WO2023246579A1 - 一种应用于超宽带***的信号同步的方法和通信装置 - Google Patents

一种应用于超宽带***的信号同步的方法和通信装置 Download PDF

Info

Publication number
WO2023246579A1
WO2023246579A1 PCT/CN2023/100151 CN2023100151W WO2023246579A1 WO 2023246579 A1 WO2023246579 A1 WO 2023246579A1 CN 2023100151 W CN2023100151 W CN 2023100151W WO 2023246579 A1 WO2023246579 A1 WO 2023246579A1
Authority
WO
WIPO (PCT)
Prior art keywords
signal
pilot symbol
ultra
frequency synchronization
wideband
Prior art date
Application number
PCT/CN2023/100151
Other languages
English (en)
French (fr)
Inventor
钱彬
刘辰辰
杨讯
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2023246579A1 publication Critical patent/WO2023246579A1/zh

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2657—Carrier synchronisation
    • H04L27/2659—Coarse or integer frequency offset determination and synchronisation
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver

Definitions

  • the present application relates to the field of ultra-wideband technology, and more specifically, to a method and communication device for signal synchronization applied to ultra-wideband systems.
  • Ultra-wideband (UWB) technology is a wireless carrier communication technology that achieves data transmission by sending and receiving extremely narrow pulses with a nanosecond or microsecond level.
  • UWB technology occupies a wide spectrum range and the radiation spectrum density is also very low, which gives it the advantages of strong multipath resolution, low power consumption, and strong confidentiality.
  • UWB technology realizes data transmission through extremely narrow pulses, it places high requirements on the time-frequency synchronization of the sending device and the receiving device.
  • the time-frequency synchronization of UWB signals can be assisted by providing initial time-frequency synchronization information from narrowband (NB) signals, the initial time-frequency synchronization information provided by existing NB signals has large errors, which will reduce UWB The time-frequency synchronization accuracy of the signal.
  • NB narrowband
  • This application provides a method and communication device for signal synchronization applied to ultra-wideband systems, by inserting at least one pilot symbol into the PPDU of the NB signal, and performing carrier frequency calculations based on the inserted pilot symbol and the original preamble in the PPDU.
  • Offset estimation which can support the estimation and compensation of carrier frequency offset during the data reception process, and the estimation accuracy of carrier frequency offset is higher, thereby achieving high-precision timing of UWB signals between the sending device and the receiving device. frequency synchronization.
  • the first aspect provides a method for ultra-wideband signal synchronization, including: sending a narrowband signal, the physical layer protocol data unit (PPDU) of the narrowband signal includes at least one pilot symbol, and the at least one pilot symbol The symbols are used by the receiving device to obtain the time-frequency synchronization information of the narrowband signal.
  • the at least one pilot symbol is the symbol agreed between the sending device and the receiving device; the ultra-wideband signal is sent; wherein the time-frequency synchronization information of the narrowband signal is used by the receiving device to obtain the ultra-wideband signal. Time-frequency synchronization information of broadband signals.
  • a narrowband signal can be understood as a signal with a bandwidth less than or equal to the first threshold
  • an ultra-wideband signal can be understood as a signal with a bandwidth greater than or equal to the second threshold, and the second threshold is greater than the first threshold.
  • the physical layer of the physical layer protocol data unit PPDU includes at least one pilot symbol.
  • the number of bytes of the PDSU in the PPDU of the narrowband signal is variable.
  • the receiving device By embedding at least one pilot symbol in the PSDU in the PPDU of the narrowband signal for the receiving device to obtain the time-frequency synchronization information of the narrowband signal, In this way, it is possible to estimate and compensate the carrier frequency offset during the data reception process without changing the PPDU frame structure too much, and the estimation accuracy of the carrier frequency offset is higher, thereby realizing the UWB signal transmission between the sending device and the receiving device. High-precision time-frequency synchronization between them.
  • each pilot symbol includes M bits 0, where M is an integer multiple of 4.
  • the narrowband signal and the ultra-wideband signal share a common local clock.
  • the narrowband signal and the ultra-wideband signal share a common local clock.
  • the receiving device can obtain the time-frequency synchronization information of the ultra-wideband signal based on the time-frequency synchronization information of the narrowband signal it receives, thereby realizing the receiving device and the ultra-wideband signal.
  • the sending equipment is synchronized in time and frequency of the ultra-wideband signal.
  • a method for synchronizing ultra-wideband signals including: receiving a narrowband signal.
  • the physical layer protocol data unit of the narrowband signal includes at least one pilot symbol.
  • the pilot symbol is used by the receiving device to obtain time-frequency synchronization of the narrowband signal.
  • Information, the pilot symbol is the symbol agreed between the sending device and the receiving device; receives the ultra-wideband signal; obtains the time-frequency synchronization information of the ultra-wideband signal based on the time-frequency synchronization information of the narrowband signal.
  • the physical layer service data unit of the physical layer protocol data unit includes at least one pilot symbol.
  • each pilot symbol includes M bits 0, where M is an integer multiple of 4.
  • the narrowband signal and the ultra-wideband signal share a common local clock.
  • a communication device including: a sending unit configured to send a narrowband signal.
  • the physical layer protocol data unit of the narrowband signal includes at least one pilot symbol.
  • the at least one pilot symbol is used by a receiving device to obtain the narrowband signal.
  • time-frequency synchronization information is a symbol agreed between the communication device and the receiving device;
  • the sending unit is also used to send ultra-wideband signals; wherein the time-frequency synchronization information of the narrowband signal is used by the receiving device to obtain the ultra-wideband signal time-frequency synchronization information.
  • the physical layer service data unit of the physical layer protocol data unit includes at least one pilot symbol.
  • the number of pilot symbols is associated with the number of bytes of the physical layer service data unit.
  • each pilot symbol includes M bits 0, where M is an integer multiple of 4.
  • the narrowband signal and the ultra-wideband signal share a common local clock.
  • a communication device including: a receiving unit configured to receive a narrowband signal.
  • the physical layer protocol data unit of the narrowband signal includes at least one pilot symbol.
  • the pilot symbol is used by the communication device to obtain the time-frequency of the narrowband signal. Synchronization information, the pilot symbols are the symbols agreed upon by the transmitting equipment and the communication device; the receiving unit is also used to receive ultra-wideband signals. No.; processing unit, used to obtain the time-frequency synchronization information of the ultra-wideband signal based on the time-frequency synchronization information of the narrowband signal.
  • the physical layer service data unit of the physical layer protocol data unit includes at least one pilot symbol.
  • each pilot symbol includes M bits 0, where M is an integer multiple of 4.
  • the narrowband signal and the ultra-wideband signal share a common local clock.
  • a communication device including a processor and a memory.
  • a transceiver may also be included.
  • the memory is used to store computer programs
  • the processor is used to call and run the computer programs stored in the memory, and control the transceiver to send and receive signals, so that the communication device performs the first aspect, or any possible implementation of the first aspect. method in.
  • a communication device including a processor and a memory.
  • a transceiver may also be included.
  • the memory is used to store computer programs
  • the processor is used to call and run the computer programs stored in the memory, and control the transceiver to send and receive signals, so that the communication device performs the second aspect, or any possible implementation of the second aspect. method in.
  • a communication device including a processor and a communication interface.
  • the communication interface is used to receive data and/or information and transmit the received data and/or information to the processor.
  • the processing processes the data and/or information, and the communication interface is also used to output the data and/or information processed by the processor, so that as in the first aspect, or any possible implementation of the first aspect The method is executed.
  • a communication device including a processor and a communication interface.
  • the communication interface is used to receive (or input) data and/or information, and transmit the received data and/or information to the processor.
  • the processor processes the data and/or information, and the communication interface is also used to output the data and/or information processed by the processor, so as to achieve the second aspect, or any possibility of the second aspect
  • the method in the implementation is executed.
  • a communication device including at least one processor coupled to at least one memory, and the at least one processor is configured to execute a computer program or instructions stored in the at least one memory to The communication device is caused to perform the method in the first aspect, or any possible implementation of the first aspect.
  • a communication device including at least one processor coupled to at least one memory, and the at least one processor is configured to execute a computer program or instructions stored in the at least one memory to The communication device is caused to perform the method in the second aspect, or any possible implementation manner of the second aspect.
  • a computer-readable storage medium is provided.
  • Computer instructions are stored in the computer-readable storage medium.
  • the computer instructions are run on a computer, the first aspect, or any possibility of the first aspect, is achieved.
  • the method in the implementation is executed.
  • a computer-readable storage medium is provided.
  • Computer instructions are stored in the computer-readable storage medium.
  • the second aspect, or any possibility of the second aspect is achieved.
  • the method in the implementation is executed.
  • a computer program product includes computer program code.
  • the computer program code When the computer program code is run on a computer, it enables the implementation of the first aspect, or any possible implementation of the first aspect. The method in the method is executed.
  • a computer program product including computer program code, When the computer program code is run on the computer, the method in the second aspect, or any possible implementation of the second aspect, is executed.
  • a fifteenth aspect provides a wireless communication system, including the communication device as described in the third aspect, and the communication device as described in the fourth aspect.
  • Figure 1 is a schematic structural diagram of PPDU100 in a narrowband system.
  • FIG. 2 is an architectural diagram of a communication system 200 suitable for embodiments of the present application.
  • Figure 3 is an interactive flow chart of a signal synchronization method 300 applied to an ultra-wideband system according to an embodiment of the present application.
  • Figure 4 is a schematic structural diagram of a narrowband signal PPDU 400 according to an embodiment of the present application.
  • Figure 5 is a schematic diagram of the simulation results of CFO based on PPDU400.
  • FIG. 6 is a schematic diagram of the internal structure of the transmitting device/receiving device.
  • Figure 7 is a schematic block diagram of a communication device 700 according to an embodiment of the present application.
  • Figure 8 is a schematic structural diagram of a communication device 800 according to an embodiment of the present application.
  • WPAN wireless personal area network
  • IEEE Institute of Electrical and Electronics Engineers 802.15 series.
  • WPAN can be used for communication between a small range of digital auxiliary devices such as phones, computers, and accessory devices.
  • Technologies supporting wireless personal area networks include Bluetooth, zigBee, ultra wideband (UWB), infrared data association (IrDA) connection technology, home radio frequency (HomeRF), etc. .
  • WPAN is located at the bottom of the entire network architecture and is used for wireless connections between devices within a small range, that is, point-to-point short-distance connections, which can be regarded as short-distance wireless communication networks.
  • WPAN is divided into high rate (HR)-WPAN and low rate (LR)-WPAN.
  • HR-WPAN can be used to support various high-rate multimedia applications, including high-speed Quality audio and video distribution, multi-megabyte music and image file transfer, and more.
  • LR-WPAN can be used for general business in daily life.
  • WPAN In WPAN, according to the communication capabilities of the device, it can be divided into full-function device (FFD) and reduced-function device (RFD). Communication is possible between FFDs and between FFDs and RFDs. RFDs cannot communicate directly with each other and can only communicate with FFDs or forward data through an FFD.
  • the FFD associated with the RFD is called the coordinator of the RFD.
  • RFD equipment is mainly used for simple control applications, such as light switches, passive infrared sensors, etc.
  • the amount of data transmitted is small, and it does not occupy much transmission resources and communication resources.
  • the cost of RFD is low.
  • the coordinator can also be called a personal area network (personal area network, PAN) coordinator or central control node.
  • PAN coordinator personal area network
  • the PAN coordinator is the master control node of the entire network, and there is generally only one PAN coordinator in each ad hoc network, which has membership management, link information management, and packet forwarding functions.
  • the device for example, a sending device or a receiving device
  • the device may be a device that supports the 802.15 series, for example, supports 802.15.4a and 802.15.4z, as well as those currently under discussion or subsequent versions, etc.
  • a WPAN standard device for example, supports 802.15.4a and 802.15.4z, as well as those currently under discussion or subsequent versions, etc.
  • this application can be applied to UWB-based wireless personal area network systems, including 802.15 series protocols, such as 802.15.4a protocol, 802.15.4z protocol or 802.15.4ab protocol. It can also support IEEE 802.11ax next-generation Wi-Fi protocols, such as 802.11be, Wi-Fi 7 or EHT, and 802.11b.
  • the above-mentioned devices may be communication servers, routers, switches, network bridges, computers or mobile phones, home smart devices, vehicle-mounted communication devices, etc.
  • the above-mentioned device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer.
  • This hardware layer includes hardware such as central processing unit (CPU), memory management unit (MMU) and memory (also called main memory).
  • the operating system can be any one or more computer operating systems that implement business processing through processes, such as Linux operating system, Unix operating system, Android operating system, iOS operating system or windows operating system, etc.
  • This application layer includes applications such as browsers, address books, word processing software, and instant messaging software.
  • the embodiments of the present application do not specifically limit the specific structure of the execution subject of the method provided by the embodiment of the present application, as long as the program that records the code of the method provided by the embodiment of the present application can be run to provide according to the embodiment of the present application. It suffices to communicate using a method.
  • the execution subject of the method provided by the embodiment of the present application may be FFD or RFD, or a functional module in FFD or RFD that can call a program and execute the program.
  • various aspects or features of the present application may be implemented as methods, apparatus, or articles of manufacture using standard programming and/or engineering techniques.
  • article of manufacture encompasses a computer program accessible from any computer-readable device, carrier or medium.
  • computer-readable media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks, tapes, etc.), optical disks (e.g., compact discs (CD), digital versatile discs (DVD)) etc.), smart cards and flash memory devices (e.g. erasable programmable read-only memory (EPROM), cards, sticks or key drives, etc.).
  • various storage media described herein may represent one or more devices and/or other machine-readable media for storing information.
  • machine-readable medium may include, but is not limited to, wireless channels and various other media capable of storing, containing and/or carrying instructions and/or data.
  • the technical solution of this application can also be applied to wireless LAN systems such as the Internet of Things (IoT) network or the Internet of Vehicles (V2X).
  • IoT Internet of Things
  • V2X Internet of Vehicles
  • the embodiments of the present application can also be applied to other possible communication systems, such as long term evolution (long term evolution, LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (time division) system duplex (TDD), universal mobile telecommunication system (UMTS), global interoperability for microwave access (WiMAX) communication system, fifth generation (5th generation, 5G) communication system, and future Sixth generation (6th generation, 6G) communication system, etc.
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD LTE time division duplex
  • UMTS universal mobile telecommunication system
  • WiMAX global interoperability for microwave access
  • 5G fifth generation
  • 6th generation, 6G Sixth generation
  • UWB technology uses nanosecond-level non-sinusoidal narrow pulses to transmit data, so it occupies a wide spectrum range. Because its pulses are very narrow and the radiation spectrum density is extremely low, UWB technology has the advantages of strong multipath resolution, low power consumption, and strong confidentiality.
  • UWB technology transmits data by sending and receiving extremely narrow pulses with a nanosecond or microsecond level
  • the synchronization of the UWB signal between the sending device and the receiving device is crucial.
  • the so-called synchronization of UWB signals between the sending device and the receiving device can be understood as: the physical layer protocol data unit (PPDU) of the sending device is sent in the form of pulse signals, and the receiving device determines the received multiple pulses Which pulse signal in the signal starts is the PPDU to be received; alternatively, it can also be understood as: the receiving device compensates for the deviation between the carrier frequencies between the receiving device and the sending device.
  • PPDU physical layer protocol data unit
  • the time-frequency synchronization of UWB signals by the receiving device is mainly achieved by detecting the synchronization header (SHR) in the PPDU of the narrowband (NB) signal sent to it by the sending device.
  • the NB signal sent by the sending device to the receiving device is used to provide initial time-frequency synchronization information for the UWB signal sent later by the sending device to the receiving device.
  • the receiving device can perform correlation detection on the SHR of the PPDU of the NB signal. , thereby determining the starting position of the PPDU of the UWB signal to be received and the carrier frequency offset between the sending device and the receiving device and performing carrier frequency offset compensation on it.
  • the PPDU structure of the NB signal can be seen in Figure 1.
  • FIG 1 is a schematic structural diagram of PPDU100 in a narrowband system.
  • PPDU100 includes SHR, physical header (physical header, PHR) and physical layer (physical layer, PHY) bearer field (payload field).
  • PHR physical header
  • PHY physical layer
  • the PHY bearer field can also be understood as the physical layer protocol service data unit (PSDU).
  • SHR includes preamble and frame start delimiter (start-of-frame delimiter, SFD).
  • the preamble is composed of 32 bits 0, which is used for symbol and chip synchronization.
  • the SFD is fixed 10100111, which is used to determine the end of the preamble and the beginning of the data frame.
  • PHR is used to indicate the length of PSDU, its value can be 1-127, and it is used to indicate the number of bytes of PSDU is 1-127.
  • the NB signal used to assist UWB signal time-frequency synchronization can be sent through offset-quadrature phase shift keying (O-QPSK) modulation.
  • O-QPSK offset-quadrature phase shift keying
  • the 4-bit encoded (or unencoded) bit information can be mapped to a spreading code sequence with a length of 8 or 32 bits, and passed The receiver uses the spread spectrum sequence to determine the time-frequency synchronization information of the transmitted information bits.
  • every four data bits in the PPDU 100 is mapped to a data symbol, and each data symbol is mapped to a spreading code sequence including 32 chips.
  • the mapping relationship between data symbols and spreading code sequences is shown in Table 1.
  • the preamble in the PPDU100 of the NB signal is composed of 32 bits 0, which can be mapped into 8 data symbols, specifically corresponding to data symbol 0 in Table 1.
  • the preamble in PPDU 100 can be mapped into 8 identical spreading code sequences corresponding to data symbol 0.
  • the carrier frequency offset (CFO) performed by the receiving device based on the preamble in the PPDU 100 of the NB signal of the sending device can be expressed as:
  • T represents the interval time between two chips with the same value, where the aforementioned two chips are located at the same point in the two spreading code sequences corresponding to the periodic data symbols. Location.
  • T max (32/2)*7*T c
  • T min (32/2)*1*T c
  • T c is used to represent the chip duration.
  • the above-mentioned "7” is used to represent the number of spreading code sequences separated between the first spreading code sequence and the eighth spreading code sequence corresponding to data symbol 0.
  • the above "1" is used to represent the number of spreading code sequences separated between the first spreading code sequence and the second spreading code sequence corresponding to data symbol 0.
  • the NB signal of the sending device or the receiving device has the same local clock as the UWB signal.
  • the NB signal sent by the sending device or received by the receiving device has the same local clock as the UWB signal, that is: for the sending device For a device, the NB signal it sends has the same local clock as the UWB signal; for the receiving device, the NB signal it receives has the same local clock as the UWB signal, but there is a frequency deviation between the sending device and the receiving device. of.
  • the frequency of the NB signal sent by the sending device is F1
  • the frequency of the NB signal received by the receiving device is F2,
  • ⁇ f
  • the frequency of the UWB signal sent by the sending device is F3, and the frequency of the UWB signal received by the receiving device is F3.
  • the frequency of the signal is F4,
  • A* ⁇ f, where A is a fixed parameter. Therefore, the receiving device can obtain the time-frequency synchronization information of the received UWB signal based on the received time-frequency synchronization information of the NB signal of the sending device.
  • this application provides a method and communication device for signal synchronization applied to ultra-wideband systems, by inserting at least one pilot symbol into the PPDU of the NB signal, and based on the inserted pilot symbol and the original signal in the PPDU.
  • the preamble code estimates the carrier frequency offset, which can support the estimation and compensation of the carrier frequency offset during the data reception process, and the CFO estimation accuracy is higher, thereby achieving high accuracy of UWB signals between the sending device and the receiving device. Precise time-frequency synchronization.
  • FIG. 2 is an architectural diagram of a communication system 200 suitable for embodiments of the present application.
  • the communication system 200 includes at least a sending device 210 and a receiving device 220 .
  • the sending device 210 and the receiving device 220 may communicate through UWB technology or through NB technology.
  • the transmitting device 210 and the receiving device 220 may include a UWB signal processing module and an NB signal processing module.
  • the sending device 210 includes a UWB signal sending module and an NB signal sending module.
  • the receiving device 220 includes a UWB signal receiving module and an NB signal receiving module.
  • FIG. 2 only takes the communication system 200 including one sending device and one receiving device as an example for illustration, but the communication system 200 is not limited to include more other devices, for example, it may also include more receiving devices.
  • the sending device refers to the device that sends UWB signals
  • the receiving device refers to the device that receives UWB signals.
  • the sending device and receiving device can have multiple possible application scenarios.
  • data communication between a central control node and one or more other devices in a star topology is also applicable to communication between different devices in a point-to-point topology. .
  • the method provided by this application for signal synchronization in an ultra-wideband system is also applicable to any scenario that may require UWB signal synchronization, and is not limited by the embodiments of this application.
  • Figure 3 is an interactive flow chart of a signal synchronization method 300 applied to an ultra-wideband system according to an embodiment of the present application.
  • the method flow in Figure 3 can be executed by the sending device/receiving device, or by modules and/or devices (for example, chips or integrated circuits, etc.) with corresponding functions installed in the sending device/receiving device, without limitation.
  • the following embodiments take the sending device/receiving device as an example for description.
  • Method 300 includes:
  • the sending device sends an NB signal.
  • the PPDU of the NB signal includes at least one pilot symbol.
  • the at least one pilot symbol is used by the receiving device to obtain the time-frequency synchronization information of the NB signal.
  • the pilot symbol is a symbol agreed between the sending device and the receiving device.
  • the pilot symbols may also be symbols predefined by the protocol.
  • the receiving device receives the NB signal.
  • the sending device may be the sending device 210 shown in FIG. 2
  • the receiving device may be the receiving device 220 shown in FIG. 2 .
  • a narrowband signal can be understood as a signal with a bandwidth less than or equal to the first threshold
  • an ultra-wideband signal can be understood as a signal with a bandwidth greater than or equal to the second threshold, and the second threshold is greater than the first threshold.
  • the sending device can send the NB signal through the Tx NB module.
  • the receiving device can receive the NB signal through the Rx NB module.
  • the receiving device can obtain the time-frequency synchronization information of the NB signal. In other words, the receiving device can achieve time-frequency synchronization with the NB signal.
  • the receiving device can process the NB signal through the NB signal processing module to obtain the time-frequency synchronization information of the NB signal. Further, the NB signal processing module of the receiving device provides the obtained time-frequency synchronization information of the NB signal to the UWB signal processing module of the receiving device.
  • the receiving device receives and processes the NB signal from the sending device to achieve time-frequency synchronization of the NB signal with the sending device. It can be considered that the NB signal provides time-frequency synchronization information to the receiving device. in that Based on the time-frequency synchronization information, the receiving device estimates the time-frequency synchronization information of the UWB signal from the sending device.
  • the sending device sends the UWB signal.
  • the sending device may send the UWB signal through the Tx UWB module.
  • S340 The receiving device receives the UWB signal.
  • the receiving device obtains the time-frequency synchronization information of the UWB signal according to the time-frequency synchronization information of the NB signal.
  • the receiving device obtains the time-frequency synchronization information of the UWB signal based on the time-frequency synchronization information of the NB signal. That is to say, the receiving device can obtain more accurate time-frequency synchronization information of the UWB signal based on the time-frequency synchronization information provided by the NB signal.
  • the NB signal processing module of the receiving device provides the obtained time-frequency synchronization information of the NB signal to the UWB signal processing module of the receiving device.
  • the UWB signal processing module of the receiving device obtains more accurate time-frequency synchronization information of the UWB signal based on the time-frequency synchronization information of the NB signal provided by the NB signal processing module.
  • Step 1 The sending device first sends the NB signal, and the receiving device can obtain the initial time-frequency synchronization information;
  • Step 2 After the sending device sends the NB signal, it then sends the UWB signal.
  • the time-frequency synchronization information of the NB signal may include time synchronization information and frequency synchronization information.
  • the PPDU of the NB signal received by the receiving device includes at least one pilot symbol, and this at least one pilot symbol is used by the receiving device to obtain more accurate time-frequency synchronization information of the NB signal, for example, by adding a pilot symbol symbol, the value of T max in formula (2) is larger, so the accuracy of CFO estimation will be higher, and the time-frequency synchronization information of the UWB signal is obtained based on the obtained time-frequency synchronization information of the NB signal.
  • a PPDU including at least one pilot symbol see Figure 4 .
  • the NB signal does not limit the specific form of the NB signal.
  • the NB signal may be a zigbee/Bluetooth signal, a frequency point in the 2.4GHz industrial scientific medical (ISM) band, use a 1MHz or 2MHz bandwidth, or use an O-QPSK modulation method, etc.
  • ISM industrial scientific medical
  • FIG. 4 is a schematic structural diagram of PPDU 400 according to the embodiment of the present application.
  • the PSDU of PPDU 400 includes at least one pilot symbol.
  • at least one pilot symbol may be distributed between PSDUs periodically or aperiodically.
  • the number of pilot symbols is related to the number of bytes of the PSDU. Please refer to Table 2 for details.
  • the number of pilot symbols when the number of bytes of PSDU is ⁇ 95, the number of pilot symbols can be 4. When the number of bytes of the PSDU is between 62 and 95, the number of pilot symbols can be 3. When the number of bytes of the PSDU is between 31 and 62, the number of pilot symbols can be 2. When the number of bytes of the PSDU is less than 31, the number of pilot symbols can be 1. It should be understood that the content shown in Table 2 is only taken as an example.
  • pilot symbols are periodically distributed within the PSDU.
  • the position of the pilot symbol is determined by the initial offset and interval period.
  • the initial offset refers to the number of symbols between the first pilot symbol and the starting position of the PSDU.
  • the interval period of the pilot symbols is fixed, that is, the pilot symbols are periodically inserted into the PSDU.
  • the number of bytes of the PDSU in the PPDU of the narrowband signal is variable.
  • the receiving device By embedding at least one pilot symbol in the PSDU in the PPDU of the narrowband signal for the receiving device to obtain the time-frequency synchronization information of the narrowband signal, In this way, it is possible to estimate and compensate the carrier frequency offset during the data reception process without changing the structure of the PPDU too much, and the estimation accuracy of the carrier frequency offset is higher, thereby realizing the UWB signal transmission between the sending device and the receiving device. High-precision time-frequency synchronization between them.
  • each pilot symbol includes M bits.
  • the M bits may be all bit 0s, or may be all bits 1, or may include both bits 0 and bits 1, which are not limited in the embodiment of this application.
  • the bits constituting the pilot symbols may remain unchanged within a data packet of a PPDU.
  • Figure 5 is a schematic diagram of the simulation results of CFO based on PPDU400.
  • AWGN additive white Gaussian noise
  • the number of bytes of PSDU including pilot symbols in PPDU400 is 127, and each pilot symbol consists of 4 bits. It is composed of bit 0.
  • the abscissa of Figure 5 represents the power ratio (in decibels (dB)) of each chip to the background noise, and the ordinate represents the bit error rate at the receiving end.
  • Figure 5 shows the simulation results of CFO estimation based on preamble and CFO estimation based on preamble and different numbers of pilot symbols inserted. Please refer to Figure 5 for details.
  • different curves in Figure 5 respectively show the decoding results based on different CFO estimation methods.
  • the "*" solid line curve in Figure 5 represents the decoding result of the CFO estimation method based on the preamble;
  • the "+” solid line curve represents the decoding result based on the preamble and 4 pilot symbols (each pilot symbol is represented by The decoding results of the CFO estimation method based on the preamble and 4 pilot symbols (each pilot symbol is composed of 8 all 0 bits).
  • the decoding result of It represents the decoding result of the CFO estimation method based on the preamble and 6 pilot symbols (each pilot symbol consists of 8 bits all 0 bits); the " ⁇ " solid line curve represents the decoding result of the CFO estimation method based on the preamble and 4 pilot symbols.
  • the decoding results of the CFO estimation method of symbols (each pilot symbol consists of 4 bits all 0 bits); the " ⁇ " dashed curve represents the decoding result based on the preamble and 6 pilot symbols (each pilot symbol consists of 8 bits all 0 bits)
  • the “ ⁇ ” solid line curve represents the decoding results of the CFO estimation method based on the preamble and 8 pilot symbols;
  • the “ ⁇ ” dashed line curve The line represents the decoding result of the CFO estimation method based on the preamble and 10 pilot symbols (each pilot symbol consists of 4 bits all 0 bits).
  • the simulation results based on the CFO estimation of multiple pilot symbols and preambles inserted correspond to lower codes chip to background noise power ratio, it can be shown that the CFO estimation based on multiple pilot symbols and preambles inserted has better performance and higher accuracy, thus verifying that by inserting at least one pilot in the PPDU of the NB signal symbols, and the CFO is estimated based on the inserted pilot symbols and the original preamble in the PPDU, which can support the estimation and compensation of CFO during the data reception process, which can improve the estimation accuracy of CFO, thereby enabling UWB signals to be transmitted High-precision time-frequency synchronization between the device and the receiving device.
  • the number of pilot symbols is 4 or 6.
  • each pilot symbol includes 4 bits of all 0 bits. In this way, a balance between time-frequency synchronization performance and resource overhead can be achieved.
  • FIG. 6 is a schematic diagram of the internal structure of the transmitting device/receiving device.
  • the receiving device can include an NB signal processing module and a UWB signal processing module, where the NB signal processing module can process the NB signal from the sending device received through the radio frequency module; UWB The signal processing module can process the UWB signal received from the sending device through the radio frequency module.
  • the NB signal processing module and the UWB signal processing module can exchange data and/or information.
  • the NB signal processing module will send the rough time-frequency synchronization information obtained by processing the received NB signal from the sending device to the UWB Signal processing module.
  • the sending device is also similar and will not be described again.
  • Figure 7 is a schematic block diagram of a communication device 700 according to an embodiment of the present application. As shown in FIG. 7 , the communication device 700 includes a processing unit 710 and a receiving unit 720 .
  • the communication device 700 may correspond to the receiving device in the embodiment of the present application.
  • each unit of the communication device 700 is used to implement the following functions:
  • Processing unit 710 used for:
  • the receiving unit 720 is used to receive NB signals and UWB signals.
  • the receiving unit 720 is configured to receive the UWB signal according to the time-frequency synchronization information of the NB signal;
  • the processing unit 710 is used to detect the UWB signal and obtain the time-frequency synchronization information of the UWB signal.
  • the receiving unit 720 and the sending unit 730 can also be integrated into a transceiver unit, which has the functions of receiving and sending at the same time, which is not limited here.
  • the processing unit 710 is configured to perform processing and/or operations implemented internally by the receiving device in addition to the actions of sending and receiving.
  • the receiving unit 720 is configured to perform a receiving action by the receiving device, and the sending unit 730 is configured to perform a sending action by the receiving device.
  • the communication device 700 may correspond to the sending device in the embodiment of the present application.
  • the communication device 700 further includes a sending unit 730.
  • each unit of the communication device 700 is used to implement the following functions:
  • Processing unit 710 used to generate NB signals and UWB signals
  • Sending unit 730 used for:
  • the receiving unit 720 and the sending unit 730 can also be integrated into a transceiver unit, which has the functions of receiving and sending at the same time, which is not limited here.
  • the processing unit 710 is configured to perform processing and/or operations implemented internally by the sending device in addition to actions of sending and receiving.
  • the receiving unit 720 is configured to perform a receiving action by the sending device, and the sending unit 730 is configured to perform a sending action by the sending device.
  • Figure 8 is a schematic structural diagram of a communication device 800 according to an embodiment of the present application.
  • the communication device 800 includes: one or more processors 810 , one or more memories 820 and one or more communication interfaces 830 .
  • the processor 810 is used to control the communication interface 830 to send and receive signals
  • the memory 820 is used to store a computer program
  • the processor 810 is used to call and run the computer program from the storage 820, so that the communication device 800 executes the method embodiments of the present application. Processing performed by a receiving device or a sending device.
  • the processor 810 may have the functions of the processing unit 710 shown in FIG. 7
  • the communication interface 830 may have the functions of the receiving unit 720 and/or the sending unit 730 shown in FIG. 7 .
  • the processor 810 may be configured to perform processing or operations performed internally by the communication device
  • the communication interface 830 may be configured to perform operations of sending and/or receiving of the communication device.
  • the communication device 800 may be a receiving device in the method embodiment.
  • communication interface 830 may be a transceiver of the receiving device.
  • a transceiver may include a receiver and/or a transmitter.
  • the processor 810 may be a baseband device of the receiving device, and the communication interface 830 may be a radio frequency device.
  • the communication device 800 may be a chip (or chip system) installed in the receiving device.
  • communication interface 830 may be an interface circuit or an input/output interface.
  • the communication device 800 may be a sending device in the method embodiment.
  • communication interface 830 may be a transceiver of the sending device.
  • a transceiver may include a receiver and/or a transmitter.
  • the processor 810 may be a baseband device of the sending device, and the communication interface 830 may be a radio frequency device.
  • the communication device 800 may be a chip (or chip system) installed in the sending device.
  • communication interface 830 may be an interface circuit or an input/output interface.
  • the dotted box behind the device indicates that there can be more than one device.
  • the present application also provides a computer-readable storage medium.
  • Computer instructions are stored in the computer-readable storage medium. When the computer instructions are run on the computer, the operations performed by the receiving device in each method embodiment of the present application are performed. and/or processing is performed.
  • This application also provides a computer-readable storage medium.
  • Computer instructions are stored in the computer-readable storage medium. When the computer instructions are run on the computer, the operations performed by the sending device in each method embodiment of the application and/or or processing is performed.
  • the computer program product includes computer program code or instructions.
  • the steps executed by the receiving device in each method embodiment of the application are achieved. Operations and/or processing are performed.
  • the computer program product includes computer program code or instructions.
  • the operations and/or processes performed by the sending device in each method embodiment of the application are performed. be executed.
  • the application also provides a chip.
  • the chip includes a processor.
  • a memory used to store computer programs is provided independently of the chip.
  • the processor is used to execute the computer program stored in the memory, so that the communication device installed with the chip executes any arbitrary operation. Operations and/or processes performed by a receiving device in a method embodiment.
  • the application also provides a chip.
  • the chip includes a processor.
  • a memory used to store computer programs is provided independently of the chip.
  • the processor is used to execute the computer program stored in the memory, so that the communication device installed with the chip executes any arbitrary operation. Operations and/or processes performed by a sending device in a method embodiment.
  • the chip may also include a communication interface.
  • the communication interface may be an input/output interface, or an interface circuit, etc.
  • the chip may further include the memory.
  • processors there may be one or more processors, one or more memories, and one or more memories.
  • the present application also provides a communication device (for example, it can be a chip or a chip system), including a processor and a communication interface.
  • the communication interface is used to receive (or input) data and/or information, and transfer the received Data and/or information are transmitted to the processor, the processor processes the data and/or information, and the communication interface is also used to output (or referred to as output) the data and/or information processed by the processor. , so that the operations and/or processing performed by the receiving device in any method embodiment are performed.
  • the present application also provides a communication device (for example, it can be a chip or a chip system), including a processor and a communication interface.
  • the communication interface is used to receive (or input) data and/or information, and transfer the received Data and/or information are transmitted to the processor, the processor processes the data and/or information, and the communication interface is also used to output (or referred to as output) the data and/or information processed by the processor. , so that the operations and/or processing performed by the sending device in any method embodiment are performed.
  • the present application also provides a communication device, including at least one processor, the at least one processor is coupled to at least one memory, and the at least one processor is used to execute a computer program or instructions stored in the at least one memory, so that the The communication device performs the operations and/or processing performed by the receiving device in any method embodiment.
  • the present application also provides a communication device, including at least one processor, the at least one processor is coupled to at least one memory, and the at least one processor is used to execute a computer program or instructions stored in the at least one memory, so that the The communication device performs the operations and/or processing performed by the sending device in any method embodiment.
  • This application also provides a wireless communication system, including the receiving device in the method embodiment of this application.
  • the sending device in the method embodiment may also be included.
  • the processor in the embodiment of the present application may be an integrated circuit chip and has the ability to process signals. During the implementation process, each step of the above method embodiment can be completed through an integrated logic circuit of hardware in the processor or instructions in the form of software.
  • the processor may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable Logic devices, discrete gate or transistor logic devices, discrete hardware components.
  • a general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.
  • the steps of the methods disclosed in the embodiments of the present application can be directly implemented by a hardware encoding processor, or can be executed using a encoding processor.
  • the combination of hardware and software modules in the processor is executed.
  • the software module can be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other mature storage media in this field.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories.
  • non-volatile memory can be read-only memory (ROM), programmable ROM (PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically removable memory. Erase electrically programmable read-only memory (EPROM, EEPROM) or flash memory.
  • Volatile memory can be random access memory (RAM), which is used as an external cache.
  • RAM static random access memory
  • DRAM dynamic random access memory
  • SDRAM synchronous dynamic random access memory
  • double data rate SDRAM double data rate SDRAM
  • DDR SDRAM enhanced synchronous dynamic random access memory
  • ESDRAM enhanced synchronous dynamic random access memory
  • DRRAM direct rambus RAM
  • the methods provided by the above embodiments can be implemented in whole or in part through software, hardware, firmware, or any combination thereof.
  • software When implemented using software, it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product may include one or more computer instructions.
  • the computer program instructions When the computer program instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are generated in whole or in part.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another, e.g., the computer instructions may be transferred from a website, computer, server, or data center Transmission to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more available media integrated.
  • the disclosed systems, devices and methods can be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or can be integrated into another system, or some features can be ignored, or not implemented.
  • the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application can be integrated into one processing unit, each unit can exist physically alone, or two or more units can be integrated into one unit.
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of this application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk and other media that can store program code. .

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

本申请应用于基于超宽带的无线个人局域网***，包括802.15系列协议，例如802.15.4a协议、802.15.4z协议或802.15.4ab协议等，还可以支持IEEE 802.11ax下一代Wi-Fi协议，如802.11be，Wi-Fi 7或超高吞吐量，再如802.11b。本申请提供应用于超宽带***的信号同步的方法和通信装置。方法包括：发送窄带信号，窄带信号的PPDU包括至少一个导频符号，导频符号与PPDU用于接收设备获取超宽带信号的时频同步信息；发送超宽带信号。通过基于这些***的导频符号和PPDU中的前导码估计载波频率偏移，可实现超宽带信号在发送设备与接收设备之间的高精度的时频同步。

Description

一种应用于超宽带***的信号同步的方法和通信装置
本申请要求于2022年06月21日提交中国国家知识产权局、申请号为202210703945.4、申请名称为“一种应用于超宽带***的信号同步的方法和通信装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及超宽带技术领域，更具体地，涉及一种应用于超宽带***的信号同步的方法和通信装置。
背景技术
超宽带(ultra wideband，UWB)技术是一种无线载波通信技术，其通过发送与接收具有纳秒或者微秒级以下的极窄脉冲来实现数据传输。UWB技术所占的频谱范围很宽，辐射谱密度也很低，这使其具有多径分辨能力强、功耗低以及保密性强等优点。
由于UWB技术通过极窄脉冲实现数据传输，因此其对发送设备与接收设备的时频同步提出了很高的要求。虽然可以通过由窄带(narrow band，NB)信号提供初始的时频同步信息辅助UWB信号的时频同步，但现有的NB信号所提供的初始的时频同步信息存在较大误差，会降低UWB信号的时频同步精度。
发明内容
本申请提供一种应用于超宽带***的信号同步的方法和通信装置，通过在NB信号的PPDU中***至少一个导频符号，并基于***的导频符号和PPDU中原有的前导码进行载波频率偏移的估计，这可以支持在数据接收过程中进行载波频偏的估计和补偿，且载波频率偏移的估计精度更高，进而实现UWB信号在发送设备与接收设备之间的高精度的时频同步。
第一方面，提供了一种超宽带信号同步的方法，包括：发送窄带信号，窄带信号的物理层协议数据单元(physical layer protocol data unit，PPDU)包括至少一个导频符号，该至少一个导频符号用于接收设备获取窄带信号的时频同步信息，该至少一个导频符号为发送设备与接收设备约定的符号；发送超宽带信号；其中，窄带信号的时频同步信息用于接收设备获取超宽带信号的时频同步信息。
应理解，窄带信号可以理解为带宽小于或等于第一阈值的信号，超宽带信号可以理解为带宽大于或等于第二阈值的信号，第二阈值大于第一阈值。
通过在窄带信号的PPDU中***至少一个导频符号，并基于***的导频符号和PPDU中原有的前导码一起进行载波频率偏移的估计，从而支持在数据接收过程中进行载波频率偏移的估计和补偿，且载波频率偏移的估计精度更高，进而实现UWB信号在发送设备与接收设备之间的高精度的时频同步。
结合第一方面，在第一方面的某些实现方式中，物理层协议数据单元PPDU的物理层 服务数据单元(physical layer protocol servicedata unit，PSDU)包括至少一个导频符号。
具体而言，窄带信号的PPDU中的PDSU的字节数量是可变的，通过在窄带信号的PPDU中的PSDU中嵌入至少一个用于接收设备获取窄带信号的时频同步信息的导频符号，如此，就可以在不过多更改PPDU帧结构的基础上实现在数据接收过程中进行载波频偏的估计和补偿，且载波频率偏移的估计精度更高，进而实现UWB信号在发送设备与接收设备之间的高精度的时频同步。
结合第一方面，在第一方面的某些实现方式中，每个导频符号包括M位比特0，其中，M为4的整数倍数。
结合第一方面，在第一方面的某些实现方式中，窄带信号与超宽带信号拥有共同的本地时钟。
具体而言，窄带信号与超宽带信号是拥有共同的本地时钟，如此，可以使得接收设备基于其接收的窄带信号的时频同步信息去获取超宽带信号的时频同步信息，从而实现接收设备与发送设备在超宽带信号的时频同步。
第二方面，提供了一种超宽带信号同步的方法，包括：接收窄带信号，窄带信号的物理层协议数据单元包括至少一个导频符号，导频符号用于接收设备获取窄带信号的时频同步信息，导频符号为发送设备与接收设备约定的符号；接收超宽带信号；根据窄带信号的时频同步信息获取超宽带信号的时频同步信息。
结合第二方面，在第二方面的某些实现方式中，物理层协议数据单元的物理层服务数据单元包括至少一个导频符号。
结合第二方面，在第二方面的某些实现方式中，每个导频符号包括M位比特0，其中，M为4的整数倍数。
结合第二方面，在第二方面的某些实现方式中，窄带信号与超宽带信号拥有共同的本地时钟。
第三方面，提供了一种通信装置，包括：发送单元，用于发送窄带信号，窄带信号的物理层协议数据单元包括至少一个导频符号，该至少一个导频符号用于接收设备获取窄带信号的时频同步信息，该至少一个导频符号为通信装置与接收设备约定的符号；发送单元，还用于发送超宽带信号；其中，窄带信号的时频同步信息用于接收设备获取超宽带信号的时频同步信息。
结合第三方面，在第三方面的某些实现方式中，物理层协议数据单元的物理层服务数据单元包括至少一个导频符号。
结合第三方面，在第三方面的某些实现方式中，导频符号的数量与所述物理层服务数据单元的字节数量关联。
结合第三方面，在第三方面的某些实现方式中，每个导频符号包括M位比特0，其中，M为4的整数倍数。
结合第三方面，在第三方面的某些实现方式中，窄带信号与超宽带信号拥有共同的本地时钟。
第四方面，提供了一种通信装置，包括：接收单元，用于接收窄带信号，窄带信号的物理层协议数据单元包括至少一个导频符号，导频符号用于通信装置获取窄带信号的时频同步信息，导频符号为发送设备与通信装置约定的符号；接收单元，还用于接收超宽带信 号；处理单元，用于根据窄带信号的时频同步信息获取超宽带信号的时频同步信息。
结合第四方面，在第四方面的某些实现方式中，物理层协议数据单元的物理层服务数据单元包括至少一个导频符号。
结合第四方面，在第四方面的某些实现方式中，每个导频符号包括M位比特0，其中，M为4的整数倍数。
结合第四方面，在第四方面的某些实现方式中，窄带信号与超宽带信号拥有共同的本地时钟。
第五方面，提供一种通信装置，包括处理器和存储器。可选地，还可以包括收发器。其中，存储器用于存储计算机程序，处理器用于调用并运行存储器中存储的计算机程序，并控制收发器收发信号，以使通信装置执行如第一方面，或者第一方面的任一可能的实现方式中的方法。
第六方面，提供一种通信装置，包括处理器和存储器。可选地，还可以包括收发器。其中，存储器用于存储计算机程序，处理器用于调用并运行存储器中存储的计算机程序，并控制收发器收发信号，以使通信装置执行如第二方面，或第二方面的任一可能的实现方式中的方法。
第七方面，提供一种通信装置，包括处理器和通信接口，所述通信接口用于接收数据和/或信息，并将接收到的数据和/或信息传输至所述处理器，所述处理器处理所述数据和/或信息，以及，通信接口还用于输出经处理器处理之后的数据和/或信息，以使得如第一方面，或第一方面的任一可能的实现方式中的方法被执行。
第八方面，提供一种通信装置，包括处理器和通信接口，所述通信接口用于接收(或称输入)数据和/或信息，并将接收到的数据和/或信息传输至所述处理器，所述处理器处理所述数据和/或信息，以及，通信接口还用于输出经处理器处理之后的数据和/或信息，以使得如第二方面，或第二方面的任一可能的实现方式中的方法被执行。
第九方面，提供一种通信装置，包括至少一个处理器，所述至少一个处理器与至少一个存储器耦合，所述至少一个处理器用于执行所述至少一个存储器中存储的计算机程序或指令，以使所述通信装置执行如第一方面，或第一方面的任一可能的实现方式中的方法。
第十方面，提供一种通信装置，包括至少一个处理器，所述至少一个处理器与至少一个存储器耦合，所述至少一个处理器用于执行所述至少一个存储器中存储的计算机程序或指令，以使所述通信装置执行如第二方面，或第二方面的任一可能的实现方式中的方法。
第十一方面，提供一种计算机可读存储介质，所述计算机可读存储介质中存储有计算机指令，当计算机指令在计算机上运行时，使得如第一方面，或第一方面的任一可能的实现方式中的方法被执行。
第十二方面，提供一种计算机可读存储介质，所述计算机可读存储介质中存储有计算机指令，当计算机指令在计算机上运行时，使得如第二方面，或第二方面的任一可能的实现方式中的方法被执行。
第十三方面，提供一种计算机程序产品，所述计算机程序产品包括计算机程序代码，当所述计算机程序代码在计算机上运行时，使得如第一方面，或第一方面的任一可能的实现方式中的方法被执行。
第十四方面，提供一种计算机程序产品，所述计算机程序产品包括计算机程序代码， 当所述计算机程序代码在计算机上运行时，使得如第二方面，或第二方面的任一可能的实现方式中的方法被执行。
第十五方面，提供一种无线通信***，包括如第三方面所述的通信装置，以及如第四方面所述的通信装置。
附图说明
图1是窄带***的PPDU100的结构示意图。
图2是适用于本申请实施例的通信***200的架构图。
图3是本申请实施例的应用于超宽带***的信号同步的方法300的交互流程图。
图4是本申请实施例的窄带信号的PPDU400的结构示意图。
图5是基于PPDU400的CFO的仿真结果示意图。
图6是发送设备/接收设备的内部结构的示意图。
图7是本申请实施例的通信装置700的示意性框图。
图8是本申请实施例的通信装置800的示意性结构图。
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。
本申请的技术方案可以应用于无线个人局域网(wireless personal area network，WPAN)，目前WPAN采用的标准为电气和电子工程协会(institute of electrical and electronics engineer，IEEE)802.15系列。WPAN可以用于电话、计算机、附属设备等小范围内的数字辅助设备之间的通信。支持无线个人局域网的技术包括蓝牙(bluetooth)、紫蜂(zigBee)、超宽带(ultra wideband，UWB)、红外数据协会(infrared data association,IrDA)连接技术、家庭射频(home radio frequency，HomeRF)等。从网络构成上来看，WPAN位于整个网络架构的底层，用于小范围内的设备之间的无线连接，即点到点的短距离连接，可以视为短距离无线通信网络。根据不同的应用场景，WPAN又分为高速率(high rate，HR)-WPAN和低速率(low rate，LR)-WPAN，其中，HR-WPAN可用于支持各种高速率的多媒体应用，包括高质量声像配送、多兆字节音乐和图像文档传送等。LR-WPAN可用于日常生活的一般业务。
在WPAN中，根据设备所具有的通信能力，可以分为全功能设备(full-function device，FFD)和精简功能设备(reduced-function device，RFD)。FFD之间以及FFD与RFD之间都可以通信。RFD之间不能直接通信，只能与FFD通信，或者通过一个FFD向外转发数据。这个与RFD相关联的FFD称为该RFD的协调器(coordinator)。RFD设备主要用于简单的控制应用，例如灯的开关、被动式红外线传感器等，传输的数据量较少，对传输资源和通信资源占用不多，RFD的成本较低。其中，协调器也可以称为个人局域网(personal area network，PAN)协调器或中心控制节点等。PAN协调器为整个网络的主控节点，并且每个自组网中一般只有一个PAN协调器，具有成员身份管理、链路信息管理、分组转发功能。
可选地，本申请实施例中的设备(例如，发送设备或接收设备)可以为支持802.15系列的设备，例如，支持802.15.4a和802.15.4z，以及现在正在讨论中的或后续版本等多 种WPAN制式的设备。
可选地，本申请可以应用于基于UWB的无线个人局域网***，包括802.15系列协议，例如802.15.4a协议、802.15.4z协议或802.15.4ab协议等。还可以支持IEEE 802.11ax下一代Wi-Fi协议，如802.11be，Wi-Fi 7或EHT，再如802.11b。
本申请实施例中，上述设备可以是通信服务器、路由器、交换机、网桥、计算机或者手机，家居智能设备，车载通信设备等。
在本申请实施例中，上述设备包括硬件层、运行在硬件层之上的操作***层，以及运行在操作***层上的应用层。该硬件层包括中央处理器(central processing unit，CPU)、内存管理单元(memory management unit，MMU)和内存(也称为主存)等硬件。该操作***可以是任意一种或多种通过进程(process)实现业务处理的计算机操作***，例如，Linux操作***、Unix操作***、Android操作***、iOS操作***或windows操作***等。该应用层包含浏览器、通讯录、文字处理软件、即时通信软件等应用。并且，本申请实施例并未对本申请实施例提供的方法的执行主体的具体结构特别限定，只要能够通过运行记录有本申请实施例的提供的方法的代码的程序，以根据本申请实施例提供的方法进行通信即可，例如，本申请实施例提供的方法的执行主体可以是FFD或RFD，或者，是FFD或RFD中能够调用程序并执行程序的功能模块。
另外，本申请的各个方面或特征可以实现成方法、装置或使用标准编程和/或工程技术的制品。本申请中使用的术语“制品”涵盖可从任何计算机可读器件、载体或介质访问的计算机程序。例如，计算机可读介质可以包括，但不限于：磁存储器件(例如，硬盘、软盘或磁带等)，光盘(例如，压缩盘(compact disc，CD)、数字通用盘(digital versatile disc，DVD)等)，智能卡和闪存器件(例如，可擦写可编程只读存储器(erasable programmable read-only memory，EPROM)、卡、棒或钥匙驱动器等)。另外，本文描述的各种存储介质可代表用于存储信息的一个或多个设备和/或其它机器可读介质。术语“机器可读介质”可包括但不限于，无线信道和能够存储、包含和/或承载指令和/或数据的各种其它介质。
本申请的技术方案还可以适用于物联网(internet of things，IoT)网络或车联网(vehicle to x，V2X)等无线局域网***中。当然，本申请实施例还可以适用于其他可能的通信***，例如，长期演进(long term evolution，LTE)***、LTE频分双工(frequency division duplex，FDD)***、LTE时分双工(time division duplex，TDD)、通用移动通信***(universal mobile telecommunication system，UMTS)、全球互联微波接入(worldwide interoperability for microwave access，WiMAX)通信***、第五代(5th generation，5G)通信***，以及未来的第六代(6th generation，6G)通信***等。
上述适用本申请的通信***仅是举例说明，适用本申请的通信***不限于此，在此统一说明，以下不再赘述。
在WPAN中，UWB技术利用纳秒级的非正弦波窄脉冲传输数据，因此其所占的频谱范围很宽。由于其脉冲很窄，且辐射谱密度极低，UWB技术具有多径分辨能力强、功耗低、保密性强等优点。
当前，IEEE 802系列无线标准已经写入了UWB技术，并发布了基于UWB技术的WPAN标准IEEE 802.15.4a，以及其演进版本IEEE 802.15.4z。目前UWB技术的下一代WPAN标准802.15.4ab的制定也已经提上日程。
由于UWB技术是通过发送与接收具有纳秒或微秒级以下的极窄脉冲来传输数据，因此，UWB信号在发送设备与接收设备的同步至关重要。所谓UWB信号在发送设备与接收设备的同步，可以理解为：发送设备的物理层协议数据单元(physical layer protocol data unit，PPDU)以脉冲信号的形式进行发送，接收设备确定接收到的多个脉冲信号中从哪个脉冲信号开始是其要接收的PPDU；或者，也可以理解为：接收设备补偿接收设备与发送设备之间的载波频率之间的偏差。
当前，接收设备对UWB信号的时频同步主要通过检测发送设备向其发送的窄带(narrow band，NB)信号的PPDU中的同步头(synchronization header，SHR)来实现。具体来说，发送设备先向接收设备发送的NB信号用于为发送设备向接收设备后发的UWB信号提供初始的时频同步信息，接收设备可以通过对NB信号的PPDU的SHR进行相关性检测，从而确定要接收的UWB信号的PPDU的起始位置以及发送设备与接收设备之间的载波频率偏差并对其进行载波频率偏移补偿。NB信号的PPDU结构可以参见图1。
图1是窄带***的PPDU100的结构示意图。如图1所示，PPDU100包括SHR、物理头(physical header，PHR)和物理层(physical layer，PHY)承载字段(payload field)。其中，PHY承载字段也可以理解为物理层服务数据单元(physical layer protocol service data unit，PSDU)。另外，SHR包括前导码(preamble)和帧开始分隔符(start-of-frame delimiter，SFD)。
具体地，前导码是由32位比特0构成，其用于符号和码片(chip)的同步。SFD为固定的10100111，其用于确定前导码的结束和数据帧的开始。PHR用于指示PSDU的长度，其值可以为1-127，其用于表示PSDU的字节数量为1-127个。
具体而言，用于辅助UWB信号时频同步的NB信号可以通过偏移-正交相移键控(offset-quadrature phase shift keying，O-QPSK)的调制方式进行发送。为增强***的鲁棒性(robustness)，可以在进行O-QPSK调制之前，将4位编码后(或未编码)的比特信息映射到长度为8或32位的扩频码序列上，并通过接收利用扩频后的序列来判断发送的信息比特的时频同步信息。示例性地：
PPDU中的数据比特(data bit)→数据符号→码片→O-QPSK的调制→调制后的数据
具体地，PPDU100中的每四位数据比特被映射到一个数据符号(data symbol)，每个数据符号又被映射到一个包括32个码片(chip)的扩频码序列。其中，数据符号与扩频码序列的映射关系如表1所示。
表1

如前文所述，NB信号的PPDU100中的前导码是由32位比特0组成的，其可以被映射为8个数据符号，具体对应于表1中的数据符号0。换言之，PPDU100中的前导码可以被映射为8个相同的对应于数据符号0的扩频码序列。此外，接收设备基于发送设备的NB信号的PPDU100中的前导码进行的载波频率偏移(carrierfrequency offset，CFO)可以表示为：
其中，Δf用于表示CFO，T表示取值相同的两个码片之间的间隔时间，其中，前述的两个码片分别位于周期性的数据符号对应的两个扩频码序列中的相同位置。由前文可知，前导码可以被映射为8个相同的扩频码序列。因此，T的最大取值为Tmax＝(32/2)*7*Tc，最小取值为Tmin＝(32/2)*1*Tc。Tc用于表示码片持续时间。另外，上述的“7”用于表示数据符号0对应的第一个扩频码序列与第八个扩频码序列之间间隔的扩频码序列的数量。上述的“1”用于表示数据符号0对应的第一个扩频码序列与第二个扩频码序列之间间隔的扩频码序列的数量。
由上式可知，接收设备通过NB信号的PPDU100的前导码估计Δf的精度绝对值满足如下条件：
可以理解的是，发送设备或者接收设备的NB信号与UWB信号拥有相同的本地时钟，换言之，发送设备所发送的或者接收设备所接收的NB信号与UWB信号拥有相同的本地时钟，即：对于发送设备来说，其发送的NB信号与UWB信号拥有相同的本地时钟；对于接收设备来说，其接收的NB信号与UWB信号拥有相同的本地时钟，但是发送设备与接收设备之间是存在频率偏差的。例如，发送设备发送的NB信号的频率为F1，接收设备接收到的NB信号的频率为F2，|F2-F1|＝Δf，发送设备发送的UWB信号的频率为F3，接收设备接收到的UWB信号的频率为F4，|F4-F3|＝A*Δf，其中，A为固定参数。因此，接收设备可以基于所接收的发送设备的NB信号的时频同步信息来获取所接收的UWB信号的时频同步信息。
由公式(2)可知，接收设备依据发送设备的NB信号的PPDU100中的前导码进行CFO估计所得到的结果会受到Tmax的影响，若Tmax较小，则会导致有较大的残余偏差，这会使得基于NB信号辅助的UWB信号在发送设备与接收设备的时频同步并不准确。
鉴于上述技术问题，本申请提供了一种应用于超宽带***的信号同步的方法和通信装置，通过在NB信号的PPDU中***至少一个导频符号，并基于***的导频符号和PPDU中原有的前导码进行载波频率偏移的估计，可以支持在数据接收过程中进行载波频率偏移的估计和补偿，且CFO的估计精度更高，进而实现UWB信号在发送设备与接收设备之间的高精度的时频同步。
下文将结合附图对本申请实施例的UWB信号同步的方法及其应用场景进行描述。
图2是适用于本申请实施例的通信***200的架构图。如图2所示，通信***200至少包括一个发送设备210和一个接收设备220。发送设备210和接收设备220之间可以通过UWB技术进行通信，也可以通过NB技术进行通信。发送设备210和接收设备220可以包括UWB信号处理模块和NB信号处理模块。例如，发送设备210包括UWB信号发送模块和NB信号发送模块。接收设备220包括UWB信号接收模块和NB信号接收模块。
可以理解的是，图2仅以通信***200包括一个发送设备和一个接收设备作为示例进行说明，但通信***200不限于包括更多的其它设备，例如，还可以包括更多的接收设备。另外，本申请实施例中，发送设备是指发送UWB信号的设备，接收设备是指接收UWB信号的设备。
可选地，发送设备和接收设备可以有多种可能的应用场景。示例性地，星型拓扑或点对点拓扑结构中，在星型拓扑中涉及中心控制节点同一个或多个其他设备之间的数据通信，也同样适用于点对点拓扑结构中，不同设备之间的通信。
此外，本申请提供的应用于超宽带***的信号同步的方法还适用于任何可能需要进行UWB信号同步的场景中，本申请实施例不作限定。
图3是本申请实施例的应用于超宽带***的信号同步的方法300的交互流程图。图3中的方法流程可以由发送设备/接收设备执行，或者由安装于发送设备/接收设备中的具有相应功能的模块和/或器件(例如，芯片或集成电路等)执行，不作限定。下文实施例以发送设备/接收设备为例进行说明。方法300包括：
S310、发送设备发送NB信号，NB信号的PPDU包括至少一个导频符号，至少一个导频符号用于接收设备获取NB信号的时频同步信息。
可以理解的是，导频符号(pilot symbol)为发送设备与接收设备之间约定的符号。
可选地，导频符号还可以是协议预定义的符号。
S320、接收设备接收NB信号。
示例性地，发送设备可以为图2中所示的发送设备210，接收设备可以为图2中所示的接收设备220。
应理解，窄带信号可以理解为带宽小于或等于第一阈值的信号，超宽带信号可以理解为带宽大于或等于第二阈值的信号，第二阈值大于第一阈值。
具体地，发送设备可以通过Tx NB模块发送NB信号。相应地，接收设备可以通过Rx NB模块接收该NB信号。
接收设备通过接收并处理NB信号，可以获得NB信号的时频同步信息。或者说，接收设备可以实现和NB信号的时频同步。
示例性地，接收设备可以通过NB信号处理模块处理该NB信号，获得NB信号的时频同步信息。进一步地，接收设备的NB信号处理模块将获得的NB信号的时频同步信息提供给接收设备的UWB信号处理模块。
在本申请的技术方案中，接收设备接收并处理来自于发送设备的NB信号，实现与发送设备在NB信号的时频同步，可以认为NB信号向接收设备提供了时频同步信息。在该 时频同步信息的基础上，接收设备再去估计来自于发送设备的UWB信号的时频同步信息。
S330、发送设备发送UWB信号。
示例性地，发送设备可以通过Tx UWB模块发送UWB信号。
S340，接收设备接收UWB信号。
S350、接收设备根据NB信号的时频同步信息获取UWB信号的时频同步信息。
具体地，接收设备根据NB信号的时频同步信息以获得UWB信号的时频同步信息。也即，接收设备在NB信号提供的时频同步信息的基础上可以获得更为精准的UWB信号的时频同步信息。
如S320中所示，接收设备的NB信号处理模块将获得的NB信号的时频同步信息提供给接收设备的UWB信号处理模块。在此基础上，接收设备的UWB信号处理模块根据NB信号处理模块提供的NB信号的时频同步信息从而获得更精准的UWB信号的时频同步信息。
可见，本申请提出了一个“两步走的UWB信号的时频同步”方案：
第一步：发送设备先发送NB信号，接收设备可以获得初始的时频同步信息；
第二步：发送设备在NB信号之后，再发送UWB信号。
可选地，NB信号的时频同步信息可以包括时间的同步信息和频率的同步信息。
具体而言，接收设备接收到的NB信号的PPDU包括至少一个导频符号，且这至少一个导频符号用于接收设备获取NB信号的更为准确的时频同步信息，例如，通过增加导频符号，公式(2)中Tmax的值更大，所以CFO估计的精度会更高，并基于获得的NB信号的时频同步信息获取UWB信号的时频同步信息。其中，关于包括至少一个导频符号的PPDU的结构可以参看图4。
可选地，本申请对于NB信号的具体形式不作任何限定。例如，对NB信号的频点、带宽、帧格式以及调制方式等均不作限定。示例性地，NB信号可以为zigbee/蓝牙信号、在2.4GHz的工业科学医疗(industrial scientific medical，ISM)频段中的频点、使用1MHz或2MHz的带宽或者采用O-QPSK的调制方式等。
通过在NB信号的PPDU中***至少一个导频符号，并基于***的导频符号和PPDU中原有的前导码进行CFO的估计，从而支持在数据接收过程中进行CFO的估计和补偿，且CFO的估计精度更高，进而可以实现UWB信号在发送设备与接收设备之间的高精度的时频同步。
下文将结合附图描述包括至少一个导频符号的PPDU的结构以及相关的仿真结果示意图。
图4是本申请实施例的PPDU400的结构示意图。如图4所示，PPDU400的PSDU包括至少一个导频符号。示例性地，至少一个导频符号可以周期性或者非周期性地分布在PSDU之间。
一个可能的实现方式，导频符号的数量与PSDU的字节数量关联。具体可以参看表2。
表2

表2中，PSDU的字节数量≥95时，导频符号的数量可以为4个。PSDU的字节数量在62～95之间时，导频符号的数量可以为3个。PSDU的字节数量在31～62之间时，导频符号的数量可以为2个。PSDU的字节数量小于31时，导频符号的数量可以为1个。应理解，表2所示的内容仅作为示例性理解。
一个可能的实现方式，导频符号周期性地分布在PSDU之内。其中，导频符号的位置是由初始偏移和间隔周期确定。初始偏移是指第一个导频符号与PSDU的起始位置之间的符号数量。
可选地，导频符号的间隔周期是固定的，即将导频符号周期性地***到PSDU中。
具体而言，窄带信号的PPDU中的PDSU的字节数量是可变的，通过在窄带信号的PPDU中的PSDU中嵌入至少一个用于接收设备获取窄带信号的时频同步信息的导频符号，如此，就可以在不过多更改PPDU的结构的基础上实现在数据接收过程中进行载波频偏的估计和补偿，且载波频率偏移的估计精度更高，进而实现UWB信号在发送设备与接收设备之间的高精度的时频同步。
一个可能的实现方式中，每个导频符号包括M位比特，其中，M为4的整数倍数，例如，M＝4、8、12…。
一个可能的实现方式中，每个导频符号包括M位比特。其中，M位比特可以全为比特0，也可以全为比特1，或者，同时包括比特0和比特1，本申请实施例不做限定。
可选地，构成导频符号的比特在一个PPDU的数据包内可以保持不变。
图5是基于PPDU400的CFO的仿真结果示意图。如图5所示，在加性高斯白噪声(additive white gaussian noise，AWGN)信道下，PPDU400中包括导频符号在内的PSDU的字节数量为127个，且每个导频符号由4位比特0构成。图5的横坐标表示每个码片与背景噪声的功率比(单位为分贝(dB))，纵坐标表示接收端的误比特率。图5展示了基于前导码的CFO估计以及基于前导码以及***的不同数量的导频符号的CFO估计的仿真结果。具体可以参看图5。
具体地，图5中不同的曲线分别展示了基于不同的CFO估计方法的译码结果。其中，图5中的“*”实线曲线表示了基于前导码的CFO估计方法的译码结果；“+”实线曲线表示了基于前导码与4个导频符号(每个导频符号由4位全0比特构成)的CFO估计方法的译码结果；“+”虚线曲线表示了基于前导码与4个导频符号(每个导频符号由8位全0比特构成)的CFO估计方法的译码结果；“△”实线曲线表示了基于前导码与6个导频符号(每个导频符号由4位全0比特构成)的CFO估计方法的译码结果；“△”虚线曲线表示了基于前导码与6个导频符号(每个导频符号由8位全0比特构成)的CFO估计方法的译码结果；“□”实线曲线表示了基于前导码与4个导频符号(每个导频符号由4位全0比特构成)的CFO估计方法的译码结果；“□”虚线曲线表示了基于前导码与6个导频符号(每个导频符号由8位全0比特构成)的CFO估计方法的译码结果；“☆”实线曲线表示了基于前导码与8个导频符号的CFO估计方法的译码结果；“☆”虚线曲 线表示了基于前导码与10个导频符号(每个导频符号由4位全0比特构成)的CFO估计方法的译码结果。
由不同曲线之间的对比可知，基于前导码的CFO估计方法的译码结果与基于前导码和4个导频符号的CFO估计，以及基于前导码和4个导频符号的CFO估计以及基于前导码和6个导频符号的CFO估计等，在相同误比特率的情况下，例如，10-3时，基于***的多个导频符号与前导码的CFO估计的仿真结果对应更低的码片与背景噪声功率比，则可以说明采用基于***的多个导频符号与前导码的CFO估计的性能更好，准确度更高，从而验证了通过在NB信号的PPDU中***至少一个导频符号，并基于***的导频符号和PPDU中原有的前导码进行CFO的估计，可以支持在数据接收过程中进行CFO的估计和补偿，这可以提高CFO的估计精度，进而可以实现UWB信号在发送设备与接收设备之间的高精度的时频同步。
一个可能的实现方式，导频符号的数量为4或6个。其中，每个导频符号包括4位全0比特。如此，可以实现时频同步性能与资源开销之间的平衡。
下文将结合附图对本申请实施例的通信装置进行描述。
图6是发送设备/接收设备的内部结构的示意图。如图6所示，以接收设备为例，接收设备可以包括一个NB信号处理模块和UWB信号处理模块，其中，NB信号处理模块可以处理通过射频模块接收到的来自于发送设备的NB信号；UWB信号处理模块可以处理通过射频模块接收到的来自于发送设备的UWB信号。此外，NB信号处理模块和UWB信号处理模块可以交互数据和/或信息，例如，NB信号处理模块将通过处理接收到的来自于发送设备的NB信号获得的粗略的时频同步信息，发送给UWB信号处理模块。发送设备也是类似的，不再赘述。
图7是本申请实施例的通信装置700的示意性框图。如图7所示，通信装置700包括处理单元710和接收单元720。
可选地，通信装置700可以对应本申请实施例中的接收设备。
此时，通信装置700的各单元用于实现如下功能：
处理单元710，用于：
处理窄带信号，用于根据NB信号的时频同步信息获取UWB信号的时频同步信息；
接收单元720，用于接收NB信号与UWB信号。
可选地，在一个实施例中，接收单元720，用于根据NB信号的时频同步信息接收UWB信号；
以及，处理单元710，用于对UWB信号进行检测，获得UWB信号的时频同步信息。
在以上各实现方式中，接收单元720和发送单元730也可以集成为一个收发单元，同时具备接收和发送的功能，这里不作限定。
在通信装置700对应接收设备的各实施例中，处理单元710用于执行除了发送和接收的动作之外由接收设备内部实现的处理和/或操作。接收单元720用于执行接收设备的接收的动作，发送单元730用于执行接收设备的发送的动作。
可选地，通信装置700可以对应本申请实施例中的发送设备。可选地，通信装置700还包括发送单元730。
此时，通信装置700的各单元用于实现如下功能：
处理单元710，用于生成NB信号和UWB信号；
发送单元730，用于：
发送NB信号；
发送UWB信号。
在以上各实现方式中，接收单元720和发送单元730也可以集成为一个收发单元，同时具备接收和发送的功能，这里不作限定。
在通信装置700对应发送设备的各实施例中，处理单元710用于执行除了发送和接收的动作之外由发送设备内部实现的处理和/或操作。接收单元720用于执行发送设备的接收的动作，发送单元730用于执行发送设备的发送的动作。
图8是本申请实施例的通信装置800的示意性结构图。如图8所示，通信装置800包括：一个或多个处理器810，一个或多个存储器820以及一个或多个通信接口830。处理器810用于控制通信接口830收发信号，存储器820用于存储计算机程序，处理器810用于从存储820中调用并运行该计算机程序，以使得通信装置800执行本申请各方法实施例中由接收设备或发送设备执行的处理。
例如，处理器810可以具有图7中所示的处理单元710的功能，通信接口830可以具有图7中所示的接收单元720和/或发送单元730的功能。具体地，处理器810可以用于执行由通信装置内部执行的处理或操作，通信接口830用于执行通信装置的发送和/或接收的操作。
可选地，在一种实现方式中，通信装置800可以为方法实施例中的接收设备。在这种实现方式中，通信接口830可以为接收设备的收发器。收发器可以包括接收器和/或发射器。可选地，处理器810可以为接收设备的基带装置，通信接口830可以为射频装置。
在另一种实现中，通信装置800可以为安装在接收设备中的芯片(或芯片***)。在这种实现方式中，通信接口830可以为接口电路或者输入/输出接口。
可选地，在一种实现方式中，通信装置800可以为方法实施例中的发送设备。在这种实现方式中，通信接口830可以为发送设备的收发器。收发器可以包括接收器和/或发射器。可选地，处理器810可以为发送设备的基带装置，通信接口830可以为射频装置。
在另一种实现中，通信装置800可以为安装在发送设备中的芯片(或芯片***)。在这种实现方式中，通信接口830可以为接口电路或者输入/输出接口。
其中，图8中器件(例如，处理器、存储器或通信接口)后面的虚线框表示该器件可以为一个以上。
此外，本申请还提供一种计算机可读存储介质，所述计算机可读存储介质中存储有计算机指令，当计算机指令在计算机上运行时，使得本申请各方法实施例中由接收设备执行的操作和/或处理被执行。
本申请还提供一种计算机可读存储介质，所述计算机可读存储介质中存储有计算机指令，当计算机指令在计算机上运行时，使得本申请各方法实施例中由发送设备执行的操作和/或处理被执行。
本申请还提供一种计算机程序产品，计算机程序产品包括计算机程序代码或指令，当计算机程序代码或指令在计算机上运行时，使得本申请各方法实施例中由接收设备执行的 操作和/或处理被执行。
本申请还提供一种计算机程序产品，计算机程序产品包括计算机程序代码或指令，当计算机程序代码或指令在计算机上运行时，使得本申请各方法实施例中由发送设备执行的操作和/或处理被执行。
本申请还提供一种芯片，所述芯片包括处理器，用于存储计算机程序的存储器独立于芯片而设置，处理器用于执行存储器中存储的计算机程序，使得安装有所述芯片的通信装置执行任意一个方法实施例中由接收设备执行的操作和/或处理。
本申请还提供一种芯片，所述芯片包括处理器，用于存储计算机程序的存储器独立于芯片而设置，处理器用于执行存储器中存储的计算机程序，使得安装有所述芯片的通信装置执行任意一个方法实施例中由发送设备执行的操作和/或处理。
进一步地，所述芯片还可以包括通信接口。所述通信接口可以是输入/输出接口，也可以为接口电路等。进一步地，所述芯片还可以包括所述存储器。
可选地，上述处理器可以为一个或多个，所述存储器可以为一个或多个，所述存储器可以为一个或多个。
本申请还提供一种通信装置(例如，可以为芯片或芯片***)，包括处理器和通信接口，所述通信接口用于接收(或称为输入)数据和/或信息，并将接收到的数据和/或信息传输至所述处理器，所述处理器处理所述数据和/或信息，以及，通信接口还用于输出(或称为输出)经处理器处理之后的数据和/或信息，以使得任意一个方法实施例中由接收设备执行的操作和/或处理被执行。
本申请还提供一种通信装置(例如，可以为芯片或芯片***)，包括处理器和通信接口，所述通信接口用于接收(或称为输入)数据和/或信息，并将接收到的数据和/或信息传输至所述处理器，所述处理器处理所述数据和/或信息，以及，通信接口还用于输出(或称为输出)经处理器处理之后的数据和/或信息，以使得任意一个方法实施例中由发送设备执行的操作和/或处理被执行。
本申请还提供一种通信装置，包括至少一个处理器，所述至少一个处理器与至少一个存储器耦合，所述至少一个处理器用于执行所述至少一个存储器中存储的计算机程序或指令，使得所述通信装置执行任意一个方法实施例中由接收设备执行的操作和/或处理。
本申请还提供一种通信装置，包括至少一个处理器，所述至少一个处理器与至少一个存储器耦合，所述至少一个处理器用于执行所述至少一个存储器中存储的计算机程序或指令，使得所述通信装置执行任意一个方法实施例中由发送设备执行的操作和/或处理。
本申请还提供一种无线通信***，包括本申请方法实施例中的接收设备。可选地，还可以包括方法实施例中的发送设备。
本申请实施例中的处理器可以是集成电路芯片，具有处理信号的能力。在实现过程中，上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。处理器可以是通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application-specific integrated circuit，ASIC)、现场可编程门阵列(field programmable gate array，FPGA)或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。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。本申请实施例公开的方法的步骤可以直接体现为硬件编码处理器执行完成，或者用编码处 理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DRRAM)。应注意，本文描述的***和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
上述实施例所提供的方法，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可以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。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如，红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的***、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的***、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个***，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(read-only memory，ROM)、随机存取存储器(random access memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (20)

  1. 一种应用于超宽带***的信号同步的方法，其特征在于，包括：
    发送窄带信号，所述窄带信号的物理层协议数据单元PPDU包括至少一个导频符号，所述至少一个导频符号用于接收设备获取所述窄带信号的时频同步信息，所述至少一个导频符号为发送设备与所述接收设备约定的符号；
    发送超宽带信号；
    其中，所述窄带信号的时频同步信息用于所述接收设备获取所述超宽带信号的时频同步信息。
  2. 根据权利要求1所述的方法，其特征在于，所述PPDU的物理层服务数据单元PSDU包括所述至少一个导频符号。
  3. 根据权利要求1或2所述的方法，其特征在于，所述每个导频符号包括M位比特0，所述M为4的整数倍数。
  4. 根据权利要求1至3中任一项所述的方法，其特征在于，所述窄带信号与所述超宽带信号拥有共同的本地时钟。
  5. 一种应用于超宽带***的信号同步的方法，其特征在于，包括：
    接收窄带信号，所述窄带信号的物理层协议数据单元PPDU包括至少一个导频符号，所述至少一个导频符号用于接收设备获取所述窄带信号的时频同步信息，所述至少一个导频符号为发送设备与所述接收设备约定的符号；
    接收超宽带信号；
    根据所述窄带信号的时频同步信息获取所述超宽带信号的时频同步信息。
  6. 根据权利要求5所述的方法，其特征在于，所述PPDU的物理层服务数据单元PSDU包括所述至少一个导频符号。
  7. 根据权利要5或6所述的方法，其特征在于，所述每个导频符号包括M位比特0，所述M为4的整数倍数。
  8. 根据权利要求5至7中任一项所述的方法，其特征在于，所述窄带信号与所述超宽带信号拥有共同的本地时钟。
  9. 一种通信装置，其特征在于，包括：
    发送单元，用于发送窄带信号，所述窄带信号的物理层协议数据单元PPDU包括至少一个导频符号，所述至少一个导频符号用于接收设备获取所述窄带信号的时频同步信息，所述至少一个导频符号为所述通信装置与所述接收设备约定的符号；
    所述发送单元，还用于发送超宽带信号；
    其中，所述窄带信号的时频同步信息用于所述接收设备获取所述超宽带信号的时频同步信息。
  10. 根据权利要求9所述的装置，其特征在于，所述PPDU的物理层服务数据单元PSDU包括所述至少一个导频符号。
  11. 根据权利要求9或10所述的装置，其特征在于，所述每个导频符号包括M位比特0，所述M为4的整数倍数。
  12. 根据权利要求9至11中任一项所述的装置，其特征在于，所述窄带信号与所述超宽带信号拥有共同的本地时钟。
  13. 一种通信装置，其特征在于，包括：
    接收单元，用于接收窄带信号，所述窄带信号的物理层协议数据单元PPDU包括至少一个导频符号，所述至少一个导频符号用于所述通信装置获取所述窄带信号的时频同步信息，所述至少一个导频符号为发送设备与所述通信装置约定的符号；
    所述接收单元，还用于接收超宽带信号；
    处理单元，用于根据所述窄带信号的时频同步信息获取所述超宽带信号的时频同步信息。
  14. 根据权利要求13所述的装置，其特征在于，所述PPDU的物理层服务数据单元PSDU包括所述至少一个导频符号。
  15. 根据权利要求13或14所述的装置，其特征在于，所述每个导频符号包括M位比特0，所述M为4的整数倍数。
  16. 根据权利要求13至15中任一项所述的装置，其特征在于，所述窄带信号与所述超宽带信号拥有共同的本地时钟。
  17. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质中存储有计算机指令，当计算机指令在计算机上运行时，使得权利要求1至8中任一项所述的方法被执行。
  18. 一种计算机程序产品，其特征在于，所述计算机程序产品包括计算机程序代码，当所述计算机程序代码在计算机上运行时，使得权利要求1至8中任一项所述的方法被执行。
  19. 一种无线通信***，其特征在于，所述无线通信***包括权利要求9至12中任一项所述的通信装置，以及，权利要求13至16中任一项所述的通信装置。
  20. 一种芯片***，其特征在于，包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有所述芯片***的通信设备执行权利要求1至8中任一项所述的方法。
PCT/CN2023/100151 2022-06-21 2023-06-14 一种应用于超宽带***的信号同步的方法和通信装置 WO2023246579A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210703945.4A CN117318754A (zh) 2022-06-21 2022-06-21 一种应用于超宽带***的信号同步的方法和通信装置
CN202210703945.4 2022-06-21

Publications (1)

Publication Number Publication Date
WO2023246579A1 true WO2023246579A1 (zh) 2023-12-28

Family

ID=89279855

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2023/100151 WO2023246579A1 (zh) 2022-06-21 2023-06-14 一种应用于超宽带***的信号同步的方法和通信装置

Country Status (2)

Country Link
CN (1) CN117318754A (zh)
WO (1) WO2023246579A1 (zh)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102255631A (zh) * 2011-07-06 2011-11-23 中国人民解放军信息工程大学 基于时频转换和滑动相关的超宽带通信方法
CN110086584A (zh) * 2018-01-26 2019-08-02 北京松果电子有限公司 信号发送的方法和装置、存储介质和电子设备
CN113206723A (zh) * 2020-01-31 2021-08-03 苹果公司 下一代超宽带帧格式
US20220141657A1 (en) * 2020-11-02 2022-05-05 Apple Inc. Signaling techniques using fragmented and multi-partitioned uwb packets

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102255631A (zh) * 2011-07-06 2011-11-23 中国人民解放军信息工程大学 基于时频转换和滑动相关的超宽带通信方法
CN110086584A (zh) * 2018-01-26 2019-08-02 北京松果电子有限公司 信号发送的方法和装置、存储介质和电子设备
CN113206723A (zh) * 2020-01-31 2021-08-03 苹果公司 下一代超宽带帧格式
US20220141657A1 (en) * 2020-11-02 2022-05-05 Apple Inc. Signaling techniques using fragmented and multi-partitioned uwb packets

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ANONYMOUS: "Channel Access using Clear Channel Assessment (CCA), useful tool for efficient UWB communication", PROJECT: IEEE P802.15 WORKING GROUP FOR WIRELESS PERSONAL AREA NETWORKS (WPANS), DOC.: 15-21-0412-00-04AB, 20 July 2021 (2021-07-20), pages 1 - 12, XP093121322 *

Also Published As

Publication number Publication date
CN117318754A (zh) 2023-12-29

Similar Documents

Publication Publication Date Title
JP6968931B2 (ja) Ｗｂ ｓｃ、アグリゲートｓｃ、重複ｓｃ、ｏｆｄｍ送信フレーム中でデータペイロードを送信するためのシステムおよび方法
US11012179B2 (en) Apparatus, system and method of communicating a wireless transmission according to a physical layer scheme
US20160352553A1 (en) Data transmission method and apparatus
WO2020187132A1 (zh) 数据信道的传输方法及装置
US10575267B2 (en) System and method for providing weighted pattern demapper for Bluetooth® low energy long range
WO2023246579A1 (zh) 一种应用于超宽带***的信号同步的方法和通信装置
WO2018137667A1 (zh) 传输数据的方法和装置以及传输信息的方法和装置
JP5035892B2 (ja) 無線端末、データ送信方法
WO2022228117A1 (zh) 一种确定ptrs图案的方法和装置
WO2023179639A1 (zh) 超宽带信号同步的方法和通信装置
WO2023061311A1 (zh) 一种传输物理层协议数据单元的方法和装置
WO2024036949A1 (zh) 信号处理方法及装置
WO2023160314A1 (zh) 传输物理层协议数据单元的方法和装置
WO2023165454A1 (zh) 通信方法和装置
WO2024012259A1 (zh) 通信方法及装置
WO2023061011A1 (zh) 一种测距方法和装置
WO2023179430A1 (zh) 通信方法、装置和***
CN116846427A (zh) 超宽带信号同步的方法和通信装置
WO2023179585A1 (zh) 时钟同步的方法和装置
WO2023207593A1 (zh) 应用于超带宽uwb***感知测量的方法和装置
WO2024051318A1 (zh) 通信方法及装置
WO2023236721A1 (zh) 传输信令的方法和装置
WO2023185637A1 (zh) 安全测距的方法和通信装置
WO2022205379A1 (zh) 一种联合信道估计触发方法及装置
WO2023198098A1 (zh) 传输信令的方法和装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23826228

Country of ref document: EP

Kind code of ref document: A1