WO2024032772A1 - 唤醒信号处理方法、装置以及设备 - Google Patents

唤醒信号处理方法、装置以及设备 Download PDF

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Publication number
WO2024032772A1
WO2024032772A1 PCT/CN2023/112577 CN2023112577W WO2024032772A1 WO 2024032772 A1 WO2024032772 A1 WO 2024032772A1 CN 2023112577 W CN2023112577 W CN 2023112577W WO 2024032772 A1 WO2024032772 A1 WO 2024032772A1
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Prior art keywords
signal
wake
low
rate
symbol
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PCT/CN2023/112577
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English (en)
French (fr)
Inventor
曹永照
雷珍珠
周化雨
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展讯半导体(南京)有限公司
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Publication of WO2024032772A1 publication Critical patent/WO2024032772A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the embodiments of the present application relate to the field of communication technology, and in particular, to a wake-up signal processing method, apparatus and equipment.
  • the user equipment In wireless communication technology, such as in the fifth generation mobile communication technology (5th Generation Mobile Communication Technology, 5G), the user equipment (User Equipment, UE) is in the idle state (Radio Resource Control IDLE, RRC-IDLE) or inactive state (RRC-INACTIVE), it needs to wake up periodically and listen for paging messages within the paging occasion (PO). This periodic wake-up method consumes a large amount of power for the UE, resulting in low energy efficiency of the UE.
  • 5G Fifth Generation Mobile Communication Technology
  • UE User Equipment
  • RRC-IDLE Radio Resource Control IDLE
  • RRC-INACTIVE Radio Resource Control IDLE
  • This periodic wake-up method consumes a large amount of power for the UE, resulting in low energy efficiency of the UE.
  • the 3rd Generation Partnership Project (3GPP) introduced in the R17 standard (Release 17) for the 5G New Radio system (New Radio, NR) Paging enhancement function, namely Paging Early Indication (PEI).
  • the PEI is used to notify the UE whether it needs to wake up in the PO and listen for paging messages before the paging occasion (PO). In this way, the power loss of the UE can be reduced to a certain extent.
  • the UE's reception of PEI is also periodic, which results in a certain delay in the UE's wake-up, which cannot meet the actual needs of delay-sensitive services. That is, the method of waking up the UE in the related art cannot meet the delay requirement while reducing energy consumption.
  • This application provides a wake-up signal processing method, device and equipment, which can reduce the energy consumption of terminal equipment while meeting delay requirements.
  • embodiments of the present application provide a wake-up signal processing method, including:
  • the superimposed signal is obtained by modulating the low-rate wake-up signal to an OFDM signal on at least one symbol; the time-domain waveform width of the low-rate wake-up signal is consistent with the at least one symbol Same; and/or,
  • the superimposed signal is obtained by superimposing the low-rate wake-up signal and the time-domain OFDM signal of pre-configured frequency domain resources.
  • the at least one symbol is located in at least one time slot.
  • the at least one symbol is a symbol including a synchronous broadcast signal SSB; and the low-rate wake-up signal is carried in at least one symbol including the synchronous broadcast signal SSB.
  • the at least one symbol is a symbol including system information SIB; the low-rate wake-up signal is carried in at least one symbol including the system information SIB.
  • whether the low-rate wake-up signal exists is indicated by system information SIB, downlink control information DCI, RRC or MAC-CE.
  • whether the low-rate wake-up signal exists is indicated by DCI format 2-1 after being scrambled by a new wireless network temporary identifier RNTI.
  • whether the low-rate wake-up signal exists is indicated by at least one newly added bit of the DCI format 2-1.
  • the DCI is also used to indicate a target position corresponding to the low-rate wake-up signal; the target position is at least one symbol where the low-rate wake-up signal is located in the OFDM signal.
  • the first wake-up signal includes a bit indication
  • the first wake-up signal includes a bit indication and an identifier; the identifier includes at least one of a terminal device identifier and a group identifier to which the terminal device belongs.
  • the low-rate modulation method includes one of on-off keying OOK modulation, pulse modulation, and specific function modulation.
  • the first wake-up signal is a wake-up signal obtained by simple encoding.
  • the simple encoding includes any of the following:
  • Reverse non-return to zero coding Manchester coding, unipolar return to zero coding, differential biphase coding, Miller coding, modified Miller coding, pulse-intermittent coding, pulse position coding, biphase interval coding, pulse width coding.
  • embodiments of the present application provide another wake-up signal processing method, including:
  • the superimposed signal is obtained by superposing a low-rate wake-up signal and an OFDM signal;
  • the low-rate wake-up signal is obtained by modulating the first wake-up signal using a low-rate modulation method;
  • the superimposed signal is demodulated to obtain the first wake-up signal.
  • the superimposed signal is obtained by modulating the low-rate wake-up signal to an OFDM signal on at least one symbol; the time-domain waveform width of the low-rate wake-up signal is consistent with the at least one symbol Same; and/or,
  • the superimposed signal is obtained by superimposing the low-rate wake-up signal and the time-domain OFDM signal of pre-configured frequency domain resources.
  • the at least one symbol is located in at least one time slot.
  • the at least one symbol is a symbol including a synchronous broadcast signal SSB; and the low-rate wake-up signal is carried in at least one symbol including the synchronous broadcast signal SSB.
  • the at least one symbol is a symbol including system information SIB; the low-rate wake-up signal is carried in at least one symbol including the system information SIB.
  • whether the low-rate wake-up signal exists is indicated by system information SIB, downlink control information DCI, RRC or MAC-CE.
  • whether the low-rate wake-up signal exists is indicated by DCI format 2-1 after being scrambled by a new wireless network temporary identifier RNTI.
  • whether the low-rate wake-up signal exists is indicated by at least one newly added bit of the DCI format 2-1.
  • the DCI is also used to indicate a target position corresponding to the low-rate wake-up signal; the target position is at least one symbol where the low-rate wake-up signal is located in the OFDM signal.
  • the first wake-up signal includes a bit indication
  • the first wake-up signal includes a bit indication and an identifier; the identifier includes at least one of a terminal device identifier and a group identifier to which the terminal device belongs.
  • the low-rate modulation method includes one of on-off keying OOK modulation, pulse modulation, and specific function modulation.
  • the first wake-up signal is a wake-up signal obtained by simple encoding.
  • the simple encoding includes any of the following:
  • Reverse non-return to zero coding Manchester coding, unipolar return to zero coding, differential biphase coding, Miller coding, modified Miller coding, pulse-intermittent coding, pulse position coding, biphase interval coding, pulse width coding.
  • a wake-up signal processing device including:
  • a modulation module used to modulate the first wake-up signal using a low-rate modulation method to obtain a low-rate wake-up signal
  • a superposition module used to superimpose the low-rate wake-up signal and the OFDM signal to obtain a superimposed signal
  • a sending module configured to send the superimposed signal.
  • the superimposed signal is obtained by modulating the low-rate wake-up signal to an OFDM signal on at least one symbol; the time-domain waveform width of the low-rate wake-up signal is consistent with the at least one symbol Same; and/or,
  • the superimposed signal is obtained by superimposing the low-rate wake-up signal and the time-domain OFDM signal of pre-configured frequency domain resources.
  • the at least one symbol is located in at least one time slot.
  • the at least one symbol is a symbol including a synchronous broadcast signal SSB; and the low-rate wake-up signal is carried in at least one symbol including the synchronous broadcast signal SSB.
  • the at least one symbol is a symbol including system information SIB; the low-rate wake-up signal is carried in at least one symbol including the system information SIB.
  • whether the low-rate wake-up signal exists is indicated by system information SIB, downlink control information DCI, RRC or MAC-CE.
  • whether the low-rate wake-up signal exists is indicated by DCI format 2-1 after being scrambled by a new wireless network temporary identifier RNTI.
  • whether the low-rate wake-up signal exists is indicated by at least one newly added bit of the DCI format 2-1.
  • the DCI is also used to indicate a target position corresponding to the low-rate wake-up signal; the target position is at least one symbol where the low-rate wake-up signal is located in the OFDM signal.
  • the first wake-up signal includes a bit indication
  • the first wake-up signal includes a bit indication and an identifier; the identifier includes at least one of a terminal device identifier and a group identifier to which the terminal device belongs.
  • the low-rate modulation method includes one of on-off keying OOK modulation, pulse modulation, and specific function modulation.
  • the first wake-up signal is a wake-up signal obtained by simple encoding.
  • the simple encoding includes any of the following:
  • Reverse non-return to zero coding Manchester coding, unipolar return to zero coding, differential biphase coding, Miller coding, modified Miller coding, pulse-intermittent coding, pulse position coding, biphase interval coding, pulse width coding.
  • a wake-up signal processing device including:
  • a receiving module configured to receive a superimposed signal; the superimposed signal is obtained by superposing a low-rate wake-up signal and an OFDM signal; the low-rate wake-up signal is obtained by modulating the first wake-up signal using a low-rate modulation method;
  • a demodulation module configured to demodulate the superimposed signal to obtain the first wake-up signal.
  • embodiments of the present application provide a wake-up signal processing device, including: a processor and a memory;
  • the memory stores computer execution instructions
  • the processor executes computer execution instructions stored in the memory to implement the method described in either the first aspect or the second aspect.
  • embodiments of the present application provide a computer-readable storage medium.
  • the computer-readable storage medium stores computer-executable instructions. When the computer-executable instructions are executed, they are used to implement the first aspect or the second aspect. any of the methods described.
  • embodiments of the present application provide a computer program product, including a computer program that implements the method described in any one of the first aspect or the second aspect when the computer program is executed.
  • embodiments of the present application provide a chip.
  • a computer program is stored on the chip.
  • the computer program is executed by the chip, the method described in any one of the first aspect or the second aspect is implemented.
  • embodiments of the present application provide a chip module.
  • a computer program is stored on the chip module.
  • the computer program is executed by the chip, the implementation of any one of the first aspect or the second aspect is implemented. method described.
  • the network equipment modulates the first wake-up signal using a low-rate modulation method to obtain a low-rate wake-up signal; superimposes the low-rate wake-up signal and the OFDM signal to obtain a superimposed signal ;Send superimposed signals to the terminal device.
  • the terminal device can use a demodulation method with lower power consumption to demodulate the superimposed signal, reducing the power consumption of the terminal device; at the same time, on the basis of low power consumption , the terminal device can detect the wake-up signal more frequently, and can receive the wake-up signal in real time, thereby realizing the rapid wake-up of the terminal device, meeting the needs of delay-sensitive services.
  • Figure 1 is a schematic diagram of an application scenario provided by an embodiment of this application.
  • FIG. 2 is a schematic diagram of the network architecture provided by the embodiment of this application.
  • Figure 3 is a schematic diagram of early 5G network paging
  • Figure 4 is a schematic diagram of a PEI based on DCI
  • Figure 5 is a schematic diagram of a paging group grouping
  • Figure 6 is a schematic flowchart of a wake-up signal processing method provided by an embodiment of the present application.
  • Figure 7 is a schematic diagram of reverse non-return-to-zero encoding provided by an embodiment of the present application.
  • Figure 8 is a schematic diagram of Manchester encoding provided by an embodiment of the present application.
  • Figure 9 is a schematic diagram of a unipolar return-to-zero encoding provided by an embodiment of the present application.
  • Figure 10 is a schematic diagram of a differential two-phase encoding provided by an embodiment of the present application.
  • Figure 11 is a schematic diagram of Miller coding provided by an embodiment of the present application.
  • Figure 12 is a schematic diagram of a pulse-intermittent encoding provided by an embodiment of the present application.
  • Figure 13 is a schematic diagram of a pulse position encoding provided by an embodiment of the present application.
  • Figure 14 is a schematic diagram of a bi-phase interval code encoding provided by an embodiment of the present application.
  • Figure 15 is a schematic diagram of a pulse width encoding provided by an embodiment of the present application.
  • Figure 16 is a schematic diagram of the signal waveform of OOK modulation
  • Figure 17 is a schematic diagram of the signal waveform of amplitude shift keying ASK modulation
  • Figure 18 is a schematic flow chart of yet another wake-up signal processing method provided by an embodiment of the present application.
  • FIG. 19 is a schematic flowchart of yet another wake-up signal processing method provided by an embodiment of the present application.
  • Figure 20 is a schematic structural diagram of a wake-up signal processing device provided by an embodiment of the present application.
  • Figure 21 is a schematic structural diagram of another wake-up signal processing device provided by an embodiment of the present application.
  • Figure 22 is a schematic structural diagram of a wake-up signal processing device provided by an embodiment of the present application.
  • Figure 1 is a schematic diagram of an application scenario provided by an embodiment of the present application. Please refer to Figure 1, which includes a network device 101 and a terminal device 102, both of which communicate through a wireless network.
  • the network device 101 can be any device with wireless transceiver functions.
  • the network equipment includes but is not limited to: various base stations (macro stations, micro stations, pole stations or repeaters (RP), etc.), evolved Node B (evolved Node B, eNB), wireless network controllers ( radio network controller (RNC), Node B (Node B, NB), base station controller (BSC), base transceiver station (BTS), home base station (for example, home evolved NodeB, or home Node B, HNB), baseband unit (baseband unit, BBU) , access point (AP), wireless relay node, wireless backhaul node, transmission point (TP) or transmission and reception point (transmission and reception point) in a wireless fidelity (WiFi) system , TRP), etc., can also be 5G, such as, gNB in the NR system, or, transmission point (TRP or TP), one or a group (including multiple antenna panels) antenna panels of the base station in the 5G system, or, It can also
  • gNB may include centralized units (CUs) and DUs.
  • the gNB may also include an active antenna unit (AAU).
  • CU implements some functions of gNB
  • DU implements some functions of gNB.
  • CU is responsible for processing non-real-time protocols and services, implementing radio resource control (RRC), and packet data convergence protocol (PDCP) layer functions.
  • RRC radio resource control
  • PDCP packet data convergence protocol
  • DU is responsible for processing physical layer protocols and real-time services, and implementing the functions of the wireless link control (radio link control, RLC) layer, medium access control (medium access control, MAC) layer and physical (physical, PHY) layer.
  • RLC radio link control
  • MAC medium access control
  • PHY physical layer
  • the network device may be a device including one or more of a CU node, a DU node, and an AAU node.
  • the CU can be divided into network devices in the access network (radio access network, RAN), or the CU can be divided into network devices in the core network (core network, CN). The embodiment of this application does not limit the specific type or name of the network device 101.
  • the terminal equipment 102 may also be called user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device, etc.
  • the terminal device 101 may specifically be a device that provides voice/data connectivity to users, for example, a handheld device, a vehicle-mounted device, etc. with a wireless connection function.
  • mobile phone mobile phone
  • tablet computer tablet computer
  • computer with wireless transceiver function such as notebook computer, handheld computer, etc.
  • mobile Internet device mobile internet device, MID
  • virtual reality virtual reality, VR
  • AR augmented reality
  • wireless terminals in industrial control wireless terminals in self-driving, wireless terminals in remote medical
  • smart grids Wireless terminals in smart grid, wireless terminals in transportation safety, wireless terminals in smart city, wireless terminals in smart home, cellular phones, cordless phones, session initiation protocols session initiation protocol (SIP) telephone, wireless local loop (WLL) station, personal digital assistant (PDA), handheld device with wireless communication capabilities, computing device or device connected to a wireless modem
  • Other processing equipment vehicle-mounted equipment, wearable devices, terminal equipment in the 5G network or terminal equipment in the future evolved public land mobile communication network (public land mobile network, PLMN), etc.
  • PLMN public land mobile network
  • wearable devices can also be called wearable smart devices. It is a general term for applying wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes, etc.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not just hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly defined wearable smart devices include full-featured, large-sized devices that can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, and those that only focus on a certain type of application function and need to cooperate with other devices such as smartphones. Use, such as various types of smart bracelets, smart jewelry, etc. for physical sign monitoring.
  • the terminal device 102 may also be a terminal device in an Internet of things (IoT) system.
  • IoT Internet of things
  • Its main technical feature is to connect objects to the network through communication technology, thereby realizing an intelligent network of human-computer interconnection and object interconnection.
  • IoT technology can achieve massive connections, deep coverage, and terminal power saving through narrow band NB technology, for example.
  • the terminal device 102 may also include sensors such as smart printers, train detectors, and gas stations. Its main functions include collecting data (some terminal devices), receiving control information and downlink data from network devices, and sending electromagnetic waves to transmit uplink data to network devices. data.
  • the terminal device 102 may also be a chip or a chip module, and the embodiment of the present application does not limit the specific type or name of the terminal device 102.
  • FIG. 2 is a network architecture diagram of an embodiment of the present application.
  • the 5G network architecture mainly includes 5G access network (NG-RAN) and 5G core network (5GC).
  • the 5G wireless access network mainly includes two types of nodes (base stations): gNB and ng-eNB.
  • the gNB node may be a node that provides NR user plane and control plane protocol terminals to the UE, and is connected to the 5GC through the NG interface.
  • the ng-eNB node provides the E-UTRA user plane and control plane protocol terminal nodes to the UE, and is connected to the 5GC through the NG interface.
  • gNB is used for independent networking of 5G
  • ng-eNB is used for backward compatibility with 4G networks.
  • the Xn interface is the network interface between nodes in NG-RAN.
  • the 5G network also includes core units, including Access and Mobility Management Function (AMF) and User Plane Function (UPF). Among them, AMF is responsible for user access and mobility management, and UPF is responsible for user plane processing.
  • AMF Access and Mobility Management Function
  • UPF User Plane Function
  • 5G systems are designed and developed for mobile phones and vertical use cases. In addition to latency, reliability and availability In addition, UE energy efficiency is also crucial to 5G.
  • 5G devices may need to be charged once a week or daily, depending on individual usage. Generally speaking, 5G devices consume tens of milliwatts when RRC is idle or inactive, and hundreds of milliwatts when RRC is connected. Designing to extend battery life is necessary to increase energy efficiency and improve user experience. For UEs without continuous energy sources, such as those using small rechargeable batteries and single coin cells, energy efficiency is even more critical.
  • sensors and actuators are widely used for monitoring, measuring, charging, etc.
  • batteries are non-rechargeable and are expected to last at least a few years, as described in the TR 38.875 standard.
  • wearable devices use typical battery capacity, which can be challenging to maintain for up to 1-2 weeks as needed, and can include smart watches, rings, electronic health-related devices, and medical monitoring devices.
  • the terminal device 102 When the terminal device 102 is in the RRC idle state or the RRC inactive state, the terminal device still needs to wake up and monitor paging messages within the paging opportunity PO. However, within the paging opportunity PO, not all terminal devices are paged. For terminal devices that are not paged, they are frequently awakened and monitor paging messages, resulting in unreasonable consumption of power of the terminal devices, resulting in The battery of the terminal device wears down rapidly.
  • 3GPP R17 introduced the paging early indication PEI function to solve the problem of high error paging or infrequent paging that caused large power loss of terminal equipment in early R15 and other standards.
  • Figure 3 shows a schematic diagram of 5G early network paging.
  • the 5G core network (5GC) normally pages (the solid line in Figure 3) the terminal equipment in area 1, but at the same time it also mistakenly pages (the dotted line in Figure 3) the terminal equipment in area 2 . It can be seen that the error rate of early 5G paging is high, resulting in high power consumption of terminal equipment.
  • the paging early indication introduced in R17 is that the terminal device is notified before the paging opportunity PO whether the terminal device must monitor the paging channel. If the terminal device does not need to monitor the paging channel, it can skip the time-frequency synchronization before PO, or No need to be awakened.
  • PEI can notify terminal equipment through downlink control information (DCI) carried in the physical downlink control channel or through reference signals.
  • DCI downlink control information
  • PEI can carry sub-grouping information (Sub-grouping) to divide terminal devices that share the same paging opportunity into sub-groups, thereby avoiding low group paging rates and fewer false paging alarms.
  • PEI helps save UE power consumed when decoding false paging messages; compared with the basic paging process of early standards such as R15, PEI can save 17%-34% of UE energy , the specific energy saving value depends on the wireless conditions such as the UE's signal-to-interference plus Noise Ratio (SINR). Moreover, if PEI has supplementary subgroup information, an additional 10% energy can be saved, and the impact of high group paging rate can also be alleviated; the SIB1 type in the system information SIB (System Information Block, SIB) can be configured through PEI-config IE The cell informs the terminal device about the PEI configuration.
  • SIB System Information Block
  • DCI-based PEI can flexibly include subgroup indications and may also include short messages and other information, so DCI was selected as the first choice.
  • PEI means a limited size DCI search space or sequence, in each pager transmitted from the base station (gNB) before meeting.
  • Figure 4 shows a schematic diagram of DCI-based PEI.
  • the terminal device in the idle state or inactive state monitors the PEI search space, and when the current PEI indication is detected, the terminal device monitors the next PO; otherwise, the terminal device enters deep sleep and skips monitoring the PO.
  • the power saving gain that can be achieved is mainly due to the more limited PEI search space. Therefore, for terminal equipment that is not paged, PEI can reduce the number that does not need to be decoded within the PO, that is, it can reduce paging false alarms.
  • PDCCH Physical Downlink Control Channel
  • FIG. 5 shows a schematic diagram of paging group grouping.
  • PEI DCI or sequences can also be defined for specific idle/inactive terminal device groups in R17. Specifically, terminal devices in idle or inactive states are grouped into several paging groups (Group A, Group B, Group C) through several introduced grouping methods, and PEI DCI is scrambled in a group-specific manner. . Therefore, when an idle or inactive terminal device calculates an incorrect cyclic redundancy check (CRC) after decoding the PEI DCI using its own paging group scrambling code, it assumes that the transmitted PEI is for one or more For other paging groups, PO will be skipped to further reduce paging false alarms.
  • CRC cyclic redundancy check
  • the PEI function introduced by 3GPP in the R17 standard can reduce the power consumption of terminal equipment in the idle state or inactive state to a certain extent, achieving the purpose of energy saving.
  • the terminal device also receives PEI periodically, which causes a delay problem in the wake-up of the terminal device, and cannot meet the needs of some delay-sensitive and energy-consumption-sensitive services. For example, in the fire detection and fire extinguishing use case, within 1 to 2 seconds after the sensor detects a fire, the actuator should close the fire shutter and open the fire sprinkler head. A long wake-up period cannot meet the delay requirement. Therefore, the wake-up methods for terminal devices in related technologies cannot meet the delay requirements while reducing power consumption.
  • the R18 standard (Release 18) urgently needs an ultra-low power consumption mechanism that supports low latency, such as lower than unconnected discontinuous reception (IDLE DRX, eDRX) latency.
  • the network device modulates the first wake-up signal using a low-rate modulation method to obtain a low-rate wake-up signal; superimposes the low-rate wake-up signal and the OFDM signal to obtain a superimposed signal; and sends the superimposed signal to the terminal device.
  • the terminal device can use a demodulation method with lower power consumption to demodulate the superimposed signal, reducing the power consumption of the terminal device; at the same time, on the basis of low power consumption , the terminal device can detect the wake-up signal more frequently, and can receive the wake-up signal in real time, thereby realizing the rapid wake-up of the terminal device, meeting the needs of delay-sensitive services.
  • FIG. 6 is a schematic flowchart of a wake-up signal processing method provided by an embodiment of the present application. See Figure 6, the method may include:
  • the first wake-up signal may refer to a signal sent by the network device to the terminal device for waking up the terminal device.
  • the first wake-up signal can be represented by an LP-WUS signal (Low-Power Wake-Up Signal), corresponding to a low-power wake-up signal receiver (Low-Power Wake-Up Receiver, LP-WUR).
  • LP-WUS Low-Power Wake-Up Signal
  • the first wake-up signal can also be represented by other names or other abbreviations, which are not limited in the embodiments of the present application.
  • the low-rate modulation method may refer to a modulation method that can modulate the first wake-up signal into a low-rate signal.
  • the low-rate wake-up signal may refer to a modulated low-rate signal.
  • S602 Superimpose the low-rate wake-up signal and the OFDM signal to obtain a superimposed signal.
  • the OFDM signal may refer to a multi-carrier transmission signal in the 5G system, which is implemented based on Orthogonal Frequency Division Multiplexing (OFDM) technology.
  • OFDM signal is a high-rate, multi-carrier transmission signal widely used in 5G NR. It can realize parallel transmission of high-speed serial data, has good resistance to multipath fading, and can support multi-user access.
  • Network equipment can superimpose and fuse the low-rate wake-up signal and the OFDM signal, that is, modulate the low-rate wake-up signal into the OFDM signal to obtain a superimposed signal.
  • the OFDM signal can be a time domain waveform of modulated data symbols; when the network device does not need to send data, the OFDM signal can also be a time domain waveform of unmodulated data symbols.
  • the waveform can specifically be superimposed based on the actual needs of the network device, which is not limited in the embodiments of the present application.
  • the network device may send a superimposed signal to the terminal device. Since the rate difference between the low-rate wake-up signal and the OFDM signal is large, the terminal device can quickly demodulate the first wake-up signal based on the superimposed signal, and then determine whether the terminal device itself needs to be woken up, while reducing the power consumption of the terminal device. Reduced wake-up latency.
  • the network device modulates the first wake-up signal using a low-rate modulation method to obtain a low-rate wake-up signal; superimposes the low-rate wake-up signal and the OFDM signal to obtain a superimposed signal; and provides the terminal device with Send a superimposed signal.
  • the terminal device can quickly demodulate the two signals based on the superimposed signal, reducing the power consumption of the terminal device; at the same time, on the basis of low power consumption, the terminal device can always In the state of detecting the wake-up signal, the wake-up signal is received in real time, which can realize the rapid wake-up of the terminal device and meet the needs of delay-sensitive services.
  • the first wake-up signal includes a bit indication
  • the first wake-up signal includes a bit indication and identification; the identification includes at least one of a terminal device identification and a group identification to which the terminal device belongs.
  • a one-bit indication may also be called a single-bit indication.
  • the one-bit indication can be used to indicate whether the terminal device needs to be awakened. For example, a bit indicating a value of 1 can indicate waking up the terminal device, and a bit indicating a value of 0 can indicate that there is no need to wake up the terminal device.
  • the specific values and corresponding meanings can be based on actual needs. settings, the embodiments of this application do not limit this.
  • the form of one-bit indication is relatively concise, and the length of the first wake-up signal is also shorter, but the content it carries is limited.
  • the terminal device may not be able to determine whether it needs to execute the single-bit indication. In this case, it may need to be combined with other signals to determine the identity and other information corresponding to the one-bit indication.
  • the first wake-up signal can also be generated based on a bit indication and an identifier.
  • the identifier can be a terminal device identifier UE ID or a group ID to which the terminal device belongs. Group ID.
  • the first wake-up signal may be specifically in the form of a bit indication and a terminal device identifier, a bit indication and a group identifier to which the terminal device belongs, a bit indication and a terminal device identifier and a group identifier to which the terminal device belongs, etc. In this way, the length of the first wake-up signal increases and the content it carries increases; based on the first wake-up signal, the terminal device can quickly determine whether it needs to execute the first wake-up signal, ensuring the accuracy of signal transmission and execution.
  • the first wake-up signal is a signal obtained after simple encoding.
  • simple encoding includes any of the following:
  • Reverse non-return to zero coding Manchester coding, unipolar return to zero coding, differential biphase coding, Miller coding, modified Miller coding, pulse-intermittent coding, pulse position coding, biphase interval coding, pulse width coding.
  • the first wake-up signal may be a signal obtained by simply encoding the initial wake-up signal; or the network device may first simply encode the first wake-up signal and then modulate it using a low-rate modulation method.
  • the simple encoding method may be any one of the following (1) to (10).
  • other encoding methods other than the following encoding methods may also be used, which is not limited in the embodiments of the present application.
  • Various simple encoding methods are introduced below:
  • FIG. 7 shows a schematic diagram of a reverse non-return-to-zero encoding according to an embodiment of the present application.
  • the reverse non-return-to-zero encoding uses a high level to represent a binary "1" and a low level to represent a binary "0".
  • Reverse non-return-to-zero coding is not suitable for transmission, mainly for the following reasons: there is DC, and it is difficult for general channels to transmit frequency components near zero frequency; the receiving end decision threshold is related to the signal power, which is inconvenient to use; it cannot be directly used to extract bit synchronization signals.
  • NRZ does not contain bit synchronization signal frequency components; the transmission line is required to be grounded.
  • reverse non-return-to-zero coding is used to simply encode the wake-up signal, which can increase the coding gain and improve performance.
  • FIG. 8 shows a schematic diagram of Manchester encoding according to an embodiment of the present application.
  • the value of a certain bit is represented by the change (rising or falling) of the level in half a bit period within the bit length.
  • a negative transition in half a bit period represents binary " 1”
  • a positive transition at half a bit period represents a binary "0”. That is, the value of a certain bit is represented by a level change (rising/falling) of half a bit period (50%).
  • a negative transition (that is, the level changes from 1 to 0) at half a bit period represents a binary "1", and a positive transition represents a binary "0”.
  • Manchester encoding has the following characteristics:
  • Manchester coding is helpful in detecting data transmission errors when using load modulation or backscatter modulation of the load wave. This is because within the bit length, "no change" status is not allowed.
  • Feature 2 When the data bits sent at the same time have different values, the rising and falling edges of the reception cancel each other, resulting in an uninterrupted load wave signal within the entire bit length. Since this state is not allowed, the receiving end uses this The error can be used to determine the specific location where the collision occurred.
  • Feature 3 In Manchester coding, because transitions occur in the middle of each symbol, the receiving end can easily use it as a synchronization clock.
  • FIG. 9 shows a schematic diagram of a unipolar return-to-zero encoding according to an embodiment of the present application. As shown in Figure 9, when a code 1 is sent, a positive current is emitted, but the duration of the positive current is shorter than the time width of one symbol, that is, a narrow pulse is sent; when a code 0 is sent, no current is sent at all. This unipolar return-to-zero encoding can be used to extract the bit synchronization signal.
  • FIG. 10 shows a schematic diagram of a differential bi-phase encoding according to an embodiment of the present application. As shown in Figure 10, any edge in the differential biphase encoding in the half bit period represents a binary "0", while no edge represents a binary "1", as shown in the figure below. Additionally, at the beginning of each bit period, the levels are inverted. Therefore, the bit beat is relatively easy for the receiver to reconstruct.
  • Miller coding (Miller).
  • Figure 11 shows a schematic diagram of Miller coding according to an embodiment of the present application. As shown in Figure 11, Miller coding represents a binary "1" at any edge within a half-bit period, and a constant level through the next bit period represents a binary "0". A sequence of bit cycles begins with level alternations, and the bit beat is easier for the receiver to reconstruct.
  • Table 1 below shows the specific coding rules of Miller coding:
  • FIG 12 shows a schematic diagram of a pulse-intermittent encoding according to an embodiment of the present application.
  • the pause duration t before the next pulse represents a binary "1”
  • the pause duration 2t before the next pulse represents a binary "0”.
  • this encoding method is used for data transmission from the reader to the electronic tag in an inductively coupled radio frequency system. Since the pulse conversion time is very short, it can ensure high accuracy from the reader during the data transmission process.
  • the radio frequency tag is continuously supplied with energy in the frequency field.
  • Pulse Position Modulation FIG. 13 shows a schematic diagram of pulse position encoding according to an embodiment of the present application. As shown in Figure 13, pulse position encoding is similar to the above-mentioned pulse intermittent encoding. The difference is that in pulse position encoding, the width of each data bit is consistent. Among them, the pulse represents "00" in the first time period, "01” in the second time period, "10” in the third time period, and "11" in the fourth time period.
  • FIG 14 shows a schematic diagram of a bi-phase interval code encoding according to an embodiment of the present application.
  • the working principle of FM0 encoding is to use level changes within a bit window to represent logic. If the level flips from the beginning of the bit window, it represents a logic "1". If the level flips in the middle of the bit window in addition to the beginning of the bit window, it represents a logic "0".
  • Pulse interval encoding (10) Pulse interval encoding (PIE).
  • Figure 15 shows a schematic diagram of pulse width encoding according to an embodiment of the present application.
  • the principle of pulse width encoding is to represent data by defining different time widths between the falling edges of pulses.
  • the data frame consists of SOF (start of frame signal), EOF (end of frame signal), data 0 and 1.
  • SOF start of frame signal
  • EOF end of frame signal
  • data 0 and 1 Within the reference time interval Tari interval, this time period is the time width of the falling edges of two adjacent pulses, lasting 25 ⁇ s.
  • (1) is the rule of pulse width encoding
  • (2) is a specific pulse diagram.
  • the low-rate modulation method includes on-off keying OOK modulation, pulse modulation and A specific function modulates one of them.
  • the on-off keying OOK modulation can set one amplitude of the signal to be 0 and the other amplitude to be non-0.
  • FIG. 16 shows a schematic diagram of an OOK modulated signal waveform.
  • V m (t) is the digital signal to be sent
  • Acos (2 ⁇ f c t) is the unmodulated carrier wave
  • V AM (t) is the OOK modulated carrier signal.
  • FIG. 17 shows a schematic diagram of a signal waveform of amplitude shift keying ASK modulation.
  • Each amplitude can represent 2 bits. bits, so that its transmission rate is 2 times that of OOK.
  • Pulse modulation can refer to a modulation method based on pulse signals, and its amplitude changes simply.
  • Specific function modulation refers to modulating signals based on various functions that can be flexibly set. Illustratively, the following formula (1) shows a specific form of a specific function:
  • n is less than (??+??cp)/2, that is, when n takes the value 0, 1, 2,..., (??+??cp)/2-1, a (n) is equal to 1; when n is equal to or greater than (??+??cp)/2, a(n) is equal to 0.
  • x(n) is the output value of the signal, and B can be a specific value in the single-bit indication.
  • the specific calculation logic is as follows:
  • the specific function can also be in other forms, and the low-rate modulation method can also be other modulation methods besides the above three methods, which are not limited in the embodiments of the present application.
  • the first wake-up signal is modulated through a low-rate modulation method to obtain a low-rate wake-up signal.
  • the reception method is relatively simple, and the judgment can be completed based on the amplitude of the waveform. This can be achieved by a low-complexity receiver, which can further reduce the energy consumption of the terminal equipment.
  • the superimposed signal is obtained by modulating a low-rate wake-up signal to an OFDM signal on at least one symbol; the time-domain waveform width of the low-rate wake-up signal is the same as at least one symbol; and/or,
  • the superimposed signal is obtained by superimposing the low-rate wake-up signal and the time-domain OFDM signal of pre-configured frequency domain resources.
  • the OFDM signal in the embodiment of the present application may refer to the OFDM baseband time domain waveform.
  • the time domain waveform of OFDM is the signal after Inverse Fast Fourier Transform (IFFT).
  • IFFT Inverse Fast Fourier Transform
  • a time-domain waveform of constant amplitude that is, a low-rate wake-up signal
  • the waveform width of the time-domain waveform of the low-rate wake-up signal can be the same as at least one symbol.
  • the low-rate wake-up signal may have one low-rate modulation symbol or may have multiple low-rate modulation symbols.
  • the low-rate wake-up signal has three OOK modulation symbols, assuming that they are modulation symbol 1, modulation symbol 2, and modulation symbol 3, this can correspond to the OFDM time domain waveform on the three symbols, assuming that the symbols are respectively a, symbol b, symbol c.
  • the network device can modulate modulation symbol 1 to the OFDM time domain waveform on symbol a, modulate modulation symbol 2 to the OFDM time domain waveform on symbol b, and modulate modulation symbol 3 to the OFDM time domain waveform on symbol c. OFDM time domain waveform to achieve signal superposition.
  • the low-rate wake-up signal can be directly loaded or modulated onto the OFDM signal on at least one symbol, so that the low-rate wake-up signal and the OFDM signal can be superimposed to obtain a superimposed signal.
  • IFFT transformation when forming the time domain waveform of the OFDM signal, based on the content in the 3GPP protocol, IFFT transformation can be performed as follows:
  • the low-rate wake-up signal can be expressed as S wus-ook (t)
  • the OFDM time domain waveform can be expressed as S l (p, u) (t)
  • the OFDM signal can be a time domain waveform of modulated data symbols, so that a low-rate wake-up signal can be sent without affecting the original data transmission of the network device and improve the efficiency of data transmission.
  • OFDM can Includes time domain waveforms of other data.
  • the superimposed signal After superimposing the low-rate wake-up signal and the OFDM signal, the superimposed signal can be expressed as S wus-ook (t)+S l (p,u) (t), or it can be expressed as S wus-ook (t)*S l (p, u) (t) or S wus-ook (t) S l (p, u) (t), etc., the embodiments of the present application are not limited to this.
  • the low-rate wake-up signal can have the same time-domain waveform width as the OFDM signal, and the network device can superimpose the low-rate wake-up signal and the OFDM signal to obtain a superimposed signal.
  • network equipment can superimpose the low-rate wake-up signal with the time-domain OFDM waveform of a preconfigured (predefined) frequency domain resource to obtain a superimposed signal.
  • the predefined OFDM waveform of a frequency domain resource may refer to the time domain OFDM waveform of 20 resource blocks (RBs) of the synchronous broadcast signal SSB, etc.
  • the embodiment of the present application is specific for the time domain OFDM waveform of the frequency domain resource. The form is not limited.
  • Manner 1 In a possible implementation, at least one symbol is located in at least one time slot.
  • the wireless frame is the basic data transmission cycle of the wireless network
  • the subframe is the allocation unit of uplink and downlink subframes.
  • the period of a radio frame is usually 10 milliseconds, and the period of a subframe can be 1 millisecond.
  • a subframe may include multiple time slots, which may refer to the smallest unit of data scheduling and synchronization.
  • a time slot may include 14 or 12 symbols.
  • symbol is the basic unit of modulation and can be determined based on sub-carrier space (SCS). Since 5G NR provides a variety of subcarrier intervals, the frame structure of 5G is also more flexible, and there are many situations in the specific periods of time slots and subframes, which can be determined according to the network configuration.
  • the low-rate wake-up signal when superimposing the low-rate wake-up signal and the OFDM signal, the low-rate wake-up signal can be loaded in at least one time slot of the time domain waveform of the OFDM signal. That is, the network device may modulate the low-rate wake-up signal into at least one symbol in the same time slot, or may modulate the low-rate wake-up signal into several symbols in multiple time slots.
  • At least one symbol is a symbol including the synchronous broadcast signal SSB; the low-rate wake-up signal is carried in at least one symbol including the synchronous broadcast signal SSB.
  • a synchronization broadcast signal may refer to a signal used for network synchronization.
  • the network device can send the synchronization broadcast signal SSB to the terminal device, so that the terminal device completes synchronization with the network.
  • the low-rate wake-up signal may be carried on at least one symbol including the synchronous broadcast signal SSB.
  • the SSB signal corresponds to 4 symbols, and the low-rate wake-up signal can be carried in at least one of the 4 symbols.
  • low-rate wake-up signals It may also be carried on at least one other symbol of the time slot where the synchronous broadcast signal SSB is located, for example, it may be carried on the last two symbols of the time slot where the SSB is located.
  • the embodiment of the present application does not limit the specific number of symbols and the specific location where the low-rate wake-up signal is located.
  • At least one symbol is a symbol including system information SIB; the low-rate wake-up signal is carried in at least one symbol including system information SIB.
  • the system information SIB is the system information broadcast by the network device.
  • the low-rate wake-up signal may be carried on at least one symbol including system information SIB.
  • the low-rate wake-up signal may also be carried on at least one other symbol of the time slot where the system information SIB is located. The embodiments of the present application do not limit this.
  • At least one symbol in the time domain, at least one symbol may be a symbol including other signals, and the low-rate wake-up signal may be carried on at least one symbol including other signals.
  • the time domain OFDM waveform of frequency domain resources of signals such as SSB and SIB can be superimposed with the low-rate wake-up signal to obtain a superimposed signal. In this way, it is possible to ensure the normal transmission of low-rate wake-up signals without affecting the normal transmission of data by network equipment, realize resource multiplexing, and at the same time reduce the power consumption of terminal equipment.
  • whether a low-rate wake-up signal exists is indicated by system information SIB, downlink control information DCI, RRC or MAC-CE.
  • the network device needs to notify the terminal device through a specific indication that the received superimposed signal includes a low-rate wake-up signal, that is, indicating the existence of the LP-WUS signal.
  • the existence of LP-WUS can be indicated through system information SIB, downlink control information DCI, radio resource control RRC or media access control-control entity (Media Access Control-Control Entity, MAC-CE). Specifically, it can be used 1-bit instruction, etc.
  • the embodiments of this application do not limit the specific instruction method.
  • the network device may indicate whether the low-rate wake-up signal exists through the information element in the system information SIB.
  • the cell indication in the SIB indicates that the signal received by the terminal device at this time has a superposition of a low-rate wake-up signal, that is, there is an LP-WUS signal.
  • the network device can also indicate the presence of the LP-WUS signal in the superimposed signal through RRC signaling or MAC-CE.
  • the network device may also indicate whether a low-rate wake-up signal exists through downlink control information DCI.
  • the indication can be based on the existing DCI.
  • a specific format type (format) in the DCI can be multiplexed or adjusted to indicate a low-rate wake-up signal, or a new DCI can be configured to realize the low-rate wake-up signal.
  • instruct Taking DCI format 2-1 as an example, there are two specific instructions:
  • the downlink control information DCI format 2-1 indicates the downlink control information after scrambling the time identifier RNTI.
  • a Radio Network Temporary Identity can be used to distinguish the identity of the terminal device. Scrambling can refer to using a pseudo-random code sequence to multiply the original signal to encrypt the signal. In the original 3GPP standards and protocols, users before R17 were descrambling based on their original RNTI to achieve their original functions.
  • a new RNTI can be configured to indicate whether a low-rate wake-up signal exists. The network device scrambles DCI format 2-1 based on the new RNTI, and the terminal device scrambles DCI format 2-1 based on the new RNTI. 2-1 to perform descrambling to achieve accurate indication of LP-WUS.
  • Method 2 whether the low-rate wake-up signal exists is indicated by at least one newly added bit in the downlink control information DCI format 2-1.
  • the network device can add at least one bit to the original DCI format 2-1 to indicate whether a low-rate wake-up signal exists. For example, taking the addition of 1 bit in DCI format 2-1 as an example, the value 1 can be used to indicate the preemption indication, and the value 0 can be used to indicate the presence of the LP-WUS signal. Of course, multiple bits can also be added to carry more information, which is not limited in the embodiments of this application.
  • the low-rate wake-up signal may be carried on the symbol where the specific signal is located. In this way, after determining that the low-rate wake-up signal exists, the terminal device can quickly locate at least one symbol where the low-rate wake-up signal is located.
  • the low-rate wake-up signal may be carried on the last two symbols of the timeslot of the SSB.
  • the terminal device determines that the low-rate wake-up signal exists based on SIB information elements, DCI, RRC, or MAC-CE.
  • the two symbols where the low-rate wake-up signal is located can be quickly determined, and subsequent demodulation or compensation processing can be performed.
  • the low-rate wake-up signal can also be carried on the symbol where the SSB is located. At least one symbol corresponding to the low-rate wake-up signal can be the same number of symbols as the SSB. In this way, after the terminal device determines that there is a low-rate wake-up signal, it can be based on the symbol where the SSB is located. The symbols are demodulated or compensated.
  • the DCI is also used to indicate the target position corresponding to the low-rate wake-up signal; the target position is at least one symbol where the low-rate wake-up signal is located in the OFDM signal.
  • DCI may also be used to indicate at least one symbol where the low-rate wake-up signal is located.
  • network equipment can indicate the target location through DCI format 2-1.
  • the DCI format 2-1 is used for pre-emption indication (PI) in the original standard and can indicate which symbols are punctured. are preempted, so that the terminal device skips these preempted symbols during processing.
  • PI pre-emption indication
  • the network device can also use DCI in other formats to indicate the target location, which is not limited in the embodiments of the present application.
  • the network device may indicate whether the low-rate wake-up signal exists through the SIB information element.
  • the DCI format 2-1 may indicate at least one symbol where the low-rate wake-up signal is located. In this way, network equipment can reuse the DCI function to indicate low
  • the target location of the rate wake-up signal makes the superposition method of the low-rate wake-up signal and OFDM more flexible. It is no longer limited to carrying the low-rate wake-up signal to the symbol where the specific signal is located, and can meet the special needs of more actual scenarios.
  • the wake-up signal processing process will be described in detail from the perspective of the terminal device in conjunction with the embodiment shown in FIG. 18 .
  • FIG. 18 is a schematic flowchart of yet another wake-up signal processing provided by an embodiment of the present application. See Figure 18, the method may include:
  • the terminal device can receive the superimposed signal sent by the network device, and can subsequently demodulate the superimposed signal.
  • S1802. Demodulate the superimposed signal to obtain the first wake-up signal.
  • the terminal device can demodulate the two signals. Afterwards, the terminal device may determine whether it needs to be awakened based on the first wake-up signal.
  • the terminal device receives the superimposed signal sent by the network device; the superimposed signal is obtained by superimposing the low-rate wake-up signal and the OFDM signal by the network device; the low-rate wake-up signal is the first wake-up signal of the network device.
  • the signal is modulated using a low-rate modulation method; the superimposed signal is demodulated to obtain the first wake-up signal.
  • the terminal device can use a demodulation method with lower power consumption to demodulate the superimposed signal, reducing the power consumption of the terminal device; at the same time, on the basis of low power consumption, the terminal The device can detect wake-up signals more frequently, and can receive wake-up signals in real time, thereby realizing rapid wake-up of terminal devices, meeting the needs of delay-sensitive services.
  • the wake-up signal processing process will be described in detail from the perspective of the terminal device in conjunction with the embodiment shown in FIG. 19 .
  • FIG 19 is a schematic flowchart of yet another wake-up signal processing provided by an embodiment of the present application. See Figure 19, the method may include:
  • the first wake-up signal is obtained by simple receiver demodulation for the power-saving terminal device.
  • the power-saving terminal equipment may refer to terminal equipment with high energy efficiency requirements, such as sensors and actuators.
  • a simple receiver can refer to a low-complexity receiver, or a low-power receiver. This simple receiver can demodulate the superimposed signal in a simpler way and consumes less power. Since the low-rate wake-up signal is modulated by the first wake-up signal through the low-rate modulation method, a simple receiver does not need to perform IFFT transformation, has lower power consumption, and can detect the low-rate wake-up signal more frequently, or it can always be detected. status, realizing real-time detection of wake-up signals and quickly waking up terminal devices, meeting the needs of delay-sensitive services.
  • the first wake-up signal is obtained by demodulating the non-power-saving terminal device through a complex receiver.
  • non-power-saving terminal equipment may refer to terminal equipment that does not have high energy efficiency requirements, such as some rechargeable 5G terminals.
  • Non-power-saving terminal equipment can use common receivers or complex receivers to demodulate OFDM signals, obtain data or control information sent from the network equipment side to the current terminal equipment, and realize normal transmission of data.
  • the power-saving terminal device and the non-power-saving terminal device can be the same terminal device, corresponding to the two states of insufficient power and sufficient power of the terminal device.
  • both simple receivers and complex receivers can be installed at the same time to meet the actual needs of the terminal device in different scenarios.
  • the first wake-up signal is a superposed signal for the non-power-saving terminal based on an indication of whether a low-rate wake-up signal exists.
  • the non-power-saving terminal device can determine whether the low-rate wake-up signal exists based on the system information SIB information element, downlink control information DCI, RRC or MAC-CE indication, and then perform corresponding compensation processing.
  • the specific indication method of the low-rate wake-up signal may refer to the description on the network device side, and will not be described again in the embodiment of the present application.
  • the terminal device is a non-power-saving terminal device, eliminate the first wake-up signal, and demodulate the OFDM signal based on the superimposed signal; or,
  • the OFDM signal is obtained through complex receiver demodulation, and the OFDM signal is amplitude compensated based on the low-rate wake-up signal.
  • the non-power-saving terminal equipment after determining that the low-rate wake-up signal exists, the non-power-saving terminal equipment can quickly locate and demodulate the first wake-up signal among the low-rate wake-up signals, and eliminate this signal , to eliminate the impact on the original signal in OFDM, and then demodulate the OFDM signal, which can ensure the effectiveness of data reception.
  • Non-power-saving terminal equipment can also divide the superimposed signal by the amplitude of the low-rate wake-up signal according to the amplitude of the low-rate wake-up signal to perform amplitude compensation on the OFDM signal and eliminate the impact of the low-rate wake-up signal on the OFDM signal.
  • the non-power-saving terminal equipment needs to perform compensation processing on the SSB symbols. If the low-rate wake-up signal is only carried on the last two symbols of the time slot where the synchronous broadcast signal SSB is located, the non-power-saving terminal equipment needs to perform compensation processing on the signals carried on these two symbols in the time slot to ensure that the network equipment and Normal transmission of original data between terminal devices.
  • the terminal device can demodulate the superimposed signal in other ways based on the actual situation and actual needs to obtain the first wake-up signal. This is not limited in the embodiments of the present application.
  • FIG 20 is a schematic structural diagram of a wake-up signal processing device provided by an embodiment of the present application.
  • the wake-up signal processing device 200 may include:
  • Modulation module 201 is used to modulate the first wake-up signal using a low-rate modulation method to obtain a low-rate wake-up signal;
  • the superposition module 202 is used to superimpose the low-rate wake-up signal and the OFDM signal to obtain a superimposed signal;
  • the sending module 203 is used to send the superimposed signal.
  • the wake-up signal processing device 200 provided by the embodiment of the present application can execute the technical solution shown in the above method embodiment. Its implementation principles and beneficial effects are similar and will not be described again here.
  • the superimposed signal is obtained by modulating a low-rate wake-up signal to an OFDM signal on at least one symbol; the time-domain waveform width of the low-rate wake-up signal is the same as at least one symbol; and/or,
  • the superimposed signal is obtained by superimposing the low-rate wake-up signal and the time-domain OFDM signal of pre-configured frequency domain resources.
  • At least one symbol is located in at least one time slot.
  • At least one symbol is a symbol including the synchronous broadcast signal SSB; the low-rate wake-up signal is carried in at least one symbol including the synchronous broadcast signal SSB.
  • At least one symbol is a symbol including system information SIB; the low-rate wake-up signal is carried in at least one symbol including system information SIB.
  • whether a low-rate wake-up signal exists is indicated by system information SIB, downlink control information DCI, RRC or MAC-CE.
  • the presence of a low-rate wake-up signal is indicated by the DCI format 2-1 after scrambling with the new wireless network temporary identifier RNTI.
  • whether the low-rate wake-up signal exists is indicated by at least one newly added bit of DCI format 2-1.
  • the DCI is also used to indicate the target position corresponding to the low-rate wake-up signal; the target position is at least one symbol where the low-rate wake-up signal is located in the OFDM signal.
  • the first wake-up signal includes a bit indication
  • the first wake-up signal includes a bit indication and an identifier; the identifier includes at least one of a terminal device identifier and a group identifier to which the terminal device belongs.
  • the low-rate modulation method includes one of on-off keying OOK modulation, pulse modulation, and specific function modulation.
  • the first wake-up signal is a wake-up signal obtained after simple encoding.
  • simple encoding includes any of the following:
  • Reverse non-return to zero coding Manchester coding, unipolar return to zero coding, differential biphase coding, Miller coding, modified Miller coding, pulse-intermittent coding, pulse position coding, biphase interval coding, pulse width coding.
  • the wake-up signal processing device 200 provided by the embodiment of the present application can execute the technical solution shown in the above method embodiment. Its implementation principles and beneficial effects are similar and will not be described again here.
  • the wake-up signal processing device 200 may specifically be a chip, a chip module, etc., which is not limited in the embodiments of the present application.
  • FIG. 21 is a schematic structural diagram of another wake-up signal processing device provided by an embodiment of the present application.
  • the wake-up signal processing device 210 may include:
  • the receiving module 211 is used to receive the superimposed signal; the superimposed signal is obtained by superposing the low-rate wake-up signal and the OFDM signal; the low-rate wake-up signal is obtained by modulating the first wake-up signal using a low-rate modulation method;
  • the demodulation module 212 is used to demodulate the superimposed signal to obtain the first wake-up signal.
  • the wake-up signal processing device 210 provided in the embodiment of the present application can execute the technical solution shown in the above method embodiment. Its implementation principles and beneficial effects are similar and will not be described again here.
  • the wake-up signal processing device 210 provided in the embodiment of the present application can execute the technical solution shown in the above method embodiment. Its implementation principles and beneficial effects are similar and will not be described again here.
  • the wake-up signal processing device 210 may specifically be a chip, a chip module, etc., which is not limited in the embodiments of the present application.
  • FIG. 22 is a schematic structural diagram of a wake-up signal processing device provided by an embodiment of the present application.
  • the wake-up signal processing device 220 may include: a memory 221 and a processor 222 .
  • the memory 221 and the processor 222 are connected to each other through a bus 223.
  • Memory 221 is used to store program instructions
  • the processor 222 is used to execute program instructions stored in the memory to implement the wake-up signal processing method shown in the above embodiment.
  • the wake-up signal processing device shown in the embodiment of FIG. 22 can execute the technical solution shown in the above method embodiment. Its implementation principles and beneficial effects are similar and will not be described again here.
  • Embodiments of the present application provide a computer-readable storage medium.
  • the computer-readable storage medium stores computer-executable files. Line instructions are used to implement the above wake-up signal processing method when the computer execution instructions are executed by the processor.
  • Embodiments of the present application may also provide a computer program product, including a computer program.
  • a computer program When the computer program is executed by a processor, the above wake-up signal processing method can be implemented.
  • An embodiment of the present application provides a chip.
  • a computer program is stored on the chip.
  • the computer program is executed by the chip, the above wake-up signal processing method is implemented.
  • An embodiment of the present application also provides a chip module.
  • a computer program is stored on the chip module.
  • the computer program is executed by the chip module, the above wake-up signal processing method is implemented.
  • processors mentioned in the embodiments of this application may be a central processing unit (CPU), or other general-purpose processor, digital signal processor (DSP), or dedicated integrated processor.
  • Circuit application specific integrated circuit, ASIC
  • FPGA field programmable gate array
  • a general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.
  • non-volatile memory can be read-only memory (ROM), programmable ROM (PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically removable memory. Erase electrically programmable read-only memory (EPROM, EEPROM) or flash memory. Volatile memory can be random access memory (RAM), which is used as an external cache.
  • RAM random access memory
  • RAM static random access memory
  • DRAM dynamic random access memory
  • SDRAM synchronous dynamic random access memory
  • double data rate SDRAM double data rate SDRAM
  • DDR SDRAM double data rate SDRAM
  • ESDRAM enhanced synchronous dynamic random access memory
  • synchronous link dynamic random access memory direct ram bus RAM, DR RAM
  • DSP dynamic random access memory
  • ASIC application specific integrated circuit
  • FPGA field-programmable gate array
  • DDR RAM direct memory bus random access memory
  • Embodiments of the present application are described with reference to flowcharts and/or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present application. It will be understood that each process and/or block in the flowchart illustrations and/or block diagrams, and combinations of processes and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processing unit of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing device to produce a machine that causes execution by the processing unit of the computer or other programmable data processing device. The instructions create means for performing the functions specified in the flow diagram process or processes and/or the block diagram block or blocks.
  • These computer program instructions may also be stored in a computer-readable memory that causes a computer or other programmable data processing apparatus to operate in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction means, the instructions
  • the device implements the functions specified in a process or processes of the flowchart and/or a block or blocks of the block diagram.
  • These computer program instructions may also be loaded onto a computer or other programmable data processing device, causing a series of operating steps to be performed on the computer or other programmable device to produce computer-implemented processing, thereby executing on the computer or other programmable device.
  • Instructions provide steps for implementing the functions specified in a process or processes of a flowchart diagram and/or a block or blocks of a block diagram.
  • each device and product described in the above embodiments may be software modules/units or hardware modules/units, or they may be partly software modules/units and partly hardware modules/units.
  • Various devices and products can be applied to or integrated into chips, chip modules or terminals.
  • each module/chip contained therein can be implemented in the form of hardware such as circuits, or at least some of the modules/units can be implemented in the form of software programs.
  • the software program runs on the processor integrated inside the chip, and the remaining modules/units can be implemented using circuits and other hardware methods.
  • the term “including” and its variations may refer to non-limiting inclusion; the term “or” and its variations may refer to “and/or”.
  • the terms “first”, “second”, etc. in this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.
  • “plurality” means two or more.
  • “And/or” describes the relationship between related objects, indicating that there can be three relationships. For example, A and/or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. The character “/" generally indicates that the related objects are in an "or” relationship.

Abstract

本申请提供一种唤醒信号处理方法、装置以及设备，该方法包括：网络设备将第一唤醒信号采用低速率调制方式进行调制，得到低速率唤醒信号；将低速率唤醒信号与OFDM信号进行叠加，得到叠加信号；向终端设备发送叠加信号。这样，由于低速率唤醒信号与OFDM信号的速率差异大，终端设备可以使用功耗较低的解调方式对叠加信号进行解调，降低了终端设备的功耗；同时在低功耗的基础上，终端设备可以更加频繁地检测唤醒信号，可以实现实时接收唤醒信号，进而能够实现终端设备的快速唤醒，满足了时延敏感类业务的需求。

Description

唤醒信号处理方法、装置以及设备
本申请要求于2022年08月11日提交中国专利局、申请号为202210963482.5、申请名称为“唤醒信号处理方法、装置以及设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及通信技术领域，尤其涉及一种唤醒信号处理方法、装置以及设备。
背景技术
在无线通信技术中，例如在第五代移动通信技术(5th Generation Mobile Communication Technology，5G)中，用户设备(User Equipment，UE)处于空闲态(Radio Resource Control IDLE，RRC-IDLE)或非激活态(RRC-INACTIVE)时，需要周期性的被唤醒并在寻呼时机(paging occasion，PO)内监听寻呼(paging)消息。这种周期性唤醒方式对UE的功率消耗较大，导致UE能效不高。
为了实现UE在空闲态或者非激活态下节能的目的，第三代合作伙伴计划(3rd Generation Partnership Project，3GPP)在R17标准中(Release 17)针对5G新空口系统(New Radio，NR)引入了寻呼增强功能，即寻呼早指示(Paging Early Indication，PEI)。PEI用于在寻呼时机(paging occasion，PO)之前，通知UE是否需要在PO内唤醒并监听寻呼消息。这样，能够在一定程度上降低UE的功率损耗。
但是，UE对于PEI的接收也是周期性的，进而导致UE的唤醒存在一定的时延，无法满足时延敏感类业务的实际需求。即，相关技术中的对UE的唤醒方式，无法在降低能耗的同时满足时延需求。
发明内容
本申请提供一种唤醒信号处理方法、装置以及设备，在降低终端设备能耗的同时满足时延需求。
第一方面，本申请实施例提供一种唤醒信号处理方法，包括：
将第一唤醒信号采用低速率调制方式进行调制，得到低速率唤醒信号；
将所述低速率唤醒信号与OFDM信号进行叠加，得到叠加信号；
发送所述叠加信号。
在一种可能的实施方式中，所述叠加信号是将所述低速率唤醒信号调制至至少一个符号上的OFDM信号得到的；所述低速率唤醒信号的时域波形宽度与所述至少一个符号相同；和/或，
所述叠加信号是将所述低速率唤醒信号与预配置频域资源的时域OFDM信号进行叠加得到的。
在一种可能的实施方式中，所述至少一个符号位于至少一个时隙内。
在一种可能的实施方式中，所述至少一个符号为包含同步广播信号SSB的符号；所述低速率唤醒信号承载于包括所述同步广播信号SSB的至少一个符号中。
在一种可能的实施方式中，所述至少一个符号为包含系统信息SIB的符号；所述低速率唤醒信号承载于包括所述系统信息SIB的至少一个符号中。
在一种可能的实施方式中，所述低速率唤醒信号是否存在由系统信息SIB、下行链路控制信息DCI、RRC或者MAC-CE指示。
在一种可能的实施方式中，所述低速率唤醒信号是否存在由通过新的无线网络临时标识符RNTI进行加扰之后的DCI format 2-1指示。
在一种可能的实施方式中，所述低速率唤醒信号是否存在由所述DCI format 2-1新增加的至少一个比特位指示。
在一种可能的实施方式中，所述DCI还用于指示所述低速率唤醒信号对应的目标位置；所述目标位置为低速率唤醒信号在所述OFDM信号中所在的至少一个符号。
在一种可能的实施方式中，所述第一唤醒信号包括一个比特指示；或者，
所述第一唤醒信号包括一个比特指示和标识；所述标识包括终端设备标识、终端设备所属分组标识中的至少一种。
在一种可能的实施方式中，所述低速率调制方式包括通断键控OOK调制、脉冲调制以及特定函数调制其中一种。
在一种可能的实施方式中，所述第一唤醒信号为经过简单编码后得到的唤醒信号。
在一种可能的实施方式中，所述简单编码包括以下任意一种：
反向不归零编码、曼彻斯特编码、单极性归零编码、差动双相编码、密勒编码、修正密勒码编码、脉冲-间歇编码、脉冲位置编码、双相间隔码编码、脉冲宽度编码。
第二方面，本申请实施例提供另一种唤醒信号处理方法，包括：
接收叠加信号；所述叠加信号为低速率唤醒信号与OFDM信号叠加得到的；所述低速率唤醒信号为第一唤醒信号采用低速率调制方式进行调制得到的；
将所述叠加信号进行解调，得到所述第一唤醒信号。
在一种可能的实施方式中，所述叠加信号是将所述低速率唤醒信号调制至至少一个符号上的OFDM信号得到的；所述低速率唤醒信号的时域波形宽度与所述至少一个符号相同；和/或，
所述叠加信号是将所述低速率唤醒信号与预配置频域资源的时域OFDM信号进行叠加得到的。
在一种可能的实施方式中，所述至少一个符号位于至少一个时隙内。
在一种可能的实施方式中，所述至少一个符号为包含同步广播信号SSB的符号；所述低速率唤醒信号承载于包括所述同步广播信号SSB的至少一个符号中。
在一种可能的实施方式中，所述至少一个符号为包含系统信息SIB的符号；所述低速率唤醒信号承载于包括所述系统信息SIB的至少一个符号中。
在一种可能的实施方式中，所述低速率唤醒信号是否存在由系统信息SIB、下行链路控制信息DCI、RRC或者MAC-CE指示。
在一种可能的实施方式中，所述低速率唤醒信号是否存在由通过新的无线网络临时标识符RNTI进行加扰之后的DCI format 2-1指示。
在一种可能的实施方式中，所述低速率唤醒信号是否存在由所述DCI format 2-1新增加的至少一个比特位指示。
在一种可能的实施方式中，所述DCI还用于指示所述低速率唤醒信号对应的目标位置；所述目标位置为低速率唤醒信号在所述OFDM信号中所在的至少一个符号。
在一种可能的实施方式中，所述第一唤醒信号包括一个比特指示；或者，
所述第一唤醒信号包括一个比特指示和标识；所述标识包括终端设备标识、终端设备所属分组标识中的至少一种。
在一种可能的实施方式中，所述低速率调制方式包括通断键控OOK调制、脉冲调制以及特定函数调制其中一种。
在一种可能的实施方式中，所述第一唤醒信号为经过简单编码后得到的唤醒信号。
在一种可能的实施方式中，所述简单编码包括以下任意一种：
反向不归零编码、曼彻斯特编码、单极性归零编码、差动双相编码、密勒编码、修正密勒码编码、脉冲-间歇编码、脉冲位置编码、双相间隔码编码、脉冲宽度编码。
第三方面，本申请实施例提供一种唤醒信号处理装置，包括：
调制模块，用于将第一唤醒信号采用低速率调制方式进行调制，得到低速率唤醒信号；
叠加模块，用于将所述低速率唤醒信号与OFDM信号进行叠加，得到叠加信号；
发送模块，用于发送所述叠加信号。
在一种可能的实施方式中，所述叠加信号是将所述低速率唤醒信号调制至至少一个符号上的OFDM信号得到的；所述低速率唤醒信号的时域波形宽度与所述至少一个符号相同；和/或，
所述叠加信号是将所述低速率唤醒信号与预配置频域资源的时域OFDM信号进行叠加得到的。
在一种可能的实施方式中，所述至少一个符号位于至少一个时隙内。
在一种可能的实施方式中，所述至少一个符号为包含同步广播信号SSB的符号；所述低速率唤醒信号承载于包括所述同步广播信号SSB的至少一个符号中。
在一种可能的实施方式中，所述至少一个符号为包含系统信息SIB的符号；所述低速率唤醒信号承载于包括所述系统信息SIB的至少一个符号中。
在一种可能的实施方式中，所述低速率唤醒信号是否存在由系统信息SIB、下行链路控制信息DCI、RRC或者MAC-CE指示。
在一种可能的实施方式中，所述低速率唤醒信号是否存在由通过新的无线网络临时标识符RNTI进行加扰之后的DCI format 2-1指示。
在一种可能的实施方式中，所述低速率唤醒信号是否存在由所述DCI format 2-1新增加的至少一个比特位指示。
在一种可能的实施方式中，所述DCI还用于指示所述低速率唤醒信号对应的目标位置；所述目标位置为低速率唤醒信号在所述OFDM信号中所在的至少一个符号。
在一种可能的实施方式中，所述第一唤醒信号包括一个比特指示；或者，
所述第一唤醒信号包括一个比特指示和标识；所述标识包括终端设备标识、终端设备所属分组标识中的至少一种。
在一种可能的实施方式中，所述低速率调制方式包括通断键控OOK调制、脉冲调制以及特定函数调制其中一种。
在一种可能的实施方式中，所述第一唤醒信号为经过简单编码后得到的唤醒信号。
在一种可能的实施方式中，所述简单编码包括以下任意一种：
反向不归零编码、曼彻斯特编码、单极性归零编码、差动双相编码、密勒编码、修正密勒码编码、脉冲-间歇编码、脉冲位置编码、双相间隔码编码、脉冲宽度编码。
第四方面，本申请实施例提供一种唤醒信号处理装置，包括：
接收模块，用于接收叠加信号；所述叠加信号为低速率唤醒信号与OFDM信号叠加得到的；所述低速率唤醒信号为第一唤醒信号采用低速率调制方式进行调制得到的；
解调模块，用于将所述叠加信号进行解调，得到所述第一唤醒信号。
第五方面，本申请实施例提供一种唤醒信号处理设备，包括：处理器、存储器；
所述存储器存储计算机执行指令；
所述处理器执行所述存储器存储的计算机执行指令，实现如第一方面或第二方面任一项所述的方法。
第六方面，本申请实施例提供一种计算机可读存储介质，所述计算机可读存储介质中存储有计算机执行指令，当所述计算机执行指令被执行时用于实现第一方面或第二方面任一项所述的方法。
第七方面，本申请实施例提供一种计算机程序产品，包括计算机程序，该计算机程序被执行时实现第一方面或第二方面任一项所述的方法。
第八方面，本申请实施例提供一种芯片，所述芯片上存储有计算机程序，所述计算机程序被所述芯片执行时，实现如第一方面或第二方面任一项所述的方法。
第九方面，本申请实施例提供一种芯片模组，所述芯片模组上存储有计算机程序，所述计算机程序被所述芯片执行时，实现如第一方面或第二方面任一项所述的方法。
本申请实施例提供的唤醒信号处理方法、装置以及设备，网络设备将第一唤醒信号采用低速率调制方式进行调制，得到低速率唤醒信号；将低速率唤醒信号与OFDM信号进行叠加，得到叠加信号；向终端设备发送叠加信号。这样，由于低速率唤醒信号与OFDM信号的速率差异大，终端设备可以使用功耗较低的解调方式对叠加信号进行解调，降低了终端设备的功耗；同时在低功耗的基础上，终端设备可以更加频繁地检测唤醒信号，可以实现实时接收唤醒信号，进而能够实现终端设备的快速唤醒，满足了时延敏感类业务的需求。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的实施例。
图1为本申请实施例提供的应用场景示意图；
图2为本申请实施例提供的网络架构示意图；
图3为一种5G早期网络寻呼的示意图；
图4为一种基于DCI的PEI示意图；
图5为一种寻呼组分组的示意图；
图6为本申请实施例提供的一种唤醒信号处理方法的流程示意图；
图7为本申请实施例提供的反向不归零编码的示意图；
图8为本申请实施例提供的一种曼彻斯特编码的示意图；
图9为本申请实施例提供的一种单极性归零编码的示意图；
图10为本申请实施例提供的一种差动双相编码的示意图；
图11为本申请实施例提供的一种密勒编码的示意图；
图12为本申请实施例提供的一种脉冲-间歇编码的示意图；
图13为本申请实施例提供的一种脉冲位置编码的示意图；
图14为本申请实施例提供的一种双相间隔码编码的示意图；
图15为本申请实施例提供的一种脉冲宽度编码的示意图；
图16为一种OOK调制的信号波形示意图；
图17为一种幅移键控ASK调制的信号波形示意图；
图18为本申请实施例提供的又一种唤醒信号处理方法的流程示意图；
图19为本申请实施例提供的再一种唤醒信号处理方法的流程示意图；
图20为本申请实施例提供的一种唤醒信号处理装置的结构示意图；
图21为本申请实施例提供的另一种唤醒信号处理装置的结构示意图；
图22为本申请实施例提供的一种唤醒信号处理设备的结构示意图。
具体实施方式
为使本领域技术人员更好地理解本申请的技术方案，下面结合附图和实施例对本申请作进一步详细描述。应当理解的是，此处描述的具体实施例和附图仅仅用于解释本申请，而并非对本申请的限定。
图1为本申请实施例提供的应用场景示意图。请参见图1，包括网络设备101和终端设备102，二者通过无线网络进行通信。
网络设备101可以是任意一种具有无线收发功能的设备。该网络设备设备包括但不限于：各种基站(宏站、微站、杆站或者中继器(repeater，RP)等)、演进型节点B(evolved Node B，eNB)、无线网络控制器(radio network controller，RNC)、节点B(Node B， NB)、基站控制器(base station controller，BSC)、基站收发台(base transceiver station，BTS)、家庭基站(例如，home evolved NodeB，或home Node B，HNB)、基带单元(baseband unit，BBU)，无线保真(wireless fidelity，WiFi)系统中的接入点(access point，AP)、无线中继节点、无线回传节点、传输点(transmission point，TP)或者发送接收点(transmission and reception point，TRP)等，还可以为5G，如，NR系统中的gNB，或，传输点(TRP或TP)，5G系统中的基站的一个或一组(包括多个天线面板)天线面板，或者，还可以为构成gNB或传输点的网络节点，如基带单元(BBU)，或，分布式单元(distributed unit，DU)等。
在一些部署中，gNB可以包括集中式单元(centralized unit，CU)和DU。gNB还可以包括有源天线单元(active antenna unit，AAU)。CU实现gNB的部分功能，DU实现gNB的部分功能。比如，CU负责处理非实时协议和服务，实现无线资源控制(radio resource control，RRC)，分组数据汇聚层协议(packet data convergence protocol，PDCP)层的功能。DU负责处理物理层协议和实时服务，实现无线链路控制(radio link control，RLC)层、介质接入控制(medium access control，MAC)层和物理(physical，PHY)层的功能。AAU实现部分物理层处理功能、射频处理及有源天线的相关功能。由于RRC层的信息最终会变成PHY层的信息，或者，由PHY层的信息转变而来，因而，在这种架构下，高层信令，如RRC层信令，也可以认为是由DU发送的，或者，由DU+AAU发送的。可以理解的是，网络设备可以为包括CU节点、DU节点、AAU节点中一项或多项的设备。此外，可以将CU划分为接入网(radio access network，RAN)中的网络设备，也可以将CU划分为核心网(core network，CN)中的网络设备。本申请实施例对于网络设备101的具体种类或者名称也不做限定。
其中，终端设备102也可以称为用户设备(user equipment，UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置等。终端设备101具体可以是一种向用户提供语音/数据连通性的设备，例如，具有无线连接功能的手持式设备、车载设备等。具体可以为：手机(mobile phone)、平板电脑(pad)、带无线收发功能的电脑(如笔记本电脑、掌上电脑等)、移动互联网设备(mobile internet device，MID)、虚拟现实(virtual reality，VR)设备、增强现实(augmented reality，AR)设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端、蜂窝电话、无绳电话、会话启动协 议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备，5G网络中的终端设备或者未来演进的公用陆地移动通信网络(public land mobile network，PLMN)中的终端设备等。
其中，可穿戴设备也可以称为穿戴式智能设备，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称，如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备，更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能，例如：智能手表或智能眼镜等，以及只专注于某一类应用功能，需要和其它设备如智能手机配合使用，如各类进行体征监测的智能手环、智能首饰等。
此外，终端设备102还可以是物联网(Internet of things，IoT)系统中的终端设备。IoT是未来信息技术发展的重要组成部分，其主要技术特点是将物品通过通信技术与网络连接，从而实现人机互连，物物互连的智能化网络。IoT技术可以通过例如窄带(narrow band)NB技术，做到海量连接，深度覆盖，终端省电。
此外，终端设备102还可以包括智能打印机、火车探测器、加油站等传感器，主要功能包括收集数据(部分终端设备)、接收网络设备的控制信息与下行数据，并发送电磁波，向网络设备传输上行数据。
当然，终端设备102也可以为芯片或者芯片模组等，本申请实施例对于终端设备102的具体种类或者名称不作限定。
图2为本申请实施例的网络架构图。如图2所示出的，5G的网络架构主要包括5G接入网(NG-RAN)和5G核心网(5GC)。5G无线接入网主要包括两种节点(基站)：gNB和ng-eNB。其中，gNB节点可以是向UE提供NR用户面和控制面协议终端的节点，并且经过NG接口连接到5GC。ng-eNB节点向UE提供E-UTRA用户面和控制面协议终端的节点，并且经过NG接口连接到5GC。gNB用于5G的独立组网，ng-eNB是则用于向下兼容4G网络。Xn接口为NG-RAN中节点之间的网络接口。5G网络还包括核心单元，具体包括接入和移动管理功能(Access and Mobility Management Function，AMF)，以及用户面功能(User Plane Function，UPF)。其中，AMF负责用户的接入和移动性管理，UPF负责用户面处理。
5G系统是针对移动电话和垂直用例而设计和开发的。除了延迟、可靠性和可用性之 外，UE能效对5G也至关重要。目前，5G设备可能需要每周或每天充电一次，具体取决于个人的使用时间。一般来说，5G设备在RRC空闲或者非活动状态下消耗数十毫瓦，在RRC连接状态下消耗数百毫瓦。延长电池寿命的设计是提高能源效率和改善用户体验的必要条件。对于没有连续能源的UE，例如使用小型可充电电池和单个纽扣电池的UE，能源效率甚至更为关键。在垂直用例中，传感器和执行器被广泛用于监控、测量、充电等。通常，它们的电池是不可充电的，预计至少可以使用几年，如TR 38.875标准中所描述的。此外，可穿戴设备使用典型的电池容量，根据需要维持长达1-2周是一项挑战，该可穿戴设备可以包括智能手表、戒指、电子健康相关设备和医疗监控设备等。
当终端设备102处于RRC空闲态或者RRC非激活态时，终端设备仍需要在寻呼时机PO内被唤醒并监听寻呼消息。但是，在寻呼时机PO内，并非所有的终端设备均被寻呼，对于未被寻呼的终端设备而言，频繁被唤醒并监听寻呼消息，造成了终端设备的功率的无故消耗，导致终端设备电池快速衰耗。为了实现终端设备节能的目的，3GPP R17引入了寻呼早指示PEI功能，以解决在早期R15等标准中存在的高错误寻呼或很少寻呼导致终端设备功率损耗较大的问题。
示例性地，图3示出了一种5G早期网络寻呼的示意图。如图3所示出的，5G核心网(5GC)正常寻呼(图3中实线)区域1中的终端设备，但是同时也误寻呼(图3中虚线)了区域2中的终端设备。可见，5G早期寻呼的错误率较高，造成终端设备的功耗较大。
R17中引入的寻呼早指示是终端设备在寻呼时机PO之前被通知终端设备是否必须监视寻呼信道，如终端设备不需要监视寻呼信道，则可以跳过PO之前的时频同步，也不需要被唤醒。PEI可以通过物理下行链路控制信道中承载的下行链路控制信息(Downlink Control Information，DCI)或通过参考信号通知终端设备。并且，PEI可以携带子分组信息(Sub-grouping)将共享相同寻呼时机的终端设备划分为子组，从而避免低组寻呼率和更少错误寻呼告警。
PEI作为对传统寻呼的增强功能，有助于节省在解码虚假寻呼消息时消耗的UE功率；与R15等早期标准的基本寻呼过程相比，通过PEI可节省UE17％-34％的能量，具体节省能量值取决于UE的信噪比(Signal to Interference plus Noise Ratio，SINR)等无线条件。并且，如果PEI有补充子组信息，则可额外节省10％的能量，同时还可以减轻高组寻呼率的影响；系统信息SIB(System Information Block，SIB)中SIB1类型可通过PEI-config IE信元通知终端设备有关PEI配置。
在PEI功能中，基于DCI的PEI可灵活地包含子组指示，并可能还包含短消息和其他信息，因此DCI被选为首选。PEI意味着有限大小的DCI搜索空间或序列，在每个寻呼机 会之前从基站(gNB)传输。
图4示出了一种基于DCI的PEI示意图。结合图4，处于空闲态或者非激活态的终端设备监视PEI的搜索空间，并且在检测到当前PEI指示时终端设备监视下一个PO；否则，终端设备进入深度睡眠并跳过监测PO。与实际寻呼物理下行控制信道(Physical Downlink Control Channel，PDCCH)相比，可实现功率节省增益主要是由于PEI搜索空间更有限。因此，对于未被寻呼的终端设备，PEI可减少不需要在PO内解码的数量，即减少寻呼错误警报。
此外，图5示出了一种寻呼组分组的示意图。结合图5，在R17中也可以为特定的空闲/非活动终端设备组定义PEI DCI或序列。具体的，处于空闲态或者非激活态的终端设备通过几个引入的分组方式被分组在几个寻呼组(分组A、分组B、分组C)中，并且PEI DCI以组特定的方式加扰。因此，当空闲态或者非激活态的终端设备在使用其自己的寻呼组扰码解码PEI DCI后计算错误的循环冗余校验(CRC)时，它假设传输的PEI用于一个或多个其他寻呼组，会跳过PO从而进一步减少寻呼误报。
由此可见，3GPP在R17标准中引入的PEI功能，一定程度上能够降低终端设备在空闲态或者非激活态的功耗，实现了节能的目的。但是终端设备对于PEI的接收也是周期性的，导致终端设备的唤醒存在时延的问题，对有些时延敏感且能耗敏感的业务无法满足需求。例如，在火灾探测和灭火用例中，在传感器检测到火灾后的1到2秒内，执行器应关闭防火卷帘并打开消防喷淋头，较长的唤醒周期无法满足时延要求。因此，相关技术中的针对终端设备的唤醒方式，无法在降低功耗的同时满足时延要求。在R18标准(Release 18)亟需一种支持低延迟的超低功耗机制，例如低于非连接态非连续性接收(IDLE DRX，eDRX)延迟。
在本申请实施例中，网络设备将第一唤醒信号采用低速率调制方式进行调制，得到低速率唤醒信号；将低速率唤醒信号与OFDM信号进行叠加，得到叠加信号；向终端设备发送叠加信号。这样，由于低速率唤醒信号与OFDM信号的速率差异大，终端设备可以使用功耗较低的解调方式对叠加信号进行解调，降低了终端设备的功耗；同时在低功耗的基础上，终端设备可以更加频繁地检测唤醒信号，可以实现实时接收唤醒信号，进而能够实现终端设备的快速唤醒，满足了时延敏感类业务的需求。
下面，通过具体实施例对本申请所示的方案进行详细说明。需要说明的是，下面几个实施例可以独立存在，也可以相互结合，对于相同或相似的内容，在不同的实施例中不再重复说明。
下面，结合图6所示的实施例，对唤醒信号处理的过程进行说明。
图6为本申请实施例提供的一种唤醒信号处理方法的流程示意图。请参见图6，该方法可以包括：
S601、将第一唤醒信号采用低速率调制方式进行调制，得到低速率唤醒信号。
本申请实施例中，第一唤醒信号可以是指网络设备向终端设备发送的、用于唤醒终端设备的信号。该第一唤醒信号可以用LP-WUS信号(Low-Power Wake-Up Signal)表示，与低功耗唤醒信号接收机(Low-Power Wake-Up Receiver，LP-WUR)相对应。当然，第一唤醒信号也可以为其他名称或者其他简写来表示，本申请实施例对此不作限定。低速率调制方式可以是指能够将第一唤醒信号调制为低速率信号的调制方式，具体可以为通断键控(On-Off Keying，OOK)调制、脉冲调制或者基于特定函数的调制等，本申请实施例对此亦不作限定。低速率唤醒信号可以是指调制后的低速率信号。
S602、将低速率唤醒信号与OFDM信号进行叠加，得到叠加信号。
本申请实施例中，OFDM信号可以是指5G系统中的多载波传输信号，基于正交频分复用技术(Orthogonal Frequency Division Multiplexing，OFDM)实现。OFDM信号是5G NR中应用广泛的一种高速率、多载波传输信号，能够实现高速串行数据的并行传输,具有较好的抗多径衰落的能力，能够支持多用户接入。
网络设备可以将低速率唤醒信号与OFDM信号进行叠加融合，即将低速率唤醒信号调制到OFDM信号中，得到叠加信号。需要说明的是，在网络设备需要向终端设备发送数据时，OFDM信号可以为已调数据符号的时域波形；在网络设备不需要发送数据时，OFDM信号也可以为未调数据符号的时域波形，具体可以基于网络设备的实际需求进行信号的叠加，本申请实施例对此不作限定。
S603、发送叠加信号。
本申请实施例中，网络设备可以向终端设备发送叠加信号。由于低速率唤醒信号与OFDM信号的速率差异较大，终端设备可以基于叠加信号，快速解调出第一唤醒信号，进而确定出终端设备自身是否需要被唤醒，在降低终端设备功耗的基础上降低了唤醒的时延。
本申请实施例提供的唤醒信号处理方法，网络设备将第一唤醒信号采用低速率调制方式进行调制，得到低速率唤醒信号；将低速率唤醒信号与OFDM信号进行叠加，得到叠加信号；向终端设备发送叠加信号。这样，由于低速率唤醒信号与OFDM信号的速率差异大，终端设备基于叠加信号可以快速解调出两种信号，降低了终端设备的功耗；同时在低功耗的基础上，终端设备可以一直处于检测唤醒信号的状态下，实时接收唤醒信号，能够实现终端设备的快速唤醒，满足了时延敏感类业务的需求。
在一种可能的实施方式中，第一唤醒信号包括一个比特指示；或者，
第一唤醒信号包括一个比特指示和标识；该标识包括终端设备标识、终端设备所属分组标识中的至少一种。
本申请实施例中，一个比特指示也可以称为单比特(bit)指示。该一个比特指示可以用于指示终端设备是否需要被唤醒，例如一个比特指示为数值1可以表示唤醒终端设备，一个比特指示为数值0可以表示无需唤醒终端设备，具体数值以及对应含义可以基于实际需求设置，本申请实施例对此不作限制。一个比特指示的形式较为简洁，第一唤醒信号的长度也较短，但是携带的内容有限。若仅基于一个比特指示生成的第一唤醒信号，终端设备可能无法确定自身是否需要执行该单比特指示，此时可能需要结合其他信号来确定一个比特指示对应的标识等信息。
本申请实施例中，第一唤醒信号还可以根据一个比特指示和标识生成，该标识具体可以为终端设备标识UE ID或者终端设备所属分组标识Group ID。相应的，第一唤醒信号具体可以为一个比特指示与终端设备标识、一个比特指示与终端设备所属分组标识、一个比特指示与终端设备标识以及终端设备所属分组标识等形式。这样，第一唤醒信号的长度增大，携带的内容增多；基于第一唤醒信号，终端设备可以快速确定自身是否需要执行该第一唤醒信号，确保了信号发送和执行的准确度。
在一种可能的实施方式中，第一唤醒信号为经过简单编码后得到的信号。
在一种可能的实施方式中，简单编码包括以下任意一种：
反向不归零编码、曼彻斯特编码、单极性归零编码、差动双相编码、密勒编码、修正密勒码编码、脉冲-间歇编码、脉冲位置编码、双相间隔码编码、脉冲宽度编码。
本申请实施例中，第一唤醒信号可以是初始唤醒信号经过简单编码后得到的信号；或者，网络设备可以是先将第一唤醒信号进行简单编码，之后再采用低速率调制方式进行调制。通过对唤醒信号进行简单编码，能够增加编码增益，提升性能。简单编码方式可以为以下(一)至(十)中的任意一种，当然也可以采用除下述编码方式以外的其他编码方式，本申请实施例对此不作限定。以下对各种简单编码方式进行介绍：
(一)、反向不归零编码(Non Return Zero，NRZ)。图7示出了本申请实施例的一种反向不归零编码的示意图。如图7所示出的，反向不归零编码用高电平表示二进制“1”，低电平表示二进制“0”。反向不归零编码不宜传输，主要存在以下原因：有直流，一般信道难于传输零频附近的频率分量；接收端判决门限与信号功率有关，不方便使用；不能直接用来提取位同步信号，因为NRZ中不含有位同步信号频率成分；要求传输线有一根接地。本申请实施例中采用反向不归零编码对唤醒信号进行简单编码，能够增加编码增益，提升性能。
(二)、曼彻斯特编码(Manchester)。曼彻斯特编码也被称为分相编码(Split-Phase Coding)。图8示出了本申请实施例的一种曼彻斯特编码的示意图。如图8所示出的，某比特位的值是由该比特长度内半个比特周期时电平的变化(上升或下降)来表示的，在半个比特周期时的负跳变表示二进制“1”，半个比特周期时的正跳变表示二进制“0”。即，某位的值由半个位周期(50％)的电平变化(上升/下降)来表示。在半个位周期时的负跳变(即电平由1变为0)表示二进制“1”，正跳变表示二进制“0”。曼彻斯特编码具有如下特点：
特点一、曼彻斯特编码在采用负载波的负载调制或者反向散射调制时，有利于发现数据传输的错误。这是因为在比特长度内，“没有变化”的状态是不允许的。
特点二、当同时发送的数据位有不同值时，则接收的上升边和下降边互相抵消，导致在整个比特长度内是不间断的负载波信号，由于该状态不允许，所以接收端利用该错误就可以判定碰撞发生的具体位置。
特点三、曼彻斯特编码由于跳变都发生在每一个码元中间，接收端可以方便地利用它作为同步时钟。
(三)、单极性归零编码(Unipolar RZ)。图9示出了本申请实施例的一种单极性归零编码的示意图。如图9所示出的，当发码1时发出正电流，但正电流持续的时间短于一个码元的时间宽度，即发出一个窄脉冲；当发码0时，完全不发送电流。该单极性归零编码可用来提取位同步信号。
(四)、差动双相编码(Differential Binary Phase，DBP)。图10示出了本申请实施例的一种差动双相编码的示意图。如图10所示出的，差动双相编码在半个比特周期中的任意的边沿表示二进制“0”，而没有边沿就是二进制“1”，如下图所示。此外在每个比特周期开始时，电平都要反相。因此，对于接收器来说，位节拍比较容易重建。
(五)、密勒编码(Miller)。图11示出了本申请实施例的一种密勒编码的示意图。如图11所示出的，密勒编码在半个比特周期内的任意边沿表示二进制“1”，而经过下一个比特周期中不变的电平表示二进制“0”。一连串的比特周期开始时产生电平交变，对于接收器来说，位节拍也比较容易重建。
以下表1为密勒编码的具体编码规则：
表1

如表1所示出的，对于原始符号“1”，用码元起始不跳变而中心点出现跳变来表示，即用10或01表示；对于原始符号“0”，则分成单个“0”还是连续“0”予以不同的处理，单个“0”时，保持“0”前的电平不变，即在码元边界处电平不跳变，在码元中间点电平也不跳变。对于连续两个“0”，则使连续两个“0”的边界处发生电平跳变。
(六)、修正密勒码编码。修正密勒码的编码规则为：每位数据中间有个窄脉冲表示“1”，数据中间没有窄脉冲表示“0”，当有连续的“0”时，从第二个“0”开始在数据的起始部分增加一个窄脉冲。起始位的开始处也有一个窄脉冲，而结束位用“0”表示。如果有两个连续的位开始和中间部分都没有窄脉冲，则表示无信息。
(七)、脉冲-间歇编码。图12示出了本申请实施例的一种脉冲-间歇编码的示意图。如图12所示出的，对于脉冲—间歇编码来说，在下一脉冲前的暂停持续时间t表示二进制“1”，而下一脉冲前的暂停持续时间2t则表示二进制“0”。示例性地，这种编码方法在电感耦合的射频系统中用于从读写器到电子标签的数据传输，由于脉冲转换时间很短，所以就可以在数据传输过程中保证从读写器的高频场中连续给射频标签供给能量。
(八)、脉冲位置编码(Pulse Position Modulation，PPM)。图13示出了本申请实施例的一种脉冲位置编码的示意图。如图13所示出的，脉冲位置编码与上述的脉冲间歇编码类似，不同的是，在脉冲位置编码中，每个数据比特的宽度是一致的。其中，脉冲在第一个时间段表示“00”，第二个时间段表示“01”，第三个时间段表示“10”，第四个时间段表示“11”。
(九)、双相间隔码编码(Bi-Phase Space，FM0)。图14示出了本申请实施例的一种双相间隔码编码的示意图。如图14所示出的，FM0编码的工作原理是在一个位窗内采用电平变化来表示逻辑。如果电平从位窗的起始处翻转，则表示逻辑“1”。如果电平除了在位窗的起始处翻转，还在位窗中间翻转则表示逻辑“0”。
(十)、脉冲宽度编码(Pulse interval encoding，PIE)。图15示出了本申请实施例的一种脉冲宽度编码的示意图。如图15所示出的，脉冲宽度编码的原理是通过定义脉冲下降沿之间的不同时间宽度来表示数据。数据帧由SOF(帧开始信号)、EOF(帧结束信号)、数据0和1组成。在基准时间间隔Tari间隔内，该时间段为相邻两个脉冲下降沿的时间宽度，持续为25μs。图15中(1)为脉冲宽度编码的规则，(2)为具体的脉冲示意图。
在一种可能的实施方式中，低速率调制方式包括通断键控OOK调制、脉冲调制以及 特定函数调制其中一种。
本申请实施例中，通断键控OOK调制可以将信号的一个幅度取为0，另一个幅度为非0。又叫做二进制幅移键控(amplitude shift keying，2ASK)，它是以单极性不归零码序列来控制正弦载波的开启与关闭。
示例性地，图16示出了一种OOK调制的信号波形示意图。如图16所示出的，Vm(t)是需要发送的数字信号，Acos(2πfct)是未经过调制的载波，VAM(t)是经过OOK调制的载波信号。
示例性地，图17示出了一种幅移键控ASK调制的信号波形示意图。如上图所示，载波经过调制之后可以有4个幅度(m＝4)，分别为V0＝00、V1＝01、V2＝10、V3＝11,每一个幅度可以代表2个bit位，这样它的传输速率就是OOK的2倍。
脉冲调制可以是指基于脉冲信号的调制方式，其振幅变化简单。特定函数调制则是指基于灵活设置的各种函数对信号进行调制。示例性地，以下公式(1)示出了一种特定函数的具体形式：
在上述公式(1)中，当n小于(？？+？？cp)/2，即n取值为0、1、2、…、(？？+？？cp)/2-1时，a(n)等于1；当n等于或者大于(？？+？？cp)/2时，a(n)等于0。x(n)为信号的输出值，B可以为单比特指示中的具体数值。具体计算逻辑如下：
当单比特指示bit为0时，当n小于(？？+？？cp)/2时，a(n)等于1，a(n-(N+NCP)/2)为0；当n等于或者大于(？？+？？cp)/2时，a(n)等于0，a(n-(N+NCP)/2)为1。这样，当单比特指示为0时，x(n)一直为1，不存在幅度转换的过程。
当单比特指示bit为1时，当n小于(？？+？？cp)/2时，a(n)等于1，a(n-(N+NCP)/2)为0，此时x(n)为1；当n等于或者大于(？？+？？cp)/2时，a(n)等于0，a(n-(N+NCP)/2)为1，此时x(n)为0。这样，当单比特指示为1时，x(n)在信号中间存在一个幅度转换的过程。
当然，特定函数也可以为其他形式，低速率调制方式也可以为除上述三种方式之外的其他调制方式，本申请实施例对此均不作限定。
本申请实施例中，通过低速率调制方式对第一唤醒信号进行调制，得到低速率唤醒信号。这样，后续终端设备在接收时，接收方式较为简单，根据波形的幅度即可完成判断，由低复杂度的接收机即可实现，能够进一步降低终端设备的能耗。
在一种可能的实施方式中，叠加信号是将低速率唤醒信号调制至至少一个符号上的OFDM信号得到的；低速率唤醒信号的时域波形宽度与至少一个符号相同；和/或，
叠加信号是将低速率唤醒信号与预配置频域资源的时域OFDM信号进行叠加得到的。
本申请实施例中OFDM的信号可以是指OFDM基带时域波形。在5G NR协议中，OFDM的时域波形为经过快速傅里叶逆变换(Inverse Fast Fourier Transform，IFFT)之后的信号。第一唤醒信号按照低速率调制方式调制之后，可以得到等幅的时域波形，即低速率唤醒信号，低速率唤醒信号的时域波形的波形宽度可以和至少一个符号相同。具体的，低速率唤醒信号可能有一个低速率调制符号，也可能有多个低速率调制符号。示例性地，当低速率唤醒信号有3个OOK调制符号时，假设分别为调制符号1、调制符号2、调制符号3，此时可以对应3个符号上的OFDM时域波形，假设分别为符号a、符号b、符号c，网络设备可以将调制符号1调制至符号a上的OFDM时域波形，将调制符号2调制至符号b上的OFDM时域波形，将调制符号3调制至符号c上的OFDM时域波形，实现信号的叠加。这样，可以直接将低速率唤醒信号加载到或者调制到至少一个符号上的OFDM信号上，实现低速率唤醒信号与OFDM信号的叠加，得到叠加信号。
具体的，在形成OFDM信号的时域波形时，基于3GPP协议中的内容，可以按照如下方式进行IFFT变换：





在上述公式(2)至(7)中，是OFDM信号现有的数据，ej2π所属部分则是用于计算频域上子载波的位置，k是子载波的位置，是起始点的位置。信号s的下标l指的是时域的符号；频域是k。子载波数量是k从0到上述IFFT变换的方程在已有3GPP协议中可以明确获取，本申请实施例在此不再展开描述。
需要强调的是，本申请实施例中，以低速率调制方式为OOK调制为例，低速率唤醒信号可以表示为Swus-ook(t)，OFDM的时域波形可以表示为Sl (p,u)(t)，该OFDM信号可以为已调数据符号的时域波形，这样能够在不影响网络设备原有数据发送的基础上发送低速率唤醒信号，提高数据发送的效率。当网络设备没有数据需要发送时，OFDM可以为不包 括其他数据的时域波形。在将低速率唤醒信号以及OFDM信号进行叠加之后，叠加信号可以表示为Swus-ook(t)+Sl (p,u)(t)，也可以表示为Swus-ook(t)*Sl (p,u)(t)或者Swus-ook(t)Sl (p,u)(t)等，本申请实施例对此不作限定。
需要说明的是，在时域上，低速率唤醒信号可以与OFDM信号的时域波形宽度相同，网络设备可以将低速率唤醒信号与OFDM信号进行叠加，得到叠加信号。而在频域上，网络设备可以将低速率唤醒信号与预配置(预定义)的一段频域资源的时域OFDM波形进行叠加，得到叠加信号。该预定义的一段频域资源的OFDM波形可以是指同步广播信号SSB的20个资源块(Resource Block，RB)的时域OFDM波形等，本申请实施例对于频域资源的时域OFDM波形具体形式不作限定。
以下介绍本申请实施例中的低速率唤醒信号与至少一个符号上的OFDM信号的几种具体叠加方式：
方式一，在一种可能的实施方式中，至少一个符号位于至少一个时隙内。
在终端设备与网络设备的无线交互通信过程中，无线帧(Frame)为无线网络的基本数据发送周期，子帧则为上下行子帧的分配单位。示例性的，一个无线帧的周期通常为10毫秒，一个子帧的周期则可以为1毫秒。进一步的，一个子帧可以包括多个时隙，该时隙可以是指数据调度和同步的最小单位，根据是否有循环前缀(Cyclic Prefix，CP)，一个时隙可以包括14或者12个符号。其中，符号(symbol)是调制的基本单位，可以基于子载波间隔(sub-carrier space，SCS)进行确定。由于5G NR提供了多种子载波间隔，5G的帧结构也更加灵活，时隙以及子帧等的具体周期也会存在多种情况，具体可以根据网络配置进行确定。
本申请实施例中，在将低速率唤醒信号与OFDM信号进行叠加时，可以在OFDM信号的时域波形的至少一个时隙内进行低速率唤醒信号的加载。即，网络设备可以将低速率唤醒信号调制到同一个时隙的至少一个符号中，也可以将低速率唤醒信号调制到多个时隙的几个符号上。
方式二，在一种可能的实施方式中，至少一个符号为包含同步广播信号SSB的符号；低速率唤醒信号承载于包括同步广播信号SSB的至少一个符号中。
本申请实施例中，同步广播信号(Synchronization Signal/PBCH，SSB)可以是指用于进行网络同步的信号。网络设备可以向终端设备发送的同步广播信号SSB，以使得终端设备完成对于网络的同步。在至少一个符号为包含同步广播信号SSB的符号时，低速率唤醒信号可以在包含同步广播信号SSB的至少一个符号上承载。例如，SSB信号对应4个符号，低速率唤醒信号可以承载在这4个符号中的至少一个符号中。当然，低速率唤醒信号 也可以在同步广播信号SSB所在时隙的其他至少一个符号上承载，例如，在SSB所在时隙的最后两个符号上承载。本申请实施例对于低速率唤醒信号所在的具体符号数以及具体位置不作限定。
方式三，在一种可能的实施方式中，至少一个符号为包含系统信息SIB的符号；低速率唤醒信号承载于包括系统信息SIB的至少一个符号中。
本申请实施例中，系统信息SIB是网络设备广播的系统信息。类似的，在至少一个符号为包含系统信息SIB的符号时，低速率唤醒信号可以在包含系统信息SIB的至少一个符号上承载。低速率唤醒信号也可以在系统信息SIB所在时隙的其他至少一个符号上承载。本申请实施例对此亦不作限定。
本申请实施例中，在时域上，至少一个符号可以是包含有其他信号的符号，低速率唤醒信号可以承载在包含有其他信号的至少一个符号上。在频域上，可以将SSB、SIB等信号的频域资源的时域OFDM波形与低速率唤醒信号进行叠加，得到叠加信号。这样，能够在不影响网络设备正常发送数据的前提下，保证低速率唤醒信号的正常发送，实现资源的复用，同时也能够降低终端设备的功耗。
以下介绍本申请实施例中的叠加信号中存在低速率唤醒信号的指示方式：
在一种可能的实施方式中，低速率唤醒信号是否存在由系统信息SIB、下行链路控制信息DCI、RRC或者MAC-CE指示。
本申请实施例中，针对叠加信号，网络设备需要通过特定的指示告知终端设备接收到的叠加信号中包括有低速率唤醒信号，也即指示LP-WUS信号的存在。R18中可以通过系统信息SIB、下行链路控制信息DCI、无线资源控制RRC或者媒体接入控制-控制实体(Media Access Control-Control Entity，MAC-CE)来指示LP-WUS的存在，具体可以采用1bit指示等，本申请实施例对于具体指示方式不作限定。
具体的，网络设备可以通过系统信息SIB中的信元来指示低速率唤醒信号是否存在。当SIB中的信元指示为真(true)时，表明终端设备此时接收到的信号存在低速率唤醒信号的叠加，即存在LP-WUS信号。网络设备也可以通过RRC信令或者MAC-CE来指示叠加信号中存在LP-WUS信号。
本申请实施例中，网络设备还可以通过下行链路控制信息DCI来指示低速率唤醒信号是否存在。具体可以基于已有的DCI来指示，例如可以复用或者调整DCI中的具体某一个格式类型(format)来指示低速率唤醒信号，也可以配置一种新的DCI来实现对低速率唤醒信号的指示。以使用DCI format 2-1为例，具体可以有以下两种指示方式：
方式一、在一种可能的实施方式中，低速率唤醒信号是否存在由通过新的无线网络临 时标识符RNTI进行加扰之后的下行链路控制信息DCI format 2-1指示。
本申请实施例中，无线网络临时标识符(Radio Network Temporary Identity，RNTI)可以用于区分终端设备的标识。加扰可以是指用一个伪随机码序列与原有信号进行相乘，对信号进行加密。在3GPP原有标准和协议，R17之前的用户是基于其原有的RNTI解扰以实现其原有功能。本申请实施例中，可以配置一个新的RNTI，用来指示低速率唤醒信号是否存在，网络设备基于该新的RNTI对DCI format 2-1进行加扰，终端设备则基于新的RNTI对DCI format 2-1进行解扰，进而实现对LP-WUS的精确指示。
方式二、在一种可能的实施方式中，低速率唤醒信号是否存在由下行链路控制信息DCI format 2-1新增加的至少一个比特位指示。
本申请实施例中，网络设备可以在原有的DCI format 2-1的基础上，增加至少一个比特位，来指示低速率唤醒信号是否存在。例如，以在DCI format 2-1中增加1bit为例，可以用数值1表示抢占指示，用数值0表示存在LP-WUS信号。当然也可以增加多个比特位来携带更多信息，本申请实施例对此不作限定。
网络设备在使用SIB信元、DCI、RRC或者MAC-CE指示低速率唤醒信号是否存在时，低速率唤醒信号可以是承载在特定信号所在的符号上。这样，终端设备在确定出存在低速率唤醒信号后，可以快速定位低速率唤醒信号所在的至少一个符号。
示例性地，低速率唤醒信号可以是在SSB的所在时隙的最后两个符号上进行承载，此时终端设备在基于SIB信元、DCI、RRC或者MAC-CE确定出存在低速率唤醒信号后，可以快速确定低速率唤醒信号所在的这两个符号，后续可以进行解调或者补偿处理。低速率唤醒信号也可以是在SSB所在的符号上承载，低速率唤醒信号对应的至少一个符号可以与SSB所在的符号数相同，这样终端设备确定出存在低速率唤醒信号后，可以基于SSB所在的符号进行解调或者补偿处理。
此外，在一种可能的实施方式中，DCI还用于指示低速率唤醒信号对应的目标位置；目标位置为低速率唤醒信号在OFDM信号中所在的至少一个符号。
本申请实施例中，DCI也可以用于指示低速率唤醒信号所在的至少一个符号。例如，网络设备可以通过DCI format 2-1来指示目标位置，该DCI format 2-1在原有标准中是用于作抢占指示(pre-emption indication，PI)的，能够指示哪些符号被打孔即被抢占了，以使得终端设备在处理时跳过这些被抢占的符号。当然，网络设备也可以采用其他format的DCI来指示目标位置，本申请实施例对此不作限定。示例性地，网络设备可以通过SIB信元来指示低速率唤醒信号是否存在，当SIB信元指示为真(true)时，DCI format 2-1可以指示低速率唤醒信号所在的至少一个符号。这样，网络设备可以复用DCI的功能来指示低 速率唤醒信号所在的目标位置，以使得低速率唤醒信号与OFDM的叠加方式更加灵活，不再局限于将低速率唤醒信号承载至特定信号所在的符号上，能够满足更多实际场景的特殊需求。
在上述任意一个实施例的基础上，下面，结合图18所示的实施例，从终端设备的角度，对唤醒信号处理过程进行详细说明。
图18为本申请实施例提供的又一种唤醒信号处理的流程示意图。请参见图18，该方法可以包括：
S1801、接收叠加信号；叠加信号为低速率唤醒信号与OFDM信号叠加得到的；低速率唤醒信号为第一唤醒信号采用低速率调制方式进行调制得到的。
本申请实施例中，终端设备可以接收网络设备发送的叠加信号，后续可以将该叠加信号进行解调。
S1802、将叠加信号进行解调，得到第一唤醒信号。
本申请实施例中，由于叠加信号中低速率唤醒信号和OFDM信号的速率差异较大，终端设备可以解调得到两种信号。之后，终端设备可以基于第一唤醒信号，来确定是否需要被唤醒。
在图18所示的实施例中，终端设备接收网络设备发送的叠加信号；该叠加信号是网络设备将低速率唤醒信号与OFDM信号进行叠加得到的；低速率唤醒信号是网络设备将第一唤醒信号采用低速率调制方式进行调制得到的；将叠加信号进行解调，得到第一唤醒信号。由于低速率唤醒信号与OFDM信号的速率差异大，终端设备可以使用功耗较低的解调方式对叠加信号进行解调，降低了终端设备的功耗；同时在低功耗的基础上，终端设备可以更加频繁地检测唤醒信号，可以实现实时接收唤醒信号，进而能够实现终端设备的快速唤醒，满足了时延敏感类业务的需求。
在上述任意一个实施例的基础上，下面，结合图19所示的实施例，从终端设备的角度，对唤醒信号处理过程进行详细说明。
图19为本申请实施例提供的再一种唤醒信号处理的流程示意图。请参见图19，该方法可以包括：
S1901、接收叠加信号；叠加信号为低速率唤醒信号与OFDM信号叠加得到的；低速率唤醒信号为第一唤醒信号采用低速率调制方式进行调制得到的。
S1902、将叠加信号进行解调，得到第一唤醒信号。
在一种可能的实施方式中，在终端设备为省电终端设备的情况下，第一唤醒信号为省电终端设备通过简单接收机解调得到。
本申请实施例中，省电终端设备可以是指对能效要求较高的终端设备，例如传感器和执行器等。简单接收机可以是指低复杂度接收机，或者叫做低功耗接收机。该简单接收机可以采用更加简单的方式对叠加信号进行解调，功耗较低。由于低速率唤醒信号是由第一唤醒信号经过低速率调制方式进行调制的，简单接收机也不需要做IFFT变换，功耗较低，可以更加频繁地检测低速率唤醒信号，也可以一直处于检测状态，实现对唤醒信号的实时检测，快速唤醒终端设备，满足了时延敏感类业务的需求。
在一种可能的实施方式中，在终端设备为非省电终端设备的情况下，第一唤醒信号为非省电终端设备通过复杂接收机解调得到。
本申请实施例中，非省电终端设备可以是指对能效要求不高的终端设备，例如一些可充电的5G终端等。非省电终端设备可以采用常用接收机或者复杂接收机来解调OFDM信号，获取网络设备侧发送给当前终端设备的数据或者控制信息，实现数据的正常发送。
需要说明的是，省电终端设备和非省电终端设备可以为同一个终端设备，对应终端设备电量不足和电量充足的两种状态。在一个终端设备内，可以同时设置有简单接收机和复杂接收机，以满足终端设备在不同场景下的实际需求。
在一种可能的实施方式中，第一唤醒信号为非省电终端基于低速率唤醒信号是否存在的指示对叠加信号。
本申请实施例中，当OFDM信号包括有包含其他信号例如SSB或者SIB的符号时，此时再叠加低速率唤醒信号，可能会对原有的数据信号产生负面影响，例如可能会影响原有数据信号的幅度等。因此，非省电终端设备可以根据系统信息SIB信元、下行链路控制信息DCI、RRC或者MAC-CE指示来确定低速率唤醒信号是否存在，之后再进行相应的补偿处理。低速率唤醒信号具体的指示方式可以参照网络设备侧的描述，本申请实施例在此不再赘述。
S1903、在终端设备为非省电终端设备的情况下，消除第一唤醒信号，并基于叠加信号解调得到OFDM信号；或者，
基于叠加信号，通过复杂接收机解调得到OFDM信号，并基于低速率唤醒信号对OFDM信号进行幅度补偿。
本申请实施例中，对于非省电终端设备，在确定出低速率唤醒信号存在之后，非省电终端设备可以快速定位并解调出低速率唤醒信号中的第一唤醒信号，并消除此信号，以消除对OFDM中原有信号的影响，之后再解调OFDM信号，这样能够保证数据接收的有效性。非省电终端设备也可以根据低速率唤醒信号的幅值，将叠加信号除以低速率唤醒信号的幅值，以对OFDM信号进行幅度补偿，消除低速率唤醒信号对OFDM信号的影响。
示例性地，当OFDM信号包括包含有同步广播信号SSB的符号时，若低速率唤醒信号在包含有同步广播信号SSB的符号上承载，则非省电终端设备需要对SSB符号进行补偿处理。若低速率唤醒信号只在同步广播信号SSB所在时隙最后两个符号上承载，则非省电终端设备需要对该时隙内这两个符号上承载的信号进行补偿处理，以保证网络设备与终端设备之间原有数据的正常发送。
需要说明的，终端设备在接收到叠加信号之后，可以基于实际情况以及实际需求采用其他方式来对叠加信号进行解调，得到第一唤醒信号，本申请实施例对此不作限定。
图20为本申请实施例提供的一种唤醒信号处理装置的结构示意图。请参见图20，该唤醒信号处理装置200可以包括：
调制模块201，用于将第一唤醒信号采用低速率调制方式进行调制，得到低速率唤醒信号；
叠加模块202，用于将低速率唤醒信号与OFDM信号进行叠加，得到叠加信号；
发送模块203，用于发送叠加信号。
本申请实施例提供的唤醒信号处理装置200可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
在一种可能的实施方案中，叠加信号是将低速率唤醒信号调制至至少一个符号上的OFDM信号得到的；低速率唤醒信号的时域波形宽度与至少一个符号相同；和/或，
叠加信号是将低速率唤醒信号与预配置频域资源的时域OFDM信号进行叠加得到的。
在一种可能的实施方式中，至少一个符号位于至少一个时隙内。
在一种可能的实施方式中，至少一个符号为包含同步广播信号SSB的符号；低速率唤醒信号承载于包括同步广播信号SSB的至少一个符号中。
在一种可能的实施方式中，至少一个符号为包含系统信息SIB的符号；低速率唤醒信号承载于包括系统信息SIB的至少一个符号中。
在一种可能的实施方式中，低速率唤醒信号是否存在由系统信息SIB、下行链路控制信息DCI、RRC或者MAC-CE指示。
在一种可能的实施方式中，低速率唤醒信号是否存在由通过新的无线网络临时标识符RNTI进行加扰之后的DCI format 2-1指示。
在一种可能的实施方式中，低速率唤醒信号是否存在由DCI format 2-1新增加的至少一个比特位指示。
在一种可能的实施方式中，DCI还用于指示低速率唤醒信号对应的目标位置；目标位置为低速率唤醒信号在OFDM信号中所在的至少一个符号。
在一种可能的实施方式中，第一唤醒信号包括一个比特指示；或者，
第一唤醒信号包括一个比特指示和标识；标识包括终端设备标识、终端设备所属分组标识中的至少一种。
在一种可能的实施方式中，低速率调制方式包括通断键控OOK调制、脉冲调制以及特定函数调制其中一种。
在一种可能的实施方式中，第一唤醒信号为经过简单编码后得到的唤醒信号。
在一种可能的实施方式中，简单编码包括以下任意一种：
反向不归零编码、曼彻斯特编码、单极性归零编码、差动双相编码、密勒编码、修正密勒码编码、脉冲-间歇编码、脉冲位置编码、双相间隔码编码、脉冲宽度编码。
本申请实施例提供的唤醒信号处理装置200可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。唤醒信号处理装置200具体可以为芯片、芯片模组等，本申请实施例对此不作限定。
图21为本申请实施例提供的另一种唤醒信号处理装置的结构示意图。请参见图21，该唤醒信号处理装置210可以包括：
接收模块211，用于接收叠加信号；叠加信号为低速率唤醒信号与OFDM信号叠加得到的；低速率唤醒信号为第一唤醒信号采用低速率调制方式进行调制得到的；
解调模块212，用于将叠加信号进行解调，得到第一唤醒信号。
本申请实施例提供的唤醒信号处理装置210可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
本申请实施例提供的唤醒信号处理装置210可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。唤醒信号处理装置210具体可以为芯片、芯片模组等，本申请实施例对此不作限定。
图22为本申请实施例提供的一种唤醒信号处理设备的结构示意图。请参见图22，唤醒信号处理设备220可以包括：存储器221、处理器222。示例性地，存储器221、处理器222，各部分之间通过总线223相互连接。
存储器221用于存储程序指令；
处理器222用于执行该存储器所存储的程序指令，实现上述实施例所示的唤醒信号处理方法。
图22实施例所示的唤醒信号处理设备可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
本申请实施例提供一种计算机可读存储介质，计算机可读存储介质中存储有计算机执 行指令，当计算机执行指令被处理器执行时用于实现上述唤醒信号处理方法。
本申请实施例还可提供一种计算机程序产品，包括计算机程序，该计算机程序被处理器执行时，可实现上述唤醒信号处理方法。
本申请实施例提供一种芯片，该芯片上存储有计算机程序，当计算机程序被该芯片执行时，实现上述唤醒信号处理方法。
本申请实施例还提供一种芯片模组，该芯片模组上存储有计算机程序，当计算机程序被该芯片模组执行时，实现上述唤醒信号处理方法。
需要说明的是，本申请实施例中提及的处理器可以是中央处理器(central processing unit，CPU)，还可以是其他通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现成可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
应理解，本申请实施例中提及的存储器可以是易失性存储器或非易失性存储器,或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synch link DRAM，SLDRAM)和直接内存总线随机存取存储器(direct ram bus RAM，DR RAM)。需要说明的是，当处理器为通用处理器、DSP、ASIC、FPGA或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件时，存储器(存储模块)集成在处理器中。应注意,本文描述的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
本申请实施例是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理单元以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理单元执行的 指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
关于上述实施例中描述的各个装置、产品包含的各个模块/单元，其可以是软件模块/单元，也可以是硬件模块/单元，或者也可以部分是软件模块/单元，部分是硬件模块/单元。各个装置、产品可以应用于或者集成于芯片、芯片模组或终端中。示例性地，对于应用于或者集成于芯片的各个装置、产品，其包含的各个模块/芯片可以是都采用电路等硬件的方式实现，或者，至少部分模块/单元可以采用软件程序的方式实现，该软件程序运行于芯片内部集成的处理器，剩余的部分模块/单元可以采用电路等硬件方式实现。
显然，本领域的技术人员可以对本申请实施例进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请实施例的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。
在本申请中，术语“包括”及其变形可以指非限制性的包括；术语“或”及其变形可以指“和/或”。本申请中术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。本申请中，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。

Claims (20)

  1. 一种唤醒信号处理方法，其特征在于，包括：
    将第一唤醒信号采用低速率调制方式进行调制，得到低速率唤醒信号；
    将所述低速率唤醒信号与OFDM信号进行叠加，得到叠加信号；
    发送所述叠加信号。
  2. 根据权利要求1所述的方法，其特征在于，所述叠加信号是将所述低速率唤醒信号调制至至少一个符号上的OFDM信号得到的；所述低速率唤醒信号的时域波形宽度与所述至少一个符号相同；和/或，
    所述叠加信号是将所述低速率唤醒信号与预配置频域资源的时域OFDM信号进行叠加得到的。
  3. 根据权利要求2所述的方法，其特征在于，所述至少一个符号位于至少一个时隙内。
  4. 根据权利要求2所述的方法，其特征在于，所述至少一个符号为包含同步广播信号SSB的符号；所述低速率唤醒信号承载于包括所述同步广播信号SSB的至少一个符号中。
  5. 根据权利要求2所述的方法，其特征在于，所述至少一个符号为包含系统信息SIB的符号；所述低速率唤醒信号承载于包括所述系统信息SIB的至少一个符号中。
  6. 根据权利要求1至5任一项所述的方法，其特征在于，所述低速率唤醒信号是否存在由系统信息SIB、下行链路控制信息DCI、RRC或者MAC-CE指示。
  7. 根据权利要求6所述的方法，其特征在于，所述低速率唤醒信号是否存在由通过新的无线网络临时标识符RNTI进行加扰之后的DCI format 2-1指示。
  8. 根据权利要求6所述的方法，其特征在于，所述低速率唤醒信号是否存在由所述DCI format 2-1新增加的至少一个比特位指示。
  9. 根据权利要求6所述的方法，其特征在于，所述DCI还用于指示所述低速率唤醒信号对应的目标位置；所述目标位置为低速率唤醒信号在所述OFDM信号中所在的至少一个符号。
  10. 根据权利要求1至9任一项所述的方法，其特征在于，所述第一唤醒信号包括一个比特指示；或者，
    所述第一唤醒信号包括一个比特指示和标识；所述标识包括终端设备标识、终端设备所属分组标识中的至少一种。
  11. 根据权利要求1至10任一项所述的方法，其特征在于，所述低速率调制方式包括 通断键控OOK调制、脉冲调制以及特定函数调制其中一种。
  12. 根据权利要求1至11任一项所述的方法，其特征在于，所述第一唤醒信号为经过简单编码后得到的信号。
  13. 根据权利要求12所述的方法，其特征在于，所述简单编码包括以下任意一种：
    反向不归零编码、曼彻斯特编码、单极性归零编码、差动双相编码、密勒编码、修正密勒码编码、脉冲-间歇编码、脉冲位置编码、双相间隔码编码、脉冲宽度编码。
  14. 一种唤醒信号处理方法，其特征在于，包括：
    接收叠加信号；所述叠加信号为低速率唤醒信号与OFDM信号叠加得到的；所述低速率唤醒信号为第一唤醒信号采用低速率调制方式进行调制得到的；
    将所述叠加信号进行解调，得到所述第一唤醒信号。
  15. 一种唤醒信号处理装置，其特征在于，包括：
    调制模块，用于将第一唤醒信号采用低速率调制方式进行调制，得到低速率唤醒信号；
    叠加模块，用于将所述低速率唤醒信号与OFDM信号进行叠加，得到叠加信号；
    发送模块，用于发送所述叠加信号。
  16. 一种唤醒信号处理装置，其特征在于，包括：
    接收模块，用于接收叠加信号；所述叠加信号为低速率唤醒信号与OFDM信号叠加得到的；所述低速率唤醒信号为第一唤醒信号采用低速率调制方式进行调制得到的；
    解调模块，用于基于所述叠加信号，解调得到所述第一唤醒信号。
  17. 一种唤醒信号处理设备，其特征在于，包括：处理器、存储器；
    所述存储器存储计算机执行指令；
    所述处理器执行所述存储器存储的计算机执行指令，实现如权利要求1至14中任一项所述的方法。
  18. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质中存储有计算机执行指令，当所述计算机执行指令被执行时用于实现权利要求1至14中任一项所述的方法。
  19. 一种计算机程序产品，其特征在于，包括计算机程序，所述计算机程序被执行时实现权利要求1至14中任一项所述的方法。
  20. 一种芯片，其特征在于，所述芯片上存储有计算机程序，所述计算机程序被所述芯片执行时，实现如权利要求1至14中任一项所述的方法。
PCT/CN2023/112577 2022-08-11 2023-08-11 唤醒信号处理方法、装置以及设备 WO2024032772A1 (zh)

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