresponding to the first wake-up signal, such as cell 2.

[0316] The second sequence is used to indicate the first information and the second information. The device can obtain cell-related information and information for waking up the second receiver from the second sequence. The indication of the first information and the second information can be completed without the first sequence. The first sequence can be used to indicate other information.

[0317] In a possible design of this embodiment, the first sequence is used to indicate the first information. For example, the first sequence is {1, 0}, which is used to indicate waking up the second receiver.

[0318] The second sequence is used to indicate the first information and the second information at the same time, and the first sequence is used to indicate the first information, which is equivalent to double indication of the first information, thereby improving the reliability of obtaining the information for waking up the second receiver.

[0319] In a possible design of this embodiment, the third sequence is a sequence generated by multiplying the first sequence and the second sequence; or, the third sequence is a sequence generated by modulating the first sequence and the second sequence; or, the third sequence is a sequence generated by multiplying the fourth sequence and the second sequence, where the fourth sequence is obtained by spreading the first sequence; or, the third sequence is a sequence generated by modulating the fourth sequence and the second sequence.

[0320] Optionally, the first sequence is not spread, and the first sequence and the second sequence are multiplied (or modulated) to generate a third sequence; or the first sequence is spread to obtain a fourth sequence, and the fourth sequence and the second sequence are multiplied (or modulated) to generate a third sequence.

[0321] In a possible design of this embodiment, bits with a value of 0 in the first sequence or the fourth sequence are not multiplied with elements in the second sequence.

[0322] In a possible design of this embodiment, bits with a value of 1 in the first sequence are multiplied by elements in the second sequence to generate a third sequence.

[0323] In a possible design of this embodiment, bits with a value of 1 in the fourth sequence are multiplied by elements in the second sequence to generate a third sequence.

[0324] Exemplarily, the first sequence is {1,1}, the second sequence is {S1,S2}, and the third sequence is a sequence generated by multiplying the first sequence and the second sequence. The bits with a value of 1 in the first sequence are multiplied by the elements in the second sequence to generate the third sequence, i.e., {S1,S2,S1,S2}.

[0325] In a possible design of this embodiment, the i-th bit with a value of 1 in the first sequence is multiplied by the i-th element in the second sequence to generate a third sequence. The number of bits with a value of 1 in the first sequence is equal to the number of elements in the second sequence. The second sequence includes x elements, and i is a positive integer not greater than x.

[0326] In a possible design of this embodiment, the i-th bit in the fourth sequence with a value of 1 is multiplied by the i-th element in the second sequence to generate a third sequence. The number of bits with a value of 1 in the first sequence is equal to the number of elements in the second sequence. The second sequence includes x elements, and i is a positive integer not greater than x.

[0327] Exemplarily, the first sequence is {1,0}, and when the spreading factor is 4, the spread is the fourth sequence {1,1,1,1,0,0,0,0}, the second sequence is {S1,S2,S3,S4}, and the third sequence is a sequence generated by multiplying the fourth sequence and the second sequence. The i-th bit with a value of 1 in the fourth sequence is multiplied by the i-th element in the second sequence to generate the third sequence, i.e., {S1,S2,S3,S4,0,0,0,0}.

[0328] In a possible design of this embodiment, the second sequence includes x elements, and the k-th bit in the first sequence is multiplied by the i-th element in the second sequence to generate a third sequence, where i=k mod x, i is a positive integer not greater than x, and the first sequence includes y bits, and k is a positive integer not greater than y.

[0329] In a possible design of this embodiment, the second sequence includes x elements, and the k-th bit in the fourth sequence is multiplied by the i-th element in the second sequence to generate a third sequence, where i=k mod x, i is a positive integer not greater than x, and the fourth sequence includes z bits, k is a positive integer not greater than z.

[0330] Exemplarily, the second sequence is {S1, S2, S3} including 3 elements, the first sequence is {1, 1, 1, 0, 0, 0, 1, 1, 1, 0, 0, 0}, and the k-th bit in the first sequence is multiplied by the i-th element in the second sequence to generate the third sequence, i.e., {S1, S2, S3, 0, 0, 0, S1, S2, S3, 0, 0, 0}.

[0331] The first wake-up signal is generated based on the third sequence. The third sequence is generated by multiplying the first sequence (or the fourth sequence) by the second sequence, so that the first wake-up signal can be used to indicate the first information and the second information.

[0332] In a possible design of this embodiment, the spreading factor of the first sequence is determined based on the length of the second sequence.

[0333] In a possible design of this embodiment, the value of the spreading factor includes at least one of the following: the length value of the second sequence; the quotient of the length value of the second sequence and the first number; wherein the first number is the number of bits in the first sequence whose value is 1.

[0334] For example, the first sequence is {1, 0, 1, 0}, the first number is 2, the second sequence is {S1, S2, S3, S4, S5, S6}, and the length of the second sequence is 6. The spreading factor can be 6 or 3, that is, the quotient of 6 and 2. The spreading factor may have other values, which are not limited in this embodiment of the present application.

[0335] In one possible design of this embodiment, the first wake-up signal includes two modulation modes: modulation mode 1 and modulation mode 2. Different embodiments may use either modulation mode. The third sequence in modulation mode 1 is Fourier transformed, while the third sequence in modulation mode 2 is not Fourier transformed.

[0336] Modulation mode 1: The first wake-up signal is generated by at least one subcarrier through inverse Fourier transform, and at least one subcarrier is a subcarrier mapped by the third sequence after Fourier transform.

[0337] Modulation mode 2: The first wake-up signal is generated by at least one subcarrier through inverse Fourier transform, and at least one subcarrier is a subcarrier mapped to the third sequence.

[0338] In a possible design of this embodiment, the steps of demodulating the first wake-up signal are as follows:

[0339] Step 31: Demodulate the first wake-up signal into a third sequence through a demodulator.

[0340] In one possible design of this embodiment, the device demodulates the first wake-up signal having, for example, the first waveform 610 in the embodiment of FIG. 6 into a third sequence, for example, the third sequence is {S1(1), S1(2), S1(3), 0, 0, 0, 0, 0, S1(1), S1(2), S1(3)}.

[0341] Step 32: Determine the second information carried by the third sequence.

[0342] In a possible design of this embodiment, the second information is associated with the cell corresponding to the first wake-up signal, and the second sequence is used to indicate the second information, including at least one of the following: complex sequences such as CAZAC sequence and ZC sequence; real sequences such as PN sequence, Gold sequence, M sequence, and Hadamard sequence.

[0343] Exemplarily, when the third sequence is {S1(1), S1(2), S1(3), 0, 0, 0, 0, 0, 0, S1(1), S1(2), S1(3)}, the second sequence is determined to be {S1(1), S1(2), S1(3)}.

[0344] Step 33: Based on the second information, determine the first information carried by the third sequence.

[0345] In a possible design of this embodiment, the first information is associated with whether to wake up the second receiver, and the first sequence is used to indicate the first information.

[0346] In a possible design of this embodiment, the third sequence is a sequence generated by multiplying the first sequence and the second sequence. When the third sequence and the second sequence are known, the first sequence can be obtained.

[0347] For example, when the third sequence is {S1(1), S1(2), S1(3), 0, 0, 0, 0, 0, 0, S1(1), S1(2), S1(3)} and the second sequence is {S1(1), S1(2), S1(3)}, the first sequence is {1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1}.

[0348] In a possible design of this embodiment, the first sequence is spread spectrum processed into a fourth sequence, and the third sequence is a sequence generated by multiplying the fourth sequence and the second sequence. Therefore, the fourth sequence needs to be downsampled. For example, when the fourth sequence is {1,1,1,1,0,0,0,0,0,0,0,0,1,1,1,1}, downsampling is performed to obtain a first sequence of {1,0,0,1}, which is used to indicate the wake-up of the second receiver.

[0349] In a possible design of this embodiment, the first information is associated with whether to wake up the second receiver, and the second sequence is used to indicate the first information and the second information.

[0350] Exemplarily, the third sequence is {S 10 ,S 20 ,S 30 ,0,0,0}, the second sequence is {S 10 ,S 20 ,S 30}, used to indicate waking up the second receiver and the cell corresponding to the first wake-up signal, such as cell 1.

[0351] In one possible design of this embodiment, multiple candidate sequences are pre-set for the second sequence, each candidate sequence corresponds to its own sequence identifier (ID), and each candidate sequence corresponds to one or more cells, or in other words, each candidate sequence corresponds to one or more cell IDs. The cell corresponding to the first wake-up signal is the first cell, and the association method of the sequence ID of the second sequence and the cell ID of the first cell includes:

[0352] The sequence ID is a value obtained by performing a modulo operation on the cell ID and the total sequence number, where the total sequence number is the total number of cell IDs.

[0353] For example, sequence ID = cell ID mod X, where X is the total number of sequences. In this case, the cell ID is equal to the selected sequence ID. If there are 20 cells (cell IDs are 0-19), the cell ID is divided by 20 to obtain a remainder, which is a value between 0 and 19. If this remainder is 8, the sequence with sequence ID 8 is selected.

[0354] Optionally, the total number of sequences is the number of sequences associated with the indicated cell ID, and these sequences include the second sequence.

[0355] Exemplarily, sequence ID = cell ID mod X, where X is the total number of sequences. In this case, the cell ID is equal to the selected sequence ID. Given 128 cells (cell IDs 0-127) and 20 sequences associated with the indicated cell ID (sequence IDs 0-19), the cell ID is divided by 20 to obtain a remainder, which is a value between 0 and 19. If this remainder is 8, the sequence with sequence ID 8 is selected.

[0356] There may be other ways to associate the sequence ID of the second sequence with the cell ID of the first cell, which is not limited in the embodiment of the present application. By associating different sequence IDs with cell IDs, the needs for sequence IDs and cell IDs in different scenarios can be met.

[0357] This embodiment is described by taking one receiving module 1110 and one detecting module 1120 as an example, and the number of the receiving modules 1110 and the detecting modules 1120 is not limited.

[0358] For an introduction to the functions of the receiving module 1110 , please refer to the content of step 810 in the embodiment of FIG8 .

[0359] For an introduction to the functions of the detection module 1120 , please refer to the content of step 810 in the embodiment of FIG8 .

[0360] FIG12 shows a schematic structural diagram of a terminal device or network device 1200 provided by an exemplary embodiment of the present application, including: a processor 1201 , a receiver 1202 , a transmitter 1203 , a memory 1204 and a bus 1205 .

[0361] The processor 1201 includes one or more processing cores, and the processor 1201 executes various functional applications and information processing by running software programs and modules. In some embodiments, the processor 1201 can be used to implement the functions and steps of the detection module 1120 described above.

[0362] Receiver 1202 and transmitter 1203 can be implemented as a transceiver component, which can be a communication chip and is referred to as a transceiver. In some embodiments, receiver 1202 includes a first receiver and a second receiver, where the first receiver consumes less power than the second receiver and can be used to implement the functions and steps of the aforementioned receiving module 1110. In some embodiments, transmitter 1203 can be used to implement the functions and steps of the aforementioned sending module 1010.

[0363] The memory 1204 is connected to the processor 1201 via a bus 1205 .

[0364] The memory 1204 may be used to store at least one instruction, and the processor 1201 may be used to execute the at least one instruction to implement each step in the above method embodiment.

[0365] In addition, the memory 1204 can be implemented by any type of volatile or non-volatile storage device or a combination thereof. Volatile or non-volatile storage devices include but are not limited to: magnetic disks or optical disks, electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), static random access memory (SRAM), read-only memory (ROM), magnetic memory, flash memory, and programmable read-only memory (PROM).

[0366] In some embodiments, the receiver 1202 receives signals / data independently, or the processor 1201 controls the receiver 1202 to receive signals / data, or the processor 1201 requests the receiver 1202 to receive signals / data, or the processor 1201 cooperates with the receiver 1202 to receive signals / data.

[0367] In some embodiments, the transmitter 1203 independently sends signals / data, or the processor 1201 controls the transmitter 1203 to send signals / data, or the processor 1201 requests the transmitter 1203 to send signals / data, or the processor 1201 cooperates with the transmitter 1203 to send signals / data.

[0368] In an exemplary embodiment, a computer-readable storage medium is also provided, in which at least one program is stored. The at least one program is loaded and executed by a processor to implement the wake-up signal receiving method or the wake-up signal sending method provided in the above-mentioned method embodiments.

[0369] In an exemplary embodiment, a chip is also provided, which includes a programmable logic circuit and / or program instructions. When the chip is running on a terminal device or a network device, it is used to implement the wake-up signal receiving method or the wake-up signal sending method provided in the above-mentioned method embodiments.

[0370] In an exemplary embodiment, a computer program product or computer program is also provided. The computer program product or computer program includes computer instructions, and the computer instructions are stored in a computer-readable storage medium. The processor obtains the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions to implement the wake-up signal receiving method or the wake-up signal sending method provided in the above-mentioned method embodiments.

[0371] Those skilled in the art will understand that all or part of the steps to implement the above embodiments may be accomplished by hardware, or may be accomplished by a program instructing the relevant hardware, and the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a disk, or an optical disk, etc.

[0372] The above are only optional embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A method for receiving a wake-up signal, characterized in that The method is executed by a terminal device, which includes a first receiver and a second receiver, and the power consumption of the first receiver is less than that of the second receiver. The method includes: Receiving a first wake-up signal through the first receiver; Wherein, the first wake-up signal is used to indicate first information and second information, the first information is associated with whether to wake up the second receiver, and the second information is associated with the cell corresponding to the first wake-up signal.

2. The method according to claim 1, wherein The first wake-up signal is generated based on a third sequence, and the third sequence is a sequence generated based on a first sequence and a second sequence; Wherein, the first sequence is used to indicate the first information, and the second sequence is used to indicate the second information.

3. The method according to claim 1, characterized in that, The first wake-up signal is generated based on a third sequence, and the third sequence is a sequence generated based on a first sequence and a second sequence; Wherein, the second sequence is used to indicate the first information and the second information.

4. The method according to claim 3, wherein The first sequence is used to indicate the first information.

5. The method according to any one of claims 2 to 4, characterized in that The third sequence is a sequence generated by multiplying the first sequence and the second sequence; or, the third sequence is a sequence generated by modulating the first sequence and the second sequence; or, the third sequence is a sequence generated by multiplying a fourth sequence and the second sequence, and the fourth sequence is obtained by spreading the first sequence; or, the third sequence is a sequence generated by modulating the fourth sequence and the second sequence.

6. The method according to claim 5, characterized in that, The spreading factor of the first sequence is determined based on the length of the second sequence.

7. The method according to claim 6, wherein The value of the spreading factor includes at least one of the following: The length value of the second sequence; the quotient value of the length value of the second sequence and a first quantity; Wherein, the first quantity is the number of bits with a value of 1 in the first sequence.

8. The method according to any one of claims 2 to 7, characterized in that, The cell corresponding to the first wake-up signal is a first cell. The association manner between the sequence identifier ID of the second sequence and the cell ID of the first cell includes: The sequence ID is the value obtained by performing a modulo operation on the cell ID with respect to the total number of sequences, and the total number of sequences is the total number of cell IDs.

9. The method according to any one of claims 2 to 8, characterized in that The first wake-up signal is generated by performing an inverse Fourier transform on at least one subcarrier, and the at least one subcarrier is the subcarrier mapped after the third sequence undergoes a Fourier transform.

10. The method according to any one of claims 2 to 8, characterized in that The first wake-up signal is generated by performing an inverse Fourier transform on at least one subcarrier, and the at least one subcarrier is the subcarrier mapped by the third sequence.

11. According to the method described in any one of claims 1 to 10, characterized in that, The method further includes: Based on the first wake-up signal, starting the detection of a control channel; Wherein, the detection of the control channel includes at least one of: discontinuous reception (DRX) detection, paging detection, and physical downlink control channel (PDCCH) detection.

12. The method according to claim 11, wherein, The starting the detection of the control channel based on the first wake-up signal includes: When the signal quality of the first wake-up signal is greater than a first threshold, based on the time-domain resources and frequency-domain resources associated with the first information, start detecting the control channel; When the signal quality of the first wake-up signal is less than the first threshold, start detecting the control channel.

13. A method for receiving a wake-up signal, characterized in that, The method is executed by a network device, and the method includes: Sending a first wake-up signal; Wherein, the first wake-up signal is used to indicate first information and second information, the first information is associated with whether to wake up a second receiver of a terminal device, the terminal device includes a first receiver and the second receiver, the power consumption of the first receiver is less than that of the second receiver, and the second information is associated with a cell corresponding to the first wake-up signal.

14. The method according to claim 13, wherein The first wake-up signal is generated based on a third sequence, and the third sequence is a sequence generated based on a first sequence and a second sequence; Wherein, the first sequence is used to indicate the first information, and the second sequence is used to indicate the second information.

15. The method according to claim 13, wherein The first wake-up signal is generated based on a third sequence, and the third sequence is a sequence generated based on a first sequence and a second sequence; Wherein, the second sequence is used to indicate the first information and the second information.

16. The method according to claim 15, wherein The first sequence is used to indicate the first information.

17. The method according to any one of claims 14 to 16, wherein The third sequence is a sequence generated by multiplying the first sequence and the second sequence; or, the third sequence is a sequence generated by modulating the first sequence and the second sequence; or, the third sequence is a sequence generated by multiplying a fourth sequence and the second sequence, and the fourth sequence is obtained by spreading the first sequence; or, the third sequence is a sequence generated by modulating the fourth sequence and the second sequence.

18. The method according to claim 17, characterized in that, The spreading factor of the first sequence is determined based on the length of the second sequence.

19. The method according to claim 18, wherein The value of the spreading factor includes at least one of the following: The length value of the second sequence; the quotient value of the length value of the second sequence and a first quantity; Wherein, the first quantity is the number of bits with a value of 1 in the first sequence.

20. The method according to any one of claims 14 to 19, characterized in that The cell corresponding to the first wake-up signal is a first cell, and the association manner between the sequence identifier ID of the second sequence and the cell ID of the first cell includes: The sequence ID is a value obtained by performing a modulo operation on the cell ID with respect to the total number of sequences, and the total number of sequences is the total number of cell IDs.

21. The method according to any one of claims 14 to 20, wherein The first wake-up signal is generated by performing an inverse Fourier transform on at least one subcarrier, and the at least one subcarrier is a subcarrier mapped after performing a Fourier transform on the third sequence.

22. The method according to any one of claims 14 to 20, wherein The first wake-up signal is generated by performing an inverse Fourier transform on at least one subcarrier, and the at least one subcarrier is a subcarrier mapped by the third sequence.

23. A receiving device for a wake-up signal, characterized in that, The device includes a first receiver and a second receiver, the power consumption of the first receiver is less than that of the second receiver, and the device includes: A receiving module, configured to receive a first wake-up signal through the first receiver; Wherein, the first wake-up signal is used to indicate first information and second information, the first information is associated with whether to wake up the second receiver, and the second information is associated with the cell corresponding to the first wake-up signal.

24. A transmitting device for a wake-up signal, characterized in that, The device includes: A sending module, configured to send a first wake-up signal; Wherein, the first wake-up signal is used to indicate first information and second information, the first information is associated with whether to wake up the second receiver of the terminal device, the terminal device includes a first receiver and the second receiver, the power consumption of the first receiver is less than that of the second receiver, and the second information is associated with the cell corresponding to the first wake-up signal.

25. A terminal device, characterized in that, The terminal device includes: A processor; a transceiver connected to the processor; a memory for storing executable instructions of the processor; Wherein, the processor is configured to load and execute the executable instructions to implement the method for receiving a wake-up signal according to any one of claims 1 to 12.

26. A network device, characterized in that, The network device includes: A processor; a transceiver connected to the processor; a memory for storing executable instructions of the processor; Wherein, the processor is configured to load and execute the executable instructions to implement the method for sending a wake-up signal according to any one of claims 13 to 22.

27. A computer-readable storage medium, characterized in that, At least one program is stored in the computer-readable storage medium, and the at least one program is loaded and executed by a processor to implement the method for receiving a wake-up signal according to any one of claims 1 to 12, or the method for sending a wake-up signal according to any one of claims 13 to 22.

28. A chip, characterized in that, The chip includes programmable logic circuits and / or program instructions, and when the chip runs on a terminal device or a network device, it is used to implement the method for receiving a wake-up signal according to any one of claims 1 to 12 above, or the method for sending a wake-up signal according to any one of claims 13 to 22.

29. A computer program product, characterized in that, The computer program product includes computer instructions, the computer instructions are stored in a computer-readable storage medium, the processor obtains the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions to implement the method for receiving a wake-up signal according to any one of claims 1 to 12, or the method for sending a wake-up signal according to any one of claims 13 to 22.

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