Wireless communication method, terminal equipment and network equipment

Abstract

The invention provides a wireless communication method, terminal equipment and network equipment. The method comprises: a terminal device receiving one or more of the following: a first signal and a second signal sent by a network device, the second signal being received based on the first signal; the second signal; wherein the first signal and / or the second signal are / is obtained by superposing a first sequence and / or a second sequence on a time domain or a frequency domain of orthogonal frequency division multiplexing (OFDM), and the first signal and / or the second signal are / is received by a first receiver of the terminal equipment. The power consumption of the first receiver is lower than that of a second receiver of the terminal equipment. In the application, the first sequence and / or the second sequence are / is superposed with the OFDM to obtain the first signal and / or the second signal, so that the symbol energy of the first signal and / or the second signal can be uniformly distributed in the time domain, and the robustness of the first signal and / or the second signal to timing and frequency deviation can be improved.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and more specifically, to a wireless communication method, terminal equipment and network equipment. Background Art

[0002] In order to reduce the power consumption of the terminal device, the communication system introduces a low-power receiver. When the terminal device is idle, the main receiver can be turned off or set to a deep sleep state, and the first signal and / or the second signal can be monitored only through the low-power receiver. However, how to design the first signal and / or the second signal is an urgent problem to be solved. Summary of the invention

[0003] The present application provides a wireless communication method, terminal equipment and network equipment. The following introduces various aspects involved in the present application.

[0004] In a first aspect, a method for wireless communication is provided, comprising: a terminal device receives one or more of the following sent by a network device: a first signal and a second signal, the second signal being received based on the first signal; and the second signal; wherein the first signal and / or the second signal is obtained by superimposing a first sequence and / or a second sequence on a time domain or a frequency domain of orthogonal frequency division multiplexing (OFDM), and the first signal and / or the second signal is received by a first receiver of the terminal device, and power consumption of the first receiver is lower than power consumption of a second receiver of the terminal device.

[0005] According to a second aspect, a method for wireless communication is provided, comprising: a network device sends one or more of the following to a terminal device: a first signal and a second signal, the second signal being received based on the first signal; and the second signal; wherein the first signal and / or the second signal is obtained by superimposing a first sequence and / or a second sequence on a time domain or a frequency domain of orthogonal frequency division multiplexing (OFDM), and the first signal and / or the second signal is received by a first receiver of the terminal device, and power consumption of the first receiver is lower than that of a second receiver of the terminal device.

[0006] According to a third aspect, a terminal device is provided, comprising: a receiving unit, configured to receive one or more of the following sent by a network device: a first signal and a second signal, the second signal being received based on the first signal; and the second signal; wherein the first signal and / or the second signal is obtained by superimposing a first sequence and / or a second sequence on a time domain or a frequency domain of orthogonal frequency division multiplexing OFDM, and the first signal and / or the second signal is received by a first receiver of the terminal device, and power consumption of the first receiver is lower than power consumption of a second receiver of the terminal device.

[0007] In a fourth aspect, a network device is provided, comprising: a sending unit, configured to send one or more of the following to a terminal device: a first signal and a second signal, the second signal being received based on the first signal; the second signal; wherein the first signal and / or the second signal is obtained by superimposing a first sequence and / or a second sequence on a time domain or a frequency domain of orthogonal frequency division multiplexing OFDM, the first signal and / or the second signal is received by a first receiver of the terminal device, and power consumption of the first receiver is lower than power consumption of a second receiver of the terminal device.

[0008] In a fifth aspect, a terminal device is provided, comprising a processor, a memory and a communication interface, wherein the memory is used to store one or more computer programs, and the processor is used to call the computer programs in the memory so that the terminal device executes part or all of the steps in the method of the first aspect.

[0009] In a sixth aspect, a network device is provided, comprising a processor, a memory, and a transceiver, wherein the memory is used to store one or more computer programs, and the processor is used to call the computer programs in the memory so that the network device executes part or all of the steps in the method of the second aspect.

[0010] In a seventh aspect, an embodiment of the present application provides a communication system, which includes the above-mentioned terminal device and / or network device. In another possible design, the system may also include other devices that interact with the terminal device or network device in the solution provided by the embodiment of the present application.

[0011] In an eighth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, wherein the computer program enables a communication device (for example, a terminal device or a network device) to perform some or all of the steps in the methods of the above aspects.

[0012] In a ninth aspect, an embodiment of the present application provides a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to enable a communication device (e.g., a terminal device or a network device) to perform some or all of the steps in the above-mentioned various aspects of the method. In some implementations, the computer program product can be a software installation package.

[0013] In the tenth aspect, an embodiment of the present application provides a chip, which includes a memory and a processor. The processor can call and run a computer program from the memory to implement some or all of the steps described in the methods of the above aspects.

[0014] The embodiment of the present application proposes a method for wireless communication, wherein the first signal and / or the second signal received by the first receiver of the terminal device is obtained by superimposing the first sequence and / or the second sequence on the time domain or frequency domain of OFDM, and the power consumption of the first receiver is lower than the power consumption of the second receiver of the terminal device. The first signal and / or the second signal are obtained by superimposing OFDM using the first sequence and / or the second sequence, which can achieve uniform distribution of the symbol energy of the first signal and / or the second signal in the time domain, and help improve the robustness of the first signal and / or the second signal to timing and frequency deviations. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a wireless communication system 100 applied in an embodiment of the present application.

[0016] Figure 2 It is a schematic flowchart of the wireless communication method of an embodiment of the present application.

[0017] Figure 3 It is a schematic diagram of the low-power wake-up signal (LP-WUS) generation process.

[0018] Figure 4 is an example diagram of an OFDM symbol for transmitting a second signal.

[0019] Figure 5 is a diagram showing an example of an OFDM symbol structure for transmitting a second signal.

[0020] Figure 6 is a schematic diagram of the structure of the first signal.

[0021] Figure 7 It is a schematic diagram of a terminal device according to an embodiment of the present application.

[0022] Figure 8 It is a schematic diagram of a network device according to an embodiment of the present application.

[0023] Fig. 9 It is a schematic structural diagram of a communication device according to an embodiment of the present application. DETAILED DESCRIPTION

[0024] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0025] Figure 1 The wireless communication system 100 used in the embodiment of the present application 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 may provide communication coverage for a specific geographical area and may communicate with the terminal device 120 located in the coverage area.

[0026] Figure 1 One network device and two terminals are shown exemplarily. Optionally, the wireless communication system 100 may include multiple network devices and each network device may include another number of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0027] Optionally, the wireless communication system 100 may also include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiments of the present application.

[0028] It should be understood that the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: the fifth generation (5th generation, 5G) system or new radio (new radio, NR), long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD), etc. The technical solutions provided by the present application can also be applied to future communication systems, such as the sixth generation mobile communication system, satellite communication system, and so on.

[0029] The terminal device in the embodiment of the present application may 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 the embodiment of the present application may be a device that provides voice and / or data connectivity to a user, and may be used to connect people, objects and machines, such as a handheld device with wireless connection function, a vehicle-mounted device, etc. The terminal device in the embodiment of the present application can be a mobile phone, a tablet computer, a laptop computer, a PDA, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, etc. Optionally, the UE can be used to act as a base station. For example, the UE can act as a scheduling entity that provides sidelink signals between UEs in V2X or D2D, etc. For example, a cellular phone and a car communicate with each other using a sidelink signal. The cellular phone and the smart home device communicate with each other without relaying the communication signal through the base station.

[0030] The network device in the embodiment of the present application may be a device for communicating with a terminal device, and the network device may also be referred to as an access network device or a wireless access network device, such as a base station. The network device in the embodiment of the present application may refer to a wireless access network (RAN) node (or device) that connects a terminal device to a wireless network. Base station can broadly cover various names as follows, or replace with the following names, such as: NodeB, evolved NodeB (eNB), next generation NodeB (gNB), relay station, access point, transmission point (TRP), transmission point (TP), master station MeNB, auxiliary station SeNB, multi-standard radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, base band unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. The base station can be a macro base station, a micro base station, a relay node, a donor node or the like, or a combination thereof. The base station can also refer to a communication module, a modem or a chip used to be arranged in the aforementioned device or apparatus. The base station can also be a mobile switching center and a device that performs base station functions in device-to-device D2D, vehicle-to-everything (V2X), machine-to-machine (M2M) communications, a network-side device in a 6G network, and a device that performs base station functions in future communication systems. The base station can support networks with the same or different access technologies. The embodiments of the present application do not limit the specific technology and specific device form used by the network equipment.

[0031] Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move based on the location of the mobile base station. In other examples, a helicopter or drone can be configured to act as a device that communicates with another base station.

[0032] In some deployments, the network device in the embodiments of the present application may refer to a CU or a DU, or the network device includes a CU and a DU. The gNB may also include an AAU.

[0033] The network equipment and terminal equipment can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on the water surface; they can also be deployed on aircraft, balloons and satellites in the air. The embodiments of the present application do not limit the scenarios in which the network equipment and terminal equipment are located.

[0034] It should be understood that all or part of the functions of the communication device in the present application may also be implemented by software functions running on hardware, or by virtualization functions instantiated on a platform (eg, a cloud platform).

[0035] In cellular networks, typically end devices (e.g., end devices in 5G networks) consume tens of milliwatts even when not transmitting or receiving any data. This idle power consumption is due to the fact that the end device must make periodic measurements and check for potential paging messages. Therefore, without the support of an external power supply, IoT devices are difficult to implement in practice.

[0036] In order to solve the above problems, the communication system (for example, NR) introduces a low-power receiver. When the terminal device is idle, the main receiver can be turned off or set to a deep sleep state, and the first signal and / or the second signal can be monitored only by the low-power receiver, thereby reducing the power consumption of the terminal device. However, how to design the first signal and / or the second signal is an urgent problem to be solved.

[0037] For example, when the second signal is LP-WUS, when the main receiver of the terminal device is awakened, the terminal device enters the radio resource control (RRC) connected state (CONNECTED), and the low-power receiver of the terminal device can be continuously turned on to receive LP-WUS. Therefore, the low-power receiver is independent of the main receiver, that is, the main receiver can be turned off when the low-power receiver is active and searching for potential LP-WUS. Considering that the moment when the terminal device monitors LP-WUS may occur during the reduced-power physical downlink control channel (PDCCH) monitoring period, when multiple terminal devices monitor LP-WUS at the same time, there may be false awakening. Therefore, how to embed LP-WUS into the current communication system to ensure the low-power performance of the terminal is an urgent problem to be solved.

[0038] For another example, the first signal is a low power synchronization signal (LP-SS). In a system based on a low power wake-up signal, the time and frequency synchronization process is also very important. When the main receiver is configured with a long "off mode" or sleep period, the clock frequency of the terminal device may drift. Clock frequency drift or frequency error may cause the duty cycle of the low power wake up receiver (LP-WUR) to be inaccurate. Therefore, the low power receiver of the terminal device can be configured to detect and receive periodic LP-SS to achieve precise synchronization at the low power receiver and wake up the main receiver through LP-WUS. Therefore, how to design LP-SS is also a technical problem that needs to be solved.

[0039] In response to the above problems, an embodiment of the present application proposes a method for wireless communication, wherein the first signal and / or the second signal received by the first receiver of the terminal device is obtained by superimposing the first sequence and / or the second sequence on the time domain or frequency domain of OFDM, and the power consumption of the first receiver is lower than the power consumption of the second receiver of the terminal device. By using the first sequence and / or the second sequence to superimpose OFDM to obtain the first signal and / or the second signal, uniform distribution of the symbol energy of the first signal and / or the second signal in the time domain can be achieved, which helps to improve the robustness of the first signal and / or the second signal to timing and frequency deviations.

[0040] Combined with the following Figure 2 A wireless communication method according to an embodiment of the present application is introduced. Figure 2 It is a schematic flowchart of the wireless communication method of an embodiment of the present application. Figure 2 The illustrated scheme includes step S210.

[0041] In step S210, the network device sends one or more of the following to the terminal device: a first signal and a second signal; and a second signal. Correspondingly, the terminal device receives one or more of the following sent by the network device: the first signal and the second signal; and the second signal.

[0042] In some implementations, the terminal device includes a first receiver and a second receiver, the power consumption of the first receiver is lower than the power consumption of the second receiver, and the first signal and / or the second signal is received by the first receiver of the terminal device, or in other words, the first signal and / or the second signal is monitored by the terminal device through the first receiver.

[0043] In some implementations, the power consumption of the first receiver is lower than that of the second receiver. Therefore, the first receiver may be the low-power receiver (LR) mentioned above, and the second receiver may be the main receiver (MR) mentioned above.

[0044] In some implementations, the first signal and / or the second signal is received by the LR, and the first signal and / or the second signal may also be referred to as a “low power consumption signal”.

[0045] In some implementations, the first receiver may also be referred to as a low power wake-up module or LP-WUR, and the second receiver may also be referred to as a "primary communication module."

[0046] In some implementations, the two receiving modules are integrated into one receiving module, that is, the first receiver and the second receiver are two separate modules, or the first receiver and the second receiver are integrated into one module.

[0047] In some implementations, a terminal device receives a first signal and a second signal sent by a network device, and the second signal is received based on the first signal. That is, after receiving the first signal sent by the network device, the terminal device receives the second signal sent by the network device based on the received first signal.

[0048] In some implementations, the first signal is a signal for performing time-frequency synchronization. Accordingly, the terminal device performs synchronization based on the received first signal.

[0049] In some implementations, the second signal is a signal for waking up the second receiver.

[0050] In some implementations, the first signal is the LP-SS mentioned above. LP-SS is a periodic signaling used by LP-WUR to obtain and maintain time and frequency synchronization.

[0051] In some implementations, the second signal is the LP-WUS mentioned above. For example, the first signal is LP-SS, and the second signal is LP-WUS. The LP-WUR of the terminal device can first receive the LP-SS, use the LP-SS for time and frequency synchronization, and can also use the LP-SS for radio resource management (RRM) measurements to determine the potential coverage and detectability of further LP-WUS reception and detection.

[0052] In some implementations, the first signal is LP-SS, and the period of LP-SS supports one or more of the following: 80ms; 160ms; 320ms; 640ms; 1280ms; 2560ms; 5120ms; 10240ms.

[0053] In some implementations, the modulation method of the first signal and / or the second signal may be a low-rate modulation method, that is, the modulation method of the first signal and / or the second signal may be a modulation method that can modulate the first signal and / or the second signal into a low-rate signal.

[0054] In some implementations, the low-rate modulation method may be one or more of the following: binary amplitude keying modulation (on-off keying, OOK); pulse modulation; modulation based on a specific function.

[0055] In some implementations, the modulation mode of the first signal and / or the second signal is OOK. For example, the second signal is LP-WUS, and the information bits of LP-WUS can be carried by the modulated OOK sequence or OOK bits.

[0056] In some implementations, the modulation mode of the first signal and / or the second signal is OOK, and the first sequence and / or the second sequence corresponding to the first signal and / or the second signal modulated based on OOK can be a complex-valued sequence. For example, the signal sequence of the first signal after OOK modulation is an OOK sequence, and the OFF symbol in the OOK sequence can be mapped to an all-zero sequence, and the ON symbol in the OOK sequence can be mapped to the first sequence, the first sequence is a specific short complex-valued sequence, and these sequences are connected to obtain a pre-discrete Fourier transform (DFT) sequence.

[0057] In some implementations, if the modulation scheme of the first signal and / or the second signal is OOK, the first receiver may detect the first signal and / or the second signal through correlation.

[0058] In some implementations, the modulation method of the first signal and the second signal are both OOK. Considering that LP-WUR will detect the first signal and the second signal at the same time, the OOK configurations of the first signal and the second signal can be the same to make the detection of LP-WUR simpler.

[0059] In some implementations, the encoding method of the first signal and / or the second signal includes one or more of the following: inverted non-return-to-zero encoding; Manchester encoding; unipolar return-to-zero encoding; differential bi-phase encoding; Miller encoding; modified Miller code encoding; pulse-interval encoding; pulse position encoding; bi-phase interval code encoding; pulse width encoding.

[0060] In some implementations, a cyclic redundancy check (CRC) may be added to the first signal and / or the second signal after being encoded.

[0061] In some implementations, the first signal and / or the second signal is generated by the first sequence and / or the second sequence, or in other words, the first signal is generated by the first sequence, and / or the second signal is generated by the second sequence.

[0062] In some implementations, the first signal and / or the second signal is generated by the first sequence and / or the second sequence. It can be understood that the first signal and / or the second signal is obtained by superimposing the first sequence and / or the second sequence on OFDM, that is, the first signal is obtained by superimposing the first sequence on OFDM, and the second signal is obtained by superimposing the second sequence on OFDM.

[0063] In the embodiment of the present application, the timing of superimposing the first sequence and / or the second sequence with OFDM is not limited. For example, the first sequence may be superimposed with OFDM before encoding, or the first sequence may be superimposed with OFDM after encoding. For another example, the first sequence is superimposed with OFDM in the time domain, or the first sequence is superimposed with OFDM in the frequency domain.

[0064] In some implementations, the first sequence and / or the second sequence is a first signal and / or a second signal obtained by superimposing in the time domain of OFDM, and the first sequence and / or the second sequence is a time domain sequence.

[0065] In some implementations, the first sequence and / or the second sequence are the first signal and / or the second signal obtained by superimposing the OFDM in the time domain. It can be understood that the first sequence and / or the second sequence are superimposed with the OFDM before DFT / LS processing, that is, the first sequence and / or the second sequence in the time domain are superimposed with the OFDM, and the first signal and / or the second signal are obtained by DFT / LS and IFFT. For example, the second signal is LP-WUS, see Figure 3 , Figure 3 The schematic diagram of the generation process of LP-WUS is shown, based on N ′ At the timing of a LP-WUS, the LP-WUS is modulated using the OOK-4 modulation method, and the OOK ON symbol of the modulated LP-WUS corresponds to the second sequence. The second sequence can be superimposed with OFDM before DFT / least square (LS) processing (such as signal generation and modification stage).

[0066] In some implementations, the first sequence and / or the second sequence is a first signal and / or a second signal obtained by superimposing on the frequency domain of OFDM, and the first sequence and / or the second sequence is a frequency domain sequence.

[0067] In some other implementations, the first sequence and / or the second sequence are the first signal and / or the second signal obtained by superimposing OFDM in the frequency domain. It can be understood that the first sequence and / or the second sequence are superimposed with OFDM before IFFT processing, and the superimposed first sequence and / or the second sequence are frequency domain sequences, that is, the first sequence and / or the second sequence can be superimposed with OFDM in the frequency domain to obtain the first signal and / or the second signal. For example, the second signal is LP-WUS, see Figure 3 , Figure 3 The schematic diagram of the generation process of LP-WUS is shown, based on N ′ At the timing of a LP-WUS, the LP-WUS is modulated using the OOK-4 modulation method, and the OOK ON symbol of the modulated LP-WUS corresponds to the second sequence, which is superimposed with OFDM before inverse fast Fourier transform (IFFT) processing (such as in the sub-carrier (SC) superposition stage).

[0068] In some implementations, if the first signal is LP-SS, the timing information of the first signal is determined based on the timing information of the third signal. For example, the time domain resources occupied by the first signal can be used by the terminal device to determine the timing information of the third signal, and the timing information can be frame / subframe / time slot / symbol timing information.

[0069] In some implementations, the third signal includes one or more of the following: synchronization signal / PBCH block (SSB); SSB burst set; primary synchronization signal (PSS) / secondary synchronization signal (SSS) in SSB.

[0070] In some implementations, the time domain resources occupied by the first signal overlap with the time domain resources occupied by the third signal, which can be understood as the first signal and the third signal are multiplexed in the same OFDM symbol, so the first signal and the third signal can share the same timing information. For example, the first signal is LP-SS, the third signal includes SSB, LP-SS and SSB are multiplexed in the same OFDM symbol, and the terminal device detects LP-SS and can determine the timing information according to the SSB configuration.

[0071] In some implementations, the time domain resources occupied by the first signal and the time domain resources occupied by the third signal may be partially overlapped or completely overlapped.

[0072] In some implementations, in order to achieve frequency domain multiplexing (FDMed) with SSB, the same number of OFDM symbols for transmitting LP-SS and SSB may be supported.

[0073] In some implementations, the first signal and the third signal have a quasi co-location (QCL) relationship. For example, the third signal includes an SSB burst set, the first signal is an LP-SS, the LP-SS is based on beam transmission, and an LP-SS set is defined, the set includes multiple LP-SSs (LP-SS#1, LP-SS#2, LP-SS#3, ..., LP-SS#M-1), the index of the LP-SS in the LP-SS set is 0, 1, ...M-1, M can be equal to or less than the number of SSBs in the SSB burst, assuming that the LP-SS and SSB with the same index are QCLed, the QCL relationship between the LP-SS and the SSB can be determined based on the index of the LP-SS in the LP-SS set, the network device can naturally transmit them with the same transmitter (transmitter, TX) beam, and the terminal device can also determine the associated SSB based on the detected LP-SS, and then determine the timing information of the SSB.

[0074] In some implementations, the information bits of the second signal are carried on superimposed OFDM, or in other words, the information bits of the second signal are carried on superimposed OFDM symbols. For example, the second signal is LP-WUS, the modulation method of the second signal is OOK, and a single second sequence is located at the duration of each OOK ON symbol or OFDM symbol. The OFDM-based LP-WUR can obtain the entire information bit of the LP-WUS through the superimposed OFDM. This method can randomize the superimposed sequence used over time, which may reduce the impact of interference between cells, thereby achieving better coverage performance. The second sequence can be predetermined from a plurality of sequences, such as determined from a plurality of candidate sequences, that is, a sequence is selected for each OOK ON symbol, and the OFDM-based LP-WUR obtains the information bits of the LP-WUS at least through the superimposed OFDM, and the superimposed OFDM carries all the information bits of the LP-WUS.

[0075] For ease of understanding, the following Figure 4 An example is given to introduce a scheme in which the superimposed OFDM carries the information bits of the second signal.

[0076] See also Figure 4 , assuming that the second signal is LP-WUS, the S sequence is the second sequence, and the S sequence can be one selected from multiple candidate sequences, such as a sequence selected from S(n). In each OFDM symbol, 4 bits can be carried by OFDM on two OOK ON symbols, where it is assumed that there are N information bits, LP-WUS supports OOK-4 modulation, and the encoding method is Manchester coding. Since the information bits are mapped to the superimposed OFDM, in this case, the OFDM-based receiver can only obtain information from the superimposed OFDM. Taking OOK-4 as an example, an LP-WUS carries N information bits and occupies N / 4 OFDM symbols. If the entire information of an LP-WUS includes 24 bits, a total of N / 4=6 OFDM symbols are occupied without repetition. Or the S sequence can also be a specific sequence, and only one candidate second sequence can be transmitted on each OOK ON symbol. The specific candidate second sequence can be fixed to map the same sequence to each OOK ON symbol, or a different second sequence can be mapped to each OOK ON symbol according to a predetermined rule. Both envelope detection based receivers and OFDM based receivers can detect LP-WUS, and all N information bits of LP-WUS are carried / modulated by OOK ON / OFF pattern in each OFDM symbol.

[0077] In some implementations, the information bits of the second signal are associated with one or more of the following: information content carried by the second signal; a coding rate of the second signal; the number of paging occasions (PO) of the second signal; the number of terminal devices indicated by the PO of the second signal; and the number of monitoring times of the second signal.

[0078] In some implementations, the information content carried by the second signal can be understood as the information content carried by the second signal for waking up the second receiver, and therefore, the information content carried by the second signal can also be referred to as "wake-up information". For example, if the second signal is LP-WUS, the information content carried by LP-WUS can be wake-up information for waking up the second receiver of a specific terminal device.

[0079] In some implementations, the coding rate of the second signal can be understood as the ratio of the useful part (non-redundant) in the data stream of the encoded second signal. For example, the second signal is LP-WUS, the modulation mode of LP-WUS is OOK, and the coding mode is Manchester coding. The ratio of OOK ON symbols after modulation and coding of LP-WUS is the coding rate of the second signal.

[0080] In some implementations, the PO number of the second signal can be understood as the PO number or PO subgroup number of the second signal.

[0081] In some implementations, the number of terminal devices indicated by the PO of the second signal can be understood as the number of terminal devices indicated by the PO of the second signal, or the number of terminal device groups indicated by the PO subgroup.

[0082] In some implementations, the number of monitoring times of the second signal can be understood as the number of times the terminal device can monitor the second signal.

[0083] In some implementations, the number of monitoring times of the second signal is associated with the number of low-power occasions (LO) and / or monitoring occasions (MO) of the second signal. For example, the second signal is LP-WUS, and LO can be understood as an opportunity for low-power signal transmission. Due to the characteristics of the LP-WUR system, the spectrum efficiency of LP-WUS is much lower than that of PDCCH. In this case, multiple monitoring occasions (ie, MO) for wake-up signals can be configured for different LOs associated with different terminal device subgroups. Associate paging early indication (PEI) and / or PO with MO instead of PO with LO. Each LP-WUS has one LO, and multiple LOs are supported for one LP-WUS. It is also possible that the LP-WUR system has only LO and no MO, or only MO and no LO. Or both are configured. The number of monitoring times of LP-WUS can be associated with the number of LOs and MOs, the number of LOs, or the number of MOs in the LO.

[0084] In some implementations, if the second sequence is superimposed with OFDM before encoding, the size of the information bit of the second signal is associated with the information content carried by the second signal. For example, if the second signal is LP-WUS, and the modulation mode of LP-WUS is OOK, then the number of OOK ON symbols of the modulated LP-WUS depends on the information content carried by LP-WUS. Therefore, the size of the information bit after the second sequence mapped by OOK ON symbol is superimposed with OFDM is also related to the information content carried by LP-WUS. The more OOK ON symbols of LP-WUS, the more superimposed OFDM transmission opportunities there are (one OOK-ON codeword can be regarded as one OFDM transmission opportunity). The wake-up information carried by LP-WUS will affect the coverage of OFDM. If the modulated LP-WUS does not have an OOK ON symbol (for example, the modulated LP-WUS is 0000), OFDM cannot be superimposed on the second sequence.

[0085] In some implementations, if the second sequence is superimposed with OFDM after encoding, the size of the information bits of the second signal is associated with the information content carried by the second signal and / or the coding rate of the second signal.

[0086] In some implementations, the size of the information bit of the second signal is associated with the PO indicated by the information carried by the second signal and / or the number of terminal devices indicated by the PO of the second signal. For example, the maximum value of the size of the information bit of the second signal is associated with the maximum number of POs or the maximum number of PO subgroups of the second signal.

[0087] In some implementations, for a terminal device in an RRC idle (RRC_IDLE) state / RRC deactivated (RRC_INACTIVE) state, the size of the information bit of the second signal is associated with the number of terminal devices indicated by the PO of the second signal and / or the number of monitoring times of the second signal. For example, if the second signal is an LP-WUS, the number of terminal devices indicated by the PO of the LP-WUS and the number of MOs in the LO of the LP-WUS can determine the size of the information bit of the LP-WUS.

[0088] In some implementations, the size of the information bit of the second signal is associated with the number of PO subgroups of the second signal. For example, the second signal is LP-WUS, the modulation mode of LP-WUS is OOK, and the size of the information bit of LP-WUS obtained by superimposing OFDM on the second sequence mapped by each OOK ON symbol is at least the maximum number of PO subgroups, such as 8, 16, 32, 64, etc.

[0089] In some implementations, the size of the information bit of the second signal is also associated with one or more of the following: network configuration information; the number of cells in the tracking area; the density of terminal devices in the cell; the size of the current arriving traffic. For example, if the second signal is LP-WUS, the size of the information bit of LP-WUS may depend on the number of cells in the tracking area, the density of terminal devices in the cell, the size of the current arriving traffic, etc.

[0090] In some implementations, a first association relationship exists between the first sequence and the second sequence.

[0091] In some implementations, the first association relationship is used to indicate one or more of the following: the first sequence is the same as the second sequence; the first sequence is different from the second sequence; the modulation order of the first sequence is the same as the modulation order of the second sequence; the modulation order of the first sequence is different from the modulation order of the second sequence; the modulation order of the first sequence is greater than or equal to the modulation order of the second sequence.

[0092] In some implementations, the first sequence is the same as the second sequence, that is, the first signal and the second signal may be generated by the same sequence.

[0093] In some implementations, the first sequence is different from the second sequence, that is, the first signal and the second signal may be generated by different sequences.

[0094] In some implementations, the modulation order of the first sequence and the adjustment order of the second sequence may be the same. For example, if the first signal is LP-SS, the second signal is LP-WUS, and the modulation modes of LP-WUS and LP-SS are both OOK, then the modulation order M1 of the first sequence corresponding to LP-SS and the adjustment order M2 of the second sequence corresponding to LP-WUS are always the same.

[0095] In some implementations, the modulation order of the first sequence may be different from the adjustment order of the second sequence. For example, if the first signal is LP-SS and the second signal is LP-WUS, and the modulation modes of LP-WUS and LP-SS are both OOK, then the modulation order M1 of the first sequence corresponding to LP-SS is different from the adjustment order M2 of the second sequence corresponding to LP-WUS.

[0096] In some implementations, the modulation order of the first sequence is greater than or equal to the modulation order of the second sequence, or in other words, the modulation order of the second sequence cannot be greater than the modulation order of the first sequence. For example, the first signal is LP-SS, the second signal is LP-WUS, the modulation modes of LP-WUS and LP-SS are both OOK, and the modulation order M1 of the first sequence corresponding to LP-SS and the adjustment order M2 of the second sequence corresponding to LP-WUS satisfy M1≥M2.

[0097] In some implementations, the modulation mode of the first signal and / or the second signal is OOK, and the data transmission rate of the first signal and / or the second signal can be adjusted by adjusting the modulation order and / or the sub-carrier space (SCS). For example, when the modulation order of OOK is 1, for OOK-1, each OFDM symbol can only transmit one OOK symbol. If different data transmission rates need to be supported, this can be achieved by adjusting the SCS. For another example, when the modulation order of OOK is M, for OOK-M, each OFDM symbol can transmit M OOK symbols. Different data transmission rates can be supported by adjusting the values ​​of M and / or SCS.

[0098] In some implementations, the data transmission rate of the first signal and / or the second signal may be determined based on the channel quality. For example, the second signal is LP-WUS, and in the actual transmission of LP-WUS, the performance of LP-WUS is different due to different channel qualities. When the channel quality is good, a higher data transmission rate may be used to transmit the LP-WUS, and when the channel quality is poor, a lower data transmission rate may be used to transmit the LP-WUS.

[0099] In some implementations, the first sequence and / or the second sequence is determined based on one or more of: a preconfigured sequence; a predefined sequence; or one or more candidate sequences.

[0100] In some implementations, the preconfigured sequence may be understood as a sequence of network device configurations.

[0101] In some implementations, the predefined sequence may be understood as a sequence defined by a protocol.

[0102] In some implementations, one or more candidate sequences may be understood as one or more candidate first sequences and / or second sequences.

[0103] In some implementations, candidate sequences are generated based on a base sequence.

[0104] In some implementations, the base sequence may be one or more of the following: a ZC sequence; a Gold sequence; an M sequence; a computer search sequence.

[0105] In some implementations, the candidate sequence is generated based on the base sequence. It can be understood that the candidate sequence is obtained by performing at least one of the following operations on the base sequence: cyclic shift; extension; truncation.

[0106] In some implementations, the candidate sequence is obtained by performing a cyclic shift operation on the base sequence. It can be understood that the candidate sequence is obtained by performing a cyclic shift operation on the base sequence. Circular shift is an operation that changes the position of sequence elements without changing the sequence generation mechanism. Circular shift can be implemented in hardware through a shift register to avoid additional complex calculations.

[0107] In some implementations, the circular shift operation may include a circular left shift and / or a circular right shift.

[0108] In some implementations, by changing the step size of the cyclic shift of the base sequence, multiple candidate sequences with different characteristics can be generated. By selecting different cyclic shift step sizes, it can help reduce the peak value of the cross-correlation between sequences.

[0109] In some implementations, the step size of the cyclic shift includes one or more.

[0110] In some implementations, the candidate sequence is obtained by extending the basic sequence. It can be understood that the candidate sequence is obtained by increasing the number of bits of the basic sequence.

[0111] In some implementations, the extension operation includes one or more of: cyclic extension; two's complement; decimation.

[0112] In some implementations, the candidate sequence is obtained by truncating the basic sequence. It can be understood that the candidate sequence is obtained by truncating the basic sequence by a specific length.

[0113] In some implementations, the candidate sequence is obtained by inserting zeros before and / or after the base sequence is extended, and the total number of zeros is determined by the formula N0=L-N; where L is the length of the candidate sequence and N is the length of the base sequence. For example, the base sequence is a ZC sequence X q , can be obtained by the formula Indicates, where q is the root sequence, N ZC For the length of each sequence, X q Insert zeros before expansion, and obtain the sequence s(n) = [0,0…,X q (0),…X q (N ZC ―1),0,0…0]n=0,1…L zc―1 , that is, in X q Zero padding is performed before and after, and the total number of zeros is L zc ―N zc , L zc is the length of the final candidate sequence.

[0114] In some implementations, the base sequence is a ZC sequence, and the candidate sequence is obtained by cyclically extending the ZC sequence. For example, the base sequence is a ZC sequence, which can be obtained by the formula Indicates that, q is the root sequence, N ZC For each sequence length, N ZC The value of can be an odd number (or prime number) such that N ZC Satisfy N ZC <L ZC ―2×G0,L ZC is the length of the candidate sequence, G0 is the value set by the system, G0 is related to the length of DFT / fast Fourier transform (FFT) and the result after modulation, the value of G0 is greater than or equal to 0, and the candidate sequence can be obtained by the formula S(n)=x q (n mod N ZC ) or by the formula S(n) = e jα x q (n mod N ZC ) is determined, where α is set by the system.

[0115] In some implementations, the base sequence is a ZC sequence, and the candidate sequence is obtained by cyclic shifting and extending the ZC sequence. For example, the base sequence is a ZC sequence, which can be obtained by the formula It means that after cyclic extension, the ZC sequence can obtain the sequence S(n)=x q (n mod N ZC )n=0,1,…L ZC ―1, S(n) can be obtained after cyclic shift to obtain the sequence S′(n)=x q ((n+C V )mod N ZC )n=0,1,…L ZC ―1, where C V is the step size of the cyclic shift. q Zero padding is performed to obtain the sequence s(n) = [0, 0…, X q (0),…X q (M ZC ―1),0,0…0]n=0,1…L zc―1 , that is, in X q Zero padding is performed before and after, and the total number of zeros is L zc ―N zc ; s(n) is then cyclically shifted and cyclically extended to obtain the candidate sequence s′(N)=[0,0…,Y q (0),…Y q (N ZC ―1),0,0…0]n=0,1…L zc―1 , where Y q (j) = x q ((j+C v )mod N ZC ))j=0,1,…L ZC ―1.

[0116] In some implementations, the base sequence is a ZC sequence, and the root sequence of the ZC sequence may include one or more, that is, the candidate sequence may be generated based on one or more ZC sequences with different root sequences.

[0117] In order to support multiple candidate sequences and to allow different cells to have different candidate sequences, in some implementations, different cyclic shift step sizes and root sequences of the ZC sequence can be used to generate multiple candidate sequences, or the same ZC sequence root sequence and different cyclic shift step sizes can be used to generate multiple candidate sequences. The selection of the root sequence of the ZC sequence will directly affect the cross-correlation characteristics between different candidate sequences. Candidate sequences generated by different root sequences have lower cross-correlation, which helps to reduce interference, while candidate sequences generated by the same root sequence but different cyclic shift step sizes are easy to distinguish at the receiving end. Generating candidate sequences using a combination of cyclic shift step sizes and root sequences of the ZC sequence helps to deal with different timing error situations.

[0118] For multiple supported candidate sequences, the cyclic shifts should be evenly distributed throughout the period to avoid concentration at certain positions leading to high cross-correlation. To cope with different timing error situations, in some implementations, the root sequence of the ZC and / or the step size of the cyclic shift may be combined according to the first rule.

[0119] In some implementations, the first rule is used to indicate that the step sizes of different cyclic shifts of the same root sequence are preferentially configured, which helps to provide good cross-correlation performance while saving spectrum resources.

[0120] In some implementations, the first rule is used to indicate that different root sequences are allocated to adjacent cells to ensure that the mutual correlation between candidate sequences corresponding to different cells is low, thereby reducing interference between cells.

[0121] In some implementations, the first rule indicates that the interval between the indexes of the root sequences is greater than the minimum interval that ensures low cross-correlation between different root sequences. For example, the selection of the indexes q1 and q2 of the two root sequences should satisfy |q1―q2|>Δq, where Δq is the minimum interval that ensures low cross-correlation between different root sequences.

[0122] In some implementations, the root sequence of the ZC sequence and the step size of the cyclic shift may be configured by a network device. For example, the network device is a gNB, and the gNB configures the root sequence of the ZC sequence and the step size of the cyclic shift to be used.

[0123] In some implementations, the root sequence and / or the step size of the cyclic shift of the ZC sequence is determined based on one or more of: the modulation order of the first signal and / or the second signal; the length of the basic sequence; network load information; channel state information; inter-cell interference conditions; and timing error of the terminal device.

[0124] The configuration of the cyclic shift can generate multiple orthogonal subsequences on the same root sequence, and the step size of the cyclic shift should ensure that the cross-correlation between different candidate sequences is minimized. In some implementations, the step size of the cyclic shift is determined based on the modulation order of the first signal and / or the second signal and the length of the base sequence.

[0125] In some implementations, the base sequence is a ZC sequence, and the step size of the cyclic shift satisfies Among them, C V is the step size of the cyclic shift, N ZC is the length of the ZC sequence, and M is the modulation order of the first signal and / or the second signal.

[0126] In some implementations, the root sequence and the step size of the cyclic shift of the ZC sequence are determined based on network load information and channel state information. For example, in actual deployment, the gNB adjusts the root sequence and the step size of the cyclic shift according to real-time network load information and channel state information.

[0127] In some implementations, the root sequence of the ZC sequence is determined based on the inter-cell interference situation. For example, the gNB assigns different root sequences based on the inter-cell interference situation.

[0128] In some implementations, the step size of the ZC sequence cyclic shift is determined based on the timing error of the terminal device. For example, for a terminal device with a large timing error, the step size of the cyclic shift is adjusted to optimize the receiving performance of the terminal device.

[0129] In some implementations, the base sequence is a Gold sequence, and the candidate sequence is obtained by truncating the Gold sequence. For example, the candidate sequence is a sequence obtained by truncating a Gold sequence having a length of 127 or 231.

[0130] In some implementations, the base sequence is an M sequence. The M sequence has good cross-correlation properties, but the cost is that the number of available sequences is limited (fewer sequences than the Gold sequence) and the length of consecutive "0"s in the M sequence is limited.

[0131] In some implementations, the M sequence is generated based on one or more generator polynomials. For example, according to system requirements, a suitable M sequence generator polynomial is selected and an M sequence S = [s0, s1, s2, ..., s N―1 ] The length of the M sequence N = 2 n ―1, where n is the number of register levels. For another example, if the generator polynomial is x 3 +x+1, then n=3, the length of the generated M sequence N=7, and the M sequence is generated by a linear feedback shift register (LFSR).

[0132] In some implementations, the base sequence is an M sequence, and the candidate sequence is obtained by cyclic shifting the M sequence. For example, by performing different cyclic shift operations on the M sequence, multiple low-complexity sequences with good autocorrelation and cross-correlation characteristics can be generated. This method can meet the needs of multi-user environments or different symbols while maintaining simple hardware implementation. For another example, for the initial M sequence S = [s0, s1, s2, ..., s N―1 ] is cyclically shifted, and the shifted sequence S(k) is expressed as: S(k) = [s k ,s k+1 ,…,s N―1 ,s0,s1,…,s k―1], by selecting different k values ​​as the step size of the cyclic shift, such as k=N / 4, or k=N / 2, a group of candidate sequences with similar autocorrelation characteristics but lower cross-correlation can be generated. In the application of the first signal and / or the second signal, keeping the number of "0" and "1" in the sequence close to balance can improve power balance and detection performance. Therefore, the shifted sequence also basically maintains this balance. The sequence generated by the cyclic shift operation keeps the number of "0" and "1" in a balanced state. This feature ensures that the envelope of the first signal and / or the second signal based on OOK modulation is also centered on the average value, which is conducive to low-complexity envelope detection.

[0133] To obtain a lower cross-correlation peak, in some implementations, the step size of the cyclic shift of the M sequence is determined based on the length of the M sequence.

[0134] In some implementations, the step size of the cyclic shift of the M sequence satisfies Among them, C V is the step size of the cyclic shift of the M sequence, N M is the length of the M sequence.

[0135] In some implementations, the step size of the cyclic shift of the M sequence may be an equally spaced step size to ensure uniform distribution of the sequence.

[0136] In some implementations, the step size of the cyclic shift of the M sequence can be a prime number. A prime step size can reduce the repetitive patterns between sequences and help reduce the cross-correlation peak.

[0137] In order to make full use of the power of the network device, the power level in each OFDM symbol for transmitting the first signal and / or the second signal should be strictly kept the same. For the design of the first sequence and / or the second sequence, in order to obtain multiple candidate sequences, in some implementations, the M sequence can be generated based on the step size of the cyclic shift of multiple M sequences and / or multiple generating polynomials. In actual implementation, the use of multiple different cyclic shift step sizes can be preferred to different generating polynomials to obtain better correlation and limit the implementation to a single LFSR.

[0138] In some implementations, the base sequence is an M sequence, and the candidate sequence is obtained by extending or truncating the M sequence. For example, the M sequence is extended or truncated by cyclic extension, binary complement, decimation, etc. to generate the candidate sequence.

[0139] In some implementations, the base sequence is an M-sequence, and the candidate sequence is the M-sequence with cyclic shift applied before or after extension / truncation to generate different sequences with different correlation properties.

[0140] In order to achieve timing synchronization with envelope detection, the first signal should have an envelope with good autocorrelation characteristics so that LR can find timing by obtaining the peak position through correlation operation. In some implementations, the first signal is LP-SS, the modulation mode of LP-SS is OOK, and the first sequence corresponding to LP-SS is generated based on the M sequence, that is, the LP-SS can be modulated at the input end using the OOK modulation mode with good autocorrelation characteristics, and the first sequence generated based on the M sequence is mapped to the OOK ON symbol.

[0141] In some implementations, the length of the first sequence and / or the second sequence is associated with one or more of the following: the number of transmission resource blocks of the first signal and / or the second signal; the modulation order of the first signal and / or the second signal; the length of the basic sequence; the subcarrier spacing; the channel state information; the mobility of the terminal device; the power consumption of the terminal device; and the detection requirements of the terminal device.

[0142] In some implementations, the length of the first sequence and / or the second sequence is associated with the modulation order of the first signal and / or the second signal. For example, the modulation method of the first signal may support OOK-1, OOK-4, ..., OOK-M. The modulation order of OOK-M is considered to be M=1, 2, 4, or M=1, 2, 4, 16 or other values. If the first signal supports OOK modulation with multiple different M values, the network device may be configured with a first sequence for a serving cell and multiple first sequences for a non-serving cell. Among them, different first sequences may have different OOK modulations with different M values. Therefore, for each M value, one or more first sequence lengths can be supported.

[0143] In some implementations, the length of the first sequence and / or the second sequence is associated with the modulation order of the first signal and / or the second signal. It can be understood that the value range of the length of the first sequence and / or the second sequence is determined based on the modulation order of the first signal.

[0144] In some implementations, the length of the first sequence is associated with the modulation order of the first signal, and there is a second correlation relationship between the length of the first sequence and the modulation order of the first signal, and the second correlation relationship is used to indicate one or more of the following: the modulation order of a first signal corresponds to the length of multiple first sequences; the modulation orders of multiple first signals correspond to the length of a first sequence; the modulation order of a first signal corresponds to the length of a first sequence.

[0145] In some implementations, the modulation order of a first signal corresponds to the length of multiple first sequences. For example, if the modulation order of the first signal is M, the length of the first sequence ranges from L = {4*M, 6*M, 8*M, 12*M}. Specifically, if the value of M is 1, the length of the first sequence ranges from L = {4, 6, 8}; if the value of M is 2, the length of the first sequence ranges from L = {8, 12, 16, 24}; if the value of M is 4, the length of the first sequence ranges from L = {16, 24, 32, 56}.

[0146] In some implementations, the modulation order of a first signal corresponds to the length of a first sequence, or in other words, the length of the first sequence corresponds one-to-one to the modulation order of the first signal. For example, the modulation order of the first signal is M, and the length of the first sequence is L. When determining L corresponding to different M values, the number of OFDM symbols used to transmit the first signal can remain unchanged for different M values, regardless of the M value. This is also to avoid the terminal device blindly detecting the first signal with different numbers of OFDM symbols in idle / inactive mode. Therefore, the corresponding L value when M is 1, 2 or 4 can be scaled with the M value so that the number of OFDM symbols for different M values ​​is the same. For another example, if M is 1, the length of the selected first sequence is L1=8, and accordingly, when M is 2, the length of the first sequence is selected as L2, and when M is 4, the length of the first sequence is selected as L3, such as L2=16 and L3=32.

[0147] In some implementations, the modulation orders of the plurality of first signals correspond to the length of a first sequence. For example, the modulation order of the first signal is M, the length of the first sequence is L, and for different M values, L may remain unchanged.

[0148] In some implementations, the length of the first sequence and / or the second sequence is associated with the modulation order of the first signal and / or the second signal and the number of transmission resource blocks of the first signal and / or the second signal, that is, the length of the first sequence and / or the second sequence is determined based on the modulation order of the first signal and / or the second signal and the number of transmission resource blocks of the first signal and / or the second signal.

[0149] In some implementations, the base sequence is a ZC sequence, and the length of the first sequence and / or the second sequence satisfies at least one of the following: ZC =2 k / M,2 k ≤12*X;L ZC=(2*X) / M; where M is the modulation order of the first signal and / or the second signal, and X is the number of transmission resource blocks of the first signal and / or the second signal. For example, the modulation order of the second signal is M, the number of transmission resource blocks (RBs) of the second signal is X, the basic sequence is generated based on the ZC sequence, and the length of the second sequence is calculated by the formula L ZC =2 k / M confirms, where 2 k ≤12*X, the value of M can be 1, 2, 4 or other even numbers. For another example, the length of the second sequence is calculated by the formula L ZC =(12*X) / M.

[0150] In some implementations, the length of the first sequence and / or the second sequence is associated with the modulation order of the first signal and / or the second signal and the length of the base sequence. For example, the modulation order of the second signal is M, the base sequence is a ZC sequence, and the length of the ZC is N. ZC If the value of M is 1, N ZC is a given prime number, then the length of the second sequence satisfies N ZC <L ZC ; If the value of M is 2 or 4, N ZC is a given prime number, then the length of the second sequence satisfies N ZC <L ZC ―2*G0, where G0 is the value set by the system.

[0151] In some implementations, the length of the first sequence and / or the second sequence is associated with the subcarrier spacing. For example, the length of the first sequence is L. In a multi-carrier system, different SCSs will affect the signal bandwidth and time resolution of each subcarrier, so the configuration of the L value needs to adapt to different SCSs to optimize the detection performance.

[0152] In some implementations, the length of the first sequence and / or the second sequence is associated with the subcarrier spacing, which can be understood as follows: the length of the first sequence and / or the second sequence is determined based on a configuration strategy, and the configuration strategy is used to indicate one or more of the following: an SCS value of 15kHz, which is suitable for a first signal and / or a second signal with low bandwidth and long symbol time, and is suitable for a longer L value (such as L=24 or L=32, or 8*M, 12*M) to smooth signal detection; an SCS value of 30kHz, which is suitable for application scenarios with medium bandwidth, and a medium-length L value (such as L=8 or L=16, 4*M, 6*M) can be used to balance bandwidth and detection accuracy; an SCS value of 60kHz, which is suitable for a first signal and / or a second signal with high-speed transmission and short symbol time, and is suitable for a shorter L value (such as L=4 or L=6) to ensure fast detection and low delay; wherein, M is the modulation order of the first signal and / or the second signal.

[0153] In some implementations, the lengths of the first sequence and / or the second sequence are associated with channel state information and subcarrier spacing. For example, a network device can monitor channel conditions and dynamically adjust the lengths of the first sequence and / or the second sequence to ensure optimal detection performance of the first signal and / or the second signal at a terminal device under different SCSs.

[0154] In some implementations, the lengths of the first sequence and / or the second sequence are associated with channel state information. For example, if the first signal is LP-SS, in the case of inaccurate channel estimation, a longer length of the first sequence is selected to enhance the autocorrelation performance of LP-SS, thereby improving synchronization accuracy. As another example, the channel state information includes signal-to-noise ratio and interference intensity, and two thresholds are defined, namely the signal-to-noise ratio threshold SNRthreshold and the interference intensity threshold threshold. If SNR≥SNRthreshold and I≤threshold, the channel state is considered to be "low noise / low interference"; if SNR<SNRthreshold or I>threshold, the channel state is considered to be "high noise / high interference". Based on the above judgment of the channel state, a shorter length of the first sequence is selected in a low-noise environment, or a longer length of the first sequence is selected in a high-interference environment.

[0155] In some implementations, the lengths of the first sequence and / or the second sequence are associated with channel state information and the detection requirements of a terminal device. For example, a network device can dynamically select the optimal lengths of the first sequence and / or the second sequence according to real-time channel conditions and the detection requirements of the terminal device.

[0156] Since a moving terminal device can cause Doppler frequency shift, which shifts the spectrum of the first signal and / or the second signal, resulting in a decrease in the detection accuracy of the terminal device. In some implementations, the lengths of the first sequence and / or the second sequence are associated with the mobility of the terminal device. For example, high mobility (such as a terminal device moving at high speed) may cause rapid frequency shift. Therefore, in a high-mobility scenario, selecting a longer length of the first sequence and / or the second sequence helps to reduce the impact of the Doppler effect on detection.

[0157] In some implementations, the lengths of the first sequence and / or the second sequence are associated with the power consumption of a terminal device. For example, in a power-constrained environment (such as a battery-powered internet of things (IoT) device as the terminal device), since a longer sequence will increase the computational complexity and power consumption, selecting a shorter length of the first sequence and / or the second sequence helps to extend the battery life of the terminal device.

[0158] In some implementations, the length of the first sequence and / or the second sequence is associated with the channel state information and the mobility of the terminal device, or in other words, the length of the first sequence and / or the second sequence is associated with the weighted sum of the channel state information and the mobility of the terminal device. For example, the signal state information includes the signal-to-noise ratio, the interference intensity, and the multipath effect, and the weights of the signal-to-noise ratio, the interference intensity, the multipath effect, and the mobility of the terminal device are defined respectively, and the weighted sum of the four factors is used to determine the length of the first sequence and / or the second sequence.

[0159] In some implementations, the weight of the channel state information and the mobility of the terminal device may be determined based on application requirements.

[0160] In some implementations, application requirements can be understood as application scenarios of communication systems. For example, application requirements can be application scenarios in 5G systems (such as enhanced mobile broadband (eMBB), ultra-reliable low-latency communications (uRLLC) and massive machine type communications (mMTC)), or future 6G application scenarios (such as synaesthesia).

[0161] In some implementations, the modulation order and the length of the first sequence and / or the second sequence may be combined based on the SCC to meet different detection requirements. For example, the modulation order of the first signal is M, and for different SCC values ​​(such as 15kHz and 30kHz), the same M and different lengths of the first sequence are supported, or different M and lengths of the first sequence are supported, or different M and the same length of the first sequence are supported.

[0162] Channel coding can use redundant information to combat the fading channel of LP-WUR, and can improve the detection and decoding performance of the first signal and / or the second signal. Usually, channel coding schemes require high-complexity decoding algorithms (i.e., Polar codes, low-density parity-check codes (LDPC codes)) and high power consumption to improve signal detection and decoding performance.

[0163] In some implementations, the encoding method of the first signal and / or the second signal can be Manchester coding. Manchester coding is a simple solution that can provide a balanced sequence with an equal number of 0s and 1s and a finite length of continuous zeros. Manchester coding systematically forces balanced power in each OFDM symbol and each ON symbol of any modulation order, ensuring full utilization of the power of the network device and helping automatic gain control (AGC) tracking. In the case of correlation mismatch, the autocorrelation function of the Manchester coded sequence is related to the autocorrelation function of the bipolar sequence before Manchester coding, so Manchester coding will systematically tend to create sequences with narrower autocorrelation main lobes, which is relevant to the first signal simulation assumption of the small detection window considered.

[0164] For ease of understanding, the following describes an example of encoding the first signal using Manchester coding.

[0165] Assume that the first signal is LP-SS, and the LP-SS after OOK modulation is a binary sequence of length L of 4. The first sequence is determined based on the candidate sequence, and the candidate sequence is a binary sequence of length L. m The M sequence M[n] is obtained after expansion, truncation, cyclic shift, extraction and other operations. The candidate sequence before Manchester coding can be written as n=0,…,L'-1, Among them, define a set of element groups, (f,c b ,c a ,d), f∈{0,1} returns either a sequence or its binary complement, c a ∈{0,…,L m ―1} is the shift step before expansion / truncation, c b ∈{0,…,L'―1} is the shift step after expansion / truncation, d is the decimation, where gcd(d,L') = 1. If the first sequence is Manchester coded, then L' = L / 2, if not, then L' = L. As all possible sequences are generated, sequences with similar autocorrelation characteristics are selected to provide uniform timing performance between cells. Since the timing estimation is performed within a smaller search window, the terminal device can search for sequences with less correlation around the main peak to reduce the main lobe width, and then minimize the peak sidelobes in the rest of the autocorrelation profile, further minimizing the maximum cross-correlation.

[0166] In some implementations, when the first receiver of the terminal device receives the second signal, if the subgroup indicated by the received part of the second signal does not match the subgroup of the terminal device, the terminal device stops receiving subsequent second signals. For example, the second signal is LP-WUS, and the modulation mode of the second signal is OOK, see Figure 4 , if one LP-WUS can be composed of multiple OFDM symbols, no matter how long the bit stream is, it can be processed and transmitted OFDM symbol by OFDM symbol. On the first receiver side, the LP-WUR demodulates the OOK signal or processes the same set of sequences used to generate the pre-DFT sequence at each OFDM symbol. The LP-WUR does not need to buffer all the resources of the LP-WUS. Since the subgroup identity (identity, ID) indicated by the LP-WUS is known in advance by the terminal device, if the terminal device finds that the subgroup indicated by the bit of the LP-WUS received in the first few LP-WUS opportunities does not match its own subgroup identifier, the terminal device can stop receiving subsequent LP-WUS opportunities to save power.

[0167] When superimposing OFDM, in order to ensure that the total power level of the first signal and / or the second signal is consistent, in some implementations, the power of the first signal and / or the second signal is allocated based on one or more of the following: activated subcarriers; OFDM symbol positions; peak to average power ratio (PAPR) detection results.

[0168] In some implementations, the power of the first signal and / or the second signal is evenly distributed on the activated subcarriers. For example, the modulation mode of the first signal is OOK. In order to evenly distribute the total power of the first signal on all activated subcarriers, it is ensured that the total power of the ON symbol of OOK on all subcarriers is equal to avoid concentration on a single or a few subcarriers, thereby reducing the peak power and maintaining the consistency of detection performance. Assume that the total power is P total , and there are N on subcarriers are activated, then the power of each activated subcarrier is: P sub =P total / N on , equal power P is allocated to each activated subcarrier sub This approach ensures that the total power of all activated subcarriers is stable at P during the entire OFDM frame. total Within.

[0169] In some implementations, the power of the first signal and / or the second signal is determined based on the symbol position of OFDM. For example, the modulation mode of the first signal is OOK. In multi-symbol OFDM, the power is dynamically adjusted according to the position of the symbol to ensure smooth power changes between the ON symbol and the OFF symbol of OOK and to prevent detection errors caused by instantaneous power changes. Specifically, the total power of the first signal can be allocated to each OFDM symbol frame, and the power can be adjusted in different frames according to the frequency deviation to make it uniform.

[0170] In some implementations, the power of a symbol frame for transmitting the first signal and / or the second signal is calculated by the formula p=α*p′+(1-α)*p total / N on Determine; where α is the smoothing factor, p′ is the power of the previous symbol frame, and p total is the total power of the first signal and / or the second signal, N on is the number of activated subcarriers.

[0171] In some implementations, the value of the smoothing factor α can be adjusted according to demand, and is generally recommended to be between 0.8 and 0.9 to avoid drastic power changes.

[0172] In some implementations, the power of the first signal and / or the second signal is allocated based on the PAPR detection result. For example, PAPR detection is performed on each symbol frame, and if the power peak of some subcarriers exceeds a set threshold, peak clipping is performed.

[0173] In some implementations, peak clipping can be achieved by limiting the upper limit of the power of a single subcarrier, or reallocating the power of a high-power subcarrier to other low-power subcarriers.

[0174] In some implementations, the power distribution after peak clipping should be evenly distributed within the symbol frame to avoid abnormal prominence of the power of certain subcarriers in the frequency domain.

[0175] In some implementations, the power after peak clipping is distributed according to the subcarrier number, and the power is distributed to both sides in a decreasing or increasing manner, such as taking the central subcarrier as a reference and gradually reducing the power toward the edge.

[0176] In some implementations, the structure of the OFDM symbol for transmitting the first signal and / or the second signal is configured by the network device, and the OFDM symbol includes one or more intervals. Figure 5 , Figure 5The structure of the OFDM symbol for transmitting the second signal is shown. The second signal is obtained by superimposing the second sequence on the time domain or frequency domain of OFDM. Taking the modulation mode of the second signal as OOK-4 as an example, gaps are inserted at the beginning and end of each OOK symbol of OOK-4 (example a), that is, a gap with a length of G0 is added at the beginning and end of each OOK character. The value of G0 is determined by the maximum value of the time error before the second signal is detected. G0 can suppress the degradation of the second signal detection performance caused by the large residual time error. The maximum value of the time error before the second signal is detected can determine the different positions of G0, such as the four examples a, b, c, and d. Different time errors can lead to different symbol structures.

[0177] In some implementations, the network device may configure one or more OFDM symbol structures. For example, the network device may configure a fixed OFDM symbol structure, such as Figure 5 Example a in FIG. 1. For another example, the network device configures multiple OFDM symbol structures and selects the OFDM symbol structure based on the time error before the second signal is detected.

[0178] In some implementations, the first signal carries cell identity information.

[0179] In some implementations, the cell identity information may be a cell ID. For example, the first signal is an LP-SS, and the LP-SS carries a cell ID. In the LP-SS transmission based on predefined rules, the terminal device may select any cell, such as in the cell (re)selection process, the terminal device may potentially determine the cell setting based on the cell ID carried by the LP-SS received by any adjacent non-serving cell.

[0180] In some implementations, the first signal carries the cell identity information, which can be understood as the information module after the preamble of the first signal carries the cell ID to trigger sequence detection. Figure 6 In the information module of the first signal, the cell ID is carried.

[0181] In some implementations, the first signal carries the cell identity information, which can be understood as the information module after the preamble of the first signal carries the truncated cell ID. Figure 6 The information module of the first signal is used to carry the truncated cell ID information through 4 binary sequences, connecting the fixed known preamble code with the truncated cell ID information module.

[0182] In some implementations, before the terminal device receives the first signal and / or the second signal, the terminal device may receive first information sent by the network device, and the first information is used to indicate the update of the first sequence and / or the second sequence. Accordingly, before the network device sends the first signal and / or the second signal, the network device sends the first information to the terminal device. For example, the first signal is LP-SS. When configuring the first sequence corresponding to LP-SS, the network device can dynamically change the first sequence. The network device can indicate the update of the first sequence to the terminal device through the first information before sending LP-SS.

[0183] In some implementations, the first information may be carried in downlink control information (DCI) and / or an RRC message.

[0184] Combination of the above Figures 1 to 6 , describes the method embodiment of the present application in detail, and the following is combined with Figures 7 to 9 , describes the device embodiment of the present application in detail. It should be understood that the description of the method embodiment corresponds to the description of the device embodiment, so the parts not described in detail can refer to the previous method embodiment.

[0185] Figure 7 It is a schematic diagram of a terminal device according to an embodiment of the present application. Figure 7 The terminal device 700 shown includes: a receiving unit 710 .

[0186] The receiving unit 710 is used to receive one or more of the following sent by a network device: a first signal and a second signal, the second signal being received based on the first signal; the second signal; wherein the first signal and / or the second signal is obtained by superimposing a first sequence and / or a second sequence on the time domain or frequency domain of orthogonal frequency division multiplexing OFDM, the first signal and / or the second signal is received by a first receiver of the terminal device, and the power consumption of the first receiver is lower than the power consumption of the second receiver of the terminal device.

[0187] In some implementations, the first signal is a low power synchronization signal LP-SS.

[0188] In some implementations, the second signal is a low power consumption wake-up signal LP-WUS.

[0189] In some implementations, the timing information of the first signal is determined based on the timing information of the third signal; and / or the time domain resources occupied by the first signal overlap with the time domain resources occupied by the third signal; and / or the first signal and the third signal have a quasi-co-location QCL relationship; and / or the third signal includes one or more of the following: synchronization signal broadcast channel block SSB; SSB burst set; primary synchronization signal PSS / secondary synchronization signal SSS in SSB.

[0190] In some implementations, the information bits of the second signal are carried in superimposed OFDM, and the size of the information bits is associated with one or more of the following: the information content carried by the second signal; the coding rate of the second signal; the number of paging occasions PO of the second signal; the number of terminal devices indicated by the PO; and the number of monitoring times of the second signal.

[0191] In some implementations, the size of the information bit is also associated with one or more of the following: network configuration information; the number of cells in the tracking area; the density of terminal devices in the cell; and the size of the currently arriving traffic.

[0192] In some implementations, there is a first association relationship between the first sequence and the second sequence, and the first association relationship is used to indicate one or more of the following: the first sequence is the same as the second sequence; the first sequence is different from the second sequence; the modulation order of the first sequence is the same as the modulation order of the second sequence; the modulation order of the first sequence is different from the modulation order of the second sequence; the modulation order of the first sequence is greater than or equal to the modulation order of the second sequence.

[0193] In some implementations, the first sequence and / or the second sequence is determined based on one or more of the following: a preconfigured sequence; a predefined sequence; or one or more candidate sequences.

[0194] In some implementations, the candidate sequence is obtained by subjecting the base sequence to at least one of the following operations: cyclic shift; extension; truncation.

[0195] In some implementations, the candidate sequence is obtained by inserting zeros before and / or after the base sequence is extended, and the total number of zeros is determined by the formula N0=L-N; where L is the length of the candidate sequence and N is the length of the base sequence.

[0196] In some implementations, the step size of the cyclic shift includes one or more.

[0197] In some implementations, the base sequence is a ZC sequence, and the root sequence of the ZC sequence includes one or more.

[0198] In some implementations, the root sequence and / or the step size of the cyclic shift of the ZC sequence is determined based on one or more of: the modulation order of the first signal and / or the second signal; the length of the basic sequence; network load information; channel state information; inter-cell interference conditions; and timing error of the terminal device.

[0199] In some implementations, the step size of the cyclic shift is given by the formula Determine; among them, N ZC is the length of the ZC sequence, and M is the modulation order of the first signal and / or the second signal.

[0200] In some implementations, the base sequence is an M sequence, and the M sequence is generated based on one or more generator polynomials.

[0201] In some implementations, the step size of the cyclic shift of the M sequence satisfies Among them, C V is the step size of the cyclic shift of the M sequence, N M is the length of the M sequence.

[0202] In some implementations, the length of the first sequence and / or the second sequence is associated with one or more of the following: the number of transmission resource blocks of the first signal and / or the second signal; the modulation order of the first signal and / or the second signal; the length of the basic sequence; the subcarrier spacing; the channel state information; the mobility of the terminal device; the power consumption of the terminal device; and the detection requirements of the terminal device.

[0203] In some implementations, the base sequence is a ZC sequence, and the length of the first sequence and / or the second sequence satisfies at least one of the following: ZC =2 k / M,2 k ≤12*X;L ZC =(2*X) / M; wherein M is the modulation order of the first signal and / or the second signal, and X is the number of transmission resource blocks of the first signal and / or the second signal.

[0204] In some implementations, there is a second association relationship between the length of the first sequence and the modulation order of the first signal, and the second association relationship is used to indicate one or more of the following: a modulation order of the first signal corresponds to the lengths of multiple first sequences; multiple modulation orders of the first signals correspond to the length of one first sequence; and a modulation order of the first signal corresponds to the length of one first sequence.

[0205] In some implementations, the power of the first signal and / or the second signal is allocated based on one or more of the following: activated subcarriers; symbol positions of the OFDM; peak-to-average power ratio (PAPR) detection results.

[0206] In some implementations, the power of the first signal and / or the second signal is evenly distributed on the activated subcarriers.

[0207] In some implementations, the power of a symbol frame for transmitting the first signal and / or the second signal is calculated by the formula p=α*p′+(1-α)*p total / N on Determine; where α is a smoothing factor, p′ is the power of the previous symbol frame, p total is the total power of the first signal and / or the second signal, N on is the number of activated subcarriers.

[0208] In some implementations, the modulation method of the first signal and / or the second signal is binary amplitude shift keying (OOK).

[0209] In some implementations, the first signal and / or the second signal is encoded using Manchester encoding.

[0210] In some implementations, the structure of the OFDM symbol for transmitting the second signal and / or the second signal is configured by the network device, and the OFDM symbol includes one or more intervals.

[0211] In some implementations, the first signal carries cell identity information.

[0212] In some implementations, before the receiving unit receives the first signal and / or the second signal, the terminal device also includes: the receiving unit 710 is also used to receive first information sent by the network device, and the first information is used to indicate an update of the first sequence and / or the second sequence.

[0213] Figure 8 It is a schematic diagram of a network device according to an embodiment of the present application. Figure 8 The network device 800 shown includes: a sending unit 810 .

[0214] The sending unit 810 is used to send one or more of the following to the terminal device: a first signal and a second signal, the second signal is received based on the first signal; the second signal; wherein the first signal and / or the second signal is obtained by superimposing a first sequence and / or a second sequence on the time domain or frequency domain of orthogonal frequency division multiplexing OFDM, the first signal and / or the second signal is received by a first receiver of the terminal device, and the power consumption of the first receiver is lower than the power consumption of the second receiver of the terminal device.

[0215] In some implementations, the first signal is a low power synchronization signal LP-SS.

[0216] In some implementations, the second signal is a low power consumption wake-up signal LP-WUS.

[0217] In some implementations, the timing information of the first signal is determined based on the timing information of the third signal; and / or the time domain resources occupied by the first signal overlap with the time domain resources occupied by the third signal; and / or the first signal and the third signal have a quasi-co-location QCL relationship; and / or the third signal includes one or more of the following: synchronization signal broadcast channel block SSB; SSB burst set; primary synchronization signal PSS / secondary synchronization signal SSS in SSB.

[0218] In some implementations, the information bits of the second signal are carried in superimposed OFDM, and the size of the information bits is associated with one or more of the following: the information content carried by the second signal; the coding rate of the second signal; the number of paging occasions PO of the second signal; the number of terminal devices indicated by the PO; and the number of monitoring times of the second signal.

[0219] In some implementations, the size of the information bit is also associated with one or more of the following: network configuration information; the number of cells in the tracking area; the density of terminal devices in the cell; and the size of the currently arriving traffic.

[0220] In some implementations, there is a first association relationship between the first sequence and the second sequence, and the first association relationship is used to indicate one or more of the following: the first sequence is the same as the second sequence; the first sequence is different from the second sequence; the modulation order of the first sequence is the same as the modulation order of the second sequence; the modulation order of the first sequence is different from the modulation order of the second sequence; the modulation order of the first sequence is greater than or equal to the modulation order of the second sequence.

[0221] In some implementations, the first sequence and / or the second sequence is determined based on one or more of the following: a preconfigured sequence; a predefined sequence; or one or more candidate sequences.

[0222] In some implementations, the candidate sequence is obtained by subjecting the base sequence to at least one of the following operations: cyclic shift; extension; truncation.

[0223] In some implementations, the candidate sequence is obtained by inserting zeros before and / or after the base sequence is extended, and the total number of zeros is determined by the formula N0=L-N; where L is the length of the candidate sequence and N is the length of the base sequence.

[0224] In some implementations, the step size of the cyclic shift includes one or more.

[0225] In some implementations, the base sequence is a ZC sequence, and the root sequence of the ZC sequence includes one or more.

[0226] In some implementations, the root sequence and / or the step size of the cyclic shift of the ZC sequence is determined based on one or more of: the modulation order of the first signal and / or the second signal; the length of the basic sequence; network load information; channel state information; inter-cell interference conditions; and timing error of the terminal device.

[0227] In some implementations, the step size of the cyclic shift is given by the formula Determine; among them, N ZC is the length of the ZC sequence, and M is the modulation order of the first signal and / or the second signal.

[0228] In some implementations, the base sequence is an M sequence, and the M sequence is generated based on one or more generator polynomials.

[0229] In some implementations, the step size of the cyclic shift of the M sequence satisfies Among them, C V is the step size of the cyclic shift of the M sequence, N M is the length of the M sequence.

[0230] In some implementations, the length of the first sequence and / or the second sequence is associated with one or more of the following: the number of transmission resource blocks of the first signal and / or the second signal; the modulation order of the first signal and / or the second signal; the length of the basic sequence; the subcarrier spacing; the channel state information; the mobility of the terminal device; the power consumption of the terminal device; and the detection requirements of the terminal device.

[0231] In some implementations, the base sequence is a ZC sequence, and the length of the first sequence and / or the second sequence satisfies at least one of the following: ZC =2 k / M,2 k ≤12*X;L ZC =(2*X) / M; wherein M is the modulation order of the first signal and / or the second signal, and X is the number of transmission resource blocks of the first signal and / or the second signal.

[0232] In some implementations, there is a second association relationship between the length of the first sequence and the modulation order of the first signal, and the second association relationship is used to indicate one or more of the following: a modulation order of the first signal corresponds to the lengths of multiple first sequences; multiple modulation orders of the first signals correspond to the length of one first sequence; and a modulation order of the first signal corresponds to the length of one first sequence.

[0233] In some implementations, the power of the first signal and / or the second signal is allocated based on one or more of the following: activated subcarriers; symbol positions of the OFDM; peak-to-average power ratio (PAPR) detection results.

[0234] In some implementations, the power of the first signal and / or the second signal is evenly distributed on the activated subcarriers.

[0235] In some implementations, the power of a symbol frame for transmitting the first signal and / or the second signal is calculated by the formula p=α*p′+(1-α)*p total / N on Determine; where α is a smoothing factor, p′ is the power of the previous symbol frame, p total is the total power of the first signal and / or the second signal, N on is the number of activated subcarriers.

[0236] In some implementations, the modulation method of the first signal and / or the second signal is binary amplitude shift keying (OOK).

[0237] In some implementations, the first signal and / or the second signal is encoded using Manchester encoding.

[0238] In some implementations, the structure of the OFDM symbol for transmitting the second signal and / or the second signal is configured by the network device, and the OFDM symbol includes one or more intervals.

[0239] In some implementations, the first signal carries cell identity information.

[0240] In some implementations, before the sending unit sends the first signal and / or the second signal, the network device also includes: the sending unit 810 is also used to send first information to the terminal device, and the first information is used to indicate the update of the first sequence and / or the second sequence.

[0241] In an optional embodiment, the receiving unit 710 may be a transceiver 930. The terminal device 700 may further include a processor 910 and a memory 920. Fig. 9 shown.

[0242] In an optional embodiment, the sending unit 810 may be a transceiver 930. The network device 800 may further include a processor 910 and a memory 920. Fig. 9 shown.

[0243] Fig. 9 It is a schematic structural diagram of a communication device according to an embodiment of the present application. Fig. 9 The dotted line in the figure indicates that the unit or module is optional. The device 900 can be used to implement the method described in the above method embodiment. The device 900 can be a chip, a terminal device or a network device.

[0244] The device 900 may include one or more processors 910. The processor 910 may support the device 900 to implement the method described in the foregoing method embodiment. The processor 910 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 also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0245] The apparatus 900 may further include one or more memories 920. The memory 920 stores a program, which can be executed by the processor 910, so that the processor 910 executes the method described in the above method embodiment. The memory 920 may be independent of the processor 910 or integrated in the processor 910.

[0246] The apparatus 900 may further include a transceiver 930. The processor 910 may communicate with other devices or chips through the transceiver 930. For example, the processor 910 may transmit and receive data with other devices or chips through the transceiver 930.

[0247] The present application also provides a computer-readable storage medium for storing a program. The computer-readable storage medium can be applied to a terminal or network device provided in the present application, and the program enables a computer to execute the method performed by the terminal or network device in each embodiment of the present application.

[0248] The embodiment of the present application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to the terminal or network device provided in the embodiment of the present application, and the program enables the computer to execute the method performed by the terminal or network device in each embodiment of the present application.

[0249] The embodiment of the present application also provides a computer program. The computer program can be applied to the terminal or network device provided in the embodiment of the present application, and the computer program enables a computer to execute the method executed by the terminal or network device in each embodiment of the present application.

[0250] It should be understood that the terms "system" and "network" in this application can be used interchangeably. In addition, the terms used in this application are only used to explain the specific embodiments of the present application, and are not intended to limit the present application. The terms "first", "second", "third" and "fourth" in the specification and claims of this application and the accompanying drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions.

[0251] In the embodiments of the present application, the "indication" mentioned can be a direct indication, an indirect indication, or an indication of an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association relationship between A and B.

[0252] In the embodiments of the present application, the term "corresponding" may indicate that there is a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship of indication and being indicated, configuration and being configured, etc.

[0253] In the embodiments of the present application, "pre-definition" or "pre-configuration" can be implemented by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in a device (for example, including a terminal device and a network device), and the present application does not limit the specific implementation method. For example, pre-definition can refer to what is defined in the protocol.

[0254] In the embodiments of the present application, the “protocol” may refer to a standard protocol in the communication field, for example, it may include an LTE protocol, an NR protocol, and related protocols used in future communication systems, and the present application does not limit this.

[0255] In the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0256] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0257] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0258] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0259] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part 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, the process or function described in the embodiment of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that can be read by a computer or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0260] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A wireless communication method, characterized in that: include: The terminal device receives one or more of the following sent by the network device: a first signal and a second signal, the second signal being received based on the first signal; the second signal; The first signal and / or the second signal is obtained by superimposing the first sequence and / or the second sequence on the time domain or frequency domain of orthogonal frequency division multiplexing OFDM, and the first signal and / or the second signal is received by the first receiver of the terminal device, and the power consumption of the first receiver is lower than the power consumption of the second receiver of the terminal device.

2. The method according to claim 1, characterized in that The first signal is a low power synchronization signal LP-SS.

3. The method according to claim 1 or 2, characterized in that The second signal is a low power consumption wake-up signal LP-WUS.

4. The method according to any one of claims 1 to 3, characterized in that The timing information of the first signal is determined based on the timing information of the third signal; and / or The time domain resources occupied by the first signal overlap with the time domain resources occupied by the third signal; and / or The first signal and the third signal have a quasi co-site QCL relationship; and / or The third signal includes one or more of the following: a synchronization signal broadcast channel block SSB; an SSB burst set; a primary synchronization signal PSS / secondary synchronization signal SSS in the SSB.

5. The method according to any one of claims 1 to 4, characterized in that The information bits of the second signal are carried in the superimposed OFDM, and the size of the information bits is associated with one or more of the following: Information content carried by the second signal; a coding rate of the second signal; The number of paging occasions PO of the second signal; The number of terminal devices indicated by the PO; The number of monitoring times of the second signal.

6. The method according to claim 5, characterized in that The size of the information bit is also associated with one or more of the following: Network configuration information; The number of cells in the tracking area; The density of terminal devices in the cell; The current arriving traffic volume.

7. The method according to any one of claims 1 to 6, characterized in that There is a first association relationship between the first sequence and the second sequence, and the first association relationship is used to indicate one or more of the following: The first sequence is the same as the second sequence; The first sequence is different from the second sequence; The modulation order of the first sequence is the same as the modulation order of the second sequence; The modulation order of the first sequence is different from the modulation order of the second sequence; The modulation order of the first sequence is greater than or equal to the modulation order of the second sequence.

8. The method according to any one of claims 1 to 7, characterized in that The first sequence and / or the second sequence is determined based on one or more of the following: Preconfigured sequences; Predefined sequences; One or more candidate sequences.

9. The method according to claim 8, characterized in that The candidate sequence is obtained by performing at least one of the following operations on the basic sequence: cyclic shift; extension; truncation.

10. The method according to claim 9, characterized in that The candidate sequence is obtained by inserting zeros before and / or after the base sequence is extended, and the total number of zeros is determined by the formula N0=L-N; Wherein, L is the length of the candidate sequence, and N is the length of the basic sequence.

11. The method according to claim 9 or 10, characterized in that The step size of the cyclic shift includes one or more steps.

12. The method according to any one of claims 9 to 11, characterized in that The basic sequence is a ZC sequence, and the root sequence of the ZC sequence includes one or more.

13. The method according to claim 12, characterized in that The root sequence and / or the step size of the cyclic shift of the ZC sequence is determined based on one or more of the following: a modulation order of the first signal and / or the second signal; The length of the base sequence; Network load information; Channel state information; Inter-cell interference situation; The timing error of the terminal device.

14. The method according to claim 13, characterized in that The step size of the cyclic shift is given by the formula Sure; Among them, N ZC is the length of the ZC sequence, and M is the modulation order of the first signal and / or the second signal.

15. The method according to any one of claims 9 to 11, characterized in that The basic sequence is an M sequence, and the M sequence is generated based on one or more generating polynomials.

16. The method according to claim 15, characterized in that The step size of the cyclic shift of the M sequence satisfies Among them, C V is the step size of the cyclic shift of the M sequence, N M is the length of the M sequence.

17. The method according to any one of claims 1 to 16, characterized in that The length of the first sequence and / or the second sequence is associated with one or more of the following: the number of transmission resource blocks of the first signal and / or the second signal; a modulation order of the first signal and / or the second signal; The length of the base sequence; Subcarrier spacing; Channel state information; Mobility of the terminal device; The power consumption of the terminal device; The detection requirements of the terminal device.

18. The method according to claim 17, characterized in that The base sequence is a ZC sequence, and the length of the first sequence and / or the second sequence satisfies at least one of the following: L ZC =2 k / M,2 k ≤12*X; L ZC =(2*X) / M; Wherein, M is the modulation order of the first signal and / or the second signal, and X is the number of transmission resource blocks of the first signal and / or the second signal.

19. The method according to claim 17, characterized in that There is a second correlation relationship between the length of the first sequence and the modulation order of the first signal, where the second correlation relationship is used to indicate one or more of the following: A modulation order of the first signal corresponds to the length of multiple first sequences; The modulation orders of the plurality of first signals correspond to the length of one first sequence; A modulation order of the first signal corresponds to a length of the first sequence.

20. The method according to any one of claims 1 to 19, characterized in that The power of the first signal and / or the second signal is allocated based on one or more of the following: Activated subcarriers; The symbol position of the OFDM; Peak to average power ratio (PAPR) detection results.

21. The method of claim 20, wherein: The power of the first signal and / or the second signal is evenly distributed on the activated subcarriers.

22. The method of claim 20, wherein: The power of the symbol frame for transmitting the first signal and / or the second signal is calculated by the formula p=α*p′+(1-α)*p total / N on Sure; Among them, α is the smoothing factor, p′ is the power of the previous symbol frame, and p total is the total power of the first signal and / or the second signal, N on is the number of activated subcarriers.

23. The method according to any one of claims 1 to 22, characterized in that The modulation mode of the first signal and / or the second signal is binary amplitude shift keying modulation OOK.

24. The method according to any one of claims 1 to 23, characterized in that The first signal and / or the second signal is encoded in Manchester encoding.

25. The method according to any one of claims 1 to 24, characterized in that The structure of the OFDM symbol for transmitting the second signal and / or the second signal is configured by the network device, and the OFDM symbol includes one or more intervals.

26. The method according to any one of claims 1 to 25, characterized in that The first signal carries cell identity information.

27. The method according to any one of claims 1 to 26, characterized in that Before the terminal device receives the first signal and / or the second signal, the method further includes: The terminal device receives first information sent by the network device, where the first information is used to indicate an update of the first sequence and / or the second sequence.

28. A wireless communication method, characterized in that: include: The network device sends one or more of the following to the terminal device: a first signal and a second signal, the second signal being received based on the first signal; the second signal; The first signal and / or the second signal is obtained by superimposing the first sequence and / or the second sequence on the time domain or frequency domain of orthogonal frequency division multiplexing OFDM, and the first signal and / or the second signal is received by the first receiver of the terminal device, and the power consumption of the first receiver is lower than the power consumption of the second receiver of the terminal device.

29. The method of claim 28, wherein: The first signal is a low power synchronization signal LP-SS.

30. The method according to claim 28 or 29, characterized in that The second signal is a low power consumption wake-up signal LP-WUS.

31. The method according to any one of claims 28 to 30, characterized in that The timing information of the first signal is determined based on the timing information of the third signal; and / or The time domain resources occupied by the first signal overlap with the time domain resources occupied by the third signal; and / or The first signal and the third signal have a quasi co-site QCL relationship; and / or The third signal includes one or more of the following: a synchronization signal broadcast channel block SSB; an SSB burst set; a primary synchronization signal PSS / secondary synchronization signal SSS in the SSB.

32. The method according to any one of claims 28 to 31, characterized in that The information bits of the second signal are carried in the superimposed OFDM, and the size of the information bits is associated with one or more of the following: Information content carried by the second signal; a coding rate of the second signal; The number of paging occasions PO of the second signal; The number of terminal devices indicated by the PO; The number of monitoring times of the second signal.

33. The method of claim 32, wherein: The size of the information bit is also associated with one or more of the following: Network configuration information; The number of cells in the tracking area; The density of terminal devices in the cell; The current arriving traffic volume.

34. The method according to any one of claims 28 to 33, characterized in that There is a first association relationship between the first sequence and the second sequence, and the first association relationship is used to indicate one or more of the following: The first sequence is the same as the second sequence; The first sequence is different from the second sequence; The modulation order of the first sequence is the same as the modulation order of the second sequence; The modulation order of the first sequence is different from the modulation order of the second sequence; The modulation order of the first sequence is greater than or equal to the modulation order of the second sequence.

35. The method according to any one of claims 28 to 34, characterized in that The first sequence and / or the second sequence is determined based on one or more of the following: Preconfigured sequences; Predefined sequences; One or more candidate sequences.

36. The method of claim 35, wherein: The candidate sequence is obtained by performing at least one of the following operations on the basic sequence: cyclic shift; extension; truncation.

37. The method of claim 36, wherein: The candidate sequence is obtained by inserting zeros before and / or after the base sequence is extended, and the total number of zeros is determined by the formula N0=L-N; Wherein, L is the length of the candidate sequence, and N is the length of the basic sequence.

38. The method according to claim 36 or 37, characterized in that The step size of the cyclic shift includes one or more steps.

39. The method according to any one of claims 36 to 38, characterized in that The basic sequence is a ZC sequence, and the root sequence of the ZC sequence includes one or more.

40. The method of claim 39, wherein: The root sequence and / or the step size of the cyclic shift of the ZC sequence is determined based on one or more of the following: a modulation order of the first signal and / or the second signal; The length of the base sequence; Network load information; Channel state information; Inter-cell interference situation; The timing error of the terminal device.

41. The method of claim 40, wherein: The step size of the cyclic shift is given by the formula Sure; Among them, N ZC is the length of the ZC sequence, and M is the modulation order of the first signal and / or the second signal.

42. The method according to any one of claims 36 to 38, wherein: The basic sequence is an M sequence, and the M sequence is generated based on one or more generating polynomials.

43. The method of claim 42, wherein: The step size of the cyclic shift of the M sequence satisfies Among them, C V is the step size of the cyclic shift of the M sequence, N M is the length of the M sequence.

44. The method according to any one of claims 28 to 43, characterized in that The length of the first sequence and / or the second sequence is associated with one or more of the following: the number of transmission resource blocks of the first signal and / or the second signal; a modulation order of the first signal and / or the second signal; The length of the base sequence; Subcarrier spacing; Channel state information; Mobility of the terminal device; The power consumption of the terminal device; The detection requirements of the terminal device.

45. The method of claim 44, wherein: The base sequence is a ZC sequence, and the length of the first sequence and / or the second sequence satisfies at least one of the following: L ZC =2 k / M,2 k ≤12*X; L ZC =(2*X) / M; Wherein, M is the modulation order of the first signal and / or the second signal, and X is the number of transmission resource blocks of the first signal and / or the second signal.

46. ​​The method of claim 44, wherein: There is a second correlation relationship between the length of the first sequence and the modulation order of the first signal, where the second correlation relationship is used to indicate one or more of the following: A modulation order of the first signal corresponds to the length of multiple first sequences; The modulation orders of the plurality of first signals correspond to the length of one first sequence; A modulation order of the first signal corresponds to a length of the first sequence.

47. The method according to any one of claims 28 to 46, characterized in that The power of the first signal and / or the second signal is allocated based on one or more of the following: Activated subcarriers; The symbol position of the OFDM; Peak to average power ratio (PAPR) detection results.

48. The method of claim 47, wherein: The power of the first signal and / or the second signal is evenly distributed on the activated subcarriers.

49. The method of claim 47, wherein: The power of the symbol frame for transmitting the first signal and / or the second signal is calculated by the formula p=α*p′+(1-α)*p total / N on Sure; Among them, α is the smoothing factor, p′ is the power of the previous symbol frame, and p total is the total power of the first signal and / or the second signal, N on is the number of activated subcarriers.

50. The method according to any one of claims 28 to 49, characterized in that The modulation mode of the first signal and / or the second signal is binary amplitude shift keying modulation OOK.

51. The method according to any one of claims 28 to 50, characterized in that The first signal and / or the second signal is encoded in Manchester encoding.

52. The method according to any one of claims 28 to 51, characterized in that The structure of the OFDM symbol for transmitting the second signal and / or the second signal is configured by the network device, and the OFDM symbol includes one or more intervals.

53. The method according to any one of claims 28 to 52, characterized in that The first signal carries cell identity information.

54. The method according to any one of claims 28 to 53, characterized in that Before the network device sends the first signal and / or the second signal, the method further includes: The network device sends first information to the terminal device, where the first information is used to indicate an update of the first sequence and / or the second sequence.

55. A terminal device, characterized in that: The terminal device comprises: A receiving unit, configured to receive one or more of the following sent by a network device: a first signal and a second signal, the second signal being received based on the first signal; the second signal; The first signal and / or the second signal is obtained by superimposing the first sequence and / or the second sequence on the time domain or frequency domain of orthogonal frequency division multiplexing OFDM, and the first signal and / or the second signal is received by the first receiver of the terminal device, and the power consumption of the first receiver is lower than the power consumption of the second receiver of the terminal device.

56. The terminal device according to claim 55, characterized in that: The first signal is a low power synchronization signal LP-SS.

57. The terminal device according to claim 55 or 56, characterized in that: The second signal is a low power consumption wake-up signal LP-WUS.

58. The terminal device according to any one of claims 55 to 57, characterized in that: The timing information of the first signal is determined based on the timing information of the third signal; and / or The time domain resources occupied by the first signal overlap with the time domain resources occupied by the third signal; and / or The first signal and the third signal have a quasi co-site QCL relationship; and / or The third signal includes one or more of the following: a synchronization signal broadcast channel block SSB; an SSB burst set; a primary synchronization signal PSS / secondary synchronization signal SSS in the SSB.

59. The terminal device according to any one of claims 55 to 58, characterized in that: The information bits of the second signal are carried in the superimposed OFDM, and the size of the information bits is associated with one or more of the following: Information content carried by the second signal; a coding rate of the second signal; The number of paging occasions PO of the second signal; The number of terminal devices indicated by the PO; The number of monitoring times of the second signal.

60. The terminal device according to claim 59, characterized in that: The size of the information bit is also associated with one or more of the following: Network configuration information; The number of cells in the tracking area; The density of terminal devices in the cell; The current arriving traffic volume.

61. The terminal device according to any one of claims 55 to 60, characterized in that: There is a first association relationship between the first sequence and the second sequence, and the first association relationship is used to indicate one or more of the following: The first sequence is the same as the second sequence; The first sequence is different from the second sequence; The modulation order of the first sequence is the same as the modulation order of the second sequence; The modulation order of the first sequence is different from the modulation order of the second sequence; The modulation order of the first sequence is greater than or equal to the modulation order of the second sequence.

62. The terminal device according to any one of claims 55 to 61, characterized in that: The first sequence and / or the second sequence is determined based on one or more of the following: Preconfigured sequences; Predefined sequences; One or more candidate sequences.

63. The terminal device according to claim 62, characterized in that: The candidate sequence is obtained by performing at least one of the following operations on the basic sequence: cyclic shift; extension; truncation.

64. The terminal device according to claim 63, characterized in that: The candidate sequence is obtained by inserting zeros before and / or after the base sequence is extended, and the total number of zeros is determined by the formula N0=L-N; Wherein, L is the length of the candidate sequence, and N is the length of the basic sequence.

65. The terminal device according to claim 63 or 64, characterized in that: The step size of the cyclic shift includes one or more steps.

66. The terminal device according to any one of claims 63 to 65, characterized in that: The basic sequence is a ZC sequence, and the root sequence of the ZC sequence includes one or more.

67. The terminal device according to claim 66, characterized in that: The root sequence and / or the step size of the cyclic shift of the ZC sequence is determined based on one or more of the following: a modulation order of the first signal and / or the second signal; The length of the base sequence; Network load information; Channel state information; Inter-cell interference situation; The timing error of the terminal device.

68. The terminal device according to claim 67, characterized in that: The step size of the cyclic shift is given by the formula Sure; Among them, N ZC is the length of the ZC sequence, and M is the modulation order of the first signal and / or the second signal.

69. The terminal device according to any one of claims 63 to 65, characterized in that: The basic sequence is an M sequence, and the M sequence is generated based on one or more generating polynomials.

70. The terminal device according to claim 68, characterized in that: The step size of the cyclic shift of the M sequence satisfies Among them, C V is the step size of the cyclic shift of the M sequence, N M is the length of the M sequence.

71. The terminal device according to any one of claims 55 to 70, characterized in that: The length of the first sequence and / or the second sequence is associated with one or more of the following: the number of transmission resource blocks of the first signal and / or the second signal; a modulation order of the first signal and / or the second signal; The length of the base sequence; Subcarrier spacing; Channel state information; Mobility of the terminal device; The power consumption of the terminal device; The detection requirements of the terminal device.

72. The terminal device according to claim 71, characterized in that: The base sequence is a ZC sequence, and the length of the first sequence and / or the second sequence satisfies at least one of the following: L ZC =2 k / M,2 k ≤12*X; L ZC =(2*X) / M; Wherein, M is the modulation order of the first signal and / or the second signal, and X is the number of transmission resource blocks of the first signal and / or the second signal.

73. The terminal device according to claim 71, characterized in that: There is a second correlation relationship between the length of the first sequence and the modulation order of the first signal, where the second correlation relationship is used to indicate one or more of the following: A modulation order of the first signal corresponds to the length of multiple first sequences; The modulation orders of the plurality of first signals correspond to the length of one first sequence; A modulation order of the first signal corresponds to a length of the first sequence.

74. The terminal device according to any one of claims 55 to 73, characterized in that: The power of the first signal and / or the second signal is allocated based on one or more of the following: Activated subcarriers; The symbol position of the OFDM; Peak to average power ratio (PAPR) detection results.

75. The terminal device according to claim 74, characterized in that: The power of the first signal and / or the second signal is evenly distributed on the activated subcarriers.

76. The terminal device according to claim 74, characterized in that: The power of the symbol frame for transmitting the first signal and / or the second signal is calculated by the formula p=α*p′+(1-α)*p total / N on Sure; Among them, α is the smoothing factor, p′ is the power of the previous symbol frame, and p total is the total power of the first signal and / or the second signal, N on is the number of activated subcarriers.

77. The terminal device according to any one of claims 55 to 76, characterized in that: The modulation mode of the first signal and / or the second signal is binary amplitude shift keying modulation OOK.

78. The terminal device according to any one of claims 55 to 77, characterized in that: The first signal and / or the second signal is encoded in Manchester encoding.

79. The terminal device according to any one of claims 55 to 78, characterized in that: The structure of the OFDM symbol for transmitting the second signal and / or the second signal is configured by the network device, and the OFDM symbol includes one or more intervals.

80. The terminal device according to any one of claims 55 to 79, characterized in that: The first signal carries cell identity information.

81. The terminal device according to any one of claims 55 to 80, characterized in that: Before the receiving unit receives the first signal and / or the second signal, the terminal device further includes: The receiving unit is further configured to receive first information sent by the network device, where the first information is used to indicate an update of the first sequence and / or the second sequence.

82. A network device, characterized in that: The network equipment includes: A sending unit is used to send one or more of the following to the terminal device: a first signal and a second signal, the second signal being received based on the first signal; the second signal; The first signal and / or the second signal is obtained by superimposing the first sequence and / or the second sequence on the time domain or frequency domain of orthogonal frequency division multiplexing OFDM, and the first signal and / or the second signal is received by the first receiver of the terminal device, and the power consumption of the first receiver is lower than the power consumption of the second receiver of the terminal device.

83. The network device according to claim 82, characterized in that The first signal is a low power synchronization signal LP-SS.

84. The network device according to claim 82 or 83, characterized in that: The second signal is a low power consumption wake-up signal LP-WUS.

85. The network device according to any one of claims 82 to 84, characterized in that: The timing information of the first signal is determined based on the timing information of the third signal; and / or The time domain resources occupied by the first signal overlap with the time domain resources occupied by the third signal; and / or The first signal and the third signal have a quasi co-site QCL relationship; and / or The third signal includes one or more of the following: a synchronization signal broadcast channel block SSB; an SSB burst set; a primary synchronization signal PSS / secondary synchronization signal SSS in the SSB.

86. The network device according to any one of claims 82 to 85, characterized in that: The information bits of the second signal are carried in the superimposed OFDM, and the size of the information bits is associated with one or more of the following: Information content carried by the second signal; a coding rate of the second signal; The number of paging occasions PO of the second signal; The number of terminal devices indicated by the PO; The number of monitoring times of the second signal.

87. The network device according to claim 86, characterized in that The size of the information bit is also associated with one or more of the following: Network configuration information; The number of cells in the tracking area; The density of terminal devices in the cell; The current arriving traffic volume.

88. The network device according to any one of claims 82 to 87, characterized in that: There is a first association relationship between the first sequence and the second sequence, and the first association relationship is used to indicate one or more of the following: The first sequence is the same as the second sequence; The first sequence is different from the second sequence; The modulation order of the first sequence is the same as the modulation order of the second sequence; The modulation order of the first sequence is different from the modulation order of the second sequence; The modulation order of the first sequence is greater than or equal to the modulation order of the second sequence.

89. The network device according to any one of claims 82 to 88, characterized in that: The first sequence and / or the second sequence is determined based on one or more of the following: Preconfigured sequences; Predefined sequences; One or more candidate sequences.

90. The network device according to claim 89, characterized in that The candidate sequence is obtained by performing at least one of the following operations on the basic sequence: cyclic shift; extension; truncation.

91. The network device according to claim 90, characterized in that The candidate sequence is obtained by inserting zeros before and / or after the base sequence is extended, and the total number of zeros is determined by the formula N0=L-N; Wherein, L is the length of the candidate sequence, and N is the length of the basic sequence.

92. The network device according to claim 90 or 91, characterized in that: The step size of the cyclic shift includes one or more steps.

93. The network device according to any one of claims 90 to 92, characterized in that: The basic sequence is a ZC sequence, and the root sequence of the ZC sequence includes one or more.

94. The network device according to claim 93, characterized in that The root sequence and / or the step size of the cyclic shift of the ZC sequence is determined based on one or more of the following: a modulation order of the first signal and / or the second signal; The length of the base sequence; Network load information; Channel state information; Inter-cell interference situation; The timing error of the terminal device.

95. The network device according to claim 94, characterized in that The step size of the cyclic shift is given by the formula Sure; Among them, N ZC is the length of the ZC sequence, and M is the modulation order of the first signal and / or the second signal.

96. The network device according to any one of claims 90 to 92, characterized in that: The basic sequence is an M sequence, and the M sequence is generated based on one or more generating polynomials.

97. The network device according to claim 96, characterized in that The step size of the cyclic shift of the M sequence satisfies Among them, C V is the step size of the cyclic shift of the M sequence, N M is the length of the M sequence.

98. The network device according to any one of claims 82 to 97, characterized in that: The length of the first sequence and / or the second sequence is associated with one or more of the following: the number of transmission resource blocks of the first signal and / or the second signal; a modulation order of the first signal and / or the second signal; The length of the base sequence; Subcarrier spacing; Channel state information; Mobility of the terminal device; The power consumption of the terminal device; The detection requirements of the terminal device.

99. The network device according to claim 98, characterized in that The base sequence is a ZC sequence, and the length of the first sequence and / or the second sequence satisfies at least one of the following: L ZC =2 k / M,2 k ≤12*X; L ZC =(2*X) / M; Wherein, M is the modulation order of the first signal and / or the second signal, and X is the number of transmission resource blocks of the first signal and / or the second signal.

100. The network device according to claim 98, characterized in that: There is a second correlation relationship between the length of the first sequence and the modulation order of the first signal, where the second correlation relationship is used to indicate one or more of the following: A modulation order of the first signal corresponds to the length of multiple first sequences; The modulation orders of the plurality of first signals correspond to the length of one first sequence; A modulation order of the first signal corresponds to a length of the first sequence.

101. The network device according to any one of claims 82 to 100, characterized in that: The power of the first signal and / or the second signal is allocated based on one or more of the following: Activated subcarriers; The symbol position of the OFDM; Peak to average power ratio (PAPR) detection results.

102. The network device according to claim 101, characterized in that The power of the first signal and / or the second signal is evenly distributed on the activated subcarriers.

103. The network device according to claim 101, characterized in that The power of the symbol frame for transmitting the first signal and / or the second signal is calculated by the formula p=α*p′+(1-α)*p total / N on Sure; Among them, α is the smoothing factor, p′ is the power of the previous symbol frame, and p total is the total power of the first signal and / or the second signal, N on is the number of activated subcarriers.

104. The network device according to any one of claims 82 to 103, characterized in that: The modulation mode of the first signal and / or the second signal is binary amplitude shift keying modulation OOK.

105. The network device according to any one of claims 82 to 104, characterized in that: The first signal and / or the second signal is encoded in Manchester encoding.

106. The network device according to any one of claims 82 to 105, characterized in that: The structure of the OFDM symbol for transmitting the second signal and / or the second signal is configured by the network device, and the OFDM symbol includes one or more intervals.

107. The network device according to any one of claims 82 to 106, characterized in that: The first signal carries cell identity information.

108. The network device according to any one of claims 82 to 107, characterized in that: Before the sending unit sends the first signal and / or the second signal, the network device further includes: The sending unit is further used to send first information to the terminal device, where the first information is used to indicate an update of the first sequence and / or the second sequence.

109. A terminal device, characterized in that: It comprises a transceiver, a memory and a processor, wherein the memory is used to store programs, and the processor is used to call the programs in the memory and control the transceiver to receive or send signals so that the terminal executes the method as described in any one of claims 1 to 27.

110. A network device, characterized in that: It comprises a transceiver, a memory and a processor, wherein the memory is used to store programs, and the processor is used to call the programs in the memory and control the transceiver to receive or send signals so that the network device executes the method as described in any one of claims 28-54.

111. A device, characterized in that: It comprises a processor, which is used to call a program from a memory so that the device executes the method as described in any one of claims 1-54.

112. A chip, characterized in that: It comprises a processor, which is used to call a program from a memory so that a device equipped with the chip executes a method as claimed in any one of claims 1 to 54.

113. A computer-readable storage medium, characterized in that A program is stored thereon, the program causing a computer to execute the method according to any one of claims 1 to 54.

114. A computer program product, characterized in that A program is included, which causes a computer to execute the method as claimed in any one of claims 1 to 54.

115. A computer program, characterized in that The computer program causes a computer to execute the method according to any one of claims 1 to 54.

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