WO2024120238A1 - 通信方法、系统和装置 - Google Patents

通信方法、系统和装置 Download PDF

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Publication number
WO2024120238A1
WO2024120238A1 PCT/CN2023/134367 CN2023134367W WO2024120238A1 WO 2024120238 A1 WO2024120238 A1 WO 2024120238A1 CN 2023134367 W CN2023134367 W CN 2023134367W WO 2024120238 A1 WO2024120238 A1 WO 2024120238A1
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WIPO (PCT)
Prior art keywords
frequency
excitation signal
configuration
frequency configuration
modulation
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PCT/CN2023/134367
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English (en)
French (fr)
Inventor
李帅
吴毅凌
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to EP23899817.3A priority Critical patent/EP4618668A4/en
Publication of WO2024120238A1 publication Critical patent/WO2024120238A1/zh
Priority to US19/230,606 priority patent/US20250301460A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/001—Energy harvesting or scavenging
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/50—Circuit arrangements or systems for wireless supply or distribution of electric power using additional energy repeaters between transmitting devices and receiving devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/40—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries characterised by the exchange of charge or discharge related data
    • H02J7/42—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries characterised by the exchange of charge or discharge related data with electronic devices having internal batteries, e.g. mobile phones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/12—Modulator circuits; Transmitter circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks

Definitions

  • the present application relates to the field of communication technology, and more specifically, to a communication method, system and apparatus related to device charging.
  • the present application provides a communication method, system, and apparatus, etc., for charging a passive device, which can improve the efficiency of charging the passive device.
  • a communication method comprising: at least two active devices sending an excitation signal to a passive device in a first time period, wherein the at least two active devices include a first active device and a second active device, and the excitation signal is used to charge the passive device; at least two active devices sending an excitation signal to a passive device in the first time period comprises: the first active device sending a first excitation signal to the passive device in the first time period; the second active device sending a second excitation signal to the passive device in the first time period; wherein a first frequency configuration corresponding to the first excitation signal is different from a second frequency configuration corresponding to the second excitation signal.
  • At least two active devices can simultaneously send excitation signals corresponding to different frequency configurations to the passive device, which can reduce the possibility of power cancellation when different excitation signals reach the passive device, thereby improving the charging efficiency.
  • the at least two active devices before the at least two active devices send an excitation signal to the passive device in the first time period, the at least two active devices also include: the at least two active devices receive a first indication message from a centralized control device, the first indication message being used to instruct the at least two active devices to send the excitation signal to the passive device in the first time period. In some other implementations, before the at least two active devices send an excitation signal to the passive device in the first time period, the at least two active devices also include: the at least two active devices receive a second indication message from the centralized control device, the second indication message including a frequency configuration corresponding to the excitation signal.
  • the centralized control device can implement unified scheduling of multiple active devices through indication messages, and the active devices that accept unified scheduling by the centralized control device do not need to pre-configure relevant information about time or frequency.
  • the second indication message further includes identification information, and the identification information is used to indicate which active device the frequency configuration is available to.
  • the centralized control device can send frequency configurations of different active devices to the multiple active devices through one indication message, and each active device can determine its own available frequency configuration based on the correspondence between the identification information in the indication message and the frequency configuration, thereby improving the information transmission efficiency of the centralized control device.
  • a communication system comprising: a first active device and a second active device, wherein: the first active device is used to: send a first excitation signal for charging the passive device to a passive device in a first time period; the second active device is used to: send a second excitation signal for charging the passive device to the passive device in the first time period; wherein a first frequency configuration corresponding to the first excitation signal is different from a second frequency configuration corresponding to the second excitation signal.
  • At least two active devices can simultaneously send excitation signals corresponding to different frequency configurations to the passive device, which can reduce the possibility of power cancellation of different excitation signals, increase the signal power received by the passive device, and improve the charging efficiency.
  • the system further includes the passive device, which is used to receive the first excitation signal and the second excitation signal, so that the passive device can obtain energy from the excitation signal to achieve charging.
  • the first active device and the second active device are also used to: receive one or more of the following: a first indication message, the first indication message is used to instruct the first active device and the second active device to send the excitation signal to the passive device in the first time period; a second indication message, the second indication message includes a frequency configuration corresponding to the excitation signal.
  • the system further includes a centralized control device; the centralized control device is used to: send the first indication message or the second indication message to the first active device and the second active device.
  • the centralized control device can realize unified scheduling of multiple active devices through indication messages, and the active devices that accept unified scheduling by the centralized control device do not need to pre-configure relevant information of time or frequency.
  • a communication method comprising: an active device sends an excitation signal to a passive device in a first time period, wherein the excitation signal is used to charge the passive device.
  • the active device receives a first indication message from a centralized control device, wherein the first indication message is used to instruct the active device to send the excitation signal to the passive device in the first time period.
  • the active device receives a second indication message from the centralized control device, wherein the second indication message includes one or more parameters in a frequency configuration corresponding to the excitation signal.
  • a communication method comprising: a centralized control device sends a first indication message and/or a second indication message to one or more active devices, the first indication message being used to instruct the one or more active devices to send an excitation signal to a passive device in a first time period, the second indication message comprising one or more parameters in a frequency configuration corresponding to the excitation signal.
  • a device comprising modules for implementing the method provided in the third aspect or the fourth aspect.
  • a device including a processor and a memory, wherein the memory is used to store instructions, and the processor is used to execute the instructions to execute the method provided in the third aspect or the fourth aspect.
  • a computer-readable storage medium is also provided, wherein instructions are stored in the computer-readable storage medium.
  • the instructions are executed on a computer, the computer executes the method provided in the third aspect or the fourth aspect.
  • a computer program product comprising instructions is also provided.
  • the instructions are executed on a computer, the computer is caused to execute the method provided in the third aspect or the fourth aspect.
  • the first frequency configuration corresponding to the first excitation signal is different from the second frequency configuration corresponding to the second excitation signal, including: one or more parameters in the first frequency configuration are different from one or more parameters in the second frequency configuration.
  • one or more parameters in the first frequency configuration include a first frequency value, and the first excitation signal is a single-tone signal with a frequency of the first frequency value; one or more parameters in the second frequency configuration include a second frequency value, and the second excitation signal is a single-tone signal with a frequency of the second frequency value; the first frequency value is different from the second frequency value.
  • Different excitation signals are superimposed when they arrive at the passive device, and the superimposed signal has a spindle-shaped envelope in the time domain, and the PAPR is high, so that the charging efficiency is improved.
  • one or more parameters in the first frequency configuration include a first frequency value, and the first excitation signal is a single-tone signal with a frequency of the first frequency value;
  • one or more parameters in the second frequency configuration include a modulation order, a modulation symbol sequence, a modulation rate, and a frequency group including multiple frequency values, and the second excitation signal is a frequency shift keyed FSK signal corresponding to the modulation order, modulation symbol sequence, modulation rate, and frequency group in the second frequency configuration.
  • the FSK signal has a strong anti-interference ability, which is conducive to ensuring the signal power received by the passive device, thereby improving the charging efficiency.
  • one or more parameters in the first frequency configuration include a modulation order, a modulation symbol sequence, a modulation rate, and a frequency group including multiple frequency values
  • the first excitation signal is a frequency shift keyed FSK signal corresponding to the modulation order, modulation symbol sequence, modulation rate, and frequency group in the first frequency configuration
  • one or more parameters in the second frequency configuration include a modulation order, a modulation symbol sequence, a modulation rate, and a frequency group including multiple frequency values
  • the second excitation signal is an FSK signal corresponding to the modulation order, modulation symbol sequence, modulation rate, and frequency group in the second frequency configuration
  • the modulation order, modulation symbol sequence, modulation rate, or frequency group in the first frequency configuration is different from the modulation order, modulation symbol sequence, modulation rate, or frequency group in the second frequency configuration.
  • the frequency group in the first frequency configuration is different from the frequency group in the second frequency configuration, including: among the multiple frequency values included in the frequency group in the first frequency configuration, at least one frequency value is different from the multiple frequency values included in the frequency group in the second frequency configuration.
  • Both excitation signals are FSK signals with strong anti-interference ability, which can further ensure the signal power received by the passive device, thereby improving the charging efficiency.
  • one or more parameters in the first frequency configuration include a first frequency value, and the first excitation signal is a single-tone signal with a frequency of the first frequency value; one or more parameters in the second frequency configuration include multiple frequency values, and the second excitation signal is a multi-tone signal corresponding to the multiple frequency values in the second frequency configuration.
  • the multiple frequency values in the second frequency configuration are different from the first frequency value.
  • one or more parameters in the first frequency configuration include a modulation order, a modulation symbol sequence, a modulation rate, and a frequency group including multiple frequency values
  • the first excitation signal is a frequency shift keyed FSK signal corresponding to the modulation order, the modulation symbol sequence, the modulation rate, and the frequency group in the first frequency configuration
  • one or more parameters in the second frequency configuration include multiple frequency values
  • the second excitation signal is a multi-tone signal corresponding to the multiple frequency values in the second frequency configuration.
  • at least one frequency value is different from the frequency value in the first frequency configuration.
  • Multiple frequency values in the dual frequency configuration. The possibility of power cancellation between FSK signal and multi-tone signal is smaller, which can further ensure the signal power received by the passive device and improve the efficiency of charging the passive device.
  • one or more parameters in the first frequency configuration include multiple frequency values, and the first excitation signal is a multi-tone signal corresponding to the multiple frequency values in the first frequency configuration; one or more parameters in the second frequency configuration include multiple frequency values, and the second excitation signal is a multi-tone signal corresponding to the multiple frequency values in the second frequency configuration; among the multiple frequency values in the first frequency configuration, at least one frequency value is different from the multiple frequency values in the second frequency configuration.
  • the excitation signals sent by the two active devices are both multi-tone signals, which can further improve the PAPR of the signal received by the passive device and help improve the charging efficiency.
  • FIG1 is a schematic diagram of a communication system provided in an embodiment of the present application.
  • FIG. 2 is a schematic diagram of an integrated architecture applied in an embodiment of the present application.
  • FIG. 3 is a schematic diagram of a separation architecture applied in an embodiment of the present application.
  • FIG4 is a schematic diagram of another communication system provided in an embodiment of the present application.
  • FIG. 5 is a schematic flowchart of a communication method 500 provided in an embodiment of the present application.
  • FIG. 6 is a schematic diagram of an excitation signal provided in an embodiment of the present application.
  • FIG. 7 is a schematic diagram of sending and receiving signals provided in an embodiment of the present application.
  • FIG. 8 is a schematic diagram of another excitation signal provided in an embodiment of the present application.
  • FIG. 9 is a schematic diagram of another method of sending and receiving signals provided in an embodiment of the present application.
  • FIG. 10 is a schematic flowchart of another communication method 1000 provided in an embodiment of the present application.
  • FIG. 11 is a schematic diagram of an active device grouping provided in an embodiment of the present application.
  • FIG12 is a schematic diagram of another communication method provided in an embodiment of the present application.
  • FIG. 13 is a schematic block diagram of a communication device 1300 provided in an embodiment of the present application.
  • FIG. 14 is a schematic block diagram of another communication device 1400 provided in an embodiment of the present application.
  • FIG. 15 is a schematic diagram of a chip system 1500 provided according to an embodiment of the present application.
  • IoT devices include active devices and passive devices. Active devices and passive devices are powered in different ways. Active devices use their own batteries or connected power supplies, while passive devices usually need to obtain energy from electromagnetic wave signals in the environment for charging. For example, passive devices can be charged using electromagnetic wave signals from active devices, where the electromagnetic wave signals used to charge passive devices can be called charging signals or excitation signals. After receiving the excitation signal, the passive device converts the power of the excitation signal into power that can actually be used for signal transmission, reception and processing. The higher the signal power received by the passive device, the more energy it obtains and the higher the charging efficiency. Whether the efficiency of charging passive devices can be improved is the key to achieving large-scale application of passive devices.
  • the embodiments of the present application provide a communication method, system and apparatus, which can improve the efficiency of charging passive devices.
  • the embodiments of the present application can be applied to a variety of communication systems, including but not limited to radio frequency identification (RFID) systems, backscatter communication systems, passive IoT systems, long term evolution (LTE) systems, fifth generation (5G) new radio (NR) systems, LTE and 5G hybrid networking systems, non-terrestrial network (NTN) systems, device-to-device (D2D) communication systems, machine-to-machine (M2M) communication systems, wireless local area networks (WLAN), etc.
  • RFID radio frequency identification
  • LTE long term evolution
  • 5G new radio
  • NTN non-terrestrial network
  • D2D device-to-device
  • M2M machine-to-machine
  • WLAN wireless local area networks
  • the embodiments of the present application can also be applied to future communication systems, such as the sixth generation (6G) mobile communication system, etc.
  • FIG1 is a schematic diagram of a communication system 100 provided in an embodiment of the present application, the system comprising at least two active devices, such as a first active device 101-1, a second active device 101-2, etc.
  • the active device can send an excitation signal to the passive device to charge the passive device.
  • the active device also sends downlink data to the passive device, or sends a carrier signal for carrying uplink data to the passive device.
  • the active device can be a network device.
  • the network device is any network device that can wirelessly communicate with the terminal device or a chip or chip system that can be set in the network device, which can be used to implement wireless physical control functions, resource scheduling and wireless resource management, wireless access control, or mobility management functions.
  • the network device can be a device that supports wired access.
  • the network device may be a device supporting wireless access.
  • the network device may be an access network (AN)/radio access network (RAN) device, which is composed of one or more AN/RAN nodes.
  • AN access network
  • RAN radio access network
  • the AN/RAN node may be: a base station (nodeB, NB), a macro base station, a micro base station, a relay station, an enhanced base station (enhance nodeB, eNB), a next generation base station (NR nodeB, gNB), a radio network controller (radio network controller, RNC), a base station controller (base station controller, BSC), a base transceiver station (base transceiver station, BTS), a home base station (for example, a home evolved nodeB, a home nodeB, HNB)), a base band unit (base band unit, BBU), an access point (access point, AP), a wireless fidelity AP (wireless fidelity AP, Wi-Fi AP), a transmission reception point (transmission reception point, TRP), a transmission point (transmission point, TP), a wireless relay node, a wireless backhaul node in integrated access and backhaul (IAB) (i.e., an IAB node),
  • the active device may also be a terminal device.
  • the terminal device may be a device with a wireless transceiver function or a chip or chip system that can be set in the terminal device, and may also be called a user equipment (UE) or a terminal (terminal) or a mobile station (MS) or a mobile terminal (MT).
  • UE user equipment
  • MS mobile station
  • MT mobile terminal
  • the terminal device may be a handheld device with a wireless connection function, a vehicle-mounted device, etc., such as a mobile phone, a tablet computer, a notebook, a PDA, a computer with a wireless transceiver function, etc.
  • the terminal device may also be a mobile internet device (MID), a wearable device, a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, a vehicle terminal, a vehicle with vehicle-to-vehicle (V2V) communication capability, an intelligent networked vehicle, a drone with UAV to UAV (U2U) communication capability, etc., without limitation.
  • the terminal device may also be a reader/writer, reader, exciter, assistant, etc. in an RFID system or a backscatter communication system.
  • the communication system 100 also includes a passive device 102.
  • the passive device can communicate with the active device, wherein the direction from the active device to the passive device is called downlink, also known as forward; the direction from the passive device to the active device is called uplink, also known as backward.
  • the passive device can receive an excitation signal from the active device, obtain energy from it, and charge it.
  • the passive device can directly use the energy to send and receive and/or process signals, or a passive device with energy storage capacity can also store energy first and use it later when needed.
  • the passive device can also interact with the active device for data, for example, the passive device receives downlink data sent by the active device, and for another example, the passive device receives a carrier signal sent by the active device, and then modulates the uplink data on the carrier signal and backscatters it to the active device.
  • the way in which the passive device transmits uplink data can be called backscatter communication.
  • the passive device 102 may be any terminal device that can obtain energy from a signal sent by an active device, or a chip or chip system that can be set in the terminal device.
  • the passive device 102 may be a terminal device that does not generate a carrier signal itself, transmits uplink data through backscatter communication, and the reflected signal is not power amplified.
  • This type of terminal device usually does not include a battery, and may also be called a battery-free device, a passive device, etc.
  • a passive device may also be a terminal device that does not generate a carrier signal itself, transmits uplink data through backscatter communication, but can power amplify the reflected signal.
  • This type of terminal device usually has a certain energy storage capacity. This type of device with limited energy storage capacity may also be called a semi-passive device or a semi-active device, and is collectively referred to as a passive device in the various embodiments, systems, and scenarios of the present application.
  • the communication system 100 may be an RFID system.
  • the RFID system is based on contactless automatic identification technology and can be used to implement identity identification, and can also be used to implement user data reading and writing.
  • the passive device 102 may be a tag
  • the active device may be a reader under an integrated architecture, or a helper under a separate architecture.
  • the reader 201 provides energy to the tag 202 by sending an excitation signal to the tag 202, and the tag 202 receives the excitation signal sent by the reader 201 for charging.
  • the reader 201 may send downlink data to the tag 202, and the tag 202 sends uplink data to the reader 201 through a reflection signal. In this way, the reader 201 can identify the tag 202, and perform operations such as reading and writing on the tag 202.
  • the reader 201 may also be referred to as a read-write device, a reader, a reading device, etc.
  • the split architecture shown in FIG3 includes an auxiliary device 301, a receiver 302, and a tag 202.
  • the auxiliary device is responsible for sending an excitation signal to the tag 202
  • the receiver 302 is responsible for receiving a reflected signal from the tag 202.
  • the receiver 302 can send data to the auxiliary device 301 directly or indirectly, and the auxiliary device 301 forwards the data to the tag 202.
  • the auxiliary device 301 and the receiver 302 can be the parts of the same reader responsible for the sending function and the receiving function respectively, or they can be different readers.
  • the auxiliary device 301 can also be called an exciter, an excitation device, a radio frequency source, etc.
  • the communication system 100 may also be a passive Internet of Things system.
  • a passive Internet of Things system is a cellular Internet of Things system that supports passive devices.
  • the passive IoT communication system is aimed at the next-level IoT market that is more sensitive to the cost and power consumption of terminal devices, and is usually co-deployed with cellular networks.
  • passive devices and active devices can be implemented in a variety of ways.
  • a passive device can be an IoT device, such as a passive tag, a semi-passive tag, a backscattering terminal device, etc.
  • An active device can be a terminal device, such as a reader/writer, an exciter, a mobile phone, etc., or it can be an AN/RAN device or node in a cellular network, such as a base station, a macro base station, a micro base station, a relay station, an eNB, a gNB or other access node.
  • the passive IoT can also be called a passive IoT, an ambient IoT, an ambient power-enabled IoT, an ambient backscattering communication, etc.
  • the communication system 100 may further include a centralized control device 103.
  • the centralized control device 103 may control the active device by communicating with the active device.
  • the centralized control device may communicate directly with the active device, or communicate indirectly with the active device through other devices in the communication system.
  • the centralized control device may schedule the transmission resources used by the active device, control the behavior of the active device in sending and receiving signals, and may also exchange data between the active device and the passive device.
  • the communication between the centralized control device and the active device may adopt 5G NR technology or 5G sidelink (SL) technology.
  • the implementation of the centralized control device 103 can refer to the examples in the above network devices or terminal devices, which will not be repeated here.
  • the centralized control device can be a base station, a macro base station, a micro base station, an eNB, a gNB, etc.
  • FIG5 is a schematic flow chart of a communication method 500 provided in an embodiment of the present application, which can be applied to the above-mentioned communication system 100.
  • the method 500 is described in detail below using an integrated architecture as an example.
  • the method is also applicable to a separate architecture.
  • the active device in the following description is equivalent to an auxiliary device in a separate architecture.
  • the method includes the following steps.
  • At least two active devices send an excitation signal to a passive device in a first time period, where the excitation signal is used to charge the passive device.
  • step S501 may include the following steps S501a and S501b.
  • the first active device sends a first excitation signal to the passive device in a first time period, where the first excitation signal corresponds to a first frequency configuration.
  • S501b The second active device sends a second excitation signal to the passive device in the first time period, where the second excitation signal corresponds to a second frequency configuration.
  • the first frequency configuration is different from the second frequency configuration. Based on this approach, the first active device and the second active device send excitation signals corresponding to different frequency configurations to the passive device, which can reduce the possibility of power cancellation of different excitation signals, increase the signal power received by the passive device, and improve the charging efficiency.
  • the excitation signal is a constant envelope signal.
  • a constant envelope signal refers to a signal whose amplitude remains constant, such as a single tone signal or a frequency shift keying (FSK) signal.
  • a single tone signal refers to a sine or cosine signal with a single frequency, which may also be referred to as a single frequency signal.
  • An FSK signal is a signal determined according to a modulation order, a modulation symbol sequence, a modulation rate, and a frequency group including multiple frequency values, wherein the number of frequency values included in the frequency group is equal to the modulation order.
  • the ratio of the peak power to the average power of the constant envelope signal i.e., the peak-to-average power ratio (PAPR) is low, and the first active device and the second active device can send the excitation signal with a higher average power (such as peak power), thereby improving the efficiency of charging the passive device.
  • PAPR peak-to-average power ratio
  • the excitation signal is a non-constant envelope signal, such as a multi-tone signal.
  • a multi-tone signal is a signal formed by superimposing a plurality of sine or cosine signals of different frequencies. Under the condition of the same average power, the PAPR of the multi-tone signal is higher than the PAPR of the single-tone signal. The embodiments below will be described by taking the multi-tone signal as an example of a non-constant envelope signal.
  • the first frequency configuration is different from the second frequency configuration, which means that one or more parameters in the first frequency configuration are different from one or more parameters in the second frequency configuration, such as one of the following implementations 1.1-1.6.
  • Both the first excitation signal and the second excitation signal are constant envelope signals, such as the following methods 1.1-1.3.
  • Method 1.1 One or more parameters in the first frequency configuration include a first frequency value, and the first excitation signal is a single-tone signal with a frequency of the first frequency value; one or more parameters in the second frequency configuration include a second frequency value, and the second excitation signal is a single-tone signal with a frequency of the second frequency value; the first frequency value is different from the second frequency value.
  • the first active device includes a first frequency value according to a first frequency configuration, and it can be determined that the first excitation signal is a single-tone signal with a frequency of the first frequency value. For example, when the first frequency value is 1 Hz, the first active device can determine that the first excitation signal is a single-tone signal with a frequency of 1 Hz as shown in Figure 6.
  • the second active device includes a second frequency value according to a second frequency configuration, and determines that the second excitation signal is a single-tone signal with a frequency of the second frequency value.
  • the first frequency value is different from the second frequency value, that is, the first active device and the second active device simultaneously send single-tone signals of different frequencies to the passive device.
  • Figure 7 shows the single-tone signals sent by the first active device and the second active device to the passive device, respectively, and the signal received by the passive device, when the first frequency value is 1 Hz and the second frequency value is 2 Hz. It can be seen that the single-tone signals with different frequency values are superimposed when they arrive at the passive device, and the superimposed signal has a spindle-shaped envelope in the time domain, with a high PAPR, which improves the charging efficiency.
  • Method 1.2 One or more parameters in the first frequency configuration include a first frequency value, and the first excitation signal is a single-tone signal having a frequency of the first frequency value; one or more parameters in the second frequency configuration include a modulation order, a modulation symbol sequence, a modulation rate, and a frequency group including multiple frequency values, and the second excitation signal is an FSK signal corresponding to the modulation order, modulation symbol sequence, modulation rate, and frequency group in the second frequency configuration.
  • the first active device can determine that the first excitation signal is a single-tone signal with a frequency of the first frequency value according to the first frequency configuration including the first frequency value.
  • the second active device can determine that the second excitation signal is an FSK signal according to the second frequency configuration including the modulation order N, the modulation symbol sequence, the modulation rate and the frequency group including multiple frequency values, and the waveform of the FSK signal is determined by the parameters included in the second frequency configuration.
  • the modulation symbol sequence in the second frequency configuration can be a digital sequence of any base.
  • the second active device can convert it into a digital sequence of base N.
  • the following is an example of a modulation symbol sequence that is a digital sequence of base N.
  • the length of the modulation symbol sequence is unlimited, that is, the number of modulation symbols included in the modulation symbol sequence is unlimited.
  • the number of multiple frequency values included in the frequency group in the second frequency configuration is equal to N, and the N different frequency values correspond to modulation symbols 0, ..., N-1 respectively.
  • the modulation rate in the second frequency configuration is used to determine the duration of the sine or cosine signal of the frequency value corresponding to each modulation symbol in the modulation symbol sequence.
  • the duration of the FSK signal determined according to the second frequency configuration is determined by the length of the modulation symbol sequence and the modulation rate, and the duration of the FSK signal can be less than or equal to or greater than the length of the first time period. Wherein, when the duration of the FSK signal is less than the length of the first time period, the second active device can repeatedly send the FSK signal in the first time period.
  • the modulation symbol sequence is 0110011011
  • the frequency group includes 1Hz and 2Hz, corresponding to modulation symbols 0 and 1 respectively
  • the modulation rate is 1 symbol per second, that is, the single-tone signal of the frequency corresponding to each modulation symbol lasts for 1 second
  • the second active device can determine that the second excitation signal is the FSK signal shown in Figure 8.
  • the first active device sends a single tone signal to the passive device, and the second active device sends an FSK signal to the passive device at the same time.
  • FSK signals have strong anti-interference capabilities, which is beneficial to ensuring the signal power received by the passive device in the event of frequency selective fading, thereby improving the charging efficiency.
  • the frequency group in the second frequency configuration does not include the first frequency value, which can further reduce the possibility of power cancellation of different excitation signals, thereby improving the efficiency of charging the passive device to a greater extent.
  • One or more parameters in the first frequency configuration include a modulation order, a modulation symbol sequence, a modulation rate, and a frequency group including multiple frequency values, and the first excitation signal is an FSK signal corresponding to the modulation order, modulation symbol sequence, modulation rate, and frequency group in the first frequency configuration;
  • one or more parameters in the second frequency configuration include a modulation order, a modulation symbol sequence, a modulation rate, and a frequency group including multiple frequency values, and the second excitation signal is an FSK signal corresponding to the modulation order, modulation symbol sequence, modulation rate, and frequency group in the second frequency configuration;
  • the modulation order, modulation symbol sequence, modulation rate, or frequency group in the first frequency configuration is different from the modulation order, modulation symbol sequence, modulation rate, or frequency group in the second frequency configuration.
  • the first active device determines that the first excitation signal is an FSK signal according to the modulation order, modulation symbol sequence, modulation rate and frequency group in the first frequency configuration
  • the second active device determines that the second excitation signal is an FSK signal according to the modulation order, modulation symbol sequence, modulation rate and frequency group in the second frequency configuration.
  • the modulation order, modulation symbol sequence, modulation rate or frequency group in the first frequency configuration is different from the modulation order, modulation symbol sequence, modulation rate or frequency group in the second frequency configuration.
  • the modulation order, modulation symbol sequence, modulation rate or frequency group in the first frequency configuration may be different from the modulation order, modulation symbol sequence, modulation rate or frequency group in the second frequency configuration, which may be one of the following situations (1)-(5):
  • the modulation order in the first frequency configuration is different from the modulation order in the second frequency configuration.
  • the modulation symbol sequence in the first frequency configuration is different from the modulation symbol sequence in the second frequency configuration.
  • the frequency group in the first frequency configuration is different from the frequency group in the second frequency configuration, that is, among the multiple frequency values included in the frequency group in the first frequency configuration, at least one frequency value is different from the multiple frequency values included in the frequency group in the second frequency configuration.
  • the above situation (4) means that among the multiple frequency values included in the frequency group in the first frequency configuration, there may be a frequency value that is different from the multiple frequency values included in the frequency group in the second frequency configuration, or there may be multiple frequency values that are different from the multiple frequency values included in the frequency group in the second frequency configuration.
  • the frequency group in the first frequency configuration and the frequency group in the second frequency configuration include more different frequency values, the signal power received by the passive device from the multiple devices is higher, and the energy obtained is higher.
  • the modulation order in the first frequency configuration is 2, the modulation symbol sequence is 0110011011, the frequency group includes 1Hz and 2Hz, corresponding to modulation symbols 0 and 1 respectively, and the modulation rate is 1 symbol per second.
  • the modulation order in the second frequency configuration is 2, and the modulation symbol sequence is 0110011011, the frequency group includes 1Hz and 3Hz, corresponding to modulation symbols 0 and 1 respectively, and the modulation rate is 1 symbol per second.
  • the FSK signals sent by the first active device and the second active device respectively and the signal received by the passive device are shown in Figure 9.
  • the excitation signals sent by the two active devices are both FSK signals with strong anti-interference ability, which can further ensure the signal power received by the passive device, thereby improving the charging efficiency.
  • the first excitation signal is a constant envelope signal
  • the second excitation signal is a non-constant envelope signal, such as the following methods 1.4-1.5.
  • Method 1.4 One or more parameters in the first frequency configuration include a first frequency value, and the first excitation signal is a single-tone signal with a frequency of the first frequency value; one or more parameters in the second frequency configuration include multiple frequency values, and the second excitation signal is a multi-tone signal corresponding to the multiple frequency values in the second frequency configuration.
  • the first active device can determine that the first excitation signal is a single-tone signal having a frequency of the first frequency value according to the first frequency configuration including the first frequency value.
  • the second active device can determine that the second excitation signal is a polyphonic signal corresponding to the multiple frequency values in the second frequency configuration according to the multiple frequency values in the second frequency configuration, that is, the polyphonic signal is formed by superimposing sine or cosine signals corresponding to the respective frequency values in the second frequency configuration.
  • the first active device and the second active device send a single-tone signal and a multi-tone signal to the passive device respectively, which can increase the PAPR of the signal received by the passive device and improve the efficiency of charging the passive device.
  • the multiple frequency values in the second frequency configuration are different from the first frequency value, so that the multi-tone signal sent by the second active device does not include the sine or cosine signal of the first frequency value, which can further improve the energy obtained by the passive device from the multiple signals and achieve improved charging efficiency.
  • Method 1.5 One or more parameters in the first frequency configuration include a modulation order, a modulation symbol sequence, a modulation rate, and a frequency group including multiple frequency values, and the first excitation signal is an FSK signal corresponding to the modulation order, modulation symbol sequence, modulation rate, and frequency group in the first frequency configuration; one or more parameters in the second frequency configuration include multiple frequency values, and the second excitation signal is a multi-tone signal corresponding to the multiple frequency values in the second frequency configuration.
  • the first active device can determine that the first excitation signal is an FSK signal according to the modulation order, modulation symbol sequence, modulation rate and frequency group in the first frequency configuration, and the second active device can determine the corresponding second excitation signal according to the multiple frequency values in the second frequency configuration, that is, the second excitation signal is a multi-tone signal formed by superimposing the sine or cosine signals corresponding to the multiple frequency values.
  • the FSK signal and the multi-tone signal reach the passive device, the possibility of power cancellation is smaller, which can further ensure the signal power received by the passive device and improve the efficiency of charging the passive device.
  • At least one frequency value is different from the multiple frequency values in the second frequency configuration.
  • there is a frequency value that is different from the multiple frequency values in the second frequency configuration or there are multiple frequency values that are different from the multiple frequency values in the second frequency configuration.
  • Both the first excitation signal and the second excitation signal are non-constant envelope signals, such as the following method 1.6.
  • Method 1.6 One or more parameters in the first frequency configuration include multiple frequency values, and the first excitation signal is a polyphonic signal corresponding to the multiple frequency values in the first frequency configuration; one or more parameters in the second frequency configuration include multiple frequency values, and the second excitation signal is a polyphonic signal corresponding to the multiple frequency values in the second frequency configuration; among the multiple frequency values in the first frequency configuration, at least one frequency value is different from the multiple frequency values in the second frequency configuration.
  • the first active device can determine that the first excitation signal is a multi-tone signal formed by superimposing sine or cosine signals corresponding to multiple frequency values in the first frequency configuration
  • the second active device can determine that the second excitation signal is a multi-tone signal formed by superimposing sine or cosine signals corresponding to multiple frequency values in the second frequency configuration.
  • the excitation signals sent by the two active devices are both multi-tone signals with high PAPR, which can further improve the PAPR of the received signal on the passive device side, and help improve the charging efficiency.
  • the multiple frequency values in the first frequency configuration there may be a frequency value different from the multiple frequency values in the second frequency configuration, or there may be multiple frequency values different from the multiple frequency values in the second frequency configuration.
  • the method 500 further includes the following step S502.
  • At least two active devices receive a first instruction message from a centralized control device, where the first instruction message is used to instruct the at least two active devices to send an excitation signal to a passive device in a first time period.
  • step S502 includes the following steps S502a and S502b .
  • the first active device receives a first instruction message from the centralized control device, where the first instruction message is used to instruct the first active device to send an excitation signal to the passive device in a first time period.
  • the second active device receives a first instruction message from the centralized control device, where the first instruction message is used to instruct the second active device to send an excitation signal to the passive device in a first time period.
  • the first indication message includes information indicating the first time period.
  • Specific implementation methods include the following methods 2.1 and 2.2.
  • the information indicating the first time period includes a first time and a second time, and the first time period starts from the first time after the at least two active devices receive the first indication message and lasts for the second time.
  • the at least two active devices start sending an excitation signal to the passive device at the first time after receiving the first indication message according to the first time and the second time in the first indication message, and the excitation signal lasts until the second time ends.
  • the units of the first time and the second time can be microseconds, milliseconds, seconds, or the number of symbols, time slots, subframes, and frames.
  • the units of the first time and the second time can be the same or different, and the embodiments of the present application do not limit this.
  • the centralized control device may send the first indication message to at least two active devices at the same time, or may send the first indication message to at least two active devices at different times.
  • the first time and the second time in the first indication message received by each of the at least two active devices may be the same or different.
  • There are multiple ways for the centralized control device to send the first indication message and there are also multiple ways to take the values of the first time and the second time. As long as at least two active devices can determine the same first time period based on the time when the first indication message is received and the first time and the second time included in the first indication message, they all fall within the scope of protection of the embodiments of the present application.
  • the distances between the first active device 101-1 and the second active device 101-2 and the centralized control device 103 are different.
  • the centralized control device sends the first indication message to the first active device and the second active device at the same time
  • the first active device and the second active device receive the first indication message at different times.
  • the centralized control device can configure different first times and/or second times for the first active device and the second active device, so that the first time period determined by the first active device and the second active device is the same, thereby enabling the first active device and the second active device to send an excitation signal to the passive device at the same time.
  • the centralized control device can also send the first indication message to the first active device and the second active device at different times, respectively, so that the first active device and the second active device receive the first indication message at the same time, and then determine the same first time period according to the same first time and second time.
  • the information indicating the first time period includes the time domain resource position where the first time period is located, for example, the number of the time domain resource, where the time domain resource can be a symbol, a time slot, a subframe, a frame, etc.
  • the first time period is time slots #0 to #4, then at least two active devices determine that the first time slots #0 to #4 after receiving the first indication message are the first time period.
  • the method 500 further includes the following step S503.
  • At least two active devices receive a second indication message from the centralized control device, where the second indication message includes one or more parameters in a frequency configuration corresponding to the excitation signal.
  • step S503 includes the following steps S503 a and S503 b .
  • the first active device receives a second indication message from the centralized control device, where the second indication message includes one or more parameters in a first frequency configuration corresponding to the first excitation signal.
  • the second active device receives a second indication message from the centralized control device, where the second indication message includes one or more parameters in a second frequency configuration corresponding to the second excitation signal.
  • the second indication message includes one or more parameters in the frequency configuration corresponding to the excitation signal.
  • the second indication message includes an index value corresponding to one or more parameters in the frequency configuration.
  • the active device and the centralized control device store a frequency configuration table, which includes all possible values of one or more parameters in the frequency configuration and the corresponding index values.
  • Table 1 gives an example of a frequency configuration table.
  • the frequency configuration table may be sent by the centralized control device to the active device, or may be configured by other network devices for the centralized control device and the active device, or may be information stored by the active device before executing step S503. The embodiment of the present application does not limit this.
  • At least two active devices obtain the index value from the second indication message, search the frequency configuration table according to the index value, and determine one or more parameters in the frequency configuration corresponding to the excitation signal. Based on this method, the active device can determine the parameters in the frequency configuration according to the index value in the second indication message, so that the signaling overhead is reduced.
  • step S503 and step S502 are different steps, and the second indication message and the first indication message in step S502 are different messages, that is, the centralized control device indicates the time when at least two active devices send the excitation signal and the frequency configuration corresponding to the excitation signal through different indication messages.
  • the centralized control device can send one or more of the first indication message and the second indication message as needed. For example, when the frequency configuration is relatively fixed, the centralized control device can reduce the number of times the second indication message is sent, thereby reducing signaling overhead.
  • step S503 and step S502 are the same step, and the second indication message and the first indication message in step S502 are the same message, that is, the centralized control device indicates the time for sending the excitation signal and the frequency configuration corresponding to the excitation signal in the same indication message, which can improve the information transmission efficiency of the centralized control device.
  • one or more parameters in the frequency configuration corresponding to the excitation signal may be included in the second indication message, and other parameters may be included in the first indication message.
  • the frequency configuration includes a modulation order, a modulation symbol sequence, a modulation rate, and a frequency group
  • the second indication message includes the modulation order and the modulation rate in the frequency configuration
  • the first indication message includes the modulation symbol sequence and the frequency group.
  • the centralized control device may send the second indication message to at least two active devices in the following manners 3.1-3.3 but not limited thereto.
  • the centralized control device sends a second indication message to at least two active devices at the same time.
  • the centralized control device may broadcast a second indication message to at least two active devices, and the second indication message includes a frequency configuration corresponding to the excitation signal sent by the at least two active devices.
  • the second indication message also includes identification information of the at least two active devices, each identification information corresponds to a frequency configuration, that is, the identification information is used to indicate which active device is available for the corresponding frequency configuration.
  • the identification information may be the identity information of the active device.
  • the active device searches whether its identification information exists in the second indication message. If so, it determines the excitation signal to be sent to the passive device according to the frequency configuration corresponding to the identification information. If not, it ignores the second indication message.
  • the centralized control device can send the frequency configurations of different active devices to multiple active devices through an indication message.
  • Each active device can determine its own available frequency configuration based on the correspondence between the identification information in the indication message and the frequency configuration, thereby improving the information transmission efficiency of the centralized control device.
  • Mode 3.2 The centralized control device sends a second indication message to each active device through a dedicated channel between the centralized control device and each active device of at least two active devices.
  • the active device receives the second indication message from the dedicated channel, it determines the excitation signal to be sent to the passive device according to the frequency configuration included in the second indication message. This can improve the transmission reliability of the second indication message, reduce the complexity of the active device in processing the second indication message, and reduce the processing delay.
  • Method 3.3 The centralized control device sends a second indication message to each of the at least two active devices through a common channel, wherein the second indication message includes identification information for indicating to which active device the second indication message is sent, that is, to which active device the frequency configuration in the second indication message is available.
  • the identification information may be the identity information of the active device.
  • the centralized control device may add the identification information to a certain information element (IE) of the second indication message, or may use the identification information to scramble the second indication message to improve the security of message transmission.
  • the identification information is the radio network temporary identifier (RNTI) of the active device, and the centralized control device uses the RNTI to scramble the second indication message.
  • RNTI radio network temporary identifier
  • the active device receives the second indication message. If the second indication message includes the identification information of the active device, for example, the IE of the second indication message includes the identification information of the active device, or the active device can use its own identification information to correctly de-scramble the second indication message, then the active device can determine that the frequency configuration in the second indication message is available to itself, and then determine the excitation signal to be sent to the passive device based on the frequency configuration.
  • the second indication message includes the identification information of the active device, for example, the IE of the second indication message includes the identification information of the active device, or the active device can use its own identification information to correctly de-scramble the second indication message.
  • the communication system 100 may also include more than two active devices, that is, in addition to the first active device 101-1 and the second active device 101-2, there is at least one active device that sends an excitation signal to the passive device 102 in the first time period.
  • the frequency configuration corresponding to the excitation signal sent by at least one active device may be the same as the first frequency configuration or the second frequency configuration, or may be different from both the first frequency configuration and the second frequency configuration, and the embodiment of the present application does not limit this. Based on this method, more active devices send excitation signals to passive devices at the same time, which can provide more energy for passive devices and further improve the efficiency of charging passive devices.
  • the passive device can also exchange data with the first active device, the second active device or other active devices in the system.
  • the following takes the data interaction between the passive device and the first active device under the integrated architecture as an example for description.
  • method 500 further includes the following step S504.
  • the first active device sends a downlink signal modulated with data to the passive device.
  • the passive device receives the downlink signal from the first active device, demodulates the downlink signal, and obtains the data transmitted by the first active device.
  • the data transmitted by the first active device may be generated by the first active device, or may be forwarded by the centralized control device to the passive device through the first active device.
  • method 500 further includes the following steps S505-S507 (not shown in the figure).
  • the first active device sends a carrier signal to the passive device, which is used to carry data sent by the passive device.
  • S506 The passive device backscatters the carrier signal modulated with data to the first active device.
  • the first active device receives the backscattered signal from the passive device, and obtains data transmitted by the passive device.
  • the data transmitted by the passive device may be sent to the centralized control device.
  • the first active device obtains the data transmitted by the passive device, it also forwards the data to the centralized control device.
  • the first active device acts as an assistant to send a carrier signal to the passive device, and the passive device backscatters the carrier signal modulated with data to another active device acting as a receiver, thereby achieving uplink data transmission.
  • the passive device can exchange data with the active device and/or the centralized control device.
  • FIG10 is a schematic flow chart of another communication method 1000 provided in an embodiment of the present application, which can be applied to the above-mentioned communication system 100.
  • the method 1000 is described in detail below using an integrated architecture as an example. Similarly, the method is also applicable to a separate architecture. For example, the active device in the following description is equivalent to an auxiliary device under the separate architecture. As shown in FIG10, the method includes the following steps.
  • a centralized control device groups at least two active devices, and determines a time for each active device group to send an excitation signal and a frequency configuration corresponding to the excitation signal.
  • the number of active devices in different active device groups may be the same or different.
  • the centralized control device determines the time for each active device group to send an excitation signal and the frequency configuration corresponding to the excitation signal according to the following conditions 1.1-1.3.
  • Condition 1.1 The active devices in the same active device group send excitation signals to the passive devices in the same time period and according to the same frequency configuration.
  • Condition 1.2 Different active device groups send excitation signals in different time periods, or have different frequency configurations, or send excitation signals in different time periods and with different frequency configurations. Wherein, different active device groups send excitation signals in different time periods include: different active device groups send excitation signals in different time periods that do not completely overlap.
  • the specific implementation methods of different frequency configurations can refer to the above methods 1.1-1.6.
  • Condition 1.3 The time periods during which at least two active device groups send excitation signals are the same.
  • FIG11 is a schematic diagram showing a centralized control device grouping at least two active devices, wherein the centralized control device groups 18 active devices into 5 groups.
  • the first group and the second group each include 4 active devices, and the third, fourth, and fifth groups each include 2 active devices.
  • the first, third, and fourth groups send excitation signals in the first time period, and the frequency configurations are the first frequency configuration, the second frequency configuration, and the third frequency configuration, respectively.
  • the second and fifth groups send excitation signals in the second time period, and the frequency configurations are the first frequency configuration and the third frequency configuration, respectively.
  • the centralized control device sends one or more indication messages to one or more active devices in each active device group, to indicate a time period and frequency configuration for the group of active devices to send excitation signals.
  • S1003 The active device sends an excitation signal to the passive device according to the learned time period and frequency configuration, so as to charge the passive device.
  • the one or more indication messages for indicating the time period and frequency configuration of the group of active devices to send the excitation signal can refer to the first indication message and the second indication message in the method 500, which will not be repeated here.
  • steps S1002 and S1003 are described in detail by taking the centralized control device sending an indication message to the first active device group and the first active device group sending an excitation signal to the passive device as an example.
  • the above steps S1002 and S1003 can adopt but are not limited to one of the following methods 4.1-4.3.
  • Mode 4.1 In the above step S1002, the centralized control device broadcasts an indication message to all active devices in the first active device group.
  • the indication message includes the identification information of the first active device group, the time period and frequency configuration for the first active device group to send the excitation signal.
  • the centralized control device before sending the indication message, the centralized control device also sends the identification information of the first active device group to the active devices in the first active device group.
  • the active device in the first active device group receives the indication message.
  • the active device sends an excitation signal to the passive device according to the time period and frequency configuration in the indication message.
  • the active device ignores the indication message.
  • the centralized control device informs all active devices in a group of the time period and frequency configuration for sending the excitation signal by broadcasting an indication message, which can reduce signaling overhead.
  • Mode 4.2 In the above step S1002, the centralized control device sends an indication message to each active device in the first active device group.
  • the centralized control device sends an indication message to each active device in the first active device group.
  • the above modes 3.2 and 3.3 please refer to the above modes 3.2 and 3.3.
  • the active device receives the indication message.
  • the active device confirms that the time period and frequency configuration in the indication message are available to itself, the active device sends an excitation signal to the passive device according to the time period and frequency configuration. Otherwise, the active device ignores the indication message.
  • the centralized control device may select at least one active device from the first active device group as the main active device, and the centralized control device sends an indication message to the main active device, wherein the indication message includes the time period and frequency configuration for the first active device group to send the excitation signal.
  • the indication message also includes an identification signal of the first active device group, or the indication message includes identification information of the main active device.
  • the indication message may further include second information, and the second information is used to inform the master active device to notify the other active devices in the first active device group of the time period and frequency configuration included in the indication message.
  • the centralized control device may include the identity information of the other active devices in the first active device group in the indication message.
  • the centralized control device may send the identity information of the other active devices in the first active device group to the master active device.
  • the master active device receives the indication message from the centralized control device, and determines that the time period and frequency configuration in the indication message are available to the active device group to which it belongs according to the identification signal of the first active device group or the identification information of the master active device in the indication message, and notifies the other active devices in the first active device group of the time period and frequency configuration. If the indication message does not include the identification signal of the first active device group and the identification information of the master active device, the master active device ignores the indication message. Then, the active device sends an excitation signal according to the time period and frequency configuration learned from the indication message or learned from the master active device.
  • the main active device can send time periods and frequency configurations to other active devices in the first active device group through 5G SL technology.
  • FIG12 is a schematic diagram of implementing steps S1002 and S1003 by way 4.3.
  • the first active device group 1201 includes active devices, namely, the first active device 101-1, the second active device 101-2, the active device 101-3, and the active device 101-4.
  • the centralized control device uses the first active device 101-1 as the master active device of the first active device group and sends an indication message to the first active device 101-1.
  • the indication message includes the identity information of the second active device 101-2, the active device 101-3, and the active device 101-4, as well as the identification information of the first active device group 1201, the second information, the time period for sending the excitation signal, and the corresponding frequency configuration.
  • the first active device 101-1 confirms that the time period and frequency configuration in the indication message are available for the first active device group based on the identification information of the first active device group in the indication message, and then sends the time period and frequency configuration for sending the excitation signal to the second active device 101-2, active device 101-3 and active device 101-4 based on the second information.
  • the centralized control device can uniformly plan the grouping of multiple active devices, control the time period and frequency configuration of different active device groups sending excitation signals, and provide more efficient charging for passive devices.
  • each device needs to include a hardware structure and/or software module corresponding to each function.
  • the embodiment of the present application can divide the functional modules of the device according to the above method example.
  • each functional module can be divided according to each function, or two or more functions can be integrated into one processing module.
  • the above integrated modules can be implemented in the form of hardware or software functional modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. The following is an example of using the corresponding functional division method.
  • Each functional module is used as an example for explanation.
  • FIG13 is a schematic block diagram of a communication device 1300 provided in an embodiment of the present application.
  • the device 1300 includes a transceiver module 1301 and a processing module 1302.
  • the transceiver module 1301 can implement corresponding communication functions, and the processing module 1302 is used to perform data processing, or in other words, the transceiver module 1301 is used to perform operations related to receiving and sending, and the processing module 1302 is used to perform other operations besides receiving and sending.
  • the transceiver module 1301 can also be called a communication interface or a communication unit.
  • the apparatus 1300 may correspond to the active device in the above method embodiment, or a component (such as a chip) of the active device.
  • the device 1300 can implement the steps or processes executed by the active device in the above method embodiment, wherein the transceiver module 1301 can be used to execute the operations related to the transceiver of the active device in the above method embodiment, and the processing module 1302 can be used to execute the operations related to the internal processing of the active device in the above method embodiment.
  • the transceiver module 1301 is used to send an excitation signal to a passive device in a first time period, and the excitation signal is used to charge the passive device.
  • the processing module 1302 is used to determine that the excitation signal is a single-tone signal of the frequency value according to the frequency value in the frequency configuration; the processing module 1302 is also used to determine that the excitation signal is an FSK signal corresponding to the modulation order, modulation symbol sequence, modulation rate and frequency group in the frequency configuration according to the modulation order, modulation symbol sequence, modulation rate and frequency group in the frequency configuration; the processing module 1302 is also used to determine that the excitation signal is a multi-tone signal according to the multiple frequency values included in the frequency configuration, and the multi-tone signal is formed by superimposing sine or cosine signals corresponding to each frequency value in the frequency configuration.
  • the transceiver module 1301 is further configured to receive a first indication message from a centralized control device, wherein the first indication message is used to instruct the active device to send the excitation signal to the passive device in the first time period.
  • the processing module 1302 is further configured to determine the first time period according to the first indication message.
  • the transceiver module 1301 is also used to receive a second indication message from the centralized control device, wherein the second indication message includes a frequency configuration corresponding to the excitation signal; the processing module 1302 is also used to determine whether the frequency configuration in the second indication message is a frequency configuration available to itself based on the identification information included in the second indication message.
  • the transceiver module 1301 may be used to execute the steps of sending and receiving information in the method, such as steps S501 , S502 , S503 and S504 ; the processing module 1302 may be used to execute the internal processing steps in the method.
  • the transceiver module 1301 may be used to execute the steps of sending and receiving information in the method, such as steps S1002 and S1003 ; the processing module 1302 may be used to execute the internal processing steps in the method.
  • the apparatus 1300 may correspond to the passive device in the above method embodiment, or be a component (such as a chip) of the passive device.
  • the device 1300 can implement the steps or processes executed by the passive device in the above method embodiment, wherein the transceiver module 1301 can be used to perform the transceiver-related operations of the passive device in the above method embodiment, for example, for receiving the excitation signal from the active device; the processing module 1302 can be used to perform the internal processing-related operations of the passive device in the above method embodiment.
  • the transceiver module 1301 may be used to execute the steps of sending and receiving information in the method, such as step S501 ; and the processing module 1302 may be used to execute the internal processing steps in the method.
  • the transceiver module 1301 may be used to execute the steps of sending and receiving information in the method, such as step S1003 ; and the processing module 1302 may be used to execute the internal processing steps in the method.
  • the apparatus 1300 may correspond to the centralized control device in the above method embodiment, or a component (such as a chip) of the centralized control device.
  • the device 1300 can implement the steps or processes executed by the centralized control device in the above method embodiment, wherein the transceiver module 1301 can be used to execute the transceiver related operations of the centralized control device in the above method embodiment, and the processing module 1302 can be used to execute the internal processing related operations of the centralized control device in the above method embodiment.
  • the transceiver module 1301 is used to send a first indication message to at least two active devices, wherein the first indication message is used to instruct the at least two active devices to send the excitation signal to the passive device during the first time period; the transceiver module 1301 is also used to send a second indication message to at least two active devices, wherein the second indication message includes a frequency configuration corresponding to the excitation signal; the processing module 1302 is used to include identification information in the second indication message, wherein the identification information is used to indicate which active device the frequency configuration is used for.
  • the processing module 1302 is used to group at least two active devices, determine the time for each active device group to send an excitation signal and the frequency configuration corresponding to the excitation signal; the transceiver module 1301 is used to send one or more indication messages to one or more active devices in each group of active devices, indicating the time period and frequency configuration for the group of active devices to send the excitation signal.
  • the transceiver module 1301 may be used to execute the steps of sending and receiving information in the method, such as steps S502 and S503 ; and the processing module 1302 may be used to execute the internal processing steps in the method.
  • the transceiver module 1301 may be used to execute the steps of sending and receiving information in the method, such as step S1002 ;
  • the processing module 1302 may be used to execute the internal processing steps in the method, such as step S1001 ;
  • the device 1300 here is embodied in the form of a functional module.
  • the term "module” here may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (such as a shared processor, a dedicated processor or a group processor, etc.) and a memory for executing one or more software or firmware programs, a combined logic circuit and/or other suitable components that support the described functions.
  • ASIC application specific integrated circuit
  • the above-mentioned transceiver module 1301 can also be a transceiver circuit (for example, it can include a receiving circuit and a transmitting circuit), and the processing module 1302 can be a processing circuit.
  • the apparatus 1300 of each of the above-mentioned schemes has the function of implementing the corresponding steps performed by the devices (such as active devices, passive devices and centralized control devices) in the above-mentioned methods.
  • This function can be implemented by hardware, or by hardware executing corresponding software implementations.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions; for example, the transceiver module can be replaced by a transceiver (for example, the sending unit in the transceiver module can be replaced by a transmitter, and the receiving unit in the transceiver module can be replaced by a receiver), and other units, such as processing modules, etc. can be replaced by processors to respectively perform the transceiver operations and related processing operations in each method embodiment.
  • Fig. 14 is a schematic diagram of another communication device 1400 provided in an embodiment of the present application.
  • the device 1400 includes one or more processors 1401, and the processor 1401 is used to execute computer programs or instructions stored in a memory 1402, or read data/signaling stored in the memory 1402 to execute the methods in the above method embodiments.
  • the device 1400 further includes one or more memories 1402, and the memories 1402 are used to store computer programs or instructions and/or data.
  • the memories 1402 may be integrated with the processor 1401, or may be separately arranged.
  • the device 1400 further includes a transceiver 1403, and the transceiver 1403 is used for receiving and/or sending signals.
  • the processor 1401 is used to control the transceiver 1403 to receive and/or send signals.
  • the apparatus 1400 is used to implement the operations performed by the active device in each of the above method embodiments.
  • the apparatus 1400 is used to implement the operations performed by the passive device in the above method embodiments.
  • the apparatus 1400 is used to implement the operations performed by the centralized control device in the above method embodiments.
  • processors mentioned in the embodiments of the present application may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.
  • the memory mentioned in the embodiments of the present application may be a volatile memory and/or a non-volatile memory.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory.
  • the volatile memory may be a random access memory (RAM).
  • a RAM may be used as an external cache.
  • RAM includes the following forms: static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), and direct rambus RAM (DR RAM).
  • SRAM static RAM
  • DRAM dynamic RAM
  • SDRAM synchronous DRAM
  • DDR SDRAM double data rate SDRAM
  • ESDRAM enhanced SDRAM
  • SLDRAM synchronous link DRAM
  • DR RAM direct rambus RAM
  • the processor when the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, the memory (storage module) can be integrated into the processor. It should also be noted that the memory described herein is intended to include but is not limited to these and any other suitable types of memory.
  • FIG. 15 is a schematic diagram of a chip system 1500 provided in an embodiment of the present application.
  • the chip system 1500 (or also referred to as a processing system
  • the system includes a logic circuit 1501 and an input/output interface 1502.
  • the logic circuit 1501 can be a processing circuit in the chip system 1500.
  • the logic circuit 1501 can be coupled to the storage unit and call the instructions in the storage unit so that the chip system 1500 can implement the methods and functions of each embodiment of the present application.
  • the input/output interface 1502 can be an input/output circuit in the chip system 1500, outputting information processed by the chip system 1500, or inputting data or signaling information to be processed into the chip system 1500 for processing.
  • the chip system 1500 is used to implement the operations performed by the active device, the passive device, and the centralized control device in the above method embodiments.
  • the logic circuit 1501 is used to implement the internal processing related operations performed by the active device, the passive device, or the centralized control device in the above method embodiments;
  • the input/output interface 1502 is used to implement the sending and/or receiving related operations performed by the active device, the passive device, or the centralized control device in the above method embodiments.
  • the disclosed devices and methods can be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.
  • the present application also provides a computer-readable storage medium on which are stored computer instructions for implementing the methods performed by the active device, the passive device, or the centralized control device in the above-mentioned method embodiments.
  • the computer program when executed by a computer, the computer can implement the methods performed by the active device, the passive device, or the centralized control device in the above-mentioned method embodiments.
  • the computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer can be a personal computer, a server, or a network device, etc.
  • the computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center.
  • the computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that contains one or more available media integrations.
  • the available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid state disk (SSD)).
  • a magnetic medium e.g., a floppy disk, a hard disk, a magnetic tape
  • an optical medium e.g., a DVD
  • a semiconductor medium e.g., a solid state disk (SSD)
  • SSD solid state disk
  • the aforementioned available medium includes, but is not limited to, various media that can store program codes, such as a USB flash drive, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
  • "at least one” means one or more, and “more” means two or more.
  • “And/or” describes the association relationship of the associated objects, indicating that three relationships may exist.
  • a and/or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural.
  • the character "/" generally indicates that the associated objects before and after are in an "or" relationship.
  • first”, “second” and various digital numbers indicate distinctions made for ease of description and are not used to limit the scope of the embodiments of the present application. For example, to distinguish between different messages, etc., rather than to describe a specific order or sequence. It should be understood that the objects described in this way can be interchanged where appropriate so as to be able to describe solutions other than the embodiments of the present application.
  • used for indication may include being used for direct indication and being used for indirect indication.
  • the indication information directly indicates A or indirectly indicates A, but it does not mean that the indication information must carry A.
  • the indication method involved in the embodiments of the present application should be understood to include various methods that can enable the party to be indicated to know the information to be indicated.
  • the information to be indicated can be sent as a whole or divided into multiple sub-information and sent separately, and the sending period and/or sending time of these sub-information can be the same or different.
  • the present application does not limit the specific sending method.
  • the "indication information" in the embodiments of the present application may be an explicit indication, i.e., directly indicated by signaling, or obtained by combining other rules or other parameters or by deduction according to the parameters indicated by the signaling. It may also be an implicit indication, i.e., obtained according to a rule or relationship, or according to other parameters, or by deduction. The present application does not make specific restrictions on this.
  • storage may refer to storage in one or more memories.
  • the one or more memories may be separately set or integrated in an encoder or decoder, a processor, or a communication device.
  • the one or more memories may also be partially separately set and partially integrated in a decoder, a processor, or a communication device.
  • the type of memory may be any form of storage medium, which is not limited by the present application.
  • “communication” can also be described as “data transmission”, “information transmission”, “data processing”, etc.
  • “Transmission” includes “sending” and/or “receiving”
  • “data” can include user data and/or control signaling, which is not limited in the present application.

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Abstract

本申请实施例提供了一种通信方法、系统和装置，可以提高充能效率。该方法包括：至少两个有源设备在第一时间段向无源设备发送激励信号，所述至少两个有源设备包括第一有源设备和第二有源设备，所述激励信号用于为所述无源设备充能；所述至少两个有源设备在第一时间段向无源设备发送激励信号包括：所述第一有源设备在所述第一时间段向所述无源设备发送第一激励信号；所述第二有源设备在所述第一时间段向所述无源设备发送第二激励信号；其中，所述第一激励信号对应的第一频率配置不同于所述第二激励信号对应的第二频率配置。

Description

通信方法、系统和装置 技术领域
本申请涉及通信技术领域，并且更具体地，涉及一种与设备充能相关的通信方法、系统和装置。
背景技术
物联网(internet of things，IoT)设备包括有源设备和无源设备，其中，无源设备通常利用来自有源设备的电磁波信号进行充能。目前，无源设备的充能效率低下，如何提高为无源设备充能的效率是需要进一步研究的重要问题。
发明内容
本申请提供一种通信方法、系统和装置等，用于为无源设备充能，可以提高为无源设备充能的效率。
第一方面，提供了一种通信方法，包括：至少两个有源设备在第一时间段向无源设备发送激励信号，其中，至少两个有源设备包括第一有源设备和第二有源设备，激励信号用于为所述无源设备充能；至少两个有源设备在第一时间段向无源设备发送激励信号包括：第一有源设备在第一时间段向无源设备发送第一激励信号；第二有源设备在第一时间段向无源设备发送第二激励信号；其中，第一激励信号对应的第一频率配置不同于第二激励信号对应的第二频率配置。
基于上述方案，至少两个有源设备可以同时向无源设备发送不同频率配置对应的激励信号，可以降低不同激励信号到达无源设备时功率相消的可能性，使得充能效率提高。
结合第一方面，在第一方面的某些实现方式中，所述至少两个有源设备在第一时间段向无源设备发送激励信号之前，还包括：所述至少两个有源设备接收来自集中控制设备的第一指示消息，所述第一指示消息用于指示所述至少两个有源设备在所述第一时间段向所述无源设备发送所述激励信号。在另一些实现方式中，所述至少两个有源设备在第一时间段向无源设备发送激励信号之前，还包括：所述至少两个有源设备接收来自所述集中控制设备的第二指示消息，所述第二指示消息包括与所述激励信号对应的频率配置。集中控制设备可以通过指示消息实现对多个有源设备的统一调度，接受集中控制设备统一调度的有源设备不需要预先配置时间或频率的相关信息。
结合第一方面，在第一方面的某些实现方式中，所述第二指示消息还包括标识信息，所述标识信息用于指示所述频率配置是哪个有源设备可用的。在包括多个有源设备的场景中，集中控制设备可以通过一条指示消息向多个有源设备发送不同有源设备的频率配置，各有源设备可以根据指示消息中标识信息和频率配置的对应关系确定自身可用的频率配置，提高集中控制设备的信息传递效率。
第二方面，提供了一种通信系统，包括：第一有源设备和第二有源设备，其中：所述第一有源设备用于：在第一时间段向无源设备发送用于为无源设备充能的第一激励信号；所述第二有源设备用于：在所述第一时间段向所述无源设备发送用于为所述无源设备充能的第二激励信号；其中，所述第一激励信号对应的第一频率配置不同于所述第二激励信号对应的第二频率配置。
基于上述方案，至少两个有源设备可以同时向无源设备发送不同频率配置对应的激励信号，可以降低不同激励信号功率相消的可能性，提高无源设备接收的信号功率，使得充能效率提高。
结合第二方面，在第二方面的某些实现方式中，所述系统还包括所述无源设备，用于接收所述第一激励信号和所述第二激励信号，从而无源设备可以从激励信号中获取能量，实现充能。
结合第二方面，在第二方面的某些实现方式中，所述第一有源设备和所述第二有源设备还用于：接收以下一项或多项：第一指示消息，所述第一指示消息用于指示所述第一有源设备和所述第二有源设备在所述第一时间段向所述无源设备发送所述激励信号；第二指示消息，所述第二指示消息包括与所述激励信号对应的频率配置。
结合第二方面，在第二方面的某些实现方式中，所述系统还包括集中控制设备；所述集中控制设备用于：向所述第一有源设备和所述第二有源设备发送所述第一指示消息或所述第二指示消息。集中控制设备可以通过指示消息实现对多个有源设备的统一调度，接受集中控制设备统一调度的有源设备不需要预先配置时间或频率的相关信息。
第三方面，提供了一种通信方法，包括：有源设备在第一时间段向无源设备发送激励信号，所述激励信号用于为所述无源设备充能。可选的，所述有源设备接收来自集中控制设备的第一指示消息，所述第一指示消息用于指示所述有源设备在所述第一时间段向所述无源设备发送所述激励信号。可选的，所述有源设备接收来自所述集中控制设备的第二指示消息，所述第二指示消息包括与所述激励信号对应的频率配置中的一个或多个参数。
第四方面，提供了一种通信方法，包括：集中控制设备向一个或多个有源设备发送第一指示消息和/或第二指示消息，所述第一指示消息用于指示所述一个或多个有源设备在第一时间段向无源设备发送激励信号，所述第二指示消息包括与所述激励信号对应的频率配置中的一个或多个参数。
第五方面，还提供了一种装置，包括的模块用于实现第三方面或第四方面提供的方法。
第六方面，还提供了一种装置，包括处理器和存储器，所述存储器用于存储指令，所述处理器用于执行所述指令以执行第三方面或第四方面提供的方法。
第七方面，还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，当所述指令在计算机上运行时，使得计算机执行第三方面或第四方面提供的方法。
第八方面，还提供了一种包含指令的计算机程序产品，当所述指令在计算机上运行时，使得所述计算机执行第三方面或第四方面提供的方法。
结合上述各个方面和各实现方式，在某些实现方式中，所述第一激励信号对应的第一频率配置不同于所述第二激励信号对应的第二频率配置包括：所述第一频率配置中的一个或多个参数不同于所述第二频率配置中的一个或多个参数。
结合上述各个方面和实现方式，在某些实现方式中，所述第一频率配置中的一个或多个参数包括第一频率值，所述第一激励信号是频率为所述第一频率值的单音信号；所述第二频率配置中的一个或多个参数包括第二频率值，所述第二激励信号是频率为所述第二频率值的单音信号；所述第一频率值不同于所述第二频率值。不同的激励信号到达无源设备时相叠加，叠加后的信号具有时域纺锤形包络，PAPR较高，使得充能效率提高。
结合上述各个方面和实现方式，在某些实现方式中，所述第一频率配置中的一个或多个参数包括第一频率值，所述第一激励信号是频率为所述第一频率值的单音信号；所述第二频率配置中的一个或多个参数包括调制阶数、调制符号序列、调制速率和包括多个频率值的频率组，所述第二激励信号是与所述第二频率配置中的调制阶数、调制符号序列、调制速率和频率组对应的频移键控FSK信号。FSK信号的抗干扰能力强，有利于保障无源设备接收到的信号功率，从而实现充能效率的提高。
结合上述各个方面和实现方式，在某些实现方式中，所述第一频率配置中的一个或多个参数包括调制阶数、调制符号序列、调制速率和包括多个频率值的频率组，所述第一激励信号是与所述第一频率配置中的调制阶数、调制符号序列、调制速率和频率组对应的频移键控FSK信号；所述第二频率配置中的一个或多个参数包括调制阶数、调制符号序列、调制速率和包括多个频率值的频率组，所述第二激励信号是与所述第二频率配置中的调制阶数、调制符号序列、调制速率和频率组对应的FSK信号；所述第一频率配置中的调制阶数、调制符号序列、调制速率或频率组不同于所述第二频率配置中的调制阶数、调制符号序列、调制速率或频率组。其中，所述第一频率配置中的频率组不同于所述第二频率配置中的频率组，包括：在所述第一频率配置中的频率组所包括的多个频率值中，至少一个频率值不同于所述第二频率配置中的频率组所包括的多个频率值。两个激励信号都为抗干扰能力强的FSK信号，可以进一步保障无源设备接收到的信号功率，从而实现充能效率的提高。
结合上述各个方面和实现方式，在某些实现方式中，所述第一频率配置中的一个或多个参数包括第一频率值，所述第一激励信号是频率为所述第一频率值的单音信号；所述第二频率配置中的一个或多个参数包括多个频率值，所述第二激励信号是与所述第二频率配置中的多个频率值对应的多音信号。可选的，所述第二频率配置中的多个频率值不同于所述第一频率值。两个有源设备分别发送单音信号和多音信号时，无源设备接收到的信号的PAPR高，无源设备获取的能量更多。
结合上述各个方面和实现方式，在某些实现方式中，所述第一频率配置中的一个或多个参数包括调制阶数、调制符号序列、调制速率和包括多个频率值的频率组，所述第一激励信号是与所述第一频率配置中的调制阶数、调制符号序列、调制速率和频率组对应的频移键控FSK信号；所述第二频率配置中的一个或多个参数包括多个频率值，所述第二激励信号是与所述第二频率配置中的多个频率值对应的多音信号。可选的，在所述第一频率配置中的频率组所包括的多个频率值中，至少一个频率值不同于所述第 二频率配置中的多个频率值。FSK信号和多音信号功率相消的可能性更小，能够进一步保障无源设备接收的信号功率，提高为无源设备充能的效率。
结合上述各个方面和实现方式，在某些实现方式中，所述第一频率配置中的一个或多个参数包括多个频率值，所述第一激励信号是与所述第一频率配置中的多个频率值对应的多音信号；所述第二频率配置中的一个或多个参数包括多个频率值，所述第二激励信号是与所述第二频率配置中的多个频率值对应的多音信号；在所述第一频率配置中的多个频率值中，至少一个频率值不同于所述第二频率配置中的多个频率值。两个有源设备发送的激励信号都是多音信号，可以进一步提高无源设备接收的信号的PAPR，有助于充能效率的提高。
附图说明
图1是本申请实施例提供的一种通信系统的示意图。
图2是本申请实施例应用的一种一体式架构的示意图。
图3是本申请实施例应用的一种分离式架构的示意图。
图4是本申请实施例提供的另一种通信系统的示意图。
图5是本申请实施例提供的一种通信方法500的示意性流程图。
图6是本申请实施例提供的一种激励信号的示意图。
图7是本申请实施例提供的一种发送信号和接收信号的示意图。
图8是本申请实施例提供的另一种激励信号的示意图。
图9是本申请实施例提供的另一种发送信号和接收信号的示意图。
图10是本申请实施例提供的另一种通信方法1000的示意性流程图。
图11是本申请实施例提供的一种有源设备分组的示意图。
图12是本申请实施例提供的又一种通信方法的示意图。
图13是本申请实施例提供的通信装置1300的示意性框图。
图14是本申请实施例提供的另一种通信装置1400的示意性框图。
图15是本申请实施例提供一种芯片系统1500的示意图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
物联网设备包括有源设备和无源设备。有源设备和无源设备的供能方式不同，有源设备使用自身的电池或者连接的电源进行供能，而无源设备通常需要从环境中的电磁波信号中获取能量，进行充能。例如，无源设备可以利用来自有源设备的电磁波信号进行充能，其中，用于为无源设备充能的电磁波信号可以称为充能信号，也可以称为激励信号。无源设备接收到激励信号后，将激励信号的功率转化成实际可用于信号收发和处理的功率。无源设备接收到的信号功率越高，则获取的能量越多，充能效率越高。能否提高为无源设备充能的效率是实现无源设备大规模应用的关键。
本申请实施例提供了一种通信方法、系统和装置，可以提高为无源设备充能的效率。本申请实施例可以应用于多种通信系统，包括但不限于射频识别(radio frequency identification，RFID)系统、反向散射通信(backscatter communication)系统、无源物联网(passive IoT)系统、长期演进(long term evolution，LTE)系统、第五代(fifth generation，5G)新空口(new radio，NR)系统，LTE和5G混合组网的系统、非陆地通信网络(non-terrestrial network，NTN)系统、设备到设备(device-to-device，D2D)通信系统、机器到机器(machine to machine，M2M)通信系统、无线局域网(wireless local area network，WLAN)等。本申请实施例还可以应用于未来的通信系统，例如第六代(6th generation，6G)移动通信系统等。
图1是本申请实施例提供的一种通信系统100的示意图，该系统包括至少两个有源设备，例如第一有源设备101-1、第二有源设备101-2等。有源设备可以向无源设备发送激励信号，为无源设备充能。可选的，有源设备还向无源设备发送下行数据，或者向无源设备发送用于承载上行数据的载波信号。
有源设备的实现方式有多种。可选的，有源设备可以是网络设备。该网络设备是任意一种能够和终端设备进行无线通信的网络设备或可设置于该网络设备的芯片或芯片系统，可以用于实现无线物理控制功能、资源调度和无线资源管理、无线接入控制、或移动性管理等功能。网络设备可以为支持有线接入 的设备，也可以为支持无线接入的设备。示例性的，该网络设备可以为接入网(access network，AN)/无线接入网(radio access network，RAN)设备，由一个或多个AN/RAN节点组成。AN/RAN节点可以为：基站(nodeB，NB)、宏基站、微基站、中继站、增强型基站(enhance nodeB，eNB)、下一代基站(NR nodeB，gNB)、无线网络控制器(radio network controller，RNC)、基站控制器(base station controller，BSC)、基站收发台(base transceiver station，BTS)、家庭基站(例如，家庭演进型基站(home evolved nodeB)、家庭基站(home nodeB，HNB))、基带单元(base band unit，BBU)、接入点(access point，AP)、无线保真AP(wireless fidelity AP，Wi-Fi AP)、传输接收点(transmission reception point，TRP)、传输点(transmission point，TP)、无线中继节点、接入回传一体化(integrated access and backhaul，IAB)中的无线回传节点(即IAB节点)、或其它类型的接入节点。
可选的，有源设备也可以是终端设备。该终端设备可以是具有无线收发功能的设备或可设置于该终端设备的芯片或芯片系统，也可以称为用户设备(user equipment，UE)或者终端(terminal)或者移动台(mobile station，MS)或者移动终端(mobile terminal，MT)等。示例性的，该终端设备可以是具有无线连接功能的手持式设备、车载设备等，如手机(mobile phone)、平板电脑、笔记本、掌上电脑、带无线收发功能的电脑等。该终端设备还可以是移动互联网设备(mobile internet device，MID)、可穿戴设备、虚拟现实(virtual reality，VR)终端、增强现实(augmented reality，AR)终端、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程手术(remote medical surgery)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端、车载终端、具有车对车(vehicle-to-vehicle，V2V)通信能力的车辆、智能网联车、有无人机对无人机(UAV to UAV，U2U)通信能力的无人机等等，不予限制。该终端设备还可以是RFID系统或反向散射通信系统中的读写器、阅读器、激励器、辅助器等。
可选的，通信系统100还包括无源设备102。无源设备可以和有源设备进行通信，其中，从有源设备到无源设备的方向称为下行，也称为前向；从无源设备到有源设备的方向称为上行，也称为后向。无源设备可以接收来自有源设备的激励信号，从中获取能量，进行充能。可选的，无源设备从激励信号中获取到能量后，可以直接使用该能量进行信号的收发和/或处理，或者，具有储能能力的无源设备也可以先存储能量，后续需要时再使用。无源设备还可以和有源设备进行数据交互，例如，无源设备接收有源设备发送的下行数据，又如，无源设备接收有源设备发送的载波信号，接着将上行数据调制在该载波信号上，反向散射到有源设备。其中，无源设备传输上行数据的方式可以称为反向散射通信。
无源设备102可以是任意一种能够从有源设备发送的信号中获取能量的终端设备或可设置于该终端设备的芯片或芯片系统。例如，无源设备102可以是自身不产生载波信号，通过反向散射通信传输上行数据，且反射信号不经过功率放大的终端设备，该类型的终端设备通常不包括电池，也可以称为免电池设备、被动设备等。无源设备也可以是自身不产生载波信号，通过反向散射通信传输上行数据，但可以对反射信号进行功率放大的终端设备，该类型的终端设备通常具备一定的储能能力。这种具有有限的储能能力的设备也可以称为半无源设备(semi-passive device)或半有源设备，在本申请的各实施例和各系统、场景中统一称为无源设备。
示例性的，通信系统100可以是RFID系统。RFID系统基于非接触式的自动识别技术，可以用于实现身份识别，也可以用于实现用户数据读取和写入。在RFID系统中，无源设备102可以为标签，有源设备可以是一体式架构下的读写器(reader)，也可以是分离式架构下的辅助器(helper)。以图2示出的一体式架构为例，读写器201通过向标签202发送激励信号为标签202提供能量，标签202接收读写器201发送的激励信号进行充能。此外，读写器201可以向标签202发送下行数据，标签202通过反射信号向读写器201发送上行数据。通过这种方式读写器201可以识别标签202，以及对标签202进行读写等操作。其中，读写器201也可以称为读写设备、阅读器、阅读设备等。
如图3所示的分离式架构包括辅助器301、接收器(receiver)302和标签202。辅助器负责向标签202发送激励信号，接收器302负责从标签202接收反射信号。另外，接收器302可以通过直接或间接的方式向辅助器301发送数据，辅助器301将该数据转发给标签202。辅助器301和接收器302可以是同一读写器中分别负责发送功能和接收功能的部分，也可以是不同的读写器。辅助器301也可以称为激励器、激励设备、射频源等。
示例性的，通信系统100也可以是无源物联网系统。无源物联网系统是一种支持无源设备的蜂窝物 联通信系统，面向对终端设备成本和功耗更敏感的下一级物联市场，通常与蜂窝网络共部署。在无源物联网系统中，无源设备和有源设备可以有多种实现方式。示例性的，无源设备可以是IoT设备，例如无源标签、半无源标签、反向散射终端设备等。有源设备可以是终端设备，例如读写器、激励器、手机等，也可以是蜂窝网络中的AN/RAN设备或节点，例如基站、宏基站、微基站、中继站、eNB、gNB或其它接入节点。其中，无源物联网也可以称为被动式物联网、环境物联网(ambient IoT)、环境能量使能的物联网(ambient power-enabled IoT)、环境反向散射通信(ambient backscattering communication)等。
可选的，如图4所示，通信系统100中还可以包括集中控制设备103。集中控制设备103可以通过与有源设备进行通信来实现对有源设备的控制。集中控制设备可以和有源设备直接通信，或者通过通信系统中的其他设备和有源设备间接通信。示例性的，集中控制设备可以调度有源设备使用的传输资源，控制有源设备收发信号的行为，也可以通过有源设备和无源设备交互数据。集中控制设备与有源设备间的通信可以采用5G NR技术或者5G侧行链路(sidelink，SL)技术。
集中控制设备103的实现方式可以参照上述网络设备或终端设备中的举例，此处不再赘述。示例性的，在无源物联网系统中，集中控制设备可以为基站、宏基站、微基站、eNB、gNB等。
图5是本申请实施例提供的一种通信方法500的示意性流程图，该方法可以应用于上述通信系统100。下面以一体式架构为例对方法500进行详细说明，类似的，该方法也适用于分离式架构，例如，以下说明中的有源设备相当于分离式架构下的辅助器。如图5所示，该方法包括如下多个步骤。
S501、至少两个有源设备在第一时间段向无源设备发送激励信号，该激励信号用于为无源设备充能。
以至少两个有源设备包括第一有源设备101-1和第二有源设备101-2为例，步骤S501可以包括以下步骤S501a和S501b。
S501a、第一有源设备在第一时间段向无源设备发送第一激励信号，第一激励信号对应第一频率配置。
S501b、第二有源设备在第一时间段向无源设备发送第二激励信号，第二激励信号对应第二频率配置。
其中，第一频率配置不同于第二频率配置。基于该方式，第一有源设备和第二有源设备向无源设备发送不同频率配置对应的激励信号，可以降低不同激励信号功率相消的可能性，增大无源设备接收的信号功率，使得充能效率提高。
可选的，激励信号是恒包络信号。恒包络信号指幅度保持不变的信号，例如单音信号或频移键控(frequency shift keying，FSK)信号。其中，单音信号指具有单一频率的正弦或者余弦信号，也可以称为单频信号。FSK信号是根据调制阶数、调制符号序列、调制速率和包括多个频率值的频率组确定的信号，其中，频率组所包括的频率值的数量等于调制阶数。
恒包络信号的峰值功率和平均功率之比，即峰均功率比(peak-to-average power ratio，PAPR)较低，第一有源设备和第二有源设备可以以较高的平均功率(如峰值功率)发送激励信号，从而提高为无源设备充能的效率。
可选的，激励信号是非恒包络信号，例如多音信号。多音信号是由多个不同频率的正弦或者余弦信号叠加而成的信号。在平均功率相同的情况下，多音信号的PAPR比单音信号的PAPR高。后文的实施例将以多音信号作为非恒包络信号的举例进行说明。
可选的，第一频率配置不同于第二频率配置指：第一频率配置中的一个或多个参数不同于第二频率配置中的一个或多个参数，例如以下实现方式1.1-1.6中的一种。
1)第一激励信号和第二激励信号均为恒包络信号，例如以下方式1.1-1.3。
方式1.1、第一频率配置中的一个或多个参数包括第一频率值，第一激励信号是频率为第一频率值的单音信号；第二频率配置中的一个或多个参数包括第二频率值，第二激励信号是频率为第二频率值的单音信号；第一频率值不同于第二频率值。
在该实现方式下，第一有源设备根据第一频率配置包括第一频率值，可以确定第一激励信号是频率为第一频率值的单音信号。例如，当第一频率值为1赫兹(Hz)，则第一有源设备可以确定第一激励信号为如图6所示的频率为1Hz的单音信号。同样的，第二有源设备根据第二频率配置包括第二频率值，确定第二激励信号是频率为第二频率值的单音信号。其中，第一频率值不同于第二频率值，也就是，第一有源设备和第二有源设备同时向无源设备发送不同频率的单音信号。
图7示出了在第一频率值为1Hz，第二频率值为2Hz的情况下，第一有源设备和第二有源设备分别向无源设备发送的单音信号，以及无源设备接收到的信号。可以看出，不同频率值的单音信号到达无源设备时相叠加，叠加后的信号具有时域纺锤形包络，PAPR较高，使得充能效率提高。
方式1.2、第一频率配置中的一个或多个参数包括第一频率值，第一激励信号是频率为第一频率值的单音信号；第二频率配置中的一个或多个参数包括调制阶数、调制符号序列、调制速率和包括多个频率值的频率组，第二激励信号是与第二频率配置中的调制阶数、调制符号序列、调制速率和频率组对应的FSK信号。
在该实现方式下，第一有源设备根据第一频率配置包括第一频率值，可以确定第一激励信号是频率为第一频率值的单音信号。第二有源设备根据第二频率配置包括调制阶数N、调制符号序列、调制速率和包括多个频率值的频率组，可以确定第二激励信号是FSK信号，该FSK信号的波形由第二频率配置包括的参数决定。
第二频率配置中的调制符号序列可以是任意进制的数字序列，当调制符号序列不是N进制的数字序列时，第二有源设备可以将其转换成N进制的数字序列。下面以调制符号序列为N进制的数字序列为例进行说明。调制符号序列的长度不限，即调制符号序列包括的调制符号的数量不限。第二频率配置中的频率组所包括的多个频率值的数量等于N，N个不同的频率值分别对应调制符号0，…，N-1。第二频率配置中的调制速率用于确定调制符号序列中的每个调制符号对应的频率值的正弦或余弦信号所持续的时长。根据第二频率配置确定的FSK信号的时长由调制符号序列的长度和调制速率决定，该FSK信号的时长可以小于或等于或大于第一时间段的长度。其中，当该FSK信号的时长小于第一时间段的长度，第二有源设备可以在第一时间段内重复发送该FSK信号。
示例性的，当N＝2，调制符号序列为0110011011，频率组包括1Hz和2Hz，分别对应调制符号0和1，调制速率为1符号每秒，即每个调制符号对应的频率的单音信号持续1秒，则第二有源设备可以确定第二激励信号为如图8所示的FSK信号。
基于该方式，第一有源设备向无源设备发送单音信号，第二有源设备同时向无源设备发送FSK信号。FSK信号的抗干扰能力强，在发生频率选择性衰落的情况下有利于保障无源设备接收到的信号功率，从而实现充能效率的提高。
可选的，第二频率配置中的频率组不包括第一频率值，可以进一步降低不同激励信号功率相消的可能性，从而更大程度上提高为无源设备充能的效率。
方式1.3、第一频率配置中的一个或多个参数包括调制阶数、调制符号序列、调制速率和包括多个频率值的频率组，第一激励信号是与所述第一频率配置中的调制阶数、调制符号序列、调制速率和频率组对应的FSK信号；第二频率配置中的一个或多个参数包括调制阶数、调制符号序列、调制速率和包括多个频率值的频率组，第二激励信号是与第二频率配置中的调制阶数、调制符号序列、调制速率和频率组对应的FSK信号；第一频率配置中的调制阶数、调制符号序列、调制速率或频率组不同于第二频率配置中的调制阶数、调制符号序列、调制速率或频率组。
在该实现方式下，第一有源设备根据第一频率配置中的调制阶数、调制符号序列、调制速率和频率组确定第一激励信号是FSK信号，第二有源设备根据第二频率配置中的调制阶数、调制符号序列、调制速率和频率组确定第二激励信号是FSK信号。进一步的，第一频率配置中的调制阶数、调制符号序列、调制速率或频率组不同于第二频率配置中的调制阶数、调制符号序列、调制速率或频率组。
其中，第一频率配置中的调制阶数、调制符号序列、调制速率或频率组不同于第二频率配置中的调制阶数、调制符号序列、调制速率或频率组可以是以下情况(1)-(5)中的一种：
(1)第一频率配置中的调制阶数不同于第二频率配置中的调制阶数。
(2)第一频率配置中的调制符号序列不同于第二频率配置中的调制符号序列。
(3)第一频率配置中的调制速率不同于第二频率配置中的调制速率。
(4)第一频率配置中的频率组不同于第二频率配置中的频率组，即第一频率配置中的频率组所包括的多个频率值中，至少一个频率值不同于第二频率配置中的频率组所包括的多个频率值。
(5)以上情况(1)-(4)的任意组合。
上述情况(4)是指，在第一频率配置中的频率组所包括的多个频率值中，可以有一个频率值不同于第二频率配置中的频率组所包括的多个频率值，或者有多个频率值不同于第二频率配置中的频率组所包括的多个频率值。当第一频率配置中的频率组和第二频率配置中的频率组包括的不同频率值越多，无源设备从多个设备接收到的信号功率越高，获取的能量越高。
示例性的，第一频率配置中的调制阶数为2，调制符号序列为0110011011，频率组包括1Hz和2Hz，分别对应调制符号0和1，调制速率为1符号每秒，第二频率配置中的调制阶数为2，调制符号序列为 0110011011，频率组包括1Hz和3Hz，分别对应调制符号0和1，调制速率为1符号每秒，此时第一有源设备和第二有源设备分别发送的FSK信号以及无源设备接收到的信号如图9所示。两个有源设备发送的激励信号都为抗干扰能力强的FSK信号，可以进一步保障无源设备接收到的信号功率，从而实现充能效率的提高。
2)第一激励信号为恒包络信号，第二激励信号为非恒包络信号，例如以下方式1.4-1.5。
方式1.4、第一频率配置中的一个或多个参数包括第一频率值，第一激励信号是频率为第一频率值的单音信号；第二频率配置中的一个或多个参数包括多个频率值，第二激励信号是与第二频率配置中的多个频率值对应的多音信号。
在该实现方式下，第一有源设备根据第一频率配置包括第一频率值，可以确定第一激励信号是频率为第一频率值的单音信号。第二有源设备根据第二频率配置中的多个频率值，可以确定第二激励信号是与第二频率配置中的多个频率值对应的多音信号，也就是，该多音信号由第二频率配置中的各个频率值对应的正弦或余弦信号相叠加而成。
基于该方式，第一有源设备和第二有源设备分别向无源设备发送单音信号和多音信号，可以增大无源设备接收到的信号的PAPR，提高为无源设备充能的效率。
可选的，第二频率配置中的多个频率值不同于第一频率值，从而第二有源设备发送的多音信号不包括第一频率值的正弦或余弦信号，可以进一步提高无源设备从多个信号中获取的能量，实现充能效率的提高。
方式1.5、第一频率配置中的一个或多个参数包括调制阶数、调制符号序列、调制速率和包括多个频率值的频率组，第一激励信号是与所述第一频率配置中的调制阶数、调制符号序列、调制速率和频率组对应的FSK信号；第二频率配置中的一个或多个参数包括多个频率值，第二激励信号是与第二频率配置中的多个频率值对应的多音信号。
在该实现方式下，第一有源设备根据第一频率配置中的调制阶数、调制符号序列、调制速率和频率组可以确定第一激励信号是FSK信号，第二有源设备根据第二频率配置中的多个频率值可以确定对应的第二激励信号，即第二激励信号是由该多个频率值对应的正弦或余弦信号相叠加而成的多音信号。FSK信号和多音信号到达无源设备时功率相消的可能性更小，能够进一步保障无源设备接收的信号功率，提高为无源设备充能的效率。
可选的，在第一频率配置中的频率组所包括的多个频率值中，至少一个频率值不同于第二频率配置中的多个频率值。例如，在第一频率配置中的频率组所包括的多个频率值中，有一个频率值不同于第二频率配置中的多个频率值，或者有多个频率值不同于第二频率配置中的多个频率值。当第一频率配置中的频率组所包括的多个频率值中有更多的频率值和第二频率配置中的多个频率值不同，无源设备从FSK信号和多音信号中获取的能量越高，可以实现更加高效的充能。
3)第一激励信号和第二激励信号均为非恒包络信号，例如以下方式1.6。
方式1.6、第一频率配置中的一个或多个参数包括多个频率值，第一激励信号是与第一频率配置中的多个频率值对应的多音信号；第二频率配置中的一个或多个参数包括多个频率值，第二激励信号是与第二频率配置中的多个频率值对应的多音信号；在第一频率配置中的多个频率值中，至少一个频率值不同于第二频率配置中的多个频率值。
在该实现方式下，第一有源设备可以确定第一激励信号是第一频率配置中的多个频率值对应的正弦或余弦信号相叠加而成的多音信号，第二有源设备可以确定第二激励信号是第二频率配置中的多个频率值对应的正弦或余弦信号相叠加而成的多音信号。两个有源设备发送的激励信号都是PAPR较高的多音信号，可以进一步提高无源设备侧的接收信号的PAPR，有助于充能效率的提高。
其中，在第一频率配置中的多个频率值中，可以有一个频率值不同于第二频率配置中的多个频率值，或者有多个频率值不同于第二频率配置中的多个频率值。第一频率配置和第二频率配置包括更多不同的频率值，无源设备从多个多音信号中获取的能量越高。
可选的，在上述步骤S501之前，方法500还包括以下步骤S502。
S502、至少两个有源设备接收来自集中控制设备的第一指示消息，第一指示消息用于指示至少两个有源设备在第一时间段向无源设备发送激励信号。
示例性的，在至少两个有源设备包括第一有源设备101-1和第二有源设备101-2的场景下，步骤S502包括如下步骤S502a和S502b。
S502a、第一有源设备接收来自集中控制设备的第一指示消息，第一指示消息用于指示第一有源设备在第一时间段向无源设备发送激励信号。
S502b、第二有源设备接收来自集中控制设备的第一指示消息，第一指示消息用于指示第二有源设备在第一时间段向无源设备发送激励信号。
可选的，第一指示消息包括指示第一时间段的信息。具体实现方式包括以下方式2.1和2.2。
方式2.1、指示第一时间段的信息包括第一时间和第二时间，第一时间段从至少两个有源设备接收到第一指示消息后的第一时间开始，持续第二时间。至少两个有源设备根据第一指示消息中的第一时间和第二时间，在接收到第一指示消息后的第一时间开始向无源设备发送激励信号，持续第二时间结束。
其中，第一时间和第二时间的单位可以是微秒、毫秒、秒，也可以是符号、时隙、子帧、帧的数量，第一时间和第二时间的单位可以相同，也可以不同，本申请实施例对此不做限制。
需要说明的是，集中控制设备可以同时向至少两个有源设备发送第一指示消息，也可以在不同时间分别向至少两个有源设备发送第一指示消息，至少两个有源设备中的各个有源设备接收到的第一指示消息中的第一时间和第二时间可能相同的，也可能不同。集中控制设备发送第一指示消息的方式有多种，第一时间和第二时间的取值方式也有多种，只要能够实现至少两个有源设备根据接收到第一指示消息的时间以及第一指示消息包括的第一时间和第二时间确定出相同的第一时间段，都属于本申请实施例保护的范围。
示例性的，第一有源设备101-1和第二有源设备101-2与集中控制设备103之间的距离不同，当集中控制设备同时向第一有源设备和第二有源设备发送第一指示消息时，第一有源设备和第二有源设备接收到第一指示消息的时间不同。此时，集中控制设备可以通过为第一有源设备和第二有源设备配置不同的第一时间和/或第二时间，使得第一有源设备和第二有源设备确定出的第一时间段相同，从而实现第一有源设备和第二有源设备同时向无源设备发送激励信号。或者，集中控制设备也可以通过在不同的时间分别向第一有源设备和第二有源设备发送第一指示消息，使得第一有源设备和第二有源设备同时接收到第一指示消息，进而根据相同的第一时间和第二时间确定相同的第一时间段。
方式2.2、指示第一时间段的信息包括第一时间段所在的时域资源位置，例如，时域资源的编号，其中，时域资源可以是符号、时隙、子帧、帧等。例如，第一时间段为时隙#0～#4，则至少两个有源设备确定在接收到第一指示消息后的第一个时隙#0～#4为第一时间段。
可选的，在上述步骤S501之前，方法500还包括以下步骤S503。
S503、至少两个有源设备接收来自集中控制设备的第二指示消息，第二指示消息包括与激励信号对应的频率配置中的一个或多个参数。
示例性的，在至少两个有源设备包括第一有源设备101-1和第二有源设备101-2的场景下，步骤S503包括如下步骤S503a和S503b。
S503a、第一有源设备接收来自集中控制设备的第二指示消息，第二指示消息包括与第一激励信号对应的第一频率配置中的一个或多个参数。
S503b、第二有源设备接收来自集中控制设备的第二指示消息，第二指示消息包括与第二激励信号对应的第二频率配置中的一个或多个参数。
可选的，第二指示消息包括与激励信号对应的频率配置中的一个或多个参数具体是，第二指示消息包括与该频率配置中的一个或多个参数对应的索引值。在该实现方式下，有源设备和集中控制设备存有频率配置表格，该表格包括频率配置中的一个或多个参数所有可能的取值和对应的索引值。表1给出了频率配置表格的一种示例。示例性的，频率配置表格可以是集中控制设备发送给有源设备的，或者，是其他网络设备为集中控制设备和有源设备配置的，或者，是执行步骤S503之前有源设备已存储的信息，本申请实施例对此不做限制。至少两个有源设备从第二指示消息中获取索引值，根据该索引值查找频率配置表格，确定与激励信号对应的频率配置中的一个或多个参数。基于该方式，有源设备根据第二指示消息中的索引值即可确定频率配置中的参数，使得信令开销降低。
表1频率配置表格示例

可选的，步骤S503和步骤S502为不同步骤，第二指示消息和步骤S502中的第一指示消息是不同的消息，也就是，集中控制设备通过不同的指示消息分别指示至少两个有源设备发送激励信号的时间和激励信号对应的频率配置。基于该方式，集中控制设备可以根据需要发送第一指示消息和第二指示消息中的一个或多个，例如在频率配置较为固定的情况下，集中控制设备可以减少发送第二指示消息的次数，从而降低信令开销。
可选的，步骤S503和步骤S502为同一步骤，第二指示消息和步骤S502中的第一指示消息是同一条消息，也就是，集中控制设备在同一条指示消息中指示发送激励信号的时间和激励信号对应的频率配置，可以提高集中控制设备的信息传递效率。
可选的，与激励信号对应的频率配置中的一个或多个参数可以包括在第二指示消息中，其他参数可以包括在第一指示消息中。示例性的，频率配置包括调制阶数、调制符号序列、调制速率和频率组，第二指示消息包括该频率配置中的调制阶数和调制速率，第一指示消息包括调制符号序列和频率组。
具体的，集中控制设备向至少两个有源设备发送第二指示消息可以采用但不限于以下方式3.1-3.3。
方式3.1、集中控制设备同时向至少两个有源设备发送第二指示消息。示例性的，集中控制设备可以向至少两个有源设备广播第二指示消息，第二指示消息包括该至少两个有源设备发送的激励信号对应的频率配置。可选的，第二指示消息还包括该至少两个有源设备的标识信息，每个标识信息和一个频率配置对应，即该标识信息用于指示对应的频率配置是哪个有源设备可用的。例如，该标识信息可以是有源设备的身份信息。
对应的，有源设备接收到广播的第二指示消息后，查找第二指示消息中是否存在自己的标识信息，如果有，则根据该标识信息对应的频率配置确定要向无源设备发送的激励信号，如果没有，则忽略该第二指示消息。
基于该方式，集中控制设备可以通过一条指示消息向多个有源设备发送不同有源设备的频率配置，各有源设备可以根据指示消息中的标识信息和频率配置的对应关系确定自身可用的频率配置，提高集中控制设备的信息传递效率。
方式3.2、集中控制设备通过和至少两个有源设备中的各个有源设备之间的专用信道分别向各个有源设备发送第二指示消息。
对应的，有源设备如果从该专用信道接收到第二指示消息，则根据第二指示消息包括的频率配置确定要向无源设备发送的激励信号。这样可以提高第二指示消息的传输可靠性，降低有源设备处理第二指示消息的复杂度，降低处理时延。
方式3.3、集中控制设备通过公共信道向至少两个有源设备中的各个有源设备分别发送第二指示消息，其中，第二指示消息包括标识信息，用于指示该第二指示消息是发送给哪个有源设备的，也就是，第二指示消息中的频率配置是哪个有源设备可用的。
示例性的，该标识信息可以是有源设备的身份信息。可选的，集中控制设备可以在第二指示消息的某个信元(information element，IE)中增加该标识信息，也可以使用该标识信息对第二指示消息进行加扰来提高消息传输的安全性。例如，该标识信息是有源设备的无线网络临时标识(radio network temporary identifier，RNTI)，集中控制设备使用该RNTI对第二指示消息加扰。
对应的，有源设备接收第二指示消息，如果第二指示消息包括该有源设备的标识信息，例如第二指示消息的IE包括该有源设备的标识信息，或者该有源设备能够使用自己的标识信息对第二指示消息正确解扰，则该有源设备能够确定该第二指示消息中的频率配置是自身可用的，进而根据该频率配置确定要向无源设备发送的激励信号。
需要说明的是，通信系统100中还可以包括多于两个的有源设备，即，除第一有源设备101-1和第二有源设备101-2之外，还有至少一个有源设备在第一时间段向无源设备102发送激励信号。可选的，至少一个有源设备发送的激励信号对应的频率配置可以与第一频率配置或第二频率配置相同，也可以和第一频率配置、第二频率配置都不同，本申请实施例对此不做限制。基于该方式，更多的有源设备同时向无源设备发送激励信号，可以为无源设备提供更多的能量，进一步提高为无源设备充能的效率。
可选的，完成上述充能后，无源设备还可以与第一有源设备、第二有源设备或系统中的其他有源设备进行数据交互。下面以一体式架构下无源设备与第一有源设备之间的数据交互为例进行说明。
可选的，在步骤S501之后，方法500还包括以下步骤S504。
S504、第一有源设备向无源设备发送调制了数据的下行信号。
对应的，无源设备接收来自第一有源设备的下行信号，对该下行信号进行解调，获取第一有源设备传输的数据。
第一有源设备传输的数据可以是第一有源设备生成的，也可以是集中控制设备通过第一有源设备转发给无源设备的。
可选的，在步骤S501之后，方法500还包括以下步骤S505-S507(图中未示出)。
S505、第一有源设备向无源设备发送载波信号，用于承载无源设备发送的数据。
S506、无源设备将调制了数据的载波信号反向散射给第一有源设备。
S507、第一有源设备接收来自无源设备的反向散射信号，获取无源设备传输的数据。
可选的，无源设备传输的数据可以是发送给集中控制设备的，在该情况下，第一有源设备获取无源设备传输的数据后，还向集中控制设备转发该数据。
类似的，在分离式架构下，第一有源设备作为辅助器向无源设备发送载波信号，无源设备将调制了数据的载波信号反向散射给作为接收器的另一有源设备，从而实现上行数据传输。
基于该方法，无源设备可以与有源设备和/或集中控制设备进行数据交互。
图10是本申请实施例提供的又一种通信方法1000的示意性流程图，该方法可以应用于上述通信系统100。下面以一体式架构为例对方法1000进行详细说明，类似的，该方法也适用于分离式架构，例如，以下说明中的有源设备相当于分离式架构下的辅助器。如图10所示，该方法包括如下多个步骤。
S1001、集中控制设备对至少两个有源设备进行分组，并确定每个有源设备组发送激励信号的时间和激励信号对应的频率配置。
其中，不同有源设备组内的有源设备的数量可以相同，也可以不同。
具体的，集中控制设备根据以下条件1.1-1.3确定每个有源设备组发送激励信号的时间和激励信号对应的频率配置。
条件1.1、同一有源设备组内的有源设备在相同时间段，根据相同的频率配置向无源设备发送激励信号。
条件1.2、不同有源设备组发送激励信号的时间段不同，或者频率配置不同，或者发送激励信号的时间段不同且频率配置不同。其中，不同有源设备组发送激励信号的时间段不同包括：不同有源设备组发送激励信号的时间段不完全重合。
其中，频率配置不同的具体实现方式可以参考上述方式1.1-1.6。
条件1.3、至少两个有源设备组发送激励信号的时间段相同。
图11给出了一种集中控制设备对至少两个有源设备进行分组的示意图，集中控制设备将18个有源设备分为5个组。其中，第一组和第二组各包括4个有源设备，第三、四、五组各包括2个有源设备。第一、三、四组在第一时间段发送激励信号，频率配置分别为第一频率配置、第二频率配置和第三频率配置，第二、五组在第二时间段发送激励信号，频率配置分别为第一频率配置和第三频率配置。
S1002、集中控制设备向每个有源设备组中的一个或多个有源设备发送一条或多条指示消息，用于指示该组有源设备发送激励信号的时间段和频率配置。
S1003、有源设备根据获知的时间段和频率配置向无源设备发送激励信号，用于为无源设备充能。
上述步骤S1002中，用于指示该组有源设备发送激励信号的时间段和频率配置的一条或多条指示消息可以参考方法500中的第一指示消息和第二指示消息，这里不再赘述。
下面，以集中控制设备向第一有源设备组发送指示消息，第一有源设备组向无源设备发送激励信号为例详细描述步骤S1002和S1003可能的实现方式。可选的，上述步骤S1002和S1003可以采用但不限于下列方式4.1-4.3中的一种。
方式4.1、上述步骤S1002中，集中控制设备向第一有源设备组中的所有有源设备广播指示消息。指示消息包括第一有源设备组的标识信息、第一有源设备组发送激励信号的时间段以及频率配置。在该实现方式中，集中控制设备在发送指示消息前，还向第一有源设备组中的有源设备发送第一有源设备组的标识信息。
对应的，在步骤S1003中，第一有源设备组中的有源设备接收指示消息，当该指示消息包括第一有源设备组的标识信息，则该有源设备根据该指示消息中的时间段和频率配置向无源设备发送激励信号，当该指示消息不包括第一有源设备组的标识信息，则该有源设备忽略该指示消息。
基于该方式，集中控制设备通过广播指示消息的方式将发送激励信号的时间段和频率配置告知一个组中的所有有源设备，可以降低信令开销。
方式4.2、上述步骤S1002中，集中控制设备向第一有源设备组中的每个有源设备分别发送指示消息。具体实现方式可以参考上述方式3.2和3.3。
对应的，在步骤S1003中，有源设备接收指示消息，当有源设备确认该指示消息中的时间段和频率配置是自身可用的，则该有源设备根据该时间段和频率配置向无源设备发送激励信号，否则，该有源设备忽略该指示消息。
方式4.3、上述步骤S1002中，集中控制设备可以从第一有源设备组中选择至少一个有源设备作为主有源设备，集中控制设备向该主有源设备发送指示消息，其中，指示消息包括第一有源设备组发送激励信号的时间段以及频率配置。可选的，指示消息还包括第一有源设备组的标识信号，或者，指示消息包括该主有源设备的标识信息。
可选的，指示消息还可以包括第二信息，该第二信息用于告知主有源设备将该指示消息包括的时间段和频率配置通知给第一有源设备组中的其他有源设备。本申请实施例对主有源设备获知第一有源设备组中的其他有源设备的方式不做限制，例如，集中控制设备可以在指示消息中包含第一有源设备组中的其他有源设备的身份信息，又例如，在发送指示消息前，集中控制设备可以向主有源设备发送第一有源设备组中的其他有源设备的身份信息。
对应的，在步骤S1003中，主有源设备接收来自集中控制设备的指示消息，根据该指示消息中的第一有源设备组的标识信号或主有源设备的标识信息，确定该指示消息中的时间段和频率配置是自身所在的有源设备组可用的，并将该时间段和频率配置通知第一有源设备组中的其他有源设备。如果该指示消息不包括第一有源设备组的标识信号和主有源设备的标识信息，则该主有源设备忽略该指示消息。接着，有源设备根据从指示消息中获知的或者从主有源设备获知的时间段和频率配置发送激励信号。
示例性的，主有源设备可以通过5G SL技术向第一有源设备组中的其他有源设备发送时间段和频率配置。
图12给出了通过方式4.3实现步骤S1002和S1003的示意图。如图12所示，第一有源设备组1201包括有源设备第一有源设备101-1、第二有源设备101-2、有源设备101-3和有源设备101-4。集中控制设备将第一有源设备101-1作为第一有源设备组的主有源设备，向第一有源设备101-1发送指示消息。该指示消息包括第二有源设备101-2、有源设备101-3和有源设备101-4的身份信息以及第一有源设备组1201的标识信息、第二信息、发送激励信号的时间段和对应的频率配置。第一有源设备101-1根据指示消息中的第一有源设备组的标识信息确认该指示消息中的时间段和频率配置是第一有源设备组可用的，接着根据第二信息将发送激励信号的时间段以及频率配置发送给第二有源设备101-2、有源设备101-3和有源设备101-4。
基于上述方法，集中控制设备可以统一规划多个有源设备的分组，控制不同有源设备组发送激励信号的时间段和频率配置，为无源设备提供更加高效的充能。
以上，结合图1至图12详细说明了本申请实施例提供的通信系统和通信方法。可以理解的是，各设备为了实现上述功能，需包含执行各个功能相应的硬件结构和/或软件模块。
本领域技术人员应该可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
以下结合图13至图15详细说明本申请提供的通信装置。应理解，装置实施例的描述与方法实施例的描述相互对应。因此，未详细描述的内容可以参见上文方法实施例，为了简洁，部分内容不再赘述。
本申请实施例可以根据上述方法示例对设备进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。需要说明的是，本申请实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。下面以采用对应各个功能划分 各个功能模块为例进行说明。
图13是本申请实施例提供的通信装置1300的示意性框图。该装置1300包括收发模块1301和处理模块1302。收发模块1301可以实现相应的通信功能，处理模块1302用于进行数据处理，或者说该收发模块1301用于执行接收和发送相关的操作，该处理模块1302用于执行除了接收和发送以外的其他操作。收发模块1301还可以称为通信接口或通信单元。
在一种设计中，该装置1300可对应于上文方法实施例中的有源设备，或者是有源设备的组成部件(如芯片)。
该装置1300可实现对应于上文方法实施例中的有源设备执行的步骤或者流程，其中，收发模块1301可用于执行上文方法实施例中有源设备的收发相关的操作，处理模块1302可用于执行上文方法实施例中有源设备的内部处理相关的操作。
在一种可能的实现方式，收发模块1301用于在第一时间段向无源设备发送激励信号，所述激励信号用于为所述无源设备充能。处理模块1302用于根据频率配置中的频率值确定所述激励信号是所述频率值的单音信号；所述处理模块1302还用于根据频率配置中的调制阶数、调制符号序列、调制速率和包括多个频率值的频率组确定所述激励信号是与所述频率配置中的调制阶数、调制符号序列、调制速率和频率组对应的FSK信号；所述处理模块1302还用于根据频率配置包括的多个频率值确定所述激励信号是多音信号，所述多音信号是由频率配置中的各个频率值对应的正弦或余弦信号相叠加而成的。
可选的，所述收发模块1301还用于接收来自集中控制设备的第一指示消息，所述第一指示消息用于指示有源设备在所述第一时间段向所述无源设备发送所述激励信号。相应的，所述处理模块1302还用于根据所述第一指示消息确定所述第一时间段。
可选的，所述收发模块1301还用于接收来自所述集中控制设备的第二指示消息，所述第二指示消息包括与所述激励信号对应的频率配置；所述处理模块1302还用于根据所述第二指示消息包括的标识信息确定所述第二指示消息中的频率配置是否是自身可用的频率配置。
其中，当该装置1300用于执行图5中的方法时，收发模块1301可用于执行方法中的收发信息的步骤，如步骤S501、S502、S503和S504；处理模块1302可用于执行方法中的内部处理步骤。
其中，当该装置1300用于执行图10中的方法时，收发模块1301可用于执行方法中的收发信息的步骤，如步骤S1002和S1003；处理模块1302可用于执行方法中的内部处理步骤。
应理解，各单元执行上述步骤的具体过程可参见上述实施例的说明，在此不再赘述。
在一种设计中，该装置1300可对应于上文方法实施例中的无源设备，或者是无源设备的组成部件(如芯片)。
该装置1300可实现对应于上文方法实施例中的无源设备执行的步骤或者流程，其中，收发模块1301可用于执行上文方法实施例中无源设备的收发相关的操作，例如，用于接收来自有源设备的激励信号；处理模块1302可用于执行上文方法实施例中无源设备的内部处理相关的操作。
其中，当该装置1300用于执行图5中的方法时，收发模块1301可用于执行方法中的收发信息的步骤，如步骤S501；处理模块1302可用于执行方法中的内部处理步骤。
其中，当该装置1300用于执行图10中的方法时，收发模块1301可用于执行方法中的收发信息的步骤，如步骤S1003；处理模块1302可用于执行方法中的内部处理步骤。
应理解，各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明，为了简洁，在此不再赘述。
在一种设计中，该装置1300可对应于上文方法实施例中的集中控制设备，或者是集中控制设备的组成部件(如芯片)。
该装置1300可实现对应于上文方法实施例中的集中控制设备执行的步骤或者流程，其中，收发模块1301可用于执行上文方法实施例中集中控制设备的收发相关的操作，处理模块1302可用于执行上文方法实施例中集中控制设备的内部处理相关的操作。
在一种可能的实现方式，收发模块1301用于向至少两个有源设备发送第一指示消息，所述第一指示消息用于指示所述至少两个有源设备在所述第一时间段向所述无源设备发送所述激励信号；所述收发模块1301还用于向至少两个有源设备发送第二指示消息，所述第二指示消息包括与所述激励信号对应的频率配置；处理模块1302用于在第二指示消息中包括标识信息，所述标识信息用于指示所述频率配置用于哪个有源设备。
在另一种可能的实现方式，处理模块1302用于对至少两个有源设备进行分组，确定每个有源设备组发送激励信号的时间和激励信号对应的频率配置；收发模块1301用于向每个组有源设备中的一个或多个有源设备发送一条或多条指示消息，用于指示该组有源设备发送激励信号的时间段和频率配置。
其中，当该装置1300用于执行图5中的方法时，收发模块1301可用于执行方法中的收发信息的步骤，如步骤S502和S503；处理模块1302可用于执行方法中的内部处理步骤。
其中，当该装置1300用于执行图10中的方法时，收发模块1301可用于执行方法中的收发信息的步骤，如步骤S1002；处理模块1302可用于执行方法中的内部处理步骤，如步骤S1001；
应理解，各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明，为了简洁，在此不再赘述。
还应理解，这里的装置1300以功能模块的形式体现。这里的术语“模块”可以指应用特有集成电路(application specific integrated circuit，ASIC)、电子电路、用于执行一个或多个软件或固件程序的处理器(例如共享处理器、专有处理器或组处理器等)和存储器、合并逻辑电路和/或其它支持所描述的功能的合适组件。在一个可选例子中，上述收发模块1301还可以是收发电路(例如可以包括接收电路和发送电路)，处理模块1302可以是处理电路。
上述各个方案的装置1300具有实现上述方法中的设备(如有源设备、无源设备和集中控制设备)所执行的相应步骤的功能。该功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块；例如收发模块可以由收发机替代(例如，收发模块中的发送单元可以由发送机替代，收发模块中的接收单元可以由接收机替代)，其它单元，如处理模块等可以由处理器替代，分别执行各个方法实施例中的收发操作以及相关的处理操作。
图14是本申请实施例提供另一种通信装置1400的示意图。该装置1400包括一个或多个处理器1401，处理器1401用于执行存储器1402存储的计算机程序或指令，或读取存储器1402存储的数据/信令，以执行上文各方法实施例中的方法。
可选地，如图14所示，该装置1400还包括一个或多个存储器1402，存储器1402用于存储计算机程序或指令和/或数据。该存储器1402可以与处理器1401集成在一起，或者也可以分离设置。
可选地，如图14所示，该装置1400还包括收发器1403，收发器1403用于信号的接收和/或发送。例如，处理器1401用于控制收发器1403进行信号的接收和/或发送。
作为一种方案，该装置1400用于实现上文各个方法实施例中由有源设备执行的操作。
作为另一种方案，该装置1400用于实现上文各个方法实施例中由无源设备执行的操作。
作为又一种方案，该装置1400用于实现上文各个方法实施例中由集中控制设备执行的操作。
应理解，本申请实施例中提及的处理器可以是中央处理单元(central processing unit，CPU)，还可以是其他通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现成可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
还应理解，本申请实施例中提及的存储器可以是易失性存储器和/或非易失性存储器。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)。例如，RAM可以用作外部高速缓存。作为示例而非限定，RAM包括如下多种形式：静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。
需要说明的是，当处理器为通用处理器、DSP、ASIC、FPGA或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件时，存储器(存储模块)可以集成在处理器中。还需要说明的是，本文描述的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
图15是本申请实施例提供一种芯片系统1500的示意图。该芯片系统1500(或者也可以称为处理系 统)包括逻辑电路1501以及输入/输出接口(input/output interface)1502。
其中，逻辑电路1501可以为芯片系统1500中的处理电路。逻辑电路1501可以耦合连接存储单元，调用存储单元中的指令，使得芯片系统1500可以实现本申请各实施例的方法和功能。输入/输出接口1502，可以为芯片系统1500中的输入输出电路，将芯片系统1500处理好的信息输出，或将待处理的数据或信令信息输入芯片系统1500进行处理。
作为一种方案，该芯片系统1500用于实现上文各个方法实施例中由有源设备、无源设备和集中控制设备执行的操作。例如，逻辑电路1501用于实现上文方法实施例中由有源设备、无源设备或集中控制设备执行的内部处理相关的操作；输入/输出接口1502用于实现上文方法实施例中由有源设备、无源设备或集中控制设备执行的发送和/或接收相关的操作。
上述提供的任一种装置中相关内容的解释及有益效果均可参考上文提供的对应的方法实施例，此处不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。此外，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
本申请实施例还提供一种计算机可读存储介质，其上存储有用于实现上述各方法实施例中由有源设备、无源设备或集中控制设备执行的方法的计算机指令。例如，该计算机程序被计算机执行时，使得该计算机可以实现上述方法各实施例中由有源设备、无源设备或集中控制设备执行的方法。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，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。例如，所述计算机可以是个人计算机，服务器，或者网络设备等。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(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，DVD)、或者半导体介质(例如固态硬盘(solid state disk，SSD)等。例如，前述的可用介质包括但不限于：U盘、移动硬盘、ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
为了便于理解本申请实施例，做出以下几点说明。
第一、在本申请的各个实施例中，如果没有特殊说明以及逻辑冲突，不同的实施例之间的术语和/或描述具有一致性、且可以相互引用，不同的实施例中的技术特征根据其内在的逻辑关系可以组合形成新的实施例。
第二、在本申请实施例中，“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B的情况，其中A，B可以是单数或者复数。在本申请的文字描述中，字符“/”一般表示前后关联对象是一种“或”的关系。
第三、在本申请实施例中，“第一”、“第二”以及各种数字编号(例如，#1、#2等)指示为了描述方便进行的区分，并不用来限制本申请实施例的范围。例如，区分不同的消息等，而不是用于描述特定的顺序或先后次序。应理解，这样描述的对象在适当情况下可以互换，以便能够描述本申请的实施例以外的方案。
第四、在本申请实施例中，“当……时”、“在……的情况下”以及“如果”等描述均指在某种客观情况下设备会做出相应的处理，并非是限定时间，且也不要求设备在实现时一定要有判断的动作，也不意味着存在其它限定。
第五、在本申请实施例中，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包括，例如，包括了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单 元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
第六、在本申请实施例中，“用于指示”可以包括用于直接指示和用于间接指示。当描述某一指示信息用于指示A时，可以包括该指示信息直接指示A或间接指示A，而并不代表该指示信息中一定携带有A。
本申请实施例涉及的指示方式应理解为涵盖可以使得待指示方获知待指示信息的各种方法。待指示信息可以作为整体一起发送，也可以分成多个子信息分开发送，而且这些子信息的发送周期和/或发送时机可以相同，也可以不同，本申请对具体的发送方法不作限定。
本申请实施例中的“指示信息”可以是显式指示，即通过信令直接指示，或者根据信令指示的参数，结合其他规则或结合其他参数或通过推导获得。也可以是隐式指示，即根据规则或关系，或根据其他参数，或推导获得。本申请对此不作具体限定。
第七、本申请实施例中，“存储”可以是指保存在一个或者多个存储器中。所述一个或者多个存储器可以是单独的设置，也可以是集成在编码器或者译码器、处理器、或通信装置中。所述一个或者多个存储器，也可以是一部分单独设置，一部分集成在译码器、处理器、或通信装置中。存储器的类型可以是任意形式的存储介质，本申请并不对此限定。
第八、在本申请实施例中，“通信”还可以描述为“数据传输”、“信息传输”、“数据处理”等。“传输”包括“发送”和/或“接收”，“数据”可以包括用户数据和/或控制信令，本申请对此不作限定。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (30)

  1. 一种通信方法，其特征在于，包括：
    至少两个有源设备在第一时间段向无源设备发送激励信号，所述至少两个有源设备包括第一有源设备和第二有源设备，所述激励信号用于为所述无源设备充能；
    所述至少两个有源设备在第一时间段向无源设备发送激励信号包括：
    所述第一有源设备在所述第一时间段向所述无源设备发送第一激励信号；
    所述第二有源设备在所述第一时间段向所述无源设备发送第二激励信号；
    其中，所述第一激励信号对应的第一频率配置不同于所述第二激励信号对应的第二频率配置。
  2. 根据权利要求1所述的方法，其特征在于，所述第一激励信号对应的第一频率配置不同于所述第二激励信号对应的第二频率配置包括：
    所述第一频率配置中的一个或多个参数不同于所述第二频率配置中的一个或多个参数。
  3. 根据权利要求2所述的方法，其特征在于，所述第一频率配置中的一个或多个参数包括第一频率值，所述第一激励信号是频率为所述第一频率值的单音信号；
    所述第二频率配置中的一个或多个参数包括第二频率值，所述第二激励信号是频率为所述第二频率值的单音信号；
    所述第一频率值不同于所述第二频率值。
  4. 根据权利要求2所述的方法，其特征在于，所述第一频率配置中的一个或多个参数包括第一频率值，所述第一激励信号是频率为所述第一频率值的单音信号；
    所述第二频率配置中的一个或多个参数包括调制阶数、调制符号序列、调制速率和包括多个频率值的频率组，所述第二激励信号是与所述第二频率配置中的调制阶数、调制符号序列、调制速率和频率组对应的频移键控FSK信号。
  5. 根据权利要求4所述的方法，其特征在于，所述包括多个频率值的频率组不包括所述第一频率值。
  6. 根据权利要求2所述的方法，其特征在于，所述第一频率配置中的一个或多个参数包括调制阶数、调制符号序列、调制速率和包括多个频率值的频率组，所述第一激励信号是与所述第一频率配置中的调制阶数、调制符号序列、调制速率和频率组对应的频移键控FSK信号；
    所述第二频率配置中的一个或多个参数包括调制阶数、调制符号序列、调制速率和包括多个频率值的频率组，所述第二激励信号是与所述第二频率配置中的调制阶数、调制符号序列、调制速率和频率组对应的FSK信号；
    所述第一频率配置中的调制阶数、调制符号序列、调制速率或频率组不同于所述第二频率配置中的调制阶数、调制符号序列、调制速率或频率组。
  7. 根据权利要求6所述的方法，其特征在于，所述第一频率配置中的频率组不同于所述第二频率配置中的频率组，包括：
    在所述第一频率配置中的频率组所包括的多个频率值中，至少一个频率值不同于所述第二频率配置中的频率组所包括的多个频率值。
  8. 根据权利要求2所述的方法，其特征在于，所述第一频率配置中的一个或多个参数包括第一频率值，所述第一激励信号是频率为所述第一频率值的单音信号；
    所述第二频率配置中的一个或多个参数包括多个频率值，所述第二激励信号是与所述第二频率配置中的多个频率值对应的多音信号。
  9. 根据权利要求8所述的方法，其特征在于，所述第二频率配置中的多个频率值不同于所述第一频率值。
  10. 根据权利要求2所述的方法，其特征在于，所述第一频率配置中的一个或多个参数包括调制阶数、调制符号序列、调制速率和包括多个频率值的频率组，所述第一激励信号是与所述第一频率配置中的调制阶数、调制符号序列、调制速率和频率组对应的频移键控FSK信号；
    所述第二频率配置中的一个或多个参数包括多个频率值，所述第二激励信号是与所述第二频率配置中的多个频率值对应的多音信号。
  11. 根据权利要求10所述的方法，其特征在于，在所述第一频率配置中的频率组所包括的多个频率值中，至少一个频率值不同于所述第二频率配置中的多个频率值。
  12. 根据权利要求2所述的方法，其特征在于，所述第一频率配置中的一个或多个参数包括多个频率值，所述第一激励信号是与所述第一频率配置中的多个频率值对应的多音信号；
    所述第二频率配置中的一个或多个参数包括多个频率值，所述第二激励信号是与所述第二频率配置中的多个频率值对应的多音信号；
    在所述第一频率配置中的多个频率值中，至少一个频率值不同于所述第二频率配置中的多个频率值。
  13. 根据权利要求1-12中任一项所述的方法，其特征在于，所述至少两个有源设备在第一时间段向无源设备发送激励信号之前，还包括：
    所述至少两个有源设备接收来自集中控制设备的第一指示消息，所述第一指示消息用于指示所述至少两个有源设备在所述第一时间段向所述无源设备发送所述激励信号。
  14. 根据权利要求1-13中任一项所述的方法，其特征在于，所述至少两个有源设备在第一时间段向无源设备发送激励信号之前，还包括：
    所述至少两个有源设备接收来自所述集中控制设备的第二指示消息，所述第二指示消息包括与所述激励信号对应的频率配置。
  15. 根据权利要求14所述的方法，其特征在于，所述第二指示消息还包括标识信息，所述标识信息用于指示所述频率配置用于哪个有源设备。
  16. 一种通信系统，其特征在于，包括第一有源设备和第二有源设备，其中：
    所述第一有源设备用于：在第一时间段向无源设备发送用于为无源设备充能的第一激励信号；
    所述第二有源设备用于：在所述第一时间段向所述无源设备发送用于为所述无源设备充能的第二激励信号；
    其中，所述第一激励信号对应的第一频率配置不同于所述第二激励信号对应的第二频率配置。
  17. 根据权利要求16所述的系统，其特征在于，所述系统还包括所述无源设备，用于接收所述第一激励信号和所述第二激励信号。
  18. 根据权利要求16或17所述的系统，其特征在于，所述第一激励信号对应的第一频率配置不同于所述第二激励信号对应的第二频率配置包括：
    所述第一频率配置中的一个或多个参数不同于所述第二频率配置中的一个或多个参数。
  19. 根据权利要求18所述的系统，其特征在于，所述第一频率配置中的一个或多个参数包括第一频率值，所述第一激励信号是频率为所述第一频率值的单音信号；
    所述第二频率配置中的一个或多个参数包括第二频率值，所述第二激励信号是频率为所述第二频率值的单音信号；
    所述第一频率值不同于所述第二频率值。
  20. 根据权利要求18所述的系统，其特征在于，所述第一频率配置中的一个或多个参数包括第一频率值，所述第一激励信号是频率为所述第一频率值的单音信号；
    所述第二频率配置中的一个或多个参数包括调制阶数、调制符号序列、调制速率和包括多个频率值的频率组，所述第二激励信号是与所述第二频率配置中的调制阶数、调制符号序列、调制速率和频率组对应的频移键控FSK信号。
  21. 根据权利要求20所述的系统，其特征在于，所述包括多个频率值的频率组不包括所述第一频率值。
  22. 根据权利要求18所述的系统，其特征在于，所述第一频率配置中的一个或多个参数包括调制阶数、调制符号序列、调制速率和包括多个频率值的频率组，所述第一激励信号是与所述第一频率配置中的调制阶数、调制符号序列、调制速率和频率组对应的频移键控FSK信号；
    所述第二频率配置中的一个或多个参数包括调制阶数、调制符号序列、调制速率和包括多个频率值的频率组，所述第二激励信号是与所述第二频率配置中的调制阶数、调制符号序列、调制速率和频率组对应的FSK信号；
    所述第一频率配置中的调制阶数、调制符号序列、调制速率或频率组不同于所述第二频率配置中的调制阶数、调制符号序列、调制速率或频率组。
  23. 根据权利要求22所述的系统，其特征在于，所述第一频率配置中的频率组不同于所述第二频率配置中的频率组，包括：
    在所述第一频率配置中的频率组所包括的多个频率值中，至少一个频率值不同于所述第二频率配置中的频率组所包括的多个频率值。
  24. 根据权利要求18所述的系统，其特征在于，所述第一频率配置中的一个或多个参数包括第一频率值，所述第一激励信号是频率为所述第一频率值的单音信号；
    所述第二频率配置中的一个或多个参数包括多个频率值，所述第二激励信号是与所述第二频率配置中的多个频率值对应的多音信号。
  25. 根据权利要求24所述的系统，其特征在于，所述第二频率配置中的多个频率值不同于所述第一频率值。
  26. 根据权利要求18所述的系统，其特征在于，所述第一频率配置中的一个或多个参数包括调制阶数、调制符号序列、调制速率和包括多个频率值的频率组，所述第一激励信号是与所述第一频率配置中的调制阶数、调制符号序列、调制速率和频率组对应的频移键控FSK信号；
    所述第二频率配置中的一个或多个参数包括多个频率值，所述第二激励信号是与所述第二频率配置中的多个频率值对应的多音信号。
  27. 根据权利要求26所述的系统，其特征在于，在所述第一频率配置中的频率组所包括的多个频率值中，至少一个频率值不同于所述第二频率配置中的多个频率值。
  28. 根据权利要求18所述的系统，其特征在于，所述第一频率配置中的一个或多个参数包括多个频率值，所述第一激励信号是与所述第一频率配置中的多个频率值对应的多音信号；
    所述第二频率配置中的一个或多个参数包括多个频率值，所述第二激励信号是与所述第二频率配置中的多个频率值对应的多音信号；
    在所述第一频率配置中的多个频率值中，至少一个频率值不同于所述第二频率配置中的多个频率值。
  29. 根据权利要求16-28中任一项所述的系统，其特征在于，所述第一有源设备和所述第二有源设备还用于：接收以下一项或多项：
    第一指示消息，所述第一指示消息用于指示所述第一有源设备和所述第二有源设备在所述第一时间段向所述无源设备发送所述激励信号；
    第二指示消息，所述第二指示消息包括与所述激励信号对应的频率配置。
  30. 根据权利要求29所述的系统，其特征在于，所述系统还包括：集中控制设备；
    所述集中控制设备用于：向所述第一有源设备和所述第二有源设备发送所述第一指示消息或所述第二指示消息。
PCT/CN2023/134367 2022-12-09 2023-11-27 通信方法、系统和装置 Ceased WO2024120238A1 (zh)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103236567A (zh) * 2013-04-18 2013-08-07 东莞宇龙通信科技有限公司 无线充电的方法、装置及系统
DE102013212611A1 (de) * 2013-06-28 2014-12-31 Robert Bosch Gmbh Induktionsladevorrichtung
CN105098997A (zh) * 2014-04-24 2015-11-25 深圳市金溢科技股份有限公司 一种快速批量无线充电装置及快速批量无线充电方法
CN111010216A (zh) * 2019-11-28 2020-04-14 北京优炫智能科技有限公司 一种无源设备信号管理方法
CN113852209A (zh) * 2021-09-26 2021-12-28 西安易朴通讯技术有限公司 一种无线充电设备

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9941707B1 (en) * 2013-07-19 2018-04-10 Energous Corporation Home base station for multiple room coverage with multiple transmitters
CN115152160A (zh) * 2020-01-30 2022-10-04 Idac控股公司 网络辅助波束成形能量采集信令的方法和对应装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103236567A (zh) * 2013-04-18 2013-08-07 东莞宇龙通信科技有限公司 无线充电的方法、装置及系统
DE102013212611A1 (de) * 2013-06-28 2014-12-31 Robert Bosch Gmbh Induktionsladevorrichtung
CN105098997A (zh) * 2014-04-24 2015-11-25 深圳市金溢科技股份有限公司 一种快速批量无线充电装置及快速批量无线充电方法
CN111010216A (zh) * 2019-11-28 2020-04-14 北京优炫智能科技有限公司 一种无源设备信号管理方法
CN113852209A (zh) * 2021-09-26 2021-12-28 西安易朴通讯技术有限公司 一种无线充电设备

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4618668A4 *

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