WO2023071864A1 - 发送信号的方法和装置 - Google Patents

发送信号的方法和装置 Download PDF

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Publication number
WO2023071864A1
WO2023071864A1 PCT/CN2022/125894 CN2022125894W WO2023071864A1 WO 2023071864 A1 WO2023071864 A1 WO 2023071864A1 CN 2022125894 W CN2022125894 W CN 2022125894W WO 2023071864 A1 WO2023071864 A1 WO 2023071864A1
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WO
WIPO (PCT)
Prior art keywords
signal
symbols
symbol
ofdm symbols
ofdm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2022/125894
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English (en)
French (fr)
Inventor
罗之虎
吴毅凌
金哲
曲韦霖
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to EP22885742.1A priority Critical patent/EP4412140A4/en
Publication of WO2023071864A1 publication Critical patent/WO2023071864A1/zh
Priority to US18/645,782 priority patent/US20240275532A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H04W56/0015—Synchronization between nodes one node acting as a reference for the others
    • 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, and, more specifically, to a method and device for sending a signal.
  • the reader sends a carrier wave to the tag, and the tag modulates and reflects the received carrier wave to transmit data to the reader. During this process, the tag does not generate a carrier wave, so the tag can be The RF front-end is reduced to a single transistor switch, reducing manufacturing costs.
  • RFID radio frequency identification
  • the Institute of Electrical and Electronics Engineers Institute of Electrical and Electronics Engineers (Institute of Electrical and Electronics Engineers, IEEE) 802.11ba wake-up radio (wake-up radio, WUR) active devices include primary connection radio (PCR) and companion radio (companion radio, CR), the main connection radio can also be called the main receiver, and the companion connection radio is also called the wake-up receiver (WuRx), the wake-up receiver monitors the wake-up frame sent by the access point (AP), If the wake-up receiver receives a wake-up frame, it triggers the PCR to transition from sleep mode to active mode, so the wake-up receiver can stay in sleep mode for a long time when no wake-up frame is received, which can reduce power consumption.
  • PCR primary connection radio
  • companion radio companion connection radio
  • the wake-up receiver monitors the wake-up frame sent by the access point (AP)
  • AP access point
  • the wake-up receiver If the wake-up receiver receives a wake-up frame, it triggers the PCR to transition
  • 5G 5th generation mobile communication technology
  • NR new radio
  • MTC machine-type communication
  • IoT Internet of things
  • the embodiment of the present application provides a signal sending method, which can introduce technologies similar to RFID and WUR into a communication system, and can save network resource overhead.
  • a method for sending a signal may be executed by the first device, or may also be executed by a component configured in the first device (such as a chip or a chip system, etc.), and the first device may be a network device or a terminal device. Not limited.
  • the method includes: the first device sends a first signal to the second device on N orthogonal frequency division multiplexing OFDM symbols, where the N OFDM symbols include N1 first symbols, where N is an integer greater than or equal to 1, N1 ⁇ N, the first device sends the second signal to the third device on at least one first symbol in the N1 first symbols.
  • the first device can use the downlink signal in the existing communication system to generate the first signal to be sent to the second device, and can use the resource element RE corresponding to the first symbol carrying the first signal to send the first signal to the third device.
  • the second signal of the device (different from the capability of the second device) can realize the introduction of technologies similar to RFID and WUR in the existing communication system, and can save network resource overhead.
  • the N OFDM symbols further include N2 second symbols, and at least one second symbol in the N2 second symbols carries the configuration of the first device to the third
  • the first device can configure some zero-power or lower-power signals than the first symbol on the second symbol, which can further save network resource overhead.
  • the first symbol is an ON symbol corresponding to on-off keying modulation or multi-carrier on-off keying modulation.
  • the second symbol is an OFF symbol corresponding to on-off keying modulation or multi-carrier on-off keying modulation.
  • the N1 first symbols have the same power.
  • the N OFDM symbols include at least 4 consecutive first symbols.
  • the 4 consecutive first symbols carry a synchronization signal and/or a broadcast signal.
  • the first device may carry the SSB on REs corresponding to four consecutive ON symbols, so as to reduce network resource overhead.
  • the number of OFDM symbols occupied by the preamble sequence of the first signal is an integer multiple of the number of OFDM symbols in a time slot.
  • the first device may carry the PDSCH on the REs corresponding to the ON symbols of the N OFDM symbols, so as to reduce network resource overhead.
  • the second signal includes at least one of the following: downlink control information; a physical downlink shared channel; a reference signal; a synchronization signal; and a broadcast signal.
  • the downlink control information is downlink control information that does not schedule data.
  • the first device before the first device sends the first signal to the second device on N OFDM symbols, the first device sends semi-static configuration signaling to the third device, And the first resource configured by the semi-static configuration signaling has been activated, the first resource includes the N OFDM symbols, and before the first device sends the first signal to the second device on the N OFDM symbols, the first device Send deactivation information to the third device, where the deactivation information is used to deactivate the first resource.
  • the first device in order to prevent the third device from mistaking the first signal as information scheduled by the first resource configured by the semi-static configuration signaling and affecting the receiving performance of the third device, the first device needs to transmit the first signal before the first signal is transmitted. Deactivate the first resource configured by the foregoing semi-static configuration signaling.
  • a method for sending a signal may be executed by the second device, or may also be executed by a component configured in the second device (such as a chip or a chip system, etc.), and the second device may be a terminal device, which is not limited in this application.
  • the second device receives the first signal from the first device on N orthogonal frequency division multiplexing OFDM symbols, the N OFDM symbols include N1 first symbols, at least one first symbol in the N1 first symbols
  • the upper bears the second signal sent by the first device to the third device, where N is an integer greater than or equal to 1, and N1 ⁇ N.
  • the first signal received by the second device can be generated based on the downlink signal in the existing communication system, and the resource element RE corresponding to the first symbol of the first signal can also be sent to the third device (with the second Devices with different capabilities) realize the introduction of technologies similar to RFID and WUR in the existing communication system, and can save network resource overhead.
  • the N OFDM symbols further include N2 second symbols, and at least one OFDM symbol in the N2 second symbols carries the configuration of the first device to the third device
  • some zero-power or lower-power signals than those of the first symbol may be configured on the second symbol, which can further save network resource overhead.
  • the first symbol is an ON symbol corresponding to on-off keying modulation or multi-carrier on-off keying modulation.
  • the second symbol is an OFF symbol corresponding to on-off keying modulation or multi-carrier on-off keying modulation.
  • the N1 first symbols have the same power.
  • the N OFDM symbols include at least 4 consecutive first symbols.
  • the 4 consecutive first symbols carry a synchronization signal and/or a broadcast signal.
  • the first device may carry the SSB on the REs corresponding to the above four consecutive ON symbols, so as to reduce the overhead of network resources.
  • the number of OFDM symbols occupied by the preamble sequence of the first signal is an integer multiple of the number of OFDM symbols in a time slot.
  • the first device may carry the PDSCH on the REs corresponding to the ON symbols of the N OFDM symbols, so as to reduce network resource overhead.
  • the second signal includes at least one of the following: downlink control information, a physical downlink shared channel, a reference signal, a synchronization signal, and a broadcast signal.
  • the downlink control information is downlink control information that does not schedule data.
  • a method for sending a signal may be executed by the first device, or may also be executed by a component configured in the first device (such as a chip or a chip system, etc.), and the first device may be a network device or a terminal device. Not limited.
  • the method includes: the first device sends a first signal to the second device on N orthogonal frequency division multiplexing OFDM symbols, where the N OFDM symbols include N1 first symbols, where N is an integer greater than or equal to 1, N1 ⁇ N.
  • technologies similar to RFID and WUR can be introduced into the existing communication system, so that the first device can use the resource element RE corresponding to the first symbol carrying the first signal to send to the third device (with the second device) different capabilities) of the second signal (for example, one or more of downlink control information, physical downlink shared channel, reference signal, synchronization signal, and broadcast signal), thereby improving spectrum efficiency.
  • the first device can configure some zero-power or lower-power signals than the first symbol on the second symbol, which can further improve spectrum efficiency.
  • the first symbol is an ON symbol corresponding to on-off keying modulation or multi-carrier on-off keying modulation.
  • the second symbol is an OFF symbol corresponding to on-off keying modulation or multi-carrier on-off keying modulation.
  • the N1 first symbols have the same power.
  • the N OFDM symbols include at least 4 consecutive first symbols.
  • the first device may carry SSBs on REs corresponding to four consecutive ON symbols, so as to improve spectrum efficiency.
  • the number of OFDM symbols occupied by the preamble sequence of the first signal is an integer multiple of the number of OFDM symbols in a time slot.
  • the first device may carry the PDSCH on the REs corresponding to the ON symbols of the N OFDM symbols, so as to reduce network resource overhead.
  • a method for sending a signal is provided.
  • the method may be executed by the second device, or may also be executed by a component configured in the second device (such as a chip or a chip system, etc.), and the second device is a terminal device, which is not limited in this application.
  • the method includes: the second device receives a first signal from the first device on N OFDM symbols, the N OFDM symbols include N1 first symbols, where N is an integer greater than or equal to 1 , N1 ⁇ N.
  • the second signal (for example, one or more items of downlink control information, physical downlink shared channel, reference signal, synchronization signal, and broadcast signal) improves spectrum efficiency.
  • some zero-power or lower-power signals than those of the first symbol can be configured on the second symbol, which can further improve spectral efficiency.
  • the first symbol is an ON symbol corresponding to on-off keying modulation or multi-carrier on-off keying modulation.
  • the second symbol is an OFF symbol corresponding to on-off keying modulation or multi-carrier on-off keying modulation.
  • the N1 first symbols have the same power.
  • the N OFDM symbols include at least 4 consecutive first symbols.
  • the SSB can be carried on REs corresponding to four consecutive ON symbols to improve spectrum efficiency.
  • the number of OFDM symbols occupied by the preamble sequence of the first signal is an integer multiple of the number of OFDM symbols in a time slot.
  • the REs corresponding to the ON symbols of the above N OFDM symbols can carry the PDSCH to improve spectrum efficiency.
  • a device for sending signals may be a first device, or may also be a component configured in the first device (such as a chip or a chip system, etc.), and the first device may be a network device or a terminal device, which is not limited in this application .
  • the device includes: a transceiver unit, configured to send a first signal to a second device on N orthogonal frequency division multiplexing OFDM symbols, where the N OFDM symbols include N1 first symbols, where N is greater than or An integer equal to 1, N1 ⁇ N, the transceiving unit is further configured to send a second signal to the third device on at least one first symbol in the N1 first symbols.
  • the first device can use the downlink signal in the existing communication system to generate the first signal to be sent to the second device, and can use the resource element RE corresponding to the first symbol carrying the first signal to send the first signal to the third device.
  • the second signal of the device (different from the capability of the second device) can realize the introduction of technologies similar to RFID and WUR in the existing communication system, and can save network resource overhead.
  • the N1 first symbols have the same power.
  • the first symbol is an ON symbol corresponding to on-off keying modulation or multi-carrier on-off keying modulation.
  • the second symbol is an OFF symbol corresponding to on-off keying modulation or multi-carrier on-off keying modulation.
  • the N OFDM symbols include at least 4 consecutive first symbols.
  • the 4 consecutive first symbols carry a synchronization signal and/or a broadcast signal.
  • the number of OFDM symbols occupied by the preamble sequence of the first signal is an integer multiple of the number of OFDM symbols in a time slot.
  • the second signal includes at least one of the following: downlink control information; a physical downlink shared channel; a reference signal; a synchronization signal; and a broadcast signal.
  • the downlink control information is downlink control information that does not schedule data.
  • the transceiver unit has sent semi-static configuration signaling to the third device before sending the first signal to the second device on N OFDM symbols, and the The first resource configured by the semi-static configuration signaling has been activated, the first resource includes the N OFDM symbols, and the transceiver unit is further configured to transmit the first signal to the second device on the N OFDM symbols, to the third The device sends deactivation information, where the deactivation information is used to deactivate the first resource.
  • a device for sending signals may be a second device, or may also be a component configured in the second device (such as a chip or a chip system, etc.), and the second device may be a terminal device, which is not limited in this application.
  • the apparatus includes a transceiving unit, the transceiving unit is used to receive a first signal from a first device on N orthogonal frequency division multiplexing OFDM symbols, the N OFDM symbols include N1 first symbols, and the N1 first At least one first symbol among the symbols bears the second signal sent by the first device to the third device, where N is an integer greater than or equal to 1, and N1 ⁇ N.
  • the first signal received by the second device can be generated based on the downlink signal in the existing communication system, and the resource element RE corresponding to the first symbol of the first signal can also be sent to the third device (with the second Devices with different capabilities) realize the introduction of technologies similar to RFID and WUR in the existing communication system, and can save network resource overhead.
  • the N OFDM symbols further include N2 second symbols, and at least one OFDM symbol in the N2 second symbols carries the configuration of the first device to the third device
  • the N1 first symbols have the same power.
  • the first symbol is an ON symbol corresponding to on-off keying modulation or multi-carrier on-off keying modulation.
  • the second symbol is an OFF symbol corresponding to on-off keying modulation or multi-carrier on-off keying modulation.
  • the N OFDM symbols include at least 4 consecutive first symbols.
  • the 4 consecutive first symbols carry a synchronization signal and/or a broadcast signal.
  • the number of OFDM symbols occupied by the preamble sequence of the first signal is an integer multiple of the number of OFDM symbols in a time slot.
  • the second signal includes at least one of the following: downlink control information, a physical downlink shared channel, a reference signal, a synchronization signal, and a broadcast signal.
  • the downlink control information is downlink control information that does not schedule data.
  • a device for sending signals may be a first device, or may also be a component configured in the first device (such as a chip or a chip system, etc.), and the first device may be a network device or a terminal device, which is not limited in this application .
  • the device includes: a transceiver unit, configured to send a first signal to a second device on N orthogonal frequency division multiplexing OFDM symbols, where the N OFDM symbols include N1 first symbols, where N is greater than or Integer equal to 1, N1 ⁇ N.
  • technologies similar to RFID and WUR can be introduced into the existing communication system, so that the first device can use the resource element RE corresponding to the first symbol carrying the first signal to send to the third device (with the second device) Different capabilities) of the second signal (for example, one or more of downlink control information, physical downlink shared channel, reference signal, synchronization signal, and broadcast signal) to improve spectrum efficiency.
  • the first device can configure some zero-power or lower-power signals than the first symbol on the second symbol, which can further improve spectrum efficiency.
  • the first symbol is an ON symbol corresponding to on-off keying modulation or multi-carrier on-off keying modulation.
  • the second symbol is an OFF symbol corresponding to on-off keying modulation or multi-carrier on-off keying modulation.
  • the N1 first symbols have the same power.
  • the N OFDM symbols include at least 4 consecutive first symbols.
  • the number of OFDM symbols occupied by the preamble sequence of the first signal is an integer multiple of the number of OFDM symbols in a time slot.
  • a device for sending signals may be a second device, or may also be a component configured in the second device (such as a chip or a chip system, etc.), and the second device may be a terminal device, which is not limited in this application.
  • the apparatus includes a transceiving unit configured to receive a first signal from a first device on N orthogonal frequency division multiplexing OFDM symbols, the N OFDM symbols including N1 first symbols, wherein N is greater than or Integer equal to 1, N1 ⁇ N.
  • the second signal (for example, one or more items of downlink control information, physical downlink shared channel, reference signal, synchronization signal, and broadcast signal) improves spectrum efficiency.
  • some zero-power or lower-power signals than those of the first symbol can be configured on the second symbol, which can further improve spectral efficiency.
  • the first symbol is an ON symbol corresponding to on-off keying modulation or multi-carrier on-off keying modulation.
  • the second symbol is an OFF symbol corresponding to on-off keying modulation or multi-carrier on-off keying modulation.
  • the N1 first symbols have the same power.
  • the N OFDM symbols include at least 4 consecutive first symbols.
  • the number of OFDM symbols occupied by the preamble sequence of the first signal is an integer multiple of the number of OFDM symbols in a time slot.
  • a communication device the device includes a processor, the processor is coupled with a memory, and can be used to execute instructions in the memory, so as to realize the above-mentioned first aspect or the third aspect, or, the first aspect or the third aspect A method in any one of the possible implementations of the aspect.
  • the device further includes a memory, and the memory and the processor may be deployed separately or in a centralized manner.
  • the device further includes a communication interface, and the processor is coupled to the communication interface.
  • the communication interface may be a transceiver, or an input/output interface.
  • the apparatus is a chip configured in the first device.
  • the communication interface may be an input/output interface, interface circuit, output circuit, input circuit, pin or related circuit on the chip or chip system.
  • the processor may also be embodied as a processing circuit or logic circuit.
  • the transceiver may be a transceiver circuit.
  • the input/output interface may be an input/output circuit.
  • the above-mentioned processor can be one or more chips
  • the input circuit can be an input pin
  • the output circuit can be an output pin
  • the processing circuit can be a transistor, a gate circuit, a flip-flop and various logic circuits, etc. .
  • the input signal received by the input circuit may be received and input by the receiver, but the signal output by the output circuit may be but not limited to be output to the transmitter and transmitted by the transmitter, and the input circuit and the output circuit may be The same circuit, which is used as an input circuit and an output circuit at different times.
  • the embodiment of the present application does not limit the specific implementation manners of the processor and various circuits.
  • a communication device the device includes a processor, the processor is coupled with a memory, and can be used to execute instructions in the memory, so as to realize the above-mentioned second aspect or the fourth aspect, or, the second aspect or the fourth aspect A method in any one of the possible implementations of the aspect.
  • the device further includes a memory, and the memory and the processor may be deployed separately or in a centralized manner.
  • the device further includes a communication interface, and the processor is coupled to the communication interface.
  • the communication interface may be a transceiver, or an input/output interface.
  • the apparatus is a chip configured in the second device.
  • the communication interface may be an input/output interface, interface circuit, output circuit, input circuit, pin or related circuit on the chip or chip system.
  • the processor may also be embodied as a processing circuit or logic circuit.
  • the transceiver may be a transceiver circuit.
  • the input/output interface may be an input/output circuit.
  • the above-mentioned processor can be one or more chips
  • the input circuit can be an input pin
  • the output circuit can be an output pin
  • the processing circuit can be a transistor, a gate circuit, a flip-flop and various logic circuits, etc. .
  • the input signal received by the input circuit may be received and input by the receiver, but the signal output by the output circuit may be but not limited to be output to the transmitter and transmitted by the transmitter, and the input circuit and the output circuit may be The same circuit, which is used as an input circuit and an output circuit at different times.
  • the embodiment of the present application does not limit the specific implementation manners of the processor and various circuits.
  • a communication device in an eleventh aspect, includes a logic circuit, the logic circuit is used to couple with an input/output interface, and transmit data through the input/output interface, so as to perform the above-mentioned first to fourth aspects Any aspect, and the method in any possible implementation manner of the first aspect to the fourth aspect.
  • a computer-readable storage medium stores a computer program (also referred to as code, or instruction) when it is run on a computer, so that the computer executes the above-mentioned first aspect Any aspect from the fourth aspect to the fourth aspect, and a method in any possible implementation manner from the first aspect to the fourth aspect.
  • a computer program also referred to as code, or instruction
  • a computer program product includes: a computer program (which may also be referred to as code, or an instruction), when the computer program is executed, the computer executes the above-mentioned first to fourth aspects. Any one of the aspects, and the method in any possible implementation manner of the first aspect to the fourth aspect.
  • a communication system in a fourteenth aspect, includes the above-mentioned first device and the second device, and optionally, the communication system further includes a third device.
  • Fig. 1 is a schematic diagram of a communication system provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of the Passive IoT downlink communication method provided by this application.
  • FIG. 3 is a schematic diagram of the Passive IoT uplink communication method provided by this application.
  • FIG. 4 is an interactive flowchart of a method for sending a signal provided in an embodiment of the present application.
  • FIG. 5 is a schematic diagram when the transmitted second signal is DCI according to an embodiment of the present application.
  • FIG. 6 is a schematic diagram when the second signal sent is SSB according to an embodiment of the present application.
  • FIG. 7 is a schematic diagram when the transmitted second signal is the PDSCH provided by the embodiment of the present application.
  • FIG. 8 is a schematic diagram of resources configured by deactivating semi-static configuration signaling provided by an embodiment of the present application.
  • FIG. 9 is an interactive flowchart of another method for sending a signal provided by an embodiment of the present application.
  • Fig. 10 is a schematic block diagram of a communication device provided by an embodiment of the present application.
  • Fig. 11 is a schematic block diagram of another communication device provided by an embodiment of the present application.
  • Fig. 12 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 13 is a schematic structural diagram of another communication device provided by an embodiment of the present application.
  • Fig. 14 is a schematic structural diagram of another communication device provided by an embodiment of the present application.
  • Fig. 1 is a schematic diagram of a communication system provided by an embodiment of the present application.
  • the first device 10, the second device 11, and the third device 12 form a communication system. It should be understood that in FIG. 1, the first device 10, the second device 11, and the third device 12 The number is only an example, and the present application does not limit it.
  • signals can be transmitted between the first device 10 and the second device 11, signals can be transmitted between the first device 10 and the third device 12, and signals can also be transmitted between the second device 11 and the third device 12. Signal.
  • the first device 10 may be a network device or a terminal device, and the first device may be a low-capability terminal device or a high-capability terminal device.
  • the second device 11 is a low-capability terminal device, and the third device 12 is a high-capability terminal device.
  • the second device 11 is a terminal device that supports reflective communication (for example, supporting passive IoT communication)
  • the third device 12 is a terminal device that does not support reflective communication (for example, does not support passive IoT communication)
  • the second device 11 supports data
  • the third device 12 supports services with higher data transmission rate requirements.
  • the second device 11 is less complex or capable than the third device 12.
  • the second device 11 may be less complex than the third device 12 in terms of supported bandwidth, power consumption, number of antennas, etc., such as supporting Narrower bandwidth, lower power consumption, fewer antennas, etc.
  • the third device 12 may also be called an NR normal terminal device, or a legacy capability or/normal capability/high capability terminal device, and may also be called a legacy (legacy) terminal device.
  • the difference between the third device 12 and the second device 11 includes at least one of the following:
  • the maximum bandwidth supported by the third device may be greater than the maximum bandwidth supported by the second device.
  • the third device can support the use of 5MHz-100MHz frequency domain resources and network equipment on one carrier at the same time, and the second device can support the use of 180kHz or several 180kHz frequency domain resources and network equipment on one carrier at the same time. to communicate.
  • the number of transmitting and receiving antennas is different.
  • the antenna configuration of the third device may be larger than the antenna configuration of the second device.
  • the minimum antenna configuration supported by the third device may be greater than the maximum antenna configuration supported by the second device.
  • the third device 12 may support 4 receiving and 2 transmitting (4 receiving antennas and 2 transmitting antennas).
  • the second device may support 1 reception and 1 transmission (1 receiving antenna and 1 transmitting antenna). It can be understood that, under the condition of achieving the same data transmission rate, since the number of receiving and transmitting antennas of the second device is less than that of the third device, the data transmission between the second device and the network device can The achieved maximum coverage is smaller than the maximum coverage achievable by data transmission between the third device and the network device.
  • the maximum uplink transmit power is different.
  • the maximum uplink transmit power of the third device is greater than the maximum uplink transmit power of the second device.
  • the protocol version is different.
  • the third device may be a terminal device in NR release 15 (release-15, Rel-15) or NR release 16 (release-16, Rel-16) or NR release 17 (release-17, Rel-17).
  • the second device can be considered as a terminal device in NR version 18 (release-18, Rel-18) or a version after NR Rel-18.
  • Carrier aggregation (CA) capabilities are different.
  • the third device may support carrier aggregation, while the second device does not support carrier aggregation; for another example, both the second device and the third device support carrier aggregation, but the maximum number of cells supported by carrier aggregation at the same time by the third device is greater than that of the second device. The maximum number of cells supported by two devices for carrier aggregation at the same time.
  • FDD frequency division duplex
  • the data processing time capability is different, for example, the minimum delay between the third device receiving the downlink data and sending the feedback on the downlink data is smaller than the second device receiving the downlink data and sending the feedback on the downlink data. minimum delay. And/or, the minimum time delay between the third device sending the uplink data and receiving the feedback on the uplink data is smaller than the minimum time delay between the second device sending the uplink data and receiving the feedback on the uplink data.
  • the baseband processing capability of the third device is higher than the baseband processing capability of the second device.
  • the baseband processing capability may include at least one of the following: the maximum number of MIMO layers supported by the terminal device for data transmission, the number of HARQ processes supported by the terminal device, and the maximum transmission block size (transmission block size, TBS) supported by the terminal device.
  • the transmission peak rates of uplink and/or downlink are different.
  • the transmission peak rate refers to the maximum data transmission rate that a terminal device can achieve within a unit time (for example, per second).
  • the uplink peak rate supported by the third device may be higher than the uplink peak rate supported by the second device, and/or the downlink peak rate supported by the third device may be lower than the downlink peak rate supported by the second device.
  • the peak uplink rate of the third device is greater than or equal to 50 Mbps
  • the peak downlink rate is greater than or equal to 150 Mbps
  • the peak uplink rate of the second device is less than or equal to 50 Mbps
  • the peak downlink rate is less than or equal to 150 Mbps.
  • the peak uplink rate or downlink rate of the third device is on the order of hundreds of Mbps
  • the peak uplink rate or peak downlink rate of the second device is on the order of Gbps.
  • the buffer size is different.
  • the cache of the third device is larger than the cache of the second device.
  • the cache can be understood as the total size of the Layer 2 (Layer 2, L2) cache, which is defined as the bytes cached by the terminal device in the radio link control (radio link control, RLC) sending window and receiving and reordering window for all radio bearers The sum of the number and the number of bytes buffered in the packet data convergence protocol (PDCP) reordering window.
  • buffering can also be understood as the total number of soft channel bits that can be used by hybrid automatic repeat request (HARQ) processing.
  • HARQ hybrid automatic repeat request
  • the receiver architecture is different.
  • the receiver of the third device has a high-frequency crystal oscillator, which can locally generate a carrier wave and perform coherent demodulation.
  • the receiver of the second device does not have a high-frequency crystal oscillator, cannot generate a carrier locally, and can only perform non-coherent demodulation, such as envelope detection.
  • the third device can actively generate a high-frequency carrier, and the second device cannot generate a high-frequency carrier through uplink communication through reflection. It can only transmit data by receiving a downlink continuous carrier, modulating and reflecting the continuous carrier.
  • the power consumption of the receiver is different.
  • the receiving power corresponding to the third device is on the order of milliwatt (milliwatt, mW), and the receiving power corresponding to the second device is on the order of milliwatt (mW).
  • the modulation method supported by the third device is phase shift keying (phase shift keying, PSK) or quadrature amplitude modulation (quadrature amplitude modulation, QAM), and the modulation method supported by the second device is amplitude shift keying (amplifier shift keying, ASK) ) or frequency shift keying (frequency shift keying, FSK) or on-off keying (OOK).
  • the encoding method supported by the third device is polar code, or low density parity check (low density parity check, LDPC) code, or tail biting convolutional code (TBCC) code, turbo (turbo) yards, or Reed-Muller yards.
  • the encoding method supported by the second device is Manchester code, or Miller code, or FM0 (bi-phase space) code, or PIE (pulse interval encoding, pulse width code) code.
  • the second device 11 is a terminal device that supports WUR
  • the third device 12 is a terminal device that does not support WUR.
  • the difference between the second device 11 and the third device 12 does not include the uplink Relevant descriptions, other differences are the same, and will not be repeated here.
  • a terminal device in this application may also be referred to as a terminal, an access terminal, a user equipment, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent or user device.
  • the terminal in the embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (pad), a computer with a wireless transceiver function, a virtual reality (virtual reality, VR) terminal, an augmented reality (augmented reality, AR) terminal, an industrial Wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical, wireless terminals in smart grid, transportation safety Wireless terminals in smart cities, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop ( wireless local loop (WLL) station, personal digital assistant (personal digital assistant, PDA), handheld device with wireless communication function, computing device or other processing device connected to a wireless modem, vehicle-mounted device, wearable device, 5G network A terminal or a terminal in a future evolved network, etc.
  • a virtual reality virtual reality
  • AR augmented reality
  • industrial Wireless terminals in industrial control wireless terminals in self driving
  • wireless terminals in remote medical wireless terminals in smart grid
  • wearable devices can also be called wearable smart devices, which is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes.
  • 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 only a hardware device, but also achieve powerful functions through software support, data interaction, and cloud interaction.
  • Generalized wearable smart devices include full-featured, large-sized, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, etc., and only focus on a certain type of application functions, and need to cooperate with other devices such as smart phones Use, such as various smart bracelets and smart jewelry for physical sign monitoring.
  • the network device in this application may also be called a radio access network device (radio access network, RAN), which can manage wireless resources. It mainly provides wireless access services, schedules wireless resources to access terminal devices, provides reliable wireless transmission protocols and data encryption protocols, etc., and can complete the forwarding of terminal device data between terminal devices and the core network.
  • radio access network radio access network
  • the network device in the embodiment of the present application may be any communication device with wireless transceiver function for communicating with user equipment, it may be a network device deployed on a satellite, or it may be a network device deployed on the ground Internet equipment.
  • the network equipment includes but is not limited to: evolved node B (evolved Node B, eNB), radio network controller (radio network controller, RNC), node B (node B, NB), base station controller (base station controller, BSC) ), base transceiver station (base transceiver station, BTS), home base station (home evolved nodeB, HeNB, or home node B, HNB), baseband unit (baseband unit, BBU), wireless fidelity (wireless fidelity, WIFI) system Access point (access point, AP), wireless relay node, wireless backhaul node, transmission point (transmission point, TP) or transmission and reception point (transmission and reception point, TRP), etc., can also be 5G, such as NR A gNB in the system, or
  • a gNB may include a centralized unit (CU) and a DU.
  • the gNB may also include an active antenna unit (AAU).
  • the CU implements some functions of the gNB, and the DU implements some functions of the gNB.
  • the CU is responsible for processing non-real-time protocols and services, and realizing the functions of radio resource control (radio resource control, RRC) and packet data convergence protocol (packet data convergence protocol, PDCP) layer.
  • the DU is responsible for processing physical layer protocols and real-time services, realizing the functions of the radio link control (radio link control, RLC) layer, media access control (media access control, MAC) layer and physical (physical, PHY) layer.
  • the AAU implements some physical layer processing functions, radio frequency processing and related functions of active antennas.
  • the information of the RRC layer is generated by the CU, and will eventually be encapsulated by the PHY layer of the DU to become PHY layer information, or transformed from the information of the PHY layer. Therefore, under this architecture, high-level signaling such as RRC layer signaling can also be considered to be sent by the DU, or sent by the DU+AAU.
  • 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, and the CU can also be divided into network devices in the core network (core network, CN), which is not limited in this application.
  • GSM global system for mobile communications
  • CDMA code division multiple access
  • WCDMA wideband code division multiple access
  • GPRS general packet radio service
  • LTE LTE system
  • LTE advanced, LTE-A LTE frequency division duplex
  • FDD frequency division duplex
  • TDD time division duplex
  • UMTS universal mobile telecommunications system
  • WiMAX global interconnection microwave access
  • 5G system or future Evolved communication system vehicle to other equipment
  • V2X can include vehicle to Internet (vehicle to network, V2N), vehicle to vehicle (vehicle to vehicle, V2V), vehicle to infrastructure (vehicle to infrastructure, V2I), vehicles to
  • RFID technology is a non-contact automatic identification technology. It automatically identifies the target object and obtains relevant data through radio frequency signals, and the identification work does not require manual intervention.
  • the RFID system consists of a reader and a tag.
  • passive (batter free) RFID the reader charges the tag by sending an excitation signal to the tag, that is to say, the tag receives the microwave signal sent by the reader and excites the electromagnetic induction coil in the tag to obtain energy through the microwave signal. Drive the chip in the tag to work, and send data to the reader through the reflected signal.
  • the reader can identify the tag's identification (identification, ID), and perform operations such as reading and writing the tag. Thereby completing reading and writing data on the tag.
  • ID identification
  • the power module is omitted in passive RFID, the volume of passive RFID products can reach centimeters or even smaller, and its own structure is simple, low cost, low failure rate, and long service life.
  • the site equipment In a wireless communication system, most of the energy of the station equipment is wasted in channel monitoring, that is, when the station does not send and receive messages, if the station equipment continues to monitor the channel, a large amount of energy will be consumed. In order to reduce the waste of energy and prevent the site equipment from being in a dormant state for too long and cause slow operation, the site equipment must be able to operate in a state of low power consumption and low latency.
  • the WUR architecture came into being, and its core idea is: In addition to the traditional main transceiver module (mainradio, MR for short), the receiver device also adds a low-power wakeup receiver (WuRx) part.
  • the transceiver module is the 802.11 main radio (mainradio, MR). Because the power consumption of WuRx is several orders of magnitude lower than traditional low power consumption, WuRx can run all the time.
  • the MR in the second device enters a deep sleep, and the WuRx with low power consumption starts to work, and the WuRx is used to monitor the channel.
  • MR remains in deep sleep or off mode until WuRx wakes it up.
  • the first device when there is data to be transmitted between the first device and the second device, the first device first sends a wakeup packet (WuP for short) to WuRx, and after WuRx, which is always on, correctly receives the WuP sent to itself, Generating an interrupt to the MR's microcontroller switches it from sleep to active mode, thus achieving waking up the MR of the second device.
  • the MR's microcontroller then turns on the main transceiver to communicate with the first device in a conventional manner. When the communication between MR and the first device is completed, it will re-enter dormancy, and at the same time, wurx will start to listen to whether there is WuP sent to itself, so as to wake up MR again.
  • This technology uses low-power WuRx instead of the main transceiver module to listen to the channel, which effectively reduces the energy waste of the device when listening.
  • the information bit of the wake-up machine is modulated into an on-off keying (OOK) symbol
  • the OOK symbol includes an ON symbol and an OFF symbol, wherein the amplitude of the ON symbol is non-zero, and the amplitude of the OFF symbol is 0.
  • the transmitter device uses these OOK symbols to shield the generated narrowband orthogonal frequency division multiplexing (OFDM) waveform (that is, the OOK waveform), thereby further optimizing the OOK waveform.
  • the OOK symbols are carried on 13 subcarriers. In the local area network standard IEEE 802.11ba, it is called multicarrier (multicarrier, MC) OOK.
  • OOK demodulation does not require any channel equalization in the frequency domain and time domain, so the receiving end device listens by waking up the receiver for non-coherent detection (such as envelope detection). With non-coherent detection, the receiver device does not need to maintain/track the oscillation rate with high precision. Therefore, a phase-locked loop can be avoided, further reducing power consumption at the receiving side.
  • non-coherent detection such as envelope detection
  • IoT With the popularity of IoT, more and more IoT devices have been deployed in people's lives. For example: smart water meters, shared bicycles, and smart cities, environmental monitoring, smart homes, forest fire prevention and other devices aimed at sensing and data acquisition, etc.
  • IoT devices will be ubiquitous, and may be embedded in every piece of clothing, every package, and every key. Almost all offline items will be brought online under the empowerment of IoT technology.
  • the process of realizing the Internet of Everything has also brought a lot of challenges to the industry. The first is the problem of power supply.
  • IoT is still mainly driven by operators, and IoT modules need to communicate with base stations using standard cellular protocols.
  • the IoT module Since the base station needs to cover as large an area as possible, the IoT module needs to be able to communicate even when it is far away from the base station, which makes the IoT device still need to consume up to 30mA of current during wireless communication, so the current IoT module It is still necessary to use a higher-capacity battery to work, which also makes it difficult to reduce the size of the IoT module and increases the cost of the IoT device.
  • passive IoT passive IoT
  • Passive IoT passive IoT
  • the passive IoT will be the main one. It should be understood that this application does not limit the name.
  • Passive IoT is inspired by the current large and mature use of RFID technology, which is similar to the transmission mechanism of RFID.
  • Passive IoT devices can be passive, that is, Passive IoT devices are not equipped with themselves or do not mainly rely on batteries or wired power sources for power supply. However, the fact that Passive IoT devices do not have a power module does not mean that no electricity is required.
  • Passive IoT devices can obtain energy from ambient light, heat, and radio frequency, thereby supporting IoT data perception, wireless transmission, and distributed computing. wait.
  • Passive IoT devices can also be passive or semi-passive. Energy storage passive devices have energy storage devices.
  • the semi-passive device has a battery, but the battery power supply is only for the auxiliary support of the circuit in the tag that requires power to maintain data or the voltage required for the tag chip to work.
  • the tag circuit itself consumes little power to supply power, and the battery size is relatively small.
  • FIGS. 1 and Figure 3 show schematic diagrams of uplink and downlink communication methods in Passive IoT communication.
  • Figure 2 shows a schematic diagram of the Passive IoT downlink communication method.
  • the first device sends an AM signal to the second device through a downlink
  • the second device receives the AM signal, and may use an envelope detector to perform envelope detection on the AM signal to obtain a low-frequency signal therein.
  • the above-mentioned envelope detection refers to the process of demodulating the low-frequency signal from the AM signal.
  • the generalized detection is usually called demodulation, which is the inverse process of modulation, that is, the process of extracting the modulated signal from the modulated signal.
  • envelope detection is the process of extracting the modulating signal from its amplitude variation.
  • the envelope reflects the amplitude change curve of a high-frequency signal.
  • the main components of the envelope detector include the diode and RC oscillator circuit shown in Figure 2.
  • the common method of envelope detection is to use diodes for one-way filtering and then low-pass filtering.
  • the low-pass filter is the RC oscillator circuit shown in Figure 2.
  • the role of the diode is to prevent the positive and negative envelopes from canceling out during low-pass filtering, so that low-frequency signals cannot be detected.
  • the envelope detection circuit shown in FIG. 2 is a schematic diagram of the most traditional basic circuit structure, and the evolution structure of the envelope detection circuit will not be repeated here.
  • the embodiment of the present application does not limit the structure of the envelope detection circuit adopted by the second device.
  • Figure 3 shows a schematic diagram of the Passive IoT uplink communication method.
  • the second device is a Passive IoT device.
  • the passive IoT device is taken as a passive device as an example. Therefore, the second device itself cannot provide power, and it is unconditionally connected to a wired power source for the Passive IoT device to transmit data. Therefore, the second device needs to obtain energy from the external environment, and then provide Passive IoT devices for data transmission, data processing and other operations.
  • the second device when it receives the carrier signal sent by the first device, it can use the energy obtained from the electromagnetic field generated in the space to drive the chip to transmit the information stored by itself.
  • the relationship between the first device and the second device is the relationship of "electromagnetic backscatter coupling".
  • Electromagnetic backscatter coupling refers to the use of the spatial propagation law of electromagnetic waves.
  • the information carrying the measured object is reflected back. This coupling is suitable for long-distance radio frequency identification systems that work at high frequencies and microwaves.
  • the uplink communication method in the Passive IoT communication shown in Figure 3 is only an example, and the Passive IoT device can also drive the chip to transmit the information stored by itself by obtaining energy such as ambient light and heat.
  • the second device may also be an energy storage passive device or a semi-passive device.
  • IEEE 802.11ba wakes up multicarrier OOK (multicarrierOOK, MC-OOK) modulation.
  • OOK multicarrierOOK
  • MC-OOK multicarrierOOK
  • the subcarriers corresponding to OFDM symbols do not carry information.
  • the information bits may correspond to More coding bits, or, introduce bit repetition. A large number of ON symbols and OFF symbols will occupy more network resource overhead, and the subcarriers corresponding to OFDM symbols do not carry information, resulting in low spectrum efficiency. And there is currently no specific communication mechanism that can be implemented for Passive IoT communication.
  • Method 200 proposes a signal sending method 200, which generates a first signal through an existing signal in an existing NR system or an LTE system, so as to support Passive IoT in an NR system or an LTE system.
  • Method 200 includes:
  • Step S210 the first device sends a first signal to the second device, and the first signal is carried on N OFDM symbols, wherein the N OFDM symbols include N1 first symbols, and N is greater than or equal to Integer of 1, N1 ⁇ N. And, at least one first symbol among the N1 first symbols bears the second signal sent by the first device to the third device.
  • the second device receives the first signal
  • the third device receives the second signal.
  • the first signal may be a preamble sequence and/or data.
  • the functions of the preamble sequence may include at least one of the following: automatic gain control (automatic gain control, AGC), time synchronization, frequency synchronization, data packet detection, boundary detection, and rate indication.
  • AGC automatic gain control
  • time synchronization is used to reduce distortion by adjusting the strength of the received signal.
  • Time synchronization is used to reduce errors in non-coherent intervals by obtaining correct timing or sampling timing.
  • Boundary detection is used to detect the boundaries of the preamble and/or control information.
  • Rate indicators are used to indicate different data transfer rates.
  • the preamble sequence is located before the data, and the time domain resource used for transmitting the preamble sequence and the time domain resource used for transmitting data may be continuous or discontinuous.
  • the data here refers to the data corresponding to the preamble sequence.
  • Each element in the binary sequence corresponding to the first signal corresponds to one OFDM symbol in the N OFDM symbols. Or each element in the coded bit sequence corresponding to the first signal corresponds to one OFDM symbol in the N OFDM symbols.
  • one element of the binary sequence may be mapped on one OFDM symbol, or one element of the coded sequence may be mapped on one OFDM symbol.
  • the binary sequence refers to a sequence composed of binary number 0 (or called bit 0) and/or binary number 1 (or called bit 1)
  • the coded bit sequence refers to a sequence composed of binary number 0 (or called bit 0).
  • Each element in the complex number sequence or non-binary real number sequence corresponding to the second signal is mapped to a resource element (resource element, RE), or, the elements in the coded and modulated complex number sequence corresponding to the second signal are mapped to RE On, an element is mapped to an RE.
  • RE resource element
  • One RE corresponds to one OFDM symbol in the time domain, and corresponds to one subcarrier in the frequency domain. Therefore, one OFDM symbol can correspond to multiple REs, that is, multiple different elements of the complex sequence corresponding to the second signal can be mapped on one OFDM symbol.
  • An element of a complex number sequence consists of a+b*j, where a and b are real numbers, j is an imaginary unit, and the square of j is -1.
  • each element of the non-binary real number sequence is a real number, for example, a sequence composed of several 1s and several -1s can be a non-binary real number sequence.
  • the modulation manner of the first signal is different from the modulation manner of the second signal.
  • the modulation mode of the first signal is OOK modulation, ASK modulation, or FSK modulation.
  • the modulation method of the second signal is binary phase shift keying (binary phase shift keying, BPSK), quadrature phase shift keying (quadrature phase shift keying, QPSK), 16 quadrature amplitude modulation (quadrature amplitude modulation, QAM), 64QAM , 256QAM, 1024QAM, etc.
  • the encoding manner of the first signal is different from the encoding manner of the second signal.
  • the encoding method of the first signal is Manchester code, or Miller code, or FM0 (bi-phase space) code, or PIE (pulse interval encoding, pulse width code) code.
  • the encoding method of the second signal is a polar code, a low density parity check (LDPC) code, or a tail biting convolutional code (TBCC) code, or a turbo code , or the Reed-Muller code.
  • LDPC low density parity check
  • TBCC tail biting convolutional code
  • the N OFDM symbols further include N2 second symbols, at least one of the N2 second symbols carries a zero-power channel state information reference signal configured by the first device to the third device, Or, at least one of the N2 second symbols is configured by the first device as a resource not used for transmitting a downlink signal corresponding to the third device, or, at least one of the N2 second symbols carries
  • the above-mentioned third signal satisfies the characteristics of the above-mentioned second signal, which will not be repeated here.
  • the difference between the third signal and the second signal is that the energy of the third signal is lower than the energy of the second signal, or, the third signal
  • the power of the signal is lower than the power of the second signal, or, the energy per resource element (EPRE) of the third signal is lower than the EPRE of the third signal.
  • EPRE energy per resource element
  • the configuration information can be a rate matching pattern (RateMatchPattern) in the NR system. For details, see the cell RateMatchPattern in Section 6.3.2 of 3GPP TS38.331 V16.6.0.
  • the configuration information can be reserved resource configuration information in the LTE system. For details, see the cell ResourceReservationConfig in Section 6.3.2 of 3GPP TS36.331 V16.6.0.
  • the configuration information can be reserved resource configuration information in a narrowband IoT (narrow band IoT, NB-IoT) system. For details, see the cell ResourceReservationConfig-NB in Section 6.7.3.2 of 3GPP TS36.331 V16.6.0.
  • antenna ports used to transmit the N OFDM symbols of the first signal are the same.
  • cyclic prefixes and/or subcarrier spacings of the N OFDM symbols used to transmit the first signal are the same.
  • the N OFDM symbols used to transmit the first signal are located in K time units, and the antenna ports of all OFDM symbols used to transmit the first signal in the first time unit are the same, wherein the first time unit is one or more time units in the K time units.
  • K is 2, and the time units are sequentially numbered from 0 to 1.
  • the first time unit is time unit 0 or time unit 1.
  • all OFDM symbols used to transmit the first signal have the same antenna port.
  • the antenna ports used to transmit the first signal are the same for all OFDM symbols.
  • the antenna port used for transmitting the OFDM symbol of the first signal in time unit 0 and the antenna port used for transmitting the OFDM symbol of the first signal in time unit 1 may be the same or different. It should be understood that the above time unit may be a time slot, a frame, a subframe, and the like.
  • the first symbol is an ON symbol corresponding to on-off keying modulation or multi-carrier on-off keying modulation
  • the second symbol is an OFF symbol corresponding to on-off keying modulation or multi-carrier on-off keying modulation.
  • the difference between the first symbol and the second symbol includes at least one of the following:
  • the first symbol is an OFDM symbol with energy transmission
  • the second symbol is an OFDM symbol without energy transmission
  • the first device can detect that the energy is higher than a certain threshold value, and on the second symbol, the first device does not detect that the energy is higher than a certain threshold value;
  • the energy of the first symbol is higher than the energy of the second symbol.
  • the first signal includes a downlink signal of the IoT, or a WUR wake-up signal.
  • the N1 first symbols have the same power. It can also be expressed as that the energy of the N1 first symbols is the same. It can also be expressed as, the EPREs of the N1 first symbols are the same.
  • the power difference between any two first symbols in the N1 first symbols is relatively close, or in other words, the absolute value of the power difference between any two first symbols in the N1 first symbols is smaller than the first threshold.
  • the first threshold is less than or equal to an average value of powers of N1 first symbols. It can also be expressed as that the energy difference between any two first symbols in the N1 first symbols is relatively close, or in other words, the absolute value of the energy difference between any two first symbols in the N1 first symbols is smaller than the second threshold.
  • the second threshold is less than or equal to an average value of energies of N1 first symbols.
  • the energy difference between any two first symbols in the N1 first symbols is relatively close, or in other words, the absolute value of the EPRE difference between any two first symbols in the N1 first symbols is smaller than the third threshold.
  • the third threshold is less than or equal to an average value of EPREs of N1 first symbols.
  • the first device may use different power in N1
  • the second signal is sent to a different third device on the ON symbol.
  • the powers on the N1 ON symbols are different, if the power of a certain ON symbol is low, the ON symbol may be mistaken for an OFF symbol by the second device, which affects the second device's perception of the ON OFF symbol. demodulation performance. Therefore, in order to avoid affecting the demodulation performance of the second device, the first device needs to ensure that the powers of the N1 first symbols are the same.
  • the first device may schedule multiple third devices with similar channel conditions to receive respective second signals on the N1 ON symbols, so that the power on each ON symbol is similar or the same.
  • the first device only schedules one third device to receive the second signal on the N1 ON symbols, and the power on each ON symbol may also be made the same.
  • the foregoing specific implementation manner is only an example, and it should be understood that the first device may also use other implementation manners to make the power/energy of the N1 ON symbols similar or the same, which is not limited in the present application.
  • the first signal may be modulated by MC-OOK based on a cyclic prefix OFDM (cyclic prefix OFDM, CP-OFDM) waveform.
  • the first signal may be carried by an OFDM symbol with a time length of 2 ⁇ s or 4 ⁇ s.
  • the first signal includes a preamble
  • the binary sequence corresponding to the preamble does not need to be coded.
  • the first signal includes data
  • information bits corresponding to the data need to be coded. For example, when the first signal includes data, it is assumed that the information bit of the data is "10" and the coded bit is "1001".
  • the coded bit "1" After modulation by MC-OOK or OOK, the coded bit "1" generates an ON symbol, and the coded bit "0" Generate OFF symbols, that is, the data is coded and modulated to generate ON symbols, OFF symbols, OFF symbols, and ON symbols in sequence.
  • the second signal sent by the first device to the third device can be carried on the RE corresponding to the ON symbol, and the zero-power channel state information reference signal can be carried on the RE corresponding to the OFF symbol.
  • the second signal or the third signal includes at least one of the following: downlink control information, a physical downlink shared channel, a reference signal, a synchronization signal, and a broadcast signal.
  • the above reference signal may be one or more of the following reference signals in the NR system: non-zero power channel state information reference signal, physical downlink shared channel (physical downlink shared channel, PDSCH) demodulation reference signal (demodulation reference signal, DMRS), PDSCH phase tracking reference signal (phase-tracking signal, PTRS), physical downlink control channel (physical downlink control channel, PDCCH) demodulation reference signal, PDCCH phase tracking reference signal, physical broadcast channel (physical broadcast channel , PBCH) demodulation reference signal, remote interference management reference signal (remote interference management reference signal, RIM-RS), positioning reference signal (positioning reference signal).
  • RIM-RS remote interference management reference signal
  • positioning reference signal positioning reference signal
  • the above reference signal may be one or more of the following reference signals in the LTE system: non-zero power channel state information reference signal, cell-specific reference signal (CRS), multimedia broadcast multicast single frequency network (multimedia broadcast multicast single frequency network) broadcast multicast service single frequency network, MBSFN) reference signal, user equipment (user equipment, UE) specific reference signal, enhanced PDCCH (enhancedPDCCH, EPDCCH), machine type PDCCH (machine type communicationPDCCH, MPDCCH) or short PDCCH (shortPDCCH, SPDCCH) Associated demodulation reference signal, PBCH demodulation reference signal, positioning reference signal (positioning reference signal), machine type communication wake up signal (MTC wake up signal, MWUS).
  • CRS cell-specific reference signal
  • multimedia broadcast multicast single frequency network multimedia broadcast multicast single frequency network
  • MBSFN multicast service single frequency network
  • MBSFN multicast service single frequency network
  • user equipment user equipment
  • UE user equipment
  • enhanced PDCCH enhancedPDCCH, EPDCCH
  • the above reference signal can be one or more of the following reference signals in the NB-IoT system: narrowband reference signal (narrowband reference signal, NRS), narrowband positioning reference signal (narrowband positioning reference signal, NPRS), narrowband wake-up signal (narrowband wake up signal).
  • narrowband reference signal narrowband reference signal
  • NPRS narrowband positioning reference signal
  • narrowband wake-up signal narrowband wake up signal
  • the first device sends a second signal to the third device on at least one symbol in the N1 ON symbols, for example, the second signal is downlink control information (downlink control information, DCI), correspondingly,
  • DCI downlink control information
  • the preamble sequence corresponds to a binary sequence with a number of elements of 32, that is, the transmission of the preamble sequence requires 32 OFDM symbols
  • Bit 1 in the preamble corresponds to an ON symbol
  • bit 0 in the preamble corresponds to an OFF symbol.
  • Transmission of the preamble requires 16 ON symbols and 16 OFF symbols in this example.
  • the first device may transmit DCI through ON symbols in the above 16 ON symbols, for example, transmit DCI to multiple third devices through 5 ON symbols, and the DCI transmitted by the 5 ON symbols may be sent to different third devices , as shown in FIG.
  • the multiple third devices include: terminal device 1#, terminal device 2#, terminal device 3#, and terminal device 4#.
  • the 5 ON symbols include symbol 2 and symbol 3 of time slot 0# (used to transmit DCI of terminal equipment 1#); symbol 0 of time slot 1# (used to transmit DCI of terminal equipment 2#), symbol 3 (used used to transmit DCI of terminal equipment 3#); symbol 0 of time slot 2# (used to transmit DCI of terminal equipment 4#).
  • the number of bit 0 (corresponding to OFF symbol) and bit 1 (corresponding to ON symbol) in the binary sequence corresponding to the preamble sequence may be the same or different.
  • FIG. 5 is only an example, and the present application does not limit it.
  • the format of the DCI transmitted on the above five ON symbols may be all DCI formats supported by the NR.
  • Table 1 For the information carried by the above-mentioned DCI format and the corresponding number of bits, see Section 7.3.1 in 3GPP TS 38.212 V16.7.0.
  • the format of the DCI transmitted on the above five ON symbols can be all DCI formats supported by LTE.
  • the information carried by the DCI format and the corresponding number of bits please refer to 5.3 in 3GPP TS 36.212 V16.6.0 .3.1.
  • the format of the DCI transmitted on the above five ON symbols can be all DCI formats supported by NB-IoT.
  • the information carried by the DCI format and the corresponding number of bits please refer to 6.4 in 3GPP TS 36.212 V16.6.0. 3 knots.
  • uplink data and/or downlink data scheduled by DCI may occupy multiple consecutive OFDM symbols.
  • the modulation mode of the first signal is usually OOK modulation.
  • the first signal should try to avoid using consecutive ON symbols or consecutive OFF symbols.
  • the DCI is a DCI that does not schedule data.
  • the DCI's The format is one of DCI format 1_0, DCI format 2_0, DCI format 2_1, DCI format 2_2, DCI format 2_3, DCI format 2_4, DCI format 2_5 or DCI format 2_6.
  • the DCI format is one of DCI format 1A, DCI format 1C, DCI format 3, DCI format 3A, DCI format 3B, DCI format 6-1A, DCI format 6-1B, or DCI format 6-2 kind.
  • the format of the DCI is one of DCI format N1 or DCI format N2.
  • the above N OFDM symbols include at least 4 consecutive first symbols (for example, ON symbols).
  • the first device sends a second signal to the third device in the 4 consecutive first symbols, for example, the second signal is a synchronization signal and/or a broadcast signal, and correspondingly, the third device receives the second signal.
  • the second signal is a synchronization signal and/or a broadcast signal
  • the transmission of the preamble sequence of the first signal is 32, that is, the transmission of the preamble sequence needs to occupy 32 OFDM symbols, bit 1 corresponds to an ON symbol, and bit 0 corresponds to an OFF symbol. Then the transmission of the preamble requires 16 ON symbols and 16 OFF symbols.
  • SSB synchronization signal and physical broadcast channel block
  • SSB consists of three parts: primary synchronization signals (PSS), secondary synchronization signals (SSS), and physical broadcast channel (PBCH).
  • PSS primary synchronization signals
  • SSS secondary synchronization signals
  • PBCH physical broadcast channel
  • the third device can obtain timing information, frequency offset information, cell identification, etc. through PSS and SSS, obtain wireless frame number through PBCH, align with the air interface, and obtain scheduling system information block 1 (system information block 1, SIB1) related information.
  • SIB1 scheduling system information block 1
  • an SSB here refers to an SSB in a beam direction, so the binary bit sequence corresponding to the first signal includes at least one "1 1 1 1”, as shown in the figure 6, the preamble sequence of the first signal includes at least one "1 1 1 1", or at least includes one "0 0 1 1 1”, or, the bit sequence corresponding to the preamble of the first signal starts with "1 1 1 1, or start with "0 0 1 1 1”.
  • the first device may send the SSB to the third device in the OFDM symbol corresponding to "1 1 1 1". It should be understood that 0 here represents bit 0, and 1 here represents bit 1.
  • the modulation mode of the first signal is usually OOK modulation. In order to obtain the boundary of ON symbols or OFF symbols of OOK modulation, the first signal should try to avoid using consecutive ON symbols or consecutive OFF symbols.
  • the SSB is a non cell defined SSB (non cell defined SSB, non CD-SSB), that is, the SSB SIB1 is absent.
  • the number of OFDM symbols occupied by the preamble sequence of the first signal is an integer multiple of the number of OFDM symbols in one time slot. It can also be expressed as that the number of elements in the preamble sequence of the first signal is an integer multiple of the number of OFDM symbols in one time slot.
  • the first device sends a second signal to the third device on at least one of the N1 ON symbols, for example, the second signal is a physical downlink shared channel (physical downlink shared channel, PDSCH), correspondingly, the third The device receives the second signal on at least one of the N1 ON symbols.
  • the second signal is a physical downlink shared channel (physical downlink shared channel, PDSCH)
  • PDSCH physical downlink shared channel
  • the first device may transmit to the third The device sends configuration information, which is used by the third device to determine resources that cannot be used for PDSCH transmission.
  • the configuration information corresponds to one or more rate matching patterns.
  • the unit configured in the time domain for each rate matching pattern is 1 or 2 time slots, so in order to cooperate with the rate matching pattern, the number of elements of the preamble sequence of the first signal can be set to a multiple of 14 or 28, for example
  • the number of elements in the preamble sequence of a signal is 28, that is, the transmission of the preamble sequence of the first signal requires 28 OFDM symbols, bit 1 corresponds to an ON symbol, and bit 0 corresponds to an OFF symbol. For example, the transmission of the preamble requires 14 ON symbols and 14 OFF symbols.
  • bitsInResourceBlock is used to indicate which OFDM symbols can transmit PDSCH and which OFDM symbols cannot transmit PDSCH on one or more time slots during PDSCH transmission. Therefore, in order to ensure that the bitmap bits corresponding to the preamble sequence of the first signal and the rate matching pattern can correspond to each other, the number of elements of the preamble sequence of the first signal needs to be an integer multiple of 14.
  • method 200 also includes:
  • Step S220 before the first device sends the first signal to the second device on N OFDM symbols, the first device sends deactivation information to the third device, where the deactivation information is used to deactivate the first resource.
  • the third device deactivates the first resource after receiving the deactivation information.
  • step S220 The premise that the method 200 includes step S220 is that before the first device sends the first signal to the second device on N OFDM symbols, the first device sends a semi-static configuration signaling to the third device, and the semi-static configuration signaling The configured first resource has been activated, and the first resource includes the foregoing N OFDM symbols.
  • the first device configures semi-static configuration signaling to the third device, where the semi-static configuration signaling may be a semi-static PDSCH or a semi-static reference signal, and
  • the first resource for example, a periodic resource
  • the first resource has been activated (for example, activated at time T1 ), and resource overlap occurs between the first resource and the aforementioned N OFDM symbols.
  • the network device In order to prevent the third device from mistaking the first signal for the information scheduled by the first resource configured by the semi-static configuration signaling and affecting the reception performance of the third device, the network device needs to deactivate the above-mentioned semi-static configuration before the first signal is transmitted. Configure the first resource configured by signaling (for example, deactivate at time T2).
  • Step S220 can prevent the third device from mistaking the first signal as information scheduled by the first resource configured by the semi-static configuration signaling, thereby affecting the receiving performance of the third device.
  • the present application also proposes a signal sending method 300, the method 300 including:
  • Step S310 the first device sends a first signal to the second device, the first signal is carried on N OFDM symbols, wherein N OFDM symbols include N1 first symbols, N is an integer greater than or equal to 1, N1 ⁇ N.
  • the second device receives the first signal.
  • the first signal may be modulated by MC-OOK based on a CP-OFDM waveform.
  • the first signal may be carried by an OFDM symbol with a time length of 2 ⁇ s or 4 ⁇ s.
  • the information bit of the data is "10" and the coded bit is "1001”.
  • the coded bit "1" After modulation by MC-OOK or OOK, the coded bit "1" generates an ON symbol, and the coded bit "0" Generate OFF symbols, that is, the data is coded and modulated to generate ON symbols, OFF symbols, OFF symbols, and ON symbols in sequence.
  • the first signal may be a preamble sequence and/or data.
  • the functions of the preamble sequence may include at least one of the following: automatic gain control (automatic gain control, AGC), time synchronization, frequency synchronization, data packet detection, boundary detection, and rate indication.
  • AGC automatic gain control
  • time synchronization is used to reduce distortion by adjusting the strength of the received signal.
  • Time synchronization is used to reduce errors in non-coherent intervals by obtaining correct timing or sampling timing.
  • Boundary detection is used to detect the boundaries of the preamble and/or control information.
  • Rate indicators are used to indicate different data transfer rates.
  • the preamble sequence is located before the data, and the time domain resource used for transmitting the preamble sequence and the time domain resource used for transmitting data may be continuous or discontinuous.
  • the data here refers to the data corresponding to the preamble sequence.
  • Each element in the binary sequence corresponding to the first signal corresponds to one OFDM symbol in the N OFDM symbols. Or each element in the coded bit sequence corresponding to the first signal corresponds to one OFDM symbol in the N OFDM symbols.
  • one element of the binary sequence may be mapped on one OFDM symbol, or one element of the coded sequence may be mapped on one OFDM symbol.
  • the binary sequence refers to a sequence composed of binary number 0 (or called bit 0) and/or binary number 1 (or called bit 1).
  • the coded bit sequence refers to a sequence composed of binary number 0 (or called bit 0) and/or binary number 1 (or called bit 1).
  • a binary number in the sequence is 1 element, for example, "0" or "1" is 1 element of the sequence.
  • the number of elements contained in this sequence is n.
  • antenna ports used to transmit the N OFDM symbols of the first signal are the same.
  • cyclic prefixes and/or subcarrier spacings of the N OFDM symbols used to transmit the first signal are the same.
  • the N OFDM symbols used to transmit the first signal are located in K time units, and the antenna ports of all OFDM symbols used to transmit the first signal in the first time unit are the same, wherein the first time unit is One or more time units in the K time units.
  • K is 2, and the time units are sequentially numbered from 0 to 1.
  • the first time unit is time unit 0 or time unit 1.
  • time unit 0 all OFDM symbols used to transmit the first signal have the same antenna port.
  • the antenna ports used to transmit the first signal are the same for all OFDM symbols.
  • the antenna ports between time unit 0 and time unit 1 may be the same or different.
  • the modulation manner of the first signal is OOK modulation, ASK modulation, or FSK modulation.
  • the encoding method of the first signal is manchester code, or miller encoding, or FM0 (ie bi-phase space) encoding, or PIE (pulse interval encoding, pulse width encoding) coding.
  • the N1 first symbols have the same power. It can also be expressed as that the energy of the N1 first symbols is the same. It can also be expressed as, the EPREs of the N1 first symbols are the same.
  • the power difference between any two first symbols in the N1 first symbols is relatively close, or in other words, the absolute value of the power difference between any two first symbols in the N1 first symbols is smaller than the first threshold.
  • the first threshold is less than or equal to an average value of powers of N1 first symbols. It can also be expressed as that the energy difference between any two first symbols in the N1 first symbols is relatively close, or in other words, the absolute value of the energy difference between any two first symbols in the N1 first symbols is smaller than the second threshold.
  • the second threshold is less than or equal to an average value of energies of N1 first symbols.
  • the energy difference between any two first symbols in the N1 first symbols is relatively close, or in other words, the absolute value of the EPRE difference between every two first symbols in the N1 first symbols is smaller than the third threshold.
  • the third threshold is less than or equal to an average value of EPREs of N1 first symbols.
  • the first signal includes a downlink signal of the IoT, or a WUR wake-up signal.
  • the first symbol is an ON symbol corresponding to on-off keying modulation or multi-carrier on-off keying modulation
  • the second symbol is an OFF symbol corresponding to on-off keying modulation or multi-carrier on-off keying modulation.
  • the difference between the first symbol and the second symbol includes at least one of the following:
  • the first symbol is an OFDM symbol with energy transmission
  • the second symbol is an OFDM symbol without energy transmission
  • the first device can detect that the energy is higher than a certain threshold value, and on the second symbol, the first device does not detect that the energy is higher than a certain threshold value;
  • the energy of the first symbol is higher than the energy of the second symbol.
  • the corresponding RE carries some information sent by the first device to the third device, so that the first device can send both the first signal to the second device and the second signal to the third device on the same OFDM symbol , to improve spectral efficiency.
  • the information sent by the first device to the third device may be, for example, one or more items of downlink control information, physical downlink shared channel, reference signal, synchronization signal, and broadcast signal.
  • the above N OFDM symbols include 4 consecutive first symbols (for example, ON symbols).
  • the binary bit sequence corresponding to the first signal includes at least one "1 1 1 1", as shown in Figure 6, the preamble sequence of the first signal includes at least one "1 1 1 1", or at least one "0 0 1 1 1”, or, the bit sequence corresponding to the lead of the first signal starts with “1 1 1 1", or starts with "0 0 1 1 1”.
  • the first device may send the first signal (for example, SSB) to the third device in the OFDM symbol corresponding to "1 1 1 1". It should be understood that 0 here represents bit 0, and 1 here represents bit 1.
  • the first device can bear the SSB on the REs corresponding to the ON symbols of the N OFDM symbols, so as to reduce the overhead of network resources.
  • the number of OFDM symbols occupied by the preamble sequence of the first signal is an integer multiple of the number of OFDM symbols in one time slot. It can also be expressed as that the number of elements in the preamble sequence of the first signal is an integer multiple of the number of OFDM symbols in one time slot.
  • the first device may carry the first signal (eg, PDSCH) on the subcarriers corresponding to the ON symbols of the N OFDM symbols, so as to reduce network resource overhead.
  • the dotted line steps shown in the above flowchart 4 or 9 are optional steps, and the order of each step is determined according to the internal logic of the method, and the sequence numbers shown in Fig. The sequencing of the steps imposes constraints.
  • execution subject shown in FIG. 4 or 9 is only an example, and the execution subject may also be a chip, a chip system, or a processor that supports the execution subject to implement the method shown in FIG. No limit.
  • the methods and operations implemented by the first device may also be implemented by components (such as chips or circuits) that can be used in the first device, and the methods and operations implemented by the second device, It can also be realized by components (such as chips or circuits) that can be used in the second device.
  • each network element such as a transmitting end device or a receiving end device, includes a corresponding hardware structure and/or software module for performing each function in order to realize the above functions.
  • the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software drives hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.
  • the embodiment of the present application can divide the functional modules of the transmitting end device or the receiving end device according to the above method example, for example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one processing module middle.
  • the above-mentioned integrated modules can be implemented in the form of hardware or in the form of software function modules. It should be noted that the division of modules in the embodiment of the present application is schematic, and is only a logical function division, and there may be other division methods in actual implementation. In the following, description will be made by taking the division of each functional module corresponding to each function as an example.
  • Fig. 10 is a schematic block diagram of a communication device provided by an embodiment of the present application.
  • the communication device 400 includes a transceiver unit 410 and a processing unit 420 .
  • the transceiver unit 410 can communicate with the outside, and the processing unit 420 is used for data processing.
  • the transceiver unit 410 may also be called a communication interface or a communication unit.
  • the communication device 400 may further include a storage unit, which may be used to store instructions and/or data, and the processing unit 420 may read instructions or and/or data in the storage unit.
  • a storage unit which may be used to store instructions and/or data
  • the processing unit 420 may read instructions or and/or data in the storage unit.
  • the communication device 400 may be a first device, the transceiver unit 410 is used to perform the receiving or sending operation of the first device in the method embodiment above, and the processing unit 420 is used to perform the operation in the method embodiment above Operations handled internally by the first device.
  • the communications apparatus 400 may be a device including the first device.
  • the communication apparatus 400 may be a component configured in the first device, for example, a chip in the first device.
  • the transceiver unit 410 may be an interface circuit, a pin, and the like.
  • the interface circuit may include an input circuit and an output circuit
  • the processing unit 420 may include a processing circuit.
  • the transceiver unit 410 is configured to send the first signal to the second device on N orthogonal frequency division multiplexing OFDM symbols, where the N OFDM symbols include N1 first symbols, where N is greater than Or an integer equal to 1, N1 ⁇ N, the transceiving unit 410 is further configured to send a second signal to a third device on at least one first symbol in the N1 first symbols.
  • the first device can use the downlink signal in the existing communication system to generate the first signal to be sent to the second device, and can use the resource element RE corresponding to the first symbol carrying the first signal to send the first signal to the third device.
  • the second signal of the device (different from the capability of the second device) can realize the introduction of technologies similar to RFID and WUR in the existing communication system, and can save network resource overhead.
  • the N1 first symbols have the same power.
  • the first symbol is an ON symbol corresponding to on-off keying modulation or multi-carrier on-off keying modulation.
  • the second symbol is an OFF symbol corresponding to on-off keying modulation or multi-carrier on-off keying modulation.
  • the N OFDM symbols include at least 4 consecutive first symbols.
  • the 4 consecutive first symbols carry a synchronization signal and/or a broadcast signal.
  • the number of OFDM symbols occupied by the preamble sequence of the first signal is an integer multiple of the number of OFDM symbols in one time slot.
  • the second signal includes at least one of the following: downlink control information; a physical downlink shared channel; a reference signal; a synchronization signal; and a broadcast signal.
  • the downlink control information is downlink control information that does not schedule data.
  • the transceiving unit 410 has sent a semi-static configuration signaling to the third device before sending the first signal to the second device on N OFDM symbols, and the semi-static configuration signaling configures The first resource has been activated, the first resource includes the N OFDM symbols, and the transceiver unit 410 is further configured to send deactivation information to the third device before sending the first signal to the second device on the N OFDM symbols, The deactivation information is used to deactivate the first resource.
  • Fig. 11 is a schematic block diagram of a communication device provided by an embodiment of the present application.
  • the communication device 500 includes a transceiver unit 510 and a processing unit 520 .
  • the transceiver unit 510 can communicate with the outside, and the processing unit 520 is used for data processing.
  • the transceiver unit 510 may also be called a communication interface or a communication unit.
  • the communication device 500 may further include a storage unit, which may be used to store instructions and/or data, and the processing unit 520 may read instructions or and/or data in the storage unit.
  • a storage unit which may be used to store instructions and/or data
  • the processing unit 520 may read instructions or and/or data in the storage unit.
  • the communication device 500 may be a second device, the transceiver unit 510 is used to perform the receiving or sending operation of the second device in the method embodiment above, and the processing unit 520 is used to perform the operation in the method embodiment above Operations handled internally by the second device.
  • the communications apparatus 500 may be a device including the second device.
  • the communication apparatus 500 may be a component configured in the second device, for example, a chip in the second device.
  • the transceiver unit 510 may be an interface circuit, a pin, and the like.
  • the interface circuit may include an input circuit and an output circuit
  • the processing unit 520 may include a processing circuit.
  • the transceiver unit 510 is configured to receive a first signal from a first device on N orthogonal frequency division multiplexing OFDM symbols, where the N OFDM symbols include N1 first symbols, and the N1 At least one of the first symbols carries the second signal sent by the first device to the third device, where N is an integer greater than or equal to 1, and N1 ⁇ N.
  • the transceiver unit 510 is configured to receive the first signal from the first device on N orthogonal frequency division multiplexing OFDM symbols, where the N OFDM symbols include N1 first symbols, where N It is an integer greater than or equal to 1, N1 ⁇ N.
  • the first signal received by the second device can be generated based on the downlink signal in the existing communication system, and the resource element RE corresponding to the first symbol of the first signal can also be sent to the third device (with the second Devices with different capabilities) realize the introduction of technologies similar to RFID and WUR in the existing communication system, and can save network resource overhead.
  • the N1 first symbols have the same power.
  • the first symbol is an ON symbol corresponding to on-off keying modulation or multi-carrier on-off keying modulation.
  • the second symbol is an OFF symbol corresponding to on-off keying modulation or multi-carrier on-off keying modulation.
  • the N OFDM symbols include at least 4 consecutive first symbols.
  • the 4 consecutive first symbols carry a synchronization signal and/or a broadcast signal.
  • the number of OFDM symbols occupied by the preamble sequence of the first signal is an integer multiple of the number of OFDM symbols in a time slot.
  • the second signal includes at least one of the following: downlink control information, a physical downlink shared channel, a reference signal, a synchronization signal, and a broadcast signal.
  • the downlink control information is downlink control information that does not schedule data.
  • the embodiment of the present application further provides a communication device 600 .
  • the communication device 600 includes a processor 610, the processor 610 is coupled with a memory 620, the memory 620 is used to store computer programs or instructions and/or data, and the processor 610 is used to execute the computer programs or instructions and/or data stored in the memory 620 , so that the methods in the above method embodiments are executed.
  • the communication device 600 includes one or more processors 610 .
  • the communication device 600 may further include a memory 620 .
  • the communication device 600 may include one or more memories 620 .
  • the memory 620 may be integrated with the processor 610, or set separately.
  • the communication device 600 may further include a transceiver 630 and/or a communication interface, and the transceiver 630 and/or the communication interface are used for receiving and/or sending signals.
  • the processor 610 is configured to control the transceiver 630 and/or the communication interface to receive and/or send signals.
  • the communications apparatus 600 is configured to implement the operations performed by the first device in the above method embodiments.
  • the processor 610 is configured to implement the operations performed internally by the first device in the above method embodiments
  • the transceiver 630 is configured to implement the receiving or sending operations performed by the first device in the above method embodiments.
  • the processing unit 420 in the apparatus 400 may be the processor in FIG. 12
  • the transceiver unit 410 may be the transceiver in FIG. 12 .
  • the embodiment of the present application further provides a communication device 700 .
  • the communication device 700 includes a processor 710, the processor 710 is coupled with a memory 720, the memory 720 is used to store computer programs or instructions and/or data, and the processor 710 is used to execute the computer programs or instructions and/or data stored in the memory 720 , so that the methods in the above method embodiments are executed.
  • the communication device 700 includes one or more processors 710 .
  • the communications device 700 may further include a memory 720 .
  • the communication device 700 may include one or more memories 720 .
  • the memory 720 may be integrated with the processor 710, or set separately.
  • the communication device 700 may further include a transceiver 730 and/or a communication interface, and the transceiver 730 and/or the communication interface are used for receiving and/or sending signals.
  • the processor 710 is configured to control the transceiver 730 to receive and/or send signals.
  • the communication apparatus 700 is configured to implement the operations performed by the second device in the above method embodiments.
  • the processor 710 is configured to implement the operations performed internally by the second device in the above method embodiments
  • the transceiver 730 is configured to implement the receiving or sending operations performed by the second device in the above method embodiments.
  • the processing unit 520 in the apparatus 500 may be the processor in FIG. 13
  • the transceiver unit 510 may be the transceiver and/or the communication interface in FIG. 13 .
  • the operations performed by the processor 710 reference may be made to the description of the processing unit 520 above, and for the operations performed by the transceiver 730, reference may be made to the description of the transceiver unit 510, which will not be repeated here.
  • An embodiment of the present application also provides a communication device, including a processor, the processor is coupled to an input/output interface, and data is transmitted through the input/output interface, and the processor is configured to execute the method in any one of the above method embodiments.
  • the embodiment of the present application also provides a communication device 800 .
  • the communication device 800 includes a logic circuit 810 and an input/output interface (input/output interface) 820 .
  • the logic circuit 810 may be a processing circuit in the communication device 800 .
  • the logic circuit 810 may be coupled to the storage unit, and invoke instructions in the storage unit, so that the communication device 800 can implement the methods and functions of the embodiments of the present application.
  • the input/output interface 820 may be an input/output circuit in the communication device 800, which outputs information processed by the communication device 800, or inputs data or signaling information to be processed into the communication device 800 for processing.
  • the communications apparatus 800 is configured to implement the operations performed by the first device in the foregoing method embodiments.
  • the logic circuit 810 is used to implement the processing-related operations performed by the first device in the above method embodiments, for example, the processing-related operations performed by the first device in the embodiment shown in FIG. 4 or 9, input/output
  • the interface 820 is used to implement the sending and/or receiving related operations performed by the first device in the above method embodiments, for example, the sending and/or receiving related operations performed by the first device in the embodiment shown in FIG. 4 or 9 operate.
  • the operations performed by the logic circuit 810 refer to the above description of the processing unit 420
  • the operations performed by the input/output interface 820 refer to the above description for the transceiver unit 410 , which will not be repeated here.
  • the communication apparatus 800 is configured to implement the operations performed by the second device in the above method embodiments.
  • the logic circuit 810 is used to implement the processing-related operations performed by the second device in the above method embodiments, for example, the processing-related operations performed by the second device in the embodiment shown in FIG. 4 or 9, input/output
  • the interface 820 is used to implement the sending and/or receiving related operations performed by the second device in the above method embodiments, for example, the sending and/or receiving related operations performed by the second device in the embodiment shown in FIG. 4 or 9 operate.
  • the operations performed by the logic circuit 810 refer to the above description of the processing unit 520
  • the operations performed by the input/output interface 820 refer to the above description for the transceiver unit 510 , which will not be repeated here.
  • the above communication device may be one or more chips.
  • the communication device may be a field programmable gate array (field programmable gate array, FPGA), an application specific integrated circuit (ASIC), or a system chip (system on chip, SoC). It can be a central processor unit (CPU), a network processor (network processor, NP), a digital signal processing circuit (digital signal processor, DSP), or a microcontroller (micro controller unit) , MCU), can also be a programmable controller (programmable logic device, PLD) or other integrated chips.
  • CPU central processor unit
  • NP network processor
  • DSP digital signal processor
  • microcontroller micro controller unit
  • PLD programmable logic device
  • each step of the above method can be completed by an integrated logic circuit of hardware in a processor or an instruction in the form of software.
  • the steps of the methods disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor.
  • the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register.
  • the storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware. To avoid repetition, no detailed description is given here.
  • the processor in the embodiment of the present application may be an integrated circuit chip, which has a signal processing capability.
  • each step of the above-mentioned method embodiments may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software.
  • the above-mentioned processor may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components .
  • DSP digital signal processor
  • ASIC application-specific integrated circuit
  • FPGA field-programmable gate array
  • a general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.
  • the steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register.
  • the storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiments of the present application may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories.
  • the non-volatile memory can be read-only memory (read-only memory, ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically programmable Erases programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • Volatile memory can be random access memory (RAM), which acts as external cache memory.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • ESDRAM enhanced synchronous dynamic random access memory
  • SLDRAM direct memory bus random access memory
  • direct rambus RAM direct rambus RAM
  • An embodiment of the present application further provides a communication system, where the communication system includes a first device and a second device, and optionally, the communication system further includes a third device.
  • the present application also provides a computer-readable medium, the computer-readable medium stores program codes, and when the program codes are run on a computer, the computer is made to execute the program shown in Figure 4 or 9.
  • Example method For example, when the computer program is executed by a computer, the computer can implement the method executed by the first device or the method executed by the second device in the above method embodiments.
  • the embodiments of the present application also provide a computer program product including instructions, which, when executed by a computer, enable the computer to implement the method executed by the first device or the method executed by the second device in the above method embodiments.
  • all or part of them may be implemented by software, hardware, firmware or any combination thereof.
  • software When implemented using software, it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application will be generated in whole or in part.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website, computer, server or data center Transmission to another website site, computer, server or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.).
  • the computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server or a data center integrated with one or more available media.
  • the available medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (for example, a solid state disk (solid state disc, SSD)) etc.
  • a magnetic medium for example, a floppy disk, a hard disk, a magnetic tape
  • an optical medium for example, a high-density digital video disc (digital video disc, DVD)
  • a semiconductor medium for example, a solid state disk (solid state disc, SSD)
  • the network equipment and terminal equipment in the above-mentioned various apparatus embodiments correspond to the network equipment and terminal equipment in the method embodiments, and corresponding steps are performed by corresponding modules or units, for example, the communication unit (transceiver) performs the receiving or receiving in the method embodiments.
  • the communication unit transmits the receiving or receiving in the method embodiments.
  • other steps besides sending and receiving may be performed by a processing unit (processor).
  • processors for the functions of the specific units, reference may be made to the corresponding method embodiments. Wherein, there may be one or more processors.
  • a component may be, but is not limited to being, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and/or a computer.
  • an application running on a computing device and the computing device can be components.
  • One or more components can reside within a process and/or thread of execution and a component can be localized on one computer and/or distributed between two or more computers.
  • these components can execute from various computer readable media having various data structures stored thereon.
  • a component may, for example, be based on a signal having one or more packets of data (e.g., data from two components interacting with another component between a local system, a distributed system, and/or a network, such as the Internet via a signal interacting with other systems). Communicate through local and/or remote processes.
  • packets of data e.g., data from two components interacting with another component between a local system, a distributed system, and/or a network, such as the Internet via a signal interacting with other systems.
  • the disclosed systems, devices and methods may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disc and other media that can store program codes. .

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Abstract

本申请实施例提供了一种发送信号的方法和装置。该方法包括：第一设备在N个正交频分复用OFDM符号上向第二设备发送第一信号，该N个OFDM符号包括N1个第一符号，其中N为大于或等于1的整数，N1＜N，第一设备在该N1个第一符号中的至少一个第一符号上向第三设备发送第二信号。通过本申请提供的发送信号的方法和装置，能够在通信系统中引入类似射频识别RFID和唤醒无线电WUR的技术，并且能够节省网络资源开销。

Description

发送信号的方法和装置
本申请要求于2021年10月29日提交中国专利局、申请号为202111273362.4、申请名称为“发送信号的方法和装置”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领域，并且，更具体地，涉及发送信号的方法和装置。
背景技术
在射频识别(radio frequency identification，RFID)技术中，阅读器向标签发送载波，标签对接收到的载波进行调制和反射以向阅读器传输数据，在此过程中标签不产生载波，因此可将标签的射频前端减少到单个晶体管开关，降低制造成本。
电气和电子工程师协会(institute of electrical and electronics engineers，IEEE)802.11ba唤醒无线电(wake-up radio，WUR)的有源设备包括主连接无线电(primary connection radio,PCR)和伴连接无线电(companion radio，CR)，主连接无线电也可以称为主接收机，伴连接无线电又称为唤醒接收机(wake-up receiver，WuRx)，唤醒接收机监控接入点(access point，AP)发送的唤醒帧，如果唤醒接收机接收到唤醒帧，则触发PCR从休眠模式迁移到激活模式，因此唤醒接收机在没有接收到唤醒帧的时候可长时间地处于休眠模式，能够降低功耗。
随着第五代移动通信技术(5th generation mobile communication technology，5G)新空口(new radio，NR)机器型通信(machine-type communication,MTC)和物联网(internet of things,IoT)通信的广泛应用，随着IoT设备的数量的增长，对IoT设备的制造成本和功耗降低的诉求越强，因此如何在NR系统中引入类似RFID和WUR的技术，以降低设备的制造成本或功耗是目前亟需解决的问题。
发明内容
本申请实施例提供一种发送信号的方法，能够在通信系统中引入类似RFID和WUR的技术，并且能够节省网络资源开销。
第一方面，提供了一种发送信号的方法。该方法可以由第一设备执行，或者，也可以由配置在第一设备中的部件(如芯片或芯片系统等)执行，第一设备可以是网络设备，也可以是终端设备，本申请对此不作限定。该方法包括：第一设备在N个正交频分复用OFDM符号上向第二设备发送第一信号，该N个OFDM符号包括N1个第一符号，其中N为大于或等于1的整数，N1＜N，第一设备在该N1个第一符号中的至少一个第一符号上向第三设备发送第二信号。
基于上述方案，第一设备能够利用现有通信系统中的下行信号生成发送至第二设备的 第一信号，并且能够利用承载第一信号的第一符号所对应的资源元素RE承载发送至第三设备(与第二设备的能力不同)的第二信号，可以实现在现有通信系统中引入类似RFID和WUR的技术，并且能够节省网络资源开销。
结合第一方面，在第一方面的某些实现方式中，该N个OFDM符号还包括N2个第二符号，该N2个第二符号中的至少一个第二符号承载第一设备配置给第三设备的零功率信道状态信息参考信号，或者，该N2个第二符号中的至少一个第二符号被第一设备配置为不用于传输第三设备对应的下行信号的资源，其中，N2+N1＝N。
基于上述方案，第一设备能够在第二符号上配置一些零功率或相比第一符号功率低的信号，能够进一步节省网络资源开销。
结合第一方面，在第一方面的某些实现方式中，该第一符号为开关键控调制或者多载波开关键控调制对应的ON符号。
结合第一方面，在第一方面的某些实现方式中，该第二符号为开关键控调制或者多载波开关键控调制对应的OFF符号。
结合第一方面，在第一方面的某些实现方式中，该N1个第一符号的功率相同。
基于上述方案，可以避免在N1个ON符号上的功率不同，且在某一个ON符号的功率较低的情况下，该ON符号被第二设备误认为是OFF符号，从而影响第二设备对ON OFF符号的解调性能。
结合第一方面，在第一方面的某些实现方式中，该N个OFDM符号至少包括4个连续的该第一符号。
结合第一方面，在第一方面的某些实现方式中，该4个连续的该第一符号上承载同步信号和/或广播信号。
基于上述方案，第一设备可以在4个连续的ON符号对应的RE上承载SSB，以减少网络资源的开销。
结合第一方面，在第一方面的某些实现方式中，该第一信号的前导序列所占的OFDM符号个数为一个时隙内OFDM符号个数的整数倍。
基于上述方案，第一设备可以在上述N个OFDM符号的ON符号对应的RE上承载PDSCH，以减少网络资源的开销。
结合第一方面，在第一方面的某些实现方式中，该第二信号包括以下至少一项：下行控制信息；物理下行共享信道；参考信号；同步信号；广播信号。
结合第一方面，在第一方面的某些实现方式中，当该第二信号包括下行控制信息时，该下行控制信息为不调度数据的下行控制信息。
基于上述方案，能够避免DCI调度的数据占用连续的OFDM符号对第二设备获取第一信号中ON符号或OFF符号边界的影响。
结合第一方面，在第一方面的某些实现方式中，第一设备在N个OFDM符号上向第二设备发送第一信号前，第一设备向第三设备发送了半静态配置信令，并且该半静态配置信令配置的第一资源已被激活，该第一资源包括该N个OFDM符号，在第一设备在N个OFDM符号上向第二设备发送第一信号前，第一设备向第三设备发送去激活信息，该去激活信息用于去激活第一资源。
基于上述方案，为了避免第三设备将第一信号误认为半静态配置信令配置的第一资源 所调度的信息，影响第三设备的接收性能，第一设备需要在该第一信号传输前，去激活上述半静态配置信令配置的第一资源。
第二方面，提供了一种发送信号的方法。该方法可以由第二设备执行，或者，也可以由配置在第二设备中的部件(如芯片或芯片系统等)执行，第二设备可以是终端设备，本申请对此不作限定。第二设备在N个正交频分复用OFDM符号上接收来自第一设备的第一信号，该N个OFDM符号包括N1个第一符号，该N1个第一符号中的至少一个第一符号上承载第一设备向第三设备发送的第二信号，其中N为大于或等于1的整数，N1＜N。
基于上述方案，第二设备接收的第一信号可以基于现有通信系统中的下行信号生成，并且第一信号的第一符号所对应的资源元素RE还可以承载发送至第三设备(与第二设备的能力不同)的第二信号，实现在现有通信系统中引入类似RFID和WUR的技术，并且能够节省网络资源开销。
结合第二方面，在第二方面的某些实现方式中，该N个OFDM符号还包括N2个第二符号，该N2个第二符号中的至少一个OFDM符号承载第一设备配置给第三设备的零功率信道状态信息参考信号，或者，该N2个第二符号中的至少一个第二符号被第一设备配置为不用于传输第三设备对应的下行信号的资源，其中，N2+N1＝N。
基于上述方案，第二符号上可以配置一些零功率或相比第一符号功率低的信号，能够进一步节省网络资源开销。
结合第二方面，在第二方面的某些实现方式中，该第一符号为开关键控调制或者多载波开关键控调制对应的ON符号。
结合第二方面，在第二方面的某些实现方式中，该第二符号为开关键控调制或者多载波开关键控调制对应的OFF符号。
结合第二方面，在第二方面的某些实现方式中，该N1个第一符号的功率相同。
基于上述方案，可以避免在N1个ON符号上的功率不同，且在某一个ON符号的功率较低的情况下，该ON符号被第二设备误认为是OFF符号，从而影响第二设备对ON OFF符号的解调性能。
结合第二方面，在第二方面的某些实现方式中，该N个OFDM符号至少包括4个连续的该第一符号。
结合第二方面，在第二方面的某些实现方式中，该4个连续的该第一符号上承载同步信号和/或广播信号。基于上述方案，第一设备可以在上述4个连续的ON符号对应的RE上承载SSB，以减少网络资源的开销。
结合第二方面，在第二方面的某些实现方式中，该第一信号的前导序列所占的OFDM符号个数为一个时隙内OFDM符号个数的整数倍。
基于上述方案，第一设备可以在上述N个OFDM符号的ON符号对应的RE上承载PDSCH，以减少网络资源的开销。
结合第二方面，在第二方面的某些实现方式中，该第二信号包括以下至少一项：下行控制信息，物理下行共享信道，参考信号，同步信号，广播信号。
结合第二方面，在第二方面的某些实现方式中，当该第二信号包括下行控制信息时，该下行控制信息为不调度数据的下行控制信息。
基于上述方案，能够避免DCI调度的数据占用连续的OFDM符号对第二设备获取第 一信号中ON符号或OFF符号边界的影响。
第三方面，提供了一种发送信号的方法。该方法可以由第一设备执行，或者，也可以由配置在第一设备中的部件(如芯片或芯片系统等)执行，第一设备可以是网络设备，也可以是终端设备，本申请对此不作限定。该方法包括：第一设备在N个正交频分复用OFDM符号上向第二设备发送第一信号，该N个OFDM符号包括N1个第一符号，其中N为大于或等于1的整数，N1＜N。
基于上述方案，可以在现有通信系统中引入类似RFID和WUR的技术，使得第一设备能够利用承载第一信号的第一符号所对应的资源元素RE承载发送至第三设备(与第二设备的能力不同)的第二信号(例如下行控制信息，物理下行共享信道，参考信号，同步信号，广播信号中的一项或多项)，从而提升频谱效率。
结合第三方面，在第三方面的某些实现方式中，该N个OFDM符号还包括N2个第二符号，N2+N1＝N。
基于上述方案，第一设备能够在第二符号上配置一些零功率或相比第一符号功率低的信号，能够进一步提升频谱效率。
结合第三方面，在第三方面的某些实现方式中，该第一符号为开关键控调制或者多载波开关键控调制对应的ON符号。
结合第三方面，在第三方面的某些实现方式中，该第二符号为开关键控调制或者多载波开关键控调制对应的OFF符号。
结合第三方面，在第三方面的某些实现方式中，该N1个第一符号的功率相同。
基于上述方案，可以避免在N1个ON符号上的功率不同，且在某一个ON符号的功率较低的情况下，该ON符号被第二设备误认为是OFF符号，从而影响第二设备对ON OFF符号的解调性能。
结合第三方面，在第三方面的某些实现方式中，该N个OFDM符号至少包括4个连续的该第一符号。
基于上述方案，第一设备可以在4个连续的ON符号对应的RE上承载SSB，以提升频谱效率。
结合第三方面，在第三方面的某些实现方式中，该第一信号的前导序列所占的OFDM符号个数为一个时隙内OFDM符号个数的整数倍。
基于上述方案，第一设备可以在上述N个OFDM符号的ON符号对应的RE上承载PDSCH，以减少网络资源的开销。
第四方面，提供了一种发送信号的方法。该方法可以由第二设备执行，或者，也可以由配置在第二设备中的部件(如芯片或芯片系统等)执行，第二设备为终端设备，本申请对此不作限定。该方法包括：第二设备在N个正交频分复用OFDM符号上接收来自第一设备的第一信号，该N个OFDM符号包括N1个第一符号，其中N为大于或等于1的整数，N1＜N。
基于上述方案，可以在现有通信系统中引入类似RFID和WUR的技术，使得承载第一信号的第一符号所对应的资源元素RE可以承载发送至第三设备(与第二设备的能力不同)的第二信号(例如下行控制信息，物理下行共享信道，参考信号，同步信号，广播信号中的一项或多项)，提升频谱效率。
结合第四方面，在第四方面的某些实现方式中，该N个OFDM符号还包括N2个第二符号，N2+N1＝N。
基于上述方案，可以在第二符号上配置一些零功率或相比第一符号功率低的信号，能够进一步提升频谱效率。
结合第四方面，在第四方面的某些实现方式中，该第一符号为开关键控调制或者多载波开关键控调制对应的ON符号。
结合第四方面，在第四方面的某些实现方式中，该第二符号为开关键控调制或者多载波开关键控调制对应的OFF符号。
结合第四方面，在第四方面的某些实现方式中，该N1个第一符号的功率相同。
基于上述方案，可以避免在N1个ON符号上的功率不同，且在某一个ON符号的功率较低的情况下，该ON符号被第二设备误认为是OFF符号，从而影响第二设备对ON OFF符号的解调性能。
结合第四方面，在第四方面的某些实现方式中，该N个OFDM符号至少包括4个连续的该第一符号。
基于上述方案，可以在4个连续的ON符号对应的RE上承载SSB，以提升频谱效率。
结合第四方面，在第四方面的某些实现方式中，该第一信号的前导序列所占的OFDM符号个数为一个时隙内OFDM符号个数的整数倍。
基于上述方案，可以在上述N个OFDM符号的ON符号对应的RE上承载PDSCH，以提升频谱效率。
第五方面，提供了一种发送信号的装置。该装置可以是第一设备，或者，也可以是配置在第一设备中的部件(如芯片或芯片系统等)，第一设备可以是网络设备，也可以是终端设备，本申请对此不作限定。该装置包括：收发单元，该收发单元用于在N个正交频分复用OFDM符号上向第二设备发送第一信号，该N个OFDM符号包括N1个第一符号，其中N为大于或等于1的整数，N1＜N，该收发单元还用于在该N1个第一符号中的至少一个第一符号上向第三设备发送第二信号。
基于上述方案，第一设备能够利用现有通信系统中的下行信号生成发送至第二设备的第一信号，并且能够利用承载第一信号的第一符号所对应的资源元素RE承载发送至第三设备(与第二设备的能力不同)的第二信号，可以实现在现有通信系统中引入类似RFID和WUR的技术，并且能够节省网络资源开销。
结合第五方面，在第五方面的某些实现方式中，该N个OFDM符号还包括N2个第二符号，该N2个第二符号中的至少一个第二符号承载第一设备配置给第三设备的零功率信道状态信息参考信号，或者，该N2个第二符号中的至少一个第二符号被第一设备配置为不用于传输第三设备对应的下行信号的资源，其中，N2+N1＝N。
结合第五方面，在第五方面的某些实现方式中，该N1个第一符号的功率相同。
结合第五方面，在第五方面的某些实现方式中，该第一符号为开关键控调制或者多载波开关键控调制对应的ON符号。
结合第五方面，在第五方面的某些实现方式中，该第二符号为开关键控调制或者多载波开关键控调制对应的OFF符号。
结合第五方面，在第五方面的某些实现方式中，该N个OFDM符号至少包括4个连 续的该第一符号。
结合第五方面，在第五方面的某些实现方式中，该4个连续的该第一符号上承载同步信号和/或广播信号。
结合第五方面，在第五方面的某些实现方式中，该第一信号的前导序列所占的OFDM符号个数为一个时隙内OFDM符号个数的整数倍。
结合第五方面，在第五方面的某些实现方式中，该第二信号包括以下至少一项：下行控制信息；物理下行共享信道；参考信号；同步信号；广播信号。
结合第五方面，在第五方面的某些实现方式中，当该第二信号包括下行控制信息时，该下行控制信息为不调度数据的下行控制信息。
结合第五方面，在第五方面的某些实现方式中，该收发单元在N个OFDM符号上向第二设备发送第一信号前，已向第三设备发送了半静态配置信令，并且该半静态配置信令配置的第一资源已被激活，该第一资源包括该N个OFDM符号，该收发单元还用于在N个OFDM符号上向第二设备发送第一信号前，向第三设备发送去激活信息，该去激活信息用于去激活该第一资源。
第六方面，提供了一种发送信号的装置。该装置可以是第二设备，或者，也可以是配置在第二设备中的部件(如芯片或芯片系统等)，第二设备可以是终端设备，本申请对此不作限定。该装置包括收发单元，该收发单元用于在N个正交频分复用OFDM符号上接收来自第一设备的第一信号，该N个OFDM符号包括N1个第一符号，该N1个第一符号中的至少一个第一符号上承载该第一设备向第三设备发送的第二信号，其中N为大于或等于1的整数，N1＜N。
基于上述方案，第二设备接收的第一信号可以基于现有通信系统中的下行信号生成，并且第一信号的第一符号所对应的资源元素RE还可以承载发送至第三设备(与第二设备的能力不同)的第二信号，实现在现有通信系统中引入类似RFID和WUR的技术，并且能够节省网络资源开销。
结合第六方面，在第六方面的某些实现方式中，该N个OFDM符号还包括N2个第二符号，该N2个第二符号中的至少一个OFDM符号承载第一设备配置给第三设备的零功率信道状态信息参考信号，或者，该N2个第二符号中的至少一个第二符号被第一设备配置为不用于传输第三设备对应的下行信号的资源，其中，N2+N1＝N。
结合第六方面，在第六方面的某些实现方式中，该N1个第一符号的功率相同。
结合第六方面，在第六方面的某些实现方式中，该第一符号为开关键控调制或者多载波开关键控调制对应的ON符号。
结合第六方面，在第六方面的某些实现方式中，该第二符号为开关键控调制或者多载波开关键控调制对应的OFF符号。
结合第六方面，在第六方面的某些实现方式中，该N个OFDM符号至少包括4个连续的该第一符号。
结合第六方面，在第六方面的某些实现方式中，该4个连续的该第一符号上承载同步信号和/或广播信号。
结合第六方面，在第六方面的某些实现方式中，该第一信号的前导序列所占的OFDM符号个数为一个时隙内OFDM符号个数的整数倍。
结合第六方面，在第六方面的某些实现方式中，该第二信号包括以下至少一项：下行控制信息，物理下行共享信道，参考信号，同步信号，广播信号。
结合第六方面，在第六方面的某些实现方式中，当该第二信号包括下行控制信息时，该下行控制信息为不调度数据的下行控制信息。
第七方面，提供了一种发送信号的装置。该装置可以是第一设备，或者，也可以是配置在第一设备中的部件(如芯片或芯片系统等)，第一设备可以是网络设备，也可以是终端设备，本申请对此不作限定。该装置包括：收发单元，该收发单元用于在N个正交频分复用OFDM符号上向第二设备发送第一信号，该N个OFDM符号包括N1个第一符号，其中N为大于或等于1的整数，N1＜N。
基于上述方案，可以在现有通信系统中引入类似RFID和WUR的技术，使得第一设备能够利用承载第一信号的第一符号所对应的资源元素RE承载发送至第三设备(与第二设备的能力不同)的第二信号(例如下行控制信息，物理下行共享信道，参考信号，同步信号，广播信号中的一项或多项)，提升频谱效率。
结合第七方面，在第七方面的某些实现方式中，该N个OFDM符号还包括N2个第二符号，N2+N1＝N。
基于上述方案，第一设备能够在第二符号上配置一些零功率或相比第一符号功率低的信号，能够进一步提升频谱效率。
结合第七方面，在第七方面的某些实现方式中，该第一符号为开关键控调制或者多载波开关键控调制对应的ON符号。
结合第七方面，在第七方面的某些实现方式中，该第二符号为开关键控调制或者多载波开关键控调制对应的OFF符号。
结合第七方面，在第七方面的某些实现方式中，该N1个第一符号的功率相同。
结合第七方面，在第七方面的某些实现方式中，该N个OFDM符号至少包括4个连续的该第一符号。
结合第七方面，在第七方面的某些实现方式中，该第一信号的前导序列所占的OFDM符号个数为一个时隙内OFDM符号个数的整数倍。
第八方面，提供了一种发送信号的装置。该装置可以是第二设备，或者，也可以是配置在第二设备中的部件(如芯片或芯片系统等)，第二设备可以是终端设备，本申请对此不作限定。该装置包括收发单元，该收发单元用于在N个正交频分复用OFDM符号上接收来自第一设备的第一信号，该N个OFDM符号包括N1个第一符号，其中N为大于或等于1的整数，N1＜N。
基于上述方案，可以在现有通信系统中引入类似RFID和WUR的技术，使得承载第一信号的第一符号所对应的资源元素RE可以承载发送至第三设备(与第二设备的能力不同)的第二信号(例如下行控制信息，物理下行共享信道，参考信号，同步信号，广播信号中的一项或多项)，提升频谱效率。
结合第八方面，在第八方面的某些实现方式中，该N个OFDM符号还包括N2个第二符号，N2+N1＝N。
基于上述方案，可以在第二符号上配置一些零功率或相比第一符号功率低的信号，能够进一步提升频谱效率。
结合第八方面，在第八方面的某些实现方式中，该第一符号为开关键控调制或者多载波开关键控调制对应的ON符号。
结合第八方面，在第八方面的某些实现方式中，该第二符号为开关键控调制或者多载波开关键控调制对应的OFF符号。
结合第八方面，在第八方面的某些实现方式中，该N1个第一符号的功率相同。
结合第八方面，在第八方面的某些实现方式中，该N个OFDM符号至少包括4个连续的该第一符号。
结合第八方面，在第八方面的某些实现方式中，该第一信号的前导序列所占的OFDM符号个数为一个时隙内OFDM符号个数的整数倍。
第九方面，提供一种通信装置，该装置包括处理器，该处理器与存储器耦合，可用于执行存储器中的指令，以实现上述第一方面或第三方面，或，第一方面或第三方面中任一种可能实现方式中的方法。可选地，该装置还包括存储器，该存储器与处理器可能是分离部署的，也可能是集中部署的。可选地，该装置还包括通信接口，处理器与通信接口耦合。
在一种实现方式中，该通信接口可以是收发器，或，输入/输出接口。
在另一种实现方式中，该装置为配置于第一设备中的芯片。当该装置为配置于第一设备中的芯片时，该通信接口可以是该芯片或芯片系统上的输入/输出接口、接口电路、输出电路、输入电路、管脚或相关电路等。该处理器也可以体现为处理电路或逻辑电路。
可选地，该收发器可以为收发电路。可选地，所述输入/输出接口可以为输入/输出电路。
在具体实现过程中，上述处理器可以为一个或多个芯片，输入电路可以为输入管脚，输出电路可以为输出管脚，处理电路可以为晶体管、门电路、触发器和各种逻辑电路等。输入电路所接收的输入的信号可以是但不限于接收器接收并输入的，输出电路所输出的信号可以是但不限于输出给发射器并由发射器发射的，且输入电路和输出电路可以是同一电路，该电路在不同的时刻分别用作输入电路和输出电路。本申请实施例对处理器及各种电路的具体实现方式不做限定。
第十方面，提供一种通信装置，该装置包括处理器，该处理器与存储器耦合，可用于执行存储器中的指令，以实现上述第二方面或第四方面，或，第二方面或第四方面中任一种可能实现方式中的方法。可选地，该装置还包括存储器，该存储器与处理器可能是分离部署的，也可能是集中部署的。可选地，该装置还包括通信接口，处理器与通信接口耦合。
在一种实现方式中，该通信接口可以是收发器，或，输入/输出接口。
在另一种实现方式中，该装置为配置于第二设备中的芯片。当该装置为配置于第二设备中的芯片时，该通信接口可以是该芯片或芯片系统上的输入/输出接口、接口电路、输出电路、输入电路、管脚或相关电路等。该处理器也可以体现为处理电路或逻辑电路。
可选地，该收发器可以为收发电路。可选地，所述输入/输出接口可以为输入/输出电路。
在具体实现过程中，上述处理器可以为一个或多个芯片，输入电路可以为输入管脚，输出电路可以为输出管脚，处理电路可以为晶体管、门电路、触发器和各种逻辑电路等。输入电路所接收的输入的信号可以是但不限于接收器接收并输入的，输出电路所输出的信号可以是但不限于输出给发射器并由发射器发射的，且输入电路和输出电路可以是同一电 路，该电路在不同的时刻分别用作输入电路和输出电路。本申请实施例对处理器及各种电路的具体实现方式不做限定。
第十一方面，提供一种通信装置，该装置包括逻辑电路，该逻辑电路用于与输入/输出接口耦合，通过该输入/输出接口传输数据，以执行上述第一方面至第四方面中的任一方面，以及第一方面至第四方面中任一种可能实现方式中的方法。
第十二方面，提供了一种计算机可读存储介质，该计算机可读存储介质存储有计算机程序(也可以称为代码，或指令)当其在计算机上运行时，使得计算机执行上述第一方面至第四方面中的任一方面，以及第一方面至第四方面中任一种可能实现方式中的方法。
第十三方面，提供了一种计算机程序产品，该计算机程序产品包括：计算机程序(也可以称为代码，或指令)，当该计算机程序被运行时，使得计算机执行上述第一方面至第四方面中的任一方面，以及第一方面至第四方面中任一种可能实现方式中的方法。
第十四方面，提供了一种通信系统，该通信系统包括上述第一设备和第二设备，可选地，该通信系统还包括第三设备。
上述第五方面至第十四方面带来的有益效果具体可以参考第一方面至第四方面中有益效果的描述，此处不再赘述。
附图说明
图1是本申请实施例提供的一种通信系统的示意图。
图2是本申请提供的Passive IoT下行通信方法示意图。
图3是本申请提供的Passive IoT上行通信方法示意图。
图4是本申请实施例提供的一种发送信号的方法的流程交互图。
图5是本申请实施例提供的发送的第二信号为DCI时的示意图。
图6是本申请实施例提供的发送的第二信号为SSB时的示意图。
图7是本申请实施例提供的发送的第二信号为PDSCH时的示意图。
图8是本申请实施例提供的去激活半静态配置信令配置的资源的示意图。
图9是本申请实施例提供的另一种发送信号的方法的流程交互图。
图10是本申请实施例提供的一种通信装置的示意性框图。
图11是本申请实施例提供的另一种通信装置的示意性框图。
图12是本申请实施例提供的一种通信装置的结构示意图。
图13是本申请实施例提供的另一种通信装置的结构示意图。
图14是本申请实施例提供的又一种通信装置的结构示意图。
具体实施方式
下面将结合附图，对本申请实施例中的技术方案进行描述。
图1是本申请实施例提供的一种通信系统的示意图。
如图1所示，第一设备10，第二设备11，和第三设备12组成一个通信系统，应理解，在图1中，第一设备10，第二设备11，和第三设备12的数量仅为举例，本申请对此不做限制。在该通信系统中，第一设备10与第二设备11之间可以传输信号，第一设备10与第三设备12之间可以传输信号，第二设备11与第三设备12之间也可以传输信号。
示例地，第一设备10可以是网络设备，也可以是终端设备，第一设备可以是低能力终端设备，也可以是高能力终端设备。第二设备11为低能力终端设备，第三设备12为高能力终端设备。
例如，第二设备11为支持反射通信(例如支持被动物联网通信)的终端设备，第三设备12为不支持反射通信(例如不支持被动物联网通信)的终端设备，第二设备11支持数据传输速率要求较低的业务，第三设备12支持数据传输速率要求较高的业务。或者说第二设备11与第三设备12相比，复杂度或能力低，例如第二设备11可能在支持的带宽、功耗、天线数等方面比第三设备12复杂度低一些，如支持的带宽更窄、功耗更低、天线数更少等。
第三设备12也可称为NR正常终端设备，或者传统能力或/正常能力/高能力的终端设备，也可以称为传统(legacy)终端设备。
具体地，第三设备12和第二设备11之间的区别包括如下至少一项：
1、带宽能力不同。第三设备支持的最大带宽可以大于第二设备支持的最大带宽。例如，第三设备最大可以支持在一个载波上同时使用5MHz-100MHz频域资源和网络设备进行通信，第二设备最大可以支持在一个载波上同时使用180kHz或者几个180kHz的频域资源和网络设备进行通信。
2、收发天线个数不同。第三设备的天线配置可以大于第二设备的天线配置。例如，第三设备支持的最小天线配置可以大于第二设备支持的最大天线配置。举例来说，第三设备12可以支持4收2发(4个接收天线和2个发送天线)。第二设备可以支持1收1发(1个接收天线和1个发送天线)。可以理解的是，在实现相同的数据传输速率的条件下，由于第二设备的收发天线个数少于第三设备的收发天线个数，因此第二设备与网络设备之间的数据传输所能实现的最大覆盖范围小于第三设备与网络设备之间的数据传输所能实现的最大覆盖范围。
3、上行最大发射功率不同。第三设备的上行最大发射功率大于第二设备的上行最大发射功率。
4、协议版本不同。第三设备可以是NR版本15(release-15，Rel-15)或NR版本16(release-16，Rel-16)或NR版本17(release-17，Rel-17)中的终端设备。第二设备可以认为是NR版本18(release-18，Rel-18)或者NR Rel-18以后版本中的终端设备。
5、载波聚合(carrier aggregation，CA)能力不同。例如，第三设备可以支持载波聚合，而第二设备不支持载波聚合；又例如，第二设备与第三设备都支持载波聚合，但是第三设备同时支持的载波聚合的最大小区个数大于第二设备同时支持的载波聚合的最大小区个数。
6、频分双工(frequency division duplex，FDD)能力不同。例如，第三设备支持全双工FDD，而第二设备仅支持半双工FDD。
7、对数据的处理时间能力不同，例如，第三设备接收下行数据与发送对该下行数据的反馈之间的最小时延，小于第二设备接收下行数据与发送对该下行数据的反馈之间的最小时延。和/或，第三设备发送上行数据与接收对该上行数据的反馈之间的最小时延，小于第二设备发送上行数据与接收对该上行数据的反馈之间的最小时延。
8、处理能力(ability/capability)不同。例如，第三设备的基带处理能力高于第二设 备的基带处理能力。其中，基带处理能力可以包括以下至少一项：终端设备进行数据传输时支持的最大MIMO层数，终端设备支持的HARQ进程数目，终端设备支持的最大传输块大小(transmission block size，TBS)。
9、上行和/或下行的传输峰值速率不同。传输峰值速率是指终端设备在单位时间内(例如每秒)能够达到的最大数据传输速率。第三设备支持的上行峰值速率可以高于第二设备支持的上行峰值速率，和/或第三设备支持的下行峰值速率可以低于第二设备支持的下行峰值速率。例如，第三设备的上行峰值速率大于或等于50Mbps，下行峰值速率大于或等于150Mbps，第二设备的上行峰值速率小于或等于50Mbps，下行峰值速率小于或等于150Mbps。又例如，第三设备的上行峰值速率或下行为百Mbps量级，第二设备的上行峰值速率或下行峰值速率为Gbps量级。
10、缓存(buffer)大小不同。第三设备的缓存大于第二设备的缓存。缓存可以理解为层2(Layer 2，L2)缓存总大小，其定义为终端设备对于所有无线承载，在无线链接控制(radio link control，RLC)发送窗和接收以及重排序窗中缓存的字节数与在数据包汇聚协议(packet data convergence protocol，PDCP)重排序窗中缓存的字节数之和。或者，缓存也可以理解为混合自动重传请求(hybrid automatic repeat request，HARQ)处理所能使用的软信道比特总数。
11、接收机架构不同。第三设备的接收机有高频晶振，可以在本地生成载波，进行相干解调。第二设备的接收机没有高频晶振，不可以在本地生成载波，只能进行非相干解调，比如包络检波。
12、上行通信方式不同。第三设备可以主动生成高频载波，第二设备上行通过反射通信的方式，不可以生成高频载波，只能通过接收下行的连续载波，对连续载波进行调制并反射来进行数据传输。
13、接收机功耗不同。第三设备对应的接收功率为毫瓦特(milliwatt，mW)量级，第二设备对应的接收功率为毫瓦特(milliwatt，mW)量级。
14、调制方式不同。第三设备支持的调制方式为相移键控(phase shift keying,PSK)或正交幅度调制(quadrature amplitude modulation,QAM)，第二设备支持的调制方式为幅移键控(amplifier shift keying,ASK)或频移键控(frequency shift keying,FSK)或开关键控(on-off keying,OOK)。
15、编码方式不同。第三设备支持的编码方式为极化(polar)码，或低密度奇偶校验(low density parity check,LDPC)码，或咬尾卷积(tail biting convolutional code,TBCC)码，涡轮(turbo)码，或里德-穆勒(reed-muller)码。第二设备支持的编码方式为曼侧斯特(manchester)码，或密勒(miller)编码，或FM0(即bi-phase space)编码，或PIE(pulse interval encoding，脉冲宽度编码)编码。
或者，例如，第二设备11为支持WUR的终端设备，第三设备12为不支持WUR的终端设备，此时第二设备11与第三设备12的区别，不包括上述15点区别中关于上行相关的描述，其余区别都相同，在此不做赘述。
本申请中的终端设备也可以称为终端、接入终端、用户设备、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、无线通信设备、用户代理或用户装置。本申请的实施例中的终端可以是手机(mobile phone)、平板电脑(pad)、带无 线收发功能的电脑、虚拟现实(virtual reality，VR)终端、增强现实(augmented reality，AR)终端、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网络中的终端或者未来演进网络中的终端等。
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。
本申请中的网络设备也可以称为无线接入网设备(radio access network，RAN)，能够管理无线资源。主要是提供无线接入服务，调度无线资源给接入的终端设备，提供可靠的无线传输协议和数据加密协议等，并能够完成终端设备数据在终端设备和核心网之间的转发。
示例性地，本申请实施例中的网络设备可以是用于与用户设备通信的任意一种具有无线收发功能的通信设备，可以是部署在卫星上的网络设备，也可以是部署在地面上的网络设备。该网络设备包括但不限于：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(home evolved nodeB，HeNB，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、媒体接入控制(media 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。RRC层的信息由CU生成，最终会经过DU的PHY层封装变成PHY层信息，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，本申请对此不做限定。
本申请实施例的技术方案可以应用于各种通信系统，例如：全球移动通信(global system formobile communications，GSM)系统、码分多址(code division multiple access，CDMA)系统、宽带码分多址(wideband code division multiple access，WCDMA)系统、通用分组无线业务(general packet radio service，GPRS)、LTE系统、高级的长期演进(LTE advanced，LTE-A)系统，LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、通用移动通信系统(universal mobile telecommunication system，UMTS)、全球互联微波接入(worldwide interoperability for microwave access，WiMAX)通信系统、5G系统或未来演进的通信系统，车到其它设备(vehicle-to-X V2X)，其中V2X可以包括车到互联网(vehicle to network，V2N)、车到车(vehicle to vehicle，V2V)、车到基础设施(vehicle to infrastructure，V2I)、车到行人(vehicle to pedestrian，V2P)等、车间通信长期演进技术(long term evolution-vehicle，LTE-V)、车联网、机器类通信(machine type communication，MTC)、物联网(Internet of things，IoT)、机器间通信长期演进技术(long term evolution-machine，LTE-M)，机器到机器(machine to machine，M2M)等。
为更好的理解本申请实施例，首先介绍一下本申请背景技术中提到的RFID和WUR技术。
1、RFID技术
RFID技术是一种非接触式的自动识别技术。它通过射频信号自动识别目标对象并获取相关数据，识别工作无须人工干预。
通常情况下RFID系统有阅读器(reader)和标签(tag)组成。在无源(batter free)RFID中，阅读器通过向标签发送激励信号为标签充能，也就是说标签通过接收阅读器发送的微波信号，通过微波信号激励标签中的电磁感应线圈获取能量，来驱动标签中的芯片工作，并通过反射信号向阅读器发送数据，通过这种方式阅读器可以识别标签的身份标识(identification，ID)，以及对标签进行读写等操作。从而完成对标签进行读写数据。因为无源RFID中省去了电源模块，所以无源RFID产品的体积可以达到厘米量级甚至更小，而且自身结构简单，成本低，故障率低，使用寿命较长。
2、WUR技术
在无线通信系统中，站点设备大部分能量浪费在信道监听，即当站点无消息收发时，若站点设备持续监听信道，则会消耗大量的能量。为了减少能量的浪费，同时避免站点设备处于休眠状态太长导致运行缓慢，因此，站点设备必须能够在低功耗、低延迟状态下运行。WUR架构应运而生，其核心思想是：接收端设备除包含传统的主收发模块即主无线电(mainradio，简称MR)外，新增低功耗唤醒接收机(wakeupreceiver,WuRx)部分，该传统的收发模块即为802.11主无线电(mainradio，MR)。因为WuRx的功耗比传统的低功耗还要低几个数量级，因此WuRx可以一直运行。
示例地，当第一设备和第二设备之间无数据进行传输时，第二设备中的MR进入深度 休眠，低功耗的WuRx开始工作，WuRx用于监听信道。在这种情况下，MR保持在深睡眠或关闭模式，直到WuRx唤醒它为止。
示例地，当第一设备和第二设备之间有数据进行传输时，第一设备首先给WuRx发送唤醒数据分组(wakeuppacket，简称WuP)，一直开启的WuRx正确收到发给自己的WuP后，对MR的微控制器产生一个中断将它从睡眠切换到主动模式，从而达到唤醒第二设备的MR。随后，MR的微控制器打开主无线电收发机，以常规方式与第一设备进行通信。当MR与第一设备通信完成后将重新进入休眠，同时wurx又开始侦听是否有发送给自己的WuP，以便再次唤醒MR。该技术采用了低功耗的WuRx代替主收发模块侦听信道，有效降低了设备在监听时能量的浪费。
在一种实施方式中，唤醒机的信息比特被调制成开关键(on-off keying，OOK)符号，OOK符号包括ON符号和OFF符号，其中ON符号的幅度为非0，OFF符号的幅度为0。发射端设备利用这些OOK符号来屏蔽生成的窄带正交频分复用(orthogonal frequency division multiplexing，OFDM)波形(即OOK波形)，从而进一步优化OOK波形，OOK符号承载在13个子载波上，在无线局域网标准IEEE 802.11ba中称为多载波(multicarrier，MC)OOK。在接收端设备侧，OOK解调不需要频域和时域上的任何信道均衡，因此接收端设备通过唤醒接收机进行非相干检测(如包络检测)进行监听。使用非相干检测，接收端设备不需要保持/跟踪高精度的振荡速率。因此，可以避免锁相环，进一步降低接收侧功耗。
随着IoT的普及，越来越多的IoT设备已经部署在人们的生活中。例如：智能水表、共享单车，以及智慧城市、环境监测、智能家居、森林防火等以传感和数据采集为目标的设备等等。而未来，IoT设备将是无处不在的，可能会嵌入每一件衣服、每一个包裹、每一把钥匙，几乎所有的离线物品都将在物联网技术的赋能下实现在线。但与此同时，由于IoT设备分布范围广泛、数量众多，所以实现万物互联的过程也给产业界带来了不小的挑战，首当其冲的便是供电问题。目前，IoT仍然主要由运营商推动，IoT模块需要使用标准蜂窝协议与基站通讯。由于基站需要覆盖尽可能大的面积，因此IoT模块需要能做到在距离基站很远时仍能进行通信，这就使得IoT设备在无线通信时仍然需要消耗高达30mA的电流，所以目前的IoT模块仍然需要使用较高容量的电池才能工作，这也导致了IoT模块的尺寸很难做小，增加了IoT设备的成本。
此外，一些低功耗终端在医疗、智能家居、工业传感器、可穿戴设备等物联网应用中发挥着重要作用。然而，由于这类终端尺寸大小有限，如果要延长这些设备的运行时间，很难通过简单的提高电池容量来实现。因此，要实现延长终端续航时间，需降低无线通信的功耗，其中，无线电收发器则是最耗电的组件之一。
因此，为了能进一步普及IoT，把IoT模块植入人体内，或者更小的物件中，则不可能再搭配较高容量的电池，而必须使用更小的电池甚至彻底摆脱电池的限制，或者是设计一种降低无线电收发器功耗的方法，进而来克服IoT设备的成本、尺寸、功耗等的限制问题。因此，2021年6月，在第三代合作伙伴计划(3rd generation partnership project，3GPP)在组织R18潜在研究方向讨论会中，讨论了物联网增强技术，且披露了5G演进(5G-advanced)将从R18开始，在5G NR系统中引入Passive IoT和WUR技术。
针对NR系统中应用的RFID技术，可以称作无源或被动(Passive)IoT，后文描述中 以被动IoT为主，应理解，本申请对该名称不做限制。
Passive IoT是从目前大量且成熟使用RFID技术中得出启发后应运而生，与RFID的传输机制类似。在Passive IoT中，Passive IoT设备可以是无源的，即Passive IoT设备自身不配备或不主要依赖于电池或者有线电源来供电。但是，Passive IoT设备不具备电源模块并不意味着不需要用电，Passive IoT设备可以从环境光、热量、射频中获取能量，从而支撑起物联网数据的感知、无线传输和分布式的计算等等。Passive IoT设备也可以是储能无源的，还可以是半无源的。储能无源设备有储能设备。半无源设备有电池，但电池供电仅对标签内要求供电维持数据的电路或者标签芯片工作所需电压的辅助支持，本身耗电很少的标签电路供电，电池尺寸也相对较小。
图2和图3示出Passive IoT通信中的上下行通信方法示意图。
如图2所示，图2示出Passive IoT下行通信方法示意图。
第一设备通过下行链路向第二设备发送调幅信号，第二设备接收该调幅信号，可以采用包络检波器，对该调幅信号进行包络检波，获取其中的低频信号。
上述包络检波是指：从调幅信号中将低频信号解调出来的过程，广义的检波通常称为解调，是调制的逆过程，即从已调信号提取调制信号的过程。对调幅信号来说，包络检波就是从它的振幅变化中提取调制信号的过程。其中，包络是反映一个高频信号的幅度变化曲线，当用一个低频信号对一个高频信号进行幅度调制时，低频信号就成了高频信号的包络线。
包络检波器的主要组成部分包括图2所示的二极管和RC振荡电路。包络检波常用的方法是采用二极管进行单向过滤后再进行低通滤波。低通滤波器即图2所示的RC振荡电路。其中，二极管的作用是，以防在低通滤波时使正、负包络线抵消，从而检测不出低频信号。
可以理解的是，图2所示出的包络检波电路为最传统的基础电路结构示意图，关于包络检波电路的演进结构，在此在暂不赘述。本申请实施例对第二设备采用的包络检波电路结构不作限制。
如图3所示，图3示出Passive IoT上行通信方法示意图。
示例地，第二设备为Passive IoT设备，这里以passive IoT设备为无源设备为例，因此第二设备自身无法提供电源，也无条件连接有线电源，来供Passive IoT设备进行数据传输。所以第二设备需要从外接环境中获取能量，进而提供Passive IoT设备进行数据传输，以及数据处理等其他操作。
具体的，当第二设备接收第一设备发出的载波信号，可以利用空间中产生的电磁场得到的能量，驱动芯片将自身存储的信息传送出去。
在上述实现方法中，第一设备和第二设备的关系为“电磁反向散射耦合”关系，“电磁反向散射耦合”是指利用电磁波的空间传播规律，当发射的电磁波接触到被测物体后，携带着被测物体的信息被反射回来。这种耦合适合用在高频、微波工作的远距离射频识别系统。
可以理解的是，图3所示的Passive IoT通信中上行通信方法仅为示例，Passive IoT设备还可以通过获取环境光、热等能量，来驱动芯片将自身存储的信息传送出去。或者，第二设备也可以是储能无源设备或者半无源设备。
如前文所述IEEE 802.11ba中唤醒多载波OOK(multicarrierOOK，MC-OOK)调制，ON符号和OFF符号生成时，OFDM符号对应的子载波并没有承载信息，为了保证覆盖性能，信息比特可能会对应更多编码比特，或者，引入比特重复。大量的ON符号和OFF符号会占用较多的网络资源开销，OFDM符号对应的子载波不承载信息会导致频谱效率较低。并且目前Passive IoT通信也没有具体的可以实施的通信机制。
鉴于此，如图4所示，本申请提出一种发送信号的方法200，通过现有的NR系统或LTE系统中已有的信号生成第一信号，实现在NR系统或LTE系统中支持Passive IoT或WUR通信，当然，本申请的方案也适用于上述提到的其他通信系统。方法200包括：
步骤S210，第一设备向第二设备发送第一信号，该第一信号承载于N个正交频分复用OFDM符号上，其中N个OFDM符号包括N1个第一符号，N为大于或等于1的整数，N1＜N。并且，在该N1个第一符号中的至少一个第一符号上承载了第一设备向第三设备发送的第二信号。对应的，第二设备接收该第一信号，第三设备接收该第二信号。
其中，第一信号可以是前导序列和/或数据。前导序列的功能可以包括以下至少一项：自动增益控制(automatic gain control,AGC)，时间同步，频率同步，数据包检测，边界检测，速率指示。AGC用于通过调整接收信号的强度减少失真。时间同步用于通过获取正确的定时或采样定时减少非相干间隔的误差。边界检测用于检测前导序列和/或控制信息的边界。速率指示用于指示不同的数据传输速率。前导序列位于数据之前，用于传输前导序列的时域资源和用于传输数据的时域资源可以是连续的，也可以是不连续的。这里的数据指的是该前导序列对应的数据。
第一信号对应的二进制序列中的每个元素对应该N个OFDM符号中的一个OFDM符号。或者第一信号对应的编码比特序列中的每个元素对应该N个OFDM符号中的一个OFDM符号。对于第一信号，在一个OFDM符号上可以映射该二进制序列的一个元素，或者，在一个OFDM符号上可以映射该编码序列的一个元素。其中二进制序列指的是由二进制数0(或称为比特0)和/或二进制数1(或称为比特1)组成的序列，编码比特序列指的是由二进制数0(或称为比特0)和/或二进制数1(或称为比特1)组成的序列，应理解，序列中的一个二进制数即为1个元素，例如“0”或“1”为该序列的1个元素。二进制序列，或者编码比特序列用数学形式可以表示为{a 0,a 1,a 2,…,a n-1}，a i为这个序列的一个元素，a i为一个二进制数，其中i＝0,1,2,…,n-1，该二进制序列，或者编码比特序列中包含的元素个数为n。需要说明的是，第一信号包括前导序列时，该前导序列对应的二进制序列不需要编码，第一信号包括数据时，该数据对应的信息比特需要编码。
第二信号对应的复数序列或非二进制实数序列中的每个元素映射到一个资源元素(resource element，RE)上，或者，第二信号对应的经过编码调制后的复数序列中的元素映射到RE上，一个RE上映射一个元素。一个RE在时域上对应一个OFDM符号，在频域上对应一个子载波。因此一个OFDM符号上可以对应多个RE，即在一个OFDM符号上可以映射该第二信号对应的复数序列的多个不同的元素。复数序列的一个元素由a+b*j组成，其中a和b为实数，j为虚数单位，j的平方的取值为-1。非二进制实数序列的所有元素不全部为二进制数，非二进制实数序列的每个元素为实数，例如由若干个1和若干个-1组成的序列可以是一个非二进制实数序列。例如上述非二进制实数序列，或者复数序列，或者经过编码调制后的复数序列用数学形式可以表示为{b 0,b 1,b 2,…,b m-1}，b i为这个序列 的一个元素，b i为一个非二进制实数或复数，其中i＝0,1,2,…,m-1，该序列中包含的元素个数为m。
可选地，第一信号的调制方式和第二信号的调制方式不同。第一信号的调制方式为OOK调制，ASK调制，或FSK调制。第二信号的调制方式为二进制相移键控(binary phase shift keying，BPSK)，正交相移键控(quadrature phase shift keying，QPSK)，16正交幅度调制(quadrature amplitude modulation，QAM)，64QAM，256QAM，1024QAM等。
可选地，第一信号的编码方式和第二信号的编码方式不同。第一信号的编码方式为曼侧斯特(manchester)码，或密勒(miller)编码，或FM0(即bi-phase space)编码，或PIE(pulse interval encoding，脉冲宽度编码)编码。第二信号的编码方式为极化(polar)码，低密度奇偶校验(low density parity check,LDPC)码，或咬尾卷积(tail biting convolutional code,TBCC)码，或涡轮(turbo)码，或里德-穆勒(reed-muller)码。
可选地，该N个OFDM符号还包括N2个第二符号，该N2个第二符号中的至少一个第二符号承载该第一设备配置给该第三设备的零功率信道状态信息参考信号，或者，该N2个第二符号中的至少一个第二符号被第一设备配置为不用于传输第三设备对应的下行信号的资源，或者，该N2个第二符号中的至少一个第二符号承载第一设备发送给第三设备的第三信号，其中，N2+N1＝N，该第三设备对应的下行信号可以是本申请实施例中对第二信号的任一示例，具体可参考对第二信号的描述，在此不再赘述。
需要说明的是，上述第三信号满足上述第二信号的特征，这里不再赘述，第三信号和第二信号的区别在于，第三信号的能量低于第二信号的能量，或者，第三信号的功率低于第二信号的功率，或者，第三信号的每资源元素的能量(energy per resource element,EPRE)低于第三信号的EPRE。
应理解，第一设备通过配置信息通知第三设备不用于下行传输的资源。该配置信息在NR系统中可以为速率匹配图案(RateMatchPattern)，具体可以见3GPP TS38.331 V16.6.0中6.3.2节中的信元RateMatchPattern。该配置信息在LTE系统中可以为预留资源配置信息，具体可以见3GPP TS36.331 V16.6.0中6.3.2节中的信元ResourceReservationConfig。该配置信息在窄带IoT(narrow band IoT，NB-IoT)系统中可以为预留资源配置信息，具体可以见3GPP TS36.331 V16.6.0中6.7.3.2节中的信元ResourceReservationConfig-NB。
可选地，用于传输该第一信号的该N个OFDM符号的天线端口相同。
可选地，用于传输该第一信号的该N个OFDM符号的循环前缀和/或子载波间隔相同。
可选地，用于传输该第一信号的该N个OFDM符号位于K个时间单元中，第一时间单元中用于传输第一信号的所有OFDM符号的天线端口相同，其中，第一时间单元为该K个时间单元中的一个或多个时间单元。例如，K为2，时间单元依次编号为0～1。第一时间单元为时间单元0，或时间单元1，在时间单元0内，用于传输第一信号的所有OFDM符号的天线端口相同。在时间单元1内，用于传输第一信号的所有OFDM符号的天线端口相同。时间单元0中用于传输第一信号的OFDM符号的天线端口和时间单元1中用于传输第一信号的OFDM符号的天线端口可以相同，也可以不同。应理解，上述时间单元可以是时隙，帧，子帧等。
一种可能的实施方式，第一符号为开关键控调制或者多载波开关键控调制对应的ON符号，第二符号为开关键控调制或者多载波开关键控调制对应的OFF符号。
可选地，第一符号与第二符号的区别包括以下至少一项：
第一符号上有数据/信令传输，第二符号上没有数据/信令传输；
第一符号为有能量传输的OFDM符号，第二符号为没有能量传输的OFDM符号；
在第一符号上，第一设备可以检测到能量高于某一门限值，在第二符号上，第一设备没有检测到能量高于某一门限值；
第一符号的能量高于第二符号的能量。
可选地，第一信号包括被动物联网的下行信号，或者WUR唤醒信号。
可选地，N1个第一符号的功率相同。也可以表述为，N1个第一符号的能量相同。还可以表述为，N1个第一符号的EPRE相同。
可选地，N1个第一符号中任意两个第一符号的功率差比较接近，或者说，N1个第一符号中任意两个第一符号的功率差的绝对值小于第一阈值。其中，该第一阈值小于或者等于N1个第一符号的功率的平均值。也可以表述为，N1个第一符号中任意两个第一符号的能量差比较接近，或者说，N1个第一符号中任意两个第一符号的能量差的绝对值小于第二阈值。其中，该第二阈值小于或者等于N1个第一符号的能量的平均值。还可以表述为，N1个第一符号中任意两个第一符号的能量差比较接近，或者说，N1个第一符号中任意两个第一符号的EPRE差的绝对值小于第三阈值。其中，该第三阈值小于或者等于N1个第一符号的EPRE的平均值。
应理解，考虑到不同的第三设备与第一设备的距离，和/或，不同第三设备与第一设备的信道条件并不一定相同，第一设备有可能会采用不同的功率在N1个ON符号上向不同的第三设备发送第二信号。但是，如果N1个ON符号上的功率不同，在某一个ON符号的功率较低的情况下，该ON符号有可能会被第二设备误认为是OFF符号，影响第二设备对ON OFF符号的解调性能。因此为了避免影响第二设备的解调性能，第一设备需要保证该N1个第一符号的功率相同。
具体地，第一设备可以通过调度信道条件类似的多个第三设备在该N1个ON符号上接收各自的第二信号，以使得各个ON符号上的功率相近或相同。或者，第一设备只调度一个第三设备在该N1个ON符号上接收第二信号，也可以使得各个ON符号上的功率相同。上述具体实施方式仅为示例，应理解，第一设备也可以通过其他的实施方式使得N1个ON符号的功率/能量相近或相同，本申请对此不做限制。
示例地，第一信号可以基于循环前缀OFDM(cyclic prefixOFDM，CP-OFDM)波形，采用MC-OOK调制。具体地，可以通过时间长度为2μs或4μs的OFDM符号承载第一信号。第一信号包括前导序列时，该前导序列对应的二进制序列不需要编码。第一信号包括数据时，该数据对应的信息比特需要编码。例如，第一信号包括数据时，假设该数据的信息比特为“10”，编码比特为“1001”，通过MC-OOK或OOK调制后，编码比特“1”生成ON符号，编码比特“0”生成OFF符号，即数据经编码调制后依次生成ON符号，OFF符号，OFF符号，ON符号。并且在调制过程中，在ON符号对应的RE上可以承载第一设备向第三设备发送的第二信号，在OFF符号对应的RE上可以承载零功率信道状态信息参考信号。
可选地，第二信号或第三信号包括以下至少一项：下行控制信息，物理下行共享信道，参考信号，同步信号，广播信号。
上述参考信号可以是NR系统中的以下参考信号的一种或多种：非零功率信道状态信息参考信号，物理下行共享信道(physical downlink shared channel，PDSCH)的解调参考信号(demodulation reference signal，DMRS)，PDSCH的相位跟踪参考信号(phase-tracking signal，PTRS)，物理下行控制信道(physical downlink control channel，PDCCH)的解调参考信号，PDCCH的相位跟踪参考信号，物理广播信道(physical broadcast channel，PBCH)的解调参考信号，远程干扰管理参考信号(remote interference management reference signal,RIM-RS)，定位参考信号(positioning reference signal)。上述参考信号的生成方法及映射方式具体可参见3GPP TS38.211 V16.7.0中7.4.1节中的描述。
上述参考信号可以是LTE系统中的以下参考信号的一种或多种：非零功率信道状态信息参考信号，小区参考信号(cell-specific reference signal，CRS)，多媒体广播多播单频网(multimedia broadcast multicast service single frequency network，MBSFN)参考信号，用户设备(user equipment，UE)特定参考信号，增强PDCCH(enhancedPDCCH，EPDCCH),机器类型PDCCH(machine type communicationPDCCH，MPDCCH)或者短PDCCH(shortPDCCH，SPDCCH)关联的解调参考信号，PBCH的解调参考信号，定位参考信号(positioning reference signal)，机器类型通信唤醒信号(MTC wake up signal,MWUS)。上述参考信号的生成方法及映射方式具体可参见3GPP TS36.211 V16.7.0中6.10节和6.11B节中的描述。
上述参考信号可以是NB-IoT系统中的以下参考信号的一种或多种：窄带参考信号(narrowband reference signal，NRS)，窄带定位参考信号(narrowband positioning reference signal,NPRS),窄带唤醒信号(narrowband wake up signal)。上述参考信号的生成方法及映射方式具体可参见3GPP TS36.211 V16.7.0中10.2.6节，10.2.6A和10.2.6B节中的描述。
一种可能的实施方式，第一设备在N1个ON符号中的至少一个符号上向第三设备发送第二信号，例如该第二信号为下行控制信息(downlink control information，DCI)，对应的，第三设备接收该DCI。
示例地，如图5所示，假设第一信号包括的前导序列的元素个数为32，该前导序列对应一个元素个数为32的二进制序列，即该前导序列的传输需要32个OFDM符号，该前导序列中的比特1对应ON符号，该前导序列中的比特0对应OFF符号。在本示例中该前导序列的传输需要16个ON符号和16个OFF符号。第一设备可以通过上述16个ON符号中的ON符号传输DCI，例如通过5个ON符号向多个第三设备传输DCI，该5个ON符号传输的DCI可以是发送至不同的第三设备的，如图5所示，多个第三设备包括：终端设备1#，终端设备2#，终端设备3#，终端设备4#。5个ON符号包括时隙0#的符号2，符号3(用于传输终端设备1#的DCI)；时隙1#的符号0(用于传输终端设备2#的DCI)，符号3(用于传输终端设备3#的DCI)；时隙2#的符号0(用于传输终端设备4#的DCI)。应理解，前导序列对应的二进制序列中比特0(对应OFF符号)和比特1(对应ON符号)的数量可以相同，也可以不同，图5仅为示例，本申请对此不做限定。
应理解，上述5个ON符号上传输的DCI的格式可以为NR支持的所有DCI格式。例如，DCI format 0_0，DCI format 1_0，DCI format 0_1，DCI format 1_1，DCI format 2_0，DCI format 2_1，DCI format 2_2,DCI format 2_3,DCI format 2_4，DCI format 2_5或DCI format 2_6或DCI format 3_0或DCI format 3_1等。上述DCI格式的功能如表1所示，上 述DCI格式承载的信息及对应的比特数见3GPP TS 38.212 V16.7.0中的7.3.1节。
表1
Figure PCTCN2022125894-appb-000001
应理解，上述5个ON符号上传输的DCI的格式可以为LTE支持的所有DCI格式，相应的DCI格式名称，DCI格式承载的信息及对应的比特数可参见3GPP TS 36.212 V16.6.0中的5.3.3.1节。上述5个ON符号上传输的DCI的格式可以为NB-IoT支持的所有DCI格式，相应的DCI格式名称，DCI格式承载的信息及对应的比特数可参见3GPP TS 36.212 V16.6.0中的6.4.3节。
在NR系统或LTE系统或NB-IoT系统中，DCI调度的上行数据和/或下行数据可能会占用多个连续的OFDM符号。如前所述，第一信号的调制方式通常为OOK调制，为了能够获取OOK调制ON符号或OFF符号的边界，第一信号应尽量避免采用连续的ON符号，或者，连续的OFF符号。
为了避免DCI调度的数据占用连续的OFDM符号，对第二设备获取第一信号中ON 符号或OFF符号边界的影响，优选地，DCI为不调度数据的DCI，比如，对于NR系统，该DCI的格式为DCI format 1_0，DCI format 2_0，DCI format 2_1，DCI format 2_2,DCI format 2_3,DCI format 2_4，DCI format 2_5或DCI format 2_6中的一种。对于LTE系统，该DCI的格式为DCI format 1A,DCI format 1C,DCI format 3,DCI format 3A，DCI format 3B，DCI format 6-1A，DCI format 6-1B，或DCI format 6-2中的一种。对于NB-IoT系统，该DCI的格式为DCI format N1或DCI format N2中的一种。
还应理解，上述图中关于第一信号的前导序列的元素个数，以及ON符号和OFF符号的个数以及排列仅为举例，对本申请不做任何限制，后文中的类似举例也是同样的，到时不再赘述。
一种可能的实施方式，上述N个OFDM符号至少包括4个连续的第一符号(例如ON符号)。
可选地，第一设备在该连续的4个第一符号向第三设备发送第二信号，例如第二信号为同步信号和/或广播信号，对应的，第三设备接收该第二信号。
示例地，如图6所示，假设第一信号的前导序列的元素个数为32，即该前导序列的传输需要占用32个OFDM符号，比特1对应ON符号，比特0对应OFF符号。则该前导的传输需要16个ON符号和16个OFF符号。
如图6所示，该16个ON符号中有4个ON符号用于传输同步信号和物理广播信道块(synchronization signal and physical broadcast channel block，SSB)。SSB由主同步信号(primary synchronization signals,PSS)、辅同步信号(secondary synchronization signals,SSS)、物理广播信道(physical broadcast channel，PBCH)三部分共同组成。第三设备可以通过PSS和SSS，获得定时信息，频偏信息，小区标识等，通过PBCH可以获得无线帧号，与空口进行对齐，还可以获取调度系统信息块1(system information block 1，SIB1)的相关信息。
由于NR系统中的一个SSB占用4个连续的OFDM符号，这里的一个SSB指的是一个波束方向的SSB，因此第一信号对应的二进制比特序列中至少包括一个“1 1 1 1”，如图6所示，第一信号的前导序列至少包括一个“1 1 1 1”，或者，至少包括一个“0 0 1 1 1 1”，或者，第一信号的前导对应的比特序列以“1 1 1 1”开头，或者以“0 0 1 1 1 1”开头。第一设备可以在“1 1 1 1”对应的OFDM符号向第三设备发送SSB。应理解，这里的0表示比特0，这里的1表示比特1。
对于小区定义的SSB(cell defining SSB，CD-SSB)，该SSB存在SIB1，SSB之后可能会有SIB1的调度，承载该SIB1的下行数据可能会占用多个连续的OFDM符号，如前所述，第一信号的调制方式通常为OOK调制，为了能够获取OOK调制ON符号或OFF符号的边界，第一信号应尽量避免采用连续的ON符号，或者，连续的OFF符号。为了避免SIB1占用连续的OFDM符号对第二设备获取第一信号中ON符号或OFF符号边界的影响，优选地，该SSB为非小区定义SSB(non cell definedSSB，non CD-SSB)，即该SSB不存在SIB1。
一种可能的实施方式，第一信号的前导序列所占的OFDM符号个数为一个时隙内OFDM符号个数的整数倍。还可以表述为，第一信号的前导序列中元素的个数为一个时隙内OFDM符号个数的整数倍。
可选地，第一设备在N1个ON符号中的至少一个符号上向第三设备发送第二信号，例如第二信号为物理下行共享信道(physical downlink shared channel，PDSCH)，对应的，第三设备在N1个ON符号中的至少一个符号上接收该第二信号。
示例地，如图7所示，在NR系统中，OFDM符号的循环前缀为正常前缀时，一个时隙内OFDM的符号个数为14，因PDSCH传输时，第一设备有可能会向第三设备发送配置信息，该配置信息用于第三设备确定不可以用于PDSCH传输的资源，在NR系统中，如前文所述，该配置信息对应一个或多个速率匹配图案。每个速率匹配图案在时域上配置的单位为1或2个时隙，因此为了配合速率匹配图案，可以将第一信号的前导序列的元素个数设定为14或者28的倍数，例如第一信号的前导序列的元素个数为28，即该第一信号的前导序列的传输需要28个OFDM符号，比特1对应ON符号，比特0对应OFF符号。例如该前导序列的传输需要14个ON符号和14个OFF符号。
其中，14个ON符号用于传输PDSCH，并且上述28个OFDM符号中比特‘1’和比特‘0’出现的位置和速率匹配图案(rate match pattern)对应的比特位图对应，即28个OFDM符号中比特‘1’和比特‘0’出现的位置与速率匹配图案中的symbolsInResourceBlock对应。symbolsInResourceBlock用于指示PDSCH传输期间在一个或者多个时隙上哪些OFDM符号可以传输PDSCH，哪些OFDM符号不可以传输PDSCH。因此为了保证第一信号的前导序列和速率匹配图案对应的位图比特能够互相对应，该第一信号的前导序列的元素个数需要为14的整数倍。
可选地，方法200还包括：
步骤S220，第一设备在N个OFDM符号上向第二设备发送第一信号前，第一设备向第三设备发送去激活信息，该去激活信息用于去激活第一资源。对应的，第三设备接收到该去激活信息后去激活第一资源。
方法200包括步骤S220的前提是，第一设备在N个OFDM符号上向第二设备发送第一信号前，第一设备向第三设备发送了半静态配置信令，并且该半静态配置信令配置的第一资源已被激活，且第一资源包括上述N个OFDM符号。
示例地，如图8所示，在第一信号传输前，第一设备向第三设备配置了半静态配置信令，该半静态配置信令可以为半静态PDSCH，或者半静态参考信号，并且该半静态配置信令配置的第一资源(例如周期性的资源)已经被激活(例如在T1时刻被激活)，第一资源与上述N个OFDM符号发生了资源重叠。
为了避免第三设备将第一信号误认为半静态配置信令配置的第一资源所调度的信息，影响第三设备的接收性能，网络设备需要在该第一信号传输前，去激活上述半静态配置信令配置的第一资源(例如在T2时刻去激活)。
通过步骤S220，可以避免第三设备将第一信号误认为半静态配置信令配置的第一资源所调度的信息，从而影响第三设备的接收性能。
如图9所示，本申请还提出一种信号的发送方法300，方法300包括：
步骤S310，第一设备向第二设备发送第一信号，该第一信号承载于N个OFDM符号上，其中N个OFDM符号包括N1个第一符号，N为大于或等于1的整数，N1＜N。对应的，第二设备接收该第一信号。
示例地，第一信号可以基于CP-OFDM波形，采用MC-OOK调制。具体地，可以通 过时间长度为2μs或4μs的OFDM符号承载第一信号。例如，第一信号包括数据时，假设该数据的信息比特为“10”，编码比特为“1001”，通过MC-OOK或OOK调制后，编码比特“1”生成ON符号，编码比特“0”生成OFF符号，即数据经编码调制后依次生成ON符号，OFF符号，OFF符号，ON符号。
其中，第一信号可以是前导序列和/或数据。前导序列的功能可以包括以下至少一项：自动增益控制(automatic gain control,AGC)，时间同步，频率同步，数据包检测，边界检测，速率指示。AGC用于通过调整接收信号的强度减少失真。时间同步用于通过获取正确的定时或采样定时减少非相干间隔的误差。边界检测用于检测前导序列和/或控制信息的边界。速率指示用于指示不同的数据传输速率。前导序列位于数据之前，用于传输前导序列的时域资源和用于传输数据的时域资源可以是连续的，也可以是不连续的。这里的数据指的是该前导序列对应的数据。
第一信号对应的二进制序列中的每个元素对应该N个OFDM符号中的一个OFDM符号。或者第一信号对应的编码比特序列中的每个元素对应该N个OFDM符号中的一个OFDM符号。对于第一信号，在一个OFDM符号上可以映射该二进制序列的一个元素，或者，在一个OFDM符号上可以映射该编码序列的一个元素。其中二进制序列指的是由二进制数0(或称为比特0)和/或二进制数1(或称为比特1)组成的序列。编码比特序列指的是由二进制数0(或称为比特0)和/或二进制数1(或称为比特1)组成的序列。应理解，序列中的一个二进制数即为1个元素，例如“0”或“1”为该序列的1个元素。例如上述二进制序列，或者上述编码比特序列用数学形式可以表示为{a0,a1,a2,…,an-1}，ai为这个序列的一个元素，ai为一个二进制数，其中i＝0,1,2,…,n-1。该序列中包含的元素个数为n。需要说明的是，第一信号包括前导序列时，该前导序列对应的二进制序列不需要编码。第一信号包括数据时，该数据对应的信息比特需要编码。
可选地，用于传输该第一信号的该N个OFDM符号的天线端口相同。
可选地，用于传输该第一信号的该N个OFDM符号的循环前缀和/或子载波间隔相同。
可选地，用于传输该第一信号的该N个OFDM符号位于K个时间单元中，第一时间单元中用于传输第一信号的所有OFDM符号的天线端口相同，其中第一时间单元为该K个时间单元中的一个或多个时间单元。例如，K为2，时间单元依次编号为0～1。第一时间单元为时间单元0，或时间单元1，在时间单元0内，用于传输第一信号的所有OFDM符号的天线端口相同。在时间单元1内，用于传输第一信号的所有OFDM符号的天线端口相同。时间单元0和时间单元1之间的天线端口可以相同，也可以不同。
可选地，第一信号的调制方式为OOK调制，ASK调制，或FSK调制。
可选地，第一信号的编码方式为曼侧斯特(manchester)码，或密勒(miller)编码，或FM0(即bi-phase space)编码，或PIE(pulse interval encoding，脉冲宽度编码)编码。
可选地，该N个OFDM符号还包括N2个第二符号，N2+N1＝N。
可选地，N1个第一符号的功率相同。也可以表述为，N1个第一符号的能量相同。还可以表述为，N1个第一符号的EPRE相同。
可选地，N1个第一符号中任意两个第一符号的功率差比较接近，或者说，N1个第一符号中任意两个第一符号的功率差的绝对值小于第一阈值。其中，该第一阈值小于或者等于N1个第一符号的功率的平均值。也可以表述为，N1个第一符号中任意两个第一符号的 能量差比较接近，或者说，N1个第一符号中任意两个第一符号的能量差的绝对值小于第二阈值。其中，该第二阈值小于或者等于N1个第一符号的能量的平均值。还可以表述为，N1个第一符号中任意两个第一符号的能量差比较接近，或者说，N1个第一符号中每两个第一符号的EPRE差的绝对值小于第三阈值。其中，该第三阈值小于或者等于N1个第一符号的EPRE的平均值。
可选地，第一信号包括被动物联网的下行信号，或者WUR唤醒信号。
可选地，第一符号为开关键控调制或者多载波开关键控调制对应的ON符号，第二符号为开关键控调制或者多载波开关键控调制对应的OFF符号。
可选地，第一符号与第二符号的区别包括以下至少一项：
第一符号上有数据/信令传输，第二符号上没有数据/信令传输；
第一符号为有能量传输的OFDM符号，第二符号为没有能量传输的OFDM符号；
在第一符号上，第一设备可以检测到能量高于某一门限值，在第二符号上，第一设备没有检测到能量高于某一门限值；
第一符号的能量高于第二符号的能量。
通过上述方案，可以在LTE或者NR系统中引入类似RFID和WUR的技术，用于传输第一信号的OFDM符号对应的RE上可以承载信息，因此通过方法300，可以在N个OFDM符号的ON符号对应的RE上承载一些第一设备向第三设备发送的信息，这样第一设备可以实现在相同的OFDM符号上既向第二设备发送了第一信号，又向第三设备发送了第二信号，提升频谱效率。第一设备向第三设备发送的信息可以是，例如下行控制信息，物理下行共享信道，参考信号，同步信号，广播信号中的一项或多项。
可选地，上述N个OFDM符号包括连续的4个第一符号(例如ON符号)。第一信号对应的二进制比特序列中至少包括一个“1 1 1 1”，如图6所示，第一信号的前导序列至少包括一个“1 1 1 1”，或者，至少包括一个“0 0 1 1 1 1”，或者，第一信号的前导对应的比特序列以“1 1 1 1”开头，或者以“0 0 1 1 1 1”开头。第一设备可以在“1 1 1 1”对应的OFDM符号向第三设备发送第一信号(例如SSB)。应理解，这里的0表示比特0，这里的1表示比特1。
通过上述方案，第一设备可以在上述N个OFDM符号的ON符号对应的RE上承载SSB，以减少网络资源的开销。
可选地，第一信号的前导序列所占的OFDM符号个数为一个时隙内OFDM符号个数的整数倍。还可以表述为，第一信号的前导序列中元素的个数为一个时隙内OFDM符号个数的整数倍。
通过上述方案，第一设备可以在上述N个OFDM符号的ON符号对应的子载波上承载第一信号(例如PDSCH)，以减少网络资源的开销。应理解，上述流程图4或9中所示的虚线步骤为可选地步骤，并且各步骤的先后顺序依照方法的内在逻辑确定，图4或9中所示的序号仅为示例，不对本申请步骤的先后顺序造成限制。
应理解，第一设备在调度其他下行传输(例如除图4或图9所示之外的下行传输)时，该下行传输对应的OFDM符号中ON符号和OFF符号出现的图样，应当避免和第一信号传输时ON符号和OFF符号出现的图样相同，图样即为ON符号和OFF符号的数量和排列顺序。
还应理解，本申请实施例提供的方法可以单独使用，也可以结合使用，本申请对此不做限制。
需注意的是，图4或9中示意的执行主体仅为示例，该执行主体也可以是支持该执行主体实现图4或9所示方法的芯片、芯片系统、或处理器，本申请对此不作限制。
上文结合附图描述了本申请实施例的方法实施例，下面描述本申请实施例的装置实施例。可以理解，方法实施例的描述与装置实施例的描述可以相互对应，因此，未描述的部分可以参见前面方法实施例。
可以理解的是，上述各个方法实施例中，由第一设备实现的方法和操作，也可以由可用于第一设备的部件(例如芯片或者电路)实现，由第二设备实现的方法和操作，也可以由可用于第二设备的部件(例如芯片或者电路)实现。
上述主要从各个网元之间交互的角度对本申请实施例提供的方案进行了介绍。可以理解的是，各个网元，例如发射端设备或者接收端设备，为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
本申请实施例可以根据上述方法示例对发射端设备或者接收端设备进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。需要说明的是，本申请实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。下面以采用对应各个功能划分各个功能模块为例进行说明。
图10是本申请实施例提供的通信装置的示意性框图。该通信装置400包括收发单元410和处理单元420。收发单元410可以与外部进行通信，处理单元420用于进行数据处理。收发单元410还可以称为通信接口或通信单元。
可选地，该通信装置400还可以包括存储单元，该存储单元可以用于存储指令或者和/或数据，处理单元420可以读取存储单元中的指令或者和/或数据。
在一种设计中，该通信装置400可以为第一设备，收发单元410用于执行上文方法实施例中第一设备的接收或发送的操作，处理单元420用于执行上文方法实施例中第一设备内部处理的操作。
在另一种设计中，该通信装置400可以为包括第一设备的设备。或者，该通信装置400可以为配置在第一设备中的部件，例如，第一设备中的芯片。这种情况下，收发单元410可以为接口电路、管脚等。具体地，接口电路可以包括输入电路和输出电路，处理单元420可以包括处理电路。
一种可能的实现方式中，收发单元410用于在N个正交频分复用OFDM符号上向第二设备发送第一信号，该N个OFDM符号包括N1个第一符号，其中N为大于或等于1的整数，N1＜N，该收发单元410还用于在该N1个第一符号中的至少一个第一符号上向第三设备发送第二信号。
基于上述方案，第一设备能够利用现有通信系统中的下行信号生成发送至第二设备的第一信号，并且能够利用承载第一信号的第一符号所对应的资源元素RE承载发送至第三设备(与第二设备的能力不同)的第二信号，可以实现在现有通信系统中引入类似RFID和WUR的技术，并且能够节省网络资源开销。
一种可能的实现方式中，该N个OFDM符号还包括N2个第二符号，该N2个第二符号中的至少一个第二符号承载第一设备配置给第三设备的零功率信道状态信息参考信号，或者，该N2个第二符号中的至少一个第二符号被第一设备配置为不用于传输第三设备对应的下行信号的资源，其中，N2+N1＝N。
一种可能的实现方式中，该N1个第一符号的功率相同。
一种可能的实现方式中，该第一符号为开关键控调制或者多载波开关键控调制对应的ON符号。
一种可能的实现方式中，该第二符号为开关键控调制或者多载波开关键控调制对应的OFF符号。
一种可能的实现方式中，该N个OFDM符号至少包括4个连续的该第一符号。
一种可能的实现方式中，该4个连续的该第一符号上承载同步信号和/或广播信号。
一种可能的实现方式中，该第一信号的前导序列所占的OFDM符号个数为一个时隙内OFDM符号个数的整数倍。
一种可能的实现方式中，该第二信号包括以下至少一项：下行控制信息；物理下行共享信道；参考信号；同步信号；广播信号。
一种可能的实现方式中，当该第二信号包括下行控制信息时，该下行控制信息为不调度数据的下行控制信息。
一种可能的实现方式中，该收发单元410在N个OFDM符号上向第二设备发送第一信号前，已向第三设备发送了半静态配置信令，并且该半静态配置信令配置的第一资源已被激活，该第一资源包括该N个OFDM符号，该收发单元410还用于在N个OFDM符号上向第二设备发送第一信号前，向第三设备发送去激活信息，该去激活信息用于去激活该第一资源。
图11是本申请实施例提供的通信装置的示意性框图。该通信装置500包括收发单元510和处理单元520。收发单元510可以与外部进行通信，处理单元520用于进行数据处理。收发单元510还可以称为通信接口或通信单元。
可选地，该通信装置500还可以包括存储单元，该存储单元可以用于存储指令或者和/或数据，处理单元520可以读取存储单元中的指令或者和/或数据。
在一种设计中，该通信装置500可以为第二设备，收发单元510用于执行上文方法实施例中第二设备的接收或发送的操作，处理单元520用于执行上文方法实施例中第二设备内部处理的操作。
在另一种设计中，该通信装置500可以为包括第二设备的设备。或者，该通信装置500可以为配置在第二设备中的部件，例如，第二设备中的芯片。这种情况下，收发单元510可以为接口电路、管脚等。具体地，接口电路可以包括输入电路和输出电路，处理单元520可以包括处理电路。
一种可能的实现方式中，该收发单元510用于在N个正交频分复用OFDM符号上接 收来自第一设备的第一信号，该N个OFDM符号包括N1个第一符号，该N1个第一符号中的至少一个第一符号上承载该第一设备向第三设备发送的第二信号，其中N为大于或等于1的整数，N1＜N。
一种可能的实现方式中，该收发单元510用于在N个正交频分复用OFDM符号上接收来自第一设备的第一信号，该N个OFDM符号包括N1个第一符号，其中N为大于或等于1的整数，N1＜N。
基于上述方案，第二设备接收的第一信号可以基于现有通信系统中的下行信号生成，并且第一信号的第一符号所对应的资源元素RE还可以承载发送至第三设备(与第二设备的能力不同)的第二信号，实现在现有通信系统中引入类似RFID和WUR的技术，并且能够节省网络资源开销。
一种可能的实现方式中，该N个OFDM符号还包括N2个第二符号，该N2个第二符号中的至少一个OFDM符号承载第一设备配置给第三设备的零功率信道状态信息参考信号，或者，该N2个第二符号中的至少一个第二符号被第一设备配置为不用于传输第三设备对应的下行信号的资源，其中，N2+N1＝N。
一种可能的实现方式中，该N1个第一符号的功率相同。
一种可能的实现方式中，该第一符号为开关键控调制或者多载波开关键控调制对应的ON符号。
一种可能的实现方式中，该第二符号为开关键控调制或者多载波开关键控调制对应的OFF符号。
一种可能的实现方式中，该N个OFDM符号至少包括4个连续的该第一符号。
一种可能的实现方式中，该4个连续的该第一符号上承载同步信号和/或广播信号。结合第二方面，在第二方面的某些实现方式中，该第一信号的前导序列所占的OFDM符号个数为一个时隙内OFDM符号个数的整数倍。
一种可能的实现方式中，该第二信号包括以下至少一项：下行控制信息，物理下行共享信道，参考信号，同步信号，广播信号。
一种可能的实现方式中，当该第二信号包括下行控制信息时，该下行控制信息为不调度数据的下行控制信息。
如图12所示，本申请实施例还提供一种通信装置600。该通信装置600包括处理器610，处理器610与存储器620耦合，存储器620用于存储计算机程序或指令或者和/或数据，处理器610用于执行存储器620存储的计算机程序或指令和/或者数据，使得上文方法实施例中的方法被执行。
可选地，该通信装置600包括的处理器610为一个或多个。
可选地，如图12所示，该通信装置600还可以包括存储器620。
可选地，该通信装置600包括的存储器620可以为一个或多个。
可选地，该存储器620可以与该处理器610集成在一起，或者分离设置。
可选地，如图12所示，该通信装置600还可以包括收发器630和/或通信接口，收发器630和/或通信接口用于信号的接收和/或发送。例如，处理器610用于控制收发器630和/或通信接口进行信号的接收和/或发送。
作为一种方案，该通信装置600用于实现上文方法实施例中由第一设备执行的操作。 例如，处理器610用于实现上文方法实施例中由第一设备内部执行的操作，收发器630用于实现上文方法实施例中由第一设备执行的接收或发送的操作。装置400中的处理单元420可以为图12中的处理器，收发单元410可以为图12中的收发器。处理器610执行的操作具体可以参见上文对处理单元420的说明，收发器630执行的操作可以参见对收发单元410的说明，这里不再赘述。
如图13所示，本申请实施例还提供一种通信装置700。该通信装置700包括处理器710，处理器710与存储器720耦合，存储器720用于存储计算机程序或指令或者和/或数据，处理器710用于执行存储器720存储的计算机程序或指令和/或者数据，使得上文方法实施例中的方法被执行。
可选地，该通信装置700包括的处理器710为一个或多个。
可选地，如图13所示，该通信装置700还可以包括存储器720。
可选地，该通信装置700包括的存储器720可以为一个或多个。
可选地，该存储器720可以与该处理器710集成在一起，或者分离设置。
可选地，如图13所示，该通信装置700还可以包括收发器730和/或通信接口，收发器730和/或通信接口用于信号的接收和/或发送。例如，处理器710用于控制收发器730进行信号的接收和/或发送。
作为一种方案，该通信装置700用于实现上文方法实施例中由第二设备执行的操作。
例如，处理器710用于实现上文方法实施例中由第二设备内部执行的操作，收发器730用于实现上文方法实施例中由第二设备执行的接收或发送的操作。装置500中的处理单元520可以为图13中的处理器，收发单元510可以为图13中的收发器和/或通信接口。处理器710执行的操作具体可以参见上文对处理单元520的说明，收发器730执行的操作可以参见对收发单元510的说明，这里不再赘述。
本申请实施例还提供了一种通信装置，包括处理器，该处理器与输入/输出接口耦合，通过该输入/输出接口传输数据，该处理器用于执行上述任一方法实施例中的方法。
如图14，本申请实施例还提供了一种通信装置800。该通信装置800包括逻辑电路810以及输入/输出接口(input/output interface)820。
其中，逻辑电路810可以为通信装置800中的处理电路。逻辑电路810可以耦合连接存储单元，调用存储单元中的指令，使得通信装置800可以实现本申请各实施例的方法和功能。输入/输出接口820，可以为通信装置800中的输入输出电路，将通信装置800处理好的信息输出，或将待处理的数据或信令信息输入通信装置800进行处理。
作为一种方案，该通信装置800用于实现上文各个方法实施例中由第一设备执行的操作。
例如，逻辑电路810用于实现上文方法实施例中由第一设备执行的处理相关的操作，如，图4或9所示实施例中的第一设备执行的处理相关的操作，输入/输出接口820用于实现上文方法实施例中由第一设备执行的发送和/或接收相关的操作，如，图4或9所示实施例中的第一设备执行的发送和/或接收相关的操作。逻辑电路810执行的操作具体可以参见上文对处理单元420的说明，输入/输出接口820执行的操作可以参见上文对收发单元410的说明，这里不再赘述。
作为另一种方案，该通信装置800用于实现上文各个方法实施例中由第二设备执行的 操作。
例如，逻辑电路810用于实现上文方法实施例中由第二设备执行的处理相关的操作，如，图4或9所示实施例中的第二设备执行的处理相关的操作，输入/输出接口820用于实现上文方法实施例中由第二设备执行的发送和/或接收相关的操作，如，图4或9所示实施例中的第二设备执行的发送和/或接收相关的操作。逻辑电路810执行的操作具体可以参见上文对处理单元520的说明，输入/输出接口820执行的操作可以参见上文对收发单元510的说明，这里不再赘述。
应理解，上述通信装置可以是一个或多个芯片。例如，该通信装置可以是现场可编程门阵列(field programmable gate array，FPGA)，可以是专用集成芯片(application specific integrated circuit，ASIC)，还可以是系统芯片(system on chip，SoC)，还可以是中央处理器(central processor unit，CPU)，还可以是网络处理器(network processor，NP)，还可以是数字信号处理电路(digital signal processor，DSP)，还可以是微控制器(micro controller unit，MCU)，还可以是可编程控制器(programmable logic device，PLD)或其他集成芯片。
在实现过程中，上述方法的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。为避免重复，这里不再详细描述。
应注意，本申请实施例中的处理器可以是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(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。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。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。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
可以理解，本申请实施例中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(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。应注意，本文描述的系统和方法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。
本申请实施例还提供一种通信系统，该通信系统包括第一设备和第二设备，可选地，该通信系统还包括第三设备。
根据本申请实施例提供的方法，本申请还提供一种计算机可读介质，该计算机可读介质存储有程序代码，当该程序代码在计算机上运行时，使得该计算机执行图4或9所示实施例的方法。例如，该计算机程序被计算机执行时，使得该计算机可以实现上述方法实施例中由第一设备执行的方法，或由第二设备执行的方法。
本申请实施例还提供一种包含指令的计算机程序产品，该指令被计算机执行时使得该计算机实现上述方法实施例中由第一设备执行的方法，或由第二设备执行的方法。
上述提供的任一种通信装置中相关内容的解释及有益效果均可参考上文提供的对应的方法实施例，此处不再赘述。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，高密度数字视频光盘(digital video disc，DVD))、或者半导体介质(例如，固态硬盘(solid state disc，SSD))等。
上述各个装置实施例中的网络设备和终端设备与方法实施例中的网络设备和终端设备对应，由相应的模块或单元执行相应的步骤，例如通信单元(收发器)执行方法实施例中接收或发送的步骤，除发送、接收外的其它步骤可以由处理单元(处理器)执行。具体单元的功能可以参考相应的方法实施例。其中，处理器可以为一个或多个。
在本说明书中使用的术语“部件”、“模块”、“系统”等用于表示计算机相关的实体、硬件、固件、硬件和软件的组合、软件、或执行中的软件。例如，部件可以是但不限于，在处理器上运行的进程、处理器、对象、可执行文件、执行线程、程序和/或计算机。通过图示，在计算设备上运行的应用和计算设备都可以是部件。一个或多个部件可驻留在进程和/或执行线程中，部件可位于一个计算机上和/或分布在两个或更多个计算机之间。此外，这些部件可从在上面存储有各种数据结构的各种计算机可读介质执行。部件可例如根据具有一个或多个数据分组(例如来自与本地系统、分布式系统和/或网络间的另一部件交互的二个部件的数据，例如通过信号与其它系统交互的互联网)的信号通过本地和/ 或远程进程来通信。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (27)

  1. 一种发送信号的方法，其特征在于，包括：
    第一设备在N个正交频分复用OFDM符号上向第二设备发送第一信号，所述N个OFDM符号包括N1个第一符号，其中N为大于或等于1的整数，N1＜N；
    所述第一设备在所述N1个第一符号中的至少一个第一符号上向第三设备发送第二信号。
  2. 根据权利要求1所述的方法，其特征在于，所述N个OFDM符号还包括N2个第二符号，所述N2个第二符号中的至少一个第二符号承载所述第一设备配置给所述第三设备的零功率信道状态信息参考信号，或者，所述N2个第二符号中的至少一个第二符号被所述第一设备配置为不用于传输所述第三设备对应的下行信号的资源，其中，N2+N1＝N。
  3. 根据权利要求1或2所述的方法，其特征在于，所述N1个第一符号的功率相同。
  4. 根据权利要求1至3中任一项所述的方法，其特征在于，所述第一符号为开关键控调制或者多载波开关键控调制对应的ON符号。
  5. 根据权利要求2至4中任一项所述的方法，其特征在于，所述第二符号为开关键控调制或者多载波开关键控调制对应的OFF符号。
  6. 根据权利要求1至5中任一项所述的方法，其特征在于，所述N个OFDM符号至少包括4个连续的所述第一符号。
  7. 根据权利要求6所述的方法，其特征在于，所述4个连续的所述第一符号上承载同步信号和/或广播信号。
  8. 根据权利要求1至5中任一项所述的方法，其特征在于，所述第一信号的前导序列所占的OFDM符号个数为一个时隙内OFDM符号个数的整数倍。
  9. 根据权利要求1至5中任一项所述的方法，其特征在于，所述第二信号包括以下至少一项：
    下行控制信息；
    物理下行共享信道；
    参考信号；
    同步信号；
    广播信号。
  10. 根据权利要求9所述的方法，其特征在于，当所述第二信号包括下行控制信息时，所述下行控制信息为不调度数据的下行控制信息。
  11. 根据权利要求1至10中任一项所述的方法，其特征在于，所述第一设备在N个OFDM符号上向所述第二设备发送第一信号前，所述第一设备向所述第三设备发送了半静态配置信令，并且所述半静态配置信令配置的第一资源已被激活，所述第一资源包括所述N个OFDM符号，所述方法还包括：
    所述第一设备在N个OFDM符号上向所述第二设备发送第一信号前，所述第一设备向所述第三设备发送去激活信息，所述去激活信息用于去激活所述第一资源。
  12. 一种发送信号的方法，其特征在于，包括：
    第二设备在N个正交频分复用OFDM符号上接收来自第一设备的第一信号，所述N个OFDM符号包括N1个第一符号，所述N1个第一符号中的至少一个第一符号上承载所述第一设备向第三设备发送的第二信号，其中N为大于或等于1的整数，N1＜N。
  13. 根据权利要求12所述的方法，其特征在于，所述N个OFDM符号还包括N2个第二符号，所述N2个第二符号中的至少一个第二符号承载所述第一设备配置给所述第三设备的零功率信道状态信息参考信号，或者，所述N2个第二符号中的至少一个第二符号被所述第一设备配置为不用于传输所述第三设备对应的下行信号的资源，其中，N2+N1＝N。
  14. 根据权利要求12或13所述的方法，其特征在于，所述N1个第一符号的功率相同。
  15. 根据权利要求12至14中任一项所述的方法，其特征在于，所述第一符号为开关键控调制或者多载波开关键控调制对应的ON符号。
  16. 根据权利要求13至15中任一项所述的方法，其特征在于，所述第二符号为开关键控调制或者多载波开关键控调制对应的OFF符号。
  17. 根据权利要求12至16中任一项所述的方法，其特征在于，所述N个OFDM符号至少包括4个连续的所述第一符号。
  18. 根据权利要求17所述的方法，其特征在于，所述4个连续的所述第一符号上承载同步信号和/或广播信号。
  19. 根据权利要求12至16中任一项所述的方法，其特征在于，所述第一信号的前导序列所占的OFDM符号个数为一个时隙内OFDM符号个数的整数倍。
  20. 根据权利要求12至16中任一项所述的方法，其特征在于，所述第二信号包括以下至少一项：
    下行控制信息；
    物理下行共享信道；
    参考信号；
    同步信号；
    广播信号。
  21. 根据权利要求20所述的方法，其特征在于，当所述第二信号包括下行控制信息时，所述下行控制信息为不调度数据的下行控制信息。
  22. 一种通信装置，其特征在于，包括：
    用于实现权利要求1至11中任意一项所述的方法的单元；或者
    用于实现权利要求12至21中任意一项所述的方法的单元。
  23. 一种通信装置，其特征在于，所述装置包括处理器，所述处理器与存储器耦合，所述存储器存储有指令，所述指令被所述处理器运行时，
    使得所述处理器执行如权利要求1至11中任意一项所述的方法，或者
    使得所述处理器执行如权利要求12至21中任意一项所述的方法。
  24. 一种通信装置，其特征在于，所述装置包括逻辑电路，所述逻辑电路用于与输入/输出接口耦合，通过所述输入/输出接口传输数据，以执行如权利要求1至11中任一项所述的方法，或者，以执行如权利要求12至21中任一项所述的方法。
  25. 一种通信系统，其特征在于，所述通信系统包括第一设备和第二设备，所述第一 设备用于执行如权利要求1至11中任意一项所述的方法，所述第二设备用于执行如权利要求12至21中任意一项所述的方法。
  26. 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用于存储计算机程序，当所述计算机程序在计算机上运行时，使得所述计算机执行如权利要求1至11中任一项所述的方法，或使得所述计算机执行如权利要求12至21中任一项所述的方法。
  27. 一种计算机程序产品，其特征在于，所述计算机程序产品包括：计算机程序代码，当所述计算机程序代码被运行时，实现如权利要求1至11中任一项所述的方法，或实现如权利要求12至21中任一项所述的方法。
PCT/CN2022/125894 2021-10-29 2022-10-18 发送信号的方法和装置 Ceased WO2023071864A1 (zh)

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