Communication method and communication device

Abstract

Provided are a communication method and a communication device. The method comprises: a terminal device receives a first signal and / or a second signal sent by a network device, wherein both the first signal and the second signal are used for carrying wake-up information of the terminal device, and the first signal and the second signal have different waveforms. By using the method, a terminal device can receive wake-up information by means of a first signal or a second signal. Signals having different waveforms have different coverages, so that terminal devices in different ranges can be woken up, thereby improving the wake-up coverage of an entire system.

Description

Communication methods and communication equipment Technical Field

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

[0002] In some communication systems, terminal devices can receive signals carrying wake-up information. This wake-up information can be used to wake up the terminal device. Improving the wake-up coverage of the entire system is a technical problem that needs to be solved. Summary of the Invention

[0003] This application provides a communication method and a communication device. The various aspects covered by this application are described below.

[0004] In a first aspect, a communication method is provided, the method comprising: a terminal device receiving a first signal and / or a second signal sent by a network device, wherein the first signal and the second signal are both used to carry wake-up information of the terminal device, and the waveforms of the first signal and the second signal are different.

[0005] Secondly, a communication method is provided, the method comprising: a network device sending a first signal and a second signal, both the first signal and the second signal being used to carry wake-up information of a terminal device, and the waveforms of the first signal and the second signal being different.

[0006] Thirdly, a communication device is provided, which is a terminal device. The terminal device includes a receiving unit for receiving a first signal and / or a second signal sent by a network device. The first signal and the second signal are both used to carry wake-up information of the terminal device, and the waveforms of the first signal and the second signal are different.

[0007] Fourthly, a communication device is provided, which is a network device. The network device includes a transmitting unit for transmitting a first signal and a second signal, both of which are used to carry wake-up information of a terminal device, and the waveforms of the first signal and the second signal are different.

[0008] Fifthly, a communication device is provided, including a transceiver, a memory, and a processor, wherein the memory is used to store a program, the processor is used to invoke the program in the memory, and to control the transceiver to receive or transmit signals so that the communication device performs the method as described in the first or second aspect.

[0009] A sixth aspect provides an apparatus including a processor for calling a program from a memory to cause the apparatus to perform the method as described in the first or second aspect.

[0010] In a seventh aspect, a chip is provided, including a processor for calling a program from memory, causing a device on which the chip is mounted to perform the method as described in the first or second aspect.

[0011] Eighthly, a computer-readable storage medium is provided having a program stored thereon that causes a computer to perform the method as described in the first or second aspect.

[0012] A ninth aspect provides a computer program product, characterized in that it includes a program that causes a computer to perform the method as described in the first or second aspect.

[0013] In a tenth aspect, a computer program is provided that causes a computer to perform the method as described in the first or second aspect.

[0014] In this embodiment, the terminal device can receive wake-up information via a first signal or a second signal, the waveforms of which are different. Since signals with different waveforms have different coverage ranges, terminal devices located within different ranges can be woken up, thereby improving the wake-up coverage of the entire system. Attached Figure Description

[0015] Figure 1 is a schematic diagram of the communication system used in the embodiments of this application.

[0016] Figure 2 is a system block diagram of a terminal device based on a wake-up receiver (WUR) in the related technology provided in the embodiments of this application.

[0017] Figure 3 is an example diagram of the low-power wake-up signal generation method in the related technology provided in the embodiments of this application.

[0018] Figure 4 is an example diagram of modulation based on orthogonal frequency division multiplexing (OFDM) sequences in the related technology provided in the embodiments of this application.

[0019] Figure 5 is an example diagram of Manchester encoding in the related technology provided in the embodiments of this application.

[0020] Figure 6 is a schematic flowchart of the communication method provided in an embodiment of this application.

[0021] Figure 7 is an example diagram of mapping OFDM sequences to first-class symbols provided in an embodiment of this application.

[0022] Figure 8 is another example diagram of mapping OFDM sequences to first-class symbols provided in an embodiment of this application.

[0023] Figure 9 is another example diagram of mapping OFDM sequences to first-class symbols provided in an embodiment of this application.

[0024] Figure 10 is a schematic diagram of the structure of the communication device provided in an embodiment of this application.

[0025] Figure 11 is a schematic diagram of the structure of a communication device provided in another embodiment of this application.

[0026] Figure 12 is a schematic diagram of the structure of the communication device provided in the embodiment of this application. Detailed Implementation

[0027] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0028] Communication system

[0029] Figure 1 is a system architecture example diagram of a wireless communication system 100 applicable to embodiments of this application. The wireless communication system 100 may include a network device 110 and a terminal device 120. The network device 110 may be a device that communicates with the terminal device 120. The network device 110 can provide network coverage for a specific geographical area and can communicate with the terminal device 120 located within that coverage area. The terminal device 120 can access a network (such as a wireless network) through the network device 110. Optionally, the wireless communication system 100 may also include other network entities such as a network controller and a mobility management entity; this embodiment of the application does not limit this.

[0030] It should be understood that the technical solutions of the embodiments of this application can be applied to various communication systems, such as 5G systems or new radio (NR), long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, etc. The technical solutions provided in this application can also be applied to future communication systems, such as sixth-generation mobile communication systems, satellite communication systems, and so on.

[0031] The terminal device in this application embodiment can also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device. The terminal device in this application embodiment can be a device that provides voice and / or data connectivity to a user, and can be used to connect people, objects, and machines, such as a handheld device with wireless connectivity, vehicle-mounted device, etc. The terminal devices in the embodiments of this application can be mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, self-driving, remote medical surgery, smart grids, transportation safety, smart cities, and smart homes, etc. Optionally, the terminal device can act as a base station. For example, the terminal device can act as a scheduling entity, providing sidelink signals between terminal devices in vehicle-to-everything (V2X) or device-to-device (D2D) systems. For instance, cellular phones and cars communicate with each other using sidelink signals. Cellular phones and smart home devices communicate without relaying communication signals through base stations.

[0032] The network device in this application embodiment can be a device for communicating with terminal devices. This network device can be, for example, an access network device or a wireless access network device. For instance, the network device can be a base station. The term "base station" can broadly encompass various names, or be replaced by, the following: NodeB, evolved NodeB (eNB), next-generation NodeB (gNB), relay station, access point, transmitting and receiving point (TRP), transmitting point (TP), home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. A base station can be a macro base station, micro base station, relay node, donor node, or the like, or a combination thereof.

[0033] Terminal devices based on wake-up receivers

[0034] To further reduce power consumption in terminal devices, the 3rd Generation Partnership Project (3GPP) Release 19 standard considers introducing a wake-up receiver to receive wake-up signals. The wake-up receiver can operate in a deeper sleep mode. It features extremely low cost, extremely low complexity, and extremely low power consumption. The wake-up receiver primarily receives wake-up signals using envelope detection. Alternatively, it can use methods similar to traditional receivers. In short, the power consumption of a wake-up receiver can be several orders of magnitude lower than that of a traditional receiver operating in sleep mode. Typically, a traditional receiver consumes more than 100 milliwatts, while a wake-up receiver can consume less than 1 milliwatt.

[0035] The wake-up signal received by the wake-up receiver differs from the modulation scheme and waveform of the signal carried by the physical downlink control channel (PDCCH) as defined in the existing 3GPP NR standard. The wake-up signal may include an envelope signal obtained by amplitude shift keying (ASK) modulation of the carrier signal. Demodulation of the envelope signal is generally performed by a low-power circuit. This low-power circuit can be driven by power provided by the radio frequency signal, and therefore can be passive. Alternatively, the wake-up receiver can be powered by the terminal itself. Regardless of the power supply method, the wake-up receiver can significantly reduce the power consumption of the terminal device compared to traditional receivers. The wake-up receiver can be integrated with the main receiver of the terminal device as an add-on module. Alternatively, the wake-up receiver can function as a standalone wake-up function module of the terminal device.

[0036] Figure 2 shows a system block diagram of a terminal device based on a wake-up receiver. As shown in Figure 2, the wake-up receiver can receive a wake-up signal. When the terminal device needs to activate the main receiver, the network device can send a wake-up signal to the terminal device. The wake-up signal can instruct the wake-up receiver to send wake-up information to the main receiver. The main receiver can switch from a closed state to an activated state in response to receiving the wake-up information from the wake-up receiver. When the terminal device does not need to activate the main receiver, the wake-up receiver may not send a wake-up information to the main receiver. The main receiver can remain in a closed state in response to not receiving a wake-up information from the wake-up receiver.

[0037] A wake-up receiver can be activated at any time by a wake-up signal and receive the wake-up information carried in the signal. The wake-up signal can include the envelope signal obtained by ASK modulation of the carrier signal. For example, in 802.11 technology, the wake-up signal uses on-off keying (OOK) modulation. OOK modulation can also be called binary amplitude shift keying (2ASK). In OOK modulation, the amplitude of the carrier signal can be modulated to non-zero and zero values, where non-zero values ​​correspond to "on" and zero values ​​correspond to "off". "On" and "off" can be used to represent information bits. In other words, information bits can be modulated to "on" or "off". For example, bit "1" can be modulated to "on" and bit "0" to "off".

[0038] Low-power wake-up signal

[0039] Low-power wake-up signals, such as those defined in 3GPP, can be generated by mapping information bits or raw information to specific OFDM subcarriers (SCs). Figure 3 shows an example of generating low-power wake-up signals in related technologies. The uppercase letter D in the upper right corner of Figure 3 represents the number of OOK symbols (bits) transmitted on each OFDM symbol. That is, the duration of one OFDM symbol is equal to the time required to transmit D OOK symbols. The larger the value of D, the smaller the time-domain length of each OOK symbol, and the higher the data rate of the OOK waveform. When D = 4, four OOK symbols can be transmitted on each OFDM symbol. If the OOK symbols are obtained using Manchester encoding, these four OOK symbols can transmit 2 information bits, or 2 bits of raw information. The four OOK symbols can form the following four possible waveform results: "0101", "0110", "1010", and "1001". In addition to the OOK symbols mentioned earlier, to ensure compatibility with NR signals, the final generated OFDM symbols can use the traditional cyclic prefix (CP) appending method. That is, a CP can be appended to the beginning of the OFDM symbol. In Figure 3, this CP corresponds to the portion preceding the first OOK symbol.

[0040] Modulation based on OFDM sequences

[0041] Compared to simple modulations such as OOK modulation, OFDM-based modulation is more complex. The modulation structure based on OFDM sequences can be shown in Figure 4. Referring to Figure 4, a binary sequence (e.g., 1010) can be multiplied by a selected OFDM sequence (e.g., a pseudo-random sequence), and then the sequence in the frequency domain can be transformed to the time domain using the inverse fast fourier transform (IFFT) to obtain the waveform in the time domain.

[0042] Linear encoding method

[0043] Before OOK modulation, binary "1"s and "0"s in the transmitted data can be represented using different codes. Radio Frequency Identification (RFID) systems typically use one or more of the following encoding methods: non-return-to-zero (NRZ) encoding, Manchester encoding, unipolar return-to-zero (unipolar RZ) encoding, differential binary phase (DBP) encoding, and Miller encoding. Encoding binary "1"s and "0"s can be understood as using different pulse signals to represent "0" and "1".

[0044] Manchester encoding

[0045] Figure 5 illustrates an example of Manchester coding in related technologies. Manchester coding can also be called split-phase coding. In Manchester coding, the value of a bit is represented by the level change (rising or falling) over half a bit period within that bit length. A falling bit (negative transition) over half a bit period represents binary "1", and a rising bit (positive transition) over half a bit period represents binary "0". With Manchester coding, a "no change" state within the bit length is not allowed. Therefore, Manchester coding is advantageous for detecting errors in data transmission. Based on the above characteristics of Manchester coding, it can be used for data transmission from electronic tags to readers when using carrier load modulation or backscatter modulation. When multiple electronic tags simultaneously transmit data bits with different values, the received rising and falling edges cancel each other out, resulting in an uninterrupted carrier signal (i.e., the carrier signal "no change") throughout the entire bit length. Since a "no change" state is not allowed, the reader can use this error to determine the specific location of a collision.

[0046] As described above, some terminal devices can receive signals carrying wake-up information (hereinafter referred to as wake-up signals for ease of description). This wake-up information can be used to wake up terminal devices in low-power mode. To further reduce the power consumption of terminal devices, simple modulation methods (such as OOK modulation) can be used to generate wake-up signals. Wake-up signals generated using simple modulation methods can have relatively simple waveforms. Wake-up signals with simple waveforms can be received by wake-up receivers with lower power consumption, thereby further reducing the power consumption of terminal devices.

[0047] However, due to the low sensitivity of low-power wake-up receivers, it may be difficult to wake up the terminal device using a simple waveform wake-up signal when the terminal device is located at the edge of the system's coverage, resulting in a small wake-up coverage area for the system.

[0048] Therefore, how to improve the wake-up coverage of the entire system is a technical problem that needs to be solved.

[0049] To address the aforementioned problems, this application provides a communication method. Using this method, a terminal device can receive wake-up information via a first signal or a second signal, the first and second signals having different waveforms. Since signals with different waveforms have different coverage areas, terminal devices located within different ranges can be woken up, thereby improving the overall wake-up coverage of the system.

[0050] The communication method provided in the embodiments of this application will be described in detail below with reference to Figure 6.

[0051] Figure 6 is a schematic flowchart of a communication method provided in an embodiment of this application. The method in Figure 6 is described from the perspective of a terminal device. The terminal device in Figure 6 can be the terminal device 120 mentioned above. This terminal device can be used to communicate with network devices. This terminal device can be, for example, a UE.

[0052] Referring to Figure 6, the communication method provided in this application embodiment may include the following step S610.

[0053] In step S610, the terminal device receives a first signal and / or a second signal sent by the network device.

[0054] Both the first and second signals here can be used to carry wake-up information for the terminal device. Therefore, the first and second signals can also be called wake-up signals. Wake-up information can be used to indicate whether to wake up the terminal device. "Wake up the terminal device" can be understood as the terminal device switching from a sleep state (or a closed state) to an active state (or an on state). The wake-up information carried in the first signal can be the same as the wake-up information carried in the second signal. For example, when the wake-up information carried in the first signal indicates to wake up the terminal device, the wake-up information carried in the second signal also indicates to wake up the terminal device. As another example, when the wake-up information carried in the first signal indicates not to wake up the terminal device, the wake-up information carried in the second signal also indicates not to wake up the terminal device. Based on the wake-up information, the terminal device can be woken up only when needed, thereby reducing the power consumption of the terminal device.

[0055] The waveform of the first signal can be different from that of the second signal. For example, the first signal can have a simple waveform, while the second signal can have a complex waveform. Here, "simple waveform" can be understood as a waveform obtained through a simple modulation method. Simple modulation methods can include amplitude modulation. Conversely, "complex waveform" can be understood as a waveform obtained through a complex modulation method. Complex modulation methods can include OFDM modulation. Because signals with different waveforms have different coverage areas, the first signal and the second signal can have different coverage areas.

[0056] The terminal device may include a wake-up receiver, through which it can receive either a first signal or a second signal. Whether the terminal device receives the first signal or the second signal may depend on the capability of its wake-up receiver. For example, if the wake-up receiver has limited sensitivity, the terminal device can receive the signal with the simpler waveform of the first or second signal. Conversely, if the wake-up receiver has high sensitivity, the terminal device can receive the signal with the more complex waveform of the first or second signal.

[0057] The first and second signals can be transmitted by the same network device. This network device can belong to the same communication system as the aforementioned terminal devices. In addition to the aforementioned terminal devices, this communication system may also include one or more other terminal devices. The network device can perform one or more of encoding and modulation to obtain the first signal. Similarly, the network device can perform one or more of encoding and modulation to obtain the second signal. To ensure that the first and second signals have different waveforms, the network device can use different modulation methods to generate the first and second signals. Generally speaking, signals with complex waveforms have a wider coverage area than signals with simple waveforms. Therefore, in the edge regions of the system, the more complex waveform signal can be used to wake up the terminal devices.

[0058] As described in step S610, the method provided in this application embodiment can combine a first signal and a second signal with different waveforms to wake up the terminal device. This improves the wake-up coverage of the entire system, thereby enhancing the overall energy efficiency.

[0059] Step S610 mentions that the first signal and the second signal can have different waveforms. To make the waveforms of the first signal and the second signal different, different modulation methods can be used to obtain the first signal and the second signal respectively. In some implementations, amplitude modulation can be used to obtain the first signal. This amplitude modulation can include OOK modulation. When the first signal is obtained using OOK modulation, the first signal is an OOK signal based on amplitude modulation. In some implementations, OFDM modulation can be used to obtain the second signal. In this case, the second signal is a signal based on OFDM modulation.

[0060] Step S610 further mentions that, in order to make the first signal and the second signal have different waveforms, the network device can use different modulation methods to generate the first signal and the second signal. There are multiple ways for the network device to use different modulation methods to generate the first signal and the second signal. This application provides two possible implementation methods.

[0061] In the first implementation, the network device can use different modulation schemes to modulate the wake-up information to generate a first signal and a second signal. In this case, both the first and second signals can be considered to be generated from the wake-up information. In the second implementation, the network device can use one modulation scheme to modulate the wake-up information to generate the first signal, and another modulation scheme to modulate the first signal to generate the second signal. In this case, the second signal can be considered to be a signal generated by modulating the first signal. In both implementations, redundant modulation is used to generate two signals with different waveforms. In the second implementation, multiple layers of signals are generated, where the second layer signal is generated based on the first layer signal. The first signal can serve as the first layer signal, and the second signal can serve as the second layer signal. By generating multiple layers of signals, the power distribution of the signal across the frequency can be made more uniform, thereby improving the utilization efficiency of spectrum resources.

[0062] In the second implementation described above, the second signal is generated by modulating the first signal. In this case, the wake-up information carried in the first signal can be modulated to generate the second signal. The wake-up information carried in the first signal can be used to instruct the terminal device to wake up. Alternatively, the wake-up information carried in the first signal can also be used to instruct the terminal device not to wake up. By modulating the wake-up information carried in the first signal to generate the second signal, the wake-up information transmitted in the second signal can be the same as the wake-up information transmitted in the first signal. The wake-up information carried in the first signal can be modulated based on an OFDM sequence to generate the second signal. Taking the first signal as an amplitude-modulated OOK signal as an example, the OOK ON symbol (on a high level) in the first signal can be multiplied by the OFDM sequence to generate the second signal. The OFDM sequence here can be a complex (vector) sequence or a real sequence. Complex sequences can include, but are not limited to: constant amplitude zero auto-correlation (CAZAC) sequences, ZC (Zaddoff Chu). Real sequences may include, but are not limited to: pseudo-random noise (PN) sequences, Gold sequences, M sequences, and Hadamard sequences.

[0063] As mentioned above, the first signal can be modulated based on an OFDM sequence. In some cases, the OFDM sequence used to modulate the first signal may include a single OFDM sequence. In other cases, the OFDM sequence used to modulate the first signal may include multiple OFDM sequences. In this case, multiple OFDM sequences can be concatenated, and the first signal can be modulated based on the concatenated sequence. When multiple concatenated OFDM sequences are used to modulate the first signal, it can be considered that the first signal has undergone spread spectrum modulation. In this case, the OFDM sequence can also be called a spread spectrum modulation sequence. Each OFDM sequence in the concatenated multiple OFDM sequences can be one of N candidate OFDM sequences, where N is a positive integer greater than or equal to 1. The candidate OFDM sequences can include one or more of the following: candidate complex (vector) sequences, candidate real sequences. Candidate complex sequences can include one or more of the following: constant amplitude zero auto-correlation (CAZAC) sequences, ZC (Zaddoff Chu). Candidate real sequences may include one or more of the following: pseudo-random noise (PN) sequences, Gold sequences, M sequences, and Hadamard sequences.

[0064] When a first signal is modulated using multiple concatenated OFDM sequences, the coded points of wake-up information in the first signal can be represented by these concatenated OFDM sequences. Here, a coded point can be understood as the location where information is assigned a code or symbol during transmission. The number of coded points of wake-up information that a concatenated OFDM sequence can represent can be determined based on the number of concatenated OFDM sequences M (M is an integer greater than or equal to 1) and the number of candidate OFDM sequences N. The number of coded points of wake-up information that a concatenated OFDM sequence can represent can be expressed as M*N. For example, with M=16 and N=2, the concatenated OFDM sequence can represent 32 coded points of wake-up information. With M=32 and N=2, the concatenated OFDM sequence can represent 64 coded points of wake-up information.

[0065] When the first signal is an OOK signal, in order to represent the coding points of the wake-up information using M cascaded OFDM sequences, the M OFDM sequences can be cyclically mapped to the first type of symbols in the first signal. The first type of symbols can be understood as the symbols in the OOK signal that correspond to 1 (or a high level). The first type of symbols can also be called OOK ON symbols. The OOK signal can include K first type symbols, where K is a positive integer greater than or equal to M. In some implementations, the M OFDM sequences can be cyclically mapped to all the first type symbols in the K first type symbols included in the first signal. In other implementations, the M OFDM sequences can be cyclically mapped to a subset of the first type symbols in the K first type symbols included in the first signal. The following sections will describe these two implementations in detail.

[0066] Implementation Method 1: M OFDM sequences are cyclically mapped to all Class I symbols among the K Class I symbols included in the first signal.

[0067] Implementation method one can include two cases. In the first case, the number K of the first type of symbols included in the first signal is an integer multiple of the number M of the concatenated OFDM sequences. For ease of description, the integer obtained by dividing K by M is denoted as L. In this case, the M OFDM sequences can be cyclically mapped to all the first type of symbols in the K first type of symbols included in the first signal through L mappings. This is explained below with reference to Figure 7. In the example shown in Figure 7, the first signal includes 8 first type of symbols, namely OOK ON symbols #1 to OOK ON symbols #8. Two OFDM sequences, namely OFDM sequence #1 and OFDM sequence #2, are concatenated to form the concatenated sequence. Since K = 8 and M = 2, 4 mappings can be performed. In the first mapping, OFDM sequence #1 and OFDM sequence #2 are mapped to OOK ON symbols #1 and OOK ON symbols #2, respectively. In the second mapping, OFDM sequence #1 and OFDM sequence #2 are mapped to OOK ON symbols #3 and OOK ON symbols #4, respectively. In the third mapping, OFDM sequence #1 and OFDM sequence #2 are mapped to OOK ON symbols #4 and #6, respectively. In the fourth mapping, OFDM sequence #1 and OFDM sequence #2 are mapped to OOK ON symbols #7 and #8, respectively. After four mappings, the cascaded OFDM sequence #1 and OFDM sequence #2 can be mapped to all eight OOK ON symbols included in the first signal.

[0068] In the second case, the number K of the first type of symbols included in the first signal is not an integer multiple of the number M of the concatenated OFDM sequences. For ease of description, the remainder (K ​​mod M) obtained by dividing K by M will be denoted as X. In this case, the first X OFDM sequences or the last X OFDM sequences from the M OFDM sequences can be mapped to the last X first type of symbols from the K first type of symbols, respectively. This will be explained with reference to Figure 8. In the example shown in Figure 8, the first signal includes 7 first type of symbols, namely OOK ON symbols #1 to OOK ON symbols #7. The 4 OFDM sequences, namely OFDM sequences #1 to OFDM sequences #4, are concatenated to form the concatenated sequence. That is, K = 7, M = 4, and X = 3. In the first mapping, OFDM sequences #1, #2, #3, and #4 can be mapped to OOK ON symbols #1, #2, #3, and #4, respectively. After this first mapping, three of the seven OOK ON symbols in the first signal remain unmapped. In this case, either the first three or the last three OFDM sequences can be mapped to the last three OOK ON symbols.

[0069] Implementation Method 2: M OFDM sequences are cyclically mapped to a portion of the first-class symbols among the K first-class symbols included in the first signal.

[0070] In implementation method two, M OFDM sequences can be cyclically mapped to a portion of the K Class I symbols. Here, "a portion of the Class I symbols" refers to the first few Class I symbols among the K Class I symbols. For the remaining symbols among the K Class I symbols, a fixed OFDM sequence can be used for mapping. Alternatively, a fixed OFDM sequence can be superimposed on the remaining symbols among the K Class I symbols. In other words, the OFDM sequence mapped or superimposed on the remaining symbols among the K Class I symbols can be a fixed OFDM sequence. Here, "fixed OFDM sequence" can be understood as a predefined OFDM sequence. The fixed OFDM sequence can have a fixed structure and parameters. The fixed OFDM sequence can include a pseudo-random sequence. The fixed OFDM sequence can be configured by the network device. In this second implementation method, it is equivalent to selectively discarding some Class I symbols in the first signal. Therefore, the second implementation method can also be called the "punching" method. For ease of description, the quotient of K divided by M is denoted as L, and the remainder is denoted as X. Taking a first signal comprising seven Class 1 symbols (OOK ON symbols #1 to #7) and four concatenated OFDM sequences (OFDM sequences #1 to #4) as an example, K = 7, M = 4, L = 1, and X = 3. In the first mapping, OFDM sequences #1, #2, #3, and #4 can be mapped to OOK ON symbols #1, #2, #3, and #4, respectively. After the first mapping, three of the seven OOK ON symbols in the first signal remain unmapped. In this case, a fixed OFDM sequence can be used to map to the remaining three OOK ON symbols. Alternatively, a fixed OFDM sequence can be superimposed on the remaining three OOK ON symbols.

[0071] The above describes the implementation of cyclically mapping M OFDM sequences to the first type of symbols of a first signal. Optionally, in some embodiments, the order of the M OFDM sequences can be interleaved before cyclically mapping them to the first type of symbols. That is, the concatenated M OFDM sequences can be randomly sorted first, and then mapped to the first type of symbols of the first signal. An interleaver can be used to randomly sort the concatenated M OFDM sequences. By interleaving before mapping, when using the "puncturing" implementation method mentioned above, the first type of symbols discarded each time are not the same, thereby improving the reliability of data transmission. The following explanation is in conjunction with Figure 9. In the example shown in Figure 9, the first signal includes 7 first type symbols, namely OOK ON symbols #1 to OOK ON symbols #7. Four OFDM sequences, namely OFDM sequences #1 to OFDM sequences #4, are concatenated to form the concatenated sequence. That is, K=7, M=4, X=3. In the first mapping, OFDM sequences #1, #2, #3, and #4 can be mapped to OOK ON symbols #1, #2, #3, and #4, respectively. After this first mapping, three OOK ON symbols remain unmapped out of the seven OOK ON symbols in the first signal. In this case, the order of the four OFDM sequences can be interleaved. That is, the four concatenated OFDM sequences can be randomly sorted first. Then, the first three interleaved OFDM sequences or the last three interleaved OFDM sequences can be mapped to the last three OOK ON symbols out of the seven OOK ON symbols. For example, after randomizing the four OFDM sequences, they are OFDM sequence #2, #4, #1, and #3 from left to right. Then OFDM sequence #2, OFDM sequence #4, and OFDM sequence #1 can be mapped to the last three OOK ON symbols out of the seven OOK ON symbols. Alternatively, OFDM sequence #4, OFDM sequence #1, and OFDM sequence #3 can be mapped to the last three OOK ON symbols out of the seven OOK ON symbols.

[0072] Step S610 mentions that a first signal can be generated by modulation. In some embodiments, sequence selection spread spectrum modulation (SCM) can be used to generate the first signal. SCM can spread the spectrum of the wake-up information over a wider bandwidth, thereby improving the anti-interference capability of the first signal. SCM can be used in conjunction with OOK modulation mentioned above to generate the first signal. For example, a suitable pseudo-random sequence (e.g., the M-sequence mentioned earlier) can be selected, and the binary sequence representing the wake-up information can be multiplied by the selected pseudo-random sequence to generate a spread signal. Then, the spread signal can be OOK modulated to generate the first signal. The "binary sequence representing the wake-up information" mentioned here can be an encoded binary sequence or an unencoded binary sequence. Encoded or unencoded binary sequences can be used to represent the encoding points of the wake-up information. Taking two-bit wake-up information as an example, "00", "01", "10", and "11" can each be represented by four different binary sequences.

[0073] Step S610 also mentions that, in order to generate the first signal, encoding can be performed before modulation. In some embodiments, the encoding method used to generate the first signal can be Manchester encoding. For example, the wake-up information can be Manchester encoded first, converting the wake-up information into a pulse signal (as shown in Figure 5). Further, the pulse signal can be modulated to generate the first signal. For example, the pulse signal can be OOK modulated to generate an OOK signal including high level (ON) and low level (OFF) as the first signal.

[0074] As mentioned above, both the first and second signals can be used to carry wake-up information for the terminal device. It was also mentioned that when both the first and second signals are used to carry wake-up information, they can carry or transmit the same wake-up information. That is, the same information needs to be transmitted on different resources. These resources can include time-domain resources. To better utilize resources, the coding rate of the second signal can be matched with the coding rate of the first signal. When the first signal is an amplitude-modulated OOK signal and the second signal is a signal generated by modulating the first signal with a concatenated OFDM sequence, the method described above of mapping the concatenated OFDM sequence to the first type of symbols in the OOK signal can be used to achieve coding rate matching between the first and second signals.

[0075] The above describes the scenario where both the first and second signals are used to carry the wake-up information of the terminal device. Since both signals carry the same wake-up information, they can convey the same information. Therefore, it can be said that the first and second signals transmit the same information. In other cases, one of the first and second signals may be used to carry the wake-up information of the terminal device, while the other may not. Whether both signals are used to carry the wake-up information can be determined based on the network device's configuration information. When one signal is used to carry the wake-up information, and the other is not, they can carry different information. In other words, they can transmit different information. That is, through higher-level configuration, the first and second signals can be configured to transmit the same or different information. For example, the network device can determine through configuration information that the first signal is used to carry the wake-up information of the terminal device, while the second signal is not. In this case, the first signal can be used to wake up the terminal device, and the second signal is no longer used to wake up the terminal device. When the first signal and the second signal convey different information, a fixed OFDM sequence can be superimposed on the signal that does not carry wake-up information. For example, when the first signal is used to carry wake-up information for the terminal device, and the second signal is not used to carry wake-up information for the terminal device, a fixed OFDM sequence can be superimposed on the second signal. Furthermore, the superimposed fixed OFDM sequence can be cell-dependent. That is, different OFDM sequences can be superimposed for different cells.

[0076] This application embodiment combines wake-up signals of two levels, or two different waveforms. It should be understood that the method provided in this application embodiment can also combine signals with waveforms of varying complexity, and these signals can have different signal structures. For example, some signals can be generated using channel coding, while others can be generated based on pure sequences.

[0077] The method embodiments of this application have been described in detail above with reference to Figures 1 to 9. The apparatus embodiments of this application will be described in detail below with reference to Figures 10 to 12. It should be understood that the descriptions of the method embodiments correspond to the descriptions of the apparatus embodiments; therefore, any parts not described in detail can be referred to the preceding method embodiments.

[0078] Figure 10 is a schematic diagram of the structure of a communication device 1000 provided in an embodiment of this application. The communication device 1000 shown in Figure 10 is a terminal device. The communication device 1000 includes a receiving unit 1010. The receiving unit 1010 is used to receive a first signal and / or a second signal sent by a network device. Both the first signal and the second signal are used to carry wake-up information of the terminal device, and the waveforms of the first signal and the second signal are different.

[0079] In some implementations, the first signal is an amplitude-modulated on / off keying OOK signal; and / or, the second signal is a signal modulated by orthogonal frequency division multiplexing (OFDM).

[0080] In some implementations, the second signal is a signal generated by modulating the first signal.

[0081] In some implementations, the second signal is a signal generated by modulating the wake-up information based on an OFDM sequence.

[0082] In some implementations, the OFDM sequence used to modulate the first signal is a sequence formed by concatenating M OFDM sequences, where each of the M OFDM sequences is one of N candidate OFDM sequences, where M is a positive integer greater than or equal to 1 and N is a positive integer greater than or equal to 1.

[0083] In some implementations, the first signal is an OOK signal, which includes K first-class symbols. The M OFDM sequences are cyclically mapped to some or all of the first-class symbols in the K first-class symbols. The first-class symbols are the symbols corresponding to 1 contained in the OOK signal, and K is a positive integer greater than or equal to M.

[0084] In some implementations, the order of the M OFDM sequences is interleaved before they are cyclically mapped to the first class of symbols.

[0085] In some implementations, the M OFDM sequences are cyclically mapped to a portion of the K first-class symbols, and the OFDM sequences mapped to the remaining symbols of the K first-class symbols are fixed OFDM sequences.

[0086] In some implementations, the M OFDM sequences are cyclically mapped to all the first-class symbols in the K first-class symbols. If K is not an integer multiple of M, then the first X OFDM sequences or the last X OFDM sequences of the M OFDM sequences are respectively mapped to the last X first-class symbols in the K first-class symbols, where X is equal to the remainder of K divided by M.

[0087] In some implementations, the modulation method of the first signal is sequence selected spread spectrum modulation.

[0088] In some implementations, the first signal uses Manchester encoding.

[0089] In some implementations, the encoding rate of the second signal is matched with that of the first signal.

[0090] In some implementations, whether both the first signal and the second signal are used to carry the wake-up information of the terminal device is determined based on the configuration information of the network device.

[0091] Figure 11 is a schematic diagram of the structure of a communication device 1100 provided in an embodiment of this application. The communication device 1100 shown in Figure 11 is a network device. The communication device 1100 includes a transmitting unit 1110. The transmitting unit 1110 is used to transmit a first signal and a second signal, both of which are used to carry wake-up information of a terminal device, and the waveforms of the first signal and the second signal are different.

[0092] In some implementations, the first signal is an amplitude-modulated on / off keying OOK signal; and / or, the second signal is a signal modulated by orthogonal frequency division multiplexing (OFDM).

[0093] In some implementations, the second signal is a signal generated by modulating the first signal.

[0094] In some implementations, the second signal is a signal generated by modulating the wake-up information based on an OFDM sequence.

[0095] In some implementations, the OFDM sequence used to modulate the first signal is a sequence formed by concatenating M OFDM sequences, where each of the M OFDM sequences is one of N candidate OFDM sequences, where M is a positive integer greater than or equal to 1 and N is a positive integer greater than or equal to 1.

[0096] In some implementations, the first signal is an OOK signal, which includes K first-class symbols. The M OFDM sequences are cyclically mapped to some or all of the first-class symbols in the K first-class symbols. The first-class symbols are the symbols corresponding to 1 contained in the OOK signal, and K is a positive integer greater than or equal to M.

[0097] In some implementations, the order of the M OFDM sequences is interleaved before they are cyclically mapped to the first class of symbols.

[0098] In some implementations, the M OFDM sequences are cyclically mapped to a portion of the K first-class symbols, and the OFDM sequences mapped to the remaining symbols of the K first-class symbols are fixed OFDM sequences.

[0099] In some implementations, the M OFDM sequences are cyclically mapped to all the first-class symbols in the K first-class symbols. If K is not an integer multiple of M, then the first X OFDM sequences or the last X OFDM sequences of the M OFDM sequences are respectively mapped to the last X first-class symbols in the K first-class symbols, where X is equal to the remainder of K divided by M.

[0100] In some implementations, the modulation method of the first signal is sequence selected spread spectrum modulation.

[0101] In some implementations, the first signal uses Manchester encoding.

[0102] In some implementations, the encoding rate of the second signal is matched with that of the first signal.

[0103] In some implementations, whether both the first signal and the second signal are used to carry the wake-up information of the terminal device is determined based on the configuration information of the network device.

[0104] Figure 12 is a schematic diagram of the structure of a communication device applicable to embodiments of this application. The dashed lines in Figure 12 indicate that the unit or module is optional. This device 1200 can be used to implement the methods described in the above method embodiments. Device 1200 can be a chip, a terminal device, or a network device.

[0105] Apparatus 1200 may include one or more processors 1210. The processor 1210 may support apparatus 1200 in implementing the methods described in the preceding method embodiments. The processor 1210 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0106] The apparatus 1200 may further include one or more memories 1220. The memories 1220 store a program that can be executed by the processor 1210, causing the processor 1210 to perform the methods described in the preceding method embodiments. The memories 1220 may be independent of the processor 1210 or integrated within the processor 1210.

[0107] The device 1200 may also include a transceiver 1230. The processor 1210 can communicate with other devices or chips via the transceiver 1230. For example, the processor 1210 can send and receive data with other devices or chips via the transceiver 1230.

[0108] This application also provides a computer-readable storage medium for storing a program. This computer-readable storage medium can be applied to the communication device provided in this application, and the program causes a computer to execute the methods performed by the communication device in various embodiments of this application.

[0109] This application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to the communication device provided in this application embodiment, and the program causes a computer to execute the methods performed by the communication device in various embodiments of this application.

[0110] This application also provides a computer program. This computer program can be applied to the communication device provided in this application, and causes the computer to execute the methods performed by the communication device in various embodiments of this application.

[0111] It should be understood that the terms "system" and "network" in this application can be used interchangeably. Furthermore, the terminology used in this application is only for explaining specific embodiments of the application and is not intended to limit the application. The terms "first," "second," "third," and "fourth," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. In addition, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0112] In the embodiments of this application, the term "instruction" can be a direct instruction, an indirect instruction, or an indication of a relationship. For example, A instructing B can mean that A directly instructs B, such as B being able to obtain information through A; it can also mean that A indirectly instructs B, such as A instructing C, so B can obtain information through C; or it can mean that there is a relationship between A and B.

[0113] In the embodiments of this application, "B corresponding to A" means that B is associated with A, and B can be determined based on A. However, it should also be understood that determining B based on A does not mean that B is determined solely based on A; B can also be determined based on A and / or other information.

[0114] In the embodiments of this application, the term "correspondence" can indicate a direct or indirect correspondence between two things, or an association between two things, or a relationship such as instruction and being instructed, configuration and being configured.

[0115] In this application embodiment, "predefined" or "preconfigured" can be implemented by pre-storing corresponding codes, tables, or other means that can be used to indicate relevant information in the device (e.g., including terminal devices and network devices). This application does not limit the specific implementation method. For example, predefined can refer to what is defined in the protocol.

[0116] In this application embodiment, the "protocol" may refer to a standard protocol in the field of communication, such as the LTE protocol, the NR protocol, and related protocols applied to future communication systems. This application does not limit this.

[0117] In the embodiments of this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0118] In the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0119] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0120] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0121] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0122] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can read or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., digital video discs, DVDs) or semiconductor media (e.g., solid-state disks, SSDs), etc.

[0123] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A communication method, characterized in that, include: The terminal device receives a first signal and / or a second signal sent by the network device. Both the first signal and the second signal are used to carry the wake-up information of the terminal device, and the waveforms of the first signal and the second signal are different.

2. The method according to claim 1, characterized in that, The first signal is an amplitude-modulated on / off keying OOK signal; and / or, the second signal is a signal modulated by orthogonal frequency division multiplexing (OFDM).

3. The method according to claim 1 or 2, characterized in that, The second signal is a signal generated by modulating the first signal.

4. The method according to claim 3, characterized in that, The second signal is generated by modulating the wake-up information carried in the first signal using an OFDM sequence.

5. The method according to claim 4, characterized in that, The OFDM sequence used to modulate the first signal is a sequence formed by concatenating M OFDM sequences. Each of the M OFDM sequences is one of N candidate OFDM sequences, where M is a positive integer greater than or equal to 1 and N is a positive integer greater than or equal to 1.

6. The method according to claim 5, characterized in that, The first signal is an OOK signal, which includes K first-class symbols. The M OFDM sequences are cyclically mapped to some or all of the first-class symbols in the K first-class symbols. The first-class symbols are the symbols corresponding to 1 contained in the OOK signal, and K is a positive integer greater than or equal to M.

7. The method according to claim 5 or 6, characterized in that, The order of the M OFDM sequences is interleaved before they are cyclically mapped to the first class of symbols.

8. The method according to claim 6 or 7, characterized in that, The M OFDM sequences are cyclically mapped to a portion of the K first-class symbols, and the OFDM sequences mapped to the remaining symbols in the K first-class symbols are fixed OFDM sequences.

9. The method according to claim 6 or 7, characterized in that, The M OFDM sequences are cyclically mapped to all the first-class symbols in the K first-class symbols. If K is not an integer multiple of M, then the first X OFDM sequences or the last X OFDM sequences of the M OFDM sequences are respectively mapped to the last X first-class symbols in the K first-class symbols, where X is equal to the remainder of K divided by M.

10. The method according to any one of claims 1 to 9, characterized in that, The modulation method of the first signal is sequence selected spread spectrum modulation.

11. The method according to any one of claims 1 to 10, characterized in that, The first signal uses Manchester encoding.

12. The method according to any one of claims 1 to 11, characterized in that, The second signal matches the encoding rate of the first signal.

13. The method according to any one of claims 1 to 12, characterized in that, Whether both the first signal and the second signal are used to carry the wake-up information of the terminal device is determined based on the configuration information of the network device.

14. A communication method, characterized in that, include: The network device sends a first signal and a second signal, both of which are used to carry wake-up information of the terminal device, and the waveforms of the first signal and the second signal are different.

15. The method according to claim 14, characterized in that, The first signal is an amplitude-modulated on / off keying OOK signal; and / or, the second signal is a signal modulated by orthogonal frequency division multiplexing (OFDM).

16. The method according to claim 14 or 15, characterized in that, The second signal is a signal generated by modulating the first signal.

17. The method according to claim 16, characterized in that, The second signal is generated by modulating the wake-up information carried in the first signal using an OFDM sequence.

18. The method according to claim 17, characterized in that, The OFDM sequence used to modulate the first signal is a sequence formed by concatenating M OFDM sequences. Each of the M OFDM sequences is one of N candidate OFDM sequences, where M is a positive integer greater than or equal to 1 and N is a positive integer greater than or equal to 1.

19. The method according to claim 18, characterized in that, The first signal is an OOK signal, which includes K first-class symbols. The M OFDM sequences are cyclically mapped to some or all of the first-class symbols in the K first-class symbols. The first-class symbols are the symbols corresponding to 1 contained in the OOK signal, and K is a positive integer greater than or equal to M.

20. The method according to claim 18 or 19, characterized in that, The order of the M OFDM sequences is interleaved before they are cyclically mapped to the first class of symbols.

21. The method according to claim 19 or 20, characterized in that, The M OFDM sequences are cyclically mapped to a portion of the K first-class symbols, and the OFDM sequences mapped to the remaining symbols in the K first-class symbols are fixed OFDM sequences.

22. The method according to claim 19 or 20, characterized in that, The M OFDM sequences are cyclically mapped to all the first-class symbols in the K first-class symbols. If K is not an integer multiple of M, then the first X OFDM sequences or the last X OFDM sequences of the M OFDM sequences are respectively mapped to the last X first-class symbols in the K first-class symbols, where X is equal to the remainder of K divided by M.

23. The method according to any one of claims 14 to 22, characterized in that, The modulation method of the first signal is sequence selected spread spectrum modulation.

24. The method according to any one of claims 14 to 23, characterized in that, The first signal uses Manchester encoding.

25. The method according to any one of claims 14 to 24, characterized in that, The second signal matches the encoding rate of the first signal.

26. The method according to any one of claims 14 to 25, characterized in that, Whether both the first signal and the second signal are used to carry the wake-up information of the terminal device is determined based on the configuration information of the network device.

27. A communication device, characterized in that, The communication device is a terminal device, and the terminal device includes: The receiving unit is used to receive a first signal and / or a second signal sent by the network device, wherein the first signal and the second signal are both used to carry the wake-up information of the terminal device, and the waveforms of the first signal and the second signal are different.

28. The device according to claim 27, characterized in that, The first signal is an amplitude-modulated on / off keying OOK signal; and / or, the second signal is a signal modulated by orthogonal frequency division multiplexing (OFDM).

29. The device according to claim 27 or 28, characterized in that, The second signal is a signal generated by modulating the first signal.

30. The device according to claim 29, characterized in that, The second signal is generated by modulating the wake-up information carried in the first signal using an OFDM sequence.

31. The device according to claim 30, characterized in that, The OFDM sequence used to modulate the first signal is a sequence formed by concatenating M OFDM sequences. Each of the M OFDM sequences is one of N candidate OFDM sequences, where M is a positive integer greater than or equal to 1 and N is a positive integer greater than or equal to 1.

32. The device according to claim 31, characterized in that, The first signal is an OOK signal, which includes K first-class symbols. The M OFDM sequences are cyclically mapped to some or all of the first-class symbols in the K first-class symbols. The first-class symbols are the symbols corresponding to 1 contained in the OOK signal, and K is a positive integer greater than or equal to M.

33. The device according to claim 31 or 32, characterized in that, The order of the M OFDM sequences is interleaved before they are cyclically mapped to the first class of symbols.

34. The device according to claim 32 or 34, characterized in that, The M OFDM sequences are cyclically mapped to a portion of the K first-class symbols, and the OFDM sequences mapped to the remaining symbols in the K first-class symbols are fixed OFDM sequences.

35. The device according to claim 32 or 34, characterized in that, The M OFDM sequences are cyclically mapped to all the first-class symbols in the K first-class symbols. If K is not an integer multiple of M, then the first X OFDM sequences or the last X OFDM sequences of the M OFDM sequences are respectively mapped to the last X first-class symbols in the K first-class symbols, where X is equal to the remainder of K divided by M.

36. The device according to any one of claims 27 to 35, characterized in that, The modulation method of the first signal is sequence selected spread spectrum modulation.

37. The device according to any one of claims 27 to 36, characterized in that, The first signal uses Manchester encoding.

38. The device according to any one of claims 27 to 37, characterized in that, The second signal matches the encoding rate of the first signal.

39. The device according to any one of claims 27 to 38, characterized in that, Whether both the first signal and the second signal are used to carry the wake-up information of the terminal device is determined based on the configuration information of the network device.

40. A communication device, characterized in that, The communication device is a network device, and the network device includes: The transmitting unit is used to transmit a first signal and a second signal, both of which are used to carry wake-up information of the terminal device, and the waveforms of the first signal and the second signal are different.

41. The device according to claim 40, characterized in that, The first signal is an amplitude-modulated on / off keying OOK signal; and / or, the second signal is a signal modulated by orthogonal frequency division multiplexing (OFDM).

42. The device according to claim 40 or 41, characterized in that, The second signal is a signal generated by modulating the first signal.

43. The device according to claim 42, characterized in that, The second signal is generated by modulating the wake-up information carried in the first signal using an OFDM sequence.

44. The device according to claim 43, characterized in that, The OFDM sequence used to modulate the first signal is a sequence formed by concatenating M OFDM sequences. Each of the M OFDM sequences is one of N candidate OFDM sequences, where M is a positive integer greater than or equal to 1 and N is a positive integer greater than or equal to 1.

45. The device according to claim 44, characterized in that, The first signal is an OOK signal, which includes K first-class symbols. The M OFDM sequences are cyclically mapped to some or all of the first-class symbols in the K first-class symbols. The first-class symbols are the symbols corresponding to 1 contained in the OOK signal, and K is a positive integer greater than or equal to M.

46. ​​The device according to claim 44 or 45, characterized in that, The order of the M OFDM sequences is interleaved before they are cyclically mapped to the first class of symbols.

47. The device according to claim 45 or 46, characterized in that, The M OFDM sequences are cyclically mapped to a portion of the K first-class symbols, and the OFDM sequences mapped to the remaining symbols in the K first-class symbols are fixed OFDM sequences.

48. The device according to claim 45 or 46, characterized in that, The M OFDM sequences are cyclically mapped to all the first-class symbols in the K first-class symbols. If K is not an integer multiple of M, then the first X OFDM sequences or the last X OFDM sequences of the M OFDM sequences are respectively mapped to the last X first-class symbols in the K first-class symbols, where X is equal to the remainder of K divided by M.

49. The device according to any one of claims 40 to 48, characterized in that, The modulation method of the first signal is sequence selected spread spectrum modulation.

50. The device according to any one of claims 40 to 49, characterized in that, The first signal uses Manchester encoding.

51. The device according to any one of claims 40 to 50, characterized in that, The second signal matches the encoding rate of the first signal.

52. The device according to any one of claims 40 to 51, characterized in that, Whether both the first signal and the second signal are used to carry the wake-up information of the terminal device is determined based on the configuration information of the network device.

53. A communication device, characterized in that, The device includes a transceiver, a memory, and a processor. The memory stores a program, and the processor invokes the program in the memory and controls the transceiver to receive or transmit signals so that the communication device performs the method as described in any one of claims 1 to 13 or the method as described in any one of claims 14 to 26.

54. An apparatus, characterized in that, Includes a processor for calling a program from memory to cause the apparatus to perform the method as claimed in any one of claims 1 to 13 or the method as claimed in any one of claims 14 to 26.

55. A chip, characterized in that, Includes a processor for calling a program from memory, causing a device on which the chip is mounted to perform the method as claimed in any one of claims 1 to 13 or the method as claimed in any one of claims 14 to 26.

56. A computer-readable storage medium, characterized in that, It contains a program that causes a computer to perform the method as described in any one of claims 1 to 13 or the method as described in any one of claims 14 to 26.

57. A computer program product, characterized in that, Includes a program that causes a computer to perform the method as claimed in any one of claims 1 to 13 or the method as claimed in any one of claims 14 to 26.

58. A computer program, characterized in that, The computer program causes the computer to perform the method as described in any one of claims 1 to 13 or the method as described in any one of claims 14 to 26.

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