WO2024051488A1 - Procédé et appareil de transmission d'informations - Google Patents

Procédé et appareil de transmission d'informations Download PDF

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Publication number
WO2024051488A1
WO2024051488A1 PCT/CN2023/114237 CN2023114237W WO2024051488A1 WO 2024051488 A1 WO2024051488 A1 WO 2024051488A1 CN 2023114237 W CN2023114237 W CN 2023114237W WO 2024051488 A1 WO2024051488 A1 WO 2024051488A1
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WIPO (PCT)
Prior art keywords
duration
information
sensing
ranging
time
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PCT/CN2023/114237
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English (en)
Chinese (zh)
Inventor
吴宽
彭晓辉
钱彬
杜瑞
于茜
杨讯
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华为技术有限公司
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Publication of WO2024051488A1 publication Critical patent/WO2024051488A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information

Definitions

  • the present application relates to the field of wireless communication technology, and in particular, to an information transmission method and device.
  • the sender and receiver can achieve the purpose of discovering targets or determining target status by transmitting signals, which is called perception.
  • the sending end and the receiving end can achieve the purpose of measuring the distance between the sending end and the receiving end, which is called ranging.
  • Ultra wideband (UWB) technology can use a single waveform to realize sensing and carry out ranging at the same time.
  • the typical pulse waveform is a Gaussian windowed 8th order Butterworth pulse waveform.
  • the pulse waveform has lower side lobe peaks, which is beneficial to the sensing function.
  • the first path signal of this pulse waveform is also significant and is also suitable for the ranging function.
  • the power spectral density of this waveform also meets the limitations specified by the 802.15.4z version, and this waveform can be used to achieve simultaneous sensing and ranging.
  • This application provides an information transmission method and device to improve sensing or ranging performance.
  • the first aspect provides an information transmission method.
  • the method may be performed by the first device, or by a chip/chip system.
  • the first device sends first information to the second device, the first information indicates a duration range, the duration range is between the first duration and the second duration, and the first duration is smaller than the second duration.
  • the first device sends second information to the second device, the second information indicates at least two time units, the duration between the end time of the first time unit and the start time of the second time unit is within the duration range, and the first time
  • the unit and the second time unit are any two adjacent time units among the at least two time units. Wherein, at least two time units are used for the second device to perform sensing and/or ranging.
  • the first device can negotiate the time range with the second device.
  • the time interval for the second device to perform sensing or ranging can be constrained as much as possible through the above time range, that is, the sending of synchronous sensing information or ranging information between the second device and the first device or between the second device and other devices can be constrained as much as possible. time and reception time, thereby improving the performance of sensing or ranging.
  • the first device receives third information from the second device, the third information indicates a third duration and a fourth duration, and the third duration is less than the fourth duration.
  • the first duration is determined based on the third duration
  • the second duration is determined based on the fourth duration.
  • the third duration is the minimum pause duration required by the second device for sensing and/or ranging
  • the fourth duration is the maximum pause duration required by the second device for sensing and/or ranging.
  • the first duration is related to the third duration
  • the second duration is related to the fourth duration
  • the third duration and the fourth duration are determined based on the capability information of the second device, so that the first duration and the fourth duration are determined.
  • the duration range between the two durations also meets the capabilities of the second device, so that when the second device performs sensing and/or ranging, the second device can better send sensing information and/or ranging information within the specified interval. Adapt capability information to the second device.
  • the first device sends fourth information to the second device.
  • the fourth information is used to request the second device to send third information.
  • the second device can then send the third information according to the request of the first device, so that the second device can then send the third information according to the needs of the first device, and the implementation method is more targeted.
  • the first duration may be specifically determined based on the third duration and the fifth duration
  • the second duration may be specifically determined based on the fourth duration and the sixth duration.
  • the fifth duration is the minimum pause duration required by the first device for sensing and/or ranging.
  • the sixth duration is the maximum pause duration required by the first device for sensing and/or ranging.
  • the first duration and the second duration may be jointly determined based on the capability information of the first device and the second device, so that the duration range falling between the first duration and the second duration satisfies the requirements of the first device.
  • the capabilities also meet the capabilities of the second device, so that when the second device performs sensing and/or ranging, the second device can better adapt to the second device by sending sensing information and/or ranging information within a specified interval. Capability information of the first device and the second device.
  • the first information further includes first indication information, and the first indication information indicates at least one of sensing and ranging.
  • the first indication information may also indicate the waveform of the signal sent in at least two time units. Based on this solution, the second device can determine the business scenario corresponding to the duration range.
  • the first information also includes second indication information
  • the fourth indication information indicates whether the first information contains the first indication information.
  • the duration between the end time of the first time unit and the start time of the second time unit may be determined based on sensing and/or ranging. Based on this solution, the end time of the first time unit and the start time of the second time unit can meet the requirements of sensing and/or ranging, and can improve the performance of sensing and/or ranging.
  • the first device sends first information to the second device. Specifically, the first device sends a first information element to the second device, where the first information element includes third indication information, The third indication information may indicate that the first information element indicates the duration range.
  • the first device sends fourth information to the second device. Specifically, the first device sends a second information element to the second device.
  • the second information element includes fourth indication information.
  • the fourth indication information indicates that the first device sends fourth information to the second device.
  • the second information element is used to request the second device to send third information. Based on this solution, the transmission of different information through information elements can reduce the demand for device capabilities.
  • the above-mentioned first information element and second information element may be the same information element, and the third indication information and the fourth indication information may be carried by the same field in the information element.
  • the duration of the end time of the first time unit and the start time of the second time unit may satisfy the seventh duration, such as being equal to the seventh duration.
  • This seventh duration is within the duration range above.
  • the second device can determine the pause duration for sensing and/or ranging based on the duration of the end time of the first time unit and the start time of the second time unit.
  • the second aspect provides an information transmission method.
  • the method may be performed by a second device, or by a chip/chip system.
  • the second device receives first information from the first device, the first information indicates a duration range, the duration range is between the first duration and the second duration, and the first duration is smaller than the second duration.
  • receives second information from the first device the second information indicates at least two time units, the duration between the end time of the first time unit and the start time of the second time unit is within the duration range, and the first The time unit and the second time unit are any two adjacent time units among the at least two time units.
  • the second device performs sensing and/or ranging on each of at least two time units.
  • the second device sends third information to the first device, the third information indicates the third duration and the fourth duration, and the third duration is less than the fourth duration.
  • the first duration is determined based on the third duration
  • the second duration is determined based on the fourth duration.
  • the third duration is used by the first device to determine the first duration
  • the fourth duration is used by the first device to determine the second duration.
  • the third duration may be the minimum pause duration required by the second device for sensing and/or ranging
  • the fourth duration may be the maximum pause duration required by the second device for sensing and/or ranging.
  • the second device receives fourth information from the first device, and the fourth information is used to request the second device to send third information.
  • the first duration may also be determined based on the third duration and the fifth duration
  • the second duration may also be determined based on the fourth duration and the sixth duration.
  • the fifth duration is the minimum pause duration required by the first device for sensing and/or ranging.
  • the sixth duration is the maximum pause duration required by the first device for sensing and/or ranging.
  • the first information also includes first indication information, and the first indication information indicates sensing and/or ranging.
  • the first indication information may also indicate the waveform of the signal sent in at least two time units.
  • the first information also includes second indication information, and the second indication information indicates whether the first information contains the first indication information.
  • the duration between the end time of the first time unit and the start time of the second time unit may be determined based on sensing and/or ranging.
  • the second device receives the first information from the first device. Specifically, the second device receives a first information element from the first device, and the first information element includes a third indication. information, the third indication information may indicate that the first information element indicates the duration range.
  • the second device receives fourth information from the first device. Specifically, the second device receives a second information element from the first device. The second information element includes fourth indication information. The fourth indication information The indication second information element is used to request the second device to send third information.
  • the above-mentioned first information element and second information element may be the same information element, and the third indication information and the fourth indication information may be to be carried via the same field in the information element.
  • the duration of the end time of the first time unit and the start time of the second time unit may satisfy the seventh duration, such as being equal to the seventh duration.
  • This seventh duration is within the duration range above.
  • a communication device including a processing unit and a transceiver unit.
  • the transceiver unit is configured to send first information to the second device.
  • the first information indicates a duration range, the duration range is between the first duration and the second duration, and the first duration is less than the second duration.
  • the transceiver unit is also configured to send second information to the second device, where the second information indicates at least two time units, and the duration between the end time of the first time unit and the start time of the second time unit is within the duration range.
  • the first time unit and the second time unit are any two adjacent time units among the at least two time units. Wherein, at least two time units are used for the second device to perform sensing and/or ranging.
  • the transceiver unit is also configured to receive third information from the second device, where the third information indicates the third duration and the fourth duration, and the third duration is less than the fourth duration.
  • the first duration is determined based on the third duration
  • the second duration is determined based on the fourth duration.
  • the third duration is the minimum pause duration required by the second device for sensing and/or ranging
  • the fourth duration is the maximum pause duration required by the second device for sensing and/or ranging.
  • the transceiver unit is also configured to send fourth information to the second device.
  • the fourth information is used to request the second device to send third information.
  • the first duration is determined based on the third duration and the fifth duration
  • the second duration is determined based on the fourth duration and the sixth duration.
  • the fifth duration is the minimum pause duration required by the first device for sensing and/or ranging.
  • the sixth duration is the maximum pause duration required by the first device for sensing and/or ranging.
  • the first information also includes first indication information, and the first indication information indicates sensing and/or ranging.
  • the first indication information may also indicate the waveform of the signal sent in at least two time units.
  • the first information further includes second indication information
  • the fourth indication information indicates that the first information contains the first indication information
  • the duration between the end time of the first time unit and the start time of the second time unit is determined based on sensing and/or ranging.
  • the transceiver unit is further configured to send a first information element to the second device, where the first information element includes third indication information, and the third indication information may indicate the first information element indicates a duration range.
  • the transceiver unit is further configured to send a second information element to the second device, where the second information element includes fourth indication information, and the fourth indication information indicates that the second information element is used to request the second device to send third information.
  • the first information element and the second information element may be the same information element, and the third indication information and the fourth indication information are carried in the same field.
  • the duration of the end time of the first time unit and the start time of the second time unit may satisfy the seventh duration, such as being equal to the seventh duration.
  • This seventh duration is within the duration range above.
  • a communication device including a processing unit and a transceiver unit.
  • a transceiver unit configured to receive first information from the first device, where the first information indicates a duration range, the duration range is between the first duration and the second duration, and the first duration is less than the second duration.
  • the transceiver unit is also configured to receive second information from the first device, where the second information indicates at least two time units. Wherein, the duration between the end time of the first time unit and the start time of the second time unit is within the duration range.
  • the first time unit and the second time unit are any two adjacent time units among the at least two time units.
  • a processing unit for sensing and/or ranging on each of at least two time units.
  • the transceiver unit is also configured to send third information to the first device, where the third information indicates the third duration and the fourth duration, and the third duration is less than the fourth duration.
  • the third duration is used by the first device to determine the first duration
  • the fourth duration is used by the first device to determine the second duration.
  • the third duration is the minimum pause duration required by the second device for sensing and/or ranging
  • the fourth duration is the maximum pause duration required by the second device for sensing and/or ranging.
  • the transceiver unit is also configured to receive fourth information from the first device, and the fourth information is used to request the second device to send third information.
  • the first duration is determined based on the third duration and the fifth duration
  • the second duration is determined based on the fourth duration and the sixth duration.
  • the fifth duration is the minimum pause duration required by the first device for sensing and/or ranging.
  • the sixth duration is the maximum pause duration required by the first device for sensing and/or ranging.
  • the first information also includes first indication information, and the first indication information indicates sensing and/or ranging.
  • the first indication information may also indicate the waveform of the signal sent on at least two time units.
  • the first information further includes second indication information, and the second indication information indicates that the first information contains the first indication information.
  • the duration between the end time of the first time unit and the start time of the second time unit is determined based on sensing and/or ranging.
  • the transceiver unit is also configured to receive a first information element from the first device, where the first information element includes third indication information, and the third indication information may indicate that the first information element indicates a duration range.
  • the transceiver unit is further configured to receive a second information element from the first device, where the second information element includes fourth indication information, and the fourth indication information indicates that the second information element is used to request the second device to send third information.
  • the first information element and the second information element may be the same information element, and the third indication information and the fourth indication information are carried in the same field.
  • the duration of the end time of the first time unit and the start time of the second time unit may satisfy the seventh duration, such as being equal to the seventh duration.
  • This seventh duration is within the duration range above.
  • a communication device may be a communication device in any possible implementation of the second aspect in the above embodiments, or a communication device provided in any of the second aspects. in the chip.
  • the communication device includes a communication interface and a processor, and optionally, a memory.
  • the memory is used to store computer programs or instructions or data
  • the processor is coupled to the memory and the communication interface.
  • the communication device is caused to execute any one of the above first aspects.
  • the method executed by the first device in the possible implementation manner, or the communication device is caused to execute the method executed by the second device in any possible implementation manner of the second aspect.
  • the communication interface can be implemented through antennas, feeders, codecs, etc. in the communication device, or if the communication device is a chip provided in network equipment or terminal equipment, the communication interface can be the input of the chip /Output interface, such as input/output pins, etc.
  • the communication device may also include a transceiver for communicating with other devices.
  • inventions of the present application provide a chip system.
  • the chip system includes a processor and may also include a memory for implementing the method executed by the first device in any possible implementation manner of the first aspect or A method executed by the second device in any possible implementation manner of the second aspect.
  • the chip system further includes a memory for storing program instructions and/or data.
  • the chip system can be composed of chips or include chips and other discrete devices.
  • the present application provides a computer-readable storage medium that stores a computer program or instructions.
  • the first device or the third device implements the above aspects. 2. The method of device execution.
  • a computer program product includes: computer program code or instructions.
  • the first device or the second device in the above aspects causes The executed method is executed.
  • a ninth aspect provides a communication device, which includes a unit or module that performs the methods of the above aspects.
  • a chip system including a logic circuit and an input-output unit.
  • Logic circuit used to perform the method of the first aspect or the second aspect.
  • Input-output unit for use with other devices.
  • the chip system is used to execute a method executed by a first device
  • the other device is a second device.
  • the other device is the first device.
  • Figure 1 is a schematic diagram of a communication system provided by an embodiment of the present application.
  • Figure 2 is a schematic diagram of a star topology provided by an embodiment of the present application.
  • Figure 3 is a schematic diagram of a mesh topology provided by an embodiment of the present application.
  • Figure 4 is a schematic diagram of a possible sensing scenario based on frequency band splicing
  • Figure 5 is an exemplary flow chart of an information transmission method provided by an embodiment of the present application.
  • Figure 6 is a schematic diagram of a possible first information provided by an embodiment of the present application.
  • Figure 7 is one of the scene schematic diagrams of the information transmission method provided by the embodiment of the present application.
  • Figure 8 is one of the scene diagrams of the information transmission method provided by the embodiment of the present application.
  • Figure 9 is one of the scene schematic diagrams of the information transmission method provided by the embodiment of the present application.
  • Figure 10 is one of the scene diagrams of the information transmission method provided by the embodiment of the present application.
  • Figure 11 is one of the scene diagrams of the information transmission method provided by the embodiment of the present application.
  • Figure 12 is one of the scene diagrams of the information transmission method provided by the embodiment of the present application.
  • Figure 13 is a schematic diagram of a communication device provided by an embodiment of the present application.
  • Figure 14 is a schematic diagram of a communication device provided by an embodiment of the present application.
  • Figure 15 is a schematic diagram of a communication device provided by an embodiment of the present application.
  • Figure 16 is a schematic diagram of a communication device provided by an embodiment of the present application.
  • Perception which can also be called perceptual measurement or wireless sensing, refers to the purpose of discovering targets or determining target status through the transmission of signals between the sender and the receiver.
  • Wireless local area network (WLAN) awareness means that a station (STA) with WLAN awareness capability uses received WLAN signals to detect the characteristics of expected targets in a given environment. For example, characteristics include one or more of range, speed, angle, motion, presence or proximity, gesture, etc. Targets include one or more of objects, people, animals, etc.
  • An environment includes one or more of a room, house, vehicle, business, etc.
  • the transmitter can send a signal for perception measurement to the receiver, and the receiver can measure the signal to obtain channel estimation results, such as channel state information (CSI).
  • the receiving end can sense based on CSI.
  • the receiving end can send the channel estimation result to the sending end, and the sending end performs target sensing or target state sensing based on the channel estimation result.
  • the receiving end or the transmitting end can process the CSI to determine whether there are moving targets in the environment. For example, it is assumed that there is a moving target in the environment, and the target movement will affect the amplitude and frequency of PPDU during this period of time, and these effects will be reflected in the CSI during this period of time. Therefore, the receiving end or the transmitting end can determine whether there is a moving target in the environment based on CSI.
  • the devices participating in sensing mainly have the following roles:
  • Sensing initiator the device that initiates the sensing process.
  • Sensing responder A device that responds to the sensing initiated by the sensing initiator and participates in sensing.
  • Sensing transmitter A device that sends sensing signals.
  • the sensing signal may refer to a signal used for sensing measurement.
  • the sensing receiver can measure the sensing signal.
  • Sensing receiver A device that receives sensing signals.
  • Ranging refers to the purpose of measuring the distance between the sending end and the receiving end by transmitting signals.
  • the purpose of determining the location of the sending end and/or the receiving end can also be achieved.
  • Ranging initiator The device that initiates the ranging process.
  • Ranging responder A device that responds to the ranging process initiated by the ranging initiator and participates in ranging.
  • Ranging transmitter A device that sends ranging signals.
  • the ranging signal may refer to a signal used for ranging.
  • Ranging receiver A device that receives ranging signals.
  • Frequency band can refer to the frequency domain range.
  • Duration also known as time interval, refers to a period of time. It can be understood that the duration can be represented by a numerical value, or it can also be represented by a time unit, such as a time slot or a symbol. For example, a time slot may refer to a duration of 9 microseconds.
  • the embodiments of the present application may be applicable to WLAN scenarios, for example, may be applicable to Institute of Electrical and Electronics Engineers (IEEE) 802.11 system standards, such as 802.11a/b/g, 802.11n, 802.11ac, 802.11 ax standard, or its next generation, such as 802.11be standard, Wi-Fi 7 or extremely high throughput (EHT), 802.11ad, 802.11ay, 802.11bf, and the next generation of 802.11be, such as Wi-Fi 8 or next generation standards.
  • IEEE Institute of Electrical and Electronics Engineers
  • 802.11 system standards such as 802.11a/b/g, 802.11n, 802.11ac, 802.11 ax standard
  • 802.11be standard such as 802.11be standard, Wi-Fi 7 or extremely high throughput (EHT)
  • 802.11ad 802.11ay
  • 802.11bf extremely high throughput
  • Wi-Fi 8 or next generation standards such as Wi-Fi 8 or next generation standards.
  • LTE systems LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD), general mobile communications System (universal mobile telecommunication system, UMTS), global interoperability for microwave access (WiMAX) communication system, 5G communication system, and future 6G communication system, etc.
  • FDD frequency division duplex
  • TDD LTE time division duplex
  • UMTS general mobile communications System
  • WiMAX global interoperability for microwave access
  • WLAN starts with the 802.11a/g standard and proceeds through 802.11n, 802.11ac, 802.11ax, and the 802.11be currently being discussed.
  • 802.11n can also be called high throughput (HT);
  • 802.11ac can also be called very high throughput (VHT);
  • 802.11ax can also be called high High efficiency (HE) or Wi-Fi 6;
  • 802.11be can also be called EHT or Wi-Fi 7, while standards before HT, such as 802.11a/b/g, can be collectively called non-high throughput (Non -HT).
  • FIG. 1 a network architecture diagram of a WLAN applicable to the embodiment of the present application is shown.
  • Figure 1 takes the WLAN as an example including 1 wireless access point (AP) and 2 stations (STAs).
  • a STA associated with an AP can receive wireless frames sent by the AP and can also send wireless frames to the AP.
  • the embodiments of the present application are also applicable to the communication between APs.
  • each AP can communicate with each other through a distributed system (DS).
  • DS distributed system
  • the embodiments of the present application are also applicable to the communication between STAs. . It should be understood that the number of APs and STAs in Figure 1 is only an example, and may be more or less.
  • the access point can be an access point for terminal devices (such as mobile phones) to enter the wired (or wireless) network. It is mainly deployed inside homes, buildings and campuses. The typical coverage radius is tens of meters to hundreds of meters. Of course, it can also Can be deployed outdoors.
  • the access point is equivalent to a bridge connecting the wired network and the wireless network. Its main function is to connect various wireless network clients together, and then connect the wireless network to the Ethernet.
  • the access point can be a terminal device (such as a mobile phone) or a network device (such as a router) with a Wi-Fi chip.
  • the access point can be a device that supports the 802.11be standard.
  • the access point can also support various wireless local area networks (WLAN) of the 802.11 family such as 802.11ax, 802.11ac, 802.11ad, 802.11ay, 802.11n, 802.11g, 802.11b, 802.11a and 802.11be next generation. ) standard equipment.
  • WLAN wireless local area networks
  • the site can be a wireless communication chip, wireless sensor or wireless communication terminal, etc., and can also be called a user.
  • the site can be a mobile phone that supports Wi-Fi communication function, a tablet computer that supports Wi-Fi communication function, a set-top box that supports Wi-Fi communication function, a smart TV that supports Wi-Fi communication function, or a smart TV that supports Wi-Fi communication function.
  • the site can support the 802.11be standard.
  • the site can also support multiple wireless local area networks (WLAN) standards of the 802.11 family such as 802.11ax, 802.11ac, 802.11n, 802.11g, 802.11b, 802.11a, 802.11be next generation.
  • WLAN wireless local area networks
  • access points and sites can be devices used in the Internet of Vehicles, IoT nodes, sensors, etc. in the Internet of Things (IoT), smart cameras, smart remote controls, smart water meters and electricity meters in smart homes, and sensors in smart cities, etc.
  • IoT Internet of Things
  • smart cameras smart remote controls
  • smart water meters and electricity meters in smart homes and sensors in smart cities, etc.
  • the APs and STAs involved in the embodiments of this application may be APs and STAs applicable to the IEEE 802.11 system standard.
  • AP is a device deployed in a wireless communication network to provide wireless communication functions for its associated STAs.
  • the AP can be used as the hub of the communication system. It is usually a network-side product that supports the MAC and PHY of the 802.11 system standard. For example, it can be a base station. , routers, gateways, repeaters, communication servers, switches or bridges and other communication equipment, wherein the base stations may include various forms of macro base stations, micro base stations, relay stations, etc.
  • the above-mentioned devices are collectively referred to as APs.
  • STA is usually a terminal product that supports the media access control (MAC) and physical layer (physical, PHY) of the 802.11 system standard, such as mobile phones, laptops, etc.
  • MAC media access control
  • PHY physical layer
  • the first device involved in the embodiment of this application may be an AP or a STA.
  • the second device involved in the embodiment of this application may be an AP or a STA.
  • FIG. 2 is a schematic diagram of a star topology provided by an embodiment of the present application.
  • a central node can control data communication between one or more other devices.
  • the central node can be an AP or STA, and other devices can be APs or STAs.
  • Point-to-point topology can be regarded as a special mesh topology.
  • Point multipoint topology refers to the structure of data communication between two devices.
  • data communication can be carried out between any two devices, as shown in Figure 3.
  • the black nodes in Figure 2 or Figure 3 are full function devices (FFD), and the white nodes are reduced function devices (RFD).
  • FFD can be an anchor device or a tag device with strong computing power, such as a UWB tag mounted on a smartphone.
  • RFD is a tag device and only has partial computing power.
  • the FFD device can serve as a personal area network (PAN) coordinator or coordinator, while the RFD cannot serve as a PAN coordinator or coordinator.
  • PAN personal area network
  • UWB is a wireless communication and sensing ranging technology that uses nanosecond-level wireless non-sinusoidal narrow pulse transmission signals, so it occupies a wide spectrum range. Because its pulses are very narrow and the radiation spectrum density is extremely low, the UWB system has the advantages of strong multipath resolution, low power consumption, and strong confidentiality, and has attracted widespread attention in the industry.
  • UWB Among them, the IEEE Association has incorporated UWB into its IEEE 802 series of wireless standards and released the UWB-based WPAN standard IEEE 802.15.4a and its evolved version IEEE 802.15.4z.
  • UWB focuses more on the capabilities of ranging and sensing.
  • a single waveform can be used to realize sensing and carry out ranging at the same time.
  • the typical pulse waveform is a Gaussian windowed 8th order Butterworth pulse waveform.
  • the pulse waveform has lower side lobe peaks, which is beneficial to the sensing function.
  • the first path signal of this pulse waveform is also significant and is also suitable for the ranging function, and the power spectral density of this waveform also meets the requirements specified by the 802.15.4z version. Limitation, and this waveform can be used to achieve simultaneous sensing and ranging.
  • the existing version of the protocol IEEE 802.15.4z does not support the use of a single waveform to achieve simultaneous sensing and ranging services. This will lead to additional signaling interaction overhead in UWB switching coordination between sensing services and ranging services, and reduce spectrum utilization.
  • UWB systems In order to improve the performance of sensing and ranging, UWB systems require large bandwidth to carry out sensing services. Because the current UWB frequency band is limited, and switching between large bandwidths requires high equipment capabilities and costs. Therefore, you can consider using frequency band splicing technology to splice overlapping frequency bands into a larger bandwidth, thereby reducing equipment capabilities and costs, achieving ranging and perception on a larger bandwidth, and improving ranging and perceived performance. Below, the perception scene is taken as an example for explanation.
  • sensing packets can be sent on frequency bands with frequency overlap in the frequency domain.
  • the ranging packet may be sent on a frequency band with frequency overlap in the frequency domain.
  • There are overlapping frequency bands in these frequency domains which can be spliced into a larger bandwidth.
  • the bandwidth of these frequency bands can be the same, such as approximately 500MHz bandwidth (499.2MHz).
  • adjacent sensing or ranging moments different frequency bands are used to perform sensing or ranging. Among them, adjacent frequency bands overlap in frequency.
  • information used for sensing or ranging such as time-frequency resources, can be exchanged between the receiving end and the transmitting end during the first time period.
  • the first frequency band can be used for sensing or ranging between the receiving end and the transmitting end.
  • the second frequency band can be used for sensing or ranging between the receiving end and the transmitting end, and so on.
  • a feasible frequency band splicing method is: the bandwidth of each frequency band is 499.2MHz. Taking the center frequency of the frequency band at the first moment as the reference, the center frequencies of adjacent frequency bands are offset by 1/4 of the bandwidth (124.8MHz) in sequence, that is, the frequency band overlap ratios are 75%, 50%, and 25% respectively.
  • a switching/converting time is required for the receiving end and transmitting end to complete the switching process of adjacent splicing frequency bands, so that the transmitter and receiver of the receiving end and transmitting end can stably switch to adjacent frequency bands.
  • the conversion time varies between different devices and between transmitters and receivers of the same device. has a difference. Therefore, in actual sensing scheduling instructions or ranging scheduling instructions, the receiving end and the transmitting end need to negotiate and interact in advance to determine the offset time required for frequency band switching between adjacent splicing frequency bands. The length of this time period needs to be greater than the minimum conversion time required by the receiving end and the transmitting end.
  • the current standard protocol does not support the interaction process with the device capabilities for the aforementioned minimum conversion time interval. Therefore, the sending and receiving of sensing packets or ranging packets may be desynchronized, thereby affecting sensing or ranging performance. For example, if the frequency band switching duration is shorter than the conversion time required by the receiving end and/or the transmitting end, the switching to the specified splicing frequency band may not be completed before the sensing packet or ranging packet arrives. For another example, the frequency band switching duration of the receiving end does not match the frequency band switching duration of the transmitting end, which may cause the transmitting end to complete the frequency band switching and send sensing packets or ranging packets before the receiving end has switched to the specified splicing frequency band.
  • the first device may negotiate the time range with the second device. And based on the duration range, the scheduling duration is determined. Based on the scheduled duration, the first device and the second device can perform sensing and/or ranging. Based on this solution, the sensing initiator and the sensing responder can agree on a scheduling time range, so as to synchronize the sending time and receiving time of sensing information as much as possible, thereby improving sensing performance.
  • an exemplary flow chart of an information transmission method provided by an embodiment of the present application may include the following operations.
  • S501 The first device sends the first information to the second device.
  • the second device receives the first information from the first device.
  • the first device may unicast the first information to the second device.
  • the first device may broadcast the first information
  • the second device may receive the broadcasted first information.
  • the first information may carry the identifier of the second device. In this way, other devices other than the second device can discard the first information after receiving the first information.
  • the second device may also determine that the first information is sent to the second device based on the identifier of the second device.
  • the above-mentioned first information may be used to indicate a duration range, and the duration range may be between the first duration and the second duration. Wherein, the first duration may be less than or equal to the second duration.
  • the embodiment shown in Figure 5 may also include the following operations.
  • S500A The first device sends fourth information to the second device.
  • the second device receives the fourth information from the first device.
  • the first device may unicast the fourth information to the second device.
  • the first device may broadcast the fourth information
  • the second device may receive the broadcasted fourth information.
  • the fourth information may carry the identifier of the second device. In this way, other devices other than the second device can discard the fourth information when receiving the fourth information.
  • the second device may also determine that the fourth information is sent to the second device based on the identifier of the second device.
  • the fourth information may be used to request the second device to send the third duration and the fourth duration.
  • the third duration can be understood as the second device
  • the maximum pause duration can be understood as the minimum pause duration of the second device.
  • the pause duration can be understood as the pause duration required by the second device when performing services. For example, in a sensing service based on frequency band splicing, the downtime of the second device may be the conversion time required for frequency band switching. During the pause period, the second device can switch frequency bands.
  • the third duration can be understood as the lower bound of the scheduling duration of the second device, and the fourth duration can be understood as the upper bound of the scheduling duration of the second device.
  • the third duration and the fourth duration can also form a duration range.
  • the third duration and the fourth duration may be determined based on at least one of the capability information of the second device and the scenario (service).
  • the third period of time may be greater than or equal to the transition time of the second device.
  • the third duration can meet the time requirements of the scene.
  • the third duration may need to be larger to allow the second device sufficient time to complete switching of overlapping frequency bands.
  • the third duration may be a compromise value between the requirements of the sensing and ranging scenarios.
  • the fourth duration may be larger to meet the requirements for ranging scenarios such as narrowband-assisted multi-millisecond (NBA-MMS) transmission.
  • the fourth duration may need to be smaller to meet the perceptual requirement for temporal continuity.
  • the fourth duration may be a compromise value between the requirements of the sensing and ranging scenarios.
  • time required by each scenario may be predefined by the protocol or preconfigured, and is not specifically limited in this application.
  • S500B The second device sends the third information to the first device.
  • the first device receives the third information from the second device.
  • the second device may unicast the third information to the first device.
  • the second device may broadcast the fourth information, and the first device may receive the broadcast third information.
  • the third information may carry the identity of the first device. In this way, other devices other than the first device can discard the third information when receiving the third information.
  • the first device may also determine that the third information is sent to the first device based on the identification of the first device.
  • the third information may indicate the above-mentioned third duration and the above-mentioned fourth duration.
  • the first duration and the second duration mentioned above may be predefined by the protocol or preconfigured.
  • the first duration and the second duration may be determined based on at least one of the following: capability information of the sensing initiator, capability information of the sensing responder, or scenario (service).
  • the second device can be a sensing initiator or a sensing responder
  • the first device can be a sensing initiator or a sensing responder
  • the first device can be a third-party device.
  • the second device is the sensing responder.
  • the first device is the sensing responder.
  • the first device is the sensing responder.
  • the first device is a third-party device
  • the second device may be the sensing initiator
  • the third device may be the sensing responder.
  • the third device may be the sensing initiator, and the second device may be the sensing responder.
  • the minimum pause duration of the first device or the third device is referred to as the fifth duration
  • the maximum pause duration of the first device or the third device is referred to as the sixth duration.
  • the fifth duration is less than or equal to the sixth duration. It can be understood that the fifth duration can be implemented with reference to the aforementioned determination method of the third duration, and the sixth duration can be implemented with reference to the aforementioned determination method of the fourth duration, which will not be described again here.
  • the first duration may be greater than or equal to the fifth duration.
  • the first duration may be greater than or equal to the third duration.
  • the first duration may be greater than or equal to the time required by the scene.
  • the lower bound of the scheduling duration range may need to be larger to allow the sensing responder and sensing initiator sufficient time to complete switching of overlapping frequency bands.
  • the lower bound of the scheduling duration range may be a compromise value between the requirements of sensing and ranging scenarios.
  • the first duration may be the maximum value of the third duration and the fifth duration, or be greater than the maximum value.
  • the second duration may be less than or equal to the sixth duration.
  • the second duration may be less than or equal to the fourth duration.
  • the second duration may need to be larger to meet the requirements of ranging scenarios, such as NBA-MMS.
  • the second duration may need to be smaller to meet the perceptual requirement for temporal continuity.
  • the second duration may be a compromise value between the requirements of the sensing and ranging scenarios.
  • the second duration may be the minimum value of the fourth duration and the fifth duration, or be less than the minimum value.
  • the fourth duration is T_4 and the fifth duration is T_5.
  • the second duration T_6 min(T_4,T_5).
  • the first device can use the capability information of the sensing initiator, the capability information of the sensing responder and one of the scenarios. or multiple items, determine the first duration and the second duration, so as to determine the duration range.
  • the first device may indicate the duration range to the second device through the first information.
  • the first information is introduced in detail below.
  • the first information may include one or more of the following. It can be understood that the first information may include any one or more of the following 1) to 6), which is not specifically limited in this application.
  • the fifth indication information may indicate the first duration.
  • the first duration may be the lower bound of the duration range, or the lower bound of the duration window. This duration range can determine the scheduling duration for one or more of sensing and ranging.
  • the sixth indication information may indicate the second duration.
  • the second duration may be the upper bound of the duration range, or the upper bound of the duration window.
  • the fifth indication information and the sixth indication information may indicate the first duration and the second duration respectively.
  • the first information may indicate the first duration and the second duration.
  • the first duration and the second duration may constitute a duration range
  • the fifth indication information and the sixth indication information may also indicate a duration range, as shown in S501 above.
  • the first indication information may indicate a first duration and/or a second duration for sensing and/or ranging.
  • the first indication information may indicate a scene.
  • the first indication information may indicate a ranging scene.
  • the first indication information may indicate a perceived scene.
  • the first indication information may indicate ranging and sensing scenes. The following is introduced through Table 1.
  • Table 1 Example of a possible first indication information
  • the first indication information when the first indication information has a value of 0, the first indication information can indicate the ranging scene; when the first indication information has a value of 1, the first indication information can indicate the sensing scene, so that And so on. It can be understood that each value and corresponding meaning of the first indication information in Table 1 is only shown as an example and does not constitute a limitation on the first indication information in the embodiment of the present application.
  • the first indication information may indicate scenes included in the subset shown in Table 2.
  • the waveforms corresponding to different scenarios are not necessarily the same.
  • the waveforms required for sensing scenarios are different from those required for ranging scenarios.
  • the above-mentioned first indication information may also indicate the corresponding waveform.
  • the first indication information when the first indication information has a value of 0, the first indication information may indicate an 8th order Butterworth pulse waveform; when the first indication information has a value of 1, the first indication information The information may indicate a Gaussian waveform. This application does not limit the specific waveform indicated.
  • the second indication information may indicate whether the first information contains the first indication information. Taking the second indication information as 1-bit information as an example, when the value of the second indication information is 0, the second indication information indicates that the first information does not contain the first indication information. When it is 1, the second indication information indicates that the first information contains the first indication information. Vice versa, when the value of the second indication information is 0, the second indication information indicates that the first information contains the first indication information; when the value of the second indication information is 1, the second indication information indicates that the first information contains Does not contain first indication information.
  • the second device may not parse the corresponding bit sequence, which may save processing resources of the second device.
  • the third indication information may indicate whether the first information indicates a duration range, or whether the first information indicates the first duration and the second duration.
  • the third indication information may indicate whether the first information includes fifth indication information and sixth indication information. Taking the third indication information as 1-bit information as an example, when the value of the third indication information is 0, the first information does not indicate the first duration and the second duration, or the first information does not include the fifth indication. information and the sixth indication information; when the value of the third indication information is 1, the first information indicates the first duration and the second duration, or the first information contains the fifth indication information and the sixth indication information.
  • the first information indicates the first duration and the second duration, or the first information contains the fifth indication information and the sixth indication information; when the third indication information takes the value When the value is 1, the first information does not indicate the first duration and the second duration, or the first information does not include the fifth indication information and the sixth indication information.
  • the second device may not parse the corresponding bit sequence, thereby saving processing resources of the second device.
  • the seventh indication information may indicate the time accuracy of the first duration and the second duration.
  • the time accuracy requirement can be the same as the ranging reply time negotiation (RRTN) information elements (IE) of the 802.15.4z protocol.
  • the first information provided by the embodiment of the present application will be explained and described below with reference to FIG. 6 .
  • the first information includes the above 1) to 6) as an example for description.
  • the third indication information may be the message type in Figure 6.
  • the second indication information may be the usage indicator field presence indication in Figure 6.
  • the fifth indication information may be the usage indicator field presence indication in Figure 6. Scheduling offset time for scheduling-lower bound
  • the sixth indication information may be the scheduling offset time for scheduling-upper bound in Figure 6
  • the first indication information may be the purpose in Figure 6 Scene indication (usage indicator)
  • the seventh indication information may be the time precision (precision) in Figure 6.
  • FIG. 6 the information elements shown in FIG. 6 are only used as an exemplary illustration of the first information and do not constitute a limitation of the first information in the embodiment of the present application.
  • the above first information can be carried by a new information element, or it can be carried by an existing information element, such as the information element carried in 802.15.4z, or the evolution of the information element in 802.15.4z, or it can be Based on the improvement and/or reuse of existing information elements, this application does not make specific limitations.
  • the third indication information (message type) as 1-bit information
  • the value of the third indication information is 0, it can be considered that the information element shown in Figure 6 is used to request the sending of the scheduling duration upper bound and The lower bound of scheduling duration (such as the third duration and the fourth duration).
  • the third indication information has a value of 1
  • it can be considered that the information element shown in FIG. 6 is used to indicate the upper bound of the scheduling duration and the lower bound of the scheduling duration.
  • the third indication information has a value of 1
  • the third indication information has a value of 1
  • the information elements shown in Figure 6 are used to request the sending of the upper bound of the scheduling duration and the lower bound of the scheduling duration.
  • the third indication information indicates that the information element shown in Figure 6 is used to request the sending of the upper bound of the scheduling duration and the lower bound of the scheduling duration
  • the information element shown in Figure 6 does not contain the upper bound field of the scheduling duration. and scheduling duration lower bound field.
  • the third indication information indicates that the information element shown in FIG. 6 is used to indicate the first duration and the second duration
  • the information element shown in FIG. 6 includes a scheduling duration upper bound field and a scheduling duration lower bound field.
  • the fourth information in S500A above can also be implemented based on the information elements shown in Figure 6 .
  • the information element includes fourth indication information
  • the fourth indication information may indicate requesting the second device to send third information.
  • the fourth indication information may be the message type shown in FIG. 6 .
  • the message type may have a value of 0, that is, the fourth information does not indicate the scheduling duration upper bound field and the scheduling duration lower bound field.
  • This information element may be used to request the second device to send the scheduling duration upper bound and scheduling duration lower bound field.
  • the third information in S500B above can also be implemented based on the information elements shown in Figure 6. The third information can be implemented with reference to the aforementioned first information, which will not be described again here.
  • the first information and the fourth information may be carried by different information elements respectively, which is not specifically limited in this application.
  • the third indication information and the second indication information may be indicated through the same field.
  • the third indication information and the second indication information can be combined into one message type (message type) field indication.
  • the implementation of the merged message type field is introduced below through Table 2.
  • the first indication information, the second indication information and the third indication information may be carried in the same information element (the information element shown in Figure 6), or may be carried in different information elements respectively.
  • the second indication information and the first indication information may be carried in a first information element
  • the third indication information may be carried in a second information element different from the aforementioned first information element.
  • the first information element may be a new information element or an existing information element, such as an information element in 802.15.4z, or an evolution of an information element in 802.15.4z.
  • the fourth information element may be a new information element or an existing information element, such as the information element in 802.15.4z, or the evolution of the information element in 802.15.4z.
  • the new IE may be the reuse of reserved list rows in the nested IE list defined in Table 7-18 (Table-7-18) of the 802.15.4z protocol.
  • the elements in the list row include: IE's sub-ID value (sub-ID value), IE name (name), IE type, and the object using the IE (used by) (such as upper layer protocol (UL) ), generate the object of the IE (created by) (upper layer protocol), etc.
  • IE types include: data type (data), enhanced beacon type, enhanced confirmation message type, multi-purpose type, etc.
  • Newly added IEs can be identified and processed by devices that need to perform sensing functions (such as sensing initiators or sensing responders).
  • the corresponding identification and processing methods are similar to the identification and processing methods of IEs specified in the protocol 802.15.4z. Please refer to the current There is protocol 802.15.4z identification and processing method for IE.
  • the protocol upper layer of the first device configures the first information and passes it to the media access control (media access control, MAC) layer of the first device.
  • media access control media access control
  • the upper layer of the protocol may include a layer higher than the MAC layer, such as the network layer.
  • the MAC layer of the second device passes the received first information to the protocol upper layer of the second device, and the protocol upper layer identifies and processes the newly added IE.
  • the new IE can be delivered through the narrowband frequency band. In another possible situation, the new IE can also be transmitted through the UWB frequency band.
  • Table 3 below is an expansion and continuation of Table 7-18 (Table 7-18) of the 802.15.4z protocol.
  • Table 7-18 the existing definitions of Table 7-18 in the agreement are not reflected in Table 3 below.
  • the new IE can be added to the nested IE list defined in Table 7-18 (Table 7-18) of the 802.15.4z protocol as an 802.15.4ab protocol or an evolved protocol. Among them is the new IE.
  • a reserved sub-ID value (sub-ID value) in the nested IE list defined in Table 7-18 of the 802.15.4z protocol can be used to indicate a new IE.
  • Table 3 A possible new IE example that can carry the first information
  • T in Table 3 can be any one or more values from 0x5d-0x7f.
  • Table 3 can be an extension and continuation of the nested IE list defined in 802.15.4z protocol table-7-18 (Table-7-18).
  • the X in Table 3 indicates that the newly added IE belongs to the data type IE.
  • S502 The first device sends the second information to the second device.
  • the second device receives the second information from the first device.
  • the first device may unicast the second information to the second device.
  • the first device may broadcast the second information, and the second device may receive the broadcasted second information.
  • the second information may carry the identifier of the second device. In this way, other devices other than the second device can discard the second information after receiving the second information.
  • the second device may also determine that the second information is sent to the second device based on the identification of the first device.
  • the second information may indicate at least two time units. Taking the time unit as a time slot as an example, for example, the second information may include at least two time slot numbers.
  • the duration between the end time of the first time unit and the start time of the second time unit may satisfy the seventh duration, such as being equal to the seventh duration.
  • the seventh duration is within the duration range in S501. For example, the seventh duration is less than or equal to the second duration above, and greater than or equal to the first duration above.
  • the first time unit and the second time unit mentioned above are any two adjacent time units among at least two time units.
  • At least two time units above can be used for sensing and/or ranging.
  • the second device may perform sensing and/or ranging on each of the above-mentioned at least two time units.
  • the second device may send or receive sensing packets/ranging packets, etc. on each of the above-mentioned at least two time units.
  • the two adjacent time units mentioned above do not necessarily mean absolutely adjacent.
  • the second information may indicate slot number 1, slot number 4, and slot number 8. Among them, it can be considered that the time slot corresponding to time slot number 1 and the time slot corresponding to time slot number 4 are adjacent, and the time slot corresponding to time slot number 4 and the time slot corresponding to time slot number 8 are adjacent.
  • the first device can negotiate a duration range with the second device, and determine the scheduling duration based on the duration range.
  • the sensing initiator and sensing responder can synchronize the sending time and receiving time of sensing information as much as possible through the above scheduling duration, thereby improving sensing performance.
  • the first device may be the initiator, and the second device may be the responder.
  • the first device may be the responder and the second device may be the initiator.
  • the second device may be the initiator or the responder, and the first device may be a third-party device.
  • the initiating end mentioned above may include a sensing initiating end and a ranging initiating end.
  • the first device when the first device is the initiator, the first device may be the sensing initiator or the ranging initiator.
  • the response end may include a sensing response end and a ranging response end.
  • the first device when the first device is a responder, the first device may be a sensing responder or a ranging responder. The following is introduced through case 1 to case 3.
  • Case 1 The first device is the initiator and the second device is the responder.
  • the first device may send fourth information to the second device.
  • the fourth information is the information element shown in FIG. 6 as an example.
  • the information element contains third indication information, and the third indication information has a value of 0, instructing the second device to send third information indicating the third duration and the fourth duration.
  • the second device sends third information to the first device.
  • the third information is the information element shown in FIG. 6 as an example.
  • the information element contains third indication information, and the value of the third indication information is 1, indicating that the information element contains eighth indication information to indicate a third duration, and contains ninth indication information to indicate a fourth duration.
  • the first device may determine the first duration based on one or more of the third duration, the fifth duration of the first device, and the scene. Similarly, the first device may determine the second duration based on one or more of the fourth duration, the sixth duration of the first device, and the scenario, which is implemented with reference to the embodiment shown in FIG. 5 , which will not be described again here. It can be understood that the eighth instruction information can be implemented with reference to the fifth instruction information, and the ninth instruction information can be implemented with reference to the sixth instruction information, which will not be described again below.
  • the first device may send the first information to the second device.
  • the first information is the information element shown in FIG. 6 as an example.
  • the information element contains third indication information, and the third indication information has a value of 1, indicating that the information element contains fifth indication information indicating the first duration, and contains sixth indication information indicating the second duration.
  • the first device may determine an appropriate scheduling duration (such as the seventh duration) based on the duration range formed by the first duration and the second duration.
  • the first device may send second information to the second device.
  • the second information indicates a first time unit, a second time unit and a third time unit.
  • the start time of the first time unit is before the start time of the second time unit
  • the start time of the second time unit is before the start time of the third time unit.
  • the duration between the end time of the first time unit and the start time of the second time unit satisfies the above-mentioned scheduling duration
  • the duration between the end time of the second time unit and the start time of the third time unit satisfies the above-mentioned scheduling. duration.
  • the measurement establishment phase in the embodiment shown in FIG. 7 can be called the perception establishment phase in the sensing scenario, and can be called the ranging establishment phase in the ranging scenario.
  • the measurement control phase can be called the perception control phase in the perception scenario, and the ranging control phase in the ranging scenario.
  • the measurement phase in the sensing scenario can be called the sensing phase, that is, transmitting sensing signals or The author said that the perception package implements the process of perception.
  • the ranging scenario it can be called the measurement stage, which is the process of transmitting ranging signals or ranging packets to achieve ranging. No further details will be given below.
  • the first device sends measurement packets, such as sensing packets or ranging packets, to the second device on the above three time units.
  • the second device may receive the packet from the first device in the above three time units.
  • the second device can perform sensing and/or ranging based on the packet.
  • the second device and the first device may perform frequency band switching.
  • the second device and the first device may perform frequency band switching.
  • Case 2 The first device is the responder and the second device is the initiator.
  • the first device may send fourth information to the second device.
  • the fourth information is the information element shown in FIG. 6 as an example.
  • the information element contains third indication information, and the third indication information has a value of 0, instructing the second device to send third information indicating the third duration and the fourth duration.
  • the second device sends third information to the first device.
  • the third information is the information element shown in FIG. 6 as an example.
  • the information element contains third indication information, and the value of the third indication information is 1, indicating that the information element contains eighth indication information to indicate a third duration, and contains ninth indication information to indicate a fourth duration.
  • the first device may determine the first duration based on one or more of the third duration, the fifth duration of the first device, and the scene. Similarly, the first device may determine the second duration based on one or more of the fourth duration, the sixth duration of the first device, and the scenario, which is implemented with reference to the embodiment shown in FIG. 5 , which will not be described again here.
  • the first device may send the first information to the second device.
  • the first information is the information element shown in FIG. 6 as an example.
  • the information element contains third indication information, and the third indication information has a value of 1, indicating that the information element contains fifth indication information indicating the first duration, and contains sixth indication information indicating the second duration.
  • the first device may determine an appropriate scheduling duration (such as the seventh duration) based on the duration range formed by the first duration and the second duration.
  • the first device may send second information to the second device.
  • the second information indicates the first time unit and the second time unit. It is assumed that in the time domain, the start time of the first time unit is before the start time of the second time unit. The duration between the end time of the first time unit and the start time of the second time unit satisfies the above scheduling duration.
  • the second device sends a measurement packet, such as a sensing packet or a ranging packet, to the first device on the first time unit and the second time unit.
  • the first device may receive the packet from the second device on the first time unit and the second time unit.
  • the first device can perform sensing and/or ranging based on the packet.
  • the second device and the first device may perform frequency band switching.
  • Case 3 The first device is a third-party device, and the second device is the initiator or responder.
  • the first device may send fourth information to the second device.
  • the first device sends fourth information to the third device.
  • the fourth information is the information element shown in FIG. 6 as an example.
  • the information element contains third indication information, and the third indication information has a value of 0, instructing the second device and the third device to send third information indicating the third duration and the fourth duration.
  • the second device sends third information to the first device.
  • the third information is the information element shown in FIG. 6 as an example.
  • the information element contains third indication information, and the value of the third indication information is 1, indicating that the information element contains eighth indication information to indicate a third duration, and contains ninth indication information to indicate a fourth duration.
  • the third device sends fifth information to the first device.
  • the fifth information is the information element shown in FIG. 6 as an example.
  • the information element contains third indication information, and the third indication information has a value of 1, indicating that the information element indicates the fifth duration and the sixth duration of the third device.
  • the first device may determine the first duration based on one or more of the third duration, the fifth duration of the first device, and the scene. Similarly, the first device may determine the second duration based on one or more of the fourth duration, the sixth duration of the first device, and the scenario, which is implemented with reference to the embodiment shown in FIG. 5 , which will not be described again here.
  • the first device may send the first information to the second device. Similarly, the first device sends the first information to the third device.
  • the first information is the information element shown in FIG. 6 as an example.
  • the information element contains third indication information, and the third indication information has a value of 1, indicating that the information element contains fifth indication information indicating the first duration, and contains sixth indication information indicating the second duration.
  • the first device may determine an appropriate scheduling duration based on the first duration and the second duration.
  • the first device may send second information to the second device. Similarly, the first device can send the second information to the third device.
  • the second information indicates the first time unit and the second time unit. It is assumed that in the time domain, the start time of the first time unit is before the start time of the second time unit. The duration between the end time of the first time unit and the start time of the second time unit satisfies the above scheduling duration.
  • the second device sends a measurement packet, such as a sensing packet or a ranging packet, to the third device on the first time unit and the second time unit.
  • the third device may receive the packet from the second device on the first time unit and the second time unit. The third device can perform sensing and/or ranging based on the packet.
  • the third device sends the measurement packet to the second device on the first time unit and the second time unit.
  • the second device may receive the packet from the second device on the first time unit and the second time unit.
  • the second device can perform sensing and/or ranging based on the packet.
  • the second device and the third device may perform frequency band switching.
  • the number of both the initiating end and the sensing receiving end is one.
  • Those skilled in the art can use the information transmission method provided by the embodiments of this application to implement a technical solution for the interaction duration range between an initiator and multiple responders, as well as a technical solution for the interaction duration range between multiple initiators and multiple responders. This No further details will be given.
  • the information within the interaction duration range can be carried through a narrowband (NB) signal, such as a Bluetooth signal or a frequency band located in UNII -3 and/or UNII-5 signals, etc., are not specifically limited in this application.
  • NB narrowband
  • the interaction in the duration range provided by the embodiments of the present application can be implemented in the measurement initialization phase, such as the perception initialization phase or the ranging initialization phase, and the interaction of the second information can be implemented in the measurement control phase, such as the perception control phase or the ranging establishment phase.
  • the timing of determining the scheduling duration by the sensing initiating end and the sensing receiving end will be introduced and explained through Figures 10 to 12 respectively.
  • a measurement round For a single measurement process such as ranging or sensing, it is defined as a measurement round.
  • the minimum processing time unit of each measurement round is the measurement slot.
  • a measurement round it is divided into three phases: measurement control phase, measurement phase and measurement report phase.
  • the measuring wheel above can be a sensing round.
  • the minimum processing time unit of each sensing round is sensing slot.
  • a sensing wheel is divided into three phases: sensing control phase (sensing control phase), measurement phase (sensing measurement phase) and measurement reporting phase (sensing measurement report phase).
  • sensing control phase sensing control phase
  • measurement phase sensing measurement phase
  • measurement reporting phase sensing measurement report phase
  • the above-mentioned measurement wheel may be a sensing round.
  • the minimum processing time unit of each ranging wheel is the ranging slot.
  • ranging control phase ranging control phase
  • ranging measurement phase ranging measurement phase
  • ranging measurement reporting phase ranging measurement report phase
  • the initiating end and the receiving end can complete UWB measurement, such as the necessary initial configuration and control processes such as configuration instructions, negotiation, synchronization and scheduling required for UWB sensing or UWB ranging.
  • the initiating end and the receiving end determine the scheduling duration (seventh duration).
  • the information elements shown in Figure 6 can be carried in sensing control messages (sensing control message, SCM) and/or ranging control messages (ranging control message, RCM).
  • Figure 10 takes SCM as an example.
  • the sender and receiver can perform the measurement process.
  • the sender and receiver can transmit sensing packets or ranging packets.
  • the sensing package provided by the embodiment of the present application can also be used for ranging.
  • the sender and receiver can perform sensing and ranging through the same sensing packet.
  • the time between each sensing packet can meet the determined scheduling time.
  • the SCM in Figure 10 can occupy one or more time slots, such as 1, 2 or 3, etc., which is not specifically limited in this application.
  • SCM can also interact during the measurement phase or the measurement reporting phase, which is not specifically limited in this application.
  • SCM can also interact in earlier stages such as device discovery and connection establishment, which is not specifically limited in this application.
  • sensing control information elements sensing control IE, ARC IE
  • sensing device management information elements sensing device management IE, SDM IE
  • other information elements used for sensing process configuration can be included in the SCM.
  • SCM can also contain content about RCM.
  • RCM advanced ranging control IE
  • ARC IE advanced ranging control IE
  • RDM IE ranging device management IE
  • other information elements included in RCM can also be included in SCM.
  • SCM can also be carried together with RCM in a unified message.
  • RCM is independent messages.
  • SCM may also be based on the multiplexing of part or all of the RCM information elements and corresponding fields. For example, some or all of the information elements in RCM and SCM can be used to configure ranging devices or sensing devices. Specific field reuse rules are used between the two. to differentiate. SCM and RCM are not independent messages. Specific reuse rules are not specifically limited in this application.
  • RCM and SCM can also be the same message.
  • RCM and SCM can also be the same message.
  • This application does not specifically limit the specific scenario in which RCM and SCM are the same message.
  • the information elements shown in Figure 6 can be transmitted in earlier stages such as device discovery and connection establishment.
  • the information elements shown may be carried in messages required for device capability exchange.
  • the device capability interaction occurs in the initialization phase earlier than the sensing wheel.
  • stages such as UWB device discovery, UWB device capability exchange or role negotiation.
  • the initialization phase earlier than the sensing round can refer to the ranging beacon interval (ranging beacon interval) timing structure defined by 802.15.4z.
  • a ranging beacon interval timing structure can be divided into a ranging management phase and a ranging phase.
  • the above capability interaction messages can be transmitted in the ranging management phase.
  • the measurement management stage may include two stages: ranging contention access period (RCAP) and ranging contention free period (RCFP).
  • RCAP ranging contention access period
  • RCFP ranging contention free period
  • the above capability interaction messages can be transmitted in the RCAP phase or in the RCFP phase, and are not specifically limited in this application.
  • the sensing sender and sensing receiver can send RCM and exchange the information required for ranging.
  • the embodiment of the present application specifically limits the device capability exchange message, and does not specifically limit the transmission stage of the device capability exchange message.
  • timing of determining the scheduling duration shown in Figures 10 to 12 is only shown as an example and is not used as a limitation on the timing of the sensing initiating end and the sensing receiving end to determine the scheduling duration in the embodiment of the present application.
  • the number of sensing initiators involved in the embodiment of this application may be one or more.
  • the number of sensing receivers can also be one or more.
  • a sensing initiator corresponds to a sensing receiver.
  • one sensing initiator corresponds to multiple sensing responders.
  • multiple sensing initiators correspond to one sensing receiver.
  • both the sensing initiating end and the sensing receiving end can use the method provided by the embodiments of this application to negotiate the time range or duration, which will not be described in detail in the embodiments of this application.
  • the communication device used to implement the above method in the embodiment of the present application will be introduced below with reference to the accompanying drawings. Therefore, the above content can be used in subsequent embodiments, and repeated content will not be described again.
  • FIG. 13 is a schematic block diagram of a communication device 1300 provided by an embodiment of the present application.
  • the communication device 1300 can correspondingly implement the functions or steps implemented by the first device or the second device in each of the above method embodiments.
  • the communication device may include a processing unit 1310 and a transceiver unit 1320.
  • a storage unit may also be included, which may be used to store instructions (code or programs) and/or data.
  • the processing unit 1310 and the transceiver unit 1320 can be coupled with the storage unit.
  • the processing unit 1310 can read the instructions (code or program) and/or data in the storage unit to implement the corresponding method.
  • Each of the above units can be set up independently or partially or fully integrated.
  • the communication device 1300 can correspondingly implement the behaviors and functions of the first device in the above method embodiments.
  • the communication device 1300 may be a first device, or may be a component (such as a chip or a circuit) used in the first device.
  • the transceiver unit 1320 may be used to perform all receiving or sending operations performed by the first device in the embodiment shown in FIG. 5 .
  • the transceiver unit 1320 is configured to send first information to the second device.
  • the first information indicates a duration range, the duration range is between the first duration and the second duration, and the first duration is less than the second duration.
  • the processing unit 1310 is used to determine at least two time units.
  • the transceiver unit 1320 is also configured to send second information to the second device.
  • the second information indicates at least two time units.
  • the duration between the end time of the first time unit and the start time of the second time unit is within the duration range. .
  • the first time unit and the second time unit are any two adjacent time units among the at least two time units. Wherein, at least two time units are used for the second device to perform sensing and/or ranging.
  • the transceiver unit 1320 is also configured to receive third information from the second device, where the third information indicates the third duration and the fourth duration, and the third duration is less than the fourth duration. Among them, the first duration is determined based on the third duration, and the second duration is determined based on the fourth duration.
  • the transceiver unit 1320 is also configured to send fourth information to the second device.
  • the fourth information is used to request the second device to send third information.
  • the third duration is the minimum pause duration required by the second device for sensing and/or ranging
  • the fourth duration is the maximum pause duration required by the second device for sensing and/or ranging.
  • the transceiver unit 1320 is also configured to send a first information element to the second device.
  • the first information element includes third indication information.
  • the third indication information may indicate that the first information element indicates a duration range.
  • the transceiver unit 1320 is also configured to send a second information element to the second device, where the second information element includes fourth indication information, and the fourth indication information indicates that the second information element is used to request the second device to send third information.
  • the communication device 1300 can correspondingly implement the behaviors and functions of the second device in the above method embodiments.
  • the communication device 1300 may be a second device, or may be a component (such as a chip or a circuit) used in the second device.
  • Send and receive orders Element 1320 may be used to perform all receiving or transmitting operations performed by the second device in the embodiment shown in FIG. 5 .
  • the transceiver unit 1320 is configured to receive first information from the first device, where the first information indicates a duration range, the duration range is between the first duration and the second duration, and the first duration is less than the second duration.
  • the transceiver unit 1320 is also configured to receive second information from the first device, where the second information indicates at least two time units. Wherein, the duration between the end time of the first time unit and the start time of the second time unit is within the duration range.
  • the first time unit and the second time unit are any two adjacent time units among the at least two time units.
  • the processing unit 1310 is configured to perform sensing and/or ranging on each of at least two time units.
  • the transceiver unit 1320 is also configured to send third information to the first device, where the third information indicates the third duration and the fourth duration, and the third duration is less than the fourth duration.
  • the third duration is used by the first device to determine the first duration
  • the fourth duration is used by the first device to determine the second duration.
  • the third duration is the minimum pause duration used by the second device for sensing and/or ranging
  • the fourth duration is the maximum pause duration used by the second device for sensing and/or ranging.
  • the transceiver unit 1320 is also configured to receive fourth information from the first device, and the fourth information is used to request the second device to send third information.
  • the transceiver unit 1320 is also configured to receive a first information element from the first device, where the first information element includes third indication information, and the third indication information may indicate the first information element indication duration. scope.
  • the transceiver unit 1320 is also configured to receive a second information element from the first device, where the second information element includes fourth indication information, and the fourth indication information indicates that the second information element is used to request the second device to send third information.
  • processing unit 1310 and the transceiver unit 1320 For operations performed by the processing unit 1310 and the transceiver unit 1320, please refer to the relevant descriptions of the foregoing method embodiments.
  • processing unit 1310 in the embodiment of the present application can be implemented by a processor or processor-related circuit components
  • transceiver unit 1320 can be implemented by a transceiver or transceiver-related circuit components or a communication interface.
  • an embodiment of the present application provides a communication device 1400.
  • the communication device 1400 includes a processor 1410.
  • the communication device 1400 may also include a memory 1420 for storing instructions executed by the processor 1410 or input data required for the processor 1410 to run the instructions or data generated after the processor 1410 executes the instructions.
  • the processor 1410 can implement the method shown in the above method embodiment through instructions stored in the memory 1420.
  • an embodiment of the present application provides a communication device 1500.
  • the communication device 1500 may be a chip or a chip system.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the communication device 1500 may include at least one processor 1510 coupled to a memory.
  • the memory may be located within the device or outside the device.
  • communication device 1500 may further include at least one memory 1520.
  • the memory 1520 stores the computer programs, configuration information, computer programs or instructions and/or data necessary to implement any of the above embodiments; the processor 1510 may execute the computer program stored in the memory 1520 to complete the method in any of the above embodiments.
  • the coupling in the embodiment of this application is an indirect coupling or communication connection between devices, units or modules, which may be in electrical, mechanical or other forms, and is used for information interaction between devices, units or modules.
  • Processor 1510 may cooperate with memory 1520.
  • the specific connection medium between the above-mentioned transceiver 1530, processor 1510 and memory 1520 is not limited in the embodiment of the present application.
  • the communication device 1500 may also include a transceiver 1530, and the communication device 1500 may interact with other devices through the transceiver 1530.
  • the transceiver 1530 can be a circuit, a bus, a transceiver, or any other device that can be used for information exchange, or is also called a signal transceiver unit. As shown in Figure 15, the transceiver 1530 includes a transmitter 1531, a receiver 1532 and an antenna 1533.
  • the transceiver in the communication device 1500 can also be an input-output circuit and/or a communication interface, which can input data (or receive data) and output data ( Or, sending data),
  • the processor is an integrated processor or microprocessor or integrated circuit, and the processor can determine the output data according to the input data.
  • the communication device 1500 can be applied to the first device.
  • the communication device 1500 can be the first device, or can be a first device that can support the first device to implement any of the above-mentioned embodiments.
  • functional device The memory 1520 stores necessary computer programs, computer programs or instructions and/or data to implement the functions of the first device in any of the above embodiments.
  • the processor 1510 can execute the computer program stored in the memory 1520 to complete the method executed by the first device in any of the above embodiments.
  • the communication device 1500 can be applied to a second device.
  • the communication device 1500 can be the second device, or can be a second device that can support the second device to implement any of the above-mentioned embodiments.
  • Memory 1520 Store necessary computer programs, computer programs or instructions and/or data to implement the functions of the second device in any of the above embodiments.
  • the processor 1510 can execute the computer program stored in the memory 1520 to complete the method executed by the second device in any of the above embodiments.
  • the communication device 1500 provided in this embodiment can be applied to a first device to complete the method executed by the first device, or applied to a second device to complete the method executed by the second device. Therefore, the technical effects that can be obtained can be referred to the above method embodiments, and will not be described again here.
  • the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or Execute each method, step and logical block diagram disclosed in the embodiment of this application.
  • a general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the methods disclosed in conjunction with the embodiments of the present application can be directly implemented by a hardware processor for execution, or can be executed by a combination of hardware and software modules in the processor.
  • the memory may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., or it may be a volatile memory (volatile memory), such as Random-access memory (RAM).
  • Memory may also be, but is not limited to, any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.
  • the memory in the embodiment of the present application can also be a circuit or any other device capable of performing a storage function, used to store computer programs, computer programs or instructions and/or data.
  • the embodiment of the present application also provides another communication device 1600, including: an input and output unit 1610 and a logic circuit 1620; the input and output unit 1610 is used to receive code instructions and transmit them to the logic circuit 1620; Logic circuit 1620 is used to run code instructions to perform the method performed by the first device or the second device in any of the above embodiments.
  • the communication device 1600 can be applied to a first device to perform the method performed by the first device, specifically, for example, the method performed by the first device in the embodiment shown in FIG. 5 .
  • the input and output unit 1610 is configured to output first information to the second device.
  • the first information indicates a duration range, the duration range is between the first duration and the second duration, and the first duration is less than the second duration.
  • the input and output unit 1610 is also used to output second information to the second device.
  • the second information indicates at least two time units. The duration between the end time of the first time unit and the start time of the second time unit is within the duration range. Inside.
  • the first time unit and the second time unit are any two adjacent time units among the at least two time units.
  • Logic circuit 1620 for performing sensing and/or ranging on each of at least two time units.
  • the communication device 1600 can be applied to a second device to perform the method performed by the second device, specifically, for example, the method performed by the first device in the embodiment shown in FIG. 5 .
  • the input and output unit 1610 is used to input first information from the first device, the first information indicates a duration range, the duration range is between the first duration and the second duration, and the first duration is less than the second duration.
  • the input and output unit 1610 is also used to input second information from the first device, where the second information indicates at least two time units.
  • Logic circuit 1620 is used to determine at least two time units according to the first information. Wherein, the duration between the end time of the first time unit and the start time of the second time unit is within the duration range.
  • the first time unit and the second time unit are any two adjacent time units among the at least two time units. Wherein, at least two time units are used for the second device to perform sensing and/or ranging.
  • the communication device 1600 provided in this embodiment can be applied to a first device to complete the method executed by the first device, or applied to a second device to complete the method executed by the second device. Therefore, the technical effects that can be obtained can be referred to the above method embodiments, and will not be described again here.
  • embodiments of the present application also provide a communication system.
  • the communication system includes at least one communication device applied to a first device and at least one communication device applied to a second device.
  • the technical effects that can be obtained may refer to the above method embodiments and will not be described again here.
  • embodiments of the present application also provide a computer-readable storage medium that stores computer programs or instructions.
  • the instructions When the instructions are executed, the first device in any of the above embodiments is executed. The method is performed or the method performed by the second device is performed.
  • the computer-readable storage medium may include: U disk, mobile hard disk, read-only memory, random access memory, magnetic disk or optical disk and other various media that can store program codes.
  • embodiments of the present application also provide a chip, including a processor, to support the communication device to implement the functions involved in the first device or the second device in the above method embodiment.
  • the chip is connected to a memory or the chip includes a memory, which is used to store computer programs or instructions and data necessary for the communication device.
  • embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, this Applications may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment that combines software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
  • computer-usable storage media including, but not limited to, disk storage, CD-ROM, optical storage, etc.
  • These computer programs or instructions may also be stored in a computer-readable memory that causes a computer or other programmable data processing apparatus to operate in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture that includes the instruction means,
  • the instruction means implements the functions specified in a process or processes of the flowchart and/or a block or blocks of the block diagram.
  • These computer programs or instructions may also be loaded onto a computer or other programmable data processing device, causing a series of operating steps to be performed on the computer or other programmable device to produce computer-implemented processing, thereby executing on the computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in a process or processes in the flow diagram and/or in a block or blocks in the block diagram.

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
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Abstract

La présente demande se rapporte au domaine technique des communications sans fil. La demande concerne un procédé et un appareil de transmission d'informations, qui sont utilisés pour améliorer les performances de détection ou de télémétrie. La présente demande est appliquée à un système de réseau personnel sans fil reposant sur une bande ultra-large (UWB), lequel système comprend des protocoles de série 802.15, tels que 802.15.4a, 802.15.4z ou 802.15.4ab ; et peut également être appliqué à un système de réseau local sans fil qui prend en charge des protocoles de série 802.11, tels que le protocole WiFi de nouvelle génération de IEEE 802.11ax, par exemple 802.11be ou EHT, et le protocole WiFi de prochaine génération de 802.11be, par exemple, WiFi 8, un système de détection, etc. Le procédé comprend les étapes suivantes : un premier dispositif envoie des premières informations à un deuxième dispositif pour indiquer une plage de durée ; et le premier dispositif envoie des deuxièmes informations au deuxième dispositif pour indiquer au moins deux unités de temps, la durée entre le temps de fin d'une première unité de temps et le temps de début d'une deuxième unité de temps se situant dans la plage de durée.
PCT/CN2023/114237 2022-09-09 2023-08-22 Procédé et appareil de transmission d'informations WO2024051488A1 (fr)

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