WO2023236805A1 - 信息交互方法及相关装置 - Google Patents

信息交互方法及相关装置 Download PDF

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Publication number
WO2023236805A1
WO2023236805A1 PCT/CN2023/096929 CN2023096929W WO2023236805A1 WO 2023236805 A1 WO2023236805 A1 WO 2023236805A1 CN 2023096929 W CN2023096929 W CN 2023096929W WO 2023236805 A1 WO2023236805 A1 WO 2023236805A1
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WIPO (PCT)
Prior art keywords
sequence
configuration information
communication device
devices
ppdu
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PCT/CN2023/096929
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English (en)
French (fr)
Inventor
钱彬
周正春
刘辰辰
杨洋
杨讯
唐小虎
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华为技术有限公司
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Publication of WO2023236805A1 publication Critical patent/WO2023236805A1/zh

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Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition

Definitions

  • the present application relates to the field of communication technology, and in particular, to an information interaction method and related devices.
  • Ultra-wideband (UWB) technology is a wireless carrier communication technology that can transmit data using nanosecond-level non-sinusoidal narrow pulses, so it occupies a wide spectrum range. Due to its relatively narrow pulse and low radiation spectrum density, UWB has the advantages of strong multipath resolution, low power consumption, and strong confidentiality. It is mainly used in sensing and ranging scenarios.
  • the preamble sequence in 802.15.4a and 802.15.4z is a ternary sequence (also called Ipatov sequence) composed of three elements ⁇ -1,0,1 ⁇ . Its length is 31, 91 or 127, with different lengths.
  • Ipatov sequence also called Ipatov sequence
  • Embodiments of the present application provide an information interaction method and related devices, which can improve the anti-interference performance of the UWB system.
  • this application provides an information interaction method, which is applied in a UWB system.
  • the method includes: a communication device generates configuration information and sends the configuration information in the form of broadcast; the configuration information includes device addresses of one or more devices. , the configuration information also includes sequence configuration information.
  • the sequence configuration information includes the number of cyclic shifts corresponding to each device. The number of cyclic shifts is used to cyclically shift the sequence in the sequence set. Any one in the sequence set The amplitude of the periodic autocorrelation side lobe of the sequence is 0, and the number of cyclic shift bits corresponding to the devices used to complete different services among the one or more devices is different.
  • the sequence configuration information is used to determine the preamble sequence. It can be understood that the periodic autocorrelation side lobe amplitude of any sequence in the above sequence set is 0, and the periodic autocorrelation main lobe amplitude is not 0. For example, any sequence in the sequence set may be a complete sequence.
  • the above communication device may be a coordinator in the UWB system.
  • the coordinator of this application configures different cyclic shift numbers for the equipment used to complete different services.
  • the cyclic shift number is used to cyclically shift the sequences in the sequence set. Any sequence in the sequence set periodic autocorrelation of The side lobe amplitude is 0; this makes the interference caused by cross-correlated side lobes between at least some communication devices smaller, thereby improving the anti-interference capability of the UWB system.
  • the present application provides an information interaction method, applied in a UWB system.
  • the method includes: the communication device receives configuration information, the configuration information includes device addresses of one or more devices, and the configuration information includes one or more device addresses. The device address of the device.
  • the configuration information also includes sequence configuration information.
  • the sequence configuration information includes the number of cyclic shifts corresponding to each device. The number of cyclic shifts is used to cyclically shift the sequence in the sequence set.
  • the above communication device may be any communication device in the UWB system except the coordinator.
  • the method further includes: the communication device sends a PPDU, the PPDU includes a preamble sequence, the The preamble sequence is obtained by cyclically shifting the target sequence in the sequence set, and the number of cyclic shifts is equal to the number of cyclic shifts corresponding to the communication device.
  • the number of cyclic shifts corresponding to the devices used to jointly complete a service among the one or more devices mentioned above is the same.
  • the number of cyclic shifts corresponding to M device groups is: 0, Z, 2Z, 3Z,..., (M-1) ⁇ Z;
  • the above sequence configuration information also includes a sequence length corresponding to each device, and the sequence length is used to determine the sequence used for cyclic shift in the sequence set. For example, there is only one sequence of the same length in the sequence set, so a sequence can be uniquely determined by the sequence length.
  • embodiments of the present application provide a communication device configured to perform the method in the first aspect or any possible implementation of the first aspect.
  • the communication device includes means for performing a method in the first aspect or in any possible implementation of the first aspect.
  • embodiments of the present application provide a communication device configured to perform the method in the second aspect or any possible implementation of the second aspect.
  • the communication device includes means for performing the method of the second aspect or any possible implementation of the second aspect.
  • the above-mentioned communication device may include a transceiver unit and a processing unit.
  • a transceiver unit and a processing unit For specific descriptions of the transceiver unit and the processing unit, reference may also be made to the device embodiments shown below.
  • the beneficial effects of the above third to fourth aspects reference can be made to the relevant descriptions of the foregoing first and second aspects, and will not be described again here.
  • the communication device of this application determines a sequence from the sequence set, performs cyclic shifting on this sequence and generates a preamble sequence. Because the periodic autocorrelation side lobe amplitude of this sequence is 0, the autocorrelation characteristics of the preamble sequence are effectively guaranteed, so that The UWB system has good synchronization performance; in addition, there may be a zero cross-correlation area between preamble sequences generated by different cyclic shifts, causing cross-correlation between multiple communication devices using different cyclic shift bits. The interference caused by the lobes is smaller, thereby improving the anti-interference ability of the UWB system.
  • the target sequence and the number of cyclic shifts can be configured by the coordinator. Then, before the communication device generates the PPDU, the method further includes: the communication device receives configuration information, the configuration information includes the device address of the communication device, the configuration information also includes sequence configuration information, and the sequence configuration information includes one or more of the following: The number of cyclic shift bits corresponding to the communication device, the sequence length corresponding to the communication device, and the sequence identifier corresponding to the communication device. The number of cyclic shifts is used to cyclically shift the target sequence in the sequence set, the sequence length is used to determine the target sequence in the sequence set, and the sequence identifier is used to identify the target sequence in the sequence set.
  • the present application provides a UWB-based PPDU transmission method.
  • the method includes: a communication device receives a PPDU and processes the PPDU.
  • the PPDU includes a preamble sequence.
  • the preamble sequence is a target sequence in the sequence set after a cycle. After shifting, the periodic autocorrelation side lobe amplitude of any sequence in the sequence set is 0.
  • the target sequence and the number of cyclic shifts can be determined by negotiation between the sending and receiving parties.
  • the above-mentioned preamble sequence is obtained by cyclically shifting the target sequence in the above-mentioned sequence set, or the above-mentioned preamble sequence is obtained by cyclically shifting the target sequence in the above-mentioned sequence set. Obtained after shifting and repeating one or more times.
  • embodiments of the present application provide a communication device configured to perform the method in the sixth aspect or any possible implementation of the sixth aspect.
  • the communication device includes a unit having a method for performing the sixth aspect or any possible implementation of the sixth aspect.
  • the above-mentioned communication device may include a transceiver unit and a processing unit.
  • a transceiver unit and a processing unit For specific descriptions of the transceiver unit and the processing unit, reference may also be made to the device embodiments shown below.
  • the beneficial effects of the above seventh to eighth aspects reference can be made to the relevant descriptions of the foregoing fifth and sixth aspects, and will not be described again here.
  • the present application provides an information interaction method applied in a UWB system.
  • the method includes: the communication device generates configuration information and sends the configuration information in the form of broadcast; the configuration information includes the device address of one or more devices.
  • the configuration information also includes sequence configuration information.
  • the sequence configuration information includes the sampling interval corresponding to each device. A sampling interval is used to sample a sequence in the sequence set after repeating the sampling interval times. The sampling interval is the same as the sampling interval.
  • the length of a sequence is relatively prime.
  • the periodic autocorrelation side lobe amplitude of any sequence in the sequence set is 0, and the sampling intervals corresponding to the devices used to complete different services in the one or more devices are different.
  • any sequence in the sequence set may be a complete sequence.
  • the above communication device may be a coordinator in the UWB system.
  • the preamble sequence of this application is still a complete sequence, which effectively ensures the autocorrelation characteristics of the preamble sequence and enables the UWB system to have better synchronization performance .
  • the preamble sequence used for sensing can be received and processed by any device.
  • the channel impulse response channel impulse response, CIR
  • non- Authorized users can also detect the existence of a target and its specific location, and then analyze the target's habits and steal user privacy.
  • the coordinator configures the sampling interval (the configuration information can be encrypted to prevent unauthorized users from learning), and uses the configured sampling interval to sample the complete sequence to generate a preamble sequence, which can prevent unauthorized users from measuring CIR, thereby improving Security during UWB sensing. This is because even if the unauthorized user knows the complete sequence, the unauthorized user cannot know the sampling interval. Then the unauthorized user listens to the preamble and cannot obtain the main lobe by correlating the preamble with the known complete sequence, that is, it cannot be measured. to CIR.
  • the present application provides an information interaction method applied in a UWB system.
  • the method includes: the communication device receives configuration information, the configuration information includes device addresses of one or more devices, and the configuration information also includes sequence configuration information.
  • the sequence configuration information includes the sampling interval corresponding to each device; the communication device then determines the sampling interval corresponding to the communication device based on the configuration information.
  • a sampling interval is used to sample a sequence in the sequence set after repeating the sampling interval times, and the sampling interval is relatively prime to the length of the sequence.
  • the periodic autocorrelation side lobe amplitude of any sequence in the sequence set is 0, and the sampling intervals corresponding to the devices used to complete different services in the one or more devices are different.
  • any sequence in the sequence set may be a complete sequence.
  • the above-mentioned communication device can be any communication device in the UWB system except the coordinator (coordinator).
  • the method further includes: the communication device sends a PPDU, the PPDU includes a preamble sequence, and the preamble sequence
  • the first sequence is obtained by extracting one bit every element of the first sampling interval.
  • the first sequence is obtained by repeating the first sampling interval times of the second sequence in the above sequence set.
  • the first sampling interval is corresponding to the communication device. Sampling interval, the first sampling interval is relatively prime to the length of the second sequence.
  • This application generates a preamble sequence by sampling a complete sequence, which makes it impossible for unauthorized users to measure CIR, thereby improving security in the UWB sensing process.
  • the sampling intervals corresponding to the devices used to jointly complete a service among the one or more devices mentioned above are the same.
  • the above sequence configuration information also includes a sequence length corresponding to each device, and the sequence length is used to determine the sequence used for sampling in the above sequence set.
  • Exemplary sequence set There is only one sequence of the same length in , so a sequence can be uniquely determined by the sequence length.
  • the above sequence configuration information also includes a sequence identifier corresponding to each device, and the sequence identifier is used to identify the sequence in the sequence set.
  • the sampling interval corresponding to a device is relatively prime to the length of the sequence identified by the sequence identifier corresponding to the device.
  • sequence identifiers corresponding to the devices used to jointly complete a service among the one or more devices mentioned above are the same, and the sequence identifiers corresponding to the devices used to complete different services among the one or more devices mentioned above are different.
  • an embodiment of the present application provides a communication device, which is used to perform the method in the ninth aspect or any possible implementation of the ninth aspect.
  • the communication device includes a unit having a method for performing the ninth aspect or any possible implementation of the ninth aspect.
  • embodiments of the present application provide a communication device, which is used to perform the method in the tenth aspect or any possible implementation of the tenth aspect.
  • the communication device includes a unit having a method for performing the tenth aspect or any possible implementation of the tenth aspect.
  • the above-mentioned communication device may include a transceiver unit and a processing unit.
  • a transceiver unit and a processing unit For specific descriptions of the transceiver unit and the processing unit, reference may also be made to the device embodiments shown below.
  • the beneficial effects of the above eleventh to twelfth aspects reference can be made to the relevant descriptions of the foregoing ninth and tenth aspects, and will not be described again here.
  • the present application provides a UWB-based PPDU transmission method.
  • the method includes: the communication device generates and sends a PPDU.
  • the PPDU includes a preamble sequence.
  • the preamble sequence is generated based on the second sequence in the sequence set and the sampling interval. , the sampling interval is relatively prime to the length of the second sequence, and the periodic autocorrelation side lobe amplitude of any sequence in the sequence set is 0.
  • any sequence in the sequence set may be a complete sequence.
  • the communication device of this application determines a complete sequence from the sequence set, and samples this complete sequence to generate a preamble sequence. Because the complete sequence is still a complete sequence after sampling, it effectively ensures the autocorrelation characteristics of the preamble sequence, making the UWB system more efficient. Good synchronization performance.
  • this application negotiates the sampling interval between the sending and receiving parties (the negotiation process can be encrypted to prevent unauthorized users from learning), and uses the negotiated sampling interval to sample the complete sequence to generate the preamble sequence. It can also use Unauthorized users cannot measure CIR, thereby improving security in the UWB sensing process. This is because even if the unauthorized user knows the complete sequence, the unauthorized user cannot know the sampling interval. Then the unauthorized user listens to the preamble and cannot obtain the main lobe by using the preamble to perform autocorrelation with the known complete sequence, that is, it is impossible to obtain the main lobe. CIR is measured.
  • the method before the communication device generates the PPDU, the method further includes: the communication device receives configuration information, the configuration information includes the device address of the communication device, and the configuration information also includes the sequence configuration Information, the sequence configuration information includes one or more of the following: the sampling interval corresponding to the communication device, the sequence length corresponding to the communication device, and the sequence identifier corresponding to the communication device.
  • the sampling interval is used to sample the second sequence in the sequence set after repeating the sampling interval times.
  • the sequence length is used to determine the second sequence in the sequence set for sampling.
  • the sequence identifier is used to identify the second sequence in the sequence set. Second sequence.
  • this application provides a UWB-based PPDU transmission method.
  • the method includes: the communication device receives a PPDU, the PPDU includes a preamble sequence, the preamble sequence is generated based on the second sequence in the sequence set and the sampling interval, the The sampling interval is relatively prime with the length of the second sequence, and the periodic autocorrelation side lobe amplitude of any sequence in the sequence set is 0; the communication device processes the PPDU.
  • any sequence in the sequence set can be a complete sequence.
  • the above preamble sequence is obtained by extracting one bit every element of the sampling interval from the first sequence, and the first sequence is the sequence set.
  • the second sequence is obtained after repeating the sampling interval times.
  • embodiments of the present application provide a communication device, which is used to perform the method in the thirteenth aspect or any possible implementation of the thirteenth aspect.
  • the communication device includes a unit having a method for performing the thirteenth aspect or any possible implementation of the thirteenth aspect.
  • an embodiment of the present application provides a communication device, which is used to perform the method in the fourteenth aspect or any possible implementation of the fourteenth aspect.
  • the communication device includes a unit having a method for performing the fourteenth aspect or any possible implementation of the fourteenth aspect.
  • the above-mentioned communication device may include a transceiver unit and a processing unit.
  • a transceiver unit and a processing unit For specific descriptions of the transceiver unit and the processing unit, reference may also be made to the device embodiments shown below.
  • the beneficial effects of the fifteenth to sixteenth aspects mentioned above reference can be made to the relevant descriptions of the thirteenth and fourteenth aspects mentioned above, and will not be described again here.
  • the present application provides a communication device.
  • the communication device includes a processor for executing the method shown in the above-mentioned first aspect, the above-mentioned ninth aspect, or any possible implementation manner of any one of the aspects.
  • the processor is configured to execute a program stored in the memory. When the program is executed, the method shown in the above-mentioned first aspect, the above-mentioned ninth aspect, or any possible implementation of any one of the aspects is executed.
  • the communication device further includes a transceiver, and the transceiver is used to send information.
  • the memory is located outside the above-mentioned communication device.
  • the memory is located within the above-mentioned communication device.
  • the present application provides a communication device, which includes a processor configured to execute the method shown in the fifth aspect, the thirteenth aspect, or any possible implementation of any one of the aspects.
  • the processor is configured to execute a program stored in the memory. When the program is executed, the method shown in the above-mentioned fifth aspect, the above-mentioned thirteenth aspect, or any possible implementation manner of any one of the aspects is executed.
  • the memory is located outside the above-mentioned communication device.
  • a logic circuit is used to generate configuration information.
  • the configuration information includes device addresses of one or more devices.
  • the configuration information also includes sequence configuration information.
  • the sequence configuration information includes a cyclic shift bit corresponding to each device. The number of cyclic shifts is used to cyclically shift the sequences in the sequence set. The periodic autocorrelation side lobe amplitude of any sequence in the sequence set is 0.
  • the one or more devices used to complete different services The number of cyclic shift bits corresponding to the devices is different; the interface is used to output the configuration information.
  • a logic circuit is used to generate a PPDU.
  • the PPDU contains a preamble sequence.
  • the preamble sequence is generated by cyclically shifting the target sequence in the sequence set.
  • the periodic autocorrelation side lobes of any sequence in the sequence set The amplitude is 0; the interface is used to output the PPDU.
  • embodiments of the present application provide a computer-readable storage medium.
  • the computer-readable storage medium is used to store a computer program. When it is run on a computer, the above-mentioned first aspect, the above-mentioned ninth aspect, or any possible implementation of either aspect in which the method shown is performed.
  • embodiments of the present application provide a computer-readable storage medium.
  • the computer-readable storage medium is used to store a computer program. When it is run on a computer, the above-mentioned second aspect, the above-mentioned tenth aspect, or any possible implementation of either aspect in which the method shown is performed.
  • embodiments of the present application provide a computer-readable storage medium.
  • the computer-readable storage medium is used to store a computer program. When it is run on a computer, the above-mentioned fifth aspect and the above-mentioned thirteenth aspect are achieved. , or the method shown in any possible implementation of either aspect is executed.
  • embodiments of the present application provide a computer program product.
  • the computer program product includes a computer program or computer code.
  • the computer program product When run on a computer, the computer program product enables the above-mentioned first aspect, the above-mentioned ninth aspect, or any of the above-mentioned aspects. Any possible implementation of the method shown in one aspect is performed.
  • inventions of the present application provide a computer program product.
  • the computer program product includes a computer program or computer code.
  • the computer program product When run on a computer, the computer program product enables the above-mentioned fifth aspect, the above-mentioned thirteenth aspect, or the above-mentioned aspect. Any possible implementation of either aspect of the method shown is performed.
  • inventions of the present application provide a computer program product.
  • the computer program product includes a computer program or computer code.
  • the computer program product When run on a computer, the computer program product causes the above-mentioned sixth aspect, the above-mentioned fourteenth aspect, or wherein Any possible implementation of either aspect of the method shown is performed.
  • embodiments of the present application provide a computer program.
  • the computer program When the computer program is run on a computer, the method shown in the above-mentioned first aspect, the above-mentioned ninth aspect, or any possible implementation of any one of the aspects be executed.
  • embodiments of the present application provide a computer program.
  • the computer program When the computer program is run on a computer, the method shown in the above-mentioned second aspect, the above-mentioned tenth aspect, or any possible implementation of any one of the aspects be executed.
  • embodiments of the present application provide a computer program.
  • the computer program When the computer program is run on a computer, the above-mentioned fifth aspect, the above-mentioned thirteenth aspect, or any possible implementation of any one of the above aspects.
  • the method is executed.
  • embodiments of the present application provide a computer program.
  • the computer program When the computer program is run on a computer, the above-mentioned sixth aspect, the above-mentioned fourteenth aspect, or any possible implementation of any one of the above aspects.
  • the method is executed.
  • inventions of the present application provide a wireless communication system.
  • the wireless communication system includes: a method for performing the above-mentioned first aspect, the above-mentioned ninth aspect, or any possible implementation manner of any one of the aspects.
  • inventions of the present application provide a wireless communication system.
  • the wireless communication system includes: for performing the above-mentioned fifth aspect, the above-mentioned thirteenth aspect, or any possible implementation manner of any one of them.
  • Figure 1 is a schematic structural diagram of a wireless communication system provided by an embodiment of the present application.
  • Figure 2 is another structural schematic diagram of a wireless communication system provided by an embodiment of the present application.
  • Figure 3 is a schematic diagram of the frame structure of PPDU provided by the embodiment of the present application.
  • Figure 4 is a schematic diagram of the symbol structure contained in the SYNC field provided by the embodiment of the present application.
  • Figure 5 is a schematic diagram of the autocorrelation simulation results of an Ipatov sequence provided by the embodiment of the present application.
  • Figure 6 is a schematic diagram of the cross-correlation simulation results of two different Ipatov sequences provided by the embodiment of the present application.
  • FIG. 7 is a schematic diagram of UWB signal segmented transmission provided by an embodiment of the present application.
  • Figure 10a is a schematic diagram of the preamble sequence of two device groups provided by the embodiment of the present application.
  • Figure 11 is a schematic diagram of the zero cross-correlation area provided by the embodiment of the present application.
  • Figure 12 is a schematic flow chart of the UWB-based PPDU transmission method provided by the embodiment of the present application.
  • Figure 15 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • Figure 16 is a schematic structural diagram of a communication device 1000 provided by an embodiment of the present application.
  • At least one (item) means one or more
  • plural means two or more
  • at least two (items) means two or three and Three or more.
  • “and/or” is used to describe the association of associated objects, indicating that there can be three kinds of relationships.
  • a and/or B can mean: only A exists, only B exists, and A and B exist simultaneously. situation, where A and B can be singular or plural.
  • the character “/” generally indicates that the related objects are in an “or” relationship.
  • At least one of the following” or similar expressions refers to any combination of these items.
  • at least one of a, b or c can mean: a, b, c, "a and b", “a and c", “b and c", or "a and b and c" ".
  • determining B based on A does not mean determining B only based on A.
  • B can also be determined based on A and/or other information.
  • the technical solution provided by this application can be applied to wireless personal area network (WPAN) based on UWB technology.
  • the method provided in this application can be applied to the Institute of Electrical and Electronics Engineers (IEEE) 802.15 series protocols, such as the 802.15.4a protocol, 802.15.4z protocol or 802.15.4ab protocol, or a future generation of UWB WPAN The standard is medium, so I won’t list them all here.
  • the method provided by this application can also be applied to various communication systems, such as Internet of Things (IoT) systems, Vehicle to X (V2X), Narrowband Internet of Things (NB) -IoT) system, used in devices in the Internet of Vehicles, IoT nodes, sensors, etc.
  • IoT Internet of Things
  • V2X Vehicle to X
  • NB Narrowband Internet of Things
  • LTE frequency division duplex (FDD) system LTE time division duplex (TDD), universal mobile telecommunication system (UMTS), global interconnection Microwave access (worldwide interoperability for microwave access, WiMAX) communication system, long term evolution (long term evolution, LTE) system, or fifth generation (5th-generation, 5G) communication system, sixth generation (6th-generation, 6G) communication system, etc.
  • FDD frequency division duplex
  • TDD LTE time division duplex
  • UMTS universal mobile telecommunication system
  • WiMAX global interconnection Microwave access
  • WiMAX worldwide interoperability for microwave access
  • LTE long term evolution
  • 5G fifth generation
  • 6th-generation, 6G sixth generation
  • UWB technology is a new type of wireless communication technology. It uses nanosecond-level non-sinusoidal narrow pulses to transmit data. By modulating the impulse pulses with very steep rise and fall times, it occupies a wide spectrum range, making the signal have a gigahertz (GHz) level. bandwidth. The bandwidth used by UWB is usually above 1GHz. Because the UWB system does not need to generate a sinusoidal carrier signal and can directly transmit impulse sequences, the UWB system has a wide spectrum and very low average power. The UWB wireless communication system has strong multipath resolution, low power consumption, and strong confidentiality. and other advantages, which is conducive to coexistence with other systems, thereby improving spectrum utilization and system capacity.
  • GHz gigahertz
  • the transmit power of UWB transmitters can usually be less than 1mW (milliwatt).
  • the interference generated by UWB signals is only equivalent to white noise. This facilitates good coexistence between UWB and existing narrowband communications. Therefore, the UWB system can work simultaneously with the narrowband (NB) communication system without interfering with each other.
  • the method provided by this application can be implemented by a communication device in a wireless communication system.
  • the device or chip that implements the functions of the UWB system may be called a UWB module
  • the device or chip that implements the functions of the narrowband communication system may be called a narrowband communication module.
  • the UWB module and the narrowband communication module can be different devices or chips. Of course, the UWB module and the narrowband communication module can also be integrated on one device or chip. The embodiments of this application do not limit the implementation of the UWB module and the narrowband communication module in the communication device. .
  • the communication device in this application includes a UWB module and optionally a narrowband communication module.
  • the embodiments of this application mainly take WPAN as an example, for example, the network applied to the IEEE 802.15 series standards is used as an example for explanation.
  • WLAN wireless local area networks
  • Bluetooth BLUETOOTH
  • HIPERLAN high performance wireless LAN
  • WAN wide area networks
  • the various aspects provided herein may be applicable to any suitable wireless network, regardless of the coverage and wireless access protocols used.
  • the communication device in the embodiment of the present application may be a device that supports multiple WPAN standards such as 802.15.4a and 802.15.4z, as well as the IEEE 802.15.4ab or subsequent versions currently under discussion.
  • the method provided by this application can be implemented by a communication device in a wireless communication system.
  • the communication device may be a device involved in a UWB system.
  • the communication device may include but is not limited to a communication server, router, switch, network bridge, computer, mobile phone, etc. that supports UWB technology.
  • the communication device may include user equipment (UE).
  • the user equipment may include various handheld devices that support UWB technology, vehicle-mounted devices (such as cars or components installed on cars, etc.), wearable devices, Internet of things (IoT) devices, computing devices or other processing devices connected to wireless modems, etc., are not listed here.
  • the communication device may include a central control point, such as a personal area network (PAN) or a PAN coordinator.
  • PAN personal area network
  • PAN coordinator such as a personal area network (PAN) or a PAN coordinator.
  • the PAN coordinator or PAN can be a mobile phone, a vehicle-mounted device, an anchor, a tag or a smart home, etc.
  • the communication device may include a chip, and the chip may be installed in a communication server, router, switch or terminal equipment, etc., which are not listed here. It can be understood that the above description about the communication device is applicable to the first communication device and the second communication device in this application.
  • the communication device may include 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. method to communicate.
  • FIG. 1 is a schematic structural diagram of a wireless communication system provided by an embodiment of the present application.
  • the wireless communication system is a star topology structure.
  • a central control node (the PAN coordinator in Figure 1) can communicate with one or more other devices.
  • Figure 2 is another schematic structural diagram of a wireless communication system provided by an embodiment of the present application.
  • the wireless communication system is a point-to-point topology.
  • the central control node (the PAN coordinator in Figure 2) can communicate with one or more other devices. Other different devices Data communication can also be carried out between them.
  • both full function device (full function device) and low function device (reduced function device) can be understood as the communication device shown in this application.
  • Full-function devices and low-function devices are relative.
  • a low-function device cannot be a PAN coordinator.
  • Another example is that compared with a full-function device, a low-function device may not have coordination capabilities or may have a lower communication rate than a full-function device.
  • the PAN coordinator shown in Figure 2 is only an example.
  • the other three full-function devices shown in Figure 2 can also serve as PAN coordinators, and will not be shown one by one here.
  • the full-function devices and low-function devices shown in this application are only examples of communication devices, and any device that can implement the UWB-based PPDU transmission method provided by this application falls within the protection scope of this application.
  • FIG 3 is a schematic diagram of the frame structure of the PPDU provided by the embodiment of the present application. As shown in Figure 3, four types of PPDU structures are shown.
  • the PPDU contains one or more of the following: synchronization (SYNC) field, start-of-frame delimiter (SFD) field, physical layer header (physical layer header, PHR), physical bearer field (PHY) payload field), or scrambled timestamp sequence (scrambled timestamp sequence, STS).
  • SYNC synchronization
  • SFD start-of-frame delimiter
  • PHR physical layer header
  • PHY physical bearer field
  • STS scrambled timestamp sequence
  • the receiving end performs PPDU detection and synchronization based on the synchronization (SYNC) field; the PHR carries some physical layer indication information, such as modulation and coding information or PPDU length information, etc., to assist the receiving end in correctly demodulating the data; the physical bearer field is used to Carry data.
  • SYNC synchronization
  • the PHR carries some physical layer indication information, such as modulation and coding information or PPDU length information, etc., to assist the receiving end in correctly demodulating the data
  • the physical bearer field is used to Carry data.
  • the synchronization (SYNC) field may contain multiple repeated symbols generated from the preamble sequence.
  • SYNC synchronization
  • FIG 4 is a schematic diagram of the symbol structure contained in the SYNC field provided by an embodiment of the present application.
  • C i (0), C i (1),..., C i (K-1) represent a preamble sequence of length K.
  • the length of the preamble sequence may include 31, 91 or 127.
  • the preamble sequence may be a ternary sequence composed of three values ⁇ –1, 0, +1 ⁇ (which may also be called an Ipatov sequence) in any of the 802.15.4a or 802.15.4z protocols.
  • the specific content of the ternary sequence with a length of 31, 91 or 127 can be found in the 802.15.4a and 802.15.4z standards, which will not be described here.
  • Figure 5 is an autocorrelation simulation of an Ipatov sequence provided by an embodiment of the present application. Result diagram. As shown in Figure 5, the Ipatov sequence of length 31 has a value at the origin (that is, the ordinate at the origin is not 0), and is 0 elsewhere on the abscissa (that is, the ordinate at other non-origin points is 0) .
  • the main lobe amplitude of the periodic autocorrelation of an Ipatov sequence with a length of 31 is 16 (which can also be understood as the peak value of the periodic autocorrelation is 16), and the side lobe amplitude of the periodic autocorrelation is 0.
  • the abscissa shown in Figure 5 represents the time shift, and the ordinate represents the amplitude of periodic autocorrelation.
  • the abscissa shown in FIG. 5 can also be understood as an element or a bit, etc.
  • the embodiment of the present application does not limit the interpretation of the abscissa involved in the simulation of the periodic autocorrelation function. Since autocorrelation can be understood as the cross-correlation between a signal and itself at different points in time, the positive and negative axis values in the abscissa can be determined by the length of the Ipatov sequence.
  • This application calls a sequence in which the main lobe amplitude of periodic autocorrelation is not 0 and the side lobe amplitude of periodic autocorrelation is 0 as a perfect sequence.
  • (n+ ⁇ )mod N represents the remainder of (n+ ⁇ ) divided by N, which will not be described again below.
  • the receiving end can take advantage of the autocorrelation characteristics of the sequence, use the same sequence to perform correlation processing with the received UWB signal, such as correlation operations, and use the results of correlation processing to perform synchronization and other operations.
  • Figure 6 is a simulation result of two different Ipatov sequences provided by the embodiment of the present application. Schematic diagram of cross-correlation simulation results. As shown in Figure 6, the code sequence (codesequence) with code index (codeindex) of 9 and 10 in the 802.15.4z standard is shown. Perform cross-correlation simulation results. As can be seen from Figure 6, two different Ipatov sequences with a length of 127 are cyclically cross-correlated, and there is no zero correlation area.
  • the side lobe amplitude of the cross-correlation side lobes is 8 or -8, and the side lobe amplitude with the largest absolute value is -20.
  • the amplitude of the cross-correlation side lobes is large, it may lead to errors in the judgment of the auto-correlation main lobe of the Ipatov sequence, that is, a certain cross-correlation side lobe is judged as the auto-correlation main lobe of the Ipatov sequence (for example, the cross-correlation in Figure 6 may be The position where the side lobe amplitude is -20 is judged to be the position of the autocorrelation main lobe of the Ipatov sequence), resulting in poor anti-interference performance of this Ipatov sequence.
  • the abscissa shown in Figure 6 represents the value of ⁇ in the periodic autocorrelation function R x ( ⁇ ) and the periodic cross-correlation function R x, y ( ⁇ ).
  • x and y respectively represent two Ipatov sequences.
  • the ordinate Indicates the amplitude of the periodic autocorrelation and periodic crosscorrelation (auto/crosscorrelation of two Ipatovsequences) of two Ipatov sequences.
  • FIG. 7 is a schematic diagram of UWB signal segmented transmission provided by an embodiment of the present application. As shown in Figure 7, the transmitter splits the UWB signal to be transmitted into multiple fragments.
  • each UWB segment is a PPDU.
  • the PPDU frame structure of UWB segmented signals can only contain a synchronization (SYNC) field and optionally a start-of-frame delimiter (SFD) field.
  • SYNC synchronization
  • SFD start-of-frame delimiter
  • the PPDU frame structure of the UWB segmented signal does not contain a data part.
  • the frame structure of the UWB signal in the 802.15.4a and 802.15.4z standards does not only contain the synchronization (SYNC) field, so if the preamble defined in the 802.15.4a and 802.15.4z standards is Code sequences (such as Ipatov sequences with lengths of 31, 91 or 127) applied to the UWB fragment signal shown in Figure 7 will cause problems for devices that only support the 802.15.4a or 802.15.4z standard (or in other words Existing UWB equipment) causes serious interference. This is because after the existing UWB device receives the identifiable preamble sequence, there is no subsequent signal to receive.
  • SYNC synchronization
  • a UWB device may refer to a communication device that supports UWB technology (such as 802.15 series protocols), which will not be described again below.
  • the communication device in this application can not only support 802.15 series protocols, such as 802.15.4ab standard or the next generation standard of 802.15.4ab, etc.; it can also support other standard protocols (such as 802.11 series protocols), such as 802.11ax, 802.11ac, and 802.11n , 802.11g, 802.11b, 802.11a, 802.11be and its next generation and other various wireless LAN (wireless local area networks, WLAN) standards of the 802.11 family.
  • 802.15 series protocols such as 802.15.4ab standard or the next generation standard of 802.15.4ab, etc.
  • other standard protocols such as 802.11 series protocols
  • 802.11ax, 802.11ac, and 802.11n such as 802.11g, 802.11b, 802.11a, 802.11be and its next generation and other various wireless LAN (wireless local area networks, WLAN) standards of the 802.11 family.
  • 802.11 series protocols such as 802.11ax, 802.11ac, and 802.
  • Figure 8 is a schematic flowchart of an information interaction method provided by an embodiment of the present application.
  • the first communication device involved in this method may be the PAN coordinator in the aforementioned Figure 1 or Figure 2, and the second communication device may be any device except the PAN coordinator in the aforementioned Figure 1 or Figure 2.
  • the information interaction method includes but is not limited to the following steps:
  • the first communication device generates configuration information.
  • the configuration information includes device addresses of one or more devices.
  • the configuration information also includes sequence configuration information.
  • the sequence configuration information includes the number of cyclic shift bits corresponding to each device.
  • the cyclic shift The number of shifts is used to cyclically shift the sequences in the sequence set.
  • the periodic autocorrelation side lobe amplitude of any sequence in the sequence set is 0.
  • the number of shifts corresponding to the devices used to complete different services in the one or more devices is The number of cyclic shifts is different.
  • the first communication device sends the configuration information.
  • the first communication device sends the configuration information in a broadcast manner.
  • one or more communication devices receive the configuration information.
  • the device address is used to identify the device.
  • the device address in the embodiment of this application can be a complete address, such as a complete MAC address, or a part of the complete address, such as the first 16 digits or the first 8 digits of the MAC address; the embodiment of this application does not limit the device address. Method to realize.
  • the device address included in the above configuration information can also be replaced by a device identifier.
  • the above sequence configuration information includes the number of cyclic shifts corresponding to each of the above one or more devices, and the number of cyclic shifts is used to cyclically shift the sequence in the sequence set.
  • the sequence configuration information is used to determine the preamble sequence.
  • the preamble sequence may be obtained by cyclically shifting the sequence in the sequence set, or by cyclically shifting the sequence and repeating it one or more times. It can be understood that if the number of cyclic shifts is 0, the preamble sequence is a sequence in the sequence set, or this sequence is repeated one or more times.
  • any sequence in the sequence set is a complete sequence.
  • a complete sequence usually consists of at least two elements of 1, -1 and 0.
  • a complete sequence remains a complete sequence after cyclic shifting. Therefore, the preamble sequence in the embodiment of this application is also a complete sequence.
  • the number of cyclic shifts corresponding to the devices used to complete different services among the one or more devices mentioned above is different.
  • the number of cyclic shifts corresponding to the devices performing different services is different; the one Or the devices used to jointly complete a service among multiple devices have the same cyclic shift number.
  • multiple devices can correspond to one cyclic shift number.
  • the above one or more devices belong to M device groups, each device group includes at least one device, and the devices in each device group are used to jointly complete a service.
  • One device group corresponds to one cyclic shift number
  • M device groups correspond to M different cyclic shift numbers.
  • M is an integer greater than or equal to 1.
  • the above one or more devices correspond to the same sequence in the sequence set, and the M cyclic shift bits corresponding to the M device groups are used to cyclically shift the same sequence in the sequence set.
  • the length of this sequence is N.
  • the number of cyclic shifts corresponding to M device groups is: 0, Z, 2Z, 3Z,..., (M-1) ⁇ Z.
  • Z satisfies the following conditions:
  • any sequence in the sequence set is an Ipatov sequence
  • M cyclic shift bits corresponding to M device groups are used to cyclically shift the same Ipatov sequence in the sequence set.
  • the preamble sequences of these M device groups are shown in Figure 9.
  • Figure 9 is a schematic diagram of the preamble sequences of M device groups provided by an embodiment of the present application. As shown in Figure 9, the preamble sequence of the first device group is an Ipatov sequence repeated one or more times without cyclic shift (or the number of cyclic shifts is 0), and the preamble sequence of the second device group is an Ipatov sequence.
  • the preamble sequence of the third device group is Ipatov cycle shift by Z positions (Ipatov cycle shift by Z positions) and then repeated one or more times. times, and so on, the preamble sequence of the M-th device group is the Ipatov sequence cyclically shifted by (M-1) ⁇ Z positions (Ipatov cycle shift by (M-1)*Z positions) and repeated one or more times.
  • the preamble sequences of 2 device groups are shown in Figure 10a.
  • Figure 10a is a schematic diagram of the preamble sequences of 2 device groups provided by the embodiment of the present application; 4 devices
  • the preamble sequence of the group is shown in Figure 10b.
  • Figure 10b is a schematic diagram of the preamble sequence of four device groups provided by the embodiment of the present application.
  • the preamble sequence of the first device group is an Ipatov sequence of length N, which is cyclically shifted by 0 bits (or not cyclically shifted) and repeated one or more times.
  • the preamble sequence of the second device group is Ipatov. sequence circular shift Repeat one or more times after the bit.
  • the length of the zero cross-correlation area between the preamble sequences of the two device groups in Figure 10a is As shown in Figure 10b, the preamble sequence of the first device group is an Ipatov sequence of length N, which is cyclically shifted by 0 bits (or not cyclically shifted) and repeated one or more times.
  • the preamble sequence of the second device group is Ipatov. sequence circular shift bit is repeated one or more times
  • the preamble sequence of the third device group is the Ipatov sequence cyclic shift bit is repeated one or more times
  • the preamble sequence of the fourth device group is the Ipatov sequence cyclic shift Repeat one or more times after the bit.
  • the length of the zero cross-correlation area between the preamble sequences of two adjacent device groups (such as the i-th and i+1-th device groups, the value of i is 1, 2, 3) in Figure 10b for
  • Figures 9, 10a and 10b take the sequence in the sequence set as an Ipatov sequence as an example, the embodiment of the present application does not limit the sequence in the sequence set to be a specific complete sequence.
  • the zero cross-correlation zone can be understood as the absence of cross-correlation side lobes within a certain time shift, and the certain time shift is the length Z of the zero cross-correlation zone. That is to say, there are continuous ⁇ values. Under these ⁇ values, the periodic cross-correlation function R x, y ( ⁇ ) is 0. These continuous ⁇ values are called zero cross-correlation areas.
  • Figure 11 is a schematic diagram of the zero cross-correlation area provided by an embodiment of the present application. As shown in Figure 11, the zero amplitude value area between the autocorrelation main lobe and the first cross-correlation side lobe is the zero cross-correlation area.
  • the abscissa in Figure 11 represents the value of ⁇ in the periodic autocorrelation function R x ( ⁇ ) and the periodic cross-correlation function R x, y ( ⁇ ).
  • the magnitude of the cross-correlation can be understood as except that the autocorrelation amplitude at the origin is not 0, and there are other continuous time shifts whose autocorrelation amplitude is 0. That is to say, there are continuous ⁇ values. Under these ⁇ values, the periodic autocorrelation function R x ( ⁇ ) is 0. These continuous ⁇ values are called zero autocorrelation zones.
  • the complete sequences corresponding to the devices used to complete different services among the one or more devices mentioned above may be the same or different, and are not limited in the embodiments of this application.
  • the number of cyclic shifts may be different; multiple devices used to jointly complete a service
  • the number of bits in the circular shifts may be the same or different.
  • the above sequence configuration information also includes a sequence identifier corresponding to each device, and the sequence identifier is used to identify the sequence in the sequence set.
  • the sequence identifiers corresponding to the devices used to jointly complete a service among the one or more devices mentioned above are the same, and the sequence identifiers corresponding to the devices used to complete different services among the one or more devices mentioned above are different.
  • the second communication device determines the number of cyclic shift bits corresponding to the second communication device according to the configuration information.
  • one or more communication devices may determine their corresponding cyclic shift number.
  • the following description takes the second communication device receiving the configuration information as an example.
  • the second communication device After receiving the configuration information, the second communication device searches the sequence configuration information included in the configuration information for a cycle corresponding to the device that matches its own device address based on the device addresses of one or more devices included in the configuration information. Shift number. The second communication device can then determine the target sequence for cyclic shift from the sequence set, and obtain the preamble sequence after cyclically shifting the target sequence (repeating one or more times), and the number of digits of the cyclic shift is equal to the third The number of cyclic shift bits corresponding to the two communication devices. The second communication device sends a PPDU, which includes the preamble sequence.
  • the preamble sequence can be carried in the synchronization (SYNC) field of the PPDU.
  • the frame structure of the PPDU in the embodiment of the present application may only include the synchronization (SYNC) field, and optionally the frame start delimiter (SFD) field; the frame structure of the PPDU in the embodiment of the present application may also be any of the aforementioned ones shown in Figure 3
  • a frame structure is not limited in the embodiment of this application.
  • the methods for determining the target sequence include but are not limited to the following three methods.
  • the second communication device negotiates with the other party that interacts with it (or performs the same service) to determine which sequence in the sequence set is the sequence to be cyclically shifted.
  • the negotiated determined sequence is referred to as The sequence is the target sequence.
  • the above sequence configuration information also includes the sequence length corresponding to each device. After receiving the sequence configuration information, the second communication device can determine its corresponding sequence length, based on its corresponding sequence length. Find a sequence equal to the sequence length in the sequence set as the target sequence. In this implementation, there is only one sequence of the same length in the sequence set.
  • the above sequence configuration information also includes a sequence identifier corresponding to each device, and the second communication device receives the After configuring the sequence information, you can determine your corresponding sequence ID.
  • the sequence identified by the sequence ID in the sequence set is the target sequence.
  • any sequence in the sequence set in the embodiment of this application is a complete sequence, which includes three elements: 1, -1 and 0. It can be understood that element 1 in the sequence can be represented by a positive pulse, element -1 can be represented by a negative pulse, and element 0 represents no pulse.
  • Table 1 shows some sequences that may be used in the sequence set of the embodiment of the present application. It can be understood that each sequence in Table 1 is only an example, and it can be modified in various ways. For example, the sequence in Table 1 can be cyclically shifted, inverted, or reversed to obtain an equivalent sequence of the same length. In Table 1 Various modifications of each sequence are within the protection scope of the embodiments of this application.
  • Table 1 above shows complete sequences of different sequence lengths (i.e. N). It can be understood that when the channel quality is poor or the number of users is large, using a complete sequence with a longer sequence length N to generate a preamble sequence can improve the performance of the UWB system. This is because the longer the sequence length N of the complete sequence is, the more non-zero elements there are in the complete sequence, and the greater the amplitude of the periodic autocorrelation main lobe of the generated preamble sequence, which is the period of the preamble sequence.
  • the UWB-based PPDU transmission method provided by the embodiments of this application can be applied to scenarios such as ranging, positioning, or sensing between one node and one node, or can also be applied to ranging and positioning between one node and multiple nodes. Or sensing and other scenarios, it can also be applied to multiple nodes and multiple nodes ranging, positioning or sensing scenarios, etc., the embodiments of this application are not limited.
  • the third communication device sends the PPDU.
  • the above preamble sequence can be carried in the synchronization (SYNC) field of the PPDU.
  • SYNC synchronization
  • the frame structure of the PPDU in the embodiment of the present application may only include the synchronization (SYNC) field, and optionally the frame start delimiter (SFD) field; the frame structure of the PPDU in the embodiment of the present application may also be any of the aforementioned ones shown in Figure 3
  • a frame structure is not limited in the embodiment of this application.
  • the above preamble sequence is obtained by cyclically shifting the target sequence in the above sequence set, or the above preamble sequence is obtained by cyclically shifting the target sequence in the above sequence set and repeating it one or more times.
  • the periodic autocorrelation side lobe amplitude of any sequence in the sequence set is 0.
  • the sequence set in the embodiment of this application may include all or part of the sequences in Table 1.
  • At least one of the target sequence and the number of cyclic shift bits may be negotiated and determined by the third communication device and the fourth communication device.
  • the unnegotiated part of the target sequence and the number of cyclic shift bits can be determined through coordinator configuration or other means, and is not limited in this embodiment of the present application.
  • the third communication device and the fourth communication device can determine the target sequence by negotiating the sequence index, and then perform cyclic shifting on the target sequence to generate a preamble sequence. .
  • the third communication device and the fourth communication device can also determine the target sequence by negotiating the sequence length, and then perform cyclic shift on the target sequence to generate a preamble sequence.
  • the target sequence may be configured by the PAN coordinator (coordinator) shown in Figure 1 or Figure 2 for the third communication device and the fourth communication device.
  • PAN coordinator coordinator
  • the unconfigured portion of the target sequence and the number of cyclic shift bits can be determined through negotiation between the third communication device and the fourth communication device or other methods, which are not limited by the embodiments of this application.
  • a coordinator broadcasts configuration information, and the configuration information includes the device address of the third communication device.
  • the configuration information also includes sequence configuration information.
  • the sequence configuration information includes one or more of the following: the number of cyclic shifts corresponding to the third communication device, the sequence length corresponding to the third communication device, and the sequence identifier corresponding to the third communication device. .
  • the number of cyclic shifts is used to cyclically shift the target sequence in the sequence set, the sequence length is used to determine the target sequence in the sequence set, and the sequence identifier is used to identify the target sequence in the sequence set.
  • the communication device in the embodiment of the present application determines a sequence from the sequence set, performs cyclic shifting on this sequence and generates a preamble sequence. Because the periodic autocorrelation side lobe amplitude of this sequence is 0, it effectively ensures the autocorrelation characteristics of the preamble sequence. , so that the UWB system has better synchronization performance; in addition, there may be a zero cross-correlation area between the preamble sequences generated by different cyclic shifts, causing mutual interference between multiple communication devices that use different cyclic shift bits. The interference caused by related side lobes is smaller, thereby improving the anti-interference ability of the UWB system.
  • the preamble sequence in addition to the above-mentioned method of cyclically shifting a complete sequence to generate a preamble sequence, the preamble sequence can also be generated in other ways.
  • Embodiment 3 of this application mainly introduces how to generate a preamble sequence by configuring the sampling interval (that is, d) and using d sampling.
  • Figure 13 is another schematic flowchart of an information interaction method provided by an embodiment of the present application.
  • the first communication device involved in this method may be the PAN coordinator in the aforementioned Figure 1 or Figure 2, and the second communication device may be any device except the PAN coordinator in the aforementioned Figure 1 or Figure 2.
  • the information interaction method includes but is not limited to the following steps:
  • the first communication device generates configuration information.
  • the configuration information includes device addresses of one or more devices.
  • the configuration information also includes sequence configuration information.
  • the sequence configuration information includes a sampling interval corresponding to each device.
  • the first communication device sends the configuration information.
  • the first communication device sends the configuration in a broadcast manner.
  • configuration information may be encrypted before being sent, or the sequence configuration information in the configuration information may be encrypted before being sent, or the sampling interval corresponding to each device in the configuration information may be encrypted before being sent.
  • the specific encryption and decryption methods are not limited in the embodiments of this application.
  • one or more communication devices receive the configuration information.
  • the device address is used to identify the device.
  • the device address in the embodiment of this application can be a complete address, such as a complete MAC address, or a part of the complete address, such as the first 16 digits or the first 8 digits of the MAC address; the embodiment of this application does not limit the device address. Method to realize.
  • the device address included in the above configuration information can also be replaced by a device identifier.
  • the above sequence configuration information includes the sampling interval corresponding to each of the above one or more devices.
  • a sampling interval is used to sample a sequence in the sequence set after repeating the sampling interval times.
  • the sampling interval (d ) is relatively prime to the length (N) of the sequence (that is, the greatest common divisor of d and N is 1).
  • the embodiment of the present application records the sampling interval as d, and d is a positive integer; that is to say, the sampling interval is a positive integer.
  • the above sequence configuration information can be used to determine the preamble sequence.
  • the preamble sequence can be a d sample sequence obtained by repeating the sequence d times in the sequence set and extracting one bit every d elements.
  • the preamble sequence It can also be obtained by repeating the d sampling sequence one or more times.
  • the sampling intervals corresponding to the devices used to complete different services among the one or more devices mentioned above are different.
  • the sampling intervals (ie, the values of d) corresponding to the devices performing different services are different.
  • the sampling intervals corresponding to the devices used to jointly complete a service among the one or more devices mentioned above are the same.
  • multiple devices can correspond to one sampling interval (that is, multiple devices can correspond to the same d).
  • one or more of the above devices can be divided into multiple device groups, and the devices in each device group are used to jointly complete a service.
  • One device group can correspond to one sampling interval (that is, the value of d), and the multiple sampling intervals corresponding to multiple device groups can be different.
  • the sampling intervals may be different; multiple devices used to jointly complete a service sample different sequences.
  • the sampling intervals can be the same or different.
  • the above sequence configuration information also includes the sequence length corresponding to each device, and the sequence length is used to determine the sequence used for sampling in the sequence set. For example, there is only one sequence of the same length in the sequence set, so a sequence can be uniquely determined by the sequence length.
  • the sampling interval d corresponding to a device is relatively prime to the sequence length N corresponding to the device.
  • the above sequence configuration information also includes a sequence identifier corresponding to each device, and the sequence identifier is used to identify the sequence in the sequence set.
  • the sequence identifiers corresponding to the devices used to jointly complete a service among the one or more devices mentioned above are the same, and the sequence identifiers corresponding to the devices used to complete different services among the one or more devices mentioned above are different.
  • the sampling interval d corresponding to a device is relatively prime to the length N of the sequence identified by the sequence identifier corresponding to the device.
  • the second communication device determines the sampling interval corresponding to the second communication device according to the configuration information.
  • one or more communication devices may determine their corresponding sampling interval d.
  • the following description takes the second communication device receiving the configuration information as an example.
  • the preamble sequence can be carried in the synchronization (SYNC) field of the PPDU.
  • SYNC synchronization
  • the frame structure of the PPDU in the embodiment of the present application may only include the synchronization (SYNC) field, and optionally the frame start delimiter (SFD) field; the frame structure of the PPDU in the embodiment of the present application may also be any of the aforementioned ones shown in Figure 3
  • a frame structure is not limited in the embodiment of this application.
  • the above-described second sequence may be determined in any of the following three ways.
  • the second communication device negotiates with the other party that interacts with it (or performs the same service) to determine which sequence in the sequence set the sequence to be sampled is.
  • the sequence determined through negotiation is denoted as Second sequence.
  • the above sequence configuration information also includes the sequence length corresponding to each device. After receiving the sequence configuration information, the second communication device can determine its corresponding sequence length, based on its corresponding sequence length. Find a sequence equal to the sequence length in the sequence set as the second sequence. In this implementation, there is only one sequence of the same length in the sequence set.
  • the above-mentioned sequence configuration information also includes a sequence identifier corresponding to each device.
  • the second communication device can determine its corresponding sequence identifier, which is identified in the sequence set.
  • the sequence is the second sequence.
  • the embodiment of the present application generates the preamble sequence by sampling the complete sequence, because after the complete sequence is repeated d times, a d sampling sequence composed of one bit is extracted every d elements (the d sampling sequence is the d sampling sequence in the embodiment of the present application
  • the preamble sequence is still a complete sequence, effectively ensuring the autocorrelation characteristics of the preamble sequence, making the UWB system have better synchronization performance.
  • the coordinator configures the sampling interval (the configuration information can be encrypted to prevent unauthorized users from learning), and uses the configured sampling interval to sample the complete sequence to generate a preamble sequence, so that unauthorized users cannot measure the CIR.
  • the sampling interval the configuration information can be encrypted to prevent unauthorized users from learning
  • uses the configured sampling interval to sample the complete sequence to generate a preamble sequence, so that unauthorized users cannot measure the CIR.
  • Embodiment 4 of this application mainly introduces a method of using a complete sequence to perform sampling to generate a new preamble sequence.
  • Figure 14 is another schematic flowchart of a UWB-based PPDU transmission method provided by an embodiment of the present application.
  • the third communication device and the fourth communication device involved in this method may be any two devices in the aforementioned Figure 1 or Figure 2 that can perform data transmission.
  • the UWB-based PPDU transmission method includes but is not limited to the following steps:
  • the third communication device generates a PPDU.
  • the PPDU includes a preamble sequence.
  • the preamble sequence is generated based on the second sequence in the sequence set and the sampling interval.
  • the sampling interval is relatively prime to the length of the second sequence. Any sequence in the sequence set is The amplitude of the periodic autocorrelation side lobe of a sequence is 0.
  • the third communication device sends the PPDU.
  • the fourth communication device receives the PPDU.
  • the fourth communication device processes the PPDU.
  • the above preamble sequence can be carried in the synchronization (SYNC) field of the PPDU.
  • SYNC synchronization
  • the frame structure of the PPDU in the embodiment of the present application may only include the synchronization (SYNC) field, and optionally the frame start delimiter (SFD) field; the frame structure of the PPDU in the embodiment of the present application may also be any of the aforementioned ones shown in Figure 3
  • a frame structure is not limited in the embodiment of this application.
  • the third communication device can extract one bit from every d elements of the sequence obtained by repeating the complete sequence d times to form a d sampling sequence of the complete sequence.
  • the d sampling sequence is the preamble sequence.
  • the length of the complete sequence is N, and the sampling interval d satisfies that d and N are relatively prime (that is, the greatest common divisor of d and N is 1). By selecting different d, different preamble sequences can be generated.
  • At least one of the second sequence and the sampling interval d may be negotiated and determined by the third communication device and the fourth communication device.
  • the unnegotiated part of the second sequence and the sampling interval d can be determined through coordinator configuration or other means, and is not limited by the embodiment of this application.
  • the negotiation process may be encrypted, and the embodiment of this application does not limit the specific encryption and decryption methods.
  • the third communication device and the fourth communication device can determine the second sequence by negotiating the sequence index, and then repeat the sampling interval d for the second sequence. After that, one bit is extracted every d elements of the sampling interval to generate a preamble sequence.
  • the second sequence may be configured by the PAN coordinator (coordinator) shown in Figure 1 or Figure 2 for the third communication device and the fourth communication device.
  • PAN coordinator coordinator
  • the relevant description of Example 3 will not be repeated here.
  • the second sequence and the unconfigured part of the sampling interval d can be determined through negotiation between the third communication device and the fourth communication device or other methods, which are not limited by the embodiments of this application.
  • a coordinator broadcasts configuration information, and the configuration information includes the device address of the third communication device.
  • the configuration information also includes sequence configuration information, which includes one or more of the following: a sampling interval corresponding to the third communication device, a sequence length corresponding to the third communication device, and a sequence identifier corresponding to the third communication device.
  • the sampling interval is used to sample the second sequence in the sequence set after repeating the sampling interval d times, and the sequence length is used to determine the second sequence used for sampling in the sequence set. Column that identifies the second sequence in the sequence set.
  • the configuration information can also be encrypted, and the specific encryption and decryption methods are not limited in this embodiment of the application.
  • the communication device in the embodiment of the present application determines a complete sequence from the sequence set, samples this complete sequence to generate a preamble sequence, because after the complete sequence is repeated d times, a d sampling sequence composed of one bit is extracted every d elements (the d).
  • the sampling sequence i.e., the preamble sequence in the embodiment of the present application
  • the embodiment of the present application negotiates the sampling interval between the sending and receiving parties (the negotiation process can be encrypted to prevent unauthorized users from learning), and uses the negotiated sampling interval to sample the complete sequence to generate the preamble sequence, and also It can prevent unauthorized users from measuring CIR, thereby improving security in the UWB sensing process. This is because even if the unauthorized user knows the complete sequence, the unauthorized user cannot know the sampling interval. Then the unauthorized user listens to the preamble and cannot obtain the main lobe by using the preamble to perform autocorrelation with the known complete sequence, that is, it is impossible to obtain the main lobe. CIR is measured.
  • the coordinator can broadcast configuration information, which includes the device addresses of one or more devices.
  • the configuration information also includes sequence configuration information.
  • the sequence configuration information is used to indicate whether each device takes the reverse order or Whether to negate.
  • after one or more communication devices receive the configuration information they can process their respective complete sequences according to the instructions of the sequence configuration information (such as reverse order or inversion), generate their respective preamble sequences, and send the preamble sequence containing the preamble. code sequence PPDU.
  • the complete sequence of the embodiment of the present application may be all or part of what is shown in Table 1 above.
  • the sender and the receiver can negotiate whether to reverse the order or whether to invert, and the complete sequence for reverse order or inversion.
  • the sender and the receiver can generate a preamble sequence based on the negotiation results. , and exchange the PPDU containing the preamble sequence.
  • the complete sequence of the embodiment of the present application may be all or part of what is shown in Table 1 above.
  • Figure 15 is a schematic structural diagram of a communication device provided by an embodiment of the present application. As shown in FIG. 15 , the communication device includes a transceiver unit 10 and a processing unit 20 .
  • the processing unit 20 is used to generate configuration information.
  • the configuration information includes the device addresses of one or more devices.
  • the configuration information also includes sequence configuration information.
  • the sequence configuration information includes the cyclic shift corresponding to each device.
  • the number of cyclic shift bits is used to cyclically shift the sequence in the sequence set.
  • the periodic autocorrelation side lobe amplitude of any sequence in the sequence set is 0.
  • the one or more devices are used to complete different services.
  • the devices have different cyclic shift bits; the transceiver unit 10 is used to send the configuration information.
  • the communication device may be the second communication device shown above or a chip therein. That is, the communication device shown in Figure 15 can be used to perform the steps or functions performed by the second communication device in the above method embodiment.
  • the transceiver unit 10 is used to receive configuration information.
  • the configuration information includes the device addresses of one or more devices.
  • the configuration information also includes sequence configuration information.
  • the sequence configuration information includes the cyclic shift corresponding to each device.
  • the number of cyclic shift bits is used to cyclically shift the sequence in the sequence set.
  • the periodic autocorrelation side lobe amplitude of any sequence in the sequence set is 0.
  • the one or more devices are used to complete different services.
  • the number of cyclic shifts corresponding to the devices is different; the processing unit 20 is configured to determine the number of cyclic shifts corresponding to the communication device according to the configuration information.
  • the transceiver unit 10 may be configured to receive configuration information and send PPDU; the processing unit 20 may be configured to perform step S103 shown in FIG. 8 .
  • the transceiver unit 10 is also used to send a PPDU.
  • the PPDU includes a preamble sequence.
  • the preamble sequence is obtained by extracting one bit from the first sequence every elements of the first sampling interval.
  • a sequence is obtained by repeating the first sampling interval times for the second sequence in the sequence set.
  • the first sampling interval is the sampling interval corresponding to the second communication device.
  • the first sampling interval is relatively prime to the length of the second sequence.
  • the communication device may be the third communication device shown above or a chip therein. That is, the communication device shown in Figure 15 can be used to perform the steps or functions performed by the third communication device in the above method embodiment.
  • the processing unit 20 is used to generate a PPDU.
  • the PPDU includes a preamble sequence.
  • the preamble sequence is generated by cyclically shifting the target sequence in the sequence set.
  • the periodic autocorrelation of any sequence in the sequence set is The lobe amplitude is 0; the transceiver unit 10 is used to send the PPDU.
  • the processing unit 20 is configured to generate a PPDU.
  • the PPDU includes a preamble sequence.
  • the preamble sequence is generated based on the second sequence in the sequence set and the sampling interval.
  • the sampling interval is relatively prime with the length of the second sequence.
  • the periodic autocorrelation side lobe amplitude of any sequence in the sequence set is 0; the transceiver unit 10 is used to send the PPDU.
  • the transceiver unit 10 is also used to receive configuration information.
  • the communication device may be the fourth communication device shown above or a chip therein. That is, the communication device shown in Figure 15 can be used to perform the steps or functions performed by the fourth communication device in the above method embodiment.
  • the transceiver unit 10 may be configured to receive the PPDU; the processing unit 20 may be configured to perform step S203 shown in FIG. 12 .
  • the transceiver unit 10 is configured to receive a PPDU.
  • the PPDU includes a preamble sequence.
  • the preamble sequence is generated based on the second sequence in the sequence set and the sampling interval.
  • the sampling interval is relatively prime with the length of the second sequence.
  • the periodic autocorrelation side lobe amplitude of any sequence in the sequence set is 0; the processing unit 20 is used to process the PPDU.
  • the processing unit 20 may be one or more processors, and the transceiver unit 10 may be a transceiver, or the transceiver unit 10 may also be a sending unit and a receiving unit.
  • the sending unit may be a transmitter
  • the receiving unit may be a receiver
  • the sending unit and the receiving unit are integrated into one device, such as a transceiver.
  • the processor and the transceiver may be coupled, etc., and the embodiment of the present application does not limit the connection method between the processor and the transceiver.
  • the processor 1001 is mainly used to process communication protocols and communication data, control the entire communication device, execute software programs, and process data of the software programs.
  • Memory 1003 is mainly used to store software programs and data.
  • the transceiver 1002 may include a control circuit and an antenna.
  • the control circuit is mainly used for conversion of baseband signals and radio frequency signals and processing of radio frequency signals.
  • Antennas are mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices, such as touch screens, display screens, keyboards, etc., are mainly used to receive data input by users and output data to users.
  • the radio frequency circuit and antenna can be arranged independently of the processor that performs baseband processing.
  • the radio frequency circuit and antenna can be arranged remotely and independently of the communication device. .
  • the processor 1001, the transceiver 1002, and the memory 1003 can be connected through a communication bus.
  • the communication device 1000 can be used to perform the functions of the first communication device in the first embodiment: the processor 1001 can be used to perform step S101 in Figure 8, and/or to perform the technology described herein. Other Processes: The transceiver 1002 may be used to perform step S102 in FIG. 8, and/or other processes for the techniques described herein.
  • the communication device 1000 can be used to perform the functions of the second communication device in the first embodiment: the processor 1001 can be used to perform step S103 in Figure 8, and/or to perform the technology described herein. Other processes; transceiver 1002 may be used to receive the configuration information in FIG. 8, and/or other processes for the techniques described herein.
  • the communication device 1000 can be used to perform the functions of the third communication device in the aforementioned second embodiment: the processor 1001 can be used to perform step S201 in Figure 12, and/or to perform the technology described herein.
  • the transceiver 1002 may be used to perform step S202 in Figure 12, and/or other processes for the techniques described herein.
  • the communication device 1000 can be used to perform the functions of the fourth communication device in the second embodiment: the processor 1001 can be used to perform step S203 in Figure 12, and/or to perform the technology described herein Other processes; the transceiver 1002 may be used to receive the PPDU processed in step S203 in FIG. 12, and/or other processes for the technology described herein.
  • the communication device 1000 can be used to perform the functions of the second communication device in the third embodiment: the processor 1001 can be used to perform step S303 in Figure 13, and/or to perform the technology described herein. Other processes; transceiver 1002 may be used to receive the configuration information in Figure 13, and/or other processes for the techniques described herein.
  • the communication device 1000 can be used to perform the functions of the third communication device in the aforementioned fourth embodiment: the processor 1001 can be used to perform step S401 in Figure 14, and/or to perform the technology described herein.
  • the transceiver 1002 may be used to perform step S402 in Figure 14, and/or other processes for the techniques described herein.
  • the communication device 1000 can be used to perform the functions of the fourth communication device in the fourth embodiment: the processor 1001 can be used to perform step S403 in Figure 14, and/or to perform the technology described herein Other processes; the transceiver 1002 may be used to receive the PPDU processed in step S403 in FIG. 14, and/or other processes for the technology described herein.
  • the processor 1001 may include a transceiver for implementing receiving and transmitting functions.
  • the transceiver may be a transceiver circuit, an interface, or an interface circuit.
  • the transceiver circuits, interfaces or interface circuits used to implement the receiving and transmitting functions can be separate or integrated together.
  • the above-mentioned transceiver circuit, interface or interface circuit can be used for reading and writing codes/data, or the above-mentioned transceiver circuit, interface or interface circuit can be used for signal transmission or transfer.
  • the processor 1001 may store instructions, which may be computer programs.
  • the computer programs run on the processor 1001 and may cause the communication device 1000 to execute the method described in the above method embodiments.
  • computer program The program may be solidified in the processor 1001, in which case the processor 1001 may be implemented by hardware.
  • the communication device 1000 may include a circuit, and the circuit may implement the functions of sending or receiving or communicating in the foregoing method embodiments.
  • the processor and transceiver described in this application can be implemented in integrated circuits (ICs), analog ICs, radio frequency integrated circuits (RFICs), mixed-signal ICs, application specific integrated circuits (application specific integrated circuits) , ASIC), printed circuit board (PCB), electronic equipment, etc.
  • the scope of the communication device described in this application is not limited thereto, and the structure of the communication device may not be limited by FIG. 16 .
  • the communication device may be a stand-alone device or may be part of a larger device.
  • the communication device may be:
  • the IC collection may also include storage components for storing data and computer programs;
  • the processing unit 20 may be one or more logic circuits, and the transceiver unit 10 may be an input-output interface, also known as a communication interface, or an interface circuit. , or interface, etc.
  • the transceiver unit 10 may also be a sending unit and a receiving unit.
  • the sending unit may be an output interface
  • the receiving unit may be an input interface.
  • the sending unit and the receiving unit may be integrated into one unit, such as an input-output interface.
  • Figure 17 is another schematic structural diagram of a communication device provided by an embodiment of the present application. As shown in FIG. 17 , the communication device shown in FIG. 17 includes a logic circuit 901 and an interface 902 .
  • the configuration information when the communication device is used to perform the method or function or step performed by the first communication device in the first embodiment, the logic circuit 901 is used to generate configuration information, the configuration information includes the device address of one or more devices. , the configuration information also includes sequence configuration information.
  • the sequence configuration information includes the number of cyclic shifts corresponding to each device. The number of cyclic shifts is used to cyclically shift the sequence in the sequence set. Any one in the sequence set The periodic autocorrelation side lobe amplitude of the sequence is 0, and the number of cyclic shifts corresponding to the devices used to complete different services among the one or more devices is different; interface 902, Used to output the configuration information.
  • the interface 902 is used to input a PPDU, the PPDU includes a preamble sequence, and the PPDU includes a preamble sequence,
  • the preamble sequence is generated after cyclic shifting of the target sequence in the sequence set.
  • the periodic autocorrelation side lobe amplitude of any sequence in the sequence set is 0; the logic circuit 901 is used to process the PPDU.
  • the configuration information when the communication device is used to perform the method or function or step performed by the first communication device in the third embodiment, the logic circuit 901 is used to generate configuration information, the configuration information includes the device address of one or more devices. , the configuration information also includes sequence configuration information.
  • the sequence configuration information includes the sampling interval corresponding to each device. A sampling interval is used to sample a sequence in the sequence set after repeating the sampling interval times. The sampling interval is the same as the sampling interval.
  • the lengths of the sequences are relatively prime; the periodic autocorrelation side lobe amplitude of any sequence in the sequence set is 0, and the sampling intervals corresponding to the devices used to complete different services in the one or more devices are different; interface 902 is used for output the configuration information.
  • the interface 902 is used to input configuration information, where the configuration information includes the device address of one or more devices.
  • the configuration information also includes sequence configuration information.
  • the sequence configuration information includes the sampling interval corresponding to each device.
  • a sampling interval is used to sample a sequence in the sequence set after repeating the sampling interval times.
  • the sampling interval is the same as the sequence.
  • the lengths are relatively prime.
  • the periodic autocorrelation side lobe amplitude of any sequence in the sequence set is 0, and the sampling intervals corresponding to the devices used to complete different services in the one or more devices are different; the logic circuit 901 is used to determine the third time according to the configuration information.
  • the logic circuit 901 is used to generate a PPDU.
  • the PPDU includes a preamble sequence, and the preamble sequence is based on the sequence.
  • the second sequence in the set and the sampling interval are generated, the sampling interval is relatively prime with the length of the second sequence, and the periodic autocorrelation side lobe amplitude of any sequence in the sequence set is 0; the interface 902 is used to output the PPDU.
  • the interface 902 is used to input a PPDU.
  • the PPDU includes a preamble sequence, and the preamble sequence is based on a sequence set.
  • the second sequence and the sampling interval are generated.
  • the sampling interval is relatively prime to the length of the second sequence.
  • the length of any sequence in the sequence set is The periodic autocorrelation side lobe amplitude is 0; the logic circuit 901 is used to process the PPDU.
  • the communication device shown in the embodiments of the present application can be implemented in the form of hardware to implement the methods provided in the embodiments of the present application, or can be implemented in the form of software to implement the methods provided in the embodiments of the present application. This is not limited by the embodiments of the present application.
  • An embodiment of the present application also provides a wireless communication system.
  • the wireless communication system includes a first communication device and a second communication device.
  • the first communication device and the second communication device can be used to perform the foregoing Embodiment 1 or the foregoing implementation.
  • An embodiment of the present application also provides a wireless communication system.
  • the wireless communication system includes a third communication device and a fourth communication device.
  • the third communication device and the fourth communication device can be used to perform the foregoing second embodiment or the foregoing implementation.
  • this application also provides a computer program, which is used to implement the operations and/or processing performed by the first communication device in the method provided by this application.
  • This application also provides a computer program, which is used to implement the operations and/or processing performed by the second communication device in the method provided by this application.
  • This application also provides a computer program, which is used to implement the operations and/or processing performed by the third communication device in the method provided by this application.
  • This application also provides a computer program, which is used to implement the operations and/or processing performed by the fourth communication device in the method provided by this application.
  • This application also provides a computer-readable storage medium that stores computer code.
  • the computer code When the computer code is run on a computer, it causes the computer to perform the operations performed by the first communication device in the method provided by this application. and/or processing.
  • This application also provides a computer-readable storage medium that stores computer code.
  • the computer code When the computer code is run on a computer, it causes the computer to perform the operations performed by the second communication device in the method provided by this application. and/or processing.
  • This application also provides a computer-readable storage medium that stores computer code.
  • the computer code When the computer code is run on a computer, it causes the computer to perform the operations performed by the third communication device in the method provided by this application. and/or processing.
  • This application also provides a computer-readable storage medium that stores computer code.
  • the computer code When the computer code is run on a computer, it causes the computer to perform the operations performed by the fourth communication device in the method provided by this application. and/or processing.
  • the present application also provides a computer program product.
  • the computer program product includes a computer code or a computer program.
  • the operations performed by the first communication device in the method provided by the present application are performed. /or processing is performed.
  • the present application also provides a computer program product.
  • the computer program product includes a computer code or a computer program.
  • the operations performed by the second communication device in the method provided by the present application are performed. /or processing is performed.
  • the application also provides a computer program product, which includes computer code or computer program, When the computer code or computer program is run on the computer, the operations and/or processing performed by the third communication device in the method provided by this application are performed.
  • 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 an indirect coupling or communication connection through some interfaces, devices or units, or may be electrical, mechanical or other forms of connection.
  • 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 may be selected according to actual needs to achieve the technical effects of the solutions provided by the embodiments of the present application.
  • each functional unit in various embodiments of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the above integrated units can be implemented in the form of hardware or software functional units.
  • the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or contributes to the existing technology, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a readable
  • the storage medium includes several instructions 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 readable storage media include: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk, etc. that can store program code medium.

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Abstract

本申请涉及一种信息交互方法及相关装置，该方法包括：通信装置发送配置信息，其包括每个设备对应的循环移位位数，循环移位位数用于对完备序列进行循环移位，用于完成不同业务的设备所对应的循环移位位数不同。采用本申请实施例，可以提高UWB系统的抗干扰性能。本申请应用于基于UWB的无线个人局域网系统，感知系统等，包括802.15系列协议，如802.15.4a协议、802.15.4z协议或802.15.4ab协议等。还可支持802.11ax下一代Wi-Fi协议，如802.11be，Wi-Fi 7或EHT，再如802.11be下一代，Wi-Fi 8等802.11系列协议的无线局域网系统。

Description

信息交互方法及相关装置
本申请要求于2022年06月10日提交中国专利局、申请号为202210654367.X、申请名称为“信息交互方法及相关装置”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
本申请涉及通信技术领域，尤其涉及一种信息交互方法及相关装置。
背景技术
随着超宽带(ultra-wide band，UWB)进入民用领域，超宽带(UWB)无线通信成为短距离、高速无线网络的物理层技术之一。超宽带(UWB)技术是一种无线载波通信技术，如可以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。由于其脉冲比较窄，且辐射谱密度低，因此UWB具有多径分辨能力强，功耗低，保密性强等优点，其主要应用于感知和测距场景中。
电气及电子工程师学会(institute of electrical and electronics engineers，IEEE)将UWB技术纳入其IEEE 802系列无线标准，已经发布了基于UWB技术的高速无线个域网(wireless personal area network，WPAN)标准IEEE 802.15.4a，以及其演进版本IEEE 802.15.4z，而下一代UWB无线个域网(WPAN)标准802.15.4ab正在讨论中。802.15.4a和802.15.4z定义的物理层协议数据单元(physical layer protocol data unit，PPDU)包含同步(synchronization，SYNC)字段，SYNC字段包含多个重复的符号，该符号由前导码序列生成，具体生成方式参见现有标准，这里不展开说明。802.15.4a和802.15.4z中的前导码序列是由{-1,0,1}三种元素构成的三元序列(也称为Ipatov序列)，其长度有31、91或127，不同长度的前导码序列的具体内容参见802.15.4a和802.15.4z标准，这里不展开说明。
目前，UWB系统使用的802.15.4a和802.15.4z中定义的前导码序列的抗干扰性能较差。
发明内容
本申请实施例提供一种信息交互方法及相关装置，可以提高UWB系统的抗干扰性能。
下面从不同的方面介绍本申请，应理解的是，下面的不同方面的实施方式和有益效果可以互相参考。
第一方面，本申请提供一种信息交互方法，应用于UWB系统中，该方法包括：通信装置生成配置信息并以广播的形式发送该配置信息；该配置信息包括一个或多个设备的设备地址，该配置信息还包括序列配置信息，该序列配置信息包括每个设备对应的循环移位位数，该循环移位位数用于对序列集中的序列进行循环移位，该序列集中的任一个序列的周期自相关旁瓣幅度为0，该一个或多个设备中用于完成不同业务的设备所对应的循环移位位数不同。其中，该序列配置信息用于确定前导码序列。可理解，上述序列集中的任一个序列的周期自相关旁瓣幅度为0，且周期自相关主瓣幅度不为0，示例性的，该序列集中的任一个序列可以是完备序列。
可理解，上述通信装置可以是UWB系统中的协调者(coordinator)。
本申请的协调者(coordinator)为用于完成不同业务的设备配置不同的循环移位位数，该循环移位位数用于对序列集中的序列进行循环移位，该序列集中的任一个序列的周期自相关 旁瓣幅度为0；使得至少部分通信装置之间因互相关旁瓣导致的干扰较小，从而提高UWB系统的抗干扰能力。
第二方面，本申请提供一种信息交互方法，应用于UWB系统中，该方法包括：通信装置接收配置信息，该配置信息包括一个或多个设备的设备地址，该配置信息包括一个或多个设备的设备地址，该配置信息还包括序列配置信息，该序列配置信息包括每个设备对应的循环移位位数，该循环移位位数用于对序列集中的序列进行循环移位，该序列集中的任一个序列的周期自相关旁瓣幅度为0，该一个或多个设备中用于完成不同业务的设备所对应的循环移位位数不同；通信装置根据该配置信息确定通信装置对应的循环移位位数。其中，该序列配置信息用于确定前导码序列。可理解，上述序列集中的任一个序列的周期自相关旁瓣幅度为0，且周期自相关主瓣幅度不为0，示例性的，该序列集中的任一个序列可以是完备序列。
可理解，上述通信装置可以是UWB系统中除协调者(coordinator)外的任一通信装置。
结合第二方面，在一种可能的实现方式中，通信装置根据该配置信息确定通信装置对应的循环移位位数之后，该方法还包括：通信装置发送PPDU，该PPDU包含前导码序列，该前导码序列是该序列集中的目标序列经过循环移位后得到，该循环移位的位数等于通信装置对应的循环移位位数。
本申请通过对完备序列进行循环移位来构造前导码序列，并通过配置用于完成不同业务的设备所对应的循环移位位数不同，使得用于完成不同业务的设备的前导码序列之间存在零互相关区，从而提高UWB系统的抗干扰能力。同时，因为完备序列经过循环移位后仍然是完备序列，所以前导码序列也具有良好的周期自相关特性，从而可以提高UWB系统的同步性能。
结合第一方面或第二方面，在一种可能的实现方式中，上述一个或多个设备中用于共同完成一项业务的设备所对应的循环移位位数相同。
结合第一方面或第二方面，在一种可能的实现方式中，上述一个或多个设备属于M个设备分组，每个设备分组中的设备用于共同完成一项业务，一个设备分组对应一个循环移位位数，M为大于或等于1的整数。上述一个或多个设备对应上述序列集中的同一个序列，M个设备分组对应的M个循环移位位数用于对该序列集中的同一个序列进行循环移位。
M个设备分组分别对应的循环移位位数为：0,Z,2Z,3Z,...,(M-1)×Z；
其中，N表示上述一个或多个设备对应的序列的长度，表示N/M的向下取整。
本申请为M个设备分组配置的循环移位间隔足够大，以使零互相关区的长度较大，进一步减少互相关旁瓣带来的干扰，提高UWB系统的抗干扰能力。
结合第一方面或第二方面，在一种可能的实现方式中，上述序列配置信息还包括每个设备对应的序列长度，该序列长度用于确定序列集中用于循环移位的序列。示例性的，序列集中同一长度的序列只有一个，所以可以通过序列长度唯一确定一个序列。
结合第一方面或第二方面，在一种可能的实现方式中，上述序列配置信息还包括每个设备对应的序列标识，该序列标识用于标识序列集中的序列。
可选的，上述一个或多个设备中用于共同完成一项业务的设备所对应的序列标识相同，上述一个或多个设备中用于完成不同业务的设备所对应的序列标识不同。
第三方面，本申请实施例提供一种通信装置，该通信装置用于执行第一方面或第一方面的任意可能的实现方式中的方法。该通信装置包括具有执行第一方面或第一方面的任意可能的实现方式中的方法的单元。
第四方面，本申请实施例提供一种通信装置，该通信装置用于执行第二方面或第二方面的任意可能的实现方式中的方法。该通信装置包括具有执行第二方面或第二方面的任意可能的实现方式中的方法的单元。
在第三方面或第四方面中，上述通信装置可以包括收发单元和处理单元。对于收发单元和处理单元的具体描述还可以参考下文示出的装置实施例。上述第三方面到第四方面的有益效果可以参考前述第一方面和第二方面的相关描述，这里不赘述。
第五方面，本申请提供一种基于UWB的物理层协议数据单元(physical layer protocol data unit，PPDU)传输方法，该方法包括：通信装置生成并发送PPDU，该PPDU包含前导码序列，该前导码序列是序列集中的目标序列经过循环移位后生成，该序列集中的任一个序列的周期自相关旁瓣幅度为0。其中，该目标序列和循环移位的位数可以由收发双方协商确定。
本申请的通信装置从序列集中确定一个序列，对这个序列进行循环移位后生成前导码序列，因为这个序列的周期自相关旁瓣幅度为0，有效保证了前导码序列的自相关特性，使得UWB系统具有较好的同步性能；另外，经过不同循环移位生成的前导码序列之间可能存在零互相关区，使得选用到不同循环移位位数的多个通信装置之间因互相关旁瓣导致的干扰较小，从而提高UWB系统的抗干扰能力。
结合第五方面，在一种可能的实现方式中，该目标序列和循环移位的位数可以是协调者配置的。那么，通信装置生成PPDU之前，该方法还包括：通信装置接收配置信息，该配置信息包括通信装置的设备地址，该配置信息还包括序列配置信息，该序列配置信息包括以下一项或多项：通信装置对应的循环移位位数，通信装置对应的序列长度，通信装置对应的序列标识。该循环移位位数用于对该序列集中的该目标序列进行循环移位，该序列长度用于确定该序列集中该目标序列，该序列标识用于标识该序列集中的该目标序列。
第六方面，本申请提供一种基于UWB的PPDU传输方法，该方法包括：通信装置接收PPDU并对该PPDU进行处理，该PPDU包含前导码序列，该前导码序列是序列集中的目标序列经过循环移位后生成，该序列集中的任一个序列的周期自相关旁瓣幅度为0。其中，该目标序列和循环移位的位数可以由收发双方协商确定。
结合第五方面或第六方面，在一种可能的实现方式中，上述前导码序列是上述序列集中的目标序列经过循环移位后得到，或者上述前导码序列是上述序列集中的目标序列经过循环移位后再重复一次或多次后得到。
第七方面，本申请实施例提供一种通信装置，该通信装置用于执行第五方面或第五方面的任意可能的实现方式中的方法。该通信装置包括具有执行第五方面或第五方面的任意可能的实现方式中的方法的单元。
第八方面，本申请实施例提供一种通信装置，该通信装置用于执行第六方面或第六方面的任意可能的实现方式中的方法。该通信装置包括具有执行第六方面或第六方面的任意可能的实现方式中的方法的单元。
在第七方面或第八方面中，上述通信装置可以包括收发单元和处理单元。对于收发单元和处理单元的具体描述还可以参考下文示出的装置实施例。上述第七方面到第八方面的有益效果可以参考前述第五方面和第六方面的相关描述，这里不赘述。
第九方面，本申请提供一种信息交互方法，应用于UWB系统中，该方法包括：通信装置生成配置信息并以广播的形式发送该配置信息；该配置信息包括一个或多个设备的设备地 址，该配置信息还包括序列配置信息，该序列配置信息包括每个设备对应的抽样间隔，一个抽样间隔用于对序列集中的一个序列重复该抽样间隔次后进行抽样，该一个抽样间隔与该一个序列的长度互素。该序列集中的任一个序列的周期自相关旁瓣幅度为0，该一个或多个设备中用于完成不同业务的设备所对应的抽样间隔不同。
可理解，上述序列集中的任一个序列的周期自相关旁瓣幅度为0，且周期自相关主瓣幅度不为0，示例性的，该序列集中的任一个序列可以是完备序列。
还可理解，上述序列配置信息用于确定前导码序列。
还可理解，上述通信装置可以是UWB系统中的协调者(coordinator)。
因为对完备序列重复抽样间隔次后再抽样得到序列仍然是完备序列，所以本申请的前导码序列仍然是完备序列，有效保证了前导码序列的自相关特性，使得UWB系统具有较好的同步性能。
此外，在UWB感知场景中存在安全性问题，比如用于感知的前导码序列可以被任何设备接收并处理，通过监听合法发射者的前导码并测量信道冲击响应(channel impulsive response，CIR)，非授权的用户也能探测到目标(target)是否存在以及目标的具体位置，进而分析目标习惯，窃取用户隐私。
而本申请通过协调者配置抽样间隔(配置信息可以加密，以防止被非授权用户获知)，利用配置的抽样间隔对完备序列进行抽样生成前导码序列，可以使非授权用户无法测量CIR，从而提高UWB感知过程中的安全性。这是因为即使非授权用户已知完备序列，但非授权用户无法获知抽样间隔，那么非授权用户监听到前导码，利用该前导码与已知的完备序列做相关无法获得主瓣，即无法测量到CIR。
第十方面，本申请提供一种信息交互方法，应用于UWB系统中，该方法包括：通信装置接收配置信息，该配置信息包括一个或多个设备的设备地址，该配置信息还包括序列配置信息，该序列配置信息包括每个设备对应的抽样间隔；通信装置再根据该配置信息确定通信装置对应的抽样间隔。其中，一个抽样间隔用于对序列集中的一个序列重复所述抽样间隔次后进行抽样，该一个抽样间隔与该一个序列的长度互素。该序列集中的任一个序列的周期自相关旁瓣幅度为0，该一个或多个设备中用于完成不同业务的设备所对应的抽样间隔不同。
可理解，上述序列集中的任一个序列的周期自相关旁瓣幅度为0，且周期自相关主瓣幅度不为0，示例性的，该序列集中的任一个序列可以是完备序列。
还可理解，上述序列配置信息用于确定前导码序列。
还可理解，上述通信装置可以是UWB系统中除协调者(coordinator)外的任一通信装置。
结合第十方面，在一种可能的实现方式中，通信装置根据上述配置信息确定通信装置对应的抽样间隔之后，该方法还包括：通信装置发送PPDU，该PPDU包含前导码序列，该前导码序列是第一序列每隔第一抽样间隔个元素抽取一位后获得，该第一序列是上述序列集中的第二序列重复该第一抽样间隔次后获得，该第一抽样间隔为通信装置对应的抽样间隔，该第一抽样间隔与该第二序列的长度互素。
本申请通过对完备序列进行抽样生成前导码序列，可以使非授权用户无法测量CIR，从而提高UWB感知过程中的安全性。
结合第九方面或第十方面，在一种可能的实现方式中，上述一个或多个设备中用于共同完成一项业务的设备所对应的抽样间隔相同。
结合第九方面或第十方面，在一种可能的实现方式中，上述序列配置信息还包括每个设备对应的序列长度，该序列长度用于确定上述序列集中用于抽样的序列。示例性的，序列集 中同一长度的序列只有一个，所以可以通过序列长度唯一确定一个序列。
结合第九方面或第十方面，在一种可能的实现方式中，上述序列配置信息还包括每个设备对应的序列标识，该序列标识用于标识序列集中的序列。一个设备对应的抽样间隔与该设备对应的序列标识所标识的序列的长度互素。
可选的，上述一个或多个设备中用于共同完成一项业务的设备所对应的序列标识相同，上述一个或多个设备中用于完成不同业务的设备所对应的序列标识不同。
第十一方面，本申请实施例提供一种通信装置，该通信装置用于执行第九方面或第九方面的任意可能的实现方式中的方法。该通信装置包括具有执行第九方面或第九方面的任意可能的实现方式中的方法的单元。
第十二方面，本申请实施例提供一种通信装置，该通信装置用于执行第十方面或第十方面的任意可能的实现方式中的方法。该通信装置包括具有执行第十方面或第十方面的任意可能的实现方式中的方法的单元。
在第十一方面或第十二方面中，上述通信装置可以包括收发单元和处理单元。对于收发单元和处理单元的具体描述还可以参考下文示出的装置实施例。上述第十一方面到第十二方面的有益效果可以参考前述第九方面和第十方面的相关描述，这里不赘述。
第十三方面，本申请提供一种基于UWB的PPDU传输方法，该方法包括：通信装置生成并发送PPDU，该PPDU包含前导码序列，该前导码序列基于序列集中的第二序列和抽样间隔生成，该抽样间隔与该第二序列的长度互素，该序列集中的任一个序列的周期自相关旁瓣幅度为0。
可理解，上述序列集中的任一个序列的周期自相关旁瓣幅度为0，且周期自相关主瓣幅度不为0，示例性的，该序列集中的任一个序列可以是完备序列。
本申请的通信装置从序列集中确定一个完备序列，对这个完备序列进行抽样生成前导码序列，因为完备序列抽样后仍然是完备序列，有效保证了前导码序列的自相关特性，使得UWB系统具有较好的同步性能。
此外，在UWB感知场景中，本申请通过收发双方协商抽样间隔(协商过程可以加密，以防止被非授权用户获知)，并利用协商的抽样间隔对完备序列进行抽样生成前导码序列，还可以使非授权用户无法测量CIR，从而提高UWB感知过程中的安全性。这是因为即使非授权用户已知完备序列，但非授权用户无法获知抽样间隔，那么非授权用户监听到前导码，利用该前导码与已知的完备序列做自相关无法获得主瓣，即无法测量到CIR。
结合第十三方面，在一种可能的实现方式中，通信装置生成PPDU之前，该方法还包括：通信装置接收配置信息，该配置信息包括该通信装置的设备地址，该配置信息还包括序列配置信息，该序列配置信息包括以下一项或多项：该通信装置对应的该抽样间隔，该通信装置对应的序列长度，该通信装置对应的序列标识。该抽样间隔用于对该序列集中的第二序列重复该抽样间隔次后进行抽样，该序列长度用于确定该序列集中用于抽样的第二序列，该序列标识用于标识该序列集中的第二序列。
第十四方面，本申请提供一种基于UWB的PPDU传输方法，该方法包括：通信装置接收PPDU，该PPDU包含前导码序列，该前导码序列基于序列集中的第二序列和抽样间隔生成，该抽样间隔与该第二序列的长度互素，该序列集中的任一个序列的周期自相关旁瓣幅度为0；通信装置对该PPDU进行处理。
可理解，上述序列集中的任一个序列的周期自相关旁瓣幅度为0，且周期自相关主瓣幅 度不为0，示例性的，该序列集中的任一个序列可以是完备序列。
结合第十三方面或第十四方面，在一种可能的实现方式中，上述前导码序列是第一序列每隔该抽样间隔个元素抽取一位后获得，该第一序列是该序列集中的第二序列重复该抽样间隔次后获得。
第十五方面，本申请实施例提供一种通信装置，该通信装置用于执行第十三方面或第十三方面的任意可能的实现方式中的方法。该通信装置包括具有执行第十三方面或第十三方面的任意可能的实现方式中的方法的单元。
第十六方面，本申请实施例提供一种通信装置，该通信装置用于执行第十四方面或第十四方面的任意可能的实现方式中的方法。该通信装置包括具有执行第十四方面或第十四方面的任意可能的实现方式中的方法的单元。
在第十五方面或第十六方面中，上述通信装置可以包括收发单元和处理单元。对于收发单元和处理单元的具体描述还可以参考下文示出的装置实施例。上述第十五方面到第十六方面的有益效果可以参考前述第十三方面和第十四方面的相关描述，这里不赘述。
第十七方面，本申请提供一种通信装置，该通信装置包括处理器，用于执行上述第一方面、上述第九方面、或其中任一方面的任意可能的实现方式所示的方法。或者，该处理器用于执行存储器中存储的程序，当该程序被执行时，上述第一方面、上述第九方面、或其中任一方面的任意可能的实现方式所示的方法被执行。
结合第十七方面，在一种可能的实现方式中，存储器位于上述通信装置之外。
结合第十七方面，在一种可能的实现方式中，存储器位于上述通信装置之内。
本申请中，处理器和存储器还可以集成于一个器件中，即处理器和存储器还可以被集成在一起。
结合第十七方面，在一种可能的实现方式中，通信装置还包括收发器，该收发器，用于发送信息。
第十八方面，本申请提供一种通信装置，该通信装置包括处理器，用于执行上述第二方面、上述第十方面、或其中任一方面的任意可能的实现方式所示的方法。或者，该处理器用于执行存储器中存储的程序，当该程序被执行时，上述第二方面、上述第十方面、或其中任一方面的任意可能的实现方式所示的方法被执行。
结合第十八方面，在一种可能的实现方式中，存储器位于上述通信装置之外。
结合第十八方面，在一种可能的实现方式中，存储器位于上述通信装置之内。
本申请中，处理器和存储器还可以集成于一个器件中，即处理器和存储器还可以被集成在一起。
结合第十八方面，在一种可能的实现方式中，通信装置还包括收发器，该收发器，用于接收信息。
第十九方面，本申请提供一种通信装置，该通信装置包括处理器，用于执行上述第五方面、上述第十三方面或其中任一方面的任意可能的实现方式所示的方法。或者，该处理器用于执行存储器中存储的程序，当该程序被执行时，上述第五方面、上述第十三方面或其中任一方面的任意可能的实现方式所示的方法被执行。
结合第十九方面，在一种可能的实现方式中，存储器位于上述通信装置之外。
结合第十九方面，在一种可能的实现方式中，存储器位于上述通信装置之内。
本申请中，处理器和存储器还可以集成于一个器件中，即处理器和存储器还可以被集成 在一起。
结合第十九方面，在一种可能的实现方式中，通信装置还包括收发器，该收发器，用于发送PPDU。
第二十方面，本申请提供一种通信装置，该通信装置包括处理器，用于执行上述第六方面、上述第十四方面、或其中任一方面的任意可能的实现方式所示的方法。或者，该处理器用于执行存储器中存储的程序，当该程序被执行时，上述第六方面、上述第十四方面、或其中任一方面的任意可能的实现方式所示的方法被执行。
结合第二十方面，在一种可能的实现方式中，存储器位于上述通信装置之外。
结合第二十方面，在一种可能的实现方式中，存储器位于上述通信装置之内。
本申请中，处理器和存储器还可以集成于一个器件中，即处理器和存储器还可以被集成在一起。
结合第二十方面，在一种可能的实现方式中，通信装置还包括收发器，该收发器，用于接收PPDU。
第二十一方面，本申请提供一种通信装置，该通信装置包括逻辑电路和接口，该逻辑电路和该接口耦合。
一种设计中，逻辑电路，用于生成配置信息，该配置信息包括一个或多个设备的设备地址，该配置信息还包括序列配置信息，该序列配置信息包括每个设备对应的循环移位位数，该循环移位位数用于对序列集中的序列进行循环移位，该序列集中的任一个序列的周期自相关旁瓣幅度为0，该一个或多个设备中用于完成不同业务的设备所对应的循环移位位数不同；接口，用于输出该配置信息。
另一种设计中，逻辑电路，用于生成配置信息，该配置信息包括一个或多个设备的设备地址，该配置信息还包括序列配置信息，该序列配置信息包括每个设备对应的抽样间隔，一个抽样间隔用于对序列集中的一个序列重复该抽样间隔次后进行抽样，该一个抽样间隔与该一个序列的长度互素。该序列集中的任一个序列的周期自相关旁瓣幅度为0，该一个或多个设备中用于完成不同业务的设备所对应的抽样间隔不同；接口，用于输出该配置信息。
第二十二方面，本申请提供一种通信装置，该通信装置包括逻辑电路和接口，该逻辑电路和该接口耦合。
一种设计中，接口，用于输入配置信息，该配置信息还包括序列配置信息，该序列配置信息包括每个设备对应的循环移位位数，该循环移位位数用于对序列集中的序列进行循环移位，该序列集中的任一个序列的周期自相关旁瓣幅度为0，该一个或多个设备中用于完成不同业务的设备所对应的循环移位位数不同；逻辑电路，用于根据该配置信息确定通信装置对应的循环移位位数。
另一种设计中，接口，用于输入配置信息，该配置信息包括一个或多个设备的设备地址，该配置信息还包括序列配置信息，该序列配置信息包括每个设备对应的抽样间隔，一个抽样间隔用于对序列集中的一个序列重复该抽样间隔次后进行抽样，该一个抽样间隔与该一个序列的长度互素；该序列集中的任一个序列的周期自相关旁瓣幅度为0，该一个或多个设备中用于完成不同业务的设备所对应的抽样间隔不同；逻辑电路，用于根据该配置信息确定通信装置对应的抽样间隔。
第二十三方面，本申请提供一种通信装置，该通信装置包括逻辑电路和接口，该逻辑电路和该接口耦合。
一种设计中，逻辑电路，用于生成PPDU，该PPDU包含前导码序列，该前导码序列是序列集中的目标序列经过循环移位后生成，该序列集中的任一个序列的周期自相关旁瓣幅度为0；接口，用于输出该PPDU。
另一种设计中，逻辑电路，用于生成PPDU，该PPDU包含前导码序列，该前导码序列基于序列集中的第二序列和抽样间隔生成，该抽样间隔与该第二序列的长度互素，该序列集中的任一个序列的周期自相关旁瓣幅度为0；接口，用于输出该PPDU。
第二十四方面，本申请提供一种通信装置，该通信装置包括逻辑电路和接口，该逻辑电路和该接口耦合。
一种设计中，接口，用于输入PPDU，该PPDU包含前导码序列，该前导码序列是序列集中的目标序列经过循环移位后生成，该序列集中的任一个序列的周期自相关旁瓣幅度为0；逻辑电路，用于对该PPDU进行处理。
另一种设计中，接口，用于输入PPDU，该PPDU包含前导码序列，该前导码序列基于序列集中的第二序列和抽样间隔生成，该抽样间隔与该第二序列的长度互素，该序列集中的任一个序列的周期自相关旁瓣幅度为0；逻辑电路，用于对该PPDU进行处理。
第二十五方面，本申请实施例提供一种计算机可读存储介质，该计算机可读存储介质用于存储计算机程序，当其在计算机上运行时，使得上述第一方面、上述第九方面、或其中任一方面的任意可能的实现方式所示的方法被执行。
第二十六方面，本申请实施例提供一种计算机可读存储介质，该计算机可读存储介质用于存储计算机程序，当其在计算机上运行时，使得上述第二方面、上述第十方面、或其中任一方面的任意可能的实现方式所示的方法被执行。
第二十七方面，本申请实施例提供一种计算机可读存储介质，该计算机可读存储介质用于存储计算机程序，当其在计算机上运行时，使得上述第五方面、上述第十三方面、或其中任一方面的任意可能的实现方式所示的方法被执行。
第二十八方面，本申请实施例提供一种计算机可读存储介质，该计算机可读存储介质用于存储计算机程序，当其在计算机上运行时，使得上述第六方面、上述第十四方面、或其中任一方面的任意可能的实现方式所示的方法被执行。
第二十九方面，本申请实施例提供一种计算机程序产品，该计算机程序产品包括计算机程序或计算机代码，当其在计算机上运行时，使得上述第一方面、上述第九方面、或其中任一方面的任意可能的实现方式所示的方法被执行。
第三十方面，本申请实施例提供一种计算机程序产品，该计算机程序产品包括计算机程序或计算机代码，当其在计算机上运行时，使得上述第二方面、上述第十方面、或其中任一方面的任意可能的实现方式所示的方法被执行。
第三十一方面，本申请实施例提供一种计算机程序产品，该计算机程序产品包括计算机程序或计算机代码，当其在计算机上运行时，使得上述第五方面、上述第十三方面、或其中任一方面的任意可能的实现方式所示的方法被执行。
第三十二方面，本申请实施例提供一种计算机程序产品，该计算机程序产品包括计算机程序或计算机代码，当其在计算机上运行时，使得上述第六方面、上述第十四方面、或其中任一方面的任意可能的实现方式所示的方法被执行。
第三十三方面，本申请实施例提供一种计算机程序，该计算机程序在计算机上运行时，上述第一方面、上述第九方面、或其中任一方面的任意可能的实现方式所示的方法被执行。
第三十四方面，本申请实施例提供一种计算机程序，该计算机程序在计算机上运行时，上述第二方面、上述第十方面、或其中任一方面的任意可能的实现方式所示的方法被执行。
第三十五方面，本申请实施例提供一种计算机程序，该计算机程序在计算机上运行时，上述第五方面、上述第十三方面、或其中任一方面的任意可能的实现方式所示的方法被执行。
第三十六方面，本申请实施例提供一种计算机程序，该计算机程序在计算机上运行时，上述第六方面、上述第十四方面、或其中任一方面的任意可能的实现方式所示的方法被执行。
第三十七方面，本申请实施例提供一种无线通信系统，该无线通信系统包括：用于执行上述第一方面、上述第九方面、或其中任一方面的任意可能的实现方式所示方法的通信装置，和用于执行上述第二方面、上述第十方面、或其中任一方面的任意可能的实现方式所示方法的通信装置。
第三十八方面，本申请实施例提供一种无线通信系统，该无线通信系统包括：用于执行上述第五方面、上述第十三方面、或其中任一方面的任意可能的实现方式所示方法的通信装置，和用于执行上述第六方面、上述第十四方面、或其中任一方面的任意可能的实现方式所示方法的通信装置。
上述各个方面达到的技术效果可以相互参考或参考下文所示的方法实施例中的有益效果，此处不再重复赘述。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍。
图1是本申请实施例提供的无线通信系统的一结构示意图；
图2是本申请实施例提供的无线通信系统的另一结构示意图；
图3是本申请实施例提供的PPDU的帧结构示意图；
图4是本申请实施例提供的SYNC字段包含的符号结构示意图；
图5是本申请实施例提供的一种Ipatov序列的自相关仿真结果示意图；
图6是本申请实施例提供的两个不同Ipatov序列的互相关仿真结果示意图；
图7是本申请实施例提供的UWB信号分段传输的示意图；
图8是本申请实施例提供的信息交互方法的一种流程示意图；
图9是本申请实施例提供的M个设备分组的前导码序列示意图；
图10a是本申请实施例提供的2个设备分组的前导码序列示意图；
图10b是本申请实施例提供的4个设备分组的前导码序列示意图；
图11是本申请实施例提供的零互相关区的示意图；
图12是本申请实施例提供的基于UWB的PPDU传输方法的一种流程示意图；
图13是本申请实施例提供的信息交互方法的另一种流程示意图；
图14是本申请实施例提供的基于UWB的PPDU传输方法的另一种流程示意图；
图15是本申请实施例提供的通信装置的一结构示意图；
图16是本申请实施例提供的通信装置1000的结构示意图；
图17是本申请实施例提供的通信装置的另一结构示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述。
本申请中的术语“第一”和“第二”等仅用于区别不同对象，而不是用于描述特定顺序。此外，术语“包括”和“具有”以及它们的任何变形，意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、系统、产品或设备等，没有限定于已列出的步骤或单元，而是可选地还包括没有列出的步骤或单元等，或可选地还包括对于这些过程、方法、产品或设备等固有的其它步骤或单元。
在本申请的描述中，“至少一个(项)”是指一个或者多个，“多个”是指两个或两个以上，“至少两个(项)”是指两个或三个及三个以上。另外，“和/或”用于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：只存在A，只存在B以及同时存在A和B三种情况，其中A，B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。“以下至少一项(个)”或其类似表达，是指这些项中的任意组合。例如，a，b或c中的至少一项(个)，可以表示：a，b，c，“a和b”，“a和c”，“b和c”，或“a和b和c”。
本申请中，“示例性的”或者“例如”等词用于表示作例子、例证或说明。本申请中被描述为“示例性的”、“举例来说”或者“例如”的任何实施例或设计方案不应被解释为比其他实施例或设计方案更优选或更具优势。确切而言，使用“示例性的”、“举例来说”或者“例如”等词旨在以具体方式呈现相关概念。
本申请中对于使用单数表示的元素旨在用于表示“一个或多个”，而并非表示“一个且仅一个”，除非有特别说明。
应理解，在本申请各实施例中，根据A确定B并不意味着仅仅根据A确定B，还可以根据A和/或其它信息确定B。
本申请提供的技术方案可以适用于基于UWB技术的无线个人局域网(wireless personal area network，WPAN)。如本申请提供的方法可以适用于电气及电子工程师学会(institute of electrical and electronics engineers，IEEE)802.15系列协议，例如802.15.4a协议、802.15.4z协议或802.15.4ab协议，或者未来某代UWB WPAN标准中等，这里不再一一列举。本申请提供的方法还可以应用于各类通信系统，例如，可以是物联网(internet of things，IoT)系统、车联网(vehicle to X，V2X)、窄带物联网(narrow band internet of things，NB-IoT)系统，应用于车联网中的设备，物联网(IoT，internet of things)中的物联网节点、传感器等，智慧家居中的智能摄像头，智能遥控器，智能水表电表，以及智慧城市中的传感器等。本申请提供的方法还可以适用于LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、通用移动通信系统(universal mobile telecommunication system，UMTS)、全球互联微波接入(worldwide interoperability for microwave access，WiMAX)通信系统、长期演进(long term evolution，LTE)系统，也可以是第五代(5th-generation，5G)通信系统、第六代(6th-generation，6G)通信系统等。
UWB技术是一种新型的无线通信技术。它利用纳秒级的非正弦波窄脉冲传输数据，通过对具有很陡上升和下降时间的冲激脉冲进行调制，因此其所占用的频谱范围很宽，使信号具有吉赫(GHz)量级的带宽。UWB使用的带宽通常在1GHz以上。因为UWB系统不需要产生正弦载波信号，可以直接发射冲激序列，所以UWB系统具有很宽的频谱和很低的平均功率，UWB无线通信系统具有多径分辨能力强、功耗低、保密性强等优点，有利于与其他系统共存，从而提高频谱利用率和系统容量。另外，在短距离的通信应用中，UWB发射机的发射功率通常可做到低于1mW(毫瓦)，从理论上来说，UWB信号所产生的干扰仅相当于白噪声。 这样有助于超宽带与现有窄带通信之间的良好共存。因此，UWB系统可以实现与窄带(narrowband，NB)通信系统同时工作而互不干扰。本申请提供的方法可以由无线通信系统中的通信装置实现。一个通信装置中，实现UWB系统功能的装置或芯片可以被称为UWB模块，实现窄带通信系统功能的装置或芯片可以被称为窄带通信模块。UWB模块和窄带通信模块可以为不同的装置或芯片，当然UWB模块和窄带通信模块也可以集成在一个装置或芯片上，本申请实施例不限制UWB模块和窄带通信模块在通信装置中的实现方式。本申请中的通信装置包括UWB模块，可选的还包括窄带通信模块。
虽然本申请实施例主要以WPAN为例，比如以应用于IEEE 802.15系列标准的网络为例进行说明。本领域技术人员容易理解，本申请涉及的各个方面可以扩展到采用各种标准或协议的其它网络。例如，无线局域网(wireless local area networks，WLAN)、蓝牙(BLUETOOTH),高性能无线LAN(high performance radio LAN，HIPERLAN)(一种与IEEE 802.11标准类似的无线标准，主要在欧洲使用)以及广域网(WAN)或其它现在已知或以后发展起来的网络。因此，无论使用的覆盖范围和无线接入协议如何，本申请提供的各种方面可以适用于任何合适的无线网络。可选地，本申请实施例中的通信装置可以为支持802.15.4a和802.15.4z、以及现在正在讨论中的IEEE 802.15.4ab或后续版本等多种WPAN制式的设备。
本申请提供的方法可以由无线通信系统中的通信装置实现。该通信装置可以是UWB系统中涉及的装置。例如，该通信装置可以包括但不限于支持UWB技术的通信服务器、路由器、交换机、网桥、计算机、手机等。又例如，该通信装置可以包括用户设备(user equipment，UE)，该用户设备可以包括支持UWB技术的各种手持设备、车载设备(如汽车或安装于汽车上的部件等)、可穿戴设备、物联网(internet of things，IoT)设备、计算设备或连接到无线调制解调器的其它处理设备等，这里不再一一列举。又例如，该通信装置可以包括中心控制点，如个人局域网(personal area network，PAN)或PAN协调者等。该PAN协调者或PAN可以是手机、车载设备、锚点(Anchor)、标签(tag)或智能家居等。又例如，该通信装置可以包括芯片，该芯片可以设置于通信服务器、路由器、交换机或终端设备中等，这里不再一一列举。可理解，以上关于通信装置的说明适用于本申请中的第一通信装置和第二通信装置。
在本申请实施例中，上述通信装置可以包括硬件层、运行在硬件层之上的操作系统层，以及运行在操作系统层上的应用层。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。该操作系统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系统，例如，Linux操作系统、Unix操作系统、Android操作系统、iOS操作系统或windows操作系统等。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。
示例性的，参见图1，图1是本申请实施例提供的无线通信系统的一结构示意图。如图1所示，该无线通信系统是一种星型拓扑结构，该种结构中一个中心控制节点(如图1中的PAN协调者)可以与一个或多个其他设备进行数据通信。参见图2，图2是本申请实施例提供的无线通信系统的另一结构示意图。如图2所示，该无线通信系统是一种点对点拓扑结构，该种结构中，中心控制节点(如图2中的PAN协调者)可以与一个或多个其他设备进行数据通信，其他不同设备之间也可以互相进行数据通信。在图1和图2中，全功能设备(full function device)和低功能设备(reduced function device)都可以理解为本申请所示的通信装置。其中， 全功能设备和低功能设备是相对而言的，如低功能设备不能是PAN协调者(coordinator)。又如低功能设备与全功能设备相比，该低功能设备可以没有协调能力或通信速率相对全功能设备较低等。可理解，图2所示的PAN协调者仅为示例，图2所示的其他三个全功能设备也可以作为PAN协调者，这里不再一一示出。还可理解，本申请所示的全功能设备和低功能设备仅为通信装置的一种示例，但凡能够实现本申请所提供的基于UWB的PPDU传输方法的装置，均属于本申请的保护范围。
在IEEE 802.15.4a和IEEE 802.15.4z标准中，UWB信号的PPDU结构如图3所示，图3是本申请实施例提供的PPDU的帧结构示意图。如图3所示，示出了4种PPDU的结构。该PPDU包含以下一项或多项：同步(synchronization，SYNC)字段、帧开始分隔符(start-of-frame delimiter，SFD)字段、物理层头(physical layer header，PHR)、物理承载字段(PHY payload field)、或加扰时间戳序列(scrambled timestamp sequence，STS)。示例性的，接收端根据同步(SYNC)字段进行PPDU检测和同步；PHR携带一些物理层的指示信息，如调制编码信息或PPDU长度信息等，协助接收端正确解调数据；物理承载字段用于携带数据。
同步(SYNC)字段可以包含多个重复的符号，该符号由前导码序列生成。参见图4，图4是本申请实施例提供的SYNC字段包含的符号结构示意图。如图4所示，Ci(0),Ci(1),...,Ci(K-1)表示长度为K的前导码序列。该前导码序列的长度可以包括31、91或127。例如，前导码序列可以是如802.15.4a或802.15.4z协议中的任一种由{–1、0、+1}三种值构成的三元序列(也可以称为Ipatov序列)。示例性的，长度为31、91或127的三元序列的具体内容可以参见802.15.4a和802.15.4z标准，这里不展开说明。
示例性的，以802.15.4a标准中长度为31的Ipatov序列为例，其周期自相关特性的仿真结果如图5所示，图5是本申请实施例提供的一种Ipatov序列的自相关仿真结果示意图。如图5所示，长度为31的Ipatov序列在原点处有值(即原点处的纵坐标不为0)，在横坐标的其他地方都是0(即其他非原点处的纵坐标为0)。也就是说，长度为31的Ipatov序列周期自相关的主瓣幅度为16(也可以理解为周期自相关的峰值为16)，周期自相关的旁瓣幅度为0。可理解，图5所示的横坐标表示时间移位(time shift)，纵坐标表示周期自相关(periodic autocorrelation)的幅度。图5所示的横坐标还可以理解为是元素或位等，本申请实施例对于周期自相关函数的仿真中涉及的横坐标的解释不作限定。由于自相关可以理解为一个信号与其自身在不同时间点的互相关，因此横坐标中的正轴取值和负轴取值可以由Ipatov序列的长度确定。
本申请将周期自相关的主瓣幅度不为0，且周期自相关的旁瓣幅度为0的序列称为完备序列(Perfect Sequence)。
可理解，对于一个长度为N序列x(n)，其周期自相关函数Rx(τ)定义如下：
其中，(n+τ)mod N表示(n+τ)除以N的余数，下文不再赘述。
接收端可以利用序列的自相关特性，使用相同的序列与接收到的UWB信号做相关处理，比如相关运算，利用相关处理的结果进行同步等操作。
示例性的，以802.15.4a标准中长度为127的两个Ipatov序列为例，其周期互相关特性的仿真结果如图6所示，图6是本申请实施例提供的两个不同Ipatov序列的互相关仿真结果示意图。如图6，示出了802.15.4z标准中编码索引(codeindex)为9和10的编码序列(codesequence) 进行互相关的仿真结果。由图6可以看出，长度为127的两个不同Ipatov序列做周期互相关，不存在零相关区，其旁瓣幅度大多数为8或-8，绝对值最大的旁瓣幅度为-20。当互相关旁瓣幅度较大时，可能会导致Ipatov序列的自相关主瓣判断出错，即将某个互相关旁瓣判断为这个Ipatov序列的自相关主瓣(比如可能会将图6中互相关旁瓣幅度为-20的位置判断为Ipatov序列的自相关主瓣所在的位置)，从而导致这个Ipatov序列的抗干扰性能差。可理解，图6所示的横坐标表示周期自相关函数Rx(τ)和周期互相关函数Rx,y(τ)中τ的取值，x，y分别表示两个Ipatov序列，纵坐标表示两个Ipatov序列的周期自相关和周期互相关(auto/crosscorrelationof two Ipatovsequences)的幅度。
可理解，对于长度为N的序列x(n)和y(n)，其周期互相关函数Rx,y(τ)定义如下：
综上，由上述图5和图6可知，虽然802.15.4a和802.15.4z中定义的前导码序列拥有完美的周期自相关特性，但是不同前导码序列之间的互相关旁瓣幅度较大，将导致前导码序列的抗干扰性能差。
此外，由于超宽带系统的带宽很大，为了减小其在工作时对其他设备的干扰，美国联邦通信委员会(FCC)对UWB信号的功率谱密度进行了严格的限制，根据美国联邦规则汇编(CFR Code of Federal Regulations)，主要有以下两个规则：
规则一：发射的UWB信号的最大功率谱密度(power spectral density，PSD)在一毫秒内的平均值不能大于41.3dBm每兆赫兹。
规则二：发射的UWB信号在任何50MHz带宽内的最大功率不能超过1毫瓦。
虽然规则一限制了UWB信号在1毫秒内的发射总能量(在500MHz带宽下不超过37nJ(纳焦))，但可以通过将能量集中在更短的时间内发射出去来提高发射信号的瞬时功率，从而增大UWB信号的覆盖范围和提高接收端接收信号的信噪比。基于此，在部分需要增大发射功率的场景下，一种UWB信号的传输方法如图7所示，图7是本申请实施例提供的UWB信号分段传输的示意图。如图7所示，发射端将要发射的UWB信号拆分为多个分段(fragment)，每一个UWB分段(UWB fragment)信号的时间长度小于1毫秒，每个毫秒内只发送其中一个UWB分段。每个UWB分段是一个PPDU。对应于UWB信号的分段传输，UWB分段信号的PPDU帧结构可以只包含同步(synchronization，SYNC)字段，可选的包括帧开始分隔符(start-of-frame delimiter，SFD)字段。该UWB分段信号的PPDU帧结构不包含数据部分。
可理解的，分段传输可以增加UWB信号的瞬时功率，从而可以增大UWB信号的覆盖范围，提高接收端接收信号的信噪比。
因为802.15.4a和802.15.4z标准中UWB信号的帧结构(如前述图3所示)不存在只包含同步(SYNC)字段的情况，所以如果将802.15.4a和802.15.4z标准中定义的前导码序列(如长度为31、91或127的Ipatov序列)应用于图7所示的UWB分段(UWB fragment)信号中，将会对仅支持802.15.4a或802.15.4z标准的设备(或者说现有UWB设备)产生严重干扰。这是因为现有UWB设备接收到能识别的前导码序列之后，没有后续的信号可以接收。
可理解，UWB设备可以指支持UWB技术(如802.15系列协议)的通信装置，下文不再赘述。
本申请实施例提供一种信息交互方法及相关装置，通过为用于完成不同业务的设备分配不同的循环移位位数，以使这些设备对完备序列(Perfect Sequence)进行不同循环移位后生 成的前导码序列之间的互相关旁瓣幅度小，从而提高UWB系统的抗干扰能力，并可以避免对现有UWB设备的干扰(因为现有UWB设备无法识别本申请的前导码序列)。另外，因为完备序列(Perfect Sequence)具有良好的周期自相关特性，所以UWB系统也具有较好的同步性能。
下面将结合更多的附图对本申请提供的技术方案进行详细说明。
为便于清楚描述本申请的技术方案，本申请通过多个实施例进行阐述，具体参见下文。本申请中，除特殊说明外，各个实施例或实现方式之间相同或相似的部分可以互相参考。在本申请中各个实施例、以及各实施例中的各个实施方式/实施方法/实现方法中，如果没有特殊说明以及逻辑冲突，不同的实施例之间、以及各实施例中的各个实施方式/实施方法/实现方法之间的术语和/或描述具有一致性、且可以相互引用，不同的实施例、以及各实施例中的各个实施方式/实施方法/实现方法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、实施方式、实施方法、或实现方法。以下所述的本申请实施方式并不构成对本申请保护范围的限定。
本申请中的通信装置不仅可以支持802.15系列协议，如802.15.4ab制式或者802.15.4ab的下一代制式等；还可以支持其他标准协议(比如802.11系列协议)，如802.11ax、802.11ac、802.11n、802.11g、802.11b、802.11a、802.11be及其下一代等802.11家族的多种无线局域网(wireless local area networks，WLAN)制式。
实施例一
本申请实施例一主要介绍协调者为用于完成不同业务的设备配置不同的循环移位位数，以使这些设备基于配置的循环移位位数和三元完备序列(Perfect Ternary Sequence)生成的前导码序列之间的互相关旁瓣幅度小，从而提高UWB系统的抗干扰能力。
参见图8，图8是本申请实施例提供的信息交互方法的一种流程示意图。该方法中所涉及的第第一通信装置可以是前述图1或图2中的PAN协调者，第二通信装置可以是前述图1或图2中除PAN协调者外的任一设备。如图8所示，该信息交互方法包括但不限于以下步骤：
S101，第一通信装置生成配置信息，该配置信息包括一个或多个设备的设备地址，该配置信息还包括序列配置信息，该序列配置信息包括每个设备对应的循环移位位数，该循环移位位数用于对序列集中的序列进行循环移位，该序列集中的任一个序列的周期自相关旁瓣幅度为0，该一个或多个设备中用于完成不同业务的设备所对应的循环移位位数不同。
S102，第一通信装置发送该配置信息。示例性的，第一通信装置以广播的方式发送该配置信息。
相应的，一个或多个通信装置接收该配置信息。
可理解，设备地址用于标识设备。本申请实施例中的设备地址可以是完整的地址，比如完整的MAC地址，也可以是完整地址中的一部分，比如MAC地址的前16位或前8位；本申请实施例不限制设备地址的实现方式。在一些实施例中，上述配置信息包括的设备地址也可以替换成设备标识。
可选的，上述序列配置信息包括上述一个或多个设备中每个设备对应的循环移位位数，该循环移位位数用于对序列集中的序列进行循环移位。该序列配置信息用于确定前导码序列，示例性的，前导码序列可以是序列集中的序列进行循环移位后得到，或者循环移位后再重复一次或多次后得到。可理解，如果循环移位位数为0，则前导码序列即为序列集中的序列，或这个序列重复一次或多次。
其中，上述序列集中的任一个序列的周期自相关旁瓣幅度为0，且周期自相关主瓣幅度不为0，即该序列集中任一个序列的周期自相关函数R(τ)＝0，对于任何的τ不等于0均成立。也就是说，该序列集中的任一个序列是完备序列。本申请实施例的序列集中各个序列的具体内容参见下文描述，这里不详述。可理解，完备序列通常由1，-1以及0中的至少两种元素构成。完备序列经过循环移位后仍然是完备序列。所以，本申请实施例中的前导码序列也是完备序列。
可选的，上述一个或多个设备中用于完成不同业务的设备所对应的循环移位位数不同，换句话说，执行不同业务的设备所对应的循环移位位数不相同；该一个或多个设备中用于共同完成一项业务的设备所对应的循环移位位数相同，换句话说，多个设备可以对应一个循环移位位数。
可选的，上述一个或多个设备属于M个设备分组，每个设备分组包括至少一个设备，每个设备分组中的设备用于共同完成一项业务。一个设备分组对应一个循环移位位数，M个设备分组对应的M个循环移位位数各不相同。M为大于或等于1的整数。上述一个或多个设备对应序列集中的同一个序列，该M个设备分组对应的M个循环移位位数用于对序列集中的同一个序列进行循环移位。这个序列的长度为N。示例性的，M个设备分组分别对应的循环移位位数为：0,Z,2Z,3Z,...,(M-1)×Z。其中，Z满足以下条件：
举例来说，以序列集中的任一个序列是Ipatov序列为例，M个设备分组对应的M个循环移位位数用于对序列集中的同一个Ipatov序列进行循环移位。这M个设备分组的前导码序列如图9所示，图9是本申请实施例提供的M个设备分组的前导码序列示意图。如图9，第1个设备分组的前导码序列是未经循环移位(或者循环移位位数为0)的Ipatov序列重复一次或多次，第2个设备分组的前导码序列是Ipatov序列循环移Z位(Ipatov cycle shift by Z positions)后重复一次或多次，第3个设备分组的前导码序列是Ipatov序列循环移2Z位(Ipatov cycle shift by 2*Z positions)后重复一次或多次，以此类推，第M个设备分组的前导码序列是Ipatov序列循环移(M-1)×Z位(Ipatov cycle shift by(M-1)*Z positions)后重复一次或多次。
此时，图9中相邻两个设备分组(比如第i个和第i+1个设备分组，i的取值为1,2,3,...,(M-1))的前导码序列之间存在零互相关区，该零互相关区的长度为
可理解，在零互相关区的长度Z不变的情况下，N越大，M就越大，也就是说支持的设备数(即用户数)越多。
再举例来说，以M等于2和4为例，2个设备分组的前导码序列如图10a所示，图10a是本申请实施例提供的2个设备分组的前导码序列示意图；4个设备分组的前导码序列如图10b所示，图10b是本申请实施例提供的4个设备分组的前导码序列示意图。如图10a，第1个设备分组的前导码序列是长度为N的Ipatov序列循环移0位(或者未经循环移位)后重复一次或多次，第2个设备分组的前导码序列是Ipatov序列循环移位后重复一次或多次。此时，图10a中2个设备分组的前导码序列之间的零互相关区的长度为如图10b，第1个设备分组的前导码序列是长度为N的Ipatov序列循环移0位(或者未经循环移位)后重复一次或多次，第2个设备分组的前导码序列是Ipatov序列循环移位后重复一次或多次，第3个设备分组的前导码序列是Ipatov序列循环移位后重复一次或多次，第4个设备分组的前导码序列是Ipatov序列循环移位后重复一次或多次。此时，图10b中相邻两个设备分组(比如第i个和第i+1个设备分组，i的取值为1,2,3)的前导码序列之间的零互相关区的长度为
可理解，图9、图10a以及图10b虽然以序列集中的序列是Ipatov序列为例，但本申请实施例不限定序列集中的序列是某种具体的完备序列。
可理解的，零互相关区可以理解为在一定时间移位内不存在互相关旁瓣，该一定的时间移位就是零互相关区的长度Z。也就是说，存在连续的τ取值，在这些τ取值下，周期互相关函数Rx,y(τ)为0，这些连续的τ取值称为零互相关区。参见图11，图11是本申请实施例提供的零互相关区的示意图。如图11所示，自相关主瓣与互相关第一个旁瓣之间的零幅度值区域即为零互相关区。图11的横坐标表示周期自相关函数Rx(τ)和周期互相关函数Rx,y(τ)中τ的取值，x，y分别表示两个序列；纵坐标表示周期自相关和周期互相关的幅度。而零自相关区可理解为除在原点处的自相关幅度不为0外，存在其它连续的时间移位上，其自相关幅度为0。也就是说，存在连续的τ取值，在这些τ取值下，周期自相关函数Rx(τ)为0，这些连续的τ取值称为零自相关区。
可选的，上述一个或多个设备中用于完成不同业务的设备所对应的完备序列可以相同，也可以不相同，本申请实施例不做限制。
可选的，在实际应用中，用于共同完成一项业务的多个设备对同一个序列进行循环移位时，循环移位的位数可以不相同；用于共同完成一项业务的多个设备对不同序列进行循环移位时，循环移位的位数可以相同，也可以不相同。
可选的，上述序列配置信息还包括每个设备对应的序列长度，该序列长度用于确定序列集中用于循环移位的序列。示例性的，序列集中同一长度的序列只有一个，所以可以通过序列长度唯一确定一个序列。
可选的，上述序列配置信息还包括每个设备对应的序列标识，该序列标识用于标识序列集中的序列。上述一个或多个设备中用于共同完成一项业务的设备所对应的序列标识相同，上述一个或多个设备中用于完成不同业务的设备所对应的序列标识不同。
S103，第二通信装置根据该配置信息确定第二通信装置对应的循环移位位数。
可选的，一个或多个通信装置接收到第一通信装置广播的配置信息之后，可以确定自己对应的循环移位位数。为便于描述，下文以第二通信装置接收该配置信息为例进行说明。
第二通信装置接收到该配置信息之后，根据该配置信息中包括的一个或多个设备的设备地址，在该配置信息包括的序列配置信息中查找与自己的设备地址匹配的设备所对应的循环移位位数。第二通信装置再可以从序列集中确定自己进行循环移位的目标序列，对该目标序列进行循环移位后(再重复一次或多次)得到前导码序列，该循环移位的位数等于第二通信装置对应的循环移位位数。第二通信装置发送PPDU，该PPDU包含该前导码序列。可选的，该前导码序列可以携带于PPDU的同步(SYNC)字段中，具体携带方式可以参考前述图4，这里不赘述。本申请实施例中PPDU的帧结构可以只包括同步(SYNC)字段，可选的包括帧开始分隔符(SFD)字段；本申请实施例中PPDU的帧结构也可以是前述图3所示的任一种帧结构，本申请实施例不做限定。
可选的，上述目标序列的确定方式包括但不限于以下三种。第一种可能的实现方式中，第二通信装置和与其交互(或执行同一业务)的另一方协商确定进行循环移位的序列是序列集中的哪一个序列，为便于描述，记协商确定出的序列为目标序列。第二种可能的实现方式中，上述序列配置信息中还包括每个设备对应的序列长度，第二通信装置接收到该序列配置信息后，可以确定自己对应的序列长度，基于自己对应的序列长度在序列集中查找等于该序列长度的序列作为目标序列。此种实现方式中，序列集中同一长度的序列只有一个。第三种实现方式中，上述序列配置信息中还包括每个设备对应的序列标识，第二通信装置接收到该 序列配置信息后，可以确定自己对应的序列标识，该序列标识在序列集中所标识的序列即为目标序列。
本申请实施例通过对完备序列进行循环移位来构造前导码序列，并通过配置用于完成不同业务的设备所对应的循环移位位数不同，使得用于完成不同业务的设备的前导码序列之间存在零互相关区，从而提高UWB系统的抗干扰能力。同时，因为完备序列经过循环移位后仍然是完备序列，所以前导码序列也具有良好的周期自相关特性，从而可以提高UWB系统的同步性能。此外，本申请实施例的前导码序列对现有UWB设备也不存在干扰。
下面举例说明本申请实施例涉及的序列集及其中的序列。
举例来说，本申请实施例的序列集中任一个序列是完备序列，其包括1，-1以及0三种元素。可理解，序列中的元素1可以用正脉冲表示，元素-1可以用负脉冲表示，元素0表示无脉冲。
下述表1示出了本申请实施例的序列集中可能用到的部分序列。可理解，表1中的各个序列仅是示例，其可以进行各种变形，比如对表1中的序列进行循环移位、取反、或逆序等可以得到同等长度的等效序列，表1中各个序列的各种变形都在本申请实施例的保护范围内。
表1









上述表1示出了不同序列长度(即N)的完备序列。可理解，在信道质量较差或者用户数较多的情况下，利用序列长度N越长的完备序列生成前导码序列，可以提高UWB系统的性能。这是因为完备序列的序列长度N越长，该完备序列中非零元素的个数越多，其生成的前导码序列的周期自相关主瓣的幅度越大，也就是该前导码序列的周期自相关主瓣幅度与旁瓣幅度的比值越大，有利于识别出该前导码序列的自相关主瓣位置(比如有利于确定测距场景中测距信号的接收时间)，从而提高UWB系统的性能。此外，本申请实施例中完备序列的序列长度N越长，其支持的用户数越多。
而在信道质量较好的情况下，利用序列长度N较短的完备序列生成前导码序列，可以减少前导码序列的发送延迟。
实施例二
本申请实施例二主要介绍利用三元完备序列(Perfect Ternary Sequence)进行循环移位生成一种新的前导码序列的方法。
可选的，本申请实施例二可以与前述实施例一结合实施，也可以单独实施，本申请不做限制。当本申请实施例二与前述实施例一结合实施时，前述实施例一在本申请实施例二前执行，具体内容参见下文描述。
可选的，本申请实施例提供的基于UWB的PPDU传输方法可以应用于一个节点与一个节点的测距、定位或感知等场景中，也可以应用于一个节点与多个节点的测距、定位或感知等场景中，还可以应用于多个节点与多个节点的测距、定位或感知等场景中，本申请实施例不做限制。
参见图12，图12是本申请实施例提供的基于UWB的PPDU传输方法的一种流程示意图。该方法中所涉及的第三通信装置和第四通信装置可以是前述图1或图2中任两个可以进行数据传输的设备。如图12所示，该基于UWB的PPDU传输方法包括但不限于以下步骤：
S201，第三通信装置生成PPDU，该PPDU包含前导码序列，该前导码序列是序列集中的目标序列经过循环移位后生成，该序列集中的任一个序列的周期自相关旁瓣幅度为0。
S202，第三通信装置发送该PPDU。
相应的，第四通信装置接收该PPDU。
S203，第四通信装置对该PPDU进行处理。
可选的，上述前导码序列可以携带于PPDU的同步(SYNC)字段中，具体携带方式可以参考前述图4，这里不赘述。本申请实施例中PPDU的帧结构可以只包括同步(SYNC)字段，可选的包括帧开始分隔符(SFD)字段；本申请实施例中PPDU的帧结构也可以是前述图3所示的任一种帧结构，本申请实施例不做限定。
可选的，上述前导码序列是上述序列集中的目标序列经过循环移位后得到，或者上述前导码序列是上述序列集中的目标序列经过循环移位后再重复一次或多次后得到。该序列集中的任一个序列的周期自相关旁瓣幅度为0，该序列集的具体内容参见前述实施例一的相关描述，这里不详述。示例性的，本申请实施例的序列集可以包括前述表1中的全部或部分序列。
一种可能的实现方式中，该目标序列和循环移位的位数中的至少一项可以是第三通信装置和第四通信装置协商确定的。该目标序列和循环移位的位数中未协商的部分可以通过协调者配置的方式或其他方式确定，本申请实施例不做限制。举例来说，目标序列的协商方式有两种，一个示例中，第三通信装置和第四通信装置可以通过协商序列索引的方式确定目标序列，再对该目标序列进行循环移位生成前导码序列。另一个示例中，如果序列集中同一长度的序列只有一个，第三通信装置和第四通信装置还可以通过协商序列长度的方式确定目标序列，再对该目标序列进行循环移位生成前导码序列。另一种可能的实现方式中，该目标序列可以是前述图1或图2所示的PAN协调者(coordinator)给第三通信装置和第四通信装置配置的，具体配置方式可参考前述实施例一的相关描述，这里不赘述。该目标序列和循环移位的位数中未配置的部分可以通过第三通信装置和第四通信装置协商的方式或其他方式确定，本申请实施例不做限制。示例性的，协调者(coordinator)广播配置信息，该配置信息包括第三通信装置的设备地址。该配置信息还包括序列配置信息，该序列配置信息包括以下一项或多项：第三通信装置对应的循环移位位数，第三通信装置对应的序列长度，第三通信装置对应的序列标识。该循环移位位数用于对该序列集中的该目标序列进行循环移位，该序列长度用于确定该序列集中该目标序列，该序列标识用于标识该序列集中的该目标序列。
本申请实施例的通信装置从序列集中确定一个序列，对这个序列进行循环移位后生成前导码序列，因为这个序列的周期自相关旁瓣幅度为0，有效保证了前导码序列的自相关特性，使得UWB系统具有较好的同步性能；另外，经过不同循环移位生成的前导码序列之间可能存在零互相关区，使得选用到不同循环移位位数的多个通信装置之间因互相关旁瓣导致的干扰较小，从而提高UWB系统的抗干扰能力。
在本申请的一些实施例中，除了通过上文提及的对完备序列进行循环移位生成前导码序列的方式，还可以通过其他方式生成前导码序列。
实施例三
本申请实施例三主要介绍通过配置抽样间隔(即d)，利用d抽样的方式来生成前导码序列。
参见图13，图13是本申请实施例提供的信息交互方法的另一种流程示意图。该方法中所涉及的第第一通信装置可以是前述图1或图2中的PAN协调者，第二通信装置可以是前述图1或图2中除PAN协调者外的任一设备。如图13所示，该信息交互方法包括但不限于以下步骤：
S301，第一通信装置生成配置信息，该配置信息包括一个或多个设备的设备地址，该配置信息还包括序列配置信息，该序列配置信息包括每个设备对应的抽样间隔。
S302，第一通信装置发送该配置信息。示例性的，第一通信装置以广播的方式发送该配 置信息。示例性的，该配置信息可以加密后再发送，或者该配置信息中的序列配置信息加密后再发送，再或者，对该配置信息中每个设备对应的抽样间隔加密后再发送。具体加解密方式本申请实施例不做限制。
相应的，一个或多个通信装置接收该配置信息。
可理解，设备地址用于标识设备。本申请实施例中的设备地址可以是完整的地址，比如完整的MAC地址，也可以是完整地址中的一部分，比如MAC地址的前16位或前8位；本申请实施例不限制设备地址的实现方式。在一些实施例中，上述配置信息包括的设备地址也可以替换成设备标识。
可选的，上述序列配置信息包括上述一个或多个设备中每个设备对应的抽样间隔，一个抽样间隔用于对序列集中的一个序列重复该抽样间隔次后进行抽样，该一个抽样间隔(d)与该一个序列的长度(N)互素(即d与N的最大公约数是1)。为便于描述，本申请实施例将抽样间隔记为d，d是正整数；也就是说抽样间隔是正整数。上述序列配置信息可以用于确定前导码序列，示例性的，前导码序列可以是序列集中的序列重复d次后再每隔d个元素抽取一位后得到的d抽样序列，当然该前导码序列也可以是该d抽样序列重复一次或多次后得到的。
其中，上述序列集中的任一个序列的周期自相关旁瓣幅度为0，且周期自相关主瓣幅度不为0，即该序列集中任一个序列的周期自相关函数R(τ)＝0，对于任何的τ不等于0均成立。也就是说，该序列集中的任一个序列是完备序列。示例性的，本申请实施例的序列集中各个序列的具体内容参见前述表1，这里不详述。可理解，完备序列通常由1，-1以及0中的至少两种元素构成。
可选的，上述一个或多个设备中用于完成不同业务的设备所对应的抽样间隔不同，换句话说，执行不同业务的设备所对应的抽样间隔(即d的值)不相同。上述一个或多个设备中用于共同完成一项业务的设备所对应的抽样间隔相同，换句话说，多个设备可以对应一个抽样间隔(即多个设备可以对应同一个d)。当然，上述一个或多个设备可以分成多个设备分组，每个设备分组中的设备用于共同完成一项业务。一个设备分组可以对应一个抽样间隔(即d的值)，多个设备分组对应的多个抽样间隔可以各不相同。
可理解，上述一个或多个设备中用于完成不同业务的设备所对应的完备序列可以相同，也可以不相同，本申请实施例不做限制。
可选的，在实际应用中，用于共同完成一项业务的多个设备对同一个序列进行抽样时，抽样间隔可以不相同；用于共同完成一项业务的多个设备对不同序列进行抽样时，抽样间隔可以相同，也可以不相同。
可选的，上述序列配置信息还包括每个设备对应的序列长度，该序列长度用于确定序列集中用于抽样的序列。示例性的，序列集中同一长度的序列只有一个，所以可以通过序列长度唯一确定一个序列。其中，一个设备对应的抽样间隔d与该设备对应的序列长度N互素。
可选的，上述序列配置信息还包括每个设备对应的序列标识，该序列标识用于标识序列集中的序列。示例性的，上述一个或多个设备中用于共同完成一项业务的设备所对应的序列标识相同，上述一个或多个设备中用于完成不同业务的设备所对应的序列标识不同。其中，一个设备对应的抽样间隔d与该设备对应的序列标识所标识的序列的长度N互素。
S303，第二通信装置根据该配置信息确定第二通信装置对应的抽样间隔。
可选的，一个或多个通信装置接收到第一通信装置广播的配置信息之后，可以确定自己对应的抽样间隔d。为便于描述，下文以第二通信装置接收该配置信息为例进行说明。
第二通信装置接收到该配置信息之后，根据该配置信息中包括的一个或多个设备的设备地址，在该配置信息包括的序列配置信息中查找与自己的设备地址匹配的设备所对应的抽样间隔。为便于描述，将序列配置信息中第二通信装置对应的抽样间隔记为第一抽样间隔d1。第二通信装置再可以从序列集中确定自己进行抽样的第二序列，将该第二序列重复第一抽样间隔d1次后得到第一序列，再对该第一序列每隔第一抽样间隔d1个元素抽取一位后构成前导码序列。可理解，第一抽样间隔d1与第二序列的长度互素。第二通信装置发送PPDU，该PPDU包含该前导码序列。可选的，该前导码序列可以携带于PPDU的同步(SYNC)字段中，具体携带方式可以参考前述图4，这里不赘述。本申请实施例中PPDU的帧结构可以只包括同步(SYNC)字段，可选的包括帧开始分隔符(SFD)字段；本申请实施例中PPDU的帧结构也可以是前述图3所示的任一种帧结构，本申请实施例不做限定。
可选的，上述第二序列的确定方式包括但不限于以下三种。第一种可能的实现方式中，第二通信装置和与其交互(或执行同一业务)的另一方协商确定进行抽样的序列是序列集中的哪一个序列，为便于描述，记协商确定出的序列为第二序列。第二种可能的实现方式中，上述序列配置信息中还包括每个设备对应的序列长度，第二通信装置接收到该序列配置信息后，可以确定自己对应的序列长度，基于自己对应的序列长度在序列集中查找等于该序列长度的序列作为第二序列。此种实现方式中，序列集中同一长度的序列只有一个。第三种实现方式中，上述序列配置信息中还包括每个设备对应的序列标识，第二通信装置接收到该序列配置信息后，可以确定自己对应的序列标识，该序列标识在序列集中所标识的序列即为第二序列。
本申请实施例通过对完备序列进行抽样的方式来生成前导码序列，因为完备序列重复d次后再每隔d个元素抽取一位构成的d抽样序列(该d抽样序列即为本申请实施例的前导码序列)仍然是完备序列，有效保证了前导码序列的自相关特性，使得UWB系统具有较好的同步性能。
此外，在UWB感知场景中存在两种安全问题。一种安全问题是从接收端到发射端的信道冲击响应(channel impulsive response，CIR)反馈被非法用户窃听，造成用户隐私的泄露。另一种安全问题是用于感知的前导码序列可以被任何设备接收并处理，通过监听合法发射者的前导码并测量CIR，非授权的用户也能探测到目标(target)是否存在以及目标的具体位置，进而分析目标习惯，窃取用户隐私。其中，第一种安全问题可以通过对CIR加密的方式解决。而因为前导码序列不能加密，一旦前导码序列加密后就不具备其原有的自相关和互相关特性，也就是说如果前导码序列是完备序列，存在零自相关区，当该前导码序列加密后，加密得到的序列就不一定是完备序列，也不一定存在零自相关区，所以第二种安全问题不能通过加密的方式解决。
而本申请实施例通过协调者配置抽样间隔(配置信息可以加密，以防止被非授权用户获知)，利用配置的抽样间隔对完备序列进行抽样生成前导码序列，可以使非授权用户无法测量CIR，从而提高UWB感知过程中的安全性。这是因为即使非授权用户已知完备序列，但非授权用户无法获知抽样间隔，那么非授权用户监听到前导码，利用该前导码与已知的完备序列做相关无法获得主瓣，即无法测量到CIR。
实施例四
本申请实施例四主要介绍利用完备序列进行抽样生成一种新的前导码序列的方法。
可选的，本申请实施例四可以与前述实施例三结合实施，也可以单独实施，本申请不做 限制。当本申请实施例四与前述实施例三结合实施时，前述实施例三在本申请实施例四前执行，具体内容参见下文描述。
参见图14，图14是本申请实施例提供的基于UWB的PPDU传输方法的另一种流程示意图。该方法中所涉及的第三通信装置和第四通信装置可以是前述图1或图2中任两个可以进行数据传输的设备。如图14所示，该基于UWB的PPDU传输方法包括但不限于以下步骤：
S401，第三通信装置生成PPDU，该PPDU包含前导码序列，该前导码序列基于序列集中的第二序列和抽样间隔生成，该抽样间隔与该第二序列的长度互素，该序列集中的任一个序列的周期自相关旁瓣幅度为0。
S402，第三通信装置发送该PPDU。
相应的，第四通信装置接收该PPDU。
S403，第四通信装置对该PPDU进行处理。
可选的，上述前导码序列可以携带于PPDU的同步(SYNC)字段中，具体携带方式可以参考前述图4，这里不赘述。本申请实施例中PPDU的帧结构可以只包括同步(SYNC)字段，可选的包括帧开始分隔符(SFD)字段；本申请实施例中PPDU的帧结构也可以是前述图3所示的任一种帧结构，本申请实施例不做限定。
可选的，上述前导码序列是第一序列每隔抽样间隔d个元素抽取一位后获得，该第一序列是上述序列集中的第二序列重复该抽样间隔d次后获得。该抽样间隔d与该第二序列的长度N互素。该序列集中的任一个序列的周期自相关旁瓣幅度为0，且周期自相关主瓣幅度不为0。也就是说，该序列集中的任一个序列是完备序列。示例性的，本申请实施例的序列集可以包括前述表1中的全部或部分序列。
换句话说，第三通信装置可以对完备序列重复d次后得到的序列每隔d个元素抽取一位构成该完备序列的d抽样序列。该d抽样序列即为前导码序列。该完备序列的长度为N，且抽样间隔d满足d与N互素(即d与N的最大公约数是1)。通过选取不同的d，就可以生成不同的前导码序列。
一种可能的实现方式中，该第二序列和抽样间隔d中的至少一项可以是第三通信装置和第四通信装置协商确定的。该第二序列和抽样间隔d中未协商的部分可以通过协调者配置的方式或其他方式确定，本申请实施例不做限制。示例性的，协商过程可以加密，本申请实施例不限制具体的加解密方式。举例来说，第二序列的协商方式有两种，一个示例中，第三通信装置和第四通信装置可以通过协商序列索引的方式确定第二序列，再将该第二序列重复该抽样间隔d次后再每隔抽样间隔d个元素抽取一位生成前导码序列。另一个示例中，如果序列集中同一长度的序列只有一个，第三通信装置和第四通信装置还可以通过协商序列长度的方式确定第二序列，再将该第二序列重复该抽样间隔d次后再每隔抽样间隔d个元素抽取一位生成前导码序列。其中，协商过程可以加密，具体加解密方式本申请实施例不做限制。
另一种可能的实现方式中，该第二序列可以是前述图1或图2所示的PAN协调者(coordinator)给第三通信装置和第四通信装置配置的，具体配置方式可参考前述实施例三的相关描述，这里不赘述。该第二序列和抽样间隔d中未配置的部分可以通过第三通信装置和第四通信装置协商的方式或其他方式确定，本申请实施例不做限制。示例性的，协调者(coordinator)广播配置信息，该配置信息包括第三通信装置的设备地址。该配置信息还包括序列配置信息，该序列配置信息包括以下一项或多项：第三通信装置对应的抽样间隔，第三通信装置对应的序列长度，第三通信装置对应的序列标识。该抽样间隔用于对该序列集中的第二序列重复抽样间隔d次后进行抽样，该序列长度用于确定该序列集中用于抽样的第二序 列，该序列标识用于标识该序列集中的第二序列。其中，配置信息也可以加密，具体加解密方式本申请实施例不做限制。
本申请实施例的通信装置从序列集中确定一个完备序列，对这个完备序列进行抽样生成前导码序列，因为完备序列重复d次后再每隔d个元素抽取一位构成的d抽样序列(该d抽样序列即为本申请实施例的前导码序列)仍然是完备序列，有效保证了前导码序列的自相关特性，使得UWB系统具有较好的同步性能。
此外，在UWB感知场景中，本申请实施例通过收发双方协商抽样间隔(协商过程可以加密，以防止被非授权用户获知)，并利用协商的抽样间隔对完备序列进行抽样生成前导码序列，还可以使非授权用户无法测量CIR，从而提高UWB感知过程中的安全性。这是因为即使非授权用户已知完备序列，但非授权用户无法获知抽样间隔，那么非授权用户监听到前导码，利用该前导码与已知的完备序列做自相关无法获得主瓣，即无法测量到CIR。
一个可选实施例中，可以对完备序列取逆序或者取反生成前导码序列。对完备序列取逆序后得到前导码序列，即完备序列的第n个元素变为第(N-n)modN个元素。对完备序列取反后得到前导码序列，即序列中的元素1变为元素-1，元素-1变为元素1。
一种可能的实施流程，协调者可以广播配置信息，该配置信息包括一个或多个设备的设备地址，该配置信息还包括序列配置信息，该序列配置信息用于指示每个设备是否取逆序或者是否取反。相应的，一个或多个通信装置接收该配置信息后，可以按照该序列配置信息的指示对各自的完备序列进行处理(比如取逆序或取反)后生成各自的前导码序列，发送包含该前导码序列的PPDU。示例性的，本申请实施例的完备序列可以是上述表1所示的全部或部分。
另一种可能的实施流程，发送方和接收方可以协商是否取逆序或者是否取反，以及用于取逆序或取反的完备序列，发送方和接收方可以根据协商的结果，生成前导码序列，并交互包含该前导码序列的PPDU。示例性的，本申请实施例的完备序列可以是上述表1所示的全部或部分。
本申请实施例通过对完备序列取逆序或者取反来生成前导码序列，因为完备序列取逆序或者取反后得到的序列仍然是完备序列，有效保证了前导码序列的自相关特性，使得UWB系统具有较好的同步性能。此外，本申请实施例对完备序列取逆序来生成前导码序列的方式，还可以使非授权用户无法测量CIR，从而提高UWB感知过程中的安全性。
上述内容详细阐述了本申请提供的方法，为了便于实施本申请实施例的上述方案，本申请实施例还提供了相应的装置或设备。
本申请根据上述方法实施例对通信装置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。下面将结合图15至图17详细描述本申请实施例的通信装置。
参见图15，图15是本申请实施例提供的通信装置的一结构示意图。如图15所示，该通信装置包括收发单元10和处理单元20。
在本申请的一些实施例中，该通信装置可以是上文示出的第一通信装置或其中的芯片。即图15所示的通信装置可以用于执行上文方法实施例中由第一通信装置执行的步骤或功能 等。
一种设计中，处理单元20，用于生成配置信息，该配置信息包括一个或多个设备的设备地址，该配置信息还包括序列配置信息，该序列配置信息包括每个设备对应的循环移位位数，该循环移位位数用于对序列集中的序列进行循环移位，该序列集中的任一个序列的周期自相关旁瓣幅度为0，该一个或多个设备中用于完成不同业务的设备所对应的循环移位位数不同；收发单元10，用于发送该配置信息。
其中，关于配置信息的具体说明可以参考上文所示的方法实施例一，这里不再一一详述。
应理解，本申请实施例示出的收发单元和处理单元的具体说明仅为示例，对于收发单元和处理单元的具体功能或执行的步骤等，可以参考上述方法实施例，这里不再详述。示例性的，收发单元10可以用于执行图8所示的步骤S102；处理单元20可以用于执行图8所示的步骤S101。
另一种设计中，处理单元20，用于生成配置信息，该配置信息包括一个或多个设备的设备地址，该配置信息还包括序列配置信息，该序列配置信息包括每个设备对应的抽样间隔，一个抽样间隔用于对序列集中的一个序列重复该抽样间隔次后进行抽样，该一个抽样间隔与该一个序列的长度互素；该序列集中的任一个序列的周期自相关旁瓣幅度为0，该一个或多个设备中用于完成不同业务的设备所对应的抽样间隔不同；收发单元10，用于发送该配置信息。
其中，关于配置信息的具体说明可以参考上文所示的方法实施例三，这里不再一一详述。
应理解，本申请实施例示出的收发单元和处理单元的具体说明仅为示例，对于收发单元和处理单元的具体功能或执行的步骤等，可以参考上述方法实施例，这里不再详述。示例性的，收发单元10可以用于执行图13所示的步骤S302；处理单元20可以用于执行图13所示的步骤S301。
复用图15，在本申请的另一些实施例中，该通信装置可以是上文示出的第二通信装置或其中的芯片。即图15所示的通信装置可以用于执行上文方法实施例中由第二通信装置执行的步骤或功能等。
一种设计中，收发单元10，用于接收配置信息，该配置信息包括一个或多个设备的设备地址，该配置信息还包括序列配置信息，该序列配置信息包括每个设备对应的循环移位位数，该循环移位位数用于对序列集中的序列进行循环移位，该序列集中的任一个序列的周期自相关旁瓣幅度为0，该一个或多个设备中用于完成不同业务的设备所对应的循环移位位数不同；处理单元20，用于根据该配置信息确定该通信装置对应的循环移位位数。
在一种可能的实现方式中，收发单元10，还用于发送PPDU，该PPDU包含前导码序列，该前导码序列是该序列集中的目标序列经过循环移位后得到，该循环移位的位数等于该通信装置对应的循环移位位数。
其中，关于配置信息、PPDU等的具体说明可以参考上文所示的方法实施例一，这里不再一一详述。
应理解，本申请实施例示出的收发单元和处理单元的具体说明仅为示例，对于收发单元和处理单元的具体功能或执行的步骤等，可以参考上述方法实施例，这里不再详述。示例性的，收发单元10可以用于接收配置信息和发送PPDU；处理单元20可以用于执行图8所示的步骤S103。
另一种设计中，收发单元10，用于接收配置信息，该配置信息包括一个或多个设备的设备地址，该配置信息还包括序列配置信息，该序列配置信息包括每个设备对应的抽样间隔， 一个抽样间隔用于对序列集中的一个序列重复该抽样间隔次后进行抽样，该一个抽样间隔与该一个序列的长度互素；该序列集中的任一个序列的周期自相关旁瓣幅度为0，该一个或多个设备中用于完成不同业务的设备所对应的抽样间隔不同；处理单元20，用于根据该配置信息确定该通信装置对应的抽样间隔。
在一种可能的实现方式中，收发单元10，还用于发送PPDU，该PPDU包含前导码序列，该前导码序列是第一序列每隔第一抽样间隔个元素抽取一位后获得，该第一序列是上述序列集中的第二序列重复该第一抽样间隔次后获得，该第一抽样间隔为第二通信装置对应的抽样间隔，该第一抽样间隔与该第二序列的长度互素。
其中，关于配置信息、PPDU等的具体说明可以参考上文所示的方法实施例三，这里不再一一详述。
应理解，本申请实施例示出的收发单元和处理单元的具体说明仅为示例，对于收发单元和处理单元的具体功能或执行的步骤等，可以参考上述方法实施例，这里不再详述。示例性的，收发单元10可以用于接收配置信息和发送PPDU；处理单元20可以用于执行图13所示的步骤S303。
复用图15，在本申请的又一些实施例中，该通信装置可以是上文示出的第三通信装置或其中的芯片。即图15所示的通信装置可以用于执行上文方法实施例中由第三通信装置执行的步骤或功能等。
一种设计中，处理单元20，用于生成PPDU，该PPDU包括前导码序列，该前导码序列是序列集中的目标序列经过循环移位后生成，该序列集中的任一个序列的周期自相关旁瓣幅度为0；收发单元10，用于发送该PPDU。
在一种可能的实现方式中，收发单元10还用于接收配置信息。
其中，关于PPDU、前导码序列、序列集、配置信息等的具体说明可以参考上文所示的方法实施例二，这里不再一一详述。
应理解，本申请实施例示出的收发单元和处理单元的具体说明仅为示例，对于收发单元和处理单元的具体功能或执行的步骤等，可以参考上述方法实施例，这里不再详述。示例性的，收发单元10可以用于执行图12所示的步骤S202；处理单元20可以用于执行图12所示的步骤S201。
另一种设计中，处理单元20，用于生成PPDU，该PPDU包含前导码序列，该前导码序列基于序列集中的第二序列和抽样间隔生成，该抽样间隔与该第二序列的长度互素，该序列集中的任一个序列的周期自相关旁瓣幅度为0；收发单元10，用于发送该PPDU。
在一种可能的实现方式中，收发单元10还用于接收配置信息。
其中，关于PPDU、前导码序列、序列集、配置信息等的具体说明可以参考上文所示的方法实施例四，这里不再一一详述。
应理解，本申请实施例示出的收发单元和处理单元的具体说明仅为示例，对于收发单元和处理单元的具体功能或执行的步骤等，可以参考上述方法实施例，这里不再详述。示例性的，收发单元10可以用于执行图14所示的步骤S402；处理单元20可以用于执行图14所示的步骤S401。
复用图15，在本申请的再又一些实施例中，该通信装置可以是上文示出的第四通信装置或其中的芯片。即图15所示的通信装置可以用于执行上文方法实施例中由第四通信装置执行的步骤或功能等。
一种设计中，收发单元10，用于接收PPDU，该PPDU包括前导码序列，该前导码序列是序列集中的目标序列经过循环移位后生成，该序列集中的任一个序列的周期自相关旁瓣幅度为0；处理单元20，用于对该PPDU进行处理。
其中，关于PPDU、前导码序列、序列集等的具体说明可以参考上文所示的方法实施例二，这里不再一一详述。
应理解，本申请实施例示出的收发单元和处理单元的具体说明仅为示例，对于收发单元和处理单元的具体功能或执行的步骤等，可以参考上述方法实施例，这里不再详述。示例性的，收发单元10可以用于接收PPDU；处理单元20可以用于执行图12所示的步骤S203。
另一种设计中，收发单元10，用于接收PPDU，该PPDU包含前导码序列，该前导码序列基于序列集中的第二序列和抽样间隔生成，该抽样间隔与该第二序列的长度互素，该序列集中的任一个序列的周期自相关旁瓣幅度为0；处理单元20，用于对该PPDU进行处理。
其中，关于PPDU、前导码序列、序列集等的具体说明可以参考上文所示的方法实施例四，这里不再一一详述。
应理解，本申请实施例示出的收发单元和处理单元的具体说明仅为示例，对于收发单元和处理单元的具体功能或执行的步骤等，可以参考上述方法实施例，这里不再详述。示例性的，收发单元10可以用于接收PPDU；处理单元20可以用于执行图14所示的步骤S403。
以上介绍了本申请实施例的通信装置，以下介绍通信装置可能的产品形态。应理解，但凡具备上述图15所述的通信装置的功能的任何形态的产品，都落入本申请实施例的保护范围。还应理解，以下介绍仅为举例，不限制本申请实施例的通信装置的产品形态仅限于此。
在一种可能的实现方式中，图15所示的通信装置中，处理单元20可以是一个或多个处理器，收发单元10可以是收发器，或者收发单元10还可以是发送单元和接收单元，发送单元可以是发送器，接收单元可以是接收器，该发送单元和接收单元集成于一个器件，例如收发器。本申请实施例中，处理器和收发器可以被耦合等，对于处理器和收发器的连接方式，本申请实施例不作限定。在执行上述方法的过程中，上述方法中有关发送信息(如发送PPDU、配置信息等)的过程，可以理解为由处理器输出上述信息的过程。在输出上述信息时，处理器将该上述信息输出给收发器，以便由收发器进行发射。该上述信息在由处理器输出之后，还可能需要进行其他的处理，然后才到达收发器。类似的，上述方法中有关接收信息(如接收PPDU、配置信息等)的过程，可以理解为处理器接收输入的上述信息的过程。处理器接收输入的信息时，收发器接收该上述信息，并将其输入处理器。更进一步的，在收发器收到该上述信息之后，该上述信息可能需要进行其他的处理，然后才输入处理器。
参见图16，图16是本申请实施例提供的通信装置1000的结构示意图。该通信装置1000可以为第一通信装置或第二通信装置或第三通信装置或第四通信装置，或其中的芯片。图16仅示出了通信装置1000的主要部件。除处理器1001和收发器1002之外，所述通信装置还可以进一步包括存储器1003、以及输入输出装置(图未示意)。
处理器1001主要用于对通信协议以及通信数据进行处理，以及对整个通信装置进行控制，执行软件程序，处理软件程序的数据。存储器1003主要用于存储软件程序和数据。收发器1002可以包括控制电路和天线，控制电路主要用于基带信号与射频信号的转换以及对射频信号的处理。天线主要用于收发电磁波形式的射频信号。输入输出装置，例如触摸屏、显示屏，键盘等主要用于接收用户输入的数据以及对用户输出数据。
当通信装置开机后，处理器1001可以读取存储器1003中的软件程序，解释并执行软件 程序的指令，处理软件程序的数据。当需要通过无线发送数据时，处理器1001对待发送的数据进行基带处理后，输出基带信号至射频电路，射频电路将基带信号进行射频处理后将射频信号通过天线以电磁波的形式向外发送。当有数据发送到通信装置时，射频电路通过天线接收到射频信号，将射频信号转换为基带信号，并将基带信号输出至处理器1001，处理器1001将基带信号转换为数据并对该数据进行处理。
在另一种实现中，所述的射频电路和天线可以独立于进行基带处理的处理器而设置，例如在分布式场景中，射频电路和天线可以与独立于通信装置，呈拉远式的布置。
其中，处理器1001、收发器1002、以及存储器1003可以通过通信总线连接。
一种设计中，通信装置1000可以用于执行前述实施例一中第一通信装置的功能：处理器1001可以用于执行图8中的步骤S101，和/或用于执行本文所描述的技术的其它过程；收发器1002可以用于执行图8中的步骤S102，和/或用于本文所描述的技术的其它过程。
另一种设计中，通信装置1000可以用于执行前述实施例一中第二通信装置的功能：处理器1001可以用于执行图8中的步骤S103，和/或用于执行本文所描述的技术的其它过程；收发器1002可以用于接收图8中的配置信息，和/或用于本文所描述的技术的其它过程。
一种设计中，通信装置1000可以用于执行前述实施例二中第三通信装置的功能：处理器1001可以用于执行图12中的步骤S201，和/或用于执行本文所描述的技术的其它过程；收发器1002可以用于执行图12中的步骤S202，和/或用于本文所描述的技术的其它过程。
另一种设计中，通信装置1000可以用于执行前述实施例二中第四通信装置的功能：处理器1001可以用于执行图12中的步骤S203，和/或用于执行本文所描述的技术的其它过程；收发器1002可以用于接收图12中步骤S203处理的PPDU，和/或用于本文所描述的技术的其它过程。
一种设计中，通信装置1000可以用于执行前述实施例三中第一通信装置的功能：处理器1001可以用于执行图13中的步骤S301，和/或用于执行本文所描述的技术的其它过程；收发器1002可以用于执行图13中的步骤S302，和/或用于本文所描述的技术的其它过程。
另一种设计中，通信装置1000可以用于执行前述实施例三中第二通信装置的功能：处理器1001可以用于执行图13中的步骤S303，和/或用于执行本文所描述的技术的其它过程；收发器1002可以用于接收图13中的配置信息，和/或用于本文所描述的技术的其它过程。
一种设计中，通信装置1000可以用于执行前述实施例四中第三通信装置的功能：处理器1001可以用于执行图14中的步骤S401，和/或用于执行本文所描述的技术的其它过程；收发器1002可以用于执行图14中的步骤S402，和/或用于本文所描述的技术的其它过程。
另一种设计中，通信装置1000可以用于执行前述实施例四中第四通信装置的功能：处理器1001可以用于执行图14中的步骤S403，和/或用于执行本文所描述的技术的其它过程；收发器1002可以用于接收图14中步骤S403处理的PPDU，和/或用于本文所描述的技术的其它过程。
在上述任一种设计中，处理器1001中可以包括用于实现接收和发送功能的收发器。例如该收发器可以是收发电路，或者是接口，或者是接口电路。用于实现接收和发送功能的收发电路、接口或接口电路可以是分开的，也可以集成在一起。上述收发电路、接口或接口电路可以用于代码/数据的读写，或者，上述收发电路、接口或接口电路可以用于信号的传输或传递。
在上述任一种设计中，处理器1001可以存有指令，该指令可为计算机程序，计算机程序在处理器1001上运行，可使得通信装置1000执行上述方法实施例中描述的方法。计算机程 序可能固化在处理器1001中，该种情况下，处理器1001可能由硬件实现。
在一种实现方式中，通信装置1000可以包括电路，所述电路可以实现前述方法实施例中发送或接收或者通信的功能。本申请中描述的处理器和收发器可实现在集成电路(integrated circuit，IC)、模拟IC、无线射频集成电路(radio frequency integrated circuit，RFIC)、混合信号IC、专用集成电路(application specific integrated circuit，ASIC)、印刷电路板(printed circuit board，PCB)、电子设备等上。该处理器和收发器也可以用各种IC工艺技术来制造，例如互补金属氧化物半导体(complementary metal oxide semiconductor，CMOS)、N型金属氧化物半导体(nMetal-oxide-semiconductor，NMOS)、P型金属氧化物半导体(positive channel metal oxide semiconductor，PMOS)、双极结型晶体管(bipolar junction transistor，BJT)、双极CMOS(BiCMOS)、硅锗(SiGe)、砷化镓(GaAs)等。
本申请中描述的通信装置的范围并不限于此，而且通信装置的结构可以不受图16的限制。通信装置可以是独立的设备或者可以是较大设备的一部分。例如所述通信装置可以是：
(1)独立的集成电路IC，或芯片，或，芯片系统或子系统；
(2)具有一个或多个IC的集合，可选的，该IC集合也可以包括用于存储数据，计算机程序的存储部件；
(3)ASIC，例如调制解调器(Modem)；
(4)可嵌入在其他设备内的模块；
(5)接收机、终端、智能终端、蜂窝电话、无线设备、手持机、移动单元、车载设备、网络设备、云设备、人工智能设备等等；
(6)其他等等。
在另一种可能的实现方式中，图15所示的通信装置中，处理单元20可以是一个或多个逻辑电路，收发单元10可以是输入输出接口，又或者称为通信接口，或者接口电路，或接口等等。或者收发单元10还可以是发送单元和接收单元，发送单元可以是输出接口，接收单元可以是输入接口，该发送单元和接收单元集成于一个单元，例如输入输出接口。参见图17，图17是本申请实施例提供的通信装置的另一结构示意图。如图17所示，图17所示的通信装置包括逻辑电路901和接口902。即上述处理单元20可以用逻辑电路901实现，收发单元10可以用接口902实现。其中，该逻辑电路901可以为芯片、处理电路、集成电路或片上系统(system on chip，SoC)芯片等，接口902可以为通信接口、输入输出接口、管脚等。示例性的，图17是以上述通信装置为芯片为例示出的，该芯片包括逻辑电路901和接口902。可理解，本申请实施例所示的芯片可以包括窄带芯片或超宽带芯片等，本申请实施例不作限定。窄带芯片和超宽带芯片也可以集成在一个装置或芯片上，也可以分别独立，本申请实施例不限制窄带芯片和超宽带芯片在设备中的实现方式。如上文所示的发送PPDU、发送配置信息的步骤可以由超宽带芯片执行，其余步骤是否由超宽带芯片执行，本申请实施例不作限定。
本申请实施例中，逻辑电路和接口还可以相互耦合。对于逻辑电路和接口的具体连接方式，本申请实施例不作限定。
示例性的，当通信装置用于执行前述实施例一中第一通信装置执行的方法或功能或步骤时，逻辑电路901，用于生成配置信息，该配置信息包括一个或多个设备的设备地址，该配置信息还包括序列配置信息，该序列配置信息包括每个设备对应的循环移位位数，该循环移位位数用于对序列集中的序列进行循环移位，该序列集中的任一个序列的周期自相关旁瓣幅度为0，该一个或多个设备中用于完成不同业务的设备所对应的循环移位位数不同；接口902， 用于输出该配置信息。
示例性的，当通信装置用于执行前述实施例一中第二通信装置执行的方法或功能或步骤时，接口902，用于输入配置信息，该配置信息还包括序列配置信息，该序列配置信息包括每个设备对应的循环移位位数，该循环移位位数用于对序列集中的序列进行循环移位，该序列集中的任一个序列的周期自相关旁瓣幅度为0，该一个或多个设备中用于完成不同业务的设备所对应的循环移位位数不同；逻辑电路901，用于根据该配置信息确定第二通信装置对应的循环移位位数。
可理解，关于配置信息、序列配置信息、序列集等的具体说明可以参考上文所示的方法实施例，这里不再一一详述。
示例性的，当通信装置用于执行前述实施例二中第三通信装置执行的方法或功能或步骤时，逻辑电路901，用于生成PPDU，该PPDU包含前导码序列，该前导码序列是序列集中的目标序列经过循环移位后生成，该序列集中的任一个序列的周期自相关旁瓣幅度为0；接口902，用于输出该PPDU。
示例性的，当通信装置用于执行前述实施例二中第四通信装置执行的方法或功能或步骤时，接口902，用于输入PPDU，该PPDU包含前导码序列，该PPDU包含前导码序列，该前导码序列是序列集中的目标序列经过循环移位后生成，该序列集中的任一个序列的周期自相关旁瓣幅度为0；逻辑电路901，用于对该PPDU进行处理。
可理解，关于PPDU、前导码序列、序列集等的具体说明可以参考上文所示的方法实施例，这里不再一一详述。
示例性的，当通信装置用于执行前述实施例三中第一通信装置执行的方法或功能或步骤时，逻辑电路901，用于生成配置信息，该配置信息包括一个或多个设备的设备地址，该配置信息还包括序列配置信息，该序列配置信息包括每个设备对应的抽样间隔，一个抽样间隔用于对序列集中的一个序列重复该抽样间隔次后进行抽样，该一个抽样间隔与该一个序列的长度互素；该序列集中的任一个序列的周期自相关旁瓣幅度为0，该一个或多个设备中用于完成不同业务的设备所对应的抽样间隔不同；接口902，用于输出该配置信息。
示例性的，当通信装置用于执行前述实施例三中第二通信装置执行的方法或功能或步骤时，接口902，用于输入配置信息，该配置信息包括一个或多个设备的设备地址，该配置信息还包括序列配置信息，该序列配置信息包括每个设备对应的抽样间隔，一个抽样间隔用于对序列集中的一个序列重复该抽样间隔次后进行抽样，该一个抽样间隔与该一个序列的长度互素。该序列集中的任一个序列的周期自相关旁瓣幅度为0，该一个或多个设备中用于完成不同业务的设备所对应的抽样间隔不同；逻辑电路901，用于根据该配置信息确定第二通信装置对应的抽样间隔。
可理解，关于配置信息、序列配置信息、序列集等的具体说明可以参考上文所示的方法实施例，这里不再一一详述。
示例性的，当通信装置用于执行前述实施例四中第三通信装置执行的方法或功能或步骤时，逻辑电路901，用于生成PPDU，该PPDU包含前导码序列，该前导码序列基于序列集中的第二序列和抽样间隔生成，该抽样间隔与该第二序列的长度互素，该序列集中的任一个序列的周期自相关旁瓣幅度为0；接口902，用于输出该PPDU。
示例性的，当通信装置用于执行前述实施例四中第四通信装置执行的方法或功能或步骤时，接口902，用于输入PPDU，该PPDU包含前导码序列，该前导码序列基于序列集中的第二序列和抽样间隔生成，该抽样间隔与该第二序列的长度互素，该序列集中的任一个序列的 周期自相关旁瓣幅度为0；逻辑电路901，用于对该PPDU进行处理。
可理解，关于PPDU、前导码序列、序列集等的具体说明可以参考上文所示的方法实施例，这里不再一一详述。
可理解，本申请实施例示出的通信装置可以采用硬件的形式实现本申请实施例提供的方法，也可以采用软件的形式实现本申请实施例提供的方法等，本申请实施例对此不作限定。
对于图17所示的各个实施例的具体实现方式，还可以参考上述各个实施例，这里不再详述。
本申请实施例还提供了一种无线通信系统，该无线通信系统包括第一通信装置和第二通信装置，该第一通信装置和该第二通信装置可以用于执行前述实施例一或前述实施例三中的方法。
本申请实施例还提供了一种无线通信系统，该无线通信系统包括第三通信装置和第四通信装置，该第三通信装置和该第四通信装置可以用于执行前述实施例二或前述实施例四中的方法。
此外，本申请还提供一种计算机程序，该计算机程序用于实现本申请提供的方法中由第一通信装置执行的操作和/或处理。
本申请还提供一种计算机程序，该计算机程序用于实现本申请提供的方法中由第二通信装置执行的操作和/或处理。
本申请还提供一种计算机程序，该计算机程序用于实现本申请提供的方法中由第三通信装置执行的操作和/或处理。
本申请还提供一种计算机程序，该计算机程序用于实现本申请提供的方法中由第四通信装置执行的操作和/或处理。
本申请还提供一种计算机可读存储介质，该计算机可读存储介质中存储有计算机代码，当计算机代码在计算机上运行时，使得计算机执行本申请提供的方法中由第一通信装置执行的操作和/或处理。
本申请还提供一种计算机可读存储介质，该计算机可读存储介质中存储有计算机代码，当计算机代码在计算机上运行时，使得计算机执行本申请提供的方法中由第二通信装置执行的操作和/或处理。
本申请还提供一种计算机可读存储介质，该计算机可读存储介质中存储有计算机代码，当计算机代码在计算机上运行时，使得计算机执行本申请提供的方法中由第三通信装置执行的操作和/或处理。
本申请还提供一种计算机可读存储介质，该计算机可读存储介质中存储有计算机代码，当计算机代码在计算机上运行时，使得计算机执行本申请提供的方法中由第四通信装置执行的操作和/或处理。
本申请还提供一种计算机程序产品，该计算机程序产品包括计算机代码或计算机程序，当该计算机代码或计算机程序在计算机上运行时，使得本申请提供的方法中由第一通信装置执行的操作和/或处理被执行。
本申请还提供一种计算机程序产品，该计算机程序产品包括计算机代码或计算机程序，当该计算机代码或计算机程序在计算机上运行时，使得本申请提供的方法中由第二通信装置执行的操作和/或处理被执行。
本申请还提供一种计算机程序产品，该计算机程序产品包括计算机代码或计算机程序， 当该计算机代码或计算机程序在计算机上运行时，使得本申请提供的方法中由第三通信装置执行的操作和/或处理被执行。
本申请还提供一种计算机程序产品，该计算机程序产品包括计算机代码或计算机程序，当该计算机代码或计算机程序在计算机上运行时，使得本申请提供的方法中由第四通信装置执行的操作和/或处理被执行。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另外，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，也可以是电的，机械的或其它的形式连接。
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申请实施例提供的方案的技术效果。
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，也可以是两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元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，或者该技术方案的全部或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可读存储介质中，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。而前述的可读存储介质包括：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 (25)

  1. 一种信息交互方法，其特征在于，包括：
    通信装置生成配置信息，所述配置信息包括一个或多个设备的设备地址，所述配置信息还包括序列配置信息，所述序列配置信息包括每个设备对应的循环移位位数，所述循环移位位数用于对序列集中的序列进行循环移位，所述序列集中的任一个序列的周期自相关旁瓣幅度为0，所述一个或多个设备中用于完成不同业务的设备所对应的循环移位位数不同；
    所述通信装置发送所述配置信息。
  2. 一种信息交互方法，其特征在于，包括：
    通信装置接收配置信息，所述配置信息包括一个或多个设备的设备地址，所述配置信息还包括序列配置信息，所述序列配置信息包括每个设备对应的循环移位位数，所述循环移位位数用于对序列集中的序列进行循环移位，所述序列集中的任一个序列的周期自相关旁瓣幅度为0，所述一个或多个设备中用于完成不同业务的设备所对应的循环移位位数不同；
    所述通信装置根据所述配置信息确定所述通信装置对应的循环移位位数。
  3. 根据权利要求2所述的方法，其特征在于，所述通信装置根据所述配置信息确定所述通信装置对应的循环移位位数之后，所述方法还包括：
    所述通信装置发送PPDU，所述PPDU包含前导码序列，所述前导码序列是所述序列集中的目标序列经过循环移位后得到，所述循环移位的位数等于所述通信装置对应的循环移位位数。
  4. 根据权利要求1-3中任一项所述的方法，其特征在于，所述一个或多个设备中用于共同完成一项业务的设备所对应的循环移位位数相同。
  5. 根据权利要求1-4中任一项所述的方法，其特征在于，所述一个或多个设备属于M个设备分组，每个设备分组中的设备用于共同完成一项业务，一个设备分组对应一个循环移位位数，M为大于或等于1的整数；
    所述M个设备分组分别对应的循环移位位数为：0,Z,2Z,3Z,...,(M-1)×Z；所述一个或多个设备对应所述序列集中的同一个序列，所述M个设备分组对应的M个循环移位位数用于对所述序列集中的同一个序列进行循环移位；
    其中，N表示所述一个或多个设备对应的序列的长度，表示N/M的向下取整。
  6. 根据权利要求1-5中任一项所述的方法，其特征在于，所述序列配置信息还包括所述每个设备对应的序列长度，所述序列长度用于确定所述序列集中用于循环移位的序列。
  7. 根据权利要求1-6中任一项所述的方法，其特征在于，所述序列配置信息还包括所述每个设备对应的序列标识，所述序列标识用于标识所述序列集中的序列，所述一个或多个设备中用于共同完成一项业务的设备所对应的序列标识相同，所述一个或多个设备中用于完成 不同业务的设备所对应的序列标识不同。
  8. 一种基于超宽带的物理层协议数据单元PPDU传输方法，其特征在于，包括：
    通信装置生成物理层协议数据单元PPDU，所述PPDU包括前导码序列，所述前导码序列是序列集中的目标序列经过循环移位后生成，所述序列集中的任一个序列的周期自相关旁瓣幅度为0；
    所述通信装置发送所述PPDU。
  9. 根据权利要求8所述的方法，其特征在于，所述通信装置生成物理层协议数据单元PPDU之前，所述方法还包括：
    所述通信装置接收配置信息，所述配置信息包括所述通信装置的设备地址，所述配置信息还包括序列配置信息，所述序列配置信息包括以下一项或多项：所述通信装置对应的循环移位位数，所述通信装置对应的序列长度，所述通信装置对应的序列标识；
    所述循环移位位数用于对所述序列集中的所述目标序列进行循环移位，所述序列长度用于确定所述序列集中所述目标序列，所述序列标识用于标识所述序列集中的所述目标序列。
  10. 一种基于超宽带的物理层协议数据单元PPDU传输方法，其特征在于，包括：
    通信装置接收物理层协议数据单元PPDU，所述PPDU包含前导码序列，所述前导码序列是序列集中的目标序列经过循环移位后生成，所述序列集中的任一个序列的周期自相关旁瓣幅度为0；
    所述通信装置对所述PPDU进行处理。
  11. 根据权利要求8-10中任一项所述的方法，其特征在于，所述前导码序列是所述序列集中的目标序列经过循环移位后得到，或者所述前导码序列是所述序列集中的目标序列经过循环移位后再重复一次或多次后得到。
  12. 一种通信装置，其特征在于，包括：
    处理单元，用于生成配置信息，所述配置信息包括一个或多个设备的设备地址，所述配置信息还包括序列配置信息，所述序列配置信息包括每个设备对应的循环移位位数，所述循环移位位数用于对序列集中的序列进行循环移位，所述序列集中的任一个序列的周期自相关旁瓣幅度为0，所述一个或多个设备中用于完成不同业务的设备所对应的循环移位位数不同；
    收发单元，用于发送所述配置信息。
  13. 一种通信装置，其特征在于，包括：
    收发单元，用于接收配置信息，所述配置信息包括一个或多个设备的设备地址，所述配置信息还包括序列配置信息，所述序列配置信息包括每个设备对应的循环移位位数，所述循环移位位数用于对序列集中的序列进行循环移位，所述序列集中的任一个序列的周期自相关旁瓣幅度为0，所述一个或多个设备中用于完成不同业务的设备所对应的循环移位位数不同；
    处理单元，用于根据所述配置信息确定所述通信装置对应的循环移位位数。
  14. 根据权利要求13所述的装置，其特征在于，所述收发单元，还用于：
    发送PPDU，所述PPDU包含前导码序列，所述前导码序列是所述序列集中的目标序列经过循环移位后得到，所述循环移位的位数等于所述通信装置对应的循环移位位数。
  15. 根据权利要求12-14中任一项所述的装置，其特征在于，所述一个或多个设备中用于共同完成一项业务的设备所对应的循环移位位数相同。
  16. 根据权利要求12-15中任一项所述的装置，其特征在于，所述一个或多个设备属于M个设备分组，每个设备分组中的设备用于共同完成一项业务，一个设备分组对应一个循环移位位数，M为大于或等于1的整数；
    所述M个设备分组分别对应的循环移位位数为：0,Z,2Z,3Z,...,(M-1)×Z；所述一个或多个设备对应所述序列集中的同一个序列，所述M个设备分组对应的M个循环移位位数用于对所述序列集中的同一个序列进行循环移位；
    其中，N表示所述一个或多个设备对应的序列的长度，表示N/M的向下取整。
  17. 根据权利要求12-16中任一项所述的装置，其特征在于，所述序列配置信息还包括所述每个设备对应的序列长度，所述序列长度用于确定所述序列集中用于循环移位的序列。
  18. 根据权利要求12-17中任一项所述的装置，其特征在于，所述序列配置信息还包括所述每个设备对应的序列标识，所述序列标识用于标识所述序列集中的序列，所述一个或多个设备中用于共同完成一项业务的设备所对应的序列标识相同，所述一个或多个设备中用于完成不同业务的设备所对应的序列标识不同。
  19. 一种通信装置，其特征在于，包括：
    处理单元，用于生成物理层协议数据单元PPDU，所述PPDU包括前导码序列，所述前导码序列是序列集中的目标序列经过循环移位后生成，所述序列集中的任一个序列的周期自相关旁瓣幅度为0；
    收发单元，用于发送所述PPDU。
  20. 根据权利要求19所述的装置，其特征在于，所述收发单元，还用于：
    接收配置信息，所述配置信息包括所述通信装置的设备地址，所述配置信息还包括序列配置信息，所述序列配置信息包括以下一项或多项：所述通信装置对应的循环移位位数，所述通信装置对应的序列长度，所述通信装置对应的序列标识；
    所述循环移位位数用于对所述序列集中的所述目标序列进行循环移位，所述序列长度用于确定所述序列集中所述目标序列，所述序列标识用于标识所述序列集中的所述目标序列。
  21. 一种通信装置，其特征在于，包括：
    收发单元，用于接收物理层协议数据单元PPDU，所述PPDU包含前导码序列，所述前导码序列是序列集中的目标序列经过循环移位后生成，所述序列集中的任一个序列的周期自相关旁瓣幅度为0；
    处理单元，用于对所述PPDU进行处理。
  22. 根据权利要求19-21中任一项所述的装置，其特征在于，所述前导码序列是所述序列集中的目标序列经过循环移位后得到，或者所述前导码序列是所述序列集中的目标序列经过循环移位后再重复一次或多次后得到。
  23. 一种通信装置，其特征在于，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，以使权利要求1至11任一项所述的方法被执行。
  24. 一种通信装置，其特征在于，包括逻辑电路和接口，所述逻辑电路和接口耦合；
    所述接口用于输入和/或输出代码指令，所述逻辑电路用于执行所述代码指令，以使权利要求1至11任一项所述的方法被执行。
  25. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质用于存储计算机程序，当所述计算机程序被执行时，权利要求1至11任一项所述的方法被执行。
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Citations (3)

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WO2017134310A1 (en) * 2016-02-04 2017-08-10 Decawave Ltd. Secure channel sounding
US20210337604A1 (en) * 2019-01-09 2021-10-28 Huawei Technologies Co., Ltd. Client device and network access node for transmitting and receiving a random access preamble
WO2022083845A1 (en) * 2020-10-19 2022-04-28 Huawei Technologies Co., Ltd. Sequences enabling low-complexity detection of random access preambles

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017134310A1 (en) * 2016-02-04 2017-08-10 Decawave Ltd. Secure channel sounding
US20210337604A1 (en) * 2019-01-09 2021-10-28 Huawei Technologies Co., Ltd. Client device and network access node for transmitting and receiving a random access preamble
WO2022083845A1 (en) * 2020-10-19 2022-04-28 Huawei Technologies Co., Ltd. Sequences enabling low-complexity detection of random access preambles

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