WO2023185631A1 - 智能反射面、信号发送方法、装置及存储介质 - Google Patents

智能反射面、信号发送方法、装置及存储介质 Download PDF

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Publication number
WO2023185631A1
WO2023185631A1 PCT/CN2023/083400 CN2023083400W WO2023185631A1 WO 2023185631 A1 WO2023185631 A1 WO 2023185631A1 CN 2023083400 W CN2023083400 W CN 2023083400W WO 2023185631 A1 WO2023185631 A1 WO 2023185631A1
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WIPO (PCT)
Prior art keywords
signal
wireless device
reflective surface
adjustment information
amplitude
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Application number
PCT/CN2023/083400
Other languages
English (en)
French (fr)
Inventor
唐瑜键
刘家琛
苏宇
王朗
陈俊
Original Assignee
华为技术有限公司
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Publication of WO2023185631A1 publication Critical patent/WO2023185631A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0426—Power distribution
    • 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
    • H04L27/08—Amplitude regulation arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying

Definitions

  • Embodiments of the present application relate to the field of wireless communications, and in particular to an intelligent reflective surface, a signal transmission method, a device and a storage medium.
  • wireless narrowband systems are easily affected by the environment.
  • the signal may be reflected by multiple reflectors during transmission from the transmitting point to the receiving point, causing multipath phenomena during signal transmission.
  • reflectors on different paths will produce different changes in the amplitude, phase and transmission direction of the signal incident on its surface.
  • the signals on multiple paths may have the same amplitude and reverse superposition, causing the signal to be deeply attenuated, resulting in the receiving point being unable to receive the signal or receiving a weak signal.
  • RFID radio frequency identification
  • the signal carrying the inventory command sent by the RFID reader may be reflected by multiple reflectors. Deep attenuation prevents the RFID tag from receiving the signal, resulting in inventory failure. Based on this, it is urgent to propose a signal transmission method to improve the communication effect of wireless communication.
  • Embodiments of the present application provide an intelligent reflective surface, a signal transmission method, a device and a storage medium, which can improve the problem of deep signal attenuation due to reflection from multiple reflectors and improve the communication effect of wireless communications.
  • the technical solutions are as follows:
  • an intelligent reflective surface includes a plurality of array elements; each of the plurality of array elements is used to receive a first signal sent by a first wireless device. Next, send the first signal to a second wireless device; receive adjustment information sent by the first wireless device, where the adjustment information is the adjustment of the first signal by the first wireless device based on the second wireless device. send the response status; adjust its own switch state based on the adjustment information; and when receiving the second signal sent by the first wireless device, send the second signal to the second wireless device.
  • the smart reflective surface can receive the adjustment information sent by the first wireless device, and adjust its own switch state according to the adjustment information, because the adjustment information is the first wireless device based on the second wireless device.
  • the adjustment information is sent in response to the first signal sent by the wireless device. Therefore, the adjustment information can adjust the multiple array elements included in the smart reflective surface to a more appropriate switching state, thereby enabling the multiple array elements to receive the first signal.
  • the second signal sent by the wireless device is adjusted to a more appropriate phase to reduce the probability that the second signal will be deeply attenuated due to reflection by multiple reflectors, thereby improving the communication effect between the first wireless device and the second wireless device. .
  • Each array element can receive the adjustment information sent by the first wireless device, and adjust its own switch state based on the adjustment information. In this way, there is no need to set up a controller in the smart reflective surface to receive the adjustment information, which reduces the number of smart reflections. surface production costs.
  • each of the plurality of array elements includes a passive integrated circuit (IC), the passive IC includes an amplitude and phase control circuit and a signaling communication circuit, and the signaling communication circuit Connected to the amplitude and phase control circuit; the signaling communication circuit is used to receive the adjustment information, and control the switching state of the amplitude and phase control circuit based on the adjustment information; the amplitude and phase control circuit is used to turn on state, the phase and/or amplitude of the signal to be sent is adjusted.
  • IC passive integrated circuit
  • a signaling communication circuit is provided in each array element, through which the adjustment information can be received, and the switching state of the corresponding amplitude and phase control circuit is adjusted based on the received adjustment information, so that , there is no need to set up a controller in the smart reflective surface, which reduces the production cost of the smart reflective surface.
  • the amplitude and phase control circuit can be a diode, a micro-electro-mechanical system (MEMS) or a metal-oxide-semiconductor field-effect transistor (MOSFET).
  • the passive IC further includes an energy collection circuit, which is connected to the signaling communication circuit and the amplitude and phase control circuit respectively; the energy collection circuit is used to collect electromagnetic waves in the surrounding environment. The collected energy is used to supply power to the amplitude and phase control circuit and the signaling communication circuit.
  • the energy collection circuit included in the passive IC can collect the energy of electromagnetic waves in the surrounding environment, and use the collected energy to supply power to the amplitude and phase control circuit and the signaling communication circuit, so that the intelligent reflective surface does not require external
  • the power supply not only reduces the cost of use, but also enhances the ease of deployment of smart reflective surfaces.
  • each array element further includes an antenna, and the antenna is used to transmit the signal adjusted by the amplitude and phase control circuit.
  • the antenna includes a metal patch and a substrate
  • the substrate includes an insulating layer and a metal layer
  • one end of the passive IC is connected to the metal patch
  • the other end of the passive IC passes through the substrate
  • the insulating layer is connected to the metal layer of the substrate, and the material of the insulating layer of the substrate is a flexible material.
  • the material of the insulating layer of the substrate is a flexible material, such as plastic, paper, etc. In this way, not only the production cost of the smart reflective surface is reduced, but also the ease of deployment of the smart reflective surface is enhanced.
  • a signal sending method is provided, which is applied to a first wireless device.
  • the method includes sending a first signal to a second wireless device through an intelligent reflection surface, where the intelligent reflection surface includes a plurality of array elements; based on the The second wireless device responds to the first signal by sending adjustment information to the smart reflective surface, where the adjustment information is used to adjust the switching states of the multiple array elements; through the adjusted smart reflective surface
  • the second wireless device sends a second signal.
  • the array elements included in the smart reflective surface can make different adjustments to the phase and/or amplitude of the wireless signal sent by the first wireless device in different switching states. Therefore, the switching states of the multiple array elements included in the smart reflective surface are adjusted according to the response of the second wireless device to the first signal sent by the first wireless device, so that the multiple array elements can transmit the signal sent by the first wireless device.
  • the second signal is adjusted to a more appropriate phase to reduce the probability that the second signal is deeply attenuated due to reflection by multiple reflectors. In this way, the communication effect between the first wireless device and the second wireless device can be improved.
  • the implementation process of sending the first signal to the second wireless device through the smart reflective surface is: sending initial configuration information to the smart reflective surface, where the initial configuration information is used to switch the multiple array elements on and off. Perform initial configuration in the state; send the first signal to the second wireless device through the intelligent reflection after initial configuration.
  • the intelligent reflective surface is The implementation process of sending the adjustment information is: when the response signal of the second wireless device to the first signal is not received, based on the initial configuration information, the adjustment information is sent to the smart reflective surface. Since the first wireless device did not receive the response signal of the second wireless device to the first signal, it means that the first signal after phase and/or amplitude adjustment by the multiple array elements included in the smart reflective surface is still deeply attenuated, so that The first wireless device and the second wireless setting cannot communicate normally. Therefore, the switch status of each array element needs to be adjusted. At this time, the adjustment information can be generated based on the initial configuration information and sent to the smart reflective surface.
  • the multiple array elements included in the smart reflective surface can adjust their own switching states based on the adjustment information, so that the adjusted multiple array elements can adjust the first signal to an appropriate phase to reduce the signal sent by the first wireless device. attenuation, thereby enhancing the communication effect between the first wireless device and the second wireless device.
  • the implementation process of sending adjustment information to the smart reflective surface based on the response of the second wireless device to the first signal is: after receiving the response of the second wireless device to the first signal, In the case of a response signal of a signal, the adjustment information is sent to the smart reflective surface based on the signal strength of the response signal and the initial configuration information.
  • the first wireless device can start timing when sending the first signal. If a response signal from the second wireless device to the first signal is received within a preset time period, the signal strength of the response signal can be determined first, If the signal strength of the received response signal is not greater than the signal strength threshold, it means that the communication effect between the first wireless device and the second wireless device is poor, and the communication effect needs to be enhanced by adjusting the switch state of the array element. At this time , the adjustment information can be sent to the smart reflective surface. If the signal strength of the response signal is greater than the signal strength threshold, it means that the communication effect between the first wireless device and the second wireless device is good and can meet the communication requirements. That is, each array element after the initial configuration has been in At this time, you can stop sending adjustment information to the smart reflective surface to avoid blindly adjusting the switch status of each array element through adjustment information, which will affect the communication effect.
  • the adjustment information includes configuration content, configuration mode, the number of array elements to be configured, and the starting array element to be configured, and the configuration content includes multiple bit data configured for the array element to be configured, so
  • the configuration mode is used to indicate the array element to be configured corresponding to each bit data in the plurality of bit data.
  • the first signal may be an inventory command for the RFID reader to inventory the RFID tags.
  • the first wireless device may also be a base station in NB-IoT, and the second wireless device may be an NB-IoT terminal.
  • the first signal may be a data acquisition command.
  • the first wireless device may also be a wireless AP, and the second wireless device may be a terminal device that accesses the network through the wireless AP.
  • the first signal may be a signal to be responded to by the terminal device, such as a detection signal or a test signal, The embodiments of the present application do not limit this.
  • each array element among the plurality of array elements includes a passive integrated circuit IC, the passive IC includes an amplitude and phase control circuit and a signaling communication circuit;
  • the Adjustment information includes: sending the adjustment information to a signaling communication circuit of each array element.
  • the signaling communication circuit is used to control the switching state of the amplitude and phase control circuit based on the adjustment information.
  • the amplitude and phase control circuit The circuit is used to make different adjustments to the phase and/or amplitude of the signal to be sent in different states.
  • the passive IC further includes an energy collection circuit, which is used to collect the energy of electromagnetic waves in the surrounding environment, and use the collected energy to communicate with the amplitude and phase control circuit and the signaling circuit power supply.
  • an energy collection circuit which is used to collect the energy of electromagnetic waves in the surrounding environment, and use the collected energy to communicate with the amplitude and phase control circuit and the signaling circuit power supply.
  • a signal sending device which is applied to a first wireless device.
  • the signal sending device has the function of realizing the behavior of the signal sending method in the above second aspect.
  • the signaling device includes at least one module.
  • the at least one module may include a sending module and an adjustment module.
  • a sending module configured to send a first signal to a second wireless device through an intelligent reflecting surface, where the intelligent reflecting surface includes a plurality of array elements; and an adjusting module, configured to transmit a first signal to a second wireless device based on the response of the second wireless device to the first signal , sending adjustment information to the smart reflective surface, where the adjustment information is used to adjust the switching status of the plurality of array elements; a sending module is also used to send to the second wireless device through the adjusted smart reflective surface Second signal.
  • the sending module is used to send initial configuration information to the intelligent reflective surface, and the initial configuration information is used to initially configure the switching states of the plurality of array elements; through the intelligent reflective surface after the initial configuration, A reflective surface transmits the first signal to the second wireless device.
  • the adjustment module is configured to send the adjustment to the smart reflective surface based on the initial configuration information without receiving a response signal from the second wireless device to the first signal. information.
  • the adjustment module is configured to, upon receiving a response signal from the second wireless device to the first signal, based on the signal strength of the response signal and the initial configuration information, adjust the response signal to the first signal.
  • the smart reflective surface sends the adjustment information.
  • the adjustment information includes configuration content, configuration mode, the number of array elements to be configured, and the starting array element to be configured, and the configuration content includes multiple bit data configured for the array element to be configured, so
  • the configuration mode is used to indicate the array element to be configured corresponding to each bit data in the plurality of bit data.
  • the first wireless device is a radio frequency identification (RFID) reader and writer
  • the second wireless device is an RFID tag.
  • RFID radio frequency identification
  • each array element among the plurality of array elements includes a passive integrated circuit IC, which includes an amplitude and phase control circuit and a signaling communication circuit; the adjustment module is specifically used to provide a signal to each array.
  • the signaling communication circuit of the unit sends the adjustment information, the signaling communication circuit is used to control the switching state of the amplitude and phase control circuit based on the adjustment information, and the amplitude and phase control circuit is used to control the treatment in different states. The phase and/or amplitude of the transmitted signal are adjusted differently.
  • the passive IC further includes an energy collection circuit, which is used to collect the energy of electromagnetic waves in the surrounding environment, and use the collected energy to communicate with the amplitude and phase control circuit and the signaling circuit power supply.
  • an energy collection circuit which is used to collect the energy of electromagnetic waves in the surrounding environment, and use the collected energy to communicate with the amplitude and phase control circuit and the signaling circuit power supply.
  • a signal sending device in a fourth aspect, includes a processor and a memory.
  • the memory is used to store a program that supports the signal sending device in executing the signal sending method provided in the second aspect. and storing data involved in implementing the signaling method provided in the second aspect.
  • the processor is configured to execute a program stored in the memory.
  • the operating device of the storage device may further include a communication bus, which is used to establish a connection between the processor and the memory.
  • a computer-readable storage medium stores instructions, which when run on a computer, cause the computer to execute the signal sending method described in the second aspect.
  • a sixth aspect provides a computer program product containing instructions that, when run on a computer, causes the computer to execute the signal sending method described in the second aspect.
  • the smart reflective surface can receive the adjustment information sent by the first wireless device, and adjust its own switch state according to the adjustment information, because the adjustment information is the first wireless device based on the second wireless device.
  • the adjustment information is sent in response to the first signal sent by the wireless device. Therefore, the adjustment information can adjust the multiple array elements included in the smart reflective surface to a more appropriate switching state, thereby enabling the multiple array elements to receive the first signal.
  • the second signal sent by the wireless device is adjusted to a more appropriate phase to weaken the signal attenuation of the second signal due to reflection by multiple reflectors and improve the communication effect between the first wireless device and the second wireless device.
  • each of the multiple array elements included in the smart reflective surface can receive the adjustment information sent by the first wireless device, and adjust its own switch state based on the adjustment information. In this way, there is no need to Setting up the controller to receive adjustment information reduces the cost of producing smart reflective surfaces.
  • Figure 1 is a system architecture diagram involved in a signal sending method provided by an embodiment of the present application
  • Figure 2 is a schematic structural diagram of an intelligent reflective surface provided by an embodiment of the present application.
  • Figure 3 is a structural diagram of an array element provided by an embodiment of the present application.
  • Figure 4 is a schematic structural diagram of a wireless device provided by an embodiment of the present application.
  • Figure 5 is a flow chart of a signal sending method provided by an embodiment of the present application.
  • Figure 6 is a flow chart of an RFID reader and writer provided by an embodiment of the present application to inventory RFID tags
  • Figure 7 is a schematic structural diagram of a signal sending device provided by an embodiment of the present application.
  • the signal may be reflected by multiple reflectors during transmission from the transmitting point to the receiving point, causing multipath phenomena during signal transmission.
  • reflectors on different paths will produce different changes in the amplitude, phase and transmission direction of the signal incident on its surface.
  • the signals on multiple paths may have the same amplitude and reverse superposition, causing the signal to be deeply attenuated, resulting in the receiving point being unable to receive the signal or receiving a weak signal.
  • the signal carrying the inventory command sent by the RFID reader may be reflected by multiple reflectors and attenuate deeply, making the RFID tag unable to receive the signal. causing the inventory to fail.
  • the base station when the base station sends a signal carrying a data acquisition command to the NB-IoT terminal, there may be multiple indoor reflectors that cause interference to the base station.
  • the reflection of the signal carrying the data acquisition command causes the signal to be deeply attenuated, causing the NB-IoT terminal to be unable to receive the signal sent by the base station.
  • the base station can obtain the data on the gas meter of any user's home within the coverage area by sending a signal carrying a data acquisition command to the NB-IoT gas meter. Because there may be many reflectors near the installation location of the gas meter in some users' homes, the signal sent by the base station carrying the data acquisition command is deeply attenuated, causing the gas meter to be unable to receive the signal sent by the base station.
  • wireless local area networks WLAN
  • AP wireless access point
  • base station may be reflected by multiple reflectors indoors, resulting in deep attenuation, causing the terminal located at a certain location indoors to The device cannot receive the wireless signal or the wireless signal it receives is weak.
  • the signal transmission method provided by the embodiment of the present application can be used in various communication scenarios introduced above.
  • Adjust the phase and/or amplitude of the wireless signal sent by the point to reduce the probability of signal attenuation due to reverse superposition of the same amplitude during the transmission process of the wireless signal, and enhance the strength of the wireless signal received by the receiving point.
  • Figure 1 is a system architecture diagram involved in a signal sending method provided by an embodiment of the present application.
  • the system includes a first wireless device 10 , at least one second wireless device 11 and at least one smart reflective surface 12 .
  • the first wireless device 10, the second wireless device 11 and the smart reflective surface 12 can communicate with each other.
  • the first wireless device 10 may directly send the wireless signal to the second wireless device 11 .
  • the first wireless device 10 may also send a wireless signal to the second wireless device 11 through the smart reflective surface 12 .
  • the first wireless device 10 sends a wireless signal to the smart reflective surface 12 , and accordingly, the smart reflective surface 12 can reflect the received wireless signal to the second wireless device 11 .
  • the first wireless device 10 can also send adjustment information for configuring the smart reflective surface 12 to the smart reflective surface 12.
  • the smart reflective surface 12 can adjust itself through the adjustment information. .
  • the first wireless device 10 may be an RFID reader, a base station in NB-IoT, a wireless AP/cellular base station, or any other device capable of transmitting wireless signals, which is not limited in the embodiments of the present application.
  • the second wireless device 11 may be a device capable of communicating with the first wireless device 10.
  • the second wireless device 11 is an RFID reader.
  • tag when the first wireless device 10 is a base station in NB-IoT, the second wireless device 11 is an NB-IoT terminal, and when the first wireless device 10 is a wireless AP, the second wireless device 11 is The wireless AP is a terminal device that accesses the network.
  • the above-mentioned smart reflective surface 12 can be as shown in Figure 2.
  • the smart reflective surface 12 includes multiple array elements 121 (only 4 array elements are shown in Figure 2, but are not limited to 4 array elements).
  • Each of the plurality of array elements 121 receives the adjustment information sent by the first wireless device 10 and adjusts its own switch state based on the adjustment information. Subsequently, when receiving the signal sent by the first wireless device 10 to the second wireless device 11, the phase and/or amplitude of the signal can be adjusted based on its current switching state, and then the adjusted signal can be reflected to Second wireless device 11.
  • the plurality of array elements 121 can be arranged in any feasible manner.
  • multiple array elements 121 can be arranged in a matrix form, and the distance between two adjacent array elements 121 is not greater than ⁇ /2, for example, ⁇ /4.
  • ⁇ is the wavelength of the electromagnetic wave emitted by the first wireless device 10 .
  • each array element 121 among multiple array elements 121 may include a passive integrated circuit (IC) 1211 and an antenna 1212.
  • the passive IC 1211 includes an amplitude and phase control circuit A and a signaling communication circuit B. Let the communication circuit B and the amplitude and phase control circuit A be connected.
  • the signaling communication circuit B is used to receive the adjustment information sent by the first wireless device 10 and control the switching state of the amplitude and phase control circuit A based on the adjustment information.
  • the amplitude and phase control circuit A can receive the signal sent by the first wireless device 10 through the antenna 1212, and adjust the phase and/or phase of the received signal. or the amplitude is adjusted, and then the adjusted signal is sent to the second wireless device 11 through the antenna 1212.
  • the amplitude and phase control circuit A can be a diode, a micro-electro-mechanical system (MEMS) or a metal-oxide-semiconductor field-effect transistor (MOSFET).
  • MEMS micro-electro-mechanical system
  • MOSFET metal-oxide-semiconductor field-effect transistor
  • the amplitude and phase control circuit A When the amplitude and phase control circuit A is a diode, one end of the diode is connected to the antenna included in the array element 121, and the other end is connected to the ground.
  • the diode When the diode is turned on, that is, when the amplitude and phase control circuit A is in the on state, it can be equivalent to a series inductor and a resistor. At this time, the amplitude and phase control circuit A can superimpose a first phase on the signal received by the antenna. to adjust the phase of the signal.
  • the diode When the diode is disconnected, that is, when the amplitude and phase control circuit A is in a closed state, it can be equivalent to a parallel capacitor and a resistor. At this time, the amplitude and phase control circuit A can superimpose a second phase on the signal. The phase of the signal is adjusted.
  • the first phase is different from the second phase.
  • the difference between the first phase and the second phase may be 180°. In this way, when the phase of the signal is adjusted in different states, the phase difference of the adjusted signal can be made larger.
  • the passive IC 1211 can also include an energy collection circuit C, which is connected to the signaling communication circuit B and the amplitude and phase control circuit A respectively; the energy collection circuit C is used to collect the energy of electromagnetic waves in the surrounding environment, and The collected energy is used to supply power to the amplitude and phase control circuit A and the signaling communication circuit B.
  • the energy collection circuit C can be used to collect the energy of electromagnetic waves emitted by the first wireless device 10, and then use the collected energy to power the amplitude and phase control circuit A and the signaling communication circuit B.
  • the passive IC 1211 may not include the energy collection circuit C, but may include a power supply that may power the amplitude and phase control circuit A and the signaling communication circuit B.
  • the power supply may be an AC power supply, or a dry battery or a storage battery, which is not limited in the embodiments of the present application.
  • the antenna 1212 includes a metal patch a and a substrate b.
  • the substrate b includes an insulating layer b1 and a metal layer b2.
  • One end of the passive IC 1211 is connected to the metal patch a, and the other end of the passive IC 1211 passes through the insulating layer b1 of the substrate and is connected to the metal patch a.
  • the metal layer b2 of the substrate is connected.
  • the end of the passive IC1211 connected to the metal patch a can be connected to the edge of the metal patch a (as shown in Figure 2), or it can be connected to the side of the metal patch a close to the insulating layer b1 of the substrate. Any connection location is not limited in the embodiments of this application.
  • the material of the insulating layer b1 of the substrate is a flexible material, such as plastic or paper, or other flexible materials, which is not limited in the embodiments of the present application.
  • the above-mentioned smart reflective surface 12 may include a controller and multiple array elements, and each of the multiple array elements does not include signaling communication circuit B and energy collection. Circuit C.
  • the controller can be connected to each of the multiple array elements through a wired network.
  • the first wireless device 10 may send adjustment information to the controller of the smart transmitting surface. After receiving the adjustment information, the controller controls the switching state of each array element in the plurality of array elements based on the adjustment information. In this way, after each subsequent array element receives the signal sent by the first wireless device 10, it can adjust the phase and/or amplitude of the signal based on its current state, and then send the adjusted signal to the second wireless device. 11.
  • the controller may be a field-programmable gate array (FPGA), a microcontroller, or other devices capable of controlling the switching state of the array elements, which is not limited in the embodiments of the present application.
  • FPGA field-programmable gate array
  • microcontroller or other devices capable of controlling the switching state of the array elements, which is not limited in the embodiments of the present application.
  • each of the multiple array elements includes an amplitude and phase control circuit and an antenna.
  • the controller is connected to the amplitude and phase control circuit of each array element.
  • the controller can control each array element according to the received adjustment information. Included amplitude and phase control circuit switches state. In this way, when any of the plurality of array elements receives the signal sent by the first wireless device 10 through the antenna, it can adjust the phase and/or amplitude of the signal based on its current switching state, and adjust the adjusted The signal is sent to the second wireless device 11.
  • the intelligent reflective surface 12 also includes a power supply, which can supply power to the controller and the amplitude and phase control circuits included in each array element.
  • the power supply may be an AC power supply, or a dry battery or a storage battery, which is not limited in the embodiments of the present application.
  • FIG 4 is a schematic structural diagram of a wireless device provided by an embodiment of the present application.
  • the wireless device includes at least one processor 401, a communication bus 402, memory 403 and at least one communication interface 404.
  • the processor 401 can be a general central processing unit (CPU), an application-specific integrated circuit (ASIC), or one or more integrated circuits used to control the execution of the program of the present application.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • Communication bus 402 may include a path that carries information between the above-mentioned components.
  • Memory 403 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (random access memory (RAM)) or other type that can store information and instructions.
  • a dynamic storage device can also be an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disk storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disks or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer any other media, but not limited to this.
  • the memory 403 may exist independently and be connected to the processor 401 through the communication bus 402. Memory 403 may also be integrated with processor 401.
  • the memory 403 is used to store the program code for executing the solution of the present application, and the processor 401 controls the execution.
  • the processor 401 is used to execute program codes stored in the memory 403.
  • the program code may include one or more software modules.
  • the first wireless device in the system involved in the signal sending method shown in Figure 1 can send a signal to the second wireless device through one or more software modules in the program code in the processor 401 and the memory 403.
  • Communication interface 404 uses any device such as a transceiver to communicate with other devices or communication networks, such as Ethernet, wireless access network (radio access network, RAN), wireless local area networks (WLAN), etc. .
  • a transceiver uses any device such as a transceiver to communicate with other devices or communication networks, such as Ethernet, wireless access network (radio access network, RAN), wireless local area networks (WLAN), etc. .
  • the wireless device may include multiple processors, such as the processor 401 and the processor 405 shown in FIG. 4 .
  • processors may be a single-CPU processor or a multi-CPU processor.
  • a processor here may refer to one or more devices, circuits, and/or processing cores for processing data (eg, computer program instructions).
  • the wireless device may also include an output device 406 and an input device 407.
  • Output device 406 communicates with processor 401 and can display information in a variety of ways.
  • the output device 406 may be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, a projector, etc.
  • Input device 407 communicates with processor 401 and can receive user input in a variety of ways.
  • the input device 407 may be a mouse, a keyboard, a touch screen device, a sensing device, or the like.
  • the above-mentioned wireless device may be a general wireless device or a dedicated wireless device.
  • the wireless device may be an RFID reader/writer, a central base station, a wireless AP, an RFID tag, an NB-IoT terminal or a mobile phone terminal.
  • the embodiments of this application do not limit the type of wireless device.
  • Figure 5 is a flow chart of a signal transmission method provided by an embodiment of the present application. This method can be applied to the first wireless device included in the above-mentioned signal transmission system. Referring to Figure 5, the method includes:
  • Step 501 Send the first signal to the second wireless device through intelligent reflection.
  • the first wireless device sends initial configuration information to the smart reflective surface, and uses the initial configuration information to initially configure the switching states of multiple array elements included in the smart reflective surface, and uses the initial configuration of the smart reflective surface to The reflective surface transmits the first signal to the second wireless device.
  • the first wireless device may first generate initial configuration information for configuring multiple array elements, and then send the initial configuration information to the smart reflective surface.
  • the first wireless device can obtain the number of array elements to be configured, and obtain original configuration data according to the number of array elements to be configured.
  • the original configuration data includes the same number of bit data as the number of array elements to be configured, wherein each The bit data corresponds to an array element to be configured.
  • the first wireless device can determine the configuration mode according to the distribution rule between each bit data in the original configuration data, and generate configuration content according to the original configuration data and the configuration mode.
  • the first wireless device can also determine the initial array element to be configured, and then generate initial configuration information based on the configuration mode, the initial array element to be configured, and the configuration content.
  • the original configuration data may be stored in the first wireless device in advance. For example, each bit of data in the original configuration data is 0.
  • the first wireless device can also obtain the original configuration data through simulation software.
  • simulation software can be used to simulate the first wireless device, multiple second wireless devices, and the three-dimensional coordinates of each array element included in the intelligent reflective surface in the real scene.
  • the wireless communication process between multiple second wireless devices and the smart reflective surface is simulated to generate multiple configuration data.
  • the first wireless device can obtain one configuration data from the plurality of configuration data as the original configuration data.
  • the simulation software obtains the three-dimensional coordinates of the first wireless device, multiple second wireless devices, and each array element included in the smart reflective surface, and simulates configuring the first configuration data w 1 for the multiple array elements included in the smart reflective surface. .
  • the first device set is obtained, and the first device set includes all the second wireless devices.
  • the first wireless device, a plurality of second wireless devices in the first device set, and the smart reflector are Simulate the wireless communication process between the two sides, and calculate the energy value of the electromagnetic wave signal sent by the first wireless device received by each second wireless device in the first device set during the simulated communication process, and obtain the first energy
  • the value set is: Among them, M represents the number of second wireless devices in the first device set, m represents the m-th second wireless device among the M second wireless devices, Indicates the energy value of the electromagnetic wave sent by the first wireless device received by the m-th second wireless device when the first configuration data w 1 is configured for multiple array elements included in the smart reflective surface.
  • the second configuration data w 2 is calculated through the following formula (1):
  • eta is a preset coefficient used to control the the number of iterations to perform, Represents the gradient of Q.
  • a second device set is obtained, wherein the second device set includes the second wireless device corresponding to the energy value in the updated first energy value set.
  • the simulation software can refer to the method introduced above and simulate the communication process again based on the three-dimensional coordinates of the second wireless device in the second device set, the three-dimensional coordinates of the smart reflective surface and the three-dimensional coordinates of the first wireless device, and then The third configuration data is calculated based on the energy value of the electromagnetic wave signal sent by the first wireless device received by each second wireless device in the second device set.
  • the calculated n configuration data are multiple configuration data generated by the simulation software.
  • the first wireless device can determine the distribution pattern of multiple bits of data included in the original configuration data, starting from the highest bit data of the original configuration data, and then determine the configuration mode based on the distribution pattern.
  • the configuration mode is used to indicate the number of array elements to be configured corresponding to each bit of data in the configuration content.
  • the configuration mode may be a first value.
  • the configuration mode is 3. This When , this configuration mode is used to indicate that each bit of data is used to configure 3 array elements to be configured.
  • the first value can be represented by a 3-bit binary number.
  • the configuration mode can be represented by 000.
  • the configuration mode can be represented by 001. In this way analogy.
  • the first wireless device can divide the original configuration data into multiple blocks starting from the highest bit data of the original configuration data according to the configuration mode.
  • the number of bit data included in each block is equal to The first value. After that, one bit of data is obtained from each block, and the obtained bits of data are arranged in the order of the corresponding blocks to obtain the configuration content.
  • the original configuration data can be divided into 9 blocks, respectively 00 11 00 11 11 11 11 00 1, and then, according to the order of each block, take one piece of data from each block, and the resulting configuration content is 0101 1110 1.
  • the first wireless device may also determine the number of bit data included in the configuration content, that is, determine the length of the configuration content.
  • the initial configuration information may also include the length of the configuration content.
  • the configuration content is 0101 1110 1, and the number of bits it includes is 9. At this time, the length of the configuration content is 9.
  • the initial configuration information can include the binary number 00 0001 0001. Configure the length of the content.
  • each array element has an identity document (ID).
  • ID of each array element can be the number of the corresponding array element, and the numbers of multiple array elements are consecutive.
  • multiple array elements can also be divided into multiple array element blocks, and the array elements included in each array element block have the same identifier.
  • the first wireless device determines the initial waiting time After configuring the array element, you can convert the ID of the initial array element to be configured into a binary number. For example, if you want to use the array element with ID 9 as the starting array element to be configured, you can use the binary number 00 0000 1001 to indicate the starting array element to be configured.
  • the first wireless device before initially configuring the on-off state of each array element, can also first write an ID for each array element.
  • the first wireless device when the first wireless device is an RFID reader/writer, the first wireless device can use the ISO18000-6C protocol to write the ID configured for each array element into the passive IC of the corresponding array element, where the array element
  • the element ID can be any integer between 0-1023.
  • the configuration mode in the initial configuration information may not be determined based on the original configuration data, but may be determined based on multiple array elements. Determined by the number of array elements included in the array element block. At this time, the configuration mode can be the same as the number of array elements included in each array element block. That is, the configuration mode is used to indicate that one bit of data is processed for one array element block. configuration. Alternatively, the number of bit data included in the original configuration data may be equal to the number of array element blocks.
  • the first wireless device still uses the aforementioned method to determine the configuration mode. At this time, the configuration mode is used to indicate the configuration of one bit of data. The number of array element blocks.
  • the above-mentioned first wireless device may be a radio frequency identification (RFID) reader and writer
  • the second wireless device may be an RFID tag.
  • the first wireless device is an RFID reader and the second wireless device is an RFID tag
  • the first wireless device can use an RFID reader command to carry the initial configuration information.
  • the RFID reader/writer command can be a command reserved for customers or manufacturers among the commands defined in the ISO18000-6C protocol.
  • the first wireless device can carry content in the initial configuration information that is no longer than the length requirement of the corresponding field according to the length requirement of each field in the RFID reader/writer command.
  • the RFID reader/writer command also includes command codeword and verification content.
  • the command codeword is used to indicate that the initial configuration information is a configuration command for configuring the switching status of each array element in the intelligent reflective surface, for example, 1110 0000 0100 1011.
  • the verification content is generated based on content other than the verification content carried by the RFID reader/writer command, and is used for subsequent smart reflective surfaces to verify the authenticity of the command.
  • the initial configuration information sent by the RFID reader to the smart reflective surface can be as shown in Table 1 below Show:
  • the configuration mode is 000, that is, each bit of data in the configuration content is used to configure one array element.
  • the configuration content is 0011 0101 1101 1100 1.
  • 00 0001 0001 means that the configuration content length is 17, that is, the configuration content includes 17 bits of data.
  • 00 0000 0001 means that the configuration starts from the array element with ID 1.
  • the initial configuration information sent by the RFID reader to the smart reflective surface can be as shown in Table 2 below Shown:
  • the configuration mode is 001, that is, each bit of data in the configuration content is used to configure two array elements.
  • the configuration content based on the original configuration data is 0101 1110 1.
  • 00 0000 1001 represents The length of the configuration content is 9, that is, it includes 9 bits of data.
  • 00 0000 0001 means starting from the array element with ID 1.
  • the initial configuration information sent by the RFID reader to the smart reflective surface can be as follows: Table 3 Shown:
  • the configuration mode is 010, that is, each bit of data in the configuration content is used to configure four array elements.
  • the configuration content based on the original configuration data is 0110 1, and 00 0000 0101 represents the configuration content.
  • the length is 5, that is, the configuration content includes 5 bits of data, and 00 0000 0001 means starting from the array element with ID 1.
  • the initial configuration information sent by the RFID reader to the smart reflective surface can be as shown in Table 4 below:
  • the configuration mode is 010, that is, each bit of data in the configuration content corresponds to four array elements.
  • the configuration content obtained based on the original configuration data is 0.
  • 00 0000 0001 indicates that the length of the configuration content is 1, that is, the configuration content includes 1 bit of data, and 00 0000 1001 indicates that the configuration starts from the array element with ID 9.
  • the first wireless device can send the initial configuration information to the smart reflective surface.
  • the smart reflective surface receives the initial configuration information sent by the first wireless device and controls each array element according to the initial configuration information. switch status.
  • the smart reflective surface does not include a controller.
  • Each array element in the plurality of array elements includes a passive IC.
  • the passive IC includes an amplitude and phase control circuit and a signaling communication circuit.
  • the first wireless device can send initial configuration information to the signaling communication circuit of each array element.
  • the signaling communication circuit of each array element receives the initial configuration information sent by the first wireless device, and based on the initial configuration information Initial configuration of the switching state of its corresponding amplitude and phase control circuit.
  • the signaling communication circuit of the cell element can configure the configuration mode according to the configuration mode included in the initial configuration information and the bits included in the configuration content.
  • the number of bits of data, the ID of the starting array element to be configured, and the configuration content determine the corresponding bit data from the configuration content, and control the switching state of its own amplitude and phase control circuit based on the corresponding bit data. If the signaling communication circuit of the array element determines from the configuration content that its corresponding bit data is 1, the amplitude and phase control circuit controlling the array element is in the open state. If the signaling communication circuit determines from the configuration content If the bit data corresponding to itself is 0, the amplitude and phase control circuit is in a closed state.
  • the configuration mode in the initial configuration information received by the signaling communication circuit is 001
  • the starting array element to be configured is 00 0000 0000
  • the configuration content is 0 1011 1101
  • the number of bit data included in the configuration content is 00 0000 1001
  • its own ID is 8. Since 001 indicates that one bit of data corresponds to two array elements, 00 0000 1001 indicates that the configuration content includes 9-bit bit data, and 00 0000 0001 indicates that the array element with ID 1 is the starting array to be configured.
  • the signaling communication circuit can determine based on its own ID that the fourth bit data starting from the highest bit data in the configuration content is the bit data corresponding to itself, that is, the bit data corresponding to itself is 1, At this time, the signaling communication circuit can control the corresponding amplitude and phase control circuit to be in an open state.
  • the signaling communication circuit when the initial configuration information is carried through an RFID reader/writer command, after receiving the command, the signaling communication circuit first extracts the command codeword in the command, and determines the command codeword carried in the command based on the command codeword. There is configuration information for controlling the switching state of the amplitude and phase control circuit. After that, the signaling communication circuit extracts other content in the command except the verification content, and then generates the content to be compared and verified based on the extracted content, and compares the content to be compared and verified with the verification content in the received command. , if the two are the same, it means that the command is a correct instruction. At this time, you can refer to the above method to obtain the corresponding bit data from the configuration content. If they are different, it means that the initial configuration information is an incorrect instruction. At this time, you can A prompt message indicating that the initial configuration information is incorrect is sent to the first wireless device.
  • the intelligent reflective surface includes a controller and a plurality of array elements, and each array element of the plurality of array elements includes an amplitude and phase control circuit.
  • the first wireless device may send initial configuration information to the controller of the smart reflective surface. After receiving the initial configuration information, the controller initially configures the switch state of each array element in the plurality of array elements based on the initial configuration information.
  • the controller may configure the configuration mode according to the configuration mode included in the initial configuration information, the ID of the initial array element to be configured, the number of bit data included in the configuration content, the configuration content, and the ID of each array element.
  • the bit data corresponding to each array element is determined in the content, and the switching state of the amplitude and phase control circuit included in each array element is initially configured according to the determined bit data corresponding to each array element.
  • the method for determining the bit data corresponding to each array element from the configuration content included in the initial configuration information by the controller can refer to the above-mentioned signaling communication circuit to determine the bit data corresponding to itself from the configuration content included in the initial configuration information. The determination method will not be described again in the embodiment of this application.
  • the first wireless device After sending the initial configuration information to the smart reflective surface, the first wireless device sends the first signal to the smart reflective surface, The plurality of array elements in the smart reflecting surface receive the first signal through the antenna, and the antenna transmits the first signal to the amplitude and phase control circuit. After receiving the first signal, the amplitude and phase control circuit may adjust the phase and/or amplitude of the first signal based on its current switching state. Thereafter, the adjusted first signal is sent to the second wireless device.
  • the implementation process of the amplitude and phase control circuit adjusting the phase and/or amplitude of the received first signal based on its own switching state after initial configuration can refer to the above-mentioned amplitude and phase control circuit adjusting its own switching state based on the adjustment information to adjust the first signal.
  • the specific implementation process of adjusting the phase and/or amplitude of the two signals will not be described again in the embodiments of this application.
  • the first signal when the first wireless device is an RFID reader and the second wireless device is an RFID tag, the first signal may be an inventory command for the RFID reader to inventory the RFID tags.
  • the first signal may be a data acquisition command.
  • the data acquisition command can be used to obtain the gas data recorded in the gas meter.
  • the first wireless device can also be a wireless AP and the second wireless device is a terminal device that accesses the network through the wireless AP
  • the first signal can be a signal to be responded to by the terminal device, such as a detection signal or a test signal
  • the terminal device such as a detection signal or a test signal
  • the first wireless device may not initially configure the smart reflective surface, but directly send the first signal to the second wireless device through the smart reflective surface.
  • each array element in the smart reflective surface can adjust the phase and/or amplitude of the first signal based on its own switching state at the current moment, and use the adjusted first signal to The signal is sent to the second wireless device.
  • Step 502 Send adjustment information to the smart reflective surface based on the response of the second wireless device to the first signal.
  • the first wireless device After the first wireless device sends the first signal to the second wireless device through the smart reflection surface, it can detect in real time whether it receives a response signal from the second wireless device to the first signal, thereby determining whether the second wireless device responds to the first signal. response, and then send adjustment information to the smart reflective surface based on the response.
  • the adjustment information is sent to the smart reflective surface based on the initial configuration information.
  • the first wireless device may start timing when sending the first signal, and if the second wireless device does not receive a response signal to the first signal within a preset time period, it is determined that the second wireless device has not responded.
  • the first wireless device can generate adjustment information based on the initial configuration information, and then send the adjustment information to the smart reflective surface.
  • the first wireless device can obtain the configuration content in the initial configuration information, modify the configuration content, and thereby obtain the modified configuration content. Afterwards, adjustment information is generated based on the modified configuration content.
  • the first wireless device may determine the original configuration data corresponding to the configuration content in the initial configuration information, and then add 1 to the original configuration data to obtain modified configuration data.
  • the first wireless device can determine the configuration mode based on the modified configuration data by referring to the method of generating initial configuration information introduced above, obtain the modified configuration content based on the configuration mode and the modified configuration data, and then based on the modified configuration content.
  • the configuration content and configuration mode are used to generate adjustment information.
  • the simulation software can generate multiple configuration data.
  • the first wireless device can also obtain any other configuration data except the original configuration data from the multiple configuration data.
  • a piece of configuration data and then refer to the method of generating initial configuration information introduced above to generate adjustment information based on the currently obtained configuration data.
  • the first wireless device can send the adjustment to the smart reflective surface by referring to the method introduced above. Accordingly, the intelligent reflective surface can control the switching status of multiple array elements based on the adjustment information.
  • the implementation method of controlling the switching state of the array element based on the adjustment information may refer to the implementation method of controlling the switching state of the array element based on the initial configuration information described above, which will not be described again in the embodiments of this application.
  • the first wireless device does not need to send the initial configuration information to the smart reflective surface before sending the first signal.
  • the first wireless device does not receive the first signal from the second wireless device.
  • the adjustment information can be directly generated and sent to the intelligent reflective surface.
  • the specific implementation method of the first wireless device directly generating the adjustment information may refer to the above-mentioned method of generating the initial configuration information by the first wireless device, which will not be described again in the embodiment of the present application.
  • the first wireless device may send adjustment information to the smart reflective surface based on the signal strength of the response signal and the initial configuration information.
  • the first wireless device can start timing when sending the first signal. If a response signal from the second wireless device to the first signal is received within a preset time period, the signal strength of the response signal can be determined first, If the signal strength of the received response signal is not greater than the signal strength threshold, the adjustment information may be generated by referring to the above implementation of generating adjustment information based on the initial configuration information. Afterwards, the adjustment information is sent to the smart reflective surface. If the signal strength of the response signal is greater than the signal strength threshold, sending adjustment information to the smart reflective surface can be stopped.
  • the first wireless device does not send initial configuration information to the smart reflective surface before sending the first signal
  • the signal strength of the received response signal is not greater than the signal strength threshold.
  • the method of generating initial configuration information generates adjustment information for adjusting the switching states of all array elements included in the intelligent reflective surface. Afterwards, the adjustment information is sent to the smart reflective surface.
  • Step 503 Send the second signal to the second wireless device through the adjusted smart reflection.
  • the first wireless device can send a second signal to the smart reflective surface.
  • the smart reflective surface that has been adjusted according to the adjustment information can send the second signal to the smart reflective surface.
  • the phase and/or amplitude of the signal are adjusted.
  • the adjusted second signal is sent to the second wireless device.
  • the first wireless device can continue to detect the response of the second wireless device to the second signal, and then decide whether to continue to adjust the smart reflective surface based on the response. If the smart reflective surface continues to be adjusted, the first wireless device can send adjustment information to the smart transmitting surface again by referring to step 502. At this time, the adjustment information sent is different from the previous adjustment information and initial configuration information. Afterwards, the first wireless device can continue to send signals to the second wireless device through the adjusted smart reflection, and so on.
  • the phase and/or amplitude of the wireless signal sent by the first wireless device can be adjusted differently due to different switching states of the multiple array elements included in the smart reflective surface. Therefore, the switching states of the plurality of array elements included in the smart reflective surface are adjusted according to the response of the second wireless device to the first signal sent by the first wireless device, and each of the plurality of array elements can be adjusted. to a more appropriate switching state, thereby enabling multiple array elements to adjust the second signal sent by the first wireless device to a more appropriate phase, so as to reduce the probability that the second signal will be deeply attenuated due to reflection by multiple reflectors. , in this way, the communication effect between the first wireless device and the second wireless device can be improved.
  • each of the multiple array elements included in the smart reflective surface in the embodiment of the present application includes a passive IC.
  • the passive IC is provided with a signaling communication circuit.
  • the corresponding amplitude can be controlled through the signaling communication circuit.
  • the switching state of the phase control circuit is adjusted, so that there is no need to set up a controller in the smart reflective surface, which reduces the production cost of the smart reflective surface.
  • each array element is also equipped with an energy collection circuit.
  • This energy collection circuit can collect the energy of electromagnetic waves in the surrounding environment and use the collected energy to transmit energy to the amplitude and phase control circuit and signaling communication circuit. Power, make smart
  • the reflective surface does not require an external power supply for power supply, which not only reduces the cost of use, but also enhances the ease of deployment of the smart reflective surface.
  • the material of the insulating layer of the substrate in the array element included in the smart reflective surface in the embodiment of the present application can be a flexible material, such as plastic or paper. This not only reduces the production cost of the smart reflective surface, but also enhances smart reflection. Ease of deployment.
  • the smart reflective surface is the smart reflective surface as shown in Figure 2.
  • the smart reflective surface can be deployed on the top of the warehouse, or can also be deployed on the wall in the warehouse, or on the shelves in the warehouse.
  • the RFID reader can send initial configuration information to the smart reflective surface, so that the smart reflective surface configures the on-off status of its multiple array elements based on the initial configuration information.
  • the RFID reader determines the identity of an RFID tag to be inventoried from the identities of multiple RFID tags stored in it, and uses the RFID tag corresponding to the identity as the RFID tag to be inventoried, where the identity of the RFID tag Can be the ID of the RFID tag.
  • send an inventory command carrying the identification of the RFID tag to be inventoried, and start timing when the inventory command is sent. If the response signal of the RFID tag to be inventory is received within the preset time period, it means that the inventory has been arrived.
  • the RFID tag does not receive a response signal from the RFID tag to be inventoried within a preset time period, it means that the RFID tag has not been inventoried.
  • the first wireless device can continue to obtain the identity of another RFID tag from the identities of multiple RFID tags stored in itself, use the RFID tag corresponding to the identity as a new RFID tag to be inventoried, and send the RFID tag carrying the tag again. For the inventory command of the identification of the new RFID tag to be inventoried, repeat the above process until all RFID tags are inventoried.
  • the RFID reader can determine whether all RFID tags have been counted. If it is confirmed that response signals from all RFID tags have been received, that is, all RFID tags have been counted, the counting process ends. If it is determined that a response signal from at least one RFID tag has not been received, adjustment information is sent to the smart reflective surface so that the smart reflective surface can adjust the on-off state process of multiple array elements it includes based on the adjustment information. After that, the RFID reader can count all RFID tags again, or it can count RFID tags that have not been counted before, until all RFID tags are counted, or all possible adjustment information is sent.
  • an embodiment of the present application provides a signal sending device 700 , which can be applied to the first wireless device included in the above-mentioned signal sending system.
  • the device includes a sending module 701 and an adjustment module 702 .
  • the adjustment module 702 is used to perform step 502 in the above embodiment.
  • the sending module 701 is used for:
  • the adjustment module 702 is used to:
  • adjustment information is sent to the smart reflective surface based on the initial configuration information.
  • the adjustment module 702 is used to:
  • adjustment information is sent to the smart reflective surface based on the signal strength of the response signal and the initial configuration information.
  • the adjustment information includes configuration content, configuration mode, the number of array elements to be configured, and the starting array element to be configured.
  • the configuration content includes multiple bits of data configured for the array elements to be configured.
  • the configuration mode is used to indicate multiple The array element to be configured corresponding to each bit of bit data.
  • the first wireless device is a radio frequency identification RFID reader and writer
  • the second wireless device is an RFID tag
  • each of the plurality of array elements includes a passive integrated circuit IC, and the passive IC includes an amplitude and phase control circuit and a signaling communication circuit;
  • the adjustment module 702 is specifically used for:
  • the signaling communication circuit is used to control the switching state of the amplitude and phase control circuit based on the adjustment information.
  • the amplitude and phase control circuit is used to adjust the phase sum of the signal to be sent in different states. /or adjust the amplitude differently.
  • the passive IC also includes an energy collection circuit, which is used to collect the energy of electromagnetic waves in the surrounding environment, and use the collected energy to supply power to the amplitude and phase control circuit and the signaling communication circuit.
  • an energy collection circuit which is used to collect the energy of electromagnetic waves in the surrounding environment, and use the collected energy to supply power to the amplitude and phase control circuit and the signaling communication circuit.
  • the smart reflective surface can receive the adjustment information sent by the first wireless device, and adjust its own switch state according to the adjustment information, because the adjustment information is the first wireless device based on the second wireless device.
  • the device responds to the first signal sent by the first wireless device. Therefore, the adjustment information can adjust the multiple array elements included in the smart reflective surface to a more appropriate switching state, thereby enabling the multiple array elements to receive
  • the second signal sent by the first wireless device is adjusted to a more appropriate phase to weaken the signal attenuation of the second signal due to reflection by multiple reflectors and improve the communication between the first wireless device and the second wireless device. communication effect.
  • each of the multiple array elements included in the smart reflective surface can receive the adjustment information sent by the first wireless device, and adjust its own switch state based on the adjustment information. In this way, there is no need to Setting up the controller to receive adjustment information reduces the cost of producing smart reflective surfaces.
  • the signal sending device provided in the above embodiments transmits information
  • only the division of the above functional modules is used as an example.
  • the above function allocation can be completed by different functional modules as needed, that is, The internal structure of the device is divided into different functional modules to complete all or part of the functions described above.
  • the signal sending device provided by the above embodiments and the signal sending method embodiments belong to the same concept. Please refer to the method embodiments for the specific implementation process, which will not be described again here.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another, e.g., the computer instructions may be transferred from a website, computer, server, or data center To another website or computer through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) machine, server or data center for transmission.
  • 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, data center, etc. that contains one or more available media integrated.
  • the available media may be magnetic media (such as floppy disks, hard disks, magnetic tapes), optical media (such as digital versatile discs (DVD)), or semiconductor media (such as solid state disks (SSD) )wait.

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Abstract

本申请实施例公开了一种智能反射面、信号发送方法、装置及存储介质，属于无线通信领域。本申请实施例通过智能反射面接收第一无线设备发送的调整信息，并根据调整信息对自身的开关状态进行调整，由于该调整信息是第一无线设备基于第二无线设备对第一无线设备发送的第一信号的响应情况发送的，因此，该调整信息可以将智能反射面包括的多个阵元调整至更合适的开关状态，进而使多个阵元能够将接收到的第一无线设备发送的第二信号调整至更合适的相位，以降低第二信号因受到多个反射物的反射而出现深度衰减的概率，提高了第一无线设备与第二无线设备之间的通信效果。

Description

智能反射面、信号发送方法、装置及存储介质
本申请要求于2022年03月28日提交的申请号为202210314023.4、发明名称为“智能反射面、信号发送方法、装置及存储介质”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
本申请实施例涉及无线通信领域，特别涉及一种智能反射面、信号发送方法、装置及存储介质。
背景技术
在无线通信过程中，无线窄带系统容易受环境影响。例如，在具有较多反射物的室内场景中，信号在从发射点传输至接收点的过程中，可能会受到多个反射物的反射，使信号在传输过程中出现多径现象。其中，不同路径上的反射物对入射至其表面的信号的幅度、相位以及传输方向会产生不同的改变。这样，多条路径上的信号可能会出现同幅反向叠加，从而使得信号深度衰减，进而导致接收点无法接收到信号或接收到的信号较弱。例如，在无线射频识别(radio frequency identification，RFID)系统中，RFID读写器在对RFID标签进行盘点时，RFID读写器发出的携带有盘点命令的信号可能会受到多个反射物的反射出现深度衰减，使RFID标签无法接收到该信号，从而导致盘点失败。基于此，亟需提出一种信号发送方法来提高无线通信的通信效果。
发明内容
本申请实施例提供了一种智能反射面、信号发送方法、装置及存储介质，可以改善因多个反射物的反射导致信号出现深度衰减的问题，提高无线通信的通信效果。所述技术方案如下：
第一方面，提供一种智能反射面，所述智能反射面包括多个阵元；所述多个阵元中的每个阵元用于在接收到第一无线设备发送的第一信号的情况下，向第二无线设备发送所述第一信号；接收所述第一无线设备发送的调整信息，所述调整信息为所述第一无线设备基于所述第二无线设备对所述第一信号的响应情况发送；基于所述调整信息对自身的开关状态进行调整；在接收到所述第一无线设备发送的第二信号的情况下，向所述第二无线设备发送所述第二信号。
在本申请实施例中，智能反射面可以接收第一无线设备发送的调整信息，并根据调整信息对自身的开关状态进行调整，由于该调整信息是第一无线设备基于第二无线设备对第一无线设备发送的第一信号的响应情况发送的，因此，该调整信息可以将智能反射面包括的多个阵元调整至更合适的开关状态，进而使多个阵元能够将接收到的第一无线设备发送的第二信号调整至更合适的相位，以降低第二信号因受到多个反射物的反射而出现深度衰减的概率，提高了第一无线设备与第二无线设备之间的通信效果。另外，智能反射面包括的多个阵元中 的每个阵元均能够接收第一无线设备发送的调整信息，并基于调整信息对自身的开关状态进行调整，这样，就无需在智能反射面中设置控制器来接收调整信息，降低了智能反射面的生产成本。
可选地，所述多个阵元中的每个阵元包括无源集成电路(integrated circuit，IC)，所述无源IC包括幅相控制电路和信令通信电路，所述信令通信电路和所述幅相控制电路连接；所述信令通信电路用于接收所述调整信息，并基于所述调整信息控制所述幅相控制电路的开关状态；所述幅相控制电路用于在开启状态下，对待发送的信号的相位和/或幅度进行调整。
在本申请实施例中，各个阵元中均设置信令通信电路，通过该信令通信电路可以接收调整信息，并基于接收到的调整信息对对应的幅相控制电路的开关状态进行调整，这样，就无需在智能反射面中设置控制器，降低了智能反射面的生产成本。其中，幅相控制电路可以为二极管、微机电系统(micro-electro-mechanical system，MEMS)或金属半场效晶体管(metal-oxide-semiconductor field-effect transistor，MOSFET)。
可选地，所述无源IC还包括能量收集电路，所述能量收集电路分别与所述信令通信电路、所述幅相控制电路连接；所述能量收集电路用于收集周边环境中的电磁波的能量，并利用收集到的能量向所述幅相控制电路和所述信令通信电路供电。
在本申请实施例中，无源IC中包括的能量收集电路可以收集周边环境中的电磁波的能量，并利用收集到的能量向幅相控制电路和信令通信电路供电，使智能反射面无需外部电源进行供电，不仅降低了使用成本，而且增强了智能反射面的易部署性。
可选地，每个阵元还包括天线，所述天线用于发射所述幅相控制电路调整后的信号。其中，所述天线包括金属贴片和基板，所述基板包括绝缘层和金属层，所述无源IC的一端与所述金属贴片连接，所述无源IC的另一端穿过所述基板的绝缘层与所述基板的金属层连接，该基板的绝缘层的材料为柔性材料。
在本申请实施例中，由于基板的绝缘层的材料为柔性材料，例如，塑料、纸等。这样，不仅降低了智能反射面的生产成本，而且增强了智能反射面的易部署性。
第二方面，提供了一种信号发送方法，应用于第一无线设备，所述方法包括通过智能反射面向第二无线设备发送第一信号，所述智能反射面包括多个阵元；基于所述第二无线设备对所述第一信号的响应情况，向所述智能反射面发送调整信息，所述调整信息用于调整所述多个阵元的开关状态；通过调整后的所述智能反射面向所述第二无线设备发送第二信号。
在本申请实施例中，由于智能反射面包括的阵元在处于不同开关状态下能够对第一无线设备发送的无线信号的相位和/或幅度进行不同的调整。因此，根据第二无线设备对第一无线设备发送的第一信号的响应情况来对智能反射面包括的多个阵元的开关状态进行调整，能够使多个阵元将第一无线设备发送的第二信号调整至更合适的相位，以降低第二信号因受到多个反射物的反射而出现深度衰减的概率，这样，可以提高第一无线设备与第二无线设备之间的通信效果。
可选地，所述通过智能反射面向第二无线设备发送第一信号的实现过程为：向所述智能反射面发送初始配置信息，所述初始配置信息用于对所述多个阵元的开关状态进行初始配置；通过初始配置后的所述智能反射面向所述第二无线设备发送所述第一信号。
可选地，所述基于所述第二无线设备对所述第一信号的响应情况，向所述智能反射面发 送调整信息的实现过程为：在未接收到所述第二无线设备对所述第一信号的响应信号的情况下，基于所述初始配置信息，向所述智能反射面发送所述调整信息。由于第一无线设备未接收到第二无线设备对第一信号的响应信号，说明经过智能反射面包括的多个阵元进行相位和/或幅度调整后的第一信号仍出现了深度衰减，使第一无线设备和第二无线设置之间无法正常通信，因此，需对各个阵元的开关状态需要调整，此时，可以基于初始配置信息生成调整信息，并将调整信息发送至智能反射面，使智能反射面包括的多个阵元可以基于调整信息对自身的开关状态进行调整，使调整后的多个阵元能够将第一信号调整至合适的相位，来降低第一无线设备发送的信号的衰减，进而增强第一无线设备和第二无线设备之间的通信效果。
可选地，所述基于所述第二无线设备对所述第一信号的响应情况，向所述智能反射面发送调整信息的实现过程为：在接收到所述第二无线设备对所述第一信号的响应信号的情况下，基于所述响应信号的信号强度和所述初始配置信息，向所述智能反射面发送所述调整信息。
示例性地，第一无线设备可以在将第一信号发送出去时开始计时，如果在预设时长内接收到了第二无线设备对第一信号的响应信号，可以先确定该响应信号的信号强度，如果接收到的响应信号的信号强度不大于信号强度阈值，则说明第一无线设备与第二无线设备之间的通信效果较差，需通过对阵元的开关状态进行调整来增强通信效果，此时，可以向智能反射面发送该调整信息。如果该响应信号的信号强度大于信号强度阈值，则说明第一无线设备与第二无线设备之间的通信效果较好，已经可以满足通信要求，也即，通过初始配置后的各个阵元已处于较合适的开关状态，此时，可以停止向智能反射面发送调整信息，以避免盲目的通过调整信息对各个阵元的开关状进行调节反而影响通信效果。
可选地，所述调整信息包括配置内容、配置模式、待配置阵元的数量和起始的待配置阵元，所述配置内容包括为所述待配置阵元配置的多个比特数据，所述配置模式用于指示所述多个比特数据中的每个比特数据所对应的待配置阵元。
可选地，所述第一无线设备为无线射频识别RFID读写器，所述第二无线设备为RFID标签，则第一信号可以为RFID读写器对RFID标签进行盘点的盘点命令。
可选地，第一无线设备还可以为NB-IoT中的基站，第二无线设备为NB-IoT终端，此时，第一信号可以为数据获取命令。例如，当该NB-IoT终端为燃气表时，该数据获取命令可以用于获取燃气表中记录的燃气数据。或者，第一无线设备还可以为无线AP，第二无线设备为通过该无线AP接入网络的终端设备，该第一信号可以为诸如探测信号、测试信号之类的待终端设备响应的信号，本申请实施例对此不做限定。
可选地，所述多个阵元中的每个阵元包括无源集成电路IC，所述无源IC包括幅相控制电路和信令通信电路；所述向所述智能反射面发送所述调整信息，包括：向每个阵元的信令通信电路发送所述调整信息，所述信令通信电路用于基于所述调整信息控制所述幅相控制电路的开关状态，所述幅相控制电路用于在不同状态下，对待发送的信号的相位和/或幅度进行不同的调整。
可选地，所述无源IC还包括能量收集电路，所述能量收集电路用于收集周边环境中的电磁波的能量，并利用收集到的能量向所述幅相控制电路和所述信令通信电路供电。
第三方面，提供一种信号发送装置，应用于第一无线设备，所述信号发送装置具有实现上述第二方面中信号发送方法行为的功能。所述信号发送装置至少包括一个模块。示例性地， 该至少一个模块可以包括发送模块和调整模块。
发送模块，用于通过智能反射面向第二无线设备发送第一信号，所述智能反射面包括多个阵元；调整模块，用于基于所述第二无线设备对所述第一信号的响应情况，向所述智能反射面发送调整信息，所述调整信息用于调整所述多个阵元的开关状态；发送模块，还用于通过调整后的所述智能反射面向所述第二无线设备发送第二信号。
可选地，所述发送模块用于向所述智能反射面发送初始配置信息，所述初始配置信息用于对所述多个阵元的开关状态进行初始配置；通过初始配置后的所述智能反射面向所述第二无线设备发送所述第一信号。
可选地，所述调整模块用于在未接收到所述第二无线设备对所述第一信号的响应信号的情况下，基于所述初始配置信息，向所述智能反射面发送所述调整信息。
可选地，所述调整模块用于在接收到所述第二无线设备对所述第一信号的响应信号的情况下，基于所述响应信号的信号强度和所述初始配置信息，向所述智能反射面发送所述调整信息。
可选地，所述调整信息包括配置内容、配置模式、待配置阵元的数量和起始的待配置阵元，所述配置内容包括为所述待配置阵元配置的多个比特数据，所述配置模式用于指示所述多个比特数据中的每个比特数据所对应的待配置阵元。
可选地，所述第一无线设备为无线射频识别RFID读写器，所述第二无线设备为RFID标签。
可选地，所述多个阵元中的每个阵元包括无源集成电路IC，所述无源IC包括幅相控制电路和信令通信电路；所述调整模块具体用于向每个阵元的信令通信电路发送所述调整信息，所述信令通信电路用于基于所述调整信息控制所述幅相控制电路的开关状态，所述幅相控制电路用于在不同状态下，对待发送的信号的相位和/或幅度进行不同的调整。
可选地，所述无源IC还包括能量收集电路，所述能量收集电路用于收集周边环境中的电磁波的能量，并利用收集到的能量向所述幅相控制电路和所述信令通信电路供电。
第四方面，提供了一种信号发送装置，所述信号发送装置的结构中包括处理器和存储器，所述存储器用于存储支持信号发送装置执行上述第二方面所提供的信号发送方法的程序，以及存储用于实现上述第二方面所提供的信号发送方法所涉及的数据。所述处理器被配置为用于执行所述存储器中存储的程序。所述存储设备的操作装置还可以包括通信总线，该通信总线用于该处理器与存储器之间建立连接。
第五方面，提供了一种计算机可读存储介质，所述计算机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机执行上述第二方面所述的信号发送方法。
第六方面，提供了一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行上述第二方面所述的信号发送方法。
上述第四方面、第五方面、和第六方面所获得的技术效果与第二方面中对应的技术手段获得的技术效果近似，在这里不再赘述。
本申请实施例提供的技术方案带来的有益效果至少包括如下技术效果：
在本申请实施例中，智能反射面可以接收第一无线设备发送的调整信息，并根据调整信息对自身的开关状态进行调整，由于该调整信息是第一无线设备基于第二无线设备对第一无线设备发送的第一信号的响应情况发送的，因此，该调整信息可以将智能反射面包括的多个阵元调整至更合适的开关状态，进而使多个阵元能够将接收到的第一无线设备发送的第二信号调整至更合适的相位，以减弱第二信号因受到多个反射物的反射而出现的信号衰减，提高第一无线设备与第二无线设备之间的通信效果。另外，智能反射面包括的多个阵元中的每个阵元均能够接收第一无线设备发送的调整信息，并基于调整信息对自身的开关状态进行调整，这样，就无需在智能反射面中设置控制器来接收调整信息，降低了智能反射面的生产成本。
附图说明
图1是本申请实施例提供的一种信号发送方法所涉及的系统架构图；
图2是本申请实施例提供的一种智能反射面的结构示意图；
图3是本申请实施例提供的一种阵元的结构图；
图4是本申请实施例提供的一种无线设备的结构示意图；
图5是本申请实施例提供的一种信号发送方法的流程图；
图6是本申请实施例提供的一种RFID读写器对RFID标签进行盘点的流程图；
图7是本申请实施例提供的一种信号发送装置的结构示意图。
具体实施方式
为使本申请实施例的目的、技术方案和优点更加清楚，下面将结合附图对本申请实施方式作进一步地详细描述。
在对本申请实施例进行详细的解释说明之前，先对本申请实施例的应用场景予以介绍。
在具有较多反射物的室内场景中，信号在从发射点传输至接收点的过程中，可能会受到多个反射物的反射，使信号在传输过程中出现多径现象。其中，不同路径上的反射物对入射至其表面的信号的幅度、相位以及传输方向会产生不同的改变。这样，多条路径上的信号可能会出现同幅反向叠加，从而使得信号深度衰减，进而导致接收点无法接收到信号或接收到的信号较弱。
例如，在采用RFID读写器对RFID标签进行盘点时，RFID读写器发出的携带有盘点命令的信号可能会受到多个反射物的反射出现深度衰减，使RFID标签无法接收到该信号，从而导致盘点失败。
再例如，在窄带物联网(narrow band internet of things，NB-IoT)中，基站在向NB-IoT终端发送携带有数据获取命令的信号时，也可能存在室内多个反射物对基站所发出的携带有数据获取命令的信号的反射，使信号产生深度衰减，导致NB-IoT终端无法接收到基站所发出的信号。例如，基站可以通过向NB-IoT燃气表发送携带有数据获取命令的信号，以获取覆盖范围内任一用户家里的燃气表上的数据。由于一些用户家里燃气表安装位置的附近可能存在较多反射物，使基站发送的携带有数据获取命令的信号出现深度衰减，导致燃气表无法接收到基站发送的信号。
再例如，在无线局域网(wireless local area networks，WLAN)/或者蜂窝通信中，在室内 具有较多反射物的场景下，无线访问接入点(access point，AP)/基站所发送的无线信号可能会受到室内多个反射物的反射，出现深度衰减，使位于室内某个位置的终端设备无法接受到该无线信号或接受到的无线信号较弱。
本申请实施例提供的信号发送方法即可以用于上述介绍的各种通信场景中，通过在室内墙壁的对应位置设置智能反射面，并通过智能反射面包括的多个阵元对上述场景中发射点发送的无线信号的相位和/或幅度进行调整，以降低无线信号在传输过程中因同幅反向叠加造成信号衰减的概率，增强接收点接收到的无线信号的强度。
图1是本申请实施例提供的一种信号发送方法所涉及的系统架构图。如图1所示，该系统包括一个第一无线设备10、至少一个第二无线设备11和至少一个智能反射面12。其中，第一无线设备10、第二无线设备11和智能反射面12之间可以进行通信。
示例性地，第一无线设备10可以直接向第二无线设备11发送无线信号。
或者，第一无线设备10也可以通过智能反射面12向第二无线设备11发送无线信号。
示例性地，第一无线设备10向智能反射面12发送无线信号，相应地，智能反射面12可以将接收到的无线信号反射至第二无线设备11。
可选地，第一无线设备10也可以向智能反射面12发送用于对该智能反射面12进行配置的调整信息，在这种情况下，智能反射面12可以通过该调整信息对自身进行调整。
其中，第一无线设备10可以为RFID读写器、NB-IoT中的基站、无线AP/蜂窝基站等能够发射无线信号的设备，本申请实施例对此不做限定。
需要说明的是，第二无线设备11可以是能够与第一无线设备10进行通信的设备，示例性地，在第一无线设备10为RFID读写器的情况下，第二无线设备11为RFID标签，在第一无线设备10为NB-IoT中的基站的情况下，第二无线设备11为NB-IoT终端，在第一无线设备10为无线AP的情况下，第二无线设备11为通过该无线AP接入网络的终端设备。
另外，上述的智能反射面12可以如图2所示，该智能反射面12包括多个阵元121(图2中仅示出了4个阵元，但不限于4个阵元)。
其中，该多个阵元121中的每个阵元121接收第一无线设备10发送的调整信息，并基于该调整信息对自身的开关状态进行调整。后续，在接收到第一无线设备10向第二无线设备11发送的信号的情况下，可以基于自身当前的开关状态对该信号的相位和/或幅度进行调整，进而将调整后的信号反射至第二无线设备11。
其中，该多个阵元121可以以任何能够实现的方式进行排列。
示例性地，多个阵元121可以以矩阵形式进行排列，相邻的两个阵元121之间的间距不大于λ/2，例如，λ/4。其中，λ为第一无线设备10所发射的电磁波的波长。
参见图3，多个阵元121中的每个阵元121可以包括无源集成电路(integrated circuit，IC)1211和天线1212，无源IC1211包括幅相控制电路A和信令通信电路B，信令通信电路B和幅相控制电路A连接。其中，信令通信电路B用于接收第一无线设备10发送的调整信息，并基于调整信息控制幅相控制电路A的开关状态。在信令通信电路B对对应的幅相控制电路A的开关状态进行调整后，幅相控制电路A可以通过天线1212接收第一无线设备10发送的信号，并对接收到的信号的相位和/或幅度进行调整，之后，通过天线1212将调整后的信号发送至第二无线设备11。
需要说明的是，幅相控制电路A可以为二极管、微机电系统(micro-electro-mechanical system，MEMS)或金属半场效晶体管(metal-oxide-semiconductor field-effect transistor，MOSFET)。
当幅相控制电路A为二极管时，二极管的一端与阵元121包括的天线连接，另一端接地。当二极管导通时，也即幅相控制电路A处于开启状态时，可以等效为一个串联的电感和电阻，此时，幅相控制电路A可以通过给天线接收到的信号叠加一个第一相位来对该信号的相位进行调整。当二极管断开时，也即，幅相控制电路A处于关闭状态时，可以等效为一个并联的电容和电阻，此时，幅相控制电路A可以通过给该信号叠加一个第二相位来对信号的相位进行调整。
需要说明的是，第一相位与第二相位不同。示例性地，第一相位与第二相位之间的差值可以为180°。这样，在不同状态下对信号的相位进行调整时，能够使得调整后的信号的相位的差距也较大。
另外，该无源IC1211还可以包括能量收集电路C，该能量收集电路C分别与信令通信电路B、幅相控制电路A连接；能量收集电路C用于收集周边环境中的电磁波的能量，并利用收集到的能量向幅相控制电路A和信令通信电路B供电。例如，该能量收集电路C可以用于收集第一无线设备10发射的电磁波的能量，进而利用收集到的能量为幅相控制电路A和信令通信电路B供电。
可选地，在另一种可能的实现方式中，该无源IC1211可以不包括能量收集电路C，而是包括电源，该电源可以为幅相控制电路A和信令通信电路B供电。其中，电源可以为交流电源，也可以为干电池或蓄电池，本申请实施例对此不做限定。
其中，天线1212包括金属贴片a和基板b，基板b包括绝缘层b1和金属层b2，无源IC1211的一端与金属贴片a连接，无源IC1211的另一端穿过基板的绝缘层b1与基板的金属层b2连接。
需要说明的是，无源IC1211中与金属贴片a连接的一端可以与金属贴片a的边缘连接(如图2所示)，也可以与金属贴片a靠近基板的绝缘层b1的一面的任何位置连接，本申请实施例对此不做限定。
另外，基板的绝缘层b1的材料为柔性材料，例如，塑料或纸，也可以为其他柔性材料，本申请实施例对此不做限定。
可选地，在另一种实现方式中，上述的智能反射面12可以包括控制器和多个阵元，且多个阵元中的每个阵元中不包括信令通信电路B和能量收集电路C。其中，控制器可以和多个阵元中的每个阵元通过有线网络连接。
基于此，第一无线设备10可以向智能发射面的控制器发送调整信息。控制器在接收到该调整信息之后，基于该调整信息对多个阵元中的每个阵元的开关状态进行控制。这样，后续各个阵元在接收到第一无线设备10发送的信号之后，则可以基于自身当前的状态对信号的相位和/或幅度进行调整，之后，将调整后的信号发送至第二无线设备11。
其中，控制器可以为现场可编程逻辑门阵列(field-programmable gate array，FPGA)、单片机或其他能够对阵元的开关状态进行控制的器件，本申请实施例对此不做限定。
另外，多个阵元中的每个阵元包括有幅相控制电路和天线，控制器与每个阵元的幅相控制电路连接，控制器可以根据接收到的调整信息来控制每个阵元包括的幅相控制电路的开关 状态。这样，多个阵元中的任一阵元在通过天线接收到第一无线设备10发送的信号时，可以基于自身当前的开关状态来对该信号的相位和/或幅度进行调整，并将调整后的信号发送至第二无线设备11。
可选地，智能反射面12还包括有电源，电源可以为控制器和各个阵元包括的幅相控制电路供电。其中，电源可以为交流电源，也可以为干电池或蓄电池，本申请实施例对此不做限定。
图4是本申请施例提供的一种无线设备的结构示意图。参见图4，图1中的信号发送方法所涉及的系统中的第一无线设备、第二无线设备可以通过图4所示的无线设备来实现，该无线设备包括至少一个处理器401，通信总线402、存储器403以及至少一个通信接口404。
处理器401可以是一个通用中央处理器(central processing unit，CPU)、特定应用集成电路(application-specific integrated circuit，ASIC)或一个或多个用于控制本申请方案程序执行的集成电路。
通信总线402可包括一通路，在上述组件之间传送信息。
存储器403可以是只读存储器(read-only memory，ROM)或可存储静态信息和指令的其它类型的静态存储设备，随机存取存储器(random access memory，RAM)或者可存储信息和指令的其它类型的动态存储设备，也可以是电可擦可编程只读存储器(electrically erasable programmable read-only memory，EEPROM)、只读光盘(compact disc read-only Memory，CD-ROM)或其它光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘或者其它磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其它介质，但不限于此。存储器403可以是独立存在，通过通信总线402与处理器401相连接。存储器403也可以和处理器401集成在一起。
其中，存储器403用于存储执行本申请方案的程序代码，并由处理器401来控制执行。处理器401用于执行存储器403中存储的程序代码。程序代码中可以包括一个或多个软件模块。图1中所示的信号发送方法所涉及的系统中的第一无线设备可以通过处理器401以及存储器403中的程序代码中的一个或多个软件模块，来向第二无线设备发送信号。
通信接口404，使用任何收发器一类的装置，用于与其它设备或通信网络通信，如以太网，无线接入网(radio access network，RAN)，无线局域网(wireless local area networks，WLAN)等。
在具体实现中，作为一种实施例，无线设备可以包括多个处理器，例如图4中所示的处理器401和处理器405。这些处理器中的每一个可以是一个单核(single-CPU)处理器，也可以是一个多核(multi-CPU)处理器。这里的处理器可以指一个或多个设备、电路、和/或用于处理数据(例如计算机程序指令)的处理核。
在具体实现中，作为一种实施例，无线设备还可以包括输出设备406和输入设备407。输出设备406和处理器401通信，可以以多种方式来显示信息。例如，输出设备406可以是液晶显示器(liquid crystal display，LCD)、发光二级管(light emitting diode，LED)显示设备、阴极射线管(cathode ray tube，CRT)显示设备或投影仪(projector)等。输入设备407和处理器401通信，可以以多种方式接收用户的输入。例如，输入设备407可以是鼠标、键盘、触摸屏设备或传感设备等。
上述的无线设备可以是一个通用无线设备或者是一个专用无线设备。在具体实现中，无线设备可以是RFID读写器、中心基站、无线AP、RFID标签、NB-IoT终端或手机终端，本申请实施例不限定无线设备的类型。
接下来对本申请实施例提供的信号发送方法进行介绍。
图5是本申请实施例提供的一种信号发送方法的流程图，该方法可以应用于上述的信号发送系统包括的第一无线设备中，参见图5，该方法包括：
步骤501：通过智能反射面向第二无线设备发送第一信号。
在一种实现方式中，第一无线设备向智能反射面发送初始配置信息，通过该初始配置信息对该智能反射面包括的多个阵元的开关状态进行初始配置，并通过初始配置后的智能反射面向第二无线设备发送第一信号。
示例性地，第一无线设备首先可以生成用于对多个阵元进行配置的初始配置信息，进而将该初始配置信息发送至智能反射面。
其中，第一无线设备可以获取待配置阵元的数量，并根据待配置阵元的数量获取原始配置数据，该原始配置数据包括与待配置阵元的数量相同位数的比特数据，其中，每位比特数据对应一个待配置阵元。在得到原始配置数据之后，第一无线设备可以根据原始配置数据中各个比特数据之间的分布规律确定配置模式，并根据该原始配置数据和配置模式生成配置内容。另外，第一无线设备还可以确定起始的待配置阵元，之后，根据配置模式，起始的待配置阵元、配置内容生成初始配置信息。
需要说明的是，该原始配置数据可以预先存储在第一无线设备中，示例性地，该原始配置数据中的每个比特数据均为0。
可选地，第一无线设备也可以通过仿真软件来获取该原始配置数据。
需要说明的是，在本申请实施例中，可以根据现实场景中第一无线设备、多个第二无线设备以及智能反射面包括的各个阵元的三维坐标，通过仿真软件对第一无线设备、多个第二无线设备以及智能反射面之间的无线通信过程进行仿真，以此来生成多个配置数据。基于此，第一无线设备可以从该多个配置数据中获取一个配置数据作为原始配置数据。
示例性地，仿真软件获取第一无线设备、多个第二无线设备以及智能反射面包括的各个阵元的三维坐标，模拟为智能反射面包括的多个阵元配置第1个配置数据w1。之后，获取第1个设备集合，该第1个设备集合包括全部的第二无线设备。之后，根据第一无线设备、第1个设备集合中的每个第二无线设备以及智能反射面的三维坐标对第一无线设备、第1个设备集合中的多个第二无线设备以及智能反射面之间的无线通信过程进行仿真，并计算仿真通信过程中第1个设备集合中的每个第二无线设备接收到的第一无线设备发送的电磁波信号的能量值，得到的第1个能量值集合为：其中，M表示第1个设备集合中的第二无线设备的数量，m表示M个第二无线设备中的第m个第二无线设备，表示在为智能反射面包括的多个阵元配置第1个配置数据w1时，第m个第二无线设备接收到的第一无线设备发送的电磁波的能量值。
在得到第1个能量值集合之后，将第一能量值集合中大于能量阈值的能量值删除，得到更新后的第1个能量值集合并根据更新后的第1个能量值集合中的能量 值构造损失函数，得到的损失函数为之后，通过下述公式(1)计算第2个配置数据w2：
其中，η为预设系数，用于控制对进行迭代的次数，表示对Q求梯度。
在得到第2个配置数据w2之后，模拟为智能反射面包括的多个阵元配置第2个配置数据w2，并根据更新后的第1个能量值集合对第1个设备集合进行更新，得到第2个设备集合，其中，该第2个设备集合包括更新后的第1个能量值集合中的能量值所对应的第二无线设备。之后，仿真软件可以参考前述介绍的方法，基于第2个设备集合中的第二无线设备的三维坐标、该智能反射面的三维坐标和第一无线设备的三维坐标再次进行通信过程的模拟，进而基于第2个设备集合中各个第二无线设备接收到的第一无线设备发送的电磁波信号的能量值来计算第3个配置数据。以此类推，直至在得到第n个配置数据之后，基于更新后的第n-1个能量值集合中的能量值确定的第n个设备集合为空时，也即，更新后的第n-1个能量值集合为空时，停止仿真。此时，计算得到的n个配置数据即为该仿真软件生成的多个配置数据。
在得到原始配置数据之后，第一无线设备可以从原始配置数据的最高位比特数据开始，确定该原始配置数据包括的多个比特数据的分布规律，进而基于该分布规律来确定配置模式。其中，配置模式用于指示配置内容中的每个比特数据所对应的待配置阵元的数量。示例性地，配置模式可以为第一数值。
例如，假设从原始配置数据的最高位比特数据开始，以3个比特数据为一个块进行划分之后，每个块中的3个比特数据均相同，此时，则可以确定配置模式为3，此时，该配置模式用于指示每个比特数据用于配置3个待配置阵元。
另外，在本申请实施例中，第一数值可以采用一个3bit的二进制数进行表示。例如，当多个比特数据中的每个比特数据对应一个阵元时，则配置模式可以用000进行表示，假设每个比特数据对应两个阵元，则配置模式可以用001进行表示，以此类推。
第一无线设备在确定出配置模式之后，可以根据配置模式，从原始配置数据的最高位比特数据开始将该原始配置数据划分为多个块，每个块中包括的比特数据的位数就等于第一数值。之后，从每个块中获取一个比特数据，并将获取的各个比特数据按照所对应的块的顺序进行排列，从而得到配置内容。
示例性地，假设第一数值为2，原始配置数据为0011 0011 1111 1100 1，则可以从最高位比特数据开始，将该原始配置数据划分为9个块，分别为00 11 00 11 11 11 11 00 1，之后，按照各个块的顺序，从每个块中取一个数据，得到的配置内容为0101 1110 1。
第一无线设备在得到配置内容之后，还可以确定配置内容中包括的比特数据的位数，也即，确定配置内容的长度。相应地，初始配置信息中还可以包括该配置内容的长度。
例如，配置内容为0101 1110 1，其包括的比特数据的位数为9，此时，该配置内容的长度即为9，相应地，初始配置信息中可以包括用二进制数00 0001 0001表示的该配置内容的长度。
另外，在本申请实施例中，每个阵元中具有身份标识号(Identity document，ID)，各个阵元的ID可以为相应阵元的编号，且多个阵元的编号连续。或者，多个阵元也可以被划分成多个阵元块，每个阵元块中包括的阵元的标识相同。基于此，第一无线设备在确定出起始的待 配置阵元之后，可以将起始的待配置阵元的ID转化为二进制数。例如，要将ID为9的阵元作为起始的待配置阵元，则可以用二进制数00 0000 1001来指示该起始的待配置阵元。
可选地，在对各个阵元的通断状态进行初始配置之前，第一无线设备还可以先为每个阵元写入ID。
示例性地，当第一无线设备为RFID读写器时，该第一无线设备可以采用ISO18000-6C协议将为每个阵元配置的ID写入相应阵元的无源IC中，其中，阵元的ID可以为0-1023之间的任一整数。
需要说明的是，在本申请实施例中，当多个阵元被划分为多个阵元块时，初始配置信息中的配置模式则可以不根据原始配置数据来确定，而是可以根据多个阵元块中包括的阵元数量来确定，此时，该配置模式可以与每个阵元块包括的阵元数量相同，也即，该配置模式用于指示一个比特数据为一个阵元块进行配置。或者，原始配置数据包括的比特数据的位数可以等于阵元块的数量，第一无线设备仍然采用前述介绍的方式来确定配置模式，此时，该配置模式即用于指示一个比特数据所要配置的阵元块的数量。
在本申请实施例中，上述的第一无线设备可以为无线射频识别RFID读写器，第二无线设备为RFID标签。在第一无线设备为RFID读写器，第二无线设备为RFID标签的情况下，第一无线设备在生成初始配置信息之后，可以利用RFID读写器命令来承载该初始配置信息。其中，该RFID读写器命令可以为ISO18000-6C协议定义的命令中为客户或制造商保留的命令。
需要说明的是，第一无线设备可以根据RFID读写器命令中各个字段的长度要求来承载初始配置信息中不大于相应字段的长度要求的内容。除此之外，该RFID读写器命令还包括命令码字和验证内容。其中，命令码字用于指示该初始配置信息为对智能反射面中的各个阵元开关状态进行配置的配置命令，例如，1110 0000 0100 1011。该验证内容根据该RFID读写器命令所承载的该验证内容之外的其他内容生成，用于后续智能反射面验证该命令的真伪。
示例性地，假设确定出的原始配置数据为0011 0101 1101 1100 1，对ID为1-17的阵元进行初始配置时，RFID读写器向智能反射面发送的初始配置信息可以如下表1所示：
表1初始配置信息1
如表1中所示，配置模式为000，也即，配置内容中的每个比特数据用于配置一个阵元。配置内容为0011 0101 1101 1100 1，00 0001 0001表示配置内容长度为17，也即，配置内容中包括17个比特数据，00 0000 0001表示从ID为1的阵元开始配置。
示例性地，假设确定出的原始配置数据为0011 0011 1111 1100 1时，对ID为1-17的阵元进行初始配置时，RFID读写器向智能反射面发送的初始配置信息可以如下表2所示：
表2初始配置信息2
如表2中所示，配置模式为001，也即，配置内容中的每个比特数据用于配置两个阵元，这样，基于原始配置数据得到的配置内容为0101 1110 1。00 0000 1001表示配置内容的长度9，也即，包括9个比特数据。00 0000 0001表示从ID为1的阵元开始配置。
示例性地，假设确定出的原始配置数据为0000 1111 1111 0000 1时，对ID为1-17的阵元进行初始配置时，RFID读写器向智能反射面发送的初始配置信息可以如下表3所示：
表3初始配置信息3
如表3中所示，配置模式为010，也即，配置内容中的每个比特数据用于配置四个阵元，基于原始配置数据得到的配置内容为0110 1，00 0000 0101表示配置内容的长度为5，也即，配置内容中包括5个比特数据，00 0000 0001表示从ID为1的阵元开始配置。
示例性地，当原始配置数据为0000，对ID为9-12的阵元进行初始配置时，RFID读写器向智能反射面发送的初始配置信息可以如下表4所示：
表4初始配置信息4
如表4中所示，配置模式为010，也即，配置内容中每个比特数据对应四个阵元。基于原始配置数据得到的配置内容为0。00 0000 0001表示配置内容的长度为1，也即，配置内容中包括1个比特数据，00 0000 1001表示从ID为9的阵元开始配置。
第一无线设备在生成初始配置信息之后，可以将初始配置信息发送至智能反射面，相应地，智能反射面接收第一无线设备发送的初始配置信息，并根据初始配置信息控制各个阵元 的开关状态。
在一种实现方式中，由前述介绍可知，该智能反射面不包括控制器，该多个阵元中的每个阵元包括无源IC，无源IC包括幅相控制电路和信令通信电路。基于此，第一无线设备可以向每个阵元的信令通信电路发送初始配置信息，相应地，各个阵元的信令通信电路接收第一无线设备发送的初始配置信息，并基于初始配置信息对自身对应的幅相控制电路的开关状态进行初始配置。
示例性地，以任一阵元为例，该阵元的信令通信电路在接收到第一无线设备发送的初始配置信息之后，可以根据初始配置信息中包括的配置模式、配置内容中包括的比特数据的位数、起始的待配置阵元的ID以及配置内容，从配置内容中确定出自身所对应的比特数据，并根据自身所对应的比特数据控制自身的幅相控制电路的开关状态。如果该阵元的信令通信电路从配置内容中确定出自身所对应的比特数据为1，则控制该阵元的幅相控制电路处于开启状态，如果信令通信电路从配置内容中确定出的自身所对应的比特数据为0，则控制幅相控制电路处于关闭状态。
例如，假设信令通信电路接收到的初始配置信息中的配置模式为001，起始的待配置阵元为00 0000 0000，配置内容为0 1011 1101，配置内容包括的比特数据的位数为00 0000 1001，自身的ID为8，由于001表示一个比特数据对应两个阵元，00 0000 1001表示配置内容中包括9位比特数据，00 0000 0001表示ID为1的阵元为起始的待配置阵元，因此，信令通信电路根据自身的ID可以确定出配置内容中从最高位比特数据开始的第四位比特数据即为自身所对应的比特数据，也即自身对应的比特数据为1，此时，信令通信电路可以控制对应的幅相控制电路处于开启状态。
可选地，在初始配置信息通过RFID读写器命令承载的情况下，信令通信电路在接收到该命令之后，首先提取该命令中的命令码字，基于该命令码字确定该命令中携带有用于控制幅相控制电路的开关状态的配置信息。之后，信令通信电路提取该命令中除验证内容之外的其他内容，进而根据提取到的内容生成待比对验证内容，并将待比对验证内容与接收到的命令中的验证内容进行比较，如果二者相同，则说明该命令是正确指令，此时，可以参考上述方式从配置内容中获取自身所对应的比特数据，如果不同，则说明该初始配置信息为错误指令，此时，可以向第一无线设备发出初始配置信息错误的提示信息。
在另一种实现方式中，由前述介绍可知，智能反射面包括控制器和多个阵元，该多个阵元中的每个阵元包括有幅相控制电路。在此基础上，第一无线设备可以向智能反射面的控制器发送初始配置信息。控制器在接收到初始配置信息后，根据该初始配置信息对多个阵元中的每个阵元的开关状态进行初始配置。
示例性地，控制器可以根据初始配置信息中包括的配置模式、起始的待配置阵元的ID、配置内容中包括的比特数据的位数、配置内容以及每个阵元的ID，从配置内容中确定出各个阵元所对应的比特数据，并根据确定出的各个阵元所对应的比特数据对各个阵元包括的幅相控制电路的开关状态进行初始配置。
其中，控制器从初始配置信息包括的配置内容中确定出各个阵元所对应的比特数据的确定方式可以参考上述信令通信电路从初始配置信息包括的配置内容中确定出自身所对应的比特数据的确定方式，本申请实施例在此不再赘述。
第一无线设备在向智能反射面发送初始配置信息之后，向该智能反射面发送第一信号， 智能反射面中的多个阵元通过天线接收第一信号，并由天线将该第一信号传输至幅相控制电路。幅相控制电路在接收到第一信号之后，可以基于自身当前的开关状态对第一信号的相位和/或幅度进行调整。之后，将调整后的第一信号发送至第二无线设备。
其中，幅相控制电路基于初始配置后自身的开关状态对接收到的第一信号的相位和/或幅度进行调整的实现过程可以参考上述幅相控制电路基于调整信息调整后自身的开关状态对第二信号的相位和/或幅度进行调整的具体实现过程，本申请实施例在此不再赘述。
另外，在本申请实施例中，当第一无线设备为RFID读写器，第二无线设备为RFID标签时，第一信号可以为RFID读写器对RFID标签进行盘点的盘点命令。
当第一无线设备为NB-IoT中的基站，第二无线设备为NB-IoT终端时，该第一信号可以为数据获取命令。例如，当该NB-IoT终端为燃气表时，该数据获取命令可以用于获取燃气表中记录的燃气数据。
当第一无线设备还可以为无线AP，第二无线设备为通过该无线AP接入网络的终端设备时，该第一信号可以为诸如探测信号、测试信号之类的待终端设备响应的信号，本申请实施例对此不做限定。
上述介绍了第一无线设备在对智能反射面进行初始配置之后，进而通过初始配置的智能反射面发送第一信号的实现过程。可选地，在另一种实现方式中，第一无线设备也可以不对智能反射面进行初始配置，而是直接通过该智能反射面向第二无线设备发送第一信号。在这种情况下，智能反射面中的各个阵元在接收到第一信号之后，可以基于当前时刻自身的开关状态对第一信号的相位和/或幅度进行调整，并将调整后的第一信号发送至第二无线设备。
步骤502：基于第二无线设备对第一信号的响应情况，向智能反射面发送调整信息。
第一无线设备在智能反射面向第二无线设备发送第一信号之后，可以实时检测是否接收到第二无线设备对该第一信号的响应信号，以此来确定第二无线设备对第一信号的响应情况，进而基于该响应情况向智能反射面发送调整信息。
示例性地，如果第一无线设备未接收到第二无线设备对第一信号的响应信号，则基于初始配置信息，向智能反射面发送调整信息。
其中，第一无线设备可以在将第一信号发送出去时开始计时，如果在预设时长内未接收到第二无线设备对第一信号的响应信号，则确定第二无线设备未响应。在这种情况下，第一无线设备即可以基于初始配置信息来生成调整信息，进而向智能反射面发送该调整信息。
示例性地，第一无线设备可以获取初始配置信息中的配置内容，对该配置内容进行修改，从而得到修改后的配置内容。之后，基于该修改后的配置内容生成调整信息。
例如，第一无线设备可以确定出初始配置信息中的配置内容所对应的原始配置数据，之后，将该原始配置数据加1，得到修改后的配置数据。之后，第一无线设备可以参考前述介绍的生成初始配置信息的方法基于该修改后的配置数据确定配置模式，基于该配置模式和修改后的配置数据得到修改后的配置内容，进而基于该修改后的配置内容和配置模式，生成调整信息。
可选地，由前述介绍可知，仿真软件可以生成多个配置数据，在这种情况下，第一无线设备也可以从多个配置数据中获取除原始配置数据之外的其他配置数据中的任一个配置数据，进而参考前述介绍的生成初始配置信息的方法，基于当前获取的配置数据生成调整信息。
在生成调整信息之后，第一无线设备可以参考前述介绍的方法向智能反射面发送该调整 信息，相应地，智能反射面可以基于该调整信息来控制多个阵元的开关状态。其中，基于调整信息来控制阵元开关状态的实现方式可以参考前述介绍的基于初始配置信息来控制阵元的开关状态的实现方式，本申请实施例在此不再赘述。
从步骤501中的介绍可知，第一无线设备在发送第一信号之前，也可以不向智能反射面发送初始配置信息，在这种情况下，第一无线设备在未接收到第二无线设备对第一信号的响应信号时，可以直接生成调整信息，并向智能反射面发送该调整信息。
需要说明的是，第一无线设备直接生成调整信息的具体实现方式可以参考上述第一无线设备生成初始配置信息的生成方式，本申请实施例在此不再赘述。
在另一种实现方式中，如果第一无线设备接收到第二无线设备对第一信号的响应信号，则可以基于响应信号的信号强度和初始配置信息，向智能反射面发送调整信息。
示例性地，第一无线设备可以在将第一信号发送出去时开始计时，如果在预设时长内接收到了第二无线设备对第一信号的响应信号，可以先确定该响应信号的信号强度，如果接收到的响应信号的信号强度不大于信号强度阈值，则可以参考上述基于初始配置信息来生成调整信息的实现方式来生成调整信息。之后，向智能反射面发送该调整信息。如果该响应信号的信号强度大于信号强度阈值，则可以停止向智能反射面发送调整信息。
可选地，在第一无线设备在发送第一信号之前，不向智能反射面发送初始配置信息的情况下，如果接收到的响应信号的信号强度不大于信号强度阈值，则可以参考前述介绍的生成初始配置信息的方式生成对智能反射面包括的所有阵元的开关状态进行调整的调整信息。之后，向智能反射面发送该调整信息。
步骤503：通过调整后的智能反射面向第二无线设备发送第二信号。
第一无线设备在向智能反射面发送调整信息之后，可以向智能反射面发送第二信号，相应地，根据该调整信息进行调整后的智能反射面在接收到第二信号后，可以对第二信号的相位和/或幅度进行调整。之后，将调整后的第二信号发送至第二无线设备。
后续，第一无线设备可以继续检测第二无线设备对第二信号的响应情况，进而基于该响应情况决定是否继续对智能反射面进行调整。如果继续对智能反射面进行调整，则第一无线设备可以参考步骤502的方式再次向智能发射面发送调整信息，此时，发送的调整信息和之前的调整信息、初始配置信息均不同。之后，第一无线设备可以继续通过调整后的智能反射面向第二无线设备发送信号，以此类推。
在本申请实施例中，由于智能反射面包括的多个阵元的不同开关状态能够对第一无线设备发送的无线信号的相位和/或幅度进行不同的调整。因此，根据第二无线设备对第一无线设备发送的第一信号的响应情况来对智能反射面包括的多个阵元的开关状态进行调整，能够将多个阵元中的每个阵元调整至更合适的开关状态，进而使多个阵元能够将第一无线设备发送的第二信号调整至更合适的相位，以降低第二信号因受到多个反射物的反射而出现深度衰减的概率，这样，可以提高第一无线设备与第二无线设备之间的通信效果。
另外，本申请实施例的智能反射面包括的多个阵元中的每个阵元中包括有无源IC，无源IC中设置有信令通信电路，可以通过信令通信电路对对应的幅相控制电路的开关状态进行调整，这样，可以就无需在智能反射面中设置控制器，降低了智能反射面的生产成本。
再者，每个阵元包括的无源IC中还设置有能量收集电路，该能量收集电路可以收集周边环境中的电磁波的能量，并利用收集到的能量向幅相控制电路和信令通信电路供电，使智能 反射面无需外部电源进行供电，不仅降低了使用成本，而且增强了智能反射面的易部署性。
最后，本申请实施例的智能反射面包括的阵元中的基板的绝缘层的材料可以为柔性材料，例如，塑料或纸，这样，不仅降低了智能反射面的生产成本，而且增强了智能反射面的易部署性。
接下来以第一无线设备为部署于仓库中RFID读写器，第二无线设备为部署于同一仓库的RFID标签，RFID读写器对RFID标签进行盘点的场景为例，对上述提供的信号发送方法进行示例性的说明。其中，智能反射面为如图2所示的智能反射面，该智能反射面可以部署于仓库顶部，或者，也可以部署于仓库内的墙壁上，或者是仓库中的货架上。
参考图6，RFID读写器在对RFID标签进行盘点之前，可以向智能反射面发送初始配置信息，以使智能反射面根据初始配置信息对自身的多个阵元的通断状态进行配置。之后，RFID读写器从自身存储的多个RFID标签的标识中确定出一个待盘点的RFID标签的标识，并将该标识所对应的RFID标签作为待盘点的RFID标签，其中，RFID标签的标识可以为该RFID标签的ID。之后，发送携带有该待盘点的RFID标签的标识的盘点命令，并在盘点命令发送出去时开始计时，如果在预设时长内接收到了该待盘点的RFID标签的响应信号，则说明已经盘点到了该RFID标签，如果在预设时长内未接收到该待盘点RFID标签的响应信号，则说明未盘点到该RFID标签。之后，第一无线设备可以继续从自身存储的多个RFID标签的标识中再获取一个RFID标签的标识，并将该标识所对应的RFID标签作为新的待盘点的RFID标签，并再次发送携带有该新的待盘点的RFID标签的标识的盘点命令，重复上述过程至盘点完所有RFID标签。
在盘点完所有RFID标签之后，RFID读写器可以确定是否已盘点到了所有RFID标签，如果确认接收到了所有RFID标签的响应信号，也即，盘点到了所有RFID标签，则结束盘点过程。如果确定未接收到至少一个RFID标签的响应信号，则向智能反射面发送调整信息，以使智能反射面可以基于调整信息对自身包括的多个阵元的通断状态进程调整。之后，RFID读写器可以再次对所有RFID标签进行盘点，也可以对之前未盘点到的RFID标签进行盘点，至盘点到所有RFID标签，或者发送完所有可能的调整信息为止。
接下来对本申请实施例提供的信号发送装置进行介绍。
参见图7，本申请实施例提供了一种信号发送装置700，该装置700可以应用于上述的信号发送系统包括的第一无线设备中，该装置包括发送模块701和调整模块702。
发送模块701，用于执行上述实施例中的步骤501和503；
调整模块702，用于执行上述实施例中的步骤502。
可选地，发送模块701用于：
向智能反射面发送初始配置信息，初始配置信息用于对多个阵元的开关状态进行初始配置；
通过初始配置后的智能反射面向第二无线设备发送第一信号。
可选地，调整模块702用于：
在未接收到第二无线设备对第一信号的响应信号的情况下，基于初始配置信息，向智能反射面发送调整信息。
可选地，调整模块702用于：
在接收到第二无线设备对第一信号的响应信号的情况下，基于响应信号的信号强度和初始配置信息，向智能反射面发送调整信息。
可选地，调整信息包括配置内容、配置模式、待配置阵元的数量和起始的待配置阵元，配置内容包括为待配置阵元配置的多个比特数据，配置模式用于指示多个比特数据中的每个比特数据所对应的待配置阵元。
可选地，第一无线设备为无线射频识别RFID读写器，第二无线设备为RFID标签。
可选地，多个阵元中的每个阵元包括无源集成电路IC，无源IC包括幅相控制电路和信令通信电路；
调整模块702具体用于：
向每个阵元的信令通信电路发送调整信息，信令通信电路用于基于调整信息控制幅相控制电路的开关状态，幅相控制电路用于在不同状态下，对待发送的信号的相位和/或幅度进行不同的调整。
可选地，无源IC还包括能量收集电路，能量收集电路用于收集周边环境中的电磁波的能量，并利用收集到的能量向幅相控制电路和信令通信电路供电。
综上所述，本申请实施例中，智能反射面可以接收第一无线设备发送的调整信息，并根据调整信息对自身的开关状态进行调整，由于该调整信息是第一无线设备基于第二无线设备对第一无线设备发送的第一信号的响应情况发送的，因此，该调整信息可以将智能反射面包括的多个阵元调整至更合适的开关状态，进而使多个阵元能够将接收到的第一无线设备发送的第二信号调整至更合适的相位，以减弱第二信号因受到多个反射物的反射而出现的信号衰减，提高第一无线设备与第二无线设备之间的通信效果。另外，智能反射面包括的多个阵元中的每个阵元均能够接收第一无线设备发送的调整信息，并基于调整信息对自身的开关状态进行调整，这样，就无需在智能反射面中设置控制器来接收调整信息，降低了智能反射面的生产成本。
需要说明的是：上述实施例提供的信号发送装置在发送信息时，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将设备的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。另外，上述实施例提供的信号发送装置与信号发送方法实施例属于同一构思，其具体实现过程详见方法实施例，这里不再赘述。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意结合来实现。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、数据用户线(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：数字通用光盘(digital versatile disc，DVD))、或者半导体介质(例如：固态硬盘(solid state disk，SSD))等。
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通过硬件来完成，也可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，上述提到的存储介质可以是只读存储器，磁盘或光盘等。
以上所述为本申请提供的实施例，并不用以限制本申请实施例，凡在本申请实施例的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请实施例的保护范围之内。

Claims (23)

  1. 一种智能反射面，其特征在于，所述智能反射面包括多个阵元；
    所述多个阵元中的每个阵元用于在接收到第一无线设备发送的第一信号的情况下，向第二无线设备发送所述第一信号；接收所述第一无线设备发送的调整信息，所述调整信息为所述第一无线设备基于所述第二无线设备对所述第一信号的响应情况发送；基于所述调整信息对自身的开关状态进行调整；在接收到所述第一无线设备发送的第二信号的情况下，向所述第二无线设备发送所述第二信号。
  2. 根据权利要求1所述的智能反射面，其特征在于，所述多个阵元中的每个阵元包括无源集成电路IC，所述无源IC包括幅相控制电路和信令通信电路，所述信令通信电路和所述幅相控制电路连接；
    所述信令通信电路用于接收所述调整信息，并基于所述调整信息控制所述幅相控制电路的开关状态；
    所述幅相控制电路用于在开启状态下，对待发送的信号的相位和/或幅度进行调整。
  3. 根据权利要求2所述的智能反射面，其特征在于，所述无源IC还包括能量收集电路，所述能量收集电路分别与所述信令通信电路、所述幅相控制电路连接；
    所述能量收集电路用于收集周边环境中的电磁波的能量，并利用收集到的能量向所述幅相控制电路和所述信令通信电路供电。
  4. 根据权利要求2或3所述的智能反射面，其特征在于，每个阵元还包括天线，所述天线用于发射所述幅相控制电路调整后的信号。
  5. 根据权利要求4所述的智能反射面，其特征在于，所述天线包括金属贴片和基板，所述基板包括绝缘层和金属层，所述无源IC的一端与所述金属贴片连接，所述无源IC的另一端穿过所述基板的绝缘层与所述基板的金属层连接。
  6. 根据权利要求5所述的智能反射面，其特征在于，所述基板的绝缘层的材料为柔性材料。
  7. 一种信号发送方法，其特征在于，应用于第一无线设备，所述方法包括：
    通过智能反射面向第二无线设备发送第一信号，所述智能反射面包括多个阵元；
    基于所述第二无线设备对所述第一信号的响应情况，向所述智能反射面发送调整信息，所述调整信息用于调整所述多个阵元的开关状态；
    通过调整后的所述智能反射面向所述第二无线设备发送第二信号。
  8. 根据权利要求7所述的方法，其特征在于，所述通过智能反射面向第二无线设备发送 第一信号，包括：
    向所述智能反射面发送初始配置信息，所述初始配置信息用于对所述多个阵元的开关状态进行初始配置；
    通过初始配置后的所述智能反射面向所述第二无线设备发送所述第一信号。
  9. 根据权利要求8所述的方法，其特征在于，所述基于所述第二无线设备对所述第一信号的响应情况，向所述智能反射面发送调整信息，包括：
    在未接收到所述第二无线设备对所述第一信号的响应信号的情况下，基于所述初始配置信息，向所述智能反射面发送所述调整信息。
  10. 根据权利要求8所述的方法，其特征在于，所述基于所述第二无线设备对所述第一信号的响应情况，向所述智能反射面发送调整信息，包括：
    在接收到所述第二无线设备对所述第一信号的响应信号的情况下，基于所述响应信号的信号强度和所述初始配置信息，向所述智能反射面发送所述调整信息。
  11. 根据权利要求7-10任一所述的方法，其特征在于，所述调整信息包括配置内容、配置模式、待配置阵元的数量和起始的待配置阵元，所述配置内容包括为所述待配置阵元配置的多个比特数据，所述配置模式用于指示所述多个比特数据中的每个比特数据所对应的待配置阵元。
  12. 根据权利要求7-11任一所述的方法，其特征在于，所述第一无线设备为无线射频识别RFID读写器，所述第二无线设备为RFID标签。
  13. 根据权利要求7-12任一所述的方法，其特征在于，所述多个阵元中的每个阵元包括无源集成电路IC，所述无源IC包括幅相控制电路和信令通信电路；
    所述向所述智能反射面发送所述调整信息，包括：
    向每个阵元的信令通信电路发送所述调整信息，所述信令通信电路用于基于所述调整信息控制所述幅相控制电路的开关状态，所述幅相控制电路用于在不同状态下，对待发送的信号的相位和/或幅度进行不同的调整。
  14. 根据权利要求13所述的方法，其特征在于，所述无源IC还包括能量收集电路，所述能量收集电路用于收集周边环境中的电磁波的能量，并利用收集到的能量向所述幅相控制电路和所述信令通信电路供电。
  15. 一种信号发送装置，其特征在于，应用于第一无线设备，所述装置包括：
    发送模块，用于通过智能反射面向第二无线设备发送第一信号，所述智能反射面包括多个阵元；
    调整模块，用于基于所述第二无线设备对所述第一信号的响应情况，向所述智能反射面发送调整信息，所述调整信息用于调整所述多个阵元的开关状态；
    所述发送模块，还用于通过调整后的所述智能反射面向所述第二无线设备发送第二信号。
  16. 根据权利要求15所述的装置，其特征在于，所述发送模块用于：
    向所述智能反射面发送初始配置信息，所述初始配置信息用于对所述多个阵元的开关状态进行初始配置；
    通过初始配置后的所述智能反射面向所述第二无线设备发送所述第一信号。
  17. 根据权利要求16所述的装置，其特征在于，所述调整模块用于：
    在未接收到所述第二无线设备对所述第一信号的响应信号的情况下，基于所述初始配置信息，向所述智能反射面发送所述调整信息。
  18. 根据权利要求16所述的装置，其特征在于，所述调整模块用于：
    在接收到所述第二无线设备对所述第一信号的响应信号的情况下，基于所述响应信号的信号强度和所述初始配置信息，向所述智能反射面发送所述调整信息。
  19. 根据权利要求15-18任一所述的装置，其特征在于，所述调整信息包括配置内容、配置模式、待配置阵元的数量和起始的待配置阵元，所述配置内容包括为所述待配置阵元配置的多个比特数据，所述配置模式用于指示所述多个比特数据中的每个比特数据所对应的待配置阵元。
  20. 根据权利要求15-19任一所述的装置，其特征在于，所述第一无线设备为无线射频识别RFID读写器，所述第二无线设备为RFID标签。
  21. 根据权利要求15-20任一所述的装置，其特征在于，所述多个阵元中的每个阵元包括无源集成电路IC，所述无源IC包括幅相控制电路和信令通信电路；
    所述调整模块具体用于：
    向每个阵元的信令通信电路发送所述调整信息，所述信令通信电路用于基于所述调整信息控制所述幅相控制电路的开关状态，所述幅相控制电路用于在不同状态下，对待发送的信号的相位和/或幅度进行不同的调整。
  22. 根据权利要求21所述的装置，其特征在于，所述无源IC还包括能量收集电路，所述能量收集电路用于收集周边环境中的电磁波的能量，并利用收集到的能量向所述幅相控制电路和所述信令通信电路供电。
  23. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质中存储有指令，当所述指令在计算机上运行时，使得所述计算机执行权利要求7-14任一所述的信号发送方法。
PCT/CN2023/083400 2022-03-28 2023-03-23 智能反射面、信号发送方法、装置及存储介质 WO2023185631A1 (zh)

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